JPH0554477U - Crane with audio device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] Cry with audio device that prevents collisions between suspended members and surrounding workers and suppresses audio from alarm devices.
Service. According to the present invention, in a crane used for moving a construction member or the like, an alarm device having a plurality of wireless signal channels attached to a crane hook 2 and a transmitter 3 for operating the alarm device are provided. It is a crane with an audio device.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention mainly relates to a crane for moving construction members at a construction site or the like.

[0002]

[Prior Art]

 When moving a construction member at a construction site, etc., if the member is heavy, or if it is large and bulky, use cranes to lift the members, carry them to their destinations, and then unload them to the ground work site again. There are many. However, if the crane becomes huge, the operator of the crane will not be able to receive the operator's support and warning because the operator will be separated from the operator around the member to be transported. For this reason, the worker did not notice the position and direction of the member that was suspended in the air and became unstable, and there was a risk of colliding with the member and causing injury. In order to solve such problems, the following methods have been conventionally used. <A> A small alarm is attached to the crane hook that hooks the member, and an alarm sound is emitted while the member is moving to alert the worker. <B> An alarm sound is emitted by attaching an alarm device to the rear part of the turning part of the crane or to a tower post and performing remote control using a cable or the like.

[0003]

[Problems to be solved by the device]

 The above conventional technique has the following problems. <A> Not only the alarm device but also the alarm switch was attached to the crane hook, so the alarm device could not be operated after the crane hook left the ground, and the practical effect was low. <B> Since the position of the alarm device is fixed at one place, it was necessary to raise the volume of the alarm when the distance between the alarm device and the workers around the members was long. As a result, there were many cases where the equipment could not be used due to complaints such as noise from the neighborhood.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problems, and is a crane with an audio device that prevents a collision between a suspended member and a surrounding worker and suppresses a sound from an alarm device. , Is intended to provide. That is, the present invention comprises an alarm device having a plurality of radio signal channels attached to a crane hook in a crane used for moving construction members and the like, and a transmitter for operating the alarm device. It is a crane with a voice device.

[0005]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. <A> Description of the alarm device 4 (FIGS. 1 and 2) The alarm device 4 in which the receiving antenna 5, the audio device 6, and the receiver 7 are integrated is attached to the crane hook 2. The mounting position is preferably mounted on the side surface of the crane hook 2 so as not to hinder the movement of the hoisted construction member 10. The alarm 4 receives a signal from the transmitter 3 remotely operated by the crane operator 8 on the ground by the receiving antenna 5, the receiver 7 interprets the signal, and the voice device 6 emits a sound to perform the work. It is intended to alert the staff. The receiving antenna 5 is preferably a whip antenna having a vinyl code line of 80 cm, and the voice device 6 is preferably a directional horn speaker.

<B> Description of Transmitting Device (FIG. 1) Since the sound from the voice device 6 is intended to alert the worker 9 around the crane hook 2, the voice is the voice of the operator 8 and the buzzer. It may be sound or electronic sound. Therefore, the transmitting device 3 uses a radio signal of two channels and can switch to a real voice or a buzzer sound depending on the situation. Therefore, the transmitter 3 is provided with an all-weather microphone for the real voice. Further, the transmitting device 3 is incorporated in the crane operating device and uses the power source in the crane operating device to make a call. The transmitting device 3 is in communication with the antenna cable 12 above the crane 1, and the end of the antenna cable 12 is in communication with the transmitting antenna 11 fixed to the crane 1. A 20 cm whip antenna may be used as the transmitting antenna 11. Further, since only the hoisting wire is used as an intermediary between the crane hook 2 and the boom, the signal cable cannot be laid. Therefore, it uses 50 channel W 130MHz band 2 channel weak radio wave which does not require the approval of the Ministry of Posts and Telecommunications. By doing so, normally two AA batteries can be continuously used for about 200 hours.

[0007]

(Operation) (FIG. 1) The operator 8 operates the crane 1 to hook the construction member 10 on the crane hook 2 and lift it to move it. However, the usual crane 1 used at a construction site has a distance A between the crane hook 2 and the leg of the crane 1 of about 30 meters, so that the caution of the crane operator 8 is constructed. Often it does not reach the workers 9 around the member 10. In that case, first, the alarm device 4 is attached to the side surface of the crane hook 2, and then the crane 1 is operated to move the construction member 10. Depending on the movement state of the construction member 10, the operator 8 uses the transmitter 3 incorporated in the crane operation device to confirm the position of the construction member 10 and the fact that the construction member 10 is moving around the construction member 10. Inform member 9. At this time, the real voice and the buzzer sound are switched according to the situation. That is, when it is necessary to give an instruction, a real voice is used, and a microphone installed in the transmitter 3 is used to make a voice from the alarm device 4. The transmitting device 3 is connected to the transmitting antenna 11 through the antenna cable 12, and a radio signal is emitted from the transmitting antenna 11 by operating the transmitting device 3. The reception antenna 5 of the alarm device 4 catches this radio wave signal and sends it to the receiver 7, and a sound is generated from the audio device 6. By doing the above, the worker 9 on the ground can know the position and existence of the construction member 10 lifted in the air and can avoid the risk of colliding with the construction member 10.

[0008]

[Effects of the Invention] Since the invention is as described above, the following effects can be obtained. <a> An alarm device is attached to the crane hook so that the operator of the crane can remotely control the sound from the alarm device. Therefore, the sound emitted from the alarm device can easily reach the workers around the construction member, and the attention can be called with a small sound volume. Therefore, unlike the conventional alarm device that is fixed in one place, it is not necessary to raise the volume and noise can be suppressed. <B> The transmitter uses wireless signals of multiple channels, and can switch to a real voice or buzzer sound depending on the situation. Therefore, it is possible to give specific instructions and cautions to the operator by the voice of the operator. Therefore, unlike the conventional case where the worker is alerted only by the alarm sound, the danger can be further avoided.

[Brief description of drawings]

1 is a schematic diagram of the use of the present invention.

[Figure 2] Enlarged view of the alarm device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeo Kushibiki 4-19-13 Hakami, Hamura-cho, Nishitama-gun, Tokyo

Claims (1)

[Scope of utility model registration request] 1. A voice device comprising a warning device having a plurality of radio signal channels attached to a crane hook in a crane used for moving construction members and the like, and a transmitter for operating the warning device. Crane with.