A device and method for detecting squareness of yin and yang corner templates

Abstract

The present invention discloses a device and method for detecting the squareness of a yin-yang corner template, and relates to the technical field of squareness detection. The device for detecting the squareness of a yin-yang corner template comprises a first measuring arm, one side of which is against the template to be measured; and a second measuring arm, which forms a 90° angle with the first measuring arm in the measuring state, and one end of the second measuring arm can slide along the length direction of the first measuring arm. Based on the structural design of the combination of a semicircular protractor and a plane, the inclination of the template to be measured is directly quantified by the rotation angle of the measuring plate; at the same time, through the separate design of the second measuring arm and the template to be measured, the contact area between the two is greatly reduced, and the friction interference of the template surface roughness on the measuring component is effectively avoided, thereby significantly improving the accuracy of the squareness detection result. By keeping the reference frame and the second measuring arm always parallel, the influence of the mechanical structure error on the detection result is eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of squareness detection, and in particular to a device and method for detecting squareness of a yin-yang corner template. Background Art

[0002] In the construction of building formwork projects, the squareness of the Yin-Yang corner formwork directly affects the quality of concrete molding. Currently, high-rise and super-high-rise building construction usually adopts cast-in-place concrete. During the pouring process, the squareness of the Yin-Yang corner formwork will directly affect the squareness of the wall.

[0003] Chinese utility model patent CN207600364U discloses a measuring ruler for measuring the squareness of the inner and outer corners of a house. The device uses a telescopic rod and a main ruler to open to the maximum angle, and then a fixing assembly fixes the outer rod and the main ruler relative to each other; the inner rod slides along the outer rod to adjust the length of the telescopic rod. After the telescopic rod is adjusted, the positioning assembly fixes the inner rod and the outer rod relative to each other; the telescopic rod can be used to conveniently raise the main ruler and movable ruler to a higher position, thereby facilitating the measurement of the squareness of inner and outer corners at different heights.

[0004] In actual operation, the roughness of the template surface to be measured can easily lead to insufficient contact between the detection tool and the template. Especially when there are protrusions on the template surface, it will significantly hinder the complete fit between the measurement tool and the template, and ultimately cause measurement deviation of the squareness data of the inside and outside corners. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device and method for detecting the squareness of a yin-yang corner template, which solves the problems raised in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] In one aspect, the present invention provides a device for detecting squareness of a yin-yang corner template, comprising:

[0008] a first measuring arm, wherein one side of the first measuring arm abuts against the template to be measured;

[0009] a second measuring arm, wherein in the measuring state, the second measuring arm forms a 90° angle with the first measuring arm, and one end of the second measuring arm is slidably arranged along the length direction of the first measuring arm;

[0010] A reference frame, the reference frame is located on one side of the second measuring arm, and the reference frame and the second measuring arm are always parallel;

[0011] The measuring plate is rotatably mounted on the reference frame. The side of the measuring plate close to the template to be measured is a plane, which directly contacts the template to be measured, so that the rotation angle of the measuring plate on the reference frame represents the inclination of the template to be measured.

[0012] Furthermore, the reference frame is a frame-type structure, and observation windows are symmetrically opened on both sides of the upper part of the reference frame. The measuring plate is composed of two groups of semicircular protractors spliced together, and the sides of the two groups of protractors away from each other are flat, and the scale lines on the protractor surfaces correspond to the observation windows.

[0013] Furthermore, the reference frame and the measuring plate are rotatably connected via a third rotating shaft, and a sleeve is fixed to the upper middle section of the reference frame; the upper end of the third rotating shaft extends into the interior of the sleeve and is fixed with a second magnet, a lifting column is provided on the top of the sleeve, the lifting column is slidably arranged along the axial direction of the sleeve, and the lower end of the lifting column extends into the interior of the sleeve and is installed with a first magnet that is magnetically attracted to the second magnet; the upper end of the lifting column extends out of the sleeve and is fixed with a button, and a reset spring is installed between the button and the top of the sleeve.

[0014] Furthermore, limiting grooves are symmetrically provided on both sides of the outer wall of the third rotating shaft, limiting spring pieces are symmetrically installed inside the sleeve, and a C-shaped spring piece adapted to the limiting groove is provided on the side of the limiting spring piece facing the third rotating shaft; when the measuring plate is parallel to the reference frame, the C-shaped spring piece is engaged with the limiting groove.

[0015] Furthermore, a second slide is slidably connected to the second measuring arm, a transmission cavity is provided inside the second slide, and a top plate is fixed to the upper surface of the second slide; a first rotating shaft is installed on the top plate, the lower end of the first rotating shaft extends into the transmission cavity, and a clockwork spring is installed between the first rotating shaft and the second slide, the clockwork spring is used to drive the first rotating shaft to rotate, and a connecting piece adapted to the reference frame is installed on the outside of the first rotating shaft.

[0016] Furthermore, the connecting member includes a telescopic rod fixed to the upper end of the outer side of the first rotating shaft, and the telescopic end of the telescopic rod is rotatably connected to the outer wall of the sleeve; a guide groove is provided on the upper surface of the top plate, and a guide frame is slidably installed on the guide groove, and a first slider is provided on the lower surface of the guide frame, and the first slider is slidably set along the length direction of the guide frame and the guide groove, and a second slider is slidably connected to the upper surface of the guide frame along the length direction, and the second slider is fixedly connected to the reference frame.

[0017] Furthermore, a ratchet is installed at the lower end of the outer side of the first rotating shaft, and a movable arm is rotatably installed inside the transmission cavity, and a pawl adapted to the ratchet is provided at one end of the movable arm. There are two groups of movable arms, and the two groups of movable arms are symmetrically arranged on both sides of the ratchet; a second rotating shaft is rotatably installed inside the transmission cavity between the two groups of movable arms, and a cam is installed on the second rotating shaft, and grooves adapted to the cam are provided on the opposite surfaces of the two groups of movable arms; U-shaped spring sheets are fixed on both sides of the inner wall of the transmission cavity, one end of the U-shaped spring sheet is fixedly connected to the inner wall of the transmission cavity, and the other end of the U-shaped spring sheet is fixedly connected to the movable arm on the same side; wherein, the rotation of the second rotating shaft causes the cam to embed into the groove to push the movable arm to rotate, compress the U-shaped spring sheet and separate the pawl from the ratchet.

[0018] Furthermore, a vertex block is provided at one end of the first measuring arm, and the vertex block is an acute-angle structure.

[0019] Furthermore, a first slide is slidably connected in the length direction of the first measuring arm, the first slide is hinged to one end of the second measuring arm, and the maximum rotation angle between the first slide and the second measuring arm is 90°.

[0020] On the other hand, the present invention also provides a method for detecting the squareness of a positive and negative corner template, comprising the following steps:

[0021] S1. Place one side of the first measuring arm against one side wall of the template to be measured;

[0022] S2. Rotate the plane on the measuring plate until it abuts against the other side wall of the template to be measured, and use the elastic potential energy of the spring to rotate the first rotating shaft to further force the measuring plate to tightly abut against the other side wall of the template to be measured;

[0023] S3. When the plane of the measuring plate is pushed by the template to be measured, the measuring plate rotates around the third axis and deviates from the reference frame to obtain a deflection angle. This deflection angle is the inclination of the template to be measured, and thus the squareness of the template to be measured can be obtained;

[0024] S4. Press the button to attract the first magnet to the second magnet, restricting the rotation of the third shaft to lock the position of the measuring plate and enable reading of the deflection angle.

[0025] S5. Move the second slide on the second measuring arm and adjust the horizontal position of the reference frame to achieve multi-point detection on a single level and improve the accuracy of the detection results.

[0026] The present invention has the following beneficial effects:

[0027] (1) The squareness detection device and detection method of the internal and external corner templates are based on the structural design of a semicircular protractor and a plane combination, and the inclination of the template to be measured is directly quantified by the rotation angle of the measuring plate. At the same time, the second measuring arm and the template to be measured are separated, which greatly reduces the contact area between the two and effectively avoids the friction interference of the template surface roughness on the measuring component, thereby significantly improving the accuracy of the squareness detection results. By keeping the reference frame and the second measuring arm always parallel, the influence of mechanical structure errors on the detection results is eliminated.

[0028] (2) The device and method for detecting the squareness of the internal and external corner templates drive the reference frame to move horizontally by sliding the second slide along the second measuring arm, thereby realizing horizontal multi-point detection on a single level and comprehensively evaluating the squareness deviation distribution of the template.

[0029] (3) The device and method for detecting the squareness of the yin-yang corner template can lock the measuring position with one click through the magnetic attraction between the first magnet and the second magnet, thereby reducing manual intervention. At the same time, the elastic potential energy of the clockwork spring is used to drive the reference frame to move linearly along the direction of the second measuring arm, forcing the plane of the measuring plate to form a stable contact with the template to be measured, and triggering the adaptive offset of the measuring plate around the third axis through the reaction force of the template to be measured, thereby accurately obtaining the deflection angle data, and finally realizing efficient and automated detection of the squareness of the yin-yang corner template.

[0030] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the present invention when it is stored;

[0032] Figure 2 This is a schematic diagram of the present invention applied to the detection of squareness of a recessed corner template;

[0033] Figure 3 For the present invention Figure 2 A top view of

[0034] Figure 4 This is a schematic diagram of the present invention applied to the detection of squareness of a positive corner template;

[0035] Figure 5 For the present invention Figure 4 A top view of

[0036] Figure 6 Schematic diagram of the installation structure of the reference frame in the present invention;

[0037] Figure 7 Schematic diagram of the internal structure of the transmission cavity in the present invention;

[0038] Figure 8 For the present invention Figure 7 A top view of

[0039] Figure 9 Schematic diagram of the bottom structure of the second slide in the present invention;

[0040] Figure 10 Schematic diagram of the installation structure of the guide frame in the present invention;

[0041] Figure 11 Schematic diagram of the connection structure between the protractor and the reference frame in the present invention;

[0042] Figure 12 Schematic diagram of the limiting structure of the third rotating shaft in the present invention;

[0043] Figure 13 For the present invention Figure 11 main view.

[0044] In the figure, 1. first measuring arm; 2. first slide; 3. second measuring arm; 4. through slot; 5. handle; 6. top angle block; 7. top plate; 8. first rotating shaft; 9. telescopic rod; 10. reference frame; 11. measuring plate; 12. second slide; 13. internal angle template; 14. external angle template; 15. guide frame; 16. guide slot; 17. transmission chamber; 18. ratchet; 19. spring; 20. second rotating shaft; 21. cam ; 22. Movable arm; 23. Groove; 24. Pawl; 25. U-shaped spring piece; 26. Notch; 27. Switch plate; 28. First slider; 29. Second slider; 30. Observation window; 31. Sleeve; 32. Third rotating shaft; 33. Button; 34. Lifting column; 35. Return spring; 36. Limiting spring; 37. Limiting groove; 38. First magnet; 39. Second magnet; 40. First scale line; 41. Second scale line. DETAILED DESCRIPTION

[0045] The following is based on Figures 1-13 The present invention describes a device and method for detecting squareness of a positive / negative corner template provided by an embodiment of the present invention.

[0046] On the one hand, see Figures 1-13 An embodiment of the present invention provides a technical solution: a device for detecting the squareness of a yin-yang corner template, comprising a first measuring arm 1 and a second measuring arm 3. One side of the first measuring arm 1 abuts against the template to be measured, forming a reference plate. During measurement, the second measuring arm 3 forms a 90° angle with the first measuring arm 1, and one end of the second measuring arm 3 is capable of sliding along the length of the first measuring arm 1. Both the first measuring arm 1 and the second measuring arm 3 are preferably made of brass, which exhibits excellent corrosion resistance, wear resistance, and deformation resistance, and is more adaptable to measurement environments. The first and second measuring arms 1 and 3 can also be made of hard plastic.

[0047] In addition, to achieve squareness detection of the internal and external corner templates, the present embodiment further includes a reference frame 10, which is located on one side of the second measuring arm 3, and the reference frame 10 is always parallel to the second measuring arm 3. In addition, a measuring plate 11 is rotatably mounted in the reference frame 10. The side of the measuring plate 11 close to the template to be measured is a flat surface, which can directly contact the template to be measured. The inclination of the template to be measured is represented by the rotation angle of the measuring plate 11 on the reference frame 10. Specifically, at the beginning of the test, the measuring plate 11 is perpendicular to the first measuring arm 1, that is, the first measuring arm 1 is parallel to one side of the template to be measured. At this time, the angle between the measuring plate 11 and the reference frame 10 is 0°. During the test, the plane of the measuring plate 11 is against the other side of the template to be measured. At this time, the plane of the measuring plate 11 is parallel to the other side of the template to be measured, which then drives the measuring plate 11 to rotate, causing the measuring plate 11 to deflect around the center of the reference frame 10. This deflection angle is the inclination of the template to be measured, thereby obtaining the squareness of the template to be measured.

[0048] In this solution, it is preferred to set a first scale line 40 on the first measuring arm 1 and a second scale line 41 on the second measuring arm 3. The first scale line 40 is used to conveniently control the specific distance from the second measuring arm 3 to the template to be measured during adjustment, and the second scale line 41 is used to conveniently control the position of the reference frame 10 and the measuring plate 11 on the second measuring arm 3 during adjustment, thereby realizing multi-point detection on the same level. During the detection process, the template to be detected is separated from the second measuring arm 3, which can effectively prevent the second measuring arm 3 from being affected by the template to be detected, effectively prevent local deformation of the template to be detected from affecting the detection result, and improve the accuracy of the detection result.

[0049] like Figure 6 and Figure 11 As shown, to improve the accuracy of the squareness test results of the internal and external corner templates, the reference frame 10 provided in this embodiment has a frame-type structure, and observation windows 30 are symmetrically opened on both sides of the upper portion of the reference frame 10. In addition, to enable the detection of the internal corner template 13 and the external corner template 14, the measuring plate 11 provided in this embodiment is composed of two sets of semicircular protractors spliced together, and the sides of the two sets of protractors facing away from each other are flat. The symmetrically arranged protractors and flat surfaces can achieve bilateral detection of the measuring plate 11, that is, the two flat surfaces of the measuring plate 11 can respectively be abutted against the template to be tested, thereby enabling the detection of the internal corner template 13 and the external corner template 14. The scale lines on the protractor surface correspond to the observation windows 30. Preferably, a convex lens is installed inside the observation window 30 to magnify the scale on the measuring plate 11, thereby improving the convenience of reading the test results.

[0050] like Figure 11 and Figure 13As shown, in order to facilitate the rotation of the measuring plate 11, the reference frame 10 provided in this embodiment is rotatably connected to the measuring plate 11 via a third rotating shaft 32, and a sleeve 31 is fixed to the middle of the upper surface of the reference frame 10. Preferably, the measuring plate 11 is fixedly connected to the third rotating shaft 32, and the reference frame 10 is rotatably connected to the third rotating shaft 32. When the plane of the measuring plate 11 is subjected to thrust, it can rotate around the third rotating shaft 32 as the axis, thereby generating deflection relative to the reference frame 10.

[0051] To prevent the measuring plate 11 from shaking during reading, the upper end of the third rotating shaft 32 extends into the interior of the sleeve 31 and is fixed with a second magnet 39. A lifting column 34 is slidingly provided on the top of the sleeve 31. Preferably, the lifting column 34 is a prismatic structure to prevent the lifting column 34 from rotating. The lifting column 34 can slide along the axial direction of the sleeve 31, thereby realizing the lifting and lowering of the lifting column 34, and the lower end of the lifting column 34 extends into the interior of the sleeve 31 and is installed with a first magnet 38 that is magnetically attracted to the second magnet 39. By lowering the lifting column 34, the first magnet 38 and the second magnet 39 are magnetically attracted, so that the lifting column 34 can be locked. The effect of this magnetic locking is sufficient to prevent the measuring plate 11 from shaking, thereby realizing reading after the equipment is separated from the template to be measured, thereby improving the accuracy of the measurement results.

[0052] In addition, in order to separate the first magnet 38 from the second magnet 39, the upper end of the lifting column 34 extends out of the sleeve 31 and is fixed with a button 33. A return spring 35 is installed between the button 33 and the top of the sleeve 31. By pulling the button 33, the lifting column 34 is raised, thereby separating the first magnet 38 from the second magnet 39. Under the setting of the return spring 35, the lifting column 34 can be prevented from falling. It should be noted that after the first magnet 38 and the second magnet 39 are separated, the elastic force of the return spring 35 is sufficient to maintain the stability of the lifting column 34, which can effectively prevent the lifting column 34 from falling. When the first magnet 38 and the second magnet 39 are magnetically attracted, the elastic force of the return spring 35 is insufficient to drive the lifting column 34 to rise, so as to ensure the stability of the first magnet 38 and the second magnet 39 during magnetic attraction, thereby achieving readings after the equipment is separated from the template to be measured.

[0053] Furthermore, friction surfaces are provided at the bottom of the first magnet 38 and the top of the second magnet 39, or a plurality of slots and pins that are plugged into each other are provided at the bottom of the first magnet 38 and the top of the second magnet 39 to ensure that the first magnet 38 and the second magnet 39 are relatively stationary in the circumferential direction.

[0054] like Figure 11 and Figure 12As shown, since the measuring plate 11 is rotatably connected to the reference frame 10, it is difficult to reset the measuring plate 11 and it is not easy to keep it parallel to the reference frame 10. Although the present invention can realize the measurement of the squareness of the template to be measured without resetting the measuring plate 11, the shaking of the measuring plate 11 will affect the stability of the equipment when it is stored. Of course, the measuring plate 11 can also be manually locked by the first magnet 38 and the second magnet 39, but this method requires manual operation. For this reason, in the present invention, limiting grooves 37 are symmetrically provided on both sides of the outer wall of the third rotating shaft 32, and limiting spring plates 36 are symmetrically installed inside the sleeve 31. The limiting spring plates 36 are an arc-shaped structure that fits the inner wall of the sleeve 31, and its two ends are restricted on the inner wall of the sleeve 31, and the limiting spring plates 36 face the third rotating shaft 32. A C-shaped spring piece is provided on one side to match the limit groove 37. When the measuring plate 11 is parallel to the reference frame 10, the C-shaped spring piece is engaged with the limit groove 37. Through the deformation ability of the C-shaped spring piece, it can be embedded in the limit groove 37, thereby locking the third rotating shaft 32, thereby keeping the third rotating shaft 32 and the measuring plate 11 stable and preventing the measuring plate 11 from shaking when stored. When the third rotating shaft 32 rotates, the limit groove 37 pushes the C-shaped spring piece to deform so that the C-shaped spring piece is against the outer wall of the third rotating shaft 32, which is conducive to unlocking the third rotating shaft 32. In this process, the elastic potential energy of the C-shaped spring piece is released so that it applies a certain pressure to the third rotating shaft 32 to generate a certain amount of damping, thereby preventing the measuring plate 11 from being too flexible and improving the stability of the detection effect.

[0055] like Figure 2-Figure 8 As shown, in order to realize multi-point detection on a single plane, the second measuring arm 3 provided in this embodiment is slidably connected with a second slide 12, a transmission cavity 17 is provided inside the second slide 12, and a top plate 7 is fixed to the upper surface of the second slide 12. Preferably, the top plate 7 and the second slide 12 can be fixed by bolts or buckles. A first rotating shaft 8 is installed on the top plate 7, and the lower end of the first rotating shaft 8 extends into the transmission cavity 17. A spring 19 is installed between the first rotating shaft 8 and the second slide 12. The spring 19 is used to drive the first rotating shaft 8 to rotate. A connecting piece adapted to the reference frame 10 is installed on the outer side of the first rotating shaft 8. The first rotating shaft 8 is driven to rotate by the spring 19, so that the first rotating shaft 8 drives the reference frame 10 to move through the connecting piece, so that the reference frame 10 moves toward the far end of the second measuring arm 3 until the plane of the measuring plate 11 is against the template to be measured, thereby causing the measuring plate 11 to rotate under force, and then realizing the inclination detection of the template to be measured.

[0056] like Figure 6 and Figure 10As shown, the connecting member provided in this embodiment includes a telescopic rod 9 fixed to the upper end of the outer side of the first rotating shaft 8. It should be noted that the spring spring 19 is used to drive the first rotating shaft 8 to rotate, so as to drive the telescopic rod 9 on the first rotating shaft 8 and the reference frame 10 to move in a direction perpendicular to the second measuring arm 3. Preferably, the telescopic rod 9 is composed of a sleeve and a rod. One end of the rod is inserted into the sleeve and is slidably connected to the inner wall of the sleeve. This telescopic structure belongs to the prior art and will not be described in detail in this solution. In addition, the telescopic end of the telescopic rod 9 is rotatably connected to the outer wall of the sleeve 31. In addition, in order to prevent the reference frame 10 from being offset by the rotation of the telescopic rod 9, a guide slot 16 is provided on the upper surface of the top plate 7, and a guide frame 15 is slidably mounted on the guide slot 16. A first slider 28 is provided on the lower surface of the guide frame 15 for sliding movement. The lower part of the first slider 28 is slidably arranged in the guide slot 16. The first slider 28 is a square block. The first slider 28 can slide along the length direction of the guide frame 15 and the guide slot 16 respectively. A second slider 29 is slidably connected to the upper surface of the guide frame 15 along the length direction. The second slider 29 is fixedly connected to the bottom of the reference frame 10. Through the sliding connection between the first slider 28 and the guide frame 15 and the guide slot 16, the guide frame 15 can move linearly on the top plate 7. Through the sliding connection between the guide frame 15 and the second slider 29, the guidance of the reference frame 10 is realized, thereby ensuring the linear motion of the reference frame 10, thereby ensuring that the reference frame 10 is parallel to the second measuring arm 3.

[0057] like Figure 6-Figure 9 As shown, in order to realize the detection of the squareness of the internal angle template 13 and the external angle template 14, a ratchet 18 is installed at the lower end of the outer side of the first rotating shaft 8 provided in this embodiment, and a movable arm 22 is rotatably installed inside the transmission cavity 17, and a pawl 24 adapted to the ratchet 18 is provided at one end of the movable arm 22. There are two groups of movable arms 22, and the two groups of movable arms 22 are symmetrically arranged on both sides of the ratchet 18. By adjusting the movement of the two groups of movable arms 22, the position control of the corresponding pawl 24 is realized, and then the corresponding pawl 24 is controlled to separate from the ratchet 18, so as to realize the adjustment of the rotation direction of the ratchet 18.

[0058] In addition, a second rotating shaft 20 is rotatably installed inside the transmission chamber 17 and between the two groups of movable arms 22. A cam 21 is installed on the second rotating shaft 20. Grooves 23 that are adapted to the cam 21 are provided on the opposite surfaces of the two groups of movable arms 22. A notch 26 is provided at the bottom of the second slide 12. The lower end of the second rotating shaft 20 extends into the inside of the notch 26 and is installed with a shift plate 27. U-shaped spring sheets 25 are fixed on both sides of the inner wall of the transmission chamber 17. One end of the U-shaped spring sheet 25 is fixedly connected to the inner wall of the transmission chamber 17, and the other end of the U-shaped spring sheet 25 is fixedly connected to the movable arm 22 on the same side. The expansion of the U-shaped spring sheet 25 is used to drive the movable arm 22 to move toward the ratchet 18, thereby facilitating the resetting of the movable arm 22.

[0059] When in use, the second rotating shaft 20 is driven to rotate by the dial plate 27. The rotation of the second rotating shaft 20 causes the cam 21 to be embedded in the groove 23 to push the movable arm 22 to rotate. At this time, the U-shaped spring piece 25 is compressed. Since the cam 21 cooperates with the groove 23, the U-shaped spring piece 25 can be prevented from automatically expanding, thereby separating the pawl 24 from the ratchet 18, thereby achieving unlocking when the ratchet 18 rotates.

[0060] Specifically, when testing the squareness of the internal angle template 13, one side of the first measuring arm 1 is pressed against one side wall of the internal angle template 13, and the second rotating shaft 20 is driven to rotate by the dial plate 27, so that the cam 21 is embedded in one of the grooves 23 to push the movable arm 22 to rotate, so that the movable arm 22 is away from the ratchet 18, and further the pawl 24 on the movable arm 22 is separated from the ratchet 18. At this time, the measuring plate 11 is rotated to the position where it is pressed against the other side wall of the internal angle template 13, and the elastic potential energy of the clockwork spring 19 is used to rotate the first rotating shaft 8, thereby making the measuring plate 11 close to the internal angle template 13, so that the measuring plate 11 and the internal angle are aligned. The other side wall of the template 13 is tightly abutted. When the plane of the measuring plate 11 is thrust by the internal angle template 13, it can rotate about the third rotating shaft 32 as the axis, thereby generating a deflection relative to the reference frame 10. This deflection angle is the inclination of the template to be measured. Pressing the button 33 causes the first magnet 38 and the second magnet 39 to be magnetically attracted, thereby limiting the rotation of the third rotating shaft 32 and locking the position of the measuring plate 11, thereby obtaining the squareness of the template to be measured. By moving the position of the second slide 12 on the second measuring arm 3, the horizontal position of the reference frame 10 can be adjusted, thereby realizing multi-point detection on a single level and improving the accuracy of the detection results.

[0061] When testing the squareness of the external corner template 14, one side of the first measuring arm 1 is pressed against a side wall of the template 14. The second rotating shaft 20 is rotated via the shift plate 27 to switch the movable arm 22 into the locked state. At this point, the ratchet 18 can only rotate in the reverse direction. The elastic potential energy of the spring 19 causes the first rotating shaft 8 to rotate in the reverse direction, forcing the measuring plate 11 into close contact with the other side wall of the external corner template 14. When the measuring plate 11 is pushed by the external corner template 14, it can rotate about the third rotating shaft 32, thereby offsetting it from the reference frame 10. This deflection angle represents the inclination of the template to be tested. Pressing the button 33 causes the first magnet 38 and the second magnet 39 to attract, restricting the rotation of the third rotating shaft 32 and locking the position of the measuring plate 11. The squareness of the template to be tested can then be determined. By moving the second slide 12 on the second measuring arm 3, the horizontal position of the reference frame 10 can be adjusted, enabling multi-point testing on a single plane and improving the accuracy of the test results.

[0062] The clockwork spring 19 is initially in a normal state. When the measuring plate 11 is located on both sides of the second measuring arm 3 and measures the internal corner template 13 and the external corner template 14 respectively, the clockwork spring 19 is in a contracted and relaxed state, thereby being able to drive the first rotating shaft 8 to rotate forward or flip, respectively, to ensure that the plane of the measuring plate 11 fits the template to be tested.

[0063] like Figure 1-Figure 3 As shown, in this solution, a top corner block 6 is provided at one end of the first measuring arm 1. The top corner block 6 has an acute-angle structure so that one end of the top corner block 6 abuts against the internal corner of the internal corner template 13. Since the squareness of the internal corner template 13 is unknown, the top corner block 6 with an acute-angle structure abuts against the internal corner of the internal corner template 13, which can minimize the contact between the first measuring arm 1 and the other side wall of the internal corner template 13, thereby facilitating the use of the first measuring arm 1.

[0064] like Figures 1-6 As shown, in order to facilitate the movement of the second measuring arm 3, a first slide 2 is slidably connected in the length direction of the first measuring arm 1, the first slide 2 is hinged to one end of the second measuring arm 3, and the maximum rotation angle of the first slide 2 and the second measuring arm 3 is 90°, which is conducive to the second measuring arm 3 being perpendicular to the first measuring arm 1. Preferably, a through slot 4 is opened on the first measuring arm 1, and a handle 5 adapted to the through slot 4 is fixed at the upper end of the first slide 2 to facilitate manual pushing of the first slide 2 to move. When the first slide 2 moves to the position closest to the top angle block 6, the second measuring arm 3 is rotated so that it is parallel to the first measuring arm 1, thereby realizing the storage of the second measuring arm 3, reducing the storage space after the equipment is used, and improving the portability of the equipment.

[0065] Furthermore, the first measuring arm 1 has a slot-shaped structure, and the first slide 2 is slidably disposed within the first measuring arm 1. The second measuring arm 3 can be accommodated within the slot of the first measuring arm 1. When the second measuring arm 3 is perpendicular to the first measuring arm 1, one side of the second measuring arm 3 is precisely restrained by the first slide 2, and the first slide 2 is used to restrain the second measuring arm 3.

[0066] During use: one side of the first measuring arm 1 is pressed against a side wall of the template to be measured, and the second measuring arm 3 is pulled so that the second measuring arm 3 and the first measuring arm 1 are perpendicular to each other. The second rotating shaft 20 is driven to rotate by the dial plate 27, so that the cam 21 is embedded in one of the grooves 23 to push the movable arm 22 to rotate, so that the movable arm 22 is away from the ratchet 18, and further the pawl 24 on the movable arm 22 is separated from the ratchet 18. At this time, one plane of the measuring plate 11 is rotated to abut against the other side wall of the template to be measured. At this time, the spring 19 is in an energy storage state, and the elastic potential energy of the spring 19 is used to rotate the first rotating shaft 8, so that the plane of the measuring plate 11 is pressed against the other side wall of the template to be measured. The close contact and small contact area can prevent the rough surface of the template to be measured from affecting the test results. When the plane of the measuring plate 11 is pushed by the internal corner template 13, it rotates about the third rotating shaft 32 as the axis, thereby generating a deflection with the reference frame 10. This deflection angle is the inclination of the template to be measured. At this time, pressing the button 33 causes the first magnet 38 and the second magnet 39 to be magnetically attracted, thereby limiting the rotation of the third rotating shaft 32 to lock the position of the measuring plate 11, so that the squareness of the template to be measured can be obtained. By moving the position of the second slide 12 on the second measuring arm 3, the horizontal position of the reference frame 10 can be adjusted, thereby realizing multi-point detection on a single level and improving the accuracy of the test results.

[0067] On the other hand, the present invention also provides a method for detecting the squareness of a positive and negative corner template, comprising the following steps:

[0068] S1. Place one side of the first measuring arm 1 against a side wall of the template to be measured;

[0069] S2. Rotate the plane of the measuring plate 11 until it contacts the other side wall of the template to be measured, and use the elastic potential energy of the spring 19 to rotate the first rotating shaft 8, further making the measuring plate 11 contact the other side wall of the template to be measured tightly.

[0070] S3. When the plane of the measuring plate 11 is subjected to a thrust from the template to be measured, the measuring plate 11 rotates about the third rotation axis 32 and deviates from the reference frame 10 to obtain a deflection angle. This deflection angle is the inclination of the template to be measured, thereby obtaining the squareness of the template to be measured.

[0071] S4. Press the button 33 to attract the first magnet 38 and the second magnet 39, restricting the rotation of the third shaft 32 to lock the position of the measuring plate 11 and realize the reading of the deflection angle;

[0072] S5. Move the second slide 12 on the second measuring arm 3 and adjust the horizontal position of the reference frame 10 to achieve multi-point detection on a single level and improve the accuracy of the detection results.

Claims

1. A device for detecting squareness of yin and yang corner templates, characterized in that: include: A first measuring arm (1), one side of the first measuring arm (1) being in contact with the template to be measured; a second measuring arm (3), wherein in a measuring state, the second measuring arm (3) forms a 90° angle with the first measuring arm (1), and one end of the second measuring arm (3) is slidably arranged along the length direction of the first measuring arm (1); A reference frame (10), the reference frame (10) being located on one side of the second measuring arm (3), and the reference frame (10) and the second measuring arm (3) being always parallel; A measuring plate (11), wherein the measuring plate (11) is rotatably mounted on a reference frame (10), wherein a side of the measuring plate (11) close to the template to be measured is a plane, and the plane is in direct contact with the template to be measured, so that the rotation angle of the measuring plate (11) on the reference frame (10) represents the inclination of the template to be measured; The reference frame (10) is a frame-type structure, and observation windows (30) are symmetrically opened on both sides of the upper portion of the reference frame (10). The measuring plate (11) is composed of two groups of semicircular protractors spliced together, and the sides of the two groups of protractors that are away from each other are flat, and the scale lines on the protractor surfaces correspond to the observation windows (30); The reference frame (10) and the measuring plate (11) are rotatably connected via a third rotating shaft (32), and a sleeve (31) is fixed to the upper middle section of the reference frame (10); The upper end of the third rotating shaft (32) extends into the interior of the sleeve (31) and is fixed with a second magnet (39); a lifting column (34) is provided on the top of the sleeve (31); the lifting column (34) is slidably arranged along the axial direction of the sleeve (31); and the lower end of the lifting column (34) extends into the interior of the sleeve (31) and is installed with a first magnet (38) that is magnetically attracted to the second magnet (39); The upper end of the lifting column (34) extends out of the sleeve (31) and is fixed with a button (33), and a return spring (35) is installed between the button (33) and the top of the sleeve (31).

2. The device for detecting squareness of a yin-yang corner template according to claim 1, characterized in that: The outer wall of the third rotating shaft (32) is symmetrically provided with limiting grooves (37), and the inner part of the sleeve (31) is symmetrically provided with limiting spring pieces (36). The side of the limiting spring piece (36) facing the third rotating shaft (32) is provided with a C-shaped spring piece adapted to the limiting groove (37); When the measuring plate (11) is parallel to the reference frame (10), the C-shaped spring piece is engaged with the limiting groove (37).

3. A device for detecting squareness of a yin-yang corner template according to claim 2, characterized in that: A second slide (12) is slidably connected to the second measuring arm (3), a transmission cavity (17) is provided inside the second slide (12), and a top plate (7) is fixed to the upper surface of the second slide (12); A first rotating shaft (8) is mounted on the top plate (7), the lower end of the first rotating shaft (8) extends into the interior of the transmission cavity (17), and a spring (19) is mounted between the first rotating shaft (8) and the second slide seat (12), the spring (19) being used to drive the first rotating shaft (8) to rotate, and a connecting piece adapted to the reference frame (10) is mounted on the outer side of the first rotating shaft (8).

4. The device for detecting squareness of a yin-yang corner template according to claim 3, characterized in that: The connecting member comprises a telescopic rod (9) fixed to the upper end of the outer side of the first rotating shaft (8), and the telescopic end of the telescopic rod (9) is rotatably connected to the outer wall of the sleeve (31); A guide slot (16) is provided on the upper surface of the top plate (7), a guide frame (15) is slidably mounted on the guide slot (16), a first slider (28) is provided on the lower surface of the guide frame (15), the first slider (28) is slidably arranged along the length direction of the guide frame (15) and the guide slot (16), a second slider (29) is slidably connected to the upper surface of the guide frame (15) along the length direction, and the second slider (29) is fixedly connected to the reference frame (10).

5. The device for detecting squareness of a yin-yang corner template according to claim 4, characterized in that: A ratchet (18) is mounted on the lower end of the outer side of the first rotating shaft (8), a movable arm (22) is rotatably mounted inside the transmission cavity (17), and a pawl (24) adapted to the ratchet (18) is provided at one end of the movable arm (22), and the movable arms (22) are provided in two groups, and the two groups of movable arms (22) are symmetrically arranged on both sides of the ratchet (18); A second rotating shaft (20) is rotatably mounted inside the transmission cavity (17) between the two groups of movable arms (22), a cam (21) is mounted on the second rotating shaft (20), and grooves (23) adapted to the cam (21) are formed on the opposing surfaces of the two groups of movable arms (22); U-shaped spring pieces (25) are fixed on both sides of the inner wall of the transmission cavity (17), one end of the U-shaped spring piece (25) is fixedly connected to the inner wall of the transmission cavity (17), and the other end of the U-shaped spring piece (25) is fixedly connected to the movable arm (22) on the same side; The second rotating shaft (20) rotates to cause the cam (21) to be embedded in the groove (23), thereby pushing the movable arm (22) to rotate, compressing the U-shaped spring sheet (25) and separating the pawl (24) from the ratchet (18).

6. A device for detecting squareness of a yin-yang corner template according to any one of claims 1 to 5, characterized in that: A vertex block (6) is provided at one end of the first measuring arm (1), and the vertex block (6) is an acute-angle structure.

7. The device for detecting squareness of a yin-yang corner template according to claim 6, characterized in that: A first slide (2) is slidably connected to the first measuring arm (1) along the length direction. The first slide (2) is hinged to one end of the second measuring arm (3), and the maximum rotation angle between the first slide (2) and the second measuring arm (3) is 90°.

8. A method for detecting squareness of a yin-yang corner template according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, placing one side of the first measuring arm (1) against a side wall of the template to be measured; S2, rotating the plane on the measuring plate (11) until it abuts against the other side wall of the template to be measured, and using the elastic potential energy of the spring (19) to rotate the first rotating shaft (8), further making the measuring plate (11) tightly abut against the other side wall of the template to be measured; S3. When the plane of the measuring plate (11) is subjected to a thrust from the template to be measured, the measuring plate (11) rotates with the third rotating shaft (32) as the axis, and deflects from the reference frame (10) to obtain a deflection angle. This deflection angle is the inclination of the template to be measured, thereby obtaining the squareness of the template to be measured; S4, pressing the button (33) to cause the first magnet (38) and the second magnet (39) to be magnetically attracted to each other, thereby limiting the rotation of the third rotating shaft (32) to lock the position of the measuring plate (11) and achieve the reading of the deflection angle; S5. Move the second slide (12) on the second measuring arm (3), adjust the horizontal position of the reference frame (10), and realize multi-point detection on a single level, thereby improving the accuracy of the detection result.

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