JPS6036233A - Bridging body for pit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a crosslinked body for bits according to the general concept of claim 1.

In the case of these bridges, it is advantageous for the bridge plate and its extension to move negatively to its resting position when the vehicle loading and unloading the cargo moves away from the pit and away from the bridge. Failure to do so may result in a dangerous situation, especially if the driver is inattentive.

PROBLEM TO BE SOLVED BY THE INVENTION The basic problem of the invention is to improve the structure of the frame 41 mentioned at the beginning, so that when said vehicle leaves the pit, it is ensured that the structure will return to its resting position. The aim is to make sure that the

10] Means for Solving the Problem According to the present invention, an ultrasonic device (detection device) is provided for the above-mentioned crosslinked body for vehicles, etc. that are in contact with the crosslinked body. The active element of this ultrasonic detection device is located in the area of the end face of the bridge plate.

In addition to being able to record the vehicle, the ultrasonic detection device described above can act on the control device of the bridge to return the bridge to its rest position. This is for example the retraction of the lifting extension of the bridge deck,
Caused by the lowering of the bridge deck to the pit plane. Naturally, it is necessary to provide ordinary switching and control means for this purpose, and this is not individually the subject of this invention.

In special cases, two ultrasonic transmitters and two ultrasonic transmitters can be used. Each of these can be provided on one side of the crosslinking device. These factors are based on the knowledge that if each vehicle uses a certain width and there is a narrow object that needs to be captured in front of the bridge, no reaction of the ultrasonic device can occur. Connected in such a way that incorrect ratings by the receiver will not occur.

Furthermore, it is advantageous to couple the control of the bridge to the ultrasonic device so that the ultrasonic device is only connected when the extension is protruded or flipped up.

Example Further notes regarding the figure showing one embodiment are given below.

Is the bridge plate 1 at the rear end centered around the shaft 2 in the pit 3? The f'+ shaft is supported so as to swing above the rectangular parallelepiped notch of the pit 3. The free dry part of the bridge plate 1 has an extension 4 that can be pulled out and retracted, and when the bridge is in use, the bridge plate 1 can be moved onto the cargo loading/unloading platform 5 of a vehicle or similar object via this extension. supported by. The extension 6 is slidably supported by the slider 6. The drawing and retraction are performed by the working cylinder 7.

On both sides of the bridge plate 1, there are iron plates 8 extending vertically downward in the longitudinal direction.
It has been extended and is useful for attaching beam 9. A cylinder 10 is engaged with this beam, and the bridge plate 1 can be swung upward.

The front side of the bridge plate 1 is closed by an end plate II. Behind the end plate 1 are two ultrasonic devices 11 and 12. It has a transmitter and a receiver in the usual manner. For this purpose, the end plate 11 is provided with a breakout section and subjected to ultrasonic action. It also preserves the heat theory equipment. These ultrasonic devices are capable of capturing a vehicle with platform 5 and are arranged to notify the fi control of the bridge as soon as the vehicle leaves the bridge.

When such an announcement is made by the two devices, the bridge deck l is first swiveled upwards with the cylinder 10 by means of a control device known per se. The extension 4 is then completely retracted by the working cylinder 7 and the bridge plate 1 is subsequently lowered to the surface of the pit 3. This final position of the bridge plate 1 is usually secured by a stop member.

The connection of the ultrasonic device occurs with the actuation of the slider 6 or with the protrusion of the extension into the position of the tooth 1. Conveniently, the disconnection is effected by a switch or the like.

This switch (j) must work in the rest position of the bridge plate 1. Therefore, it must be a limit switch that can be actuated by the bridge plate 1.

The invention can also be fully implemented in the case of a frame body having a tiltable extension. In that case, the extension in the active position is approximately in the plane of the bridge, and the extension in the rest position is the bridge that turns vertically downwards. Under these preconditions, the detection device is located in front of the bridge plate and at a stationary position of 1 t.
・It is installed to protect the extension part located at ``, and hide it behind it.

[Brief explanation of the drawing]

Figure 1 is a longitudinal center cross-sectional view of the cross-linked body in use.
Figure 2 is a plan view of the crosslinked body of Figures 2 and 1. Symbols in the figure 1...Bridge board, 2...Axle, 3...Pit, 4...
Processing section, 5... Platform, 6... Slider, 7... Working cylinder, 8... Iron plate, 9... Shio,
lO...Cylinder, 11.12...Ultrasonic device t1
゜Agent Hikaru Esaki Kodo Koji Esaki

Claims (1)

[Scope of Claims] Y] It has a bridge plate supported at the rear end so as to be swingable around the horizontal flow line of the pit, and this bridge plate is placed on a platform for loading and unloading cargo. In a focusing cross-linked body having a removable and possibly swingable extension for supporting, the cross-linked body (1!j) has an ultrasonic detection device for detecting a vehicle with a platform, etc. A cross-linked body for a bit, characterized in that the activity element of the ultrasonic detection device is provided in the sacrum region of the end face of the bridge plate. 2) The ultrasonic detection device is electrically connected by the protrusion of the extension part. , the crosslinked product according to claim 1). 3) The ultrasonic detection device is electrically transmitted by the desk plate reaching the rest position, and the transmitting part of one of these transmitters/receivers (together with the receiver) is connected to one side. Oni's transmitter (along with the receiver) is on the opposite side of the bridging plate,
A crosslinked product according to claim 1). 5) The crosslinked body according to claim 1, wherein the ultrasonic detection device or a portion thereof is protected behind the end face of the bridge board. 6) The crosslinked body according to claim 3, wherein the bridge plate is also provided with a terminal switch for electrically interrupting the ultrasonic detection device. 7) The bridge according to claim 1), wherein the ultrasonic sensing device or a part thereof is protected by being covered behind an extension part that swings downward and is in a rest position. body. 8] The frame (1?h body) according to claim 4, which is configured such that the two transmitters or receivers do not affect the bridge body only when they do not detect a vehicle or the like.