Optical lever mirror with readable mirror angle for steel wire Young's measuring instrument

Abstract

The utility model discloses an optical lever mirror with a readable mirror angle for a steel wire Young's measuring instrument, which relates to the technical field of optical lever mirrors and comprises an arc-shaped support frame, a mirror body is erected in the arc-shaped support frame, the arc-shaped support frame is provided with a base, and two ends of the base are respectively provided with a first conical support leg, a second conical support leg and a third conical support leg. A first threaded hole and a second threaded hole are formed in the two ends of the arc-shaped supporting frame respectively, a first rotating screw rod is arranged in the first threaded hole, a second rotating screw rod is arranged in the second threaded hole, and the first rotating screw rod and the second rotating screw rod are both connected with the mirror body; one end of the second rotating screw rod is provided with an angle indicating dial, the angle indicating dial is provided with angle scale marks, and the end, located on the angle indicating dial, of the arc-shaped supporting frame is provided with a datum line, so that the rotating angle can be directly read through the datum line when the mirror body is rotated through the arrangement of the angle indicating dial and the scale marks; and the efficiency of adjusting the angle of the lens body and the accuracy of the experiment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lever mirrors, in particular to an optical lever mirror with readable mirror angle for a wire Young's modulus measuring instrument. Background Art

[0002] In measurements where the difference in length or position is very small, the optical lever is a simple and effective method. It is a plane mirror mounted on three supports. F1 and F2 are the front supports, and R is the rear support. The plane where the deflection surface of the mirror lies is parallel to the line connecting F1 and F2. R is mounted on the object whose position is to be measured and changes. F1 and F2 are fixed to the base, enabling the plane mirror to rotate around the F1F2 axis. L is a telescope, and S is a scale (the characters on it are inverted). When the light is reflected by M, the scale on the scale S can be observed through the telescope.

[0003] Young's modulus of elasticity, also known as elastic modulus or Young's modulus, is one of the most important parameters in mechanical analysis and engineering design, and is a parameter used to describe the degree of deformation of an elastic body under the action of an external force.

[0004] During the measurement of Young's modulus, it is necessary to adjust the angle of the mirror. For the mirror of the current-structured Young's modulus measuring instrument, when adjusting the angle, it entirely depends on the user's feeling or experience to adjust the angle of the mirror. However, there is a drawback in this way during the adjustment process: the adjustment entirely depends on feeling and experience, and the user often changes the angle of the mirror without proper control during the adjustment process, without a reference for adjustment. In this way, on the one hand, it will take a relatively long time during the adjustment process, thereby affecting the efficiency of the experiment. On the other hand, the angle adjustment accuracy is poor, further reducing the accuracy of the experiment.

[0005] Therefore, there is an urgent need for an optical lever mirror with readable mirror angle for a wire Young's modulus measuring instrument, which can directly read the angle value when adjusting the mirror angle, shorten the adjustment time, and improve the experimental accuracy. Content of the Utility Model

[0006] Aiming at the above technical problems, the utility model provides an optical lever mirror with readable mirror angle for a wire Young's modulus measuring instrument, which is used to solve the problem that for the mirror of the current-structured Young's modulus measuring instrument, when adjusting the angle, it entirely depends on the user's feeling or experience to adjust the angle of the mirror, and the user changes the angle of the mirror without proper control during the adjustment process, without a reference for adjustment, resulting in a relatively long time spent in the adjustment process, affecting the efficiency of the experiment and the angle adjustment accuracy.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions:

[0008] A light lever mirror for reading the angle of a mirror in a wire Young's modulus measuring instrument, comprising an arc-shaped support frame, a mirror body is installed inside the arc-shaped support frame, a base is provided on the arc-shaped support frame, a first conical support foot and a second conical support foot are respectively provided at both ends of the base, a support leg is provided at the center of the base and perpendicular to the connection line of the first conical support foot and the second conical support foot, a third conical support foot is provided at one end of the support leg, first threaded holes and second threaded holes are respectively opened at both ends of the arc-shaped support frame, a first rotating screw is provided in the first threaded hole, a second rotating screw is provided in the second threaded hole, and the first rotating screw and the second rotating screw are both connected to the mirror body;

[0009] An angle indicating disk is provided at one end of the second rotating screw, angle scale lines are provided on the angle indicating disk, a reference line is provided at one end of the arc-shaped support frame where the angle indicating disk is located, and when the mirror body rotates, the angle indicating disk rotates with it.

[0010] Further, a circular hole is opened at the concentric position of the mirror body corresponding to the first threaded hole, and a polygonal hole is opened at the concentric position of the mirror body corresponding to the second threaded hole;

[0011] A cylindrical portion is provided at one end of the first rotating screw corresponding to the circular hole, the cylindrical portion is rotationally matched with the circular hole, a polygonal portion is provided at one end of the second rotating screw corresponding to the polygonal hole, and the polygonal portion is inserted and matched with the polygonal hole.

[0012] Further, a guide seat is provided at the position of the support leg on the base, a guide hole is penetrated through the guide seat, and the support leg moves along the guide hole.

[0013] Further, a locking bolt is provided at the top of the guide hole of the guide seat.

[0014] In summary, the beneficial technical effects of the present utility model are as follows:

[0015] (1) By using the rotation of the mirror body to drive the angle indicating disk to rotate through the second rotating screw, and at the same time, the current angle value on the angle indicating disk can be indicated through the reference line, so as to facilitate the user to directly read and understand the current angle of the mirror body, thereby improving the efficiency of mirror body angle adjustment and the accuracy of the experiment.

[0016] (2) The cylindrical portion can provide the function of a rotating shaft for the rotation of the mirror body, and at the same time, the polygonal portion can transmit the acting force to the angle indicating disk when the mirror body rotates to realize the reading of the angle. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of another angle of the present utility model;

[0019] Figure 3 It is a schematic diagram of the third angle of the present utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the lens body;

[0021] Figure 5 It is Figure 4 a schematic diagram of another angle of;

[0022] Figure 6 It is a schematic diagram of the structure of the first rotating screw;

[0023] Figure 7 It is a schematic diagram of the structure of the second rotating screw.

[0024] Reference numerals: 1, arc-shaped support frame; 2, lens body; 3, base; 4, first conical foot; 5, second conical foot; 6, leg; 7, third conical foot; 8, first rotating screw; 9, second rotating screw; 10, cylindrical part; 11, polygonal part; 12, round hole; 13, polygonal hole; 14, angle indicator disk; 15, angle scale line; 16, reference line; 17, guide seat; 18, locking bolt. Detailed implementation manners

[0025] The present utility model will be clearly and completely described below in conjunction with the embodiments.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0027] In the description of the embodiments, unless otherwise clearly specified and limited, terms such as "set", "connected" 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 directly connected or connected through an intermediate medium, and it can also be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] See the attached Figures 1 - 7, shown is a light lever mirror for reading the angle of the mirror of a wire Young's modulus measuring instrument, including an arc-shaped support frame 1. A base 3 is provided at the bottom of the arc-shaped support frame 1. A first conical support foot 4 and a second conical support foot 5 are respectively provided at both ends of the base 3. A guide seat 17 is provided in the middle of the base 3. A guide hole is provided through the guide seat 17 along the thickness direction of the base 3. An L-shaped leg 6 is inserted into the guide hole. A third conical support foot 7 is provided at one end of the leg 6. The first conical support foot 4, the second conical support foot 5 and the third conical support foot 7 are located on a virtual isosceles triangle. At the same time, a locking bolt 18 is provided at the top of the guide seat 17. When in use, the position of the leg 6 in the guide seat 17 is fixed by the locking bolt 18;

[0029] First threaded holes and second threaded holes are respectively opened at the left and right ends of the arc-shaped support frame 1. At the same time, a first rotating screw 8 and a second rotating screw 9 are respectively provided on the arc-shaped support frame 1 through the first threaded hole and the second threaded hole. A cylindrical portion 10 is provided at the end of the first rotating screw 8, and a polygonal portion 11 is provided at the end of the second rotating screw 9. At the same time, a mirror body 2 is provided in the arc-shaped support frame 1. A circular hole 12 is opened at the position of the mirror body 2 corresponding to the cylindrical portion 10, and a polygonal hole 13 is opened at the position of the mirror body 2 corresponding to the polygonal portion 11. When installing the mirror body 2, the circular hole 12 is inserted and rotatably matched with the cylindrical portion 10, and the polygonal hole 13 is inserted and matched with the polygonal portion 11. When the mirror body 2 rotates to adjust the angle, it rotates around the cylindrical portion 10. At the same time, the mirror body 2 drives the second rotating screw 9 to rotate through rotation. An angle indicating disk 14 is provided at one end of the second rotating screw 9. Angle scale lines 15 are provided on the angle indicating disk 14. At the same time, a reference line 16 is provided on the arc-shaped support frame 1 at the position of the angle indicating disk 14. When adjusting the angle of the mirror body 2, the reference angle value of the reference line 16 can be referred to for quick adjustment, and the current angle value can be accurately read when the angle is adjusted, thereby shortening the time for adjusting the angle and improving the accuracy of the experiment.

[0030] During the experiment, first loosen the first rotating screw 8 and the second rotating screw 9 to make the mirror body 2 in a free state. Then rotate the mirror body 2 by referring to the indicated angle of the reference line 16 on the angle indicating disk 14. When the angle of the mirror body 2 reaches the experimental requirement, quickly lock the first rotating screw 8 and the second rotating screw 9 inward. At this time, the current angle of the mirror body 2 can be maintained, and the current indicated angle can also be visually read through the reference line 16.

[0031] The above is only the preferred specific embodiment of the present invention, and does not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An optical lever mirror with readable mirror angle for a wire Young's modulus measuring instrument, comprising an arc-shaped support frame (1), a mirror body (2) is installed inside the arc-shaped support frame (1), the arc-shaped support frame (1) is provided with a base (3), both ends of the base (3) are respectively provided with a first conical support foot (4) and a second conical support foot (5), the center of the base (3) and perpendicular to the connection line of the first conical support foot (4) and the second conical support foot (5) is provided with a support leg (6), one end of the support leg (6) is provided with a third conical support foot (7), and the characteristics are as follows: Both ends of the arc-shaped support frame (1) are respectively provided with a first threaded hole and a second threaded hole. A first rotating screw rod (8) is arranged in the first threaded hole, and a second rotating screw rod (9) is arranged in the second threaded hole. The first rotating screw rod (8) and the second rotating screw rod (9) are both connected to the mirror body (2). One end of the second rotating screw rod (9) is provided with an angle indicating disc (14). Angle scale lines (15) are provided on the angle indicating disc (14). A reference line (16) is provided at one end of the arc-shaped support frame (1) where the angle indicating disc (14) is located. When the mirror body (2) rotates, the angle indicating disc (14) rotates with it.

2. The optical lever mirror with readable mirror angle for a wire Young's modulus measuring instrument according to claim 1, characterized in that: A circular hole (12) is provided at the concentric position of the mirror body (2) corresponding to the first threaded hole, and a polygonal hole (13) is provided at the concentric position of the mirror body (2) corresponding to the second threaded hole. One end of the first rotating screw rod (8) corresponding to the circular hole (12) is provided with a cylindrical portion (10). The cylindrical portion (10) is in rotational fit with the circular hole (12). One end of the second rotating screw rod (9) corresponding to the polygonal hole (13) is provided with a polygonal portion (11). The polygonal portion (11) is in plug-in fit with the polygonal hole (13).

3. The optical lever mirror with readable mirror angle for a wire Young's modulus measuring instrument according to claim 1, characterized in that: A guide seat (17) is provided at the position of the leg (6) on the base (3). A guide hole is penetratingly provided on the guide seat (17). The leg (6) moves along the guide hole.

4. A optical lever mirror for a wire Young's modulus measuring instrument with readable mirror angle according to claim 3, characterized in that: A locking bolt (18) is provided at the top of the guide hole on the guide seat (17).

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