A level measuring device for building interior decoration

Abstract

The present invention discloses a level measuring device for building interior decoration, which relates to the technical field of level measurement, and comprises a ruler body 1, wherein a bubble meter is installed on the top and front of the ruler body 1, and a plurality of circular holes 1 are provided on the front and rear of the ruler body 1, and an adjustment structure is provided inside the ruler body 1, wherein the adjustment structure comprises a ruler body 2, wherein the ruler body 2 is movably provided on the inner side of the ruler body 1, and the front and rear of the ruler body 2 are fixedly connected with a baffle 1, and a plurality of circular holes 2 are provided on the surface of the baffle 1, and a slider 1 is slidably provided on the inner side of the ruler body 2 between two baffles 1. The level measuring device for building interior decoration described in the present invention allows the device to extend its use length of distance measurement according to the usage situation, and at the same time, the verticality between the indoor wall and the ground or between the walls can be measured according to the needs, thereby improving the working adaptability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of level measurement, and in particular to a level measuring device for building interior decoration. Background Art

[0002] During the interior decoration process, it is usually necessary to perform horizontal measurement of the interior buildings to ensure the accuracy of the work during the construction process and avoid inconsistent levels when laying tiles or other operations.

[0003] The Chinese patent with the publication number of "CN212409692U" discloses "a multifunctional level detection device for interior design, comprising a ruler body, a No. 1 groove and a handle, the ruler body is a rectangular structure, the side wall surface of the ruler body is provided with a No. 1 groove, and there are four groups of No. 1 grooves, and the inner cavity of the No. 1 groove is fixedly installed with a handle". Although it can achieve the effect of "increasing the detection method and realizing the plane detection of the interior, thereby improving the efficiency and accuracy of the level detection", it can only simply perform level detection on the indoor wall or ground, and the measured length cannot be adjusted and extended according to the actual situation. At the same time, it cannot measure the verticality of the indoor building, nor can it measure the height difference of the building. In the decoration process, it is essential to draw a circle on tiles or other materials. The device does not have the function of drawing a circle and has limitations in use. Therefore, the present invention proposes a level measurement device for building interior decoration. Summary of the invention

[0004] The main purpose of the present invention is to provide a level measuring device for building interior decoration, which can effectively solve the technical problems raised in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A level measuring device for building interior decoration comprises a ruler body, a bubble meter is installed on the top and front of the ruler body, a plurality of circular holes are opened on the front and rear of the ruler body, and an adjustment structure is arranged inside the ruler body;

[0007] The adjustment structure includes a ruler body 2, which is movably arranged on the inner side of a ruler body 1, and the front and rear parts of the ruler body 2 are fixedly connected with a baffle 1, and the surface of the baffle 1 is provided with a plurality of circular holes 2, and a slider 1 is slidably arranged on the inner side of the ruler body 2 between the two baffles 1, and four circular holes 3 are penetrated at both ends of the slider 1, and a protractor is fixedly arranged at the front and rear parts of one end of the ruler body 1.

[0008] As a preferred technical solution of the present invention, the adjustment structure also includes two groups of adjustment components, which are respectively arranged at both ends of slider one, and the adjustment components include a base plate, which is fixedly connected to slider one, and the front part of the base plate is fixedly connected to baffle two through four guide rods, a one-way screw is rotatably arranged at the front of the base plate, and the one-way screw passes through baffle two and is fixedly connected to an operating handle, a slider two is slidably arranged outside the one-way screw, four limit rods one are fixedly connected to the rear of the slider two, and four pointers one are fixedly connected to the outside of the base plate.

[0009] As a preferred technical solution of the present invention, the slide block 2 is penetrated by a guide rod, a reserved hole is opened in the front of the pointer 1, and the limit rod 1 is adaptively matched with the reserved hole of the pointer 1.

[0010] As a preferred technical solution of the present invention, the slider 1 is adaptively matched with the ruler body 1 and the baffle 1 respectively, and the limit rod 1 is adaptively matched with the circular hole 1, the circular hole 2 and the circular hole 3 respectively.

[0011] As a preferred technical solution of the present invention, a drop distance measuring structure is provided on the top of the ruler body 2, and the drop distance measuring structure includes two protrusions 1, the protrusion 1 is fixedly connected to the ruler body 2, a bidirectional screw rod is rotatably arranged between the two protrusions 1, and two sliders 3 are symmetrically slidably arranged on the outside of the bidirectional screw rod, a protrusion 2 is fixedly installed on the top of the slider 3, two hollow blocks are fixedly arranged on the outside of the protrusion 2, and the protrusion 2 is rotatably connected to a storage rack, the storage rack is threadedly connected with a bolt fastener 1, a baffle 3 is provided on the inner side of the storage rack, square holes are provided at the front and rear parts of the storage rack, and a slider 4 is slidably arranged on the inner side of the storage rack, a movable rod is fixedly connected to the front part of the slider 4, pointers 2 are fixedly connected to both ends of the slider 4, and a spring 1 is provided between the rear part of the slider 4 and one side of the baffle 3.

[0012] As a preferred technical solution of the present invention, a limiting component is arranged on the outside of the storage rack, and the limiting component includes a top plate, and the top plate is fixedly connected to a slider four, and a limiting hole is opened on the top of the slider four, and a gantry frame 1 is fixedly installed on the outside of the storage rack, and a fixed plate 1 is fixedly connected to one side of the gantry frame 1, a limiting rod 2 is movably arranged on the top of the fixed plate 1, and a limiting piece is fixedly connected to the outside of the limiting rod 2, a spring 2 is arranged between the top of the limiting piece and the bottom of the fixed plate 1, and the limiting rod 2 is adaptively matched with the limiting hole of the top plate.

[0013] As a preferred technical solution of the present invention, one end of the movable rod passes through the inner end of the rack, the pointer 2 is adaptively matched with the square hole of the rack, and the bolt fastener 1 is composed of a bolt and a nut.

[0014] As a preferred technical solution of the present invention, the second spring is located on the periphery of the second limiting rod, the hollow block is provided with a threaded hole, and the thread of the first bolt fastener is adaptively matched with the thread of the threaded hole of the hollow block.

[0015] As a preferred technical solution of the present invention, an auxiliary circle drawing structure is arranged on the outside of one of the storage racks, and the auxiliary circle drawing structure includes a gantry frame 2, and the gantry frame 2 is fixedly connected to the storage rack, a clamping block 1 is fixedly arranged on the inner side of the gantry frame 2, and the gantry frame 2 is connected to a threaded rod through a thread, one end of the threaded rod is rotatably connected to the clamping block 2, and the top of the clamping block 2 passes through the inner top surface of the gantry frame 2.

[0016] As a preferred technical solution of the present invention, an auxiliary component is provided at the other end of the ruler body one, and the auxiliary component includes two fixed plates two, the fixed plates two are fixedly connected to the ruler body one, and a movable block is rotatably connected between the two fixed plates two, and a rotating base is rotatably installed at one end of the movable block, and the fixed plate two is provided with four threaded holes, and the movable block is threadedly connected with two bolt fasteners two, and the threads of the bolt fasteners two and the threads of the threaded holes of the fixed plate two are adaptively matched, and the bolt fasteners two are composed of bolts and nuts.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By setting the adjustment structure, it is helpful to extend the distance measuring length of the device according to the usage situation. At the same time, the verticality between the indoor wall and the ground or between the walls can be measured as needed, thereby improving the working adaptability of the device;

[0019] 2. By setting the adjustment component to cooperate with the adjustment structure, it is helpful to adjust the position of the ruler body 2 and the slider 1 and fix them, so that the ruler body 2 can cooperate with the ruler body 1 to extend the length, or the ruler body 2 can be rotated;

[0020] 3. By setting up the drop distance measurement structure in conjunction with the adjustment structure, it is beneficial to measure the drop distance of the indoor floor or wall as needed, and at the same time, the walls or floors with different spacing can be tested as needed;

[0021] 4. By setting the limit assembly to cooperate with the drop distance measurement work, it is helpful to limit the position of the slider 4 so that it is limited when not in use to reduce the use space;

[0022] 5. By setting the auxiliary circle drawing structure and the adjustment structure, it is helpful to adjust the size range of the circle according to needs;

[0023] 6. By setting up auxiliary components and cooperating with the auxiliary circle drawing structure, it is helpful to achieve the work of rotating circle drawing with the rotating base as the center. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of a level measuring device for building interior decoration in an initial state according to the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the ruler body 2 of a level measuring device for indoor decoration of a building according to the present invention;

[0026] Figure 3 It is a schematic diagram of the split three-dimensional structure of the ruler body 2 and the baffle plate 1 of a level measuring device for indoor decoration of a building according to the present invention;

[0027] Figure 4 It is a three-dimensional structural schematic diagram of a slider 1 of a level measuring device for building interior decoration of the present invention;

[0028] Figure 5 It is a schematic diagram of the split three-dimensional structure of a slider 2 and a one-way screw rod of a level measuring device for building interior decoration of the present invention;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of a ruler body 1 of a level measuring device for indoor decoration of a building according to the present invention;

[0030] Figure 7 It is a schematic diagram of the split three-dimensional structure of a slider and a bidirectional screw rod of a level measuring device for building interior decoration of the present invention;

[0031] Figure 8 It is a schematic diagram of the disassembled three-dimensional structure of a storage rack, a bolt fastener 1 and a slider 4 of a level measuring device for indoor decoration of a building according to the present invention;

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of a gantry frame 1 of a level measuring device for building interior decoration of the present invention;

[0033] Fig.10 It is a schematic diagram of the three-dimensional structure of the gantry frame 2 of a level measuring device for building interior decoration of the present invention;

[0034] Fig.11 It is a schematic diagram of the disassembled three-dimensional structure of a fixing plate 2, a bolt fastener 2 and a movable block of a level measuring device for indoor decoration of a building according to the present invention;

[0035] Fig.12 It is a three-dimensional structural schematic diagram of a partial structure of a level measuring device for building interior decoration of the present invention;

[0036] Fig.13 This is a demonstration diagram of a level measuring device for building interior decoration of the present invention when its use length is extended;

[0037] Fig.14 This is a demonstration diagram of a horizontal measuring device for building interior decoration of the present invention when measuring the verticality of a building;

[0038] Fig.15 A level measuring device for indoor decoration of a building according to the present invention Fig.14 Enlarged view of point A in the middle;

[0039] Fig.16 This is a demonstration diagram of a level measuring device for indoor decoration of a building of the present invention when measuring the height difference of a building;

[0040] Fig.17 This is a demonstration diagram of the circle drawing of a level measuring device for building interior decoration of the present invention;

[0041] Fig.18 A level measuring device for indoor decoration of a building according to the present invention Fig.17 Enlarged view of point B in the middle.

[0042] In the figure: 1, ruler body 1; 2, bubble meter; 3, circular hole 1; 4, adjustment structure; 5, drop distance measurement structure; 6, auxiliary circle drawing structure; 7, ruler body 2; 8, baffle 1; 9, circular hole 2; 10, slider 1; 11, circular hole 3; 12, bottom plate; 13, guide rod; 14, baffle 2; 15, one-way screw rod; 16, slider 2; 17, limit rod 1; 18, pointer 1; 19, protractor; 20, bump 1; 21, two-way screw rod; 22, slider 3; 23, bump 2 ; 24. Hollow block; 25. Storage rack; 26. Bolt fastener one; 27. Baffle three; 28. Slider four; 29. ​​Movable rod; 30. Pointer two; 31. Spring one; 32. Top plate; 33. Gantry one; 34. Fixed plate one; 35. Limit rod two; 36. Limit plate; 37. Spring two; 38. Gantry two; 39. Clamp one; 40. Threaded rod; 41. Clamp two; 42. Fixed plate two; 43. Movable block; 44. Rotating base; 45. Bolt fastener two. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0044] like Figure 1-Figure 18 As shown, a level measuring device for building interior decoration comprises a ruler body 1, a bubble meter 2 is installed on the top and front of the ruler body 1, and a plurality of circular holes 3 are opened on the front and rear of the ruler body 1, and an adjustment structure 4 is arranged inside the ruler body 1;

[0045] The adjustment structure 4 includes a ruler body 27, which is movably arranged on the inner side of the ruler body 1, and the front and rear parts of the ruler body 27 are fixedly connected with a baffle 18, and the surface of the baffle 8 is provided with a plurality of circular holes 29, and a slider 10 is slidably arranged between the two baffles 8 on the inner side of the ruler body 27, and four circular holes 3 11 are penetrated at both ends of the slider 10, and a protractor 19 is fixedly arranged at the front and rear parts of one end of the ruler body 1.

[0046] The adjustment structure 4 allows the device to extend the distance measurement according to the use requirements, and can also measure the verticality between indoor walls or between walls and the ground.

[0047] In this embodiment, the adjustment structure 4 also includes two groups of adjustment components, which are respectively arranged at both ends of the slider 10. The adjustment components include a base plate 12, which is fixedly connected to the slider 10. The front part of the base plate 12 is fixedly connected to the baffle 2 14 through four guide rods 13. A one-way screw rod 15 is rotatably arranged at the front of the base plate 12, and the one-way screw rod 15 passes through the baffle 2 14 and is fixedly connected to an operating handle. A slider 2 16 is slidably arranged outside the one-way screw rod 15, and four limit rods 17 are fixedly connected to the rear of the slider 2 16. Four pointers 18 are fixedly connected to the outside of the base plate 12.

[0048] The adjustment component can fix the ruler body 2 7 and the slider 10 on the inner side of the ruler body 1 , and can also adjust the positions of the ruler body 2 7 and the slider 10 .

[0049] In this embodiment, the slide block 16 is penetrated by the guide rod 13 , a reserved hole is opened in the front of the pointer 18 , and the limit rod 1 17 is adaptively matched with the reserved hole of the pointer 18 .

[0050] The guide rod 13 guides the slider 2 16 to prevent it from shifting during movement.

[0051] In this embodiment, the slider 10 is adaptively matched with the ruler body 1 and the baffle 8 respectively, and the limit rod 17 is adaptively matched with the circular hole 1 3 , the circular hole 2 9 and the circular hole 3 11 respectively.

[0052] The limiting rod 17 plays the role of adjusting the position and fixing the slider 10 and the ruler body 2 7.

[0053] In this embodiment, a drop distance measuring structure 5 is provided on the top of the ruler body 27, and the drop distance measuring structure 5 includes two protrusions 1 20, the protrusion 1 20 is fixedly connected to the ruler body 27, a bidirectional screw rod 21 is rotatably arranged between the two protrusions 1 20, two sliders 3 symmetrically slidably arranged on the outside of the bidirectional screw rod 21, a protrusion 23 is fixedly installed on the top of the slider 3 22, two hollow blocks 24 are fixedly arranged on the outside of the protrusion 23, and a rack 25 is rotatably connected to the protrusion 23, and the rack 25 is threadedly connected with a bolt fastener 1 26, a baffle 3 27 is provided on the inner side of the rack 25, square holes are provided at the front and rear parts of the rack 25, and a slider 4 28 is slidably arranged on the inner side of the rack 25, a movable rod 29 is fixedly connected to the front part of the slider 4 28, a pointer 2 30 is fixedly connected to both ends of the slider 4 28, and a spring 1 31 is provided between the rear part of the slider 4 28 and one side of the baffle 3 27.

[0054] The height difference distance measurement structure 5 can perform the height difference distance measurement on the indoor floor or wall, and can perform the height difference distance measurement on the floor or wall with different distances.

[0055] In this embodiment, a limiting assembly is provided on the outside of the storage rack 25, and the limiting assembly includes a top plate 32, which is fixedly connected to a slider four 28, and a limiting hole is provided on the top of the slider four 28, and a gantry frame 33 is fixedly installed on the outside of the storage rack 25, and a fixed plate 34 is fixedly connected to one side of the gantry frame 33, a limiting rod 2 35 is movably provided on the top of the fixed plate 1 34, and a limiting piece 36 is fixedly connected to the outside of the limiting rod 2 35, a spring 2 37 is provided between the top of the limiting piece 36 and the bottom of the fixed plate 1 34, and the limiting rod 2 35 is adaptively matched with the limiting hole of the top plate 32.

[0056] The limiting assembly has a limiting and restraining effect on the movable rod 29 and the slider 28, so that they are limited when not in use.

[0057] In this embodiment, one end of the movable rod 29 passes through the inner end of the rack 25, the pointer 2 30 is adaptively matched with the square hole of the rack 25, and the bolt fastener 1 26 is composed of a bolt and a nut.

[0058] The pointer 2 30 cooperates with the storage rack 25 to read the drop value.

[0059] In this embodiment, the second spring 37 is located on the periphery of the second limiting rod 35 , the hollow block 24 is provided with a threaded hole, and the thread of the first bolt fastener 26 is adaptively matched with the thread of the threaded hole of the hollow block 24 .

[0060] The second spring 37 plays an elastic supporting role on the second limiting rod 35 .

[0061] In this embodiment, an auxiliary circle drawing structure 6 is provided on the outside of one of the storage racks 25, and the auxiliary circle drawing structure 6 includes a gantry frame 38, which is fixedly connected to the storage rack 25, and a clamping block 39 is fixedly provided on the inner side of the gantry frame 38, and the gantry frame 38 is connected to a threaded rod 40 through a thread, and one end of the threaded rod 40 is rotatably connected to a clamping block 41, and the top of the clamping block 41 passes through the inner top surface of the gantry frame 38.

[0062] The auxiliary circle drawing structure 6 can hold the pen to draw a circle.

[0063] In this embodiment, an auxiliary component is provided at the other end of the ruler body 1, and the auxiliary component includes two fixed plates 42, which are fixedly connected to the ruler body 1, and a movable block 43 is rotatably connected between the two fixed plates 42, and a rotating base 44 is rotatably installed at one end of the movable block 43. The fixed plate 42 is provided with four threaded holes, and the movable block 43 is threadedly connected to two bolt fasteners 45, and the threads of the bolt fasteners 45 and the threaded holes of the fixed plate 42 are adaptively matched, and the bolt fasteners 45 are composed of bolts and nuts.

[0064] The auxiliary component cooperates with the auxiliary circle drawing structure 6 to perform a circle drawing operation centered on the rotating base 44 .

[0065] It should be noted that the present invention is a level measuring device for building interior decoration. Before use, the device is placed in a required location. According to different situations required for measurement during interior decoration, excluding the initial state of the device itself, the device can be divided into four usage situations;

[0066] Usage 1: When it is necessary to detect the levelness of the ground or wall, rotate the one-way screw 15 to make the slider 16 move in the opposite direction of the ruler body 1 until the limit rod 17 is pulled out of the reserved hole of the pointer 18. At this time, the ruler body 2 7 and the slider 10 are both free from restrictions. Move the ruler body 2 7 and the slider 10 to one end of the ruler body 1 and stop. Then adjust the limit rod 17 to the corresponding position through the one-way screw 15 so that the slider 10 and the ruler body 2 7 are fixed. At this time, the ruler body 1 and the ruler body 2 7 reach the maximum extension value. Place the device as a whole at the position to be measured on the ground or wall. After observing the bubbles of the bubble meter 2 to determine the overall level of the device, observe whether there is a gap between the bottom of the device and the wall or the ground. If there is a gap, it means that the wall or ground is uneven. If there is no gap, it means that the wall or ground is flat and on a unified horizontal line. In addition, the ruler body 1 and the ruler body 2 7 can be used together to measure the length of indoor buildings.

[0067] Usage situation 2: When it is necessary to measure whether the indoor wall and the ground, or the walls are vertical, based on the usage situation 1, the limit rod 17 is moved away by the one-way screw 15, so that the ruler body 2 7 and the slider 10 are free from restrictions, the ruler body 2 7 is rotated 90 degrees and then stopped, and then the limit rod 17 is moved to the corresponding position by the one-way screw 15 to fix the ruler body 2 7 and the slider 10. At this time, the ruler body 1 and the ruler body 2 7 are vertical, and the side of the ruler body 2 7 with the two-way screw 21 is set in the direction of the bubble meter 2, and the adjusted device is placed against the wall or the wall and the ground for inspection. If the wall is perpendicular to the wall or the wall is perpendicular to the ground, the contact surface of the ruler body 1, the ruler body 2 7 and the corresponding wall or ground fits perfectly. If it is not perpendicular, there will be a gap in the contact surface. When it is not perpendicular, the ruler body 1 is fitted with the wall or the ground, and the limit rod 17 is moved away by the one-way screw 15, so that the ruler body 2 7 and the slider 10 are free of restrictions, and the ruler body 2 7 is rotated toward the corresponding wall or ground until the ruler body 2 7 contacts the corresponding wall or ground. At this time, the corresponding position of the pointer 18 and the corresponding scale on the protractor 19 can be observed to know the inclination angle between the wall and the wall or the wall and the ground;

[0068] Usage situation three: When it is necessary to measure the height difference of a building, in the initial state, the limit rod 17 is moved away by the one-way screw 15, so that the ruler body 27 and the slider 10 are free of restrictions, the ruler body 27 is rotated 90 degrees and then stopped, and then the ruler body 27 and the slider 10 are simultaneously moved toward the bubble meter 2 to the predetermined position and then stopped, and then the ruler body 27 and the slider 10 are fixed by the one-way screw 15, and the bolt fastener 26 is removed, and then the rack 25 is rotated 90 degrees and then stopped, and then the bolt fastener 26 is fixed to the corresponding position of the corresponding rack 25, at this time, the movable rod 29 is parallel to the movable block 43, and one end of the movable rod 29 is flush with one end of the rotating base 44, and then the adjusted device is placed in the site where the height difference detection is required, and the rotating base 4 The bottom of 4 is in contact with the ground or wall. If both the two movable rods 29 and the rotating base 44 can be in contact with the ground or wall, it means that the ground or wall is in a uniform horizontal plane without a drop. If there is a drop, the limit rod 235 is pulled up to make the slider 28 lose its restriction. Under the action of the spring 131, the movable rod 29 slides toward the ground or wall until the movable rod 29 is in contact with the ground or wall. In the process, the slider 28 moves synchronously with the pointer 230, and then the device is adjusted to a horizontal whole through the bubble meter 2. At this time, the scales corresponding to the two pointers 230 can be observed to obtain the drop value. In addition, the distance between the two racks 25 can be adjusted by rotating the bidirectional screw rod 21 according to the different distances, and the drop distance measurement work can be performed on the ground or wall with different spacings.

[0069] Use case 4: When it is necessary to draw a circle, on the basis of the ruler body 1 and the ruler body 2 7 being perpendicular in the use case 2, the limit rod 17 is moved away by the one-way screw 15, so that the ruler body 2 7 and the slider 10 are free from restrictions, and then the ruler body 2 7 is moved downward for a certain distance, and then the limit rod 17 is fixed to the ruler body 2 7 and the slider 10 by the one-way screw 15. At this time, the gantry 2 38 is located below the bottom of the ruler body 1, and then the bolt fastener 2 45 is removed, and the movable block 43 is rotated 90 degrees. , so that it is parallel to the ruler body 27, then place the pen between the clamp block 1 39 and the clamp block 2 41, rotate the threaded rod 40 to make the clamp block 2 41 move toward the clamp block 1 39, and finally fix it. At this time, one end of the pen is matched with the bottom position of the rotating base 44, and then according to the size of the circle to be drawn, move the slider 10 to adjust the position of the ruler body 2 7 on the inner side of the ruler body 1, and fix it through the limit rod 17. After adjustment, with the rotating base 44 as the center, the device can be rotated as a whole to draw a circle.

Claims

1. A level measuring device for building interior decoration, comprising a ruler body (1), a bubble meter (2) is installed on the top and front of the ruler body (1), and a plurality of circular holes (3) are opened on the front and rear of the ruler body (1), characterized in that: An adjustment structure (4) is provided inside the ruler body (1); The adjustment structure (4) comprises a ruler body (7), the ruler body (7) being movably arranged on the inner side of the ruler body (1), the front and rear parts of the ruler body (7) being fixedly connected to a baffle plate (8), and the surface of the baffle plate (8) being provided with a plurality of circular holes (9), a slider (10) being slidably arranged between the two baffle plates (8) on the inner side of the ruler body (7), four circular holes (11) being penetrated at both ends of the slider (10), and a protractor (19) being fixedly arranged on the front and rear parts of one end of the ruler body (1); The adjustment structure (4) further comprises two groups of adjustment components, the two groups of adjustment components being respectively arranged at the two ends of the slider one (10), the adjustment components comprising a base plate (12), the base plate (12) being fixedly connected to the slider one (10), the front portion of the base plate (12) being fixedly connected to the baffle two (14) via four guide rods (13), the front portion of the base plate (12) being rotatably provided with a one-way screw rod (15), the one-way screw rod (15) passing through the baffle two (14) and being fixedly connected to an operating handle, the outside of the one-way screw rod (15) being slidably provided with the slider two (16), the rear portion of the slider two (16) being fixedly connected to four limit rods one (17), and the outside of the base plate (12) being fixedly connected to four pointers one (18); The slide block 2 (16) is penetrated by the guide rod (13), a reserved hole is opened in the front of the pointer 1 (18), and the limit rod 1 (17) is adaptively matched with the reserved hole of the pointer 1 (18); The slider 1 (10) is adaptively matched with the ruler body 1 (1) and the baffle 1 (8), and the limit rod 1 (17) is adaptively matched with the circular hole 1 (3), the circular hole 2 (9) and the circular hole 3 (11); The top of the ruler body 2 (7) is provided with a drop distance measurement structure (5), the drop distance measurement structure (5) comprising two protrusions 1 (20), the protrusion 1 (20) being fixedly connected to the ruler body 2 (7), a bidirectional screw rod (21) being rotatably arranged between the two protrusions 1 (20), two sliders 3 (22) being symmetrically slidably arranged outside the bidirectional screw rod (21), a protrusion 2 (23) being fixedly installed on the top of the slider 3 (22), two hollow blocks (24) being fixedly arranged outside the protrusion 2 (23), and the protrusion 2 (23) being rotatably connected to the ruler body 2 A storage rack (25) is provided, the storage rack (25) is connected to a bolt fastener (26) by a thread, a baffle plate (27) is provided on the inner side of the storage rack (25), a square hole is provided at the front and rear parts of the storage rack (25), and a slider (28) is slidably provided on the inner side of the storage rack (25), a movable rod (29) is fixedly connected to the front part of the slider (28), a pointer (30) is fixedly connected to both ends of the slider (28), and a spring (31) is provided between the rear part of the slider (28) and one side of the baffle plate (27); A limiting assembly is arranged outside the storage rack (25), the limiting assembly comprising a top plate (32), the top plate (32) being fixedly connected to a slider four (28), and a limiting hole is provided on the top of the slider four (28), a gantry frame one (33) is fixedly installed outside the storage rack (25), a fixed plate one (34) is fixedly connected to one side of the gantry frame one (33), a limiting rod two (35) is movably arranged on the top of the fixed plate one (34), and a limiting plate (36) is fixedly connected to the outside of the limiting rod two (35), a spring two (37) is arranged between the top of the limiting plate (36) and the bottom of the fixed plate one (34), and the limiting rod two (35) is adaptively matched with the limiting hole of the top plate (32); One end of the movable rod (29) passes through an inner end of the storage rack (25), the second pointer (30) is adaptively matched with the square hole of the storage rack (25), and the first bolt fastener (26) is composed of a bolt and a nut; The second spring (37) is located on the periphery of the second limiting rod (35), the hollow block (24) is provided with a threaded hole, and the thread of the first bolt fastener (26) is adaptively matched with the thread of the threaded hole of the hollow block (24); An auxiliary circle drawing structure (6) is arranged on the outside of one of the storage racks (25), the auxiliary circle drawing structure (6) comprising a second gantry (38), the second gantry (38) being fixedly connected to the storage rack (25), a first clamping block (39) being fixedly arranged on the inner side of the second gantry (38), and the second gantry (38) being connected to a threaded rod (40) by a thread, one end of the threaded rod (40) being rotatably connected to a second clamping block (41), and the top of the second clamping block (41) passing through the inner top surface of the second gantry (38); The other end of the ruler body 1 (1) is provided with an auxiliary component, the auxiliary component comprising two fixing plates 2 (42), the fixing plates 2 (42) being fixedly connected to the ruler body 1 (1), a movable block (43) being rotatably connected between the two fixing plates 2 (42), one end of the movable block (43) being rotatably mounted with a rotating base (44), the fixing plate 2 (42) being provided with four threaded holes, the movable block (43) being threadably connected with two bolt fasteners 2 (45), the threads of the bolt fasteners 2 (45) being adaptively matched with the threads of the threaded holes of the fixing plate 2 (42), the bolt fasteners 2 (45) being composed of bolts and nuts.

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