Pipe system on-site lofting drawing ruler

Abstract

The invention relates to the technical field of ship measurement tools, in particular to a pipe system on-site lofting drawing ruler which comprises a measurement operation part, a measurement supporting part and a measurement limiting part, the measurement supporting part is movably connected with the measurement limiting part, and a work preparation cavity used for containing the measurement operation part is formed in one side of the measurement limiting part. The measurement limiting piece is movably connected in the work preparation cavity and comprises a main measurement work block, a first measurement auxiliary block, a second measurement auxiliary block and a third measurement auxiliary block; the first measurement auxiliary block, the second measurement auxiliary block and the third measurement auxiliary block are arranged at intervals and are all attached to the outer edge of the main measurement working block, and the main measurement working block, the first measurement auxiliary block, the second measurement auxiliary block and the third measurement auxiliary block work independently. The problem that in the prior art, the actual installation error is large due to bare-handed drawing is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship measurement tools, and more particularly, to a pipe system on-site lofting drawing ruler. Background Art

[0002] A Chinese patent with the patent name of a line lofting scale and the application number of 202020819858.1 has been publicly disclosed. The structure of this patent includes a telescopic main pipe that extends horizontally and has an adjustable length. An armrest is connected above the telescopic main pipe, and a steering pulley is connected below. A ash spreading funnel and a leaning structure are respectively connected to the left and right ends of the telescopic main pipe. The ash spreading funnel is placed vertically, and its bottom end is slightly higher than the steering pulley. The leaning structure includes a leaning pipe that is in the same horizontal plane as the telescopic main pipe and perpendicular to it, and at least three wheels of the same size installed on the outside of the leaning pipe. The leaning structure also includes a bracket connecting the leaning pipe and the telescopic main pipe. A steering pulley is also connected below the bracket. The bracket, the telescopic main pipe, and the leaning pipe form a right triangle. The armrest includes a gripping rod parallel to the telescopic main pipe and at least two vertical connecting rods perpendicularly connecting the gripping rod and the telescopic main pipe. The telescopic main pipe is divided into three sections and is connected by bolts respectively. The maximum extension length range of the telescopic main pipe is 25m, the diameter range of the steering pulley is 35cm, and the diameter range of the wheels is 24cm. The length range of the gripping rod is 0.83m, and the length range of the vertical connecting rods is 11.5m. Although this tool belongs to a ruler and can determine lofting, it cannot be applied in the ship field. When lofting on the ship repair site, construction workers need to draw pictures of the lofting pipe system, and then go to the indoor field for blanking, pipe bending, and manufacturing. Construction workers draw pictures by hand on the site, and the shapes and sizes are uneven and chaotic. Indoor construction workers sometimes cannot clearly see the shape and size of the graphics. Especially when drawing a position with an inclined slope, it is very likely to cause the wrong pipe bending and reversed direction during pipe bending manufacturing, affecting the installation on the ship. Summary of the Invention

[0003] The purpose of the present application is to provide a pipe system on-site lofting drawing ruler, which solves the problem of large actual installation errors caused by freehand drawing in the prior art.

[0004] Technical Solution of the Present Application: The present invention provides a pipe system on-site lofting drawing ruler, which includes a measurement operating member, a measurement supporting member, and a measurement limiting member. The measurement supporting member is movably connected to the measurement limiting member. One side of the measurement limiting member is provided with a working preparation cavity for placing the measurement operating member, and the measurement operating member is movably connected within the working preparation cavity. Among them, the measurement limiting member includes a main measurement working block, a first measurement auxiliary block, a second measurement auxiliary block, and a third measurement auxiliary block. The first measurement auxiliary block, the second measurement auxiliary block, and the third measurement auxiliary block are arranged at intervals and are all in contact with the outer edge of the main measurement working block. The main measurement working block, the first measurement auxiliary block, the second measurement auxiliary block, and the third measurement auxiliary block work independently.

[0005] In some embodiments, the working preparation cavity is square. After the edges of the main measurement working block, the first measurement auxiliary block, the second measurement auxiliary block, and the third measurement auxiliary block are fitted, a square block structure is formed. The surfaces of the first measurement auxiliary block, the second measurement auxiliary block, and the third measurement auxiliary block on the side away from the main measurement working block are all slidably connected to the inner side wall of the working preparation cavity.

[0006] In some embodiments, a right trapezoidal measurement groove is formed at the top of the main measurement working block, and the right trapezoidal measurement groove cooperates with the first measurement auxiliary block; a special-shaped measurement groove is formed at one end of the main measurement working block away from the right trapezoidal measurement groove, and the special-shaped measurement groove cooperates with the second measurement auxiliary block; a rectangular measurement groove is formed on one side of the main measurement working block, and the rectangular measurement groove cooperates with the third measurement auxiliary block.

[0007] In some embodiments, the second measurement auxiliary block includes a first working strip, a second working strip, and a third working strip. One end of the first working strip is perpendicularly connected to one end of the second working strip. The middle of the second working strip is connected to the third working strip. The inner edges of the first working strip and the third working strip are in arc transition.

[0008] In some embodiments, one end of the first working strip away from the second working strip is an acute angle, one end of the second working strip away from the first working strip is an acute angle. The width of the first working strip is the same as the width of the second working strip. The width of the third working strip is smaller than the width of the second working strip. The length of the first working strip is greater than the length of the second working strip. The length of the third working strip is smaller than the length of the second working strip.

[0009] In some embodiments, the first measurement auxiliary block is electrically connected to a first driver for controlling the operation of the controller; the second measurement auxiliary block is electrically connected to a second driver for controlling the operation of the controller; the third measurement auxiliary block is electrically connected to a third driver for controlling the operation of the controller.

[0010] In some embodiments, the first driver, the second driver, and the third driver have the same structure. The first driver includes a working fixed panel and a driving source, and the four driving sources are respectively arranged at four side positions of the working fixed panel.

[0011] In some embodiments, the measuring support member and the measuring limiting member are rotatably connected through a working rotating shaft.

[0012] In some embodiments, the measuring support member includes a working support bar, a working support main board, and a working support auxiliary board. The working support bar is a strip-shaped board, and the long side of the working support bar is rotatably connected to the measuring limiting member; the working support main board is an isosceles trapezoid, the lower base of the working support main board is connected to the long side of the working support bar, and the top of the working support auxiliary board is provided with an auxiliary groove, and the bottom of the working support auxiliary board is connected to the upper base of the working support main board.

[0013] In some embodiments, the measuring support member further includes a working support foot board, and the working support foot board is a right triangle, and the working support foot board is vertically connected to the lower surface of the working support auxiliary board through its hypotenuse.

[0014] The technical solution of the present application has at least the following advantages and beneficial effects: The present invention provides a pipe system on-site lofting drawing ruler, which is provided with a measuring operation member, a measuring support member, and a measuring limiting member. The image is drawn and measured through the provided measuring operation member, the measuring operation member is installed through the provided measuring limiting member, and the whole drawing device is placed on a sloping measuring surface through the measuring support member, so that the staff can be more comfortable when drawing and measuring, thereby improving the accuracy of drawing and measuring. The measuring limiting member is provided with a main measuring working block, a first measuring auxiliary block, a second measuring auxiliary block, and a third measuring auxiliary block. By driving the main measuring working block or the first measuring auxiliary block or the second measuring auxiliary block or the third measuring auxiliary block to extend and abutting it against the measuring surface, the staff can then draw along its edge, solving the problem of large actual installation errors caused by freehand drawing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is one of the structural diagrams of the present invention; Figure 2 is one of the top views of the present invention; Figure 3 is the structural diagram of the main measuring working block in the present invention; Figure 4 is the second top view of the present invention; Figure 5Bottom view of the present invention; Figure 6 Structural diagram of the second measurement auxiliary block in the present invention; Figure 7 Rear view of the present invention; Figure 8 One of the structural schematic diagrams of the first driver in the present invention; Figure 9 Another structural schematic diagram of the first driver in the present invention; Figure 10 Schematic diagram of an implementation manner of the present invention; In the figure: 1 - measurement operating member; 11 - first measurement auxiliary block; 12 - second measurement auxiliary block; 13 - third measurement auxiliary block; 14 - main measurement working block; 15 - right trapezoidal measurement groove; 16 - special-shaped measurement groove; 17 - rectangular measurement groove; 18 - first working strip; 19 - second working strip; 20 - third working strip; 2 - measurement support member; 21 - working support strip; 22 - working support main board; 23 - working support auxiliary board; 24 - working support foot board; 3 - measurement limiting member; 4 - first driver; 5 - second driver; 6 - third driver; 7 - working rotating shaft; 8 - driving source; 9 - working fixed panel. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1 - 10 , the embodiments of the present invention provide a pipe system on-site lofting drawing ruler, including a measurement operating member 1, a measurement support member 2, and a measurement limiting member 3. The measurement support member 2 is movably connected to the measurement limiting member 3. A working preparation cavity for placing the measurement operating member 1 is provided on one side of the measurement limiting member 3, and the measurement limiting member 3 is movably connected in the working preparation cavity. Among them, the measurement limiting member 3 includes a main measurement working block 14, a first measurement auxiliary block 11, a second measurement auxiliary block 12, and a third measurement auxiliary block 13. The first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13 are arranged at intervals and are all in contact with the outer edge of the main measurement working block 14. The main measurement working block 14, the first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13 work independently.

[0018] Further improved, the work preparation chamber is square. After the edges of the main measurement work block 14, the first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13 are fitted together, a square block structure is formed. One side surface of the first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13 away from the main measurement work block 14 is slidably connected to the inner side wall of the work preparation chamber.

[0019] Further improved, a right trapezoidal measurement groove 15 is formed at the top of the main measurement work block 14, and the right trapezoidal measurement groove 15 cooperates with the first measurement auxiliary block 11; a special-shaped measurement groove 16 is formed at one end of the main measurement work block 14 away from the right trapezoidal measurement groove 15, and the special-shaped measurement groove 16 cooperates with the second measurement auxiliary block 12; a rectangular measurement groove 17 is formed on one side of the main measurement work block 14, and the rectangular measurement groove 17 cooperates with the third measurement auxiliary block 13.

[0020] Further improved, the second measurement auxiliary block 12 includes a first working strip 18, a second working strip 19, and a third working strip 20. One end of the first working strip 18 is perpendicularly connected to one end of the second working strip 19. The middle of the second working strip 19 is connected with the third working strip 20. The inner edges of the first working strip 18 and the third working strip 20 are in arc transition.

[0021] Further improved, one end of the first working strip 18 away from the second working strip 19 is an acute angle, one end of the second working strip 19 away from the first working strip 18 is an acute angle. The width of the first working strip 18 is the same as the width of the second working strip 19. The width of the third working strip 20 is smaller than the width of the second working strip 19. The length of the first working strip 18 is greater than the length of the second working strip 19. The length of the third working strip 20 is smaller than the length of the second working strip 19.

[0022] Further improved, the first measurement auxiliary block 11 is electrically connected to a first driver 4 for controlling the operation of the controller; the second measurement auxiliary block 12 is electrically connected to a second driver 5 for controlling the operation of the controller; the third measurement auxiliary block 13 is electrically connected to a third driver 6 for controlling the operation of the controller.

[0023] Further improved, the first driver 4, the second driver 5, and the third driver 6 have the same structure. The first driver 4 includes a working fixed panel 9 and a driving source 8. Four driving sources 8 are respectively arranged at four side positions of the working fixed panel 9.

[0024] Further improved, the measurement support member 2 and the measurement limiting member 3 are rotationally connected through a working rotating shaft 7.

[0025] Further improved, the measurement support member 2 includes a working support bar 21, a working support main board 22, and a working support auxiliary board 23. The working support bar 21 is a strip-shaped board, and the long side of the working support bar 21 is rotatably connected to the measurement limiting member 3; the working support main board 22 is an isosceles trapezoid, the lower base of the working support main board 22 is connected to the long side of the working support bar 21, and the top of the working support auxiliary board 23 is provided with an auxiliary groove, and the bottom of the working support auxiliary board 23 is connected to the upper base of the working support main board 22.

[0026] Further improved, the measurement support member 2 further includes a working support foot plate 24. The working support foot plate 24 is a right triangle, and the working support foot plate 24 is vertically connected to the lower surface of the working support auxiliary board 23 through its hypotenuse.

[0027] Embodiment 1 Please refer to Figures 1 - 10 , the present invention provides a pipe system on-site lofting drawing ruler, and the device includes: a measurement operation member 1, a measurement support member 2, and a measurement limiting member 3. The measurement support member 2 is movably connected to the measurement limiting member 3. A working preparation cavity for placing the measurement operation member 1 is provided on one side of the measurement limiting member 3, and the measurement limiting member 3 is movably connected in the working preparation cavity. Among them, the measurement limiting member 3 includes a main measurement working block 14, a first measurement auxiliary block 11, a second measurement auxiliary block 12, and a third measurement auxiliary block 13. The first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13 are arranged at intervals and are all attached to the outer edge of the main measurement working block 14, and the main measurement working block 14, the first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13 work independently.

[0028] It is worth noting that in this embodiment, the measurement operation member 1, the measurement support member 2, and the measurement limiting member 3 are provided. The image is drawn and measured through the provided measurement operation member 1, and the measurement operation member 1 is installed through the provided measurement limiting member 3. As Figure 10 shown, the entire drawing device is placed on a sloping measurement surface through the measurement support member 2, so that the staff can be more comfortable when drawing and measuring, thereby improving the accuracy of drawing and measuring. The measurement limiting member 3 is provided with a main measurement working block 14, a first measurement auxiliary block 11, a second measurement auxiliary block 12, and a third measurement auxiliary block 13. By driving the main measurement working block 14 or the first measurement auxiliary block 11 or the second measurement auxiliary block 12 or the third measurement auxiliary block 13 to extend and abutting it against the measurement surface, the staff can then draw along its edge.

[0029] Figure 3It is a schematic structural diagram of the main measurement working block 14. Specifically, side lengths: A = 15; B = 12; C = 24; D = 15; E = 18; F = 14.14; G = 10; H = 27; I = 10; J = 25; K = 11; L = 13.95; M = 11.43; N = 10; O = 3.75; P = 7; Q = R5; R = 12; S = 30.57; T = 11.43; U = 18; V = 13.95. It should be noted that the unit of the side length is mm, and cm can be used in other usage cases. Angles: a = 145°; b = 135°; c = 145°. This embodiment provides at least the drawing of 25 kinds of dimension images including length, angle, and radian.

[0030] The work preparation cavity is square. After the main measurement working block 14, the first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13 are edge - fitted, a square block structure is formed. One - side surfaces of the first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13 away from the main measurement working block 14 are all slidably connected to the inner side wall of the work preparation cavity.

[0031] A right - angled trapezoidal measurement groove 15 is opened at the top of the main measurement working block 14, and the right - angled trapezoidal measurement groove 15 cooperates with the first measurement auxiliary block 11; a special - shaped measurement groove 16 is opened at one end of the main measurement working block 14 away from the right - angled trapezoidal measurement groove 15, and the special - shaped measurement groove 16 cooperates with the second measurement auxiliary block 12; a rectangular measurement groove 17 is opened on one side of the main measurement working block 14, and the rectangular measurement groove 17 cooperates with the third measurement auxiliary block 13.

[0032] The second measurement auxiliary block 12 includes a first working strip 18, a second working strip 19, and a third working strip 20. One end of the first working strip 18 is perpendicularly connected to one end of the second working strip 19. The middle of the second working strip 19 is connected with the third working strip 20. The inner edges of the first working strip 18 and the third working strip 20 are in arc transition. The drawing of the arc is realized through the set arc transition, and the drawing of the right - angled line is realized through the perpendicular connection.

[0033] One end of the first working strip 18 away from the second working strip 19 is an acute angle, one end of the second working strip 19 away from the first working strip 18 is an acute angle. The width of the first working strip 18 is the same as the width of the second working strip 19. The width of the third working strip 20 is less than the width of the second working strip 19. The length of the first working strip 18 is greater than the length of the second working strip 19. The length of the third working strip 20 is less than the length of the second working strip 19.

[0034] The first measurement auxiliary block 11 is electrically connected to a first driver 4 for the operation of the controller; the second measurement auxiliary block 12 is electrically connected to a second driver 5 for the operation of the controller; the third measurement auxiliary block 13 is electrically connected to a third driver 6 for the operation of the controller. The first driver 4, the second driver 5, and the third driver 6 are provided to control the extension and retraction of the first measurement auxiliary block 11, the second measurement auxiliary block 12, and the third measurement auxiliary block 13.

[0035] The first driver 4, the second driver 5, and the third driver 6 have the same structure. The first driver 4 includes a working fixed panel 9 and a driving source 8, and the four driving sources 8 are respectively arranged at the four side positions of the working fixed panel 9.

[0036] Embodiment 2 A pipe system on-site lofting drawing ruler includes a measurement operating member 1, a measurement support member 2, and a measurement limiting member 3, and the measurement support member 2 is movably connected to the measurement limiting member 3. The second measurement auxiliary block 12 includes a first working strip 18, a second working strip 19, and a third working strip 20. One end of the first working strip 18 is perpendicularly connected to one end of the second working strip 19, the middle of the second working strip 19 is connected to the third working strip 20, and the inner edges of the first working strip 18 and the third working strip 20 are in arc transition. The first working strip 18, the second working strip 19, and the third working strip 20 provide the drawing and measurement of the dimensions in 11, including length, angle, and radian.

[0037] One end of the first working strip 18 away from the second working strip 19 is an acute angle, one end of the second working strip 19 away from the first working strip 18 is an acute angle, the width of the first working strip 18 is the same as the width of the second working strip 19, the width of the third working strip 20 is smaller than the width of the second working strip 19, the length of the first working strip 18 is greater than the length of the second working strip 19, and the length of the third working strip 20 is smaller than the length of the second working strip 19.

[0038] The measurement support member 2 and the measurement limiting member 3 are rotatably connected through a working rotating shaft 7. By providing the working rotating shaft 7, different slopes can be adapted, and the applicable range of the device can be improved.

[0039] The measurement support member 2 includes a working support strip 21, a working support main board 22, and a working support auxiliary board 23. The working support strip 21 is a strip-shaped board, and the long side of the working support strip 21 is rotatably connected to the measurement limiting member 3; the working support main board 22 is an isosceles trapezoid, the lower bottom of the working support main board 22 is connected to the long side of the working support strip 21, the top of the working support auxiliary board 23 has an auxiliary slot opened, and the bottom of the working support auxiliary board 23 is connected to the upper bottom of the working support main board 22. By providing the working support strip 21, the working support main board 22, and the working support auxiliary board 23, on the one hand, it can provide support for the operator's arm, and on the other hand, it can reduce the mass of the whole device.

[0040] The measuring support member 2 further includes a working support foot plate 24, which is a right triangle. The working support foot plate 24 is vertically connected to the lower surface of the working support auxiliary plate 23 through its hypotenuse. The provided working support foot plate 24 provides bottom support for the measuring support member 2, avoiding slipping during the measurement and drawing processes.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A field lofting drawing ruler for pipe systems, characterized in that, Including: A measurement operating member (1), a measurement support member (2), and a measurement limiting member (3). The measurement support member (2) is movably connected to the measurement limiting member (3). A work preparation cavity for placing the measurement operating member (1) is provided on one side of the measurement limiting member (3), and the measurement limiting member (3) is movably connected within the work preparation cavity. Among them, the measurement limiting member (3) includes a main measurement work block (14), a first measurement auxiliary block (11), a second measurement auxiliary block (12), and a third measurement auxiliary block (13). The first measurement auxiliary block (11), the second measurement auxiliary block (12), and the third measurement auxiliary block (13) are arranged at intervals and are all in contact with the outer edge of the main measurement work block (14), and the main measurement work block (14), the first measurement auxiliary block (11), the second measurement auxiliary block (12), and the third measurement auxiliary block (13) work independently.

2. The on-site lofting drawing scale for pipe systems according to claim 1, wherein The work preparation cavity is square. After the edges of the main measurement work block (14), the first measurement auxiliary block (11), the second measurement auxiliary block (12), and the third measurement auxiliary block (13) are fitted together, a square block structure is formed. One side surface of the first measurement auxiliary block (11), the second measurement auxiliary block (12), and the third measurement auxiliary block (13) away from the main measurement work block (14) is slidably connected to the inner side wall of the work preparation cavity.

3. The on-site lofting drawing scale for pipe systems according to claim 2, characterized in that, A right trapezoidal measurement groove (15) is provided at the top of the main measurement work block (14), and the right trapezoidal measurement groove (15) cooperates with the first measurement auxiliary block (11); a special-shaped measurement groove (16) is provided at one end of the main measurement work block (14) away from the right trapezoidal measurement groove (15), and the special-shaped measurement groove (16) cooperates with the second measurement auxiliary block (12); a rectangular measurement groove (17) is provided on one side of the main measurement work block (14), and the rectangular measurement groove (17) cooperates with the third measurement auxiliary block (13).

4. A on-site lofting drawing scale for pipe systems according to claim 3, characterized in that, The second measurement auxiliary block (12) includes a first working strip (18), a second working strip (19), and a third working strip (20). One end of the first working strip (18) is perpendicularly connected to one end of the second working strip (19), the third working strip (20) is connected to the middle of the second working strip (19), and the inner edges of the first working strip (18) and the third working strip (20) are in arc transition.

5. A on-site lofting drawing ruler for pipe systems according to claim 4, characterized in that, One end of the first working strip (18) away from the second working strip (19) is an acute angle, one end of the second working strip (19) away from the first working strip (18) is an acute angle, the width of the first working strip (18) is the same as the width of the second working strip (19), the width of the third working strip (20) is less than the width of the second working strip (19), the length of the first working strip (18) is greater than the length of the second working strip (19), and the length of the third working strip (20) is less than the length of the second working strip (19).

6. A on-site lofting drawing ruler for pipe systems according to claim 1, characterized in that, The first measurement auxiliary block (11) is electrically connected to a first driver (4) for the controller to operate; the second measurement auxiliary block (12) is electrically connected to a second driver (5) for the controller to operate; the third measurement auxiliary block (13) is electrically connected to a third driver (6) for the controller to operate.

7. A on-site lofting drawing ruler for pipe systems according to claim 6, characterized in that, The first driver (4), the second driver (5), and the third driver (6) have the same structure. The first driver (4) includes a working fixed panel (9) and a driving source (8), and the four driving sources (8) are respectively arranged at the four side positions of the working fixed panel (9).

8. A field lofting drawing ruler for pipe systems according to claim 1, characterized in that, The measurement support member (2) and the measurement limiting member (3) are rotatably connected through a working rotating shaft (7).

9. A on-site lofting drawing scale for pipe systems according to claim 8, characterized in that, The measurement support member (2) includes a working support bar (21), a working support main board (22), and a working support auxiliary board (23). The working support bar (21) is a strip-shaped board, and the long side of the working support bar (21) is rotatably connected to the measurement limiting member (3); the working support main board (22) is an isosceles trapezoid, the lower base of the working support main board (22) is connected to the long side of the working support bar (21), and the top of the working support auxiliary board (23) has an auxiliary groove opened, and the bottom of the working support auxiliary board (23) is connected to the upper base of the working support main board (22).

10. A pipe system on-site lofting drawing scale according to claim 9, characterized in that, The measurement support member (2) further includes a working support foot board (24). The working support foot board (24) is a right triangle, and the working support foot board (24) is vertically connected to the lower surface of the working support auxiliary board (23) through its hypotenuse.

Images