JPH0639886U - End structure of wire for hoisting equipment - Google Patents

Abstract

(57) [Summary] [Purpose] When a wire end is subjected to terminal treatment, the treated portion tends to deteriorate due to the influence of heat or the like. Therefore, there is a possibility that a falling accident may occur due to cutting at the deteriorated portion of the wire end, but a means for surely avoiding the occurrence of the accident is provided. [Structure] The wire locking portion B is composed of a tapered cylindrical portion 3a having an inner peripheral surface with a reduced diameter. The tapered cylindrical portion 3a is provided with an outer peripheral surface having a downwardly reduced diameter that is in contact with the inner peripheral surface of the tapered cylindrical portion 3a and receives a wedge action. Based on the wedge action, a portion adjacent to the installation location of the end cylindrical body 4 in the end portion 1a is provided. The split wedge body 5 that is tightened and held is installed. On the upper part of the wire locking portion B, a straight tubular portion 3b into which the end tubular body 4 is fitted with a margin is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an end structure of a wire for a hoisting device, and more specifically, a wire insertion portion through which a wire for a hoisting device that is wound around a rotary drum at the time of hoisting can be inserted is provided in a part of the hoisting device. An end cylinder having an outer diameter larger than the minimum inner diameter of the wire locking part in the wire insertion part is integrated with the end part of the wire passed through the wire insertion part while accommodating the end part inside. The present invention relates to an end structure of a wire for a hoisting device in which the end portion of the wire is subjected to a terminal treatment.

[0002]

[Prior art]

 As shown in FIG. 4, the conventional wire 1 for a hoisting device usually has a plurality of child ropes twisted around a steel wire around a core rope (for example, hemp rope) impregnated with lubricating oil. In addition, it is configured by winding and mounting in a twisted state. In order to wind the wire 1 around the winding drum 2 of the hoisting device, and when the end portion 1a thereof is locked to the drum 2, a wire insertion portion A through which the wire 1 can be inserted is provided in a part of the hoisting device. After the end portion 1a of the wire 1 is passed through the wire insertion portion A, the twisted portion of the end portion 1a is returned, and the twisted-back portion is opened in a conical shape to form a break portion. By melting lead, bavit alloy, etc. around the portion and solidifying the melted material with the breaker portion positioned inside, the end cylinder 4 integrated with the end portion 1a is formed. The terminal processing of the end unit 1a was performed. The wire insertion portion A is configured such that the main portion thereof has a straight inner peripheral surface having the same diameter in the longitudinal direction, and the inner peripheral surface having a diameter smaller than the inner peripheral surface of the main portion is formed at the lowermost portion. Was provided with a wire locking portion B. Then, the outer diameter of the end tubular body 4 is configured to be larger than the inner diameter of the wire locking portion B, and the lower surface of the end tubular body 4 is supported on the upper surface of the wire locking portion B. The end portion 1a of the wire 1 is locked. Further, the end portion 1a of the wire 1 is provided with an aluminum sleeve (not shown) having an outer diameter larger than the inner diameter of the wire locking portion B (that is, larger than the minimum inner diameter of the wire insertion portion A). The end cylinder 4 is also configured by being fitted externally, caulking the sleeve, and biting the inner peripheral portion into the end portion 1a to integrate the sleeve.

[0003]

[Problems to be solved by the device]

 However, in the conventional structure in which the end cylinder 4 is formed by melting the lead or the Babbitt alloy or the like, the end portion 1a of the wire 1 (in particular, the core rope forming the core portion) is The wire 1 is subjected to a load because it is burned and deteriorated due to the heat of the melt such as lead or bavit alloy, and the deteriorated part corresponds to a part of the locking part by the wire locking part B. However, there is a problem in that cutting may occur at the deteriorated portion and a load suspended by using the wire 1 may fall. Also in the conventional structure in which the sleeve is crimped to form the end cylinder 4, the end portion 1a of the wire 1 deteriorates during the crimping process, and the deteriorated portion is locked by the wire locking portion B. Since it corresponds to a part of the portion, when the load is applied to the wire 1, cutting may occur at the deteriorated portion, and the load suspended by using the wire 1 may fall accidentally. There was a problem that there was. The present invention has been made by paying attention to such an actual situation, and an object thereof is to provide means for surely avoiding the occurrence of the above-mentioned drop accident.

[0004]

[Means for Solving the Problems]

 The wire end structure for a hoisting device according to the present invention is provided with a wire insertion portion, which allows a wire for the hoisting device to be wound around a rotary drum during hoisting, to be inserted in a part of the hoisting device, An end cylinder having an outer diameter larger than the minimum inner diameter of the wire locking portion of the wire insertion portion is integrally provided at the end portion of the passed wire while accommodating the end portion inside. According to the end structure of the wire for a hoisting device, the wire engaging portion is formed by a taper cylinder portion having an inner peripheral surface with a reduced diameter. The cylindrical portion is provided with an outer peripheral surface that is in contact with the inner peripheral surface thereof and has a downwardly reduced diameter that receives a wedge action, and based on the wedge action, tightens the adjacent portion of the end portion where the end cylindrical body is installed. Hold the split wedge It is characterized in that it is internally provided with a straight tube portion above the wire locking portion to allow the end tube body to be fitted therein with a margin.

[0005]

[Action]

 According to this structure, since the split-type wedge body is supported by the taper cylinder portion, and the portion adjacent to the installation location of the end cylinder body is tightened and held by the split-type wedge body, at least the split-type wedge body is supported. Only the height of the wedge (when the end portion is further passed through the wire insertion portion and the terminal treatment is performed, only the length of the extra portion is added to the height) The locking portion of the wire (that is, the locking portion of the wire by holding and holding the split wedge body) can be displaced downward from the lower end of the end cylinder.

[0006]

[Effect of device]

 Therefore, the locking portion of the wire is appropriately displaced from the deteriorated portion of the end portion of the wire (that is, the deteriorated portion caused by the burning due to the heat or the deteriorated portion caused by caulking), It will be possible to suppress the occurrence of cutting accidents in the field. Moreover, since the outer diameter of the end cylinder is larger than the minimum inner diameter of the wire locking portion, even if the split wedge body is damaged, the minimum diameter of the wire locking portion is minimized. It becomes possible to support the lower surface of the end tubular body at the inner diameter portion or the upper side adjacent portion thereof. As a result, according to the end structure of the present invention, it is possible to reliably prevent the accident of dropping a load suspended by using the wire, and it is possible to achieve the object of the present invention.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a main part of an embodiment of an end structure of a wire for a hoisting device of the present invention, and FIG. 3 shows an overall structure of a hoisting device including the wire. Has been done. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.

Reference numeral 1 in the figure indicates the wire, and the wire 1 is a core rope (for example, hemp rope) impregnated with lubricating oil, which comprises a plurality of child ropes formed by twisting steel strands. It is configured by being wound around and attached in a twisted state. The end portions 1a at both ends of the wire 1 are subjected to a terminal treatment for retaining and locking, and the end portions 1a are respectively passed through the wire insertion portions A provided in a part of the hoisting device. Thus, the terminal processing is locked while being prevented from coming off. A hook block 1b for hooking and suspending a load is attached at an appropriate position on the wire 1. The wire 1 is configured to be wound around a rotary drum 2 which is rotationally driven by a rotational drive source (not shown) when raising a load suspended by the hook block 1b.

The terminal treatment performed on the end portion 1a of the wire 1 will be further described. A part of the hoisting device (specifically, a non-rotating part of the hoisting device) is provided with a wire insertion portion A through which the wire 1 can be inserted, and the wire insertion portion A is shown in FIG. As shown in the drawing, a cylindrical body 3 in which a tapered cylindrical portion 3a which substantially functions as a wire locking portion B and a straight cylindrical portion 3b adjacent to the tapered cylindrical portion 3a are integrated is fitted and mounted. The outer diameter of the end portion 1a of the wire 1 that has passed through the tubular body 3 is larger than the minimum inner diameter of the wire insertion portion A (that is, the minimum inner diameter of the wire locking portion B). By arranging the sized end cylinder 4 integrally while accommodating the end portion 1a inside, the end portion 1a of the wire 1 is subjected to terminal treatment.

Specifically, the end cylinder 4 is formed as follows. That is, the twisted portion of the end portion 1a of the wire 1 is returned, and the twisted-back portion is opened into a conical shape to form a cracked portion, and lead, a bavit alloy, etc. are melted around the cracked portion, and the melted material is melted. The end cylindrical body 4 is formed by solidifying the end portion 1a and the end portion 1a in an integrated state while the breaker portion is located inside.

[0012] Specifically, the tapered cylindrical portion 3a that substantially functions as the wire locking portion B is formed of a cylindrical portion having an inner peripheral surface with a reduced diameter. Further, specifically, the straight tubular portion 3b is configured by a cylindrical portion into which the end tubular body 4 is fitted in the upper portion of the wire locking portion B with a margin.

The taper cylinder portion 3a is provided with an outer peripheral surface of a lower diameter which is in contact with the inner peripheral surface of the taper cylinder portion 3a and receives a wedge action, and the end cylinder of the end portion 1a is formed based on the wedge action. A split-type wedge body 5 for tightening and holding the portion adjacent to the installation location of the body 4 is installed. The split wedge body 5 is configured as a split type (in this embodiment, three-split type) as shown in FIG. 2 in order to facilitate the internal fitting to the tubular body 3. .

According to the end structure having such a configuration, the split wedge body 5 is supported by the tapered tubular portion 3 a, and the split wedge body 5 serves to attach a portion adjacent to the installation location of the end tubular body 4. Since it is clamped and held, at least the height of the split wedge body 5 (in this embodiment, the end portion 1a is slightly passed through the wire insertion portion A and the terminal treatment is performed. Therefore, the extra length of the wire is added to the height). The engaging portion of the wire 1 (that is, the engaging portion of the wire 1 by holding the split wedge body 5 tightly). Can be shifted downward from the lower end of the end tubular body 4. Therefore, the locking portion of the wire 1 is displaced by a considerable distance from the deteriorated portion of the end portion 1a of the wire 1 (that is, the deteriorated portion caused by the heat burn) to prevent the disconnection accident at the deteriorated portion. It becomes possible to suppress the occurrence. Moreover, since the outer diameter of the end tubular body 4 is larger than the minimum inner diameter of the wire locking portion B (that is, the taper tubular portion 3a), the split wedge body 5 may be damaged. Even if it occurs, it becomes possible to support the lower surface of the end tubular body 4 at the minimum inner diameter portion of the wire locking portion B or the upper adjacent portion thereof.

Next, another embodiment will be described. An aluminum sleeve (not shown) having an outer diameter larger than the inner diameter of the wire locking portion B is externally fitted to the end portion 1a of the wire 1, and the sleeve is caulked to the end portion 1a. The structure of the present invention described above can be applied as it is to the one in which the end cylinder 4 is configured by biting into and integrating.

Further, even when the wire insertion portion A is provided at the end portion of the rotary drum 2, the present invention can be applied.

Further, if the upper and lower ends of the inner peripheral surface of the split wedge body 5 are rounded, the inner peripheral surface of the wedge body 5 will be soft against the wire 1. Therefore, the execution of the R processing is one effective means for avoiding the occurrence of the wire 1 cutting accident.

Further, even when the wire 1 is stretched in a W shape in the middle via an equalizer sheave (in the above-described embodiment, it is simply stretched in a V shape), the present invention Can be applied.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an end structure of a wire for a hoisting device according to the present invention.

FIG. 2 is a perspective view showing the main part thereof.

FIG. 3 is a perspective view showing a hoisting device including the wire.

FIG. 4 is a longitudinal sectional view showing an end structure of a conventional wire for a hoisting device.

[Explanation of symbols]

 1 wire 1a end part 2 rotating drum 3a taper cylinder part 3b straight cylinder part 4 end cylinder body 5 split wedge body A wire insertion part B wire locking part

Claims (1)

[Scope of utility model registration request] 1. A wire insertion portion (A) through which a wire (1) for a hoisting device that is wound around a rotary drum (2) at the time of hoisting can be inserted is provided in a part of the hoisting device, and the wire insertion part (A) is provided. End part (1a) of the wire (1) passed through A)
In addition, an end cylinder (4) having an outer diameter larger than the minimum inner diameter of the wire locking portion (B) in the wire insertion portion (A) is integrated while accommodating the end portion (1a) inside. The end structure of the wire for a hoisting device, in which the end portion (1a) is subjected to the terminal treatment by providing the end portion (1a), wherein the wire locking portion (B) has an inner peripheral surface with a reduced diameter. The taper tube portion (3a), and the taper tube portion (3a)
In contrast to a), there is provided an outer peripheral surface which is in contact with the inner peripheral surface thereof and which has a downwardly reduced diameter, and on the basis of the wedge effect, the installation location of the end tubular body (4) in the end portion (1a). A straight cylinder part (3) in which a split-type wedge body (5) for tightening and holding adjacent parts is internally provided, and the end cylinder body (4) is fitted in the upper part of the wire locking part (B) with a margin.
b) End structure of hoisting device wire provided.