CN206679221U - A kind of light draft Float Gauge for Measuring - Google Patents

Abstract

A draft measurement ruler for an empty ship, comprising a horizontal plate, a vertical transparent tube is connected to the bottom of the horizontal plate, a scale layer is arranged on the transparent tube along the length direction of the transparent tube, and a water inlet valve is arranged at the bottom of the transparent tube, The inside of the transparent tube is provided with a pull rod whose bottom end is connected to the water inlet valve. A support frame is provided on the upper surface of the horizontal plate opposite to the transparent tube. The support frame is provided with symmetrical through holes, and the two shafts that can rotate relative to the support frame The end passes through the through hole at the corresponding end, and the through hole is larger than the diameter of the rotating shaft. The top end of the tie rod penetrates the horizontal plate from bottom to top and is rotatably connected with the rotating shaft. It also includes a control plate inclined upward, and the lower end of the control plate is connected to the rotating shaft. . The light-ship draft measuring ruler can accurately measure the light-ship draft to obtain accurate light-ship weight.

Description

A draft measuring ruler for an empty ship

technical field

The utility model relates to an empty ship draft measuring ruler in a ship.

Background technique

The ship's load capacity is the main indicator reflecting the ship's ability to load cargo, and is an important factor that can bring economic benefits to the shipowner. There are clear requirements for the load capacity in the technical specifications and construction contracts. If the load exceeds the allowable load For the range of weight, a fine will be imposed according to a certain percentage, and there is even a risk of the owner abandoning the ship. At present, the calculation formula of the ship's load capacity is: maximum load capacity = maximum displacement - light ship weight, so the light ship weight is an important factor affecting the actual load capacity of the ship.

The calculation of light ship weight depends on the draft of the ship, and the method of measuring the draft in the shipbuilding industry generally adopts visual inspection. Although the visual inspection method is simple and the measurement cost is low, it will be limited by the experience of the surveyor and environmental factors (such as wind, waves, etc.) etc.) will lead to large deviations in the read data. Generally, the displacement change corresponding to the change of draft per centimeter of the ship is 30 tons to 100 tons, which means that even if the draft deviation is only 1cm, the weight of the ship will produce a deviation of 30 tons to 100 tons, so the visual method is used to measure There are huge risks in reading draft.

Utility model content

The utility model aims to provide an empty ship draft measuring ruler which can accurately measure the empty ship draft, and the accurate empty ship weight has been obtained.

A draft measuring ruler for an empty ship according to the utility model comprises a horizontal plate, a vertical transparent tube is connected to the bottom of the horizontal plate, and a scale layer is arranged on the transparent tube along the length direction of the transparent tube, and the bottom of the transparent tube is A water inlet valve is provided, and the bottom end of the transparent tube is provided with a pull rod connected to the water inlet valve. A support frame is provided on the upper surface of the horizontal plate opposite to the transparent tube, and symmetrical through holes are provided on the support frame, which can be relatively The two ends of the rotating shaft that the support frame rotates pass through the through holes at the corresponding ends. The through holes are larger than the diameter of the rotating shaft. The lower end is connected with the rotating shaft.

In the draft measuring ruler for an empty ship described in the utility model, the end of the horizontal plate without the control rod is closely attached to the draft mark Dr on the outer plate of the ship. At this time, the transparent tube is immersed in water to keep the horizontal plate in a horizontal state. , press down the control pressure plate, the end of the control pressure plate connected to the rotating shaft is upturned, and drives the rotating shaft to move up slightly along the through hole of the support frame, thereby driving the pull rod rotatably connected to the rotating shaft to move upward, and the pull rod drives the water inlet valve to open. The pressure is greater than the internal pressure of the transparent tube. At this time, the water is pressed into the transparent tube, and then the control pressure plate is released, the pull rod is not stressed, and moves down under its own gravity, and drives the control pressure plate to rise. At the same time, the water inlet valve is closed. At this time, the liquid level in the transparent tube is the same as the external water surface, and the liquid level height reading Dm is read through the scale layer on the transparent tube, and the above method is repeatedly measured several times to obtain the average value of the liquid level reading Dv. The maximum value of the scale layer is Dx, and the distance from the mantissa of the scale layer of the transparent tube to the bottom surface of the horizontal plate is Dc, so the draft of the empty ship can be obtained by the formula Df=Dr-(Dx-Dv+Dc), so that the empty ship can be known the weight of. Through the measurement of the measuring ruler, it can effectively avoid the influence of manual visual inspection due to experience and environmental factors, improve the accurate measurement of the draft of the empty ship, improve the accuracy of the weight value of the empty ship, and avoid overloading of the ship or insufficient loading due to errors. cause economic loss to the shipowner.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

A kind of airship draft measuring ruler, as shown in Figure 1, comprises horizontal plate 1, and the bottom of horizontal plate 1 is connected with vertical transparent tube 2, along the length direction of transparent tube 2, is provided with scale layer on transparent tube 2, The bottom of the transparent tube 2 is provided with a water inlet valve 3, the inside of the transparent tube 2 is provided with a pull rod connected to the bottom end of the water inlet valve 3, and the upper surface of the horizontal plate 1 opposite to the transparent tube 2 is provided with a support frame 4, The support frame 4 is provided with symmetrical through holes, and the two ends of the rotating shaft 5 that can rotate relative to the supporting frame 4 pass through the through holes at the corresponding ends. The through holes are larger than the diameter of the rotating shaft 5. 5 is rotatably connected, and also includes a control pressure plate 6 inclined upwards, and the lower end of the control pressure plate 6 is connected to the rotating shaft 5 .

The upper surface of the horizontal plate 1 is also provided with a spirit level 7. By setting the level instrument 7, the levelness of the level plate 1 is effectively guaranteed, and the levelness of the measuring ruler is guaranteed as a whole, thereby ensuring the accuracy of the empty ship weight.

An elastic limit structure is provided between the tail of the control pressure plate 6 and the horizontal plate 1, and the elastic limit structure includes a vertical shaft 8 arranged on the horizontal plate 1, and a compression spring 9 with a length longer than the vertical shaft 8 is set on the vertical shaft. 8, the top of the stage clip 9 is connected to the bottom surface of the control plate 6. Because the stage clip 9 has elastic force, it is necessary to use force when pressing the control plate 6 manually, so that the downward movement of the control plate 6 will not be too large. The service life of the control platen 6 is extended.

Between the control pressure plate 6 and the horizontal plate 1, there is also a shrapnel 10 fixedly installed on the horizontal plate 1, through the double protection of the control pressure plate 6 by the shrapnel 10 and the elastic limit structure, further preventing the control pressure plate 6 from pressing down too much .

A part of the outer wall of the transparent tube 2 is wrapped with a stainless steel shield 11 to prevent the transparent tube 2 from being damaged.

A reinforcing plate 12 connecting the stainless steel shield 11 and the horizontal plate 1 is arranged, which is not only convenient for carrying and hanging the measuring ruler, but also can effectively strengthen the overall strength of the measuring ruler.

A handle 13 is provided on the bottom surface of the end of the horizontal plate 1 with one end of the control pressing plate 6 to facilitate pressing the control pressing plate 6 .

The transparent tube 2 is a glass tube.

Claims (8)

1. An empty ship draft measuring ruler is characterized in that: it comprises a horizontal plate (1), and a vertical transparent tube (2) is connected to the bottom of the horizontal plate (1), along the length direction of the transparent tube (2), in the transparent The tube (2) is provided with a scale layer, the bottom of the transparent tube (2) is provided with a water inlet valve (3), and the inside of the transparent tube (2) is provided with a pull rod connected to the bottom end of the water inlet valve (3). The upper surface of the horizontal plate (1) opposite to the transparent tube (2) is provided with a support frame (4), and the support frame (4) is provided with symmetrical through holes, and a rotating shaft (5) that can rotate relative to the support frame (4) The two ends pass through the through holes at the corresponding ends. The through holes are larger than the diameter of the rotating shaft (5). The top of the tie rod penetrates the horizontal plate (1) from bottom to top and is rotatably connected to the rotating shaft (5). It also includes a control plate that is inclined upward. (6), the lower end of the control pressure plate (6) is connected with the rotating shaft (5). 2. A light-ship draft measuring ruler according to claim 1, characterized in that: a spirit level (7) is also provided on the upper surface of the horizontal plate (1). 3. A light ship draft measuring ruler according to claim 1, characterized in that: an elastic limit structure is arranged between the tail of the control plate (6) and the horizontal plate (1), and the elastic limit The structure includes a vertical shaft (8) arranged on the horizontal plate (1), a compression spring (9) with a length longer than the vertical shaft (8) is sleeved on the vertical shaft (8), and the top of the compression spring (9) is in contact with the control pressure plate ( 6) Bottom connection. 4. A light-ship draft measuring ruler according to claim 3, characterized in that: between the control plate (6) and the horizontal plate (1), there is also a fixed mounting on the horizontal plate (1) Shrapnel (10). 5. The light-ship draft measuring ruler according to claim 1, characterized in that: a part of the outer wall of the transparent tube (2) is wrapped with a stainless steel shield (11). 6 . The light-ship draft measuring ruler according to claim 5 , characterized in that: a reinforcement plate ( 12 ) connecting the two is provided between the stainless steel shield ( 11 ) and the horizontal plate ( 1 ). 7. A light-ship draft measuring ruler according to claim 1, characterized in that: a handle (13) is provided on the bottom surface of the end of the horizontal plate (1) having one end of the control plate (6). 8. A light-ship draft measuring ruler according to any one of claims 1-7, characterized in that: the transparent tube (2) is a glass tube.