Steel structure installation angle measuring device

Abstract

The application discloses a kind of steel structure installation angle measuring devices, it is related to angle measurement technical field, its technical solutions are: including: first measuring plate, first measuring plate bottom is equipped with second measuring plate, recess one is set in first measuring plate and second measuring plate;Measuring guide plate is set to two, two measuring guide plates are respectively slidably arranged in two recesses one;U-shaped frame is fixedly connected at the top of second measuring plate, shaft one is embedded in U-shaped frame, rotating block is fixedly covered outside shaft one, the beneficial effects of the application are: when loosening knob, outer frame, rubber pad and other components will move downwards to press and fix shaft three, so that the arbitrary rotation of shaft three can be avoided, and then the arbitrary rotation of shaft one, rotating block, first measuring plate and other components can be avoided, so that the angle between first measuring plate and second measuring plate can be avoided to change, more convenient in the process of measuring, photographing and leaving marks.

Description

Technical Field

[0001] This invention relates to the field of angle measurement technology, and more specifically to a steel structure installation angle measuring device. Background Technology

[0002] In order to ensure the accuracy of the assembly of steel structure rods or plates during building construction, an angle measuring device is needed to measure the angle of the installed parts after the installation is completed. The existing angle measuring device is found to have an angle that is prone to change between the two measuring plates during use. When taking photos to record the measurement, it is inconvenient to hold the measuring device with one hand while taking the photo. Therefore, it needs to be improved. Therefore, it is necessary to invent a steel structure installation angle measuring device. Summary of the Invention

[0003] Therefore, the present invention provides a steel structure installation angle measuring device to solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a steel structure installation angle measuring device, comprising: A first measuring plate, and a second measuring plate is provided at the bottom of the first measuring plate. Both the first measuring plate and the second measuring plate are provided with a groove. Two measuring guides are provided, and the two measuring guides are respectively slidably disposed in two grooves. A U-shaped frame is fixedly connected to the top of the second measuring plate. A rotating shaft is embedded in the U-shaped frame. A rotating block is fixedly sleeved on the outside of the rotating shaft. The rotating block is fixedly connected to the bottom of the first measuring plate. Auxiliary components are used to prevent changes in the opening and closing angle; Telescopic assembly, which is used to telescopically move two measuring guides on a first measuring plate and a second measuring plate.

[0005] Preferably, the auxiliary component includes: A connecting block is fixedly connected to the top of the second measuring plate. A second rotating shaft is embedded in the connecting block, and a cavity is also provided in the connecting block, through which the second rotating shaft passes. A bevel gear one is fixedly connected to the front end of a rotating shaft one. A bevel gear two is provided at the front end of the rotating shaft one and meshes with it. A rotating shaft three is fixedly connected to one side of the bevel gear two. The rotating shaft three is embedded in the rotating shaft two and the rotating shaft three is connected to the rotating shaft two through a bearing. A rib groove is formed on the second rotating shaft. A rib rod is slidably provided in the rib groove. A fixing block is fixedly sleeved on one end of the rib rod. A knob is fixedly sleeved on the outside of the fixing block. An angle display dial is fixedly connected to the front side of the second measuring plate. A rotating rod is fixedly connected to the front side of the bevel gear. The rotating rod passes through the angle display dial. An indicator needle is fixedly connected to one side of the rotating rod. The indicator needle is located inside the angle display dial. The rotating rod and the angle display dial are connected by a bearing.

[0006] Preferably, the auxiliary component further includes: A second groove is formed on the top of the second measuring plate. A movable block is slidably disposed in the second groove. The movable block is sleeved on the outside of the knob and connected to it through a bearing. Box 1 is fixedly connected in groove 2. A through groove 1 is opened on one side of box 1. A piston 1 is provided inside box 1. A moving rod 1 is fixedly connected between piston 1 and moving block. The moving rod 1 passes through through groove 1. A spring is provided inside box 1 and the two ends of the spring are fixedly connected to piston 1 and the inner wall of the other side of box 1, respectively. Box 2 is fixedly embedded in the second measuring plate. Box 2 has a through groove 2 on its top. Box 2 has a piston 2 inside. The rotating shaft 3 is fitted with an outer frame. A rubber pad is fixedly connected to the inner wall of the outer frame. The rubber pad is in contact with the rotating shaft 3. A moving rod 2 is fixedly connected between the outer frame and the piston 2. The moving rod 2 passes through the through groove 2. Box 2 is fixedly connected to box 1 by a pipe 1.

[0007] Preferably, the first moving rod slides in contact with the first through groove, the first piston slides in contact with the first housing, the second moving rod slides in contact with the second through groove, and the second piston slides in contact with the second housing.

[0008] Preferably, the telescopic component includes: There are two housings, which are fixedly embedded in the first measuring plate and the second measuring plate respectively. Each of the two housings has a through groove on one side. Each of the two housings has a piston inside. Each of the two pistons is fixedly connected to a moving rod through the two measuring guide plates. The two moving rods pass through the two through grooves respectively. Box 4 is fixedly connected to the second measuring plate. Box 4 is located behind the connecting block. A through groove 4 is opened on one side of box 4. A piston 4 is provided inside box 4. A moving rod 4 that passes through the through groove 4 is fixedly connected to one side of piston 4. Pipe 2 is fixedly connected between box 4 and one of box 3, and pipe 2 is fixedly embedded in the second measuring plate; A flexible hose is fixedly connected between housing four and another housing three. A cavity two is provided on the first measuring plate, and the flexible hose is located inside the cavity two.

[0009] Preferably, the telescopic component further includes: The support block is provided in two parts, and both support blocks are fixedly connected to the second measuring plate. Threaded rods are embedded in the two second measuring plates, and threaded blocks are sleeved on the outside of the threaded rods. The threaded blocks and threaded rods are connected by threads. A movable plate is fixedly connected between the threaded block and the movable rod four. A guide rod is fixedly connected to the second measuring plate. The guide rod passes through the threaded block and slides in contact with it. The mounting base is sleeved on the outside of the threaded rod. Both the mounting base and the second rotating shaft are fixedly sleeved with sprockets. A chain is sleeved on the outside of the two sprockets. The two sprockets are connected by a chain drive. The chain is located in the first cavity.

[0010] Preferably, the piston three is in sliding contact with the housing three, the moving rod three is in sliding contact with the through groove three, the piston four is in sliding contact with the housing four, and the moving rod four is in sliding contact with the through groove four.

[0011] Preferably, the rotating shaft is connected to the U-shaped frame via a bearing.

[0012] Preferably, the second rotating shaft is connected to the connecting block via a bearing.

[0013] Preferably, the threaded rod is connected to the support block via a bearing.

[0014] The beneficial effects of this invention are: 1. This invention, through the design of auxiliary components, requires pushing a knob to move the moving block when measuring angles. This allows air from housing one to enter housing two, causing piston two, moving rod two, outer frame, rubber pad, and other components to move upwards, thereby releasing the fixation on rotating shaft three. When the knob is released, the outer frame, rubber pad, and other components move downwards to press and fix rotating shaft three, thus preventing rotating shaft three from rotating arbitrarily. This, in turn, prevents rotating shaft one, rotating block, first measuring plate, and other components from rotating arbitrarily, thus preventing changes in the angle between the first and second measuring plates, making the measurement, photographing, and recording process more convenient. 2. By designing a telescopic component, the present invention allows for adjustment of the lengths of the first and second measuring plates during measurement. This enables flexible adjustment of the measuring arm length according to different measurement objects and ranges, thereby increasing the applicability of the device. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 The main sectional view provided by the present invention Figure 1 ; Figure 3 Provided by the present invention Figure 2 Enlarged view of point A in the image; Figure 4 Provided by the present invention Figure 2 Enlarged view of point B in the image; Figure 5 The main sectional view provided by the present invention Figure 2 ; Figure 6 A perspective view of components such as housing 1, housing 2, bevel gear 1, and bevel gear 2 provided by the present invention; Figure 7 Provided by the present invention Figure 6 Exploded 3D view; Figure 8 A perspective view of the components such as the knob, the second rotating shaft, the chain, and the third housing provided by the present invention; Figure 9 Provided by the present invention Figure 8 Exploded 3D view; Figure 10 The rear-view perspective view provided for this invention; In the diagram: 1. First measuring plate; 2. Second measuring plate; 3. Groove 1; 4. Measuring guide plate; 5. U-shaped frame; 6. Rotating shaft 1; 7. Rotating block; 8. Connecting block; 9. Rotating shaft 2; 10. Bevel gear 1; 11. Bevel gear 2; 12. Rotating shaft 3; 13. Rib groove; 14. Rib rod; 15. Fixing block; 16. Knob; 17. Groove 2; 18. Moving block; 19. Housing 1; 20. Piston 1; 21. Moving rod 1; 22. Spring; 23. Housing 2; 24. Piston 25. Outer frame; 26. Rubber pad; 27. Moving rod 2; 28. Pipe 1; 29. ​​Box 3; 30. Piston 3; 31. Moving rod 3; 32. Box 4; 33. Piston 4; 34. Moving rod 4; 35. Pipe 2; 36. Hoses; 37. Support block; 38. Threaded rod; 39. Threaded block; 40. Moving plate; 41. Guide rod; 42. Mounting base; 43. Sprocket; 44. Chain; 45. Angle display dial; 46. Rotating rod; 47. Indicator needle. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] See attached document Figure 1 - Appendix Figure 10 The present invention provides a steel structure installation angle measuring device, comprising: A first measuring plate 1, a second measuring plate 2 is provided at the bottom of the first measuring plate 1, and a groove 3 is provided on both the first measuring plate 1 and the second measuring plate 2; Two measuring guide plates 4 are provided, and the two measuring guide plates 4 are respectively slidably disposed in two grooves 3; U-shaped frame 5 is fixedly connected to the top of the second measuring plate 2. A rotating shaft 6 is embedded in the U-shaped frame 5. A rotating block 7 is fixedly sleeved on the outside of the rotating shaft 6. The rotating block 7 is fixedly connected to the bottom of the first measuring plate 1. Auxiliary components are used to prevent changes in the opening and closing angle; A telescopic assembly for extending and retracting the two measuring guide plates 4 on the first measuring plate 1 and the second measuring plate 2; The auxiliary components include: Connecting block 8 is fixedly connected to the top of the second measuring plate 2. A rotating shaft 9 is embedded in the connecting block 8. A cavity is also opened in the connecting block 8, and the rotating shaft 9 passes through the cavity. A bevel gear 10 is fixedly connected to the front end of a rotating shaft 6. A bevel gear 21 is provided at the front end of the rotating shaft 6 and meshes with it. A rotating shaft 32 is fixedly connected to one side of the bevel gear 21. The rotating shaft 32 is embedded in the rotating shaft 29. The rotating shaft 32 and the rotating shaft 29 are connected by a bearing. A rib groove 13 is opened on the second rotating shaft 9. A rib rod 14 is slidably provided in the rib groove 13. A fixing block 15 is fixedly sleeved on one end of the rib rod 14, and a knob 16 is fixedly sleeved on the outside of the fixing block 15. An angle display dial 45 is fixedly connected to the front side of the second measuring plate 2. A rotating rod 46 is fixedly connected to the front side of the bevel gear 11. The rotating rod 46 passes through the angle display dial 45. An indicator needle 47 is fixedly connected to one side of the rotating rod 46. The indicator needle 47 is located inside the angle display dial 45. The rotating rod 46 and the angle display dial 45 are connected by a bearing.

[0020] The auxiliary components also include: The second groove 17 is formed on the top of the second measuring plate 2. A movable block 18 is slidably provided in the second groove 17. The movable block 18 is sleeved on the outside of the knob 16 and connected to it through a bearing. Box 19 is fixedly connected in groove 2 17. A through groove 1 is opened on one side of box 19. A piston 20 is provided inside box 19. A moving rod 21 is fixedly connected between piston 20 and moving block 18. The moving rod 21 passes through through groove 1. A spring 22 is provided inside box 19. The two ends of spring 22 are fixedly connected to piston 20 and the inner wall of the other side of box 19, respectively. Box 23 is fixedly embedded in the second measuring plate 2. The top of box 23 has a through groove 2. Inside box 23 is piston 24. The outside of rotating shaft 312 is fitted with an outer frame 25. A rubber pad 26 is fixedly connected to the inner wall of the outer frame 25. The rubber pad 26 is in contact with rotating shaft 312. A moving rod 27 is fixedly connected between the outer frame 25 and piston 24. The moving rod 27 passes through through groove 2. A pipe 28 is fixedly connected between box 23 and box 19. The first moving rod 21 slides in contact with the first through groove, the first piston 20 slides in contact with the first housing 19, the second moving rod 27 slides in contact with the second through groove, the second piston 24 slides in contact with the second housing 23; In this implementation scheme, an auxiliary component is designed so that when measuring the angle, the knob 16 needs to be pushed to move the moving block 18, which allows air in the first housing 19 to enter the second housing 23. This causes the piston 24, the moving rod 27, the outer frame 25, the rubber pad 26, and other components to move upward, thereby releasing the fixation on the rotating shaft 3 12. When the knob 16 is released, the outer frame 25, the rubber pad 26, and other components will move downward to press and fix the rotating shaft 3 12, thus preventing the rotating shaft 3 12 from rotating arbitrarily. This also prevents the rotating shaft 6, the rotating block 7, the first measuring plate 1, and other components from rotating arbitrarily, thereby preventing the angle between the first measuring plate 1 and the second measuring plate 2 from changing. To achieve the purpose of adjusting the length of the measuring arm, this device adopts the following technical solution: The telescopic assembly includes: two housings 29, which are fixedly embedded in the first measuring plate 1 and the second measuring plate 2 respectively. Each housing 29 has a through slot 3 on one side, and each housing 29 has a piston 30 inside. The two pistons 30 are fixedly connected to the two measuring guide plates 4 by moving rods 31, which pass through the two through slots 3 respectively; and a fourth housing 32, which is fixedly connected to... On the second measuring plate 2, housing 4 32 is located behind the connecting block 8. A through groove 4 is opened on one side of housing 4 32. Piston 4 33 is installed inside housing 4 32. A moving rod 4 34 that passes through the through groove 4 is fixedly connected to one side of piston 4 33. Pipe 2 35 is fixedly connected between housing 4 32 and one of housing 3 29. Pipe 2 35 is fixedly embedded on the second measuring plate 2. Hose 36 is fixedly connected between housing 4 32 and another housing 3 29. A cavity 2 is opened on the first measuring plate 1. Hose 36 is located in cavity 2. The telescopic assembly also includes: two support blocks 37, each fixedly connected to a second measuring plate 2; threaded rods 38 are embedded in the two second measuring plates 2; threaded blocks 39 are sleeved on the outside of the threaded rods 38; the threaded blocks 39 and the threaded rods 38 are connected by threads; a movable plate 40 is fixedly connected between the threaded blocks 39 and the movable rods 34; a guide rod 41 is fixedly connected to the second measuring plate 2; the guide rod 41 passes through the threaded blocks 39 and slides in contact with them; and a mounting base 42 is sleeved on the outside of the threaded rods 38. The mounting base 42 and the rotating shaft 9 are both fixedly fitted with sprockets 43. The two sprockets 43 are fitted with chains 44, and the two sprockets 43 are connected by the chain 44. The chain 44 is located in the cavity. The piston 30 slides in contact with the housing 329, the moving rod 31 slides in contact with the through groove 3, the piston 43 slides in contact with the housing 42, the moving rod 44 slides in contact with the through groove 4. The telescopic assembly can make the two measuring guide plates 4 telescopically move on the first measuring plate 1 and the second measuring plate 2, thereby adjusting the length of the measuring arm. In order to reduce wear, the device adopts the following technical solution: the first rotating shaft 6 is connected to the U-shaped frame 5 through bearings, the second rotating shaft 9 is connected to the connecting block 8 through bearings, and the threaded rod 38 is connected to the support block 37 through bearings. The bearing connection can reduce wear.

[0021] The usage process of this invention is as follows: When it is necessary to measure the angle between two steel structural components, place this device on a steel structure, so that the second measuring plate 2 is in contact with a steel structure. Then, hold the knob 16 and push the knob 16 to the left. This will cause the prism rod 14, the moving block 18, and other components to move to the left. The movement of the moving block 18 will cause the moving rod 21 and the piston 20 to move to the left. Then, under the action of the pipe 28, the air in the housing 19 can enter the housing 23. At the same time, the spring 22 is compressed. When the air enters, the piston 24, the moving rod 27, the outer frame 25, and the rubber pad 26 will all move upward. In this way, the rubber pad 26 will not contact the rotating shaft 12, and thus... Release the fixation on the rotating shaft 12, and then manually move the first measuring plate 1 to make the first measuring plate 1 and the rotating block 7 rotate around the rotating shaft 6. This allows the first measuring plate 1 to be in contact with another steel structure. When the first measuring plate 1 is moved, the rotating shaft 6 will also rotate. The rotation of the rotating shaft 6 drives the bevel gear 10 to rotate, which in turn drives the bevel gear 11 to rotate. The rotation of the bevel gear 11 drives the rotating shaft 12 to rotate. The rotation of the bevel gear 10 also drives the rotating rod 46 to rotate, which in turn drives the indicator needle 47 to rotate. After the first measuring plate 1 is in contact with the other steel structure, the angle between the two steel structures can be determined. After the fit is closed, the knob 16 is released. Then, under the action of the spring 22, the piston 20, piston 24, moving rod 21, and other components return to their original positions. Then, the rubber pad 26 moves downward to press and fix the rotating shaft 12, thereby preventing the rotating shaft 12 from rotating arbitrarily. This also prevents the bevel gear 11, bevel gear 10, rotating shaft 6, rotating block 7, and first measuring plate 1 from rotating arbitrarily. This prevents the angle between the first measuring plate 1 and the second measuring plate 2 from changing, making the measurement, photography, and recording process more convenient. When in use, knob 16 can be turned to rotate the prism rod 14 and the rotating shaft 9. Rotating the rotating shaft 9 will cause the chain 44 to rotate, which in turn will cause the mounting base 42 to rotate. Rotating the mounting base 42 will cause the threaded rod 38 to rotate, which will cause the threaded block 39 to move to the left. This will cause the moving plate 40, the moving rod 34, and the piston 33 to move to the left. Then, under the action of the hose 36 and the pipe 35, the air in the housing 32 will enter the two housings 29, which will cause the two pistons 30 and the two moving rods 31 to move to the right. The movement of the two moving rods to the right will push the two measuring guide plates 4 to move to the right, thereby increasing the length of the first measuring plate 1 and the second measuring plate 2. In this way, the length of the measuring arm can be flexibly adjusted according to different measuring objects and measuring ranges, increasing the applicability of the device. When the measuring guide plates 4 need to be retracted, simply turn knob 16 in the opposite direction.

[0022] The above are merely preferred embodiments of the present invention. Any person skilled in the art can modify the present invention or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A steel structure installation angle measuring device, characterized in that, include: A first measuring plate (1) is provided at the bottom of the first measuring plate (1) and a second measuring plate (2) is provided at the bottom of the first measuring plate (1) and the second measuring plate (2). A groove (3) is provided on both the first measuring plate (1) and the second measuring plate (2). Two measuring guide plates (4) are provided, and the two measuring guide plates (4) are respectively slidably disposed in two grooves (3); A U-shaped frame (5) is fixedly connected to the top of the second measuring plate (2). A rotating shaft (6) is embedded in the U-shaped frame (5). A rotating block (7) is fixedly sleeved on the outside of the rotating shaft (6). The rotating block (7) is fixedly connected to the bottom of the first measuring plate (1). Auxiliary components are used to prevent changes in the opening and closing angle; The auxiliary components include: A connecting block (8) is fixedly connected to the top of the second measuring plate (2). A rotating shaft (9) is embedded in the connecting block (8). A cavity is also opened in the connecting block (8). The rotating shaft (9) passes through the cavity. A bevel gear 1 (10) is fixedly connected to the front end of a rotating shaft 1 (6). The front end of the rotating shaft 1 (6) is provided with a bevel gear 2 (11) that meshes with it. A rotating shaft 3 (12) is fixedly connected to one side of the bevel gear 2 (11). The rotating shaft 3 (12) is embedded on the rotating shaft 2 (9). The rotating shaft 3 (12) and the rotating shaft 2 (9) are connected by a bearing. A rib groove (13) is provided on the second rotating shaft (9). A rib rod (14) is slidably provided in the rib groove (13). A fixing block (15) is fixedly sleeved on one end of the rib rod (14). A knob (16) is fixedly sleeved on the outside of the fixing block (15). An angle display dial (45) is fixedly connected to the front side of the second measuring plate (2). A rotating rod (46) is fixedly connected to the front side of the bevel gear (11). The rotating rod (46) passes through the angle display dial (45). An indicator needle (47) is fixedly connected to one side of the rotating rod (46). The indicator needle (47) is located inside the angle display dial (45). The rotating rod (46) and the angle display dial (45) are connected by a bearing. The auxiliary components also include: The second groove (17) is opened on the top of the second measuring plate (2), and a moving block (18) is slidably provided in the second groove (17). The moving block (18) is sleeved on the outside of the knob (16) and connected to it through a bearing. Box 1 (19) is fixedly connected in groove 2 (17). A through groove 1 is provided on one side of box 1 (19). A piston 1 (20) is provided inside box 1 (19). A moving rod 1 (21) is fixedly connected between piston 1 (20) and moving block (18). The moving rod 1 (21) passes through through groove 1. A spring (22) is provided inside box 1 (19). The two ends of spring (22) are fixedly connected to piston 1 (20) and the inner wall of the other side of box 1 (19), respectively. Box 2 (23) is fixedly embedded on the second measuring plate (2). The top of the box 2 (23) is provided with a through groove 2. The inside of the box 2 (23) is provided with piston 2 (24). The outside of the rotating shaft 3 (12) is fitted with an outer frame (25). The inner wall of the outer frame (25) is fixedly connected with a rubber pad (26). The rubber pad (26) is in contact with the rotating shaft 3 (12). The outer frame (25) and piston 2 (24) are fixedly connected with a moving rod 2 (27). The moving rod 2 (27) passes through the through groove 2. The box 2 (23) and box 1 (19) are fixedly connected with a pipe 1 (28). Telescopic assembly for telescopically moving two measuring guide plates (4) on a first measuring plate (1) and a second measuring plate (2); The telescopic assembly includes: a housing three (29), which is configured as two, the two housing three (29) are respectively fixedly embedded on the first measuring plate (1) and the second measuring plate (2), a through groove three is opened on one side of each of the two housing three (29), a piston three (30) is provided inside each of the two housing three (29), and a moving rod three (31) is fixedly connected between each of the two piston three (30) and the two measuring guide plates (4), and the two moving rod three (31) respectively pass through the two through groove three; Box four (32) is fixedly connected to the second measuring plate (2). Box four (32) is located behind the connecting block (8). A through groove four is opened on one side of box four (32). A piston four (33) is provided inside box four (32). A moving rod four (34) that passes through the through groove four is fixedly connected on one side of piston four (33). Pipe 2 (35) is fixedly connected between box 4 (32) and one of box 3 (29), and pipe 2 (35) is fixedly embedded in the second measuring plate (2); The hose (36) is fixedly connected between the fourth box (32) and another third box (29). The first measuring plate (1) has a cavity two, and the hose (36) is located inside the cavity two. The telescopic assembly further includes: a support block (37), which is configured as two, both of which are fixedly connected to the second measuring plate (2). A threaded rod (38) is embedded in the second measuring plate (2), and a threaded block (39) is sleeved on the outside of the threaded rod (38). The threaded block (39) and the threaded rod (38) are connected by threads. A movable plate (40) is fixedly connected between a threaded block (39) and a movable rod (34). A guide rod (41) is fixedly connected to the second measuring plate (2). The guide rod (41) passes through the threaded block (39) and slides in contact with it. Mounting seat (42) is sleeved on the outside of threaded rod (38). Both mounting seat (42) and rotating shaft (9) are fixedly sleeved with sprockets (43). Chains (44) are sleeved on the outside of the two sprockets (43). The two sprockets (43) are connected by the chain (44) and the chain (44) is located in cavity one.

2. The steel structure installation angle measuring device according to claim 1, characterized in that: The first moving rod (21) slides in contact with the first through groove, the first piston (20) slides in contact with the first box (19), the second moving rod (27) slides in contact with the second through groove, and the second piston (24) slides in contact with the second box (23).

3. The steel structure installation angle measuring device according to claim 1, characterized in that: The piston three (30) slides in contact with the housing three (29), the moving rod three (31) slides in contact with the through groove three, the piston four (33) slides in contact with the housing four (32), and the moving rod four (34) slides in contact with the through groove four.

4. The steel structure installation angle measuring device according to claim 1, characterized in that: The rotating shaft (6) is connected to the U-shaped frame (5) via bearings.

5. The steel structure installation angle measuring device according to claim 1, characterized in that: The rotating shaft (9) and the connecting block (8) are connected by bearings.

6. The steel structure installation angle measuring device according to claim 1, characterized in that: The threaded rod (38) and the support block (37) are connected by bearings.

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