JPS6235217A - Tracking device for three-dimensional mobile body - Google Patents

Abstract

PURPOSE:To maintain safety of the hull and a connection part of a pipeline by moving three-dimensionally a measuring lever equipped with an adsorber fixed on the hull directly and measuring the quantity of movement of the hull with respect to a berth and actuating an alarm sounder in case it exceeds a mobile tolerance of the connection part of the pipeline. CONSTITUTION:A supporting frame 13 turnable in a horizontal direction is provided on a pedestal 11 equipped with a Y axis detection part 12 and a slider guide 14 which can be oscillated in a vertical direction on the supporting frame 13 and installs the measuring lever 15 movable in front and rear inside is provided on the supporting frame 13. Further, the adsorber 16 fixed on an object 1 to be detected is provided on the tip of the measuring lever 15 and further, an X axis detection part 19 and a Z axis detection part 20 are provided on a pivot part of the supporting frame 13 and a peak part of the slide guide 4 respectively.

Description

[Detailed Description of the Invention] 3 Title of the Invention (Field of Industrial Application) The present invention relates to a device for tracking and measuring three-dimensional movements, such as up and down, left and right, as well as front and rear. It concerns a tracking device for measuring accuracy.

(Prior Art) When transferring cargo such as LPG or LNG from a tanker to a tank on land, the connection on the ship is connected to the connection on the perspective side. Although this connection has some flexibility, the gas on board is extremely cold and there is a risk of explosion, so strong connections are required, and excessive movement of the ship is a danger to the connection. Because of this, it has become necessary to monitor the movement of the ship during cargo handling and transfer to ensure safety.

Conventional monitoring methods involve using a large number of mooring lines and measuring the tension in those lines to predict the movement of the ship. The sources of prediction information were wave tension, wave height, current direction, current velocity, etc.

However, although these conventional methods can predict the movement of the ship, they do not directly measure the amount of displacement, so the actual movement cannot be accurately grasped, which poses the problem of a loss of safety. Ta.

In cases where the ship is shaking violently due to wind and waves, countermeasures are taken such as temporarily suspending cargo handling, or disconnecting the ship from the connection on the perspective side and temporarily evacuating offshore. Direct measurement of these factors will allow us to take prompt action on these countermeasures, which is desirable from a safety standpoint.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a measuring rod with an adsorbent that is directly fixed to the object to be measured, and also moves the measuring rod three-dimensionally to cause the object to be measured to move. A support frame that can be rotated in the horizontal direction is provided on a pedestal equipped with a Y-axis detection unit, and the support frame can be swung in the vertical direction and can be moved back and forth inside. A slider guide equipped with a measurement rod is provided, and a suction element is provided at the tip of the measurement rod to fix it to the object to be detected.
It is characterized by a configuration in which a Z-axis detection section is provided at the top of each slider guide.

(Function) The measuring rod is pulled out from the slider guide to fix the suction element to the object to be measured, and the suction element moves following the movement of the object to be measured. In other words, the back and forth movement of the suction element is performed by the reciprocating movement within the slider guide of the measuring rod, the vertical movement is performed by the rocking movement of the slider kite at the pivot part of the support frame, and the left and right movement is performed by the movement of the support frame in the water direction. It is carried out by a turning movement.

(Example) FIGS. 1 and 2 show the present device, and FIG. 3 shows the device in use. Referring to FIG. 3, a tanker 1 is attached to a quay 2 with a cable 3. 3 and is moored just in front of berth 4. The berth 4 is provided with a pipeline connection section (not shown), and is connected to the onboard connection section of the tanker 1. Further, a pedestal 5.5 is installed on both sides of the berth 4, and a tracking device 10.10 of the present invention is installed.
is provided.

Next, the present apparatus will be explained in detail with reference to FIG. Frame 5
A pedestal 11 is provided on the pedestal 11.
2 is fixed. Further, a support frame 13 is provided on the upper surface of the Y-axis detection unit 12 so as to be able to rotate in the water direction.
Furthermore, a pipe-shaped slider kite 14 is provided on the support frame 13 so as to be able to vertically swing vertically.

The slider guide 14 accommodates a measuring rod 15 that is slidable in the longitudinal direction, and an adsorbent 1B formed by an electromagnet or the like is attached to one end of the measuring rod 15 via a universal joint 17.
is provided. On the other hand, guide frames 18 and 18 are provided before and after the slider guide 14 to guide the swinging motion of the slider guide. Furthermore, the guide frame 18 may have a structure that can guide the swinging motion of the slider guide 14 and determine the limit position of the inclination angle.

Reference numeral 19 indicates an X-axis detection unit provided at the pivot portion of the support frame 13;
0 is a Z-axis detector provided at the top of the slider guide 14, and these detector mechanisms, including the Y-axis detector 12, detect the amount of movement of the suction element 16 of the measuring rod 15. That is, the X-axis detector 18 detects the amount of vertical movement of the suction element 16, and the Y-axis detector 12 measures the amount of horizontal rotation.

Further, the Z-axis detection section 20 detects the amount of movement in the front and rear directions, and each detection section has a built-in disk encoder or the like.

In addition, disks 21 and 21 are provided near the end of the measurement rod 15 where the suction member 1B is provided and at the other end, and limit switches 22 and 22 that are in contact with the disks 21 and 21 are provided at both ends of the slider guide 14. measurement rod 1
5 is detected in the longitudinal direction. In addition.

A cover 23 having a bellows structure is attached to the total Δl-rod 15, and a power supply cord 24 is attached to the suction member 16, respectively.

Next, in order to measure the motion of the ship using this device, first, the tanker I is moored to the berth 4 with the cable 3.3, and then the measuring rod 15 is pulled out and the suction member 16 is fixed to the hull of the ship. Then, the pipeline and the onboard connection are connected, and once safety is confirmed, the power is turned on to start measuring the device.

The movement of a tanker is measured by directly measuring all movements in the x, y, and z axes as described above, and by integrating these three-dimensional movements, an alarm is issued if the movement exceeds the allowable range of the pipeline connection. Take measures such as issuing a signal, uncoupling the mooring room, issuing a stop signal for the transfer pump, or even configuring the connection part so that it can be removed in an emergency. This not only avoids damage to the ship's hull, but also prevents dangerous materials from exploding during transport.

In the example, this device is installed at two locations on the bow and stern sides,
Although the amount of movement back and forth relative to the perspective is measured, the mounting position of the device is selected arbitrarily.

(Effects of the Invention) The present invention measures the amount of movement of the ship body relative to the perspective by moving a measurement rod equipped with an adsorbent directly fixed to the ship body in three dimensions.
This system is designed to activate an alarm device when the allowable movement range of the pipeline connection part is exceeded, and has the effect of ensuring the safety of the ship's hull, perspective, and pipeline connection part.

[Brief explanation of the drawing]

Figure 1 is a side view of the entire device of the present application, Figure 2 is a rear view of the same,
FIG. 3 is a perspective view showing an example of the use of this device. 1... Tanker 2... Quay 3... Cable 4... Perspective 5... Frame
10... Three-dimensional tracking device 11... Pedestal
12... Y-axis detection unit 13... Support frame 14... Slider guide 15... Measuring rod 16... Suction piece 17... Universal joint 18... Guide frame 19...
・X-axis detection section 20...Z-axis detection section 21...
・Disc 22...Limit i switch 23...Cover 24...Court patent applicant Tsurumi Seiki Co., Ltd. agent Patent attorney Kiyoshi Nakayama Figure 3 Teitouri Neiichi official book (self-proposed) 1985 September 10th

Claims (1)

[Claims] A support frame that can rotate in the horizontal direction is provided on a pedestal equipped with a Y-axis detection unit, and a slider guide that can swing in the vertical direction and has a measuring rod inside that can be moved back and forth is attached to the support frame. In addition, an adsorbent for fixing to the object to be detected is provided at the tip of the measuring rod, and an X-axis detection section is provided at the pivot portion of the support frame, and a Z-axis detection section is provided at the top of the slider guide. Former mobile tracking device.