Surveying and mapping bevel protractor

Abstract

The utility model relates to the technical field of angle rulers, and provides a surveying and mapping angle ruler which comprises a base ruler, the bottom of the base ruler is fixedly connected with a supporting plate, and an angle adjusting mechanism is arranged in the base ruler. In the angle adjusting process, a user conducts simple positioning through the positioning suction cup, then the adjusting handle is rotated anticlockwise to enable the pressing rod to press the fixed suction cup in the process of moving from left to right, the fixed suction cup is subjected to extrusion force and moves from left to right through the interior of the fixing plate, and the angle is adjusted. When the fixed suction cup is stressed, a reference object is sucked in the moving process of the fixed suction cup, then the base ruler is fixed, when the fixed suction cup is not stressed, resetting is conducted through a reset spring, then fixing of the base ruler is relieved, and the effect of fixing the bevel protractor is achieved through the design; and the change of the measured angle of the reference object caused by the change of the original point in the use process of the base ruler is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of angle rulers, and in particular to a surveying and mapping angle ruler. Background Art

[0002] A protractor is a tool for measuring angles. It usually consists of a ruler or arc-shaped dial with a scale to help users accurately measure and read angles. It is a highly accurate and easy-to-carry measuring tool that can be used for angle measurement tasks in various industries such as engineering, construction, manufacturing, aerospace, etc.

[0003] According to a publicly disclosed surveying and mapping angle ruler (publication number: CN 205664770U): it includes a circular disc, a first ruler, and a second ruler; one end of the first ruler is fixedly connected to the circular disc, and the first ruler extends outward from the 180° to 0° direction of the circular disc; one end of the second ruler is movably connected to the circular disc at the center of the circular disc; the first ruler includes a first reference rod and a first telescopic rod, the first telescopic rod is inserted into the first reference rod and slides with the first reference rod along the axis of the first reference rod; the second ruler includes a second reference rod and a second telescopic rod, the second telescopic rod is inserted into the second reference rod and slides with the second reference rod along the axis of the second reference rod.

[0004] In the above application, due to the mutual cooperation between the first scale and the second scale components, it is difficult to solve the problem of fixing the first scale and the second scale when they are adjusted in the disc, resulting in the origin of the base scale changing during use and causing the angle measured for the reference object to change. Therefore, we proposed a surveying and mapping angle ruler. Utility Model Content

[0005] The utility model provides a surveying and mapping angle ruler, which solves the problems raised in the above documents.

[0006] The technical solution of the utility model is as follows:

[0007] The utility model is a surveying and mapping angle ruler, comprising a base ruler, a support plate being fixedly connected to the bottom of the base ruler, and an angle adjustment mechanism being arranged inside the base ruler;

[0008] The angle adjustment mechanism includes an adjusting handle, the circumferential surface of the adjusting handle passes through the side surface of the support plate and is rotatably connected to the side surface of the support plate, the circumferential surface of the adjusting handle is fixedly connected to a rotating shaft, the circumferential surface of the rotating shaft is fixedly connected to a connecting rod, the end of the connecting rod away from the circumferential surface of the rotating shaft is fixedly connected to a movable caliper, the interior of the movable caliper is slidably connected to the circumferential surface of the base scale, the interior of the movable caliper is rotatably connected to an adjusting shaft, a small gear is fixedly passed through the circumference of the adjusting shaft, and the circumferential surface of the base scale is provided with teeth.

[0009] Furthermore, the side surface of the movable caliper is fixedly connected to a surveying rod, and the circumferential surface of the rotating shaft is fixedly connected to an extension rod. The side surface of the movable caliper is fixedly connected to the surveying rod so that the measured angle can be measured and drawn through the surveying rod, and the circumferential surface of the rotating shaft is fixedly connected to the extension rod so that precise measurement can be performed through the extension rod when the measured angle is greater than °.

[0010] Furthermore, a fixing clamp is fixedly connected to the side of the movable caliper, and a fixing handle is threadedly connected to the side of the fixing clamp. The fixing clamp is fixedly connected to the side of the movable caliper to prevent the movable caliper from falling during movement through the fixing clamp, and the fixing handle is threadedly connected to the side of the fixing clamp to fix the measured angle through the fixing handle to prevent deviation of the measured angle.

[0011] Furthermore, the bottom of the support plate is fixedly connected to an internal angle surveying plate, and the side of the internal angle surveying plate is threadedly connected to a fixing stud. The function of the bottom of the support plate being fixedly connected to the internal angle surveying plate is to fix the internal angle surveying plate to the side of the support plate through the fixing stud when the internal angle needs to be measured.

[0012] Furthermore, the circumferential surface of the pinion meshes with the side surface of the teeth, and the role of the mutual meshing of the circumferential surface of the pinion and the side surface of the teeth is to ensure that the movement of the movable caliper is carried out by the pinion moving on the teeth.

[0013] Furthermore, a fixing mechanism is provided on the side of the support plate, and the fixing mechanism includes a threaded rod, one end of the threaded rod is fixedly connected to one end of the rotating shaft, the circumferential surface of the threaded rod is threadedly connected to a threaded sleeve, the side of the threaded sleeve is fixedly connected to a pressure rod, the circumferential surface of the threaded rod is rotatably connected to the fixing plate, the side of the fixing plate is penetrated by a fixed suction cup, and is slidably connected to the circumferential surface of the fixed suction cup, the side of the fixing plate is fixedly connected to a positioning suction cup, and the role of the fixing mechanism provided on the side of the support plate is to prevent the base scale from deviating during the measurement process, resulting in a change in the origin position.

[0014] Furthermore, a return spring is fixedly connected to the side of the fixed plate, and one end of the return spring away from the side of the fixed plate is fixedly connected to the circumferential surface of the fixed suction cup. The function of the return spring being fixedly connected to the circumferential surface of the fixed suction cup at one end away from the side of the fixed plate is that when the fixed suction cup is not under force, it is reset by the elasticity of the return spring, thereby releasing the fixation of the base ruler.

[0015] Furthermore, one end of the fixed suction cup is elastically connected to the side of the fixed plate through a reset spring, and the circumferential surface of the threaded rod is fixedly passed through the limiting plate. The function of the circumferential surface of the threaded rod being fixedly passed through the limiting plate is to limit the displacement distance of the threaded sleeve through the limiting plate.

[0016] Furthermore, a limiting shaft is fixedly connected to the side of the limiting plate, and the circumferential surface of the limiting shaft penetrates the side of the threaded sleeve and is slidingly connected to the side of the threaded sleeve. The circumferential surface of the limiting shaft penetrates the side of the threaded sleeve and is slidingly connected to the side of the threaded sleeve. The function of the limiting shaft is to prevent the threaded sleeve from rotating during the movement.

[0017] Furthermore, the shape of the pressure rod is set to be annular, the number of the fixed suction cups and the return springs is set to four, two in a group, and symmetrical with each other along the vertical center axis of the fixed plate. The function of setting the shape of the pressure rod to be annular is to ensure that the four fixed suction cups can be pressed by the annular pressure rod, and the number of the fixed suction cups and the return springs is set to four, two in a group, and symmetrical with each other along the vertical center axis of the fixed plate. The function is to fix and stabilize it through multiple fixed suction cups.

[0018] The working principle and beneficial effects of the utility model are as follows:

[0019] 1. The utility model uses the mutual cooperation between the adjustment handle, movable caliper and internal angle surveying board of the angle adjustment mechanism. When the angle ruler is needed, the user places the base ruler in the specified position, and then according to the work requirements, rotates the adjustment handle counterclockwise to make the movable caliper slide counterclockwise on the circumference of the base ruler to the measuring position. Then, by twisting the adjustment shaft to make the pinion mesh with the teeth, the movable caliper is precisely adjusted. After the adjustment is completed, the movable caliper is fixed by the fixing handle. This design achieves the effect of adjusting the measuring angle, so that the base ruler can flexibly handle a variety of internal and external angle measurements.

[0020] 2. The utility model uses the mutual cooperation between the pressure rod, fixed suction cup and positioning suction cup of the fixing mechanism. During the angle adjustment process, the user first performs simple positioning through the positioning suction cup, and then rotates the adjustment handle counterclockwise to press the fixed suction cup during the pressure rod's movement from left to right. The fixed suction cup is subjected to the extrusion force and moves from left to right through the inside of the fixing plate. During the movement of the fixed suction cup, the reference object is sucked, thereby fixing the base ruler. When the fixed suction cup is not under force, it is reset by the reset spring, thereby releasing the base ruler. This design achieves the effect of fixing the angle ruler, and effectively prevents the origin of the base ruler from changing during use, resulting in a change in the measured angle of the reference object. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] Figure 1 This is a schematic diagram of the structure of the three-dimensional appearance of the utility model from the first perspective;

[0023] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle three-dimensional cross-section;

[0024] Figure 3 This is a schematic diagram of the structure of the utility model in a three-dimensional cross-section from a third viewing angle;

[0025] Figure 4 For this utility model Figure 2 A is a schematic diagram of the three-dimensional magnified structure;

[0026] Figure 5 For this utility model Figure 3 Schematic diagram of the three-dimensional magnified structure of B.

[0027] In the figure: 1. Base ruler; 2. Support plate; 3. Angle adjustment mechanism; 31. Adjustment handle; 32. Rotating shaft; 33. Connecting rod; 34. Moving caliper; 35. Adjustment shaft; 36. Pinion; 37. Teeth; 38. Surveying rod; 39. Extension rod; 310. Fixing clamp; 311. Fixing handle; 312. Internal angle surveying plate; 313. Fixing stud; 4. Fixing mechanism; 41. Threaded rod; 42. Threaded sleeve; 43. Press rod; 44. Fixing plate; 45. Fixing suction cup; 46. Positioning suction cup; 47. Return spring; 48. Limiting plate; 49. Limiting shaft. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figures 1 to 5 As shown, this embodiment provides a surveying and mapping angle ruler, comprising a base ruler 1, a support plate 2 is fixedly connected to the bottom of the base ruler 1, and an angle adjustment mechanism 3 is provided inside the base ruler 1;

[0031] The angle adjustment mechanism 3 includes an adjusting handle 31. The circumferential surface of the adjusting handle 31 passes through the side surface of the support plate 2 and is rotatably connected to the side surface of the support plate 2. The circumferential surface of the adjusting handle 31 is fixedly connected to a rotating shaft 32. The circumferential surface of the rotating shaft 32 is fixedly connected to a connecting rod 33. The end of the connecting rod 33 away from the circumferential surface of the rotating shaft 32 is fixedly connected to a movable caliper 34. The interior of the movable caliper 34 is slidably connected to the circumferential surface of the base scale 1. The interior of the movable caliper 34 is rotatably connected to an adjusting shaft 35. A pinion 36 is fixedly passed through the circumference of the adjusting shaft 35, and teeth 37 are provided on the circumferential surface of the base scale 1.

[0032] The side of the movable caliper 34 is fixedly connected to a surveying rod 38, and the circumferential surface of the rotating shaft 32 is fixedly connected to an extension rod 39. The side of the movable caliper 34 is fixedly connected to the surveying rod 38 so that the measured angle can be measured and drawn by the surveying rod 38, and the circumferential surface of the rotating shaft 32 is fixedly connected to the extension rod 39 so that accurate measurement can be performed by the extension rod 39 when the measuring angle is greater than 180°.

[0033] The side of the movable caliper 34 is fixedly connected to a fixing clamp 310, and the side of the fixing clamp 310 is threadedly connected to a fixing handle 311. The side of the movable caliper 34 is fixedly connected to the fixing clamp 310 to prevent the movable caliper 34 from falling during movement. The side of the fixing clamp 310 is threadedly connected to the fixing handle 311 to fix the measured angle through the fixing handle 311 to prevent deviation of the measured angle.

[0034] The bottom of the support plate 2 is fixedly connected to an inner angle mapping plate 312, and the side of the inner angle mapping plate 312 is threadedly connected to a fixing stud 313. The function of the bottom of the support plate 2 being fixedly connected to the inner angle mapping plate 312 is to fix the inner angle mapping plate 312 to the side of the support plate 2 through the fixing stud 313 when the inner angle needs to be measured.

[0035] The circumferential surface of the pinion 36 meshes with the side surfaces of the teeth 37 . The meshing function of the circumferential surface of the pinion 36 and the side surfaces of the teeth 37 ensures that the moving caliper 34 moves on the teeth 37 through the pinion 36 .

[0036] In this embodiment, when the angle ruler needs to be used, the user places the base ruler 1 at the specified position, and then rotates the adjustment handle 31 counterclockwise according to work requirements. The counterclockwise rotation of the adjustment handle 31 drives the rotating shaft 32 to rotate counterclockwise, and the counterclockwise rotation of the rotating shaft 32 drives the movable caliper 34 to slide counterclockwise on the circumferential surface of the base ruler 1 through the connecting rod 33. When the movable caliper 34 moves to the measuring position, the adjusting shaft 35 is then screwed to engage the pinion 36 with the teeth 37 to move and precisely adjust the movable caliper 34. After the adjustment is completed, the movable caliper 34 is fixed by the fixing handle 311. When it is necessary to measure the inner angle of the object, the user fixes the inner angle surveying plate 312 to the side of the support plate 2 through the fixing stud 313, and then adjusts the movable caliper 34.

[0037] Example 2

[0038] like Figures 1 to 5As shown, based on the same concept as the above-mentioned embodiment 1, a second embodiment is also proposed, a fixing mechanism 4 is provided on the side of the support plate 2, the fixing mechanism 4 includes a threaded rod 41, one end of the threaded rod 41 is fixedly connected to one end of the rotating shaft 32, the circumferential surface of the threaded rod 41 is threadedly connected to a threaded sleeve 42, the side of the threaded sleeve 42 is fixedly connected to a pressure rod 43, the circumferential surface of the threaded rod 41 is rotatably connected to a fixing plate 44, the side of the fixing plate 44 is penetrated by a fixing suction cup 45, and is slidingly connected to the circumferential surface of the fixing suction cup 45, the side of the fixing plate 44 is fixedly connected to a positioning suction cup 46, the role of the fixing mechanism 4 provided on the side of the support plate 2 is to prevent the base scale 1 from offsetting during the measurement process, resulting in a change in the origin position.

[0039] A return spring 47 is fixedly connected to the side of the fixed plate 44, and one end of the return spring 47 away from the side of the fixed plate 44 is fixedly connected to the circumferential surface of the fixed suction cup 45. The function of the return spring 47 being fixedly connected to the circumferential surface of the fixed suction cup 45 at one end away from the side of the fixed plate 44 is that when the fixed suction cup 45 is not under force, it is reset by the elasticity of the return spring 47, thereby releasing the fixation of the base ruler 1.

[0040] One end of the fixed suction cup 45 is elastically connected to the side of the fixed plate 44 through a return spring 47, and the circumferential surface of the threaded rod 41 is fixedly passed through the limiting plate 48. The function of the circumferential surface of the threaded rod 41 being fixedly passed through the limiting plate 48 is to limit the displacement distance of the threaded sleeve 42 through the limiting plate 48.

[0041] A limiting shaft 49 is fixedly connected to the side of the limiting plate 48. The circumferential surface of the limiting shaft 49 penetrates the side of the threaded sleeve 42 and is slidingly connected to the side of the threaded sleeve 42. The circumferential surface of the limiting shaft 49 penetrates the side of the threaded sleeve 42 and is slidingly connected to the side of the threaded sleeve 42. The function of the limiting shaft 49 is to prevent the threaded sleeve 42 from rotating during the movement.

[0042] The shape of the pressure rod 43 is set to be annular, the number of the fixed suction cups 45 and the return springs 47 is set to four, two in a group, and symmetrical with each other along the vertical center axis of the fixed plate 44. The function of setting the shape of the pressure rod 43 to be annular is to ensure that the four fixed suction cups 45 can be pressed by the annular pressure rod 43, and the number of the fixed suction cups 45 and the return springs 47 is set to four, two in a group, and symmetrical with each other along the vertical center axis of the fixed plate 44 is to ensure that the four fixed suction cups 45 can be fixed and stabilized by multiple fixed suction cups 45.

[0043] In this embodiment, during the angle adjustment process, in order to prevent the origin of the base ruler 1 from changing during use, which will cause the angle of the reference object to change, the user first performs a simple positioning through the positioning suction cup 46, and then rotates the adjustment handle 31 counterclockwise. The adjustment handle 31 rotates counterclockwise to drive the rotating shaft 32 to rotate counterclockwise. The rotating shaft 32 rotates counterclockwise to drive the threaded rod 41 to rotate counterclockwise, and the threaded sleeve 42 threadedly connected to the circumferential surface of the threaded rod 41 moves left to right. The threaded sleeve 42 moves left to right and drives the pressure rod 43 to move left to right. During the process of the pressure rod 43 moving left to right, the fixed suction cup 45 is pressed. The fixed suction cup 45 is subjected to the extrusion force and moves left to right through the inside of the fixing plate 44. During the movement of the fixed suction cup 45, the reference object is sucked, thereby fixing the base ruler 1. When the fixed suction cup 45 is no longer under force, it is reset by the reset spring 47, thereby releasing the fixation of the base ruler 1.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A surveying and mapping angle ruler, characterized in that: It comprises a base ruler (1), the bottom of the base ruler (1) is fixedly connected to a support plate (2), and an angle adjustment mechanism (3) is provided inside the base ruler (1); The angle adjustment mechanism (3) comprises an adjustment handle (31), the circumferential surface of the adjustment handle (31) passes through the side surface of the support plate (2) and is rotatably connected to the side surface of the support plate (2), the circumferential surface of the adjustment handle (31) is fixedly connected to a rotating shaft (32), the circumferential surface of the rotating shaft (32) is fixedly connected to a connecting rod (33), one end of the connecting rod (33) away from the circumferential surface of the rotating shaft (32) is fixedly connected to a movable caliper (34), the interior of the movable caliper (34) is slidably connected to the circumferential surface of the base scale (1), the interior of the movable caliper (34) is rotatably connected to an adjustment shaft (35), the circumference of the adjustment shaft (35) is fixedly penetrated by a pinion (36), and the circumferential surface of the base scale (1) is provided with teeth (37).

2. A surveying and mapping angle ruler according to claim 1, characterized in that: A surveying rod (38) is fixedly connected to the side surface of the movable caliper (34), and an expansion rod (39) is fixedly connected to the circumferential surface of the rotating shaft (32).

3. A surveying and mapping angle ruler according to claim 2, characterized in that: A fixing clamp (310) is fixedly connected to the side of the movable caliper (34), and a fixing handle (311) is threadedly connected to the side of the fixing clamp (310).

4. A surveying and mapping angle ruler according to claim 3, characterized in that: The bottom of the support plate (2) is fixedly connected to an inner angle surveying plate (312), and the side of the inner angle surveying plate (312) is threadedly connected to a fixing stud (313).

5. A surveying and mapping angle ruler according to claim 4, characterized in that: The circumferential surface of the pinion (36) and the side surfaces of the teeth (37) mesh with each other.

6. A surveying and mapping angle ruler according to claim 5, characterized in that: A fixing mechanism (4) is provided on the side of the support plate (2), and the fixing mechanism (4) includes a threaded rod (41), one end of the threaded rod (41) is fixedly connected to one end of the rotating shaft (32), the circumferential surface of the threaded rod (41) is threadedly connected to a threaded sleeve (42), the side of the threaded sleeve (42) is fixedly connected to a pressure rod (43), the circumferential surface of the threaded rod (41) is rotatably connected to a fixing plate (44), a fixing suction cup (45) is passed through the side of the fixing plate (44), and is slidably connected to the circumferential surface of the fixing suction cup (45), and the side of the fixing plate (44) is fixedly connected to a positioning suction cup (46).

7. A surveying and mapping angle ruler according to claim 6, characterized in that: A return spring (47) is fixedly connected to the side surface of the fixed plate (44), and one end of the return spring (47) away from the side surface of the fixed plate (44) is fixedly connected to the circumferential surface of the fixed suction cup (45).

8. The surveying and mapping angle ruler according to claim 7, characterized in that: One end of the fixed suction cup (45) is elastically connected to the side of the fixed plate (44) via a return spring (47), and the circumferential surface of the threaded rod (41) is fixedly passed through the limiting plate (48).

9. The surveying and mapping angle ruler according to claim 8, characterized in that: A limiting shaft (49) is fixedly connected to the side of the limiting plate (48), and a circumferential surface of the limiting shaft (49) penetrates the side of the threaded sleeve (42) and is slidably connected to the side of the threaded sleeve (42).

10. The surveying and mapping angle ruler according to claim 9, characterized in that: The shape of the pressure rod (43) is set to be annular, and the number of the fixed suction cup (45) and the return spring (47) is set to four, two by two, and symmetrical to each other along the vertical center axis of the fixed plate (44).

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