JPH0718239U - Crane inspection weight - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a crane inspection weight that is extremely easy to handle and is safe. [Structure] The present invention comprises a weight mount A and a unit weight B. The weight mount A has holder parts 3 projecting diagonally from four corners of a square metal weight base plate 1 having a weight fitting frame 2 arranged on the upper surface thereof. A hanging end 7a of a hanging arm 7 having a hanging portion 9 is pivotally attached so as to be swingable within a predetermined angle range, and a hanging chain 14 of the same length branched from a crane hanging ring 13 is attached to each of the hanging portions 9. Each tip 14a is attached. Further, the unit weight B includes a plurality of weight units of several types that are loosely fitted to the weight fitting frame 2. The structure is a cube, and a lifting portion 15 and a shift-preventing convex portion 16 are formed on the upper surface thereof, and a shift-preventing concave portion 17 that fits the shift-preventing convex portion 16 is formed on the bottom surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a load weight used when inspecting whether or not a crane is normally driven by applying a specified weight load.

[0002]

[Prior art]

 Cranes for 3 tons or more are required to undergo regular inspections to ensure safety. This inspection method tests whether there is any abnormality by actually suspending the specified weight, and it is said that any heavy object can be hung on the crane as long as the specified weight is confirmed. Therefore, for example, a forklift whose weight is known beforehand or a lump of iron may be hung on a sling with a wire for inspection. With such a method, not only the weight itself is uncertain, but also the shape is indeterminate and the weight is extremely large, so it is difficult to handle, and a falling accident due to detachment or damage of the sling hanging wire may occur. There was a long-awaited dedicated weight for crane inspection.

Therefore, a weight dedicated to the crane inspection has been proposed in order to make it easier to handle, and it has already been provided in part. This weight for exclusive use for crane inspection is hung using sling wires, and the wires are easy to hang, and grooves are provided on the left and right for the purpose of preventing misalignment, and they can be combined vertically so that they will not slip when stacked. It is a plate-shaped metal weight having a predetermined weight. In this way, since the structure is hung by wire hanging, even if measures are taken to prevent misalignment, it may collapse at once if the balance is lost due to variations in the length of the wire or the operating method. However, since the wire is not always a new one, if it weighs as much as 30 tons, there is a risk of a slight scratch or an accident in which the weight is dropped by cutting from the damaged part. In addition, there is a safe way to hang the wire to prevent it from falling off, and there is a risk that the person will hang it because the average person does not have the knowledge.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and provides an extremely safe lane inspection weight that is accurate in weight, is easy to handle, and has no risk of weight loss due to loss of balance. Is.

[0005]

[Means for Solving the Problems]

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

In addition, the unit weight B is a cube and has a lifting portion 15 and a shift-preventing convex portion 16 formed on the upper surface thereof, and a shift-preventing concave portion 17 which is fitted to the shift-preventing convex portion 16 on the bottom surface. is there.

[0007]

【Example】

 Hereinafter, the crane inspection weight of the present invention will be described with reference to the embodiments of FIGS. 1 to 3, which comprises a weight mount A and a plurality of unit weights B. As shown in FIG. 3, the weight mounting base A has a square metal weight supporting plate 1 supported and fixed to a base 5 framed diagonally with four sides by H-shaped steel. Four square grid-like weight fitting frames 2 are arranged on the upper surface of the. Then, the diagonal frames 4 constituting the base 5 are extended from the four corners of the base to form a holder part 3, and the holder part 3 has a hanging arm 7 having a hanging part 9 at its upper end. The base end portion 7a of this is pivotally attached so as to be swingable within a predetermined angle range. Further, the ends 14a of the hanging chains 14 of the same length branched from the crane hanging ring 13 are attached to the hanging portions 9 respectively.

Next, the unit weight B is a cube which is loosely fitted to the weight fitting frame 2 of the frustum base plate 1, and has a lifting portion 15 and a shift-preventing convex portion 16 in the case of being stacked on the upper surface thereof, and a bottom surface thereof. A shift-preventing concave portion 17 that fits into the shift-preventing convex portion 16 is formed. As for the weight of the cubic unit weight B, a necessary number of unit weights of 2000 kg, 1000 kg, 500 kg, 250 kg, 125 kg, etc. are provided. For example, in the case of a 4t crane inspection, as shown in FIG. 1, since the weight mounting base A has a weight of 1 ton, three 1 ton weights should be stably placed in the weight fitting frame 2 on this. become. The weight can be set to several tens of tons by stacking the unit weights B from 1 ton (weight of only the hanging weight), for example, 32 tons by using eight 4 ton weights. If the unit weights B are stacked even when not in use, it can be stored in a small space, and the upper and lower parts are fitted together so that they do not shift, so there is no risk of collapse and it is safe.

[0009]

[Action and effect]

 Since the present invention has the above-mentioned structure, the weight mounting base A has one unit weight. Therefore, if the unit weight B is added to this base so that the inspection weight is obtained, the total weight of the weight is determined by the crane K. Becomes a weight. A wire is not used to load the crane K, and it is sufficient to hang the crane suspension ring 13 on the crane K. For this reason, anyone can definitely hang it without any specialized knowledge. Further, since 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, the unit weight B is extremely stable and the length of the suspension chain 14 is increased. Since they are the same, there is no risk of losing balance. Further, since the weight fitting frame 2 is provided on the upper surface of the metal weight base plate 1, the unit weight B placed therein is not displaced. Further, since the unit weight B has the shift-preventing convex portion 16 and the shift-preventing concave portion 17, both of them are vertically fitted when stacked, and there is no risk of lateral displacement or collapse. Since the weight is divided into small units, if there is a forklift capable of unloading and carrying about 1 to 2 tons, it can be transported to the destination, and the lifting unit 15 can be used to rearrange, place and move the unit weight B. It is extremely easy to adjust the load weight. As a result, it is extremely easy to handle and it is possible to safely inspect the crane.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage 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.

[Explanation of sign]

 A Weight mounting base B Unit weight K Crane 1 Weight base plate 2 Weight fitting frame 3 Holder part 4 Diagonal frame 5 Base 6 Pivoting hole 7 Suspending arm 7a Suspending arm base end 7b Suspending The upper end of the arm 8a Pivot hole 8b Pivot hole 9 Hanging part 10 Metal rod shaft 11 Metal rod 12 Pin 13 Crane hanging ring 14 Hanging chain 14a Each end of hanging chain 15 Lifting part 16 Anti-slip convex part 17 Non-displacement Recess 18 Horizontal groove 19 Circular metal reinforcing plate

Claims (2)

[Scope of utility model registration request] 1. A four-diagonal direction of a square metal weight base plate (1) having a weight mount A and a unit weight B, the weight mount A having a weight fitting frame (2) on the upper surface thereof. A holder part (3) is provided on the upper end of the holder part (3), and a base end part (7a) of a hanging arm (7) having a hanging part (9) at the upper end part is provided on the holder part (3) within a predetermined angle range. A hanging chain (14) of the same length, which is pivotally attached so as to swing, and is branched from the crane hanging ring (13) to each of the hanging parts (9).
The weight for lane inspection is constituted by engaging each tip (14a) of the above, and the unit weight B includes several weight units loosely fitted to the weight fitting frame (2). 2. The unit weight B is a cube, and a lifting portion (15) and a shift-preventing convex portion (16) are formed on the upper surface of the unit weight B, and a shift-preventing concave portion that is fitted to the shift-preventing convex portion (16) on the bottom surface. (1
The weight for crane inspection according to claim 1, which forms 7).