A tide slide rule

Abstract

The present invention discloses a tide slide rule, comprising: a main scale plate, with sliding arms provided at both ends of the back surface of the main scale plate, and auxiliary rollers provided on both sides of the back surface; tooth-shaped dividing shafts are sleeved at both ends of the auxiliary rollers, and the tooth-shaped dividing shafts are rotationally connected to the sliding arms; a transmission mechanism connected to the sliding arms is provided in the middle of the side surface of the main scale plate; a tide time sub-scale and a tide height sub-scale; one of the tide time sub-scale and the tide height sub-scale is sleeved on the tooth-shaped dividing shaft at one end of the auxiliary roller, and the other is sleeved on the tooth-shaped dividing shaft at the other end of the auxiliary roller; tide height and tide time comparison graduations are provided on the front surface of the main scale plate, a tide time difference scale is provided at one end of the main scale plate, and a tide height difference scale is provided at the other end; through the ingenious structural combination of the soft steel sub-scale and the tooth-shaped dividing shaft, the present invention ensures the accuracy of the measurement of the instrument, and solves the problems of convenient and rapid calculation of the tide time and the tide from a practical perspective.

Description

Technical Field

[0001] The present invention relates to a tide slide rule, belonging to the field of nautical technology. Background Art

[0002] In nautical science, an isosceles trapezoid chart is provided for calculating the tide height at any time and the high tide time at any tide height. Since the ebb and flow change law of tides approximates a cosine curve, a paper isosceles trapezoid chart is drawn according to the calculation formulas of the tide time and tide height at any time.

[0003] The existing isosceles trapezoid chart has the following disadvantages: 1. The main chart, tide time scale and tide height scale of the trapezoid chart are paper cards and strips, which are easy to be damaged and lost; 2. The scale division intervals of the tide time difference scale and tide height difference scale of the existing trapezoid chart are relatively large, and the calculation accuracy is not high; 3. The main chart, tide time scale and tide height scale are independent. When translating the tide time scale and tide height scale to the corresponding scale divisions on the hypotenuse of the isosceles trapezoid chart, it is difficult to align the scale lines; 4. When operating the tide time scale and tide height scale under the sea wave conditions, the tide time scale and tide height scale are easy to shift, and it is impossible to accurately measure the tide time or tide height. Summary of the Invention

[0004] The purpose of the present invention is to provide a tide slide rule to solve the defect that the existing tide time scale and tide height scale are independent, and it is difficult to align the scale lines when translating the tide time scale and tide height scale to the corresponding scale divisions on the hypotenuse of the isosceles trapezoid chart.

[0005] A tide slide rule includes:

[0006] A main scale plate, with sliding arms provided at both ends of the back surface of the main scale plate, and auxiliary rollers provided on both sides of the back surface; tooth-shaped dividing shafts are sleeved at both ends of the auxiliary rollers, and the tooth-shaped dividing shafts are rotatably connected with the sliding arms;

[0007] A transmission mechanism connected with the sliding arm is provided in the middle of the side surface of the main scale plate;

[0008] A tide time sub-scale; a tide height sub-scale;

[0009] One of the tide time sub-scale and the tide height sub-scale is sleeved on the tooth-shaped dividing shaft at one end of the auxiliary roller, and the other is sleeved on the tooth-shaped dividing shaft at the other end of the auxiliary roller;

[0010] Tide time difference trapezoid scale divisions and tide height difference trapezoid scale divisions with opposite bases are provided on the front surface of the main scale plate, and comparison scale divisions are between the two; a tide time difference scale is provided at one end of the main scale plate, and a tide height difference scale is provided at the other end.

[0011] Further, the transmission mechanism includes an embedded slide rail provided in the middle of the back surface of the main scale plate, a slide shaft is provided in the embedded slide rail, and the sliding arm is connected with the slide shaft.

[0012] Further, the embedded slide rail and the auxiliary roller are of a two-section folding type.

[0013] Further, the main scale plate includes scale plate one and scale plate two; scale plate one and scale plate two are connected by a hinge in the middle; the tide time scale is located on main scale plate one, and the tide height difference scale is located on scale plate two.

[0014] Further, the hinge is provided with two groups of hinge holes, one group is connected to scale plate one, and the other group is connected to scale plate two.

[0015] Further, a toothed structure is provided on the side of the toothed dividing shaft, and the tide time auxiliary scale and the tide height auxiliary scale are provided with teeth adapted to the toothed structure.

[0016] Further, both the tide time auxiliary scale and the tide height auxiliary scale are provided with scale graduations.

[0017] Further, the auxiliary roller includes a roller, and auxiliary roller positioning blocks are provided at both ends of the roller.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: By combining the main scale plate and the auxiliary scale with the tide height and tide time comparison graduations, and connecting them together through the embedded slide rail, auxiliary roller, dividing shaft, sliding arm and sliding shaft, it is beneficial for the rapid measurement of tide time and tide height; the graduations on the main scale surface and the tide height difference and tide time difference graduations are conducive to the rapid alignment of the scales; the addition of a hinge enables the main scale to be folded, which is convenient for storage and use; it is especially suitable for calculating tide time and tide height when frequently entering and leaving the harbor anchorage. For ships with high requirements for tide time and tide height, it is also suitable for using this scale to analyze and calculate tide time and tide height under harsh sea conditions.

[0019] Through the ingenious structural combination of the soft steel auxiliary scale and the toothed dividing shaft, the present invention ensures the accuracy of the instrument's measurement and calculation, and solves the problem of convenient and rapid calculation of tide time and tide height from a practical perspective. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the tide calculation scale of the present invention;

[0021] Figure 2 is a partial structural diagram of the present invention;

[0022] Figure 3 is a schematic diagram of the scale surface of the tide calculation scale of the present invention;

[0023] Figure 4 is a composition diagram of the soft steel auxiliary scale of the present invention;

[0024] Figure 5 is a schematic structural diagram of the soft steel auxiliary scale of the invention;

[0025] Figure 6It is a schematic diagram showing the connection between the soft steel secondary scale and the toothed dividing shaft of the invention.

[0026] In the figure: 0 - tidal height difference scale; 1 - tidal time difference scale; 20 - tidal height difference trapezoidal scale division; 21 - tidal time difference trapezoidal scale division; 3 - front of the main scale board; 4 - toothed dividing shaft; 41 - toothed structure; 5 - embedded slide rail; 6 - slide arm; 7 - slide shaft; 8 - auxiliary roller; 81 - auxiliary roller positioning block; 82 - roller; 9 - hinge; 91 - hinge positioning hole; 11 - scale board one; 12 - scale board two; A - tidal time secondary scale; B - tidal height secondary scale; A1 - scale division; A2 - tooth. Specific embodiments

[0027] To make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0028] As Figures 1-6 shown, a tidal computing ruler is disclosed, including:

[0029] A main scale board, with slide arms 6 provided at both ends of the back of the main scale board, and auxiliary rollers 8 provided on both sides of the back; both ends of the auxiliary roller 8 are sleeved with a toothed dividing shaft 4, and the toothed dividing shaft 4 is rotatably connected to the slide arm 6;

[0030] As Figure 1 shown, the toothed dividing shaft 4 moves inside the slide arm 6, thereby driving the tidal time secondary scale A and the tidal height secondary scale B sleeved thereon to be wound and straightened, facilitating the quick measurement of tidal time and tidal height;

[0031] A transmission mechanism connected to the slide arm 6 is provided in the middle of the back of the main scale board; the transmission mechanism includes an embedded slide rail 5 provided in the middle of the back of the main scale board, a slide shaft 7 is provided inside the embedded slide rail 5, and the slide arm 6 is connected to the slide shaft 7, enabling the toothed dividing shaft 4 to move along the slide arm 6 to the position of the embedded slide rail 5 to cooperate with the slide shaft 7, and enabling the toothed dividing shaft 4 to move along the slide shaft 7;

[0032] The embedded slide rail 5 is fixed on the back of the main scale board and is used for installing the slide shaft 7. The slide shaft 7 is connected to the slide arm 6. The embedded slide rail 5 can be made of wear-resistant metal materials to extend its service life.

[0033] The main scale board is provided with a tidal time secondary scale A and a tidal height secondary scale B; one of the tidal time secondary scale A and the tidal height secondary scale B is sleeved on the toothed dividing shaft 4 at one end of the auxiliary roller 8, and the other is sleeved on the toothed dividing shaft 4 at the other end of the auxiliary roller 8; on the front of the main scale board, there are tidal time difference trapezoidal scale divisions 21 and tidal height difference trapezoidal scale divisions 20 with opposite bases for comparison; one end of the main scale board is provided with a tidal time difference scale 1, and the other end is provided with a tidal height difference scale 0.

[0034] The embedded slide rail 5 and the auxiliary roller 8 are of two-section folding type, and the middle of the main scale plate is connected by a hinge, so that the main scale plate, the embedded slide rail 5 and the auxiliary roller 8 can be folded, which is convenient for storage.

[0035] The main scale plate includes a scale plate one 11 and a scale plate two 12; the scale plate one 11 and the scale plate two 12 are connected by a hinge 9 in the middle. The folding part of the embedded slide rail 5 and the auxiliary roller 8 is consistent with the thickness of the body to avoid friction. The tide time scale 1 is located on the main scale plate one 11, and the tide height scale 0 is located on the scale plate two 12.

[0036] The hinge 9 is provided with two groups of hinge holes 91, one group is connected to the scale plate one 11, and the other group is connected to the scale plate two 12.

[0037] As Figure 1 、 Figure 5 and Figure 6 shown, a toothed structure 41 is provided on the side of the toothed dividing shaft 4, and the tide time sub-scale A and the tide height sub-scale B are provided with teeth A1 adapted to the toothed structure 41; when the toothed dividing shaft 4 rotates, it drives the tide time sub-scale A and the tide height sub-scale B to move along the sliding arm 6.

[0038] As Figure 3 shown, both the tide time sub-scale A and the tide height sub-scale B are provided with scale graduations A2.

[0039] The auxiliary roller 8 includes a roller 82, and auxiliary roller positioning blocks 81 are provided at both ends of the roller 82; the sliding arm 6 and the sliding shaft 7 are connected, and there is a roller 82 inside the sliding arm, which can facilitate sliding in the embedded slide rail 5.

[0040] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A tide slide rule, characterized in that, Comprising: A main scale plate, with sliding arms (6) provided at both ends of the back surface of the main scale plate, and auxiliary rollers (8) provided on both sides of the back surface; both ends of the auxiliary roller (8) are sleeved with toothed dividing shafts (4), and the toothed dividing shafts (4) are rotationally connected to the sliding arms (6); A transmission mechanism connected to the sliding arm (6) is provided in the middle of the side surface of the main scale plate; A tide-time sub-scale (A); A tide-height sub-scale (B); For the tide-time sub-scale (A) and the tide-height sub-scale (B), one is sleeved on the toothed dividing shaft (4) at one end of the auxiliary roller (8), and the other is sleeved on the toothed dividing shaft (4) at the other end of the auxiliary roller (8); On the front surface of the main scale plate, there are tide-time difference trapezoidal scale divisions (21) and tide-height difference trapezoidal scale divisions (20) with opposite bases, and a comparison division is provided between them; one end of the main scale plate is provided with a tide-time difference scale (1), and the other end is provided with a tide-height difference scale (0); The transmission mechanism includes an embedded slide rail (5) provided in the middle of the back surface of the main scale plate, a slide shaft (7) is provided in the embedded slide rail (5), and the sliding arm (6) is connected to the slide shaft (7); The auxiliary roller (8) includes a roller (82), and auxiliary roller positioning blocks (81) are provided at both ends of the roller (82).

2. The tide slide rule according to claim 1, characterized in that, The embedded slide rail (5) and the auxiliary roller (8) are of a two-section folding type.

3. The tide slide rule according to claim 2, characterized in that, The main scale plate includes a scale plate one (11) and a scale plate two (12); the scale plate one (11) and the scale plate two (12) are connected in the middle by a hinge (9); the tide-time difference scale (1) is located on the main scale plate one (11), and the tide-height difference scale (0) is located on the scale plate two (12).

4. The tide slide rule according to claim 3, characterized in that, The hinge (9) is provided with two groups of hinge holes (91), one group is connected to the scale plate one (11), and the other group is connected to the scale plate two (12).

5. The tide slide rule according to claim 1, characterized in that, Toothed structures (41) are provided on the side parts of the toothed dividing shafts, and the tide-time sub-scale (A) and the tide-height sub-scale (B) are provided with teeth (A1) adapted to the toothed structures (41).

6. The tide slide rule according to claim 1, characterized in that, Both the tide-time sub-scale (A) and the tide-height sub-scale (B) are provided with scale divisions (A2).

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