Ship draft measuring device
By designing a ship draft depth measurement device including a bracket and a transparent measuring cylinder, the design of annular ratchet and floating bodies solves the difficulty and safety hazards of draft depth measurement under the influence of wind and waves, and achieves accurate and safe draft depth measurement.
Patent Information
- Application Number
- CN202421480422.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-26
AI Technical Summary
In ship tilt test and empty ship test, wind and waves cause the water level at the digital position of the water ruler to rise and fall, increasing the difficulty of reading draft depth data and posing safety risks.
A ship draft measurement device including a horizontally arranged bracket and a transparent measuring cylinder is designed. An annular ratchet and a floating body are provided in the measuring cylinder. The floating body moves up and down through the impact of the waves, reads the water level difference value at the peak and troughs, and calculates the final draft depth based on the water scale value.
The device can accurately measure the draft depth, avoid errors caused by peaks and troughs, reduce measurement difficulty, eliminate safety hazards during readings, and be accurate to centimeters.
Smart Images
Figure CN222611356U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ship water gauge measuring equipment, in particular to a ship draft depth measuring device. Background Art
[0002] The ship inclination test and empty ship test are important tests that must be completed before the ship is delivered to verify the ship's stability parameters. The ship inclination test and empty ship test are mainly to determine the weight center of gravity of the ship after completion. When each ship is conducting an inclination test, measuring the draft is an indispensable step. When measuring the draft of the ship, the water level at the digital position of the water gauge has been fluctuating due to wind and waves, making it much more difficult to read the draft data, and the accuracy of the data will directly affect the result weight of the test ship. At the same time, in order to read the data accurately, it is necessary to lean out of the ship, and the reading personnel themselves also have great safety hazards.
[0003] Therefore, it is necessary to provide a ship draft depth measuring device to solve the above technical problems. Utility Model Content
[0004] The utility model aims to provide a ship draft depth measuring device for the deficiencies in the prior art, which is simple to operate and can accurately and safely read the draft depth data.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A ship draft depth measuring device comprises a horizontally arranged bracket, a group of transparent measuring cylinders are fixedly connected to the bracket, the interior of the measuring cylinder is connected with the bracket, a first strip-shaped water inlet groove is axially provided on the front of the measuring cylinder, a notch corresponding to the first water inlet groove is provided on the bracket, a second strip-shaped water inlet groove is axially provided on the back of the measuring cylinder, a scale is provided on the outer peripheral wall of the measuring cylinder located above the bracket, the measuring cylinder comprises a first measuring cylinder and a second measuring cylinder, the scale readings of the first measuring cylinder are arranged in increasing order from bottom to top, and the scale readings of the second measuring cylinder are arranged in increasing order from top to bottom, a plurality of annular ratchet teeth are evenly arranged on the inner peripheral wall of the measuring cylinder along the axial direction, the annular ratchet teeth are elastic, one annular ratchet tooth corresponds to one length unit of the scale, and a first annular Ratchet, the upper tooth surface of the first annular ratchet is perpendicular to the axial direction of the first measuring cylinder, and the lower tooth surface of the first annular ratchet is inclined inward from bottom to top. A second annular ratchet is arranged in the second measuring cylinder, and the upper tooth surface of the second annular ratchet is inclined inward from top to bottom, and the lower tooth surface of the second annular ratchet is perpendicular to the axial direction of the second measuring cylinder. The first measuring cylinder and the second measuring cylinder are respectively provided with a first float and a second float. The first and second floats are both conical structures. The first float is inserted into the first annular ratchet at the bottom of the first measuring cylinder, and the cone angle of the first float is set vertically upward, and the first annular ratchet cooperates with the cone surface of the first float. The second float is inserted into the second annular ratchet at the top of the second measuring cylinder, and the cone angle of the second float is set vertically downward, and the second annular ratchet cooperates with the cone surface of the second float.
[0007] Preferably, both ends of the measuring tube are screwed with screw caps, and the screw caps are hollow.
[0008] Preferably, a connecting rope is provided between the rotating cap at the top end of the first measuring cylinder and the rotating cap at the top end of the second measuring cylinder, and a connecting rope is also provided between the rotating cap at the bottom end of the first measuring cylinder and the rotating cap at the bottom end of the second measuring cylinder.
[0009] Preferably, a magnet is fixedly connected to one end of the bracket.
[0010] Preferably, the length of the ruler is 30 cm, and one length unit is 1 cm.
[0011] Preferably, a connecting rod is provided between the first measuring cylinder and the second measuring cylinder.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] 1. The water level at the crest and trough is measured by the first measuring tube and the second measuring tube respectively. The average of the difference between the two plus the water gauge value at the place where the measuring device is placed is the final draft depth data. The use of this device avoids the error caused by the crest and trough to the reading, making the data more accurate. At the same time, there is no need for manual real-time on-site reading. The device can be removed before reading, eliminating safety hazards and reducing the difficulty of measurement.
[0014] 2. Since the draft gauge of the ship's outer plate is large and the smallest unit length is 2 decimeters, it is difficult to measure the value accurately to centimeters. By using this measuring device, the draft depth can be measured accurately to centimeters, making the obtained value more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model;
[0016] Figure 2 yes Figure 1 Enlarged schematic diagram of point A in the middle
[0017] Figure 3 yes Figure 1 The enlarged schematic diagram of point B in the middle;
[0018] Among them, 1- bracket, 2- first water inlet tank, 3- scale, 4- first measuring cylinder, 5- second measuring cylinder, 6- first annular ratchet, 7- second annular ratchet, 8- first floating body, 9- second floating body, 10- screw cap, 11- connecting rope, 12- magnet, 13- connecting rod DETAILED DESCRIPTION
[0019] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.
[0020] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixed connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.
[0021] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.
[0022] like Figures 1 to 3As shown, a ship draft depth measuring device comprises a horizontally arranged bracket 1, on which a group of transparent measuring tubes are fixedly mounted, the inside of the measuring tubes is connected with the bracket, a first strip-shaped water inlet groove 2 is axially provided on the front of the measuring tube, a notch corresponding to the first water inlet groove is provided on the bracket, and the water inflow on the front of the measuring tube is greatly increased through the first water inlet groove and the notch of the bracket, so as to ensure that the floating body in the measuring tube can float up and down under the impact of the water flow, a second strip-shaped water inlet groove is axially provided on the back of the measuring tube, and the bracket corresponding to the second water inlet groove is not provided. The notch is provided to prevent the bracket from being disconnected from the notch. A scale 3 is provided on the outer peripheral wall of the measuring cylinder above the bracket. The length of the scale is 30 cm, and one length unit is 1 cm. The measuring cylinder includes a first measuring cylinder 4 and a second measuring cylinder 5. The scale readings of the first measuring cylinder are set to increase from bottom to top, and the scale readings of the second measuring cylinder are set to increase from top to bottom. A plurality of annular ratchet teeth are evenly arranged along the axial direction on the inner peripheral wall of the measuring cylinder. The annular ratchet teeth are elastic, and one annular ratchet tooth corresponds to one length unit of the scale. The inner peripheral wall of the first measuring cylinder is provided with a plurality of annular ratchet teeth evenly arranged along the axial direction. The annular ratchet teeth are elastic, and one annular ratchet tooth corresponds to one length unit of the scale. A first annular ratchet 6 is provided, the upper tooth surface of the first annular ratchet is perpendicular to the axial direction of the first measuring cylinder, and the lower tooth surface of the first annular ratchet is inclined inward from bottom to top. A second annular ratchet 7 is provided in the second measuring cylinder, the upper tooth surface of the second annular ratchet is inclined inward from top to bottom, and the lower tooth surface of the second annular ratchet is perpendicular to the axial direction of the second measuring cylinder. A first float 8 and a second float 9 are placed inside the first measuring cylinder and the second measuring cylinder respectively. The first and second floats are both conical structures. The first float is inserted into the first annular ratchet at the bottom of the first measuring cylinder. The first float The cone angle of the body is set vertically upward, and the first annular ratchet matches the conical surface of the first float. The second float is inserted into the second annular ratchet at the top of the second measuring tube. The cone angle of the second float is set vertically downward, and the second annular ratchet matches the conical surface of the second float. Both ends of the measuring tube are screwed with a screw cap 10, which is hollow. The screw cap can prevent the float from being washed away from the measuring tube. The hollow screw cap can ensure that the water flow can pass through the screw cap to exert impact force on the float. At the same time, no water will accumulate at both ends of the measuring tube to affect the accuracy of the measurement. A connecting rope 11 is installed between the screw cap at the top of the first measuring tube and the screw cap at the top of the second measuring tube. A connecting rope is also installed between the screw cap at the bottom of the first measuring tube and the screw cap at the bottom of the second measuring tube. The connection rope is used to avoid the loss of a single screw cap. A magnet 12 is fixedly installed at one end of the bracket to facilitate the adsorption of the measuring device on the water gauge of the outer plate of the hull. A connecting rod 13 is installed between the first measuring tube and the second measuring tube to enhance the structural strength of the device.
[0023] The principle and use method of a ship draft depth measuring device: when measuring, the measuring device is adsorbed on the water gauge of the ship's outer plate by a magnet and placed on the water gauge number slightly below the water level. The waves enter the first and second measuring tubes through the first water inlet groove, the gap of the bracket and the second water inlet groove, and generate impact force on the first and second floating bodies. However, due to the existence of the first annular ratchet and the second annular ratchet, the first floating body can only make a unidirectional upward displacement in the first measuring tube, and the first floating body stops moving at the maximum wave crest of the waves as the waves move upward. The second floating body can only make a unidirectional downward displacement in the second measuring tube, and the second floating body stops moving at the maximum wave trough of the waves as the waves move downward. After being placed for a period of time, the measuring device is retrieved for reading. The value of the first measuring tube is subtracted from the value of the second measuring tube. The average value of the difference between the two plus the value of the water gauge number at the placement position is the precise value of the final draft depth. Since the draft gauge of the ship's outer plate is large and the smallest unit length is 2 decimeters, it is difficult to measure the value accurately to the centimeter. The use of this measuring device can eliminate the interference of wave crests and troughs while measuring the draft depth accurately to the centimeter, which not only reduces the measurement difficulty but also improves the measurement accuracy.
[0024] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. A ship draft depth measuring device, characterized in that: The invention comprises a horizontally arranged bracket (1), on which a group of transparent measuring cylinders are fixedly connected, wherein the measuring cylinders are connected to the bracket, wherein a first strip-shaped water inlet groove (2) is provided on the front side of the measuring cylinder along the axial direction, a notch corresponding to the first water inlet groove is provided on the bracket, and a second strip-shaped water inlet groove is provided on the back side of the measuring cylinder along the axial direction, and a scale (3) is provided on the outer peripheral wall of the measuring cylinder located above the bracket, wherein the measuring cylinder comprises a first measuring cylinder (4) and a second measuring cylinder (5), wherein the scale readings of the first measuring cylinder are arranged in increasing order from bottom to top, and the scale readings of the second measuring cylinder are arranged in increasing order from top to bottom, wherein a plurality of annular ratchet teeth are evenly arranged on the inner peripheral wall of the measuring cylinder along the axial direction, wherein the annular ratchet teeth are elastic, and each annular ratchet tooth corresponds to a length unit of the scale, and wherein a first annular ratchet tooth (6) is provided in the first measuring cylinder. The upper tooth surface of the first annular ratchet is perpendicular to the axial direction of the first measuring cylinder, and the lower tooth surface of the first annular ratchet is inclined inward from bottom to top. A second annular ratchet (7) is arranged in the second measuring cylinder, and the upper tooth surface of the second annular ratchet is inclined inward from top to bottom, and the lower tooth surface of the second annular ratchet is perpendicular to the axial direction of the second measuring cylinder. A first float (8) and a second float (9) are respectively arranged inside the first measuring cylinder and the second measuring cylinder. The first and second floats are both conical structures. The first float is inserted into the first annular ratchet at the bottom of the first measuring cylinder, and the cone angle of the first float is set vertically upward, and the first annular ratchet matches the cone surface of the first float. The second float is inserted into the second annular ratchet at the top of the second measuring cylinder, and the cone angle of the second float is set vertically downward, and the second annular ratchet matches the cone surface of the second float.
2. A ship draft depth measuring device according to claim 1, characterized in that: Both ends of the measuring tube are screwed with a screw cap (10), and the screw cap is hollowed out.
3. A ship draft depth measuring device according to claim 2, characterized in that: A connecting rope is provided between the rotating cap at the top end of the first measuring tube and the rotating cap at the top end of the second measuring tube, and a connecting rope (11) is also provided between the rotating cap at the bottom end of the first measuring tube and the rotating cap at the bottom end of the second measuring tube.
4. A ship draft depth measuring device according to claim 1, characterized in that: A magnet (12) is fixedly connected to one end of the bracket.
5. A ship draft depth measuring device according to claim 1, characterized in that: The length of the ruler is 30 cm, and one length unit is 1 cm.
6. A ship draft depth measuring device according to claim 1, characterized in that: A connecting rod (13) is provided between the first measuring cylinder and the second measuring cylinder.