CN103557839B - Dip angle measuring instrument - Google Patents

Abstract

The invention discloses an inclination measuring instrument, and aims to provide an inclination measuring instrument which can measure the inclination of a shafting, has high measuring precision and convenient measurement and can carry out dynamic measurement. It includes calibrated scale (1), balancing unit and with calibrated scale (1) rotates pointer (2) of connecting, pointer (2) are in balancing unit keeps directional invariant under the effect, there is straight benchmark limit (3) on calibrated scale (1), scale mark on calibrated scale (1) along with calibrated scale (1) with pointer (2) tie point is the circular arc evenly distributed of the centre of a circle, during the measurement, rotates calibrated scale (1) makes benchmark limit (3) are parallel with the testee, through the inclination of testee alright learn the reading of pointer (2). The invention is mainly applied to the field of ship shafting inclination angle testing.

Description

an inclinometer

technical field

The invention relates to an inclinometer.

Background technique

In the marine field, in order to ensure the installation accuracy of shafting parts such as the stern shaft, it is often necessary to test the inclination angle of the stern shaft. The traditional method of measuring the stern shaft is: align the head end of a 1-meter ruler with a spirit level with one end of the stern shaft, then use a tape measure to measure the vertical distance from the end of the ruler to the axis of the stern shaft, and then use trigonometric functions to calculate the inclination angle of the stern shaft . In this measurement method, it is necessary to go through the process of manual zero leveling and multiple manual tests, and there is a large cumulative error, and it is necessary to test the distance from the end of the meter stick to the axis of the stern shaft when the meter stick is horizontal. It is difficult and the measurement efficiency is low. The characteristics of the original measurement method, such as low precision, low efficiency, complex measurement and incapability of dynamic measurement, can no longer meet the needs of modern production.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide an inclination measuring instrument capable of measuring the inclination angle of the shaft system, high in testing accuracy, convenient in measurement and capable of dynamic measurement.

The technical solution adopted in the present invention is: an inclinometer, which includes a dial, a balance device and a pointer connected to the dial in rotation, the pointer keeps pointing unchanged under the action of the balance device, and the There is a straight reference edge on the dial, and the scale lines on the dial are evenly distributed along the circular arc centered on the connection point between the dial and the pointer. When measuring, rotate the dial so that all The reference side is parallel to the measured object, and the inclination angle of the measured object can be known through the reading of the pointer.

The balance device includes a weight, a bushing, a threading pipe and a sling, the bushing is fixed on the pointer, the threading pipe is fixed on the dial along the reference edge, One end of the sling is connected to the weight, and the other end passes through the casing pipe and the threading pipe in turn. When measuring, make the matching section of the sling and the threading pipe parallel to the measured object. Measure the inclination.

The balance device can also be a hanging weight rotatably connected to the pointer.

The pointer is kept pointing horizontally under the action of the balance device, and when the reference side is horizontal, the pointer is aligned with the zero scale line on the dial.

The dial and the pointer are connected by connecting pins, and the materials of the dial and the pointer are both glass fiber reinforced plastics.

The beneficial effects of the present invention are: since the present invention includes a dial, a balance device, and a pointer rotatably connected to the dial, the pointer remains pointed under the action of the balance device, and there is a flat line on the dial Straight reference side, through this structure, the dial is rotated to make the reference side parallel to the measured object, and the inclination angle of the measured object can be obtained by reading the reading of the pointer. When the dial rotates relative to the pointer as the inclination of the measured object changes, the pointer indicates that the scale changes dynamically, so the present invention has the advantages of high test accuracy, convenient measurement, and dynamic measurement. In addition, because the material of the dial and the pointer is fiberglass, it also has the advantages of low cost and light weight.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present invention;

Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

detailed description

Embodiment one

As shown in Figure 1, it is Embodiment 1 of the present invention, an inclinometer, which includes a dial 1, a balance device and a pointer 2 that is rotatably connected with the dial 1, and the pointer 2 acts on the balance device. keep pointing downward, there is a straight reference side 3 on the dial 1, and the scale line on the dial 1 is along the circular arc centered on the connection point between the dial 1 and the pointer 2 Evenly distributed. The balance device includes a weight 4, a casing pipe 5, a threading pipe 6 and a suspension rope 7, the casing pipe 5 is fixedly arranged on the pointer 2, and the threading pipe 6 is fixed along the reference side 3 Set on the dial 1 , one end of the suspension rope 7 is connected to the weight 4 , and the other end passes through the casing pipe 5 and the threading pipe 6 sequentially. The suspension rope 7 adopted in this embodiment is a steel wire rope.

The bushing 5 is perpendicular to the pointer 2 . When the matching section of the sling 7 and the threading pipe 6 is horizontal, the pointer 2 is aligned with the zero scale line on the dial 1 . The dial 1 and the pointer 2 are connected by a connecting pin 8, and the dial 1 and the pointer 2 are made of fiberglass, which is a lightweight material with a thickness of about 1 to 2 mm.

The dial 1 is fan-shaped with a radius of about 300 mm, and the scale from top to bottom along the fan-shaped arc direction is 0 to 15 degrees, and the minimum scale is 0.1 degrees. During the test, the corresponding parts of the sling 7 and the threading pipe 6 are parallel to the measured axis, and the pointer remains horizontal under the action of the balance device. At this time, reading the scale value aligned with the pointer 2 is The inclination value of the measured axis. When the scale 1 rotates relative to the pointer 2 as the inclination of the measured axis changes, the pointer 2 indicates that the scale changes, thereby realizing dynamic measurement.

Embodiment two

As shown in FIG. 2 , Embodiment 2 of the present invention is mainly different from Embodiment 1 in that: the balance device is a hanging weight 9 rotatably connected with the pointer 2 . Using the reference side 3 as a reference for inclination measurement, the hanging weight 9 can be connected to the pointer 2 through a rope, or directly connected to the pointer 2 through a pin.

The inclination measuring instrument can directly read the inclination angle of the measured shaft, simplifies the process of measuring the inclination angle, and thus has the characteristics of convenient measurement, high precision and dynamic measurement. In addition, the dial 1 and the pointer 2 of the inclinometer are both made of glass fiber reinforced plastic, so it has the characteristics of low cost and easy portability.

Claims (5)

1. An inclinometer, characterized in that it includes a dial (1), a balance device and a pointer (2) that is rotatably connected to the dial (1), and the pointer (2) is on the balance device The direction remains unchanged under the action, there is a straight reference side (3) on the dial (1), and the scale line on the dial (1) is along the line between the dial (1) and the The connection point of the pointer (2) is evenly distributed in the arc of the center of the circle. The balance device includes a weight (4), a bushing (5), a threading pipe (6) and a lifting rope (7). The bushing ( 5) Fixedly installed on the pointer (2), the threading pipe (6) is fixedly installed on the dial (1) along the reference side (3), and one end of the sling (7) is connected to The weight (4) is connected, and the other end passes through the casing pipe (5) and the threading pipe (6) in turn. When measuring, make the sling (7) and the threading pipe (6) The matching section of the scale is parallel to the measured object, and the dial (1) rotates relative to the pointer (2) as the inclination of the measured axis changes, and the pointer (2) indicates that the scale changes to realize dynamic measurement. 2. The inclinometer according to claim 1, characterized in that the pointer (2) is kept pointing horizontally under the action of the balance device. 3 . The inclinometer according to claim 1 , characterized in that: the dial ( 1 ) is connected to the pointer ( 2 ) through a connecting pin ( 8 ). 4 . 4. The inclinometer according to claim 1, characterized in that: when the reference side (3) is horizontal, the pointer (2) is aligned with the zero scale line on the dial (1) . 5. The inclinometer according to claim 1, characterized in that: the materials of the dial (1) and the pointer (2) are both glass fiber reinforced plastics.