Internal and external corner template squareness detection device and detection method

Abstract

The invention discloses an internal and external corner template squareness detection device and detection method, and relates to the technical field of squareness detection. The internal and external corner template squareness detection device comprises a first measuring arm, and one side of the first measuring arm abuts against a template to be detected; and the second measuring arm forms an included angle of 90 degrees with the first measuring arm in a 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 a to-be-measured template is directly quantified by using the rotation angle of a measuring plate; meanwhile, through the separated design of the second measuring arm and the to-be-measured template, the contact area of the second measuring arm and the to-be-measured template is greatly reduced, and the friction interference of the template surface roughness on a measuring part is effectively avoided, so that the accuracy of a squareness detection result is remarkably improved; and the influence of mechanical structure errors on detection results is eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of squareness detection, and specifically provides a device and method for detecting the squareness of internal and external corner formworks. Background Technique

[0002] In the construction of building formwork projects, the squareness of internal and external corner formworks directly affects the quality of concrete forming. Currently, for the construction of high-rise and super-high-rise buildings, concrete is usually cast in situ, and during the pouring process, the squareness of internal and external corner formworks will directly affect the squareness of the wall.

[0003] Chinese Utility Model Patent CN207600364U discloses a detection ruler for measuring the squareness of internal and external corners of a house. This device opens the telescopic rod and the main ruler to the maximum angle, and then the fixing component 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 component fixes the inner rod and the outer rod relative to each other; the telescopic rod can conveniently raise the main ruler and the movable ruler to a higher position, so as to facilitate the measurement of the squareness of internal and external corners at different heights.

[0004] In actual operation, the roughness of the surface of the template to be measured easily causes insufficient contact between the detection tool and the template. Especially when there are protrusions on the surface of the template, it will significantly hinder the complete fitting of the measuring tool and the template, ultimately resulting in measurement deviation of the squareness data of the internal and external corners. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a device and method for detecting the squareness of internal and external corner formworks, which solves the problems raised in the background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: On the one hand, the present invention provides a device for detecting the squareness of internal and external corner formworks, including: A first measuring arm, one side of which abuts against the template to be measured; 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 is slidably arranged along the length direction of the first measuring arm; A reference frame, which is located on one side of the second measuring arm and is always parallel to the second measuring arm; A measuring plate, which is rotatably arranged on the reference frame. The side of the measuring plate close to the template to be measured is a plane, and the plane 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.

[0007] Further, the reference frame is of a frame structure, and observation windows are symmetrically arranged on both sides of the upper part of the reference frame. The measuring plate is composed of two semicircular protractors spliced together. The sides of the two protractors away from each other are planes, and the scale lines on the surface of the protractor correspond to the observation windows.

[0008] Further, the reference frame and the measuring plate are rotatably connected through a third rotating shaft, and a sleeve is fixed in the middle section of the reference frame; the upper end of the third rotating shaft extends into the sleeve and is fixed with a second magnet. A lifting column is arranged at 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 sleeve and is installed with a first magnet 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 return spring is installed between the button and the top of the sleeve.

[0009] Further, limiting grooves are symmetrically arranged on both sides of the outer wall of the third rotating shaft, and limiting elastic sheets are symmetrically installed inside the sleeve. A C-shaped elastic sheet adapted to the limiting groove is arranged on the side of the limiting elastic sheet facing the third rotating shaft; when the measuring plate is parallel to the reference frame, the C-shaped elastic sheet is engaged with the limiting groove.

[0010] Further, a second sliding seat is slidably connected to the second measuring arm. A transmission cavity is arranged inside the second sliding seat, and a top plate is fixed on the upper surface of the second sliding seat; 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 sliding seat. 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.

[0011] Further, the connecting piece includes a telescopic rod fixed to the outer side of the upper end of the first rotating shaft. The telescopic end of the telescopic rod is rotatably connected to the outer wall of the sleeve; a guiding chute is arranged on the upper surface of the top plate, and a guiding frame is slidably installed on the guiding chute. A first slider is arranged on the lower surface of the guiding frame and is slidably arranged along the length directions of the guiding frame and the guiding chute. A second slider is slidably connected to the upper surface of the guiding frame along the length direction, and the second slider is fixedly connected to the reference frame.

[0012] Furthermore, a ratchet is installed at the lower end of the outer side of the first rotating shaft, a movable arm is rotatably installed inside the transmission cavity, and a pawl matched with 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, a cam is installed on the second rotating shaft, and grooves matched with 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, so that the U-shaped spring sheet is compressed and the pawl is separated from the ratchet.

[0013] Furthermore, a vertex block is provided at one end of the first measuring arm, and the vertex block is an acute-angle structure.

[0014] Furthermore, a first slide is slidably connected in the first measuring arm along the length direction, 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°.

[0015] On the other hand, the present invention also provides a detection method of a positive and negative corner template squareness detection device, comprising the following steps: S1, placing one side of the first measuring arm against one side wall of the template to be measured; S2, rotating the plane on the measuring plate until it abuts against the other side wall of the template to be measured, and using the elastic potential energy of the spring to rotate the first rotating shaft, so that the measuring plate and the other side wall of the template to be measured are closely abutted; S3. When the plane of the measuring plate is pushed by the template to be measured, the measuring plate rotates with the third axis as the axis, and deviates from the reference frame to obtain a deflection angle. This deflection angle is the inclination of the template to be measured, so that the squareness of the template to be measured can be obtained; S4, pressing the button to make the first magnet and the second magnet magnetically attract each other, restricting the rotation of the third shaft to lock the position of the measuring plate and realize the reading of the deflection angle; S5. Move the position of 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.

[0016] The present invention has the following beneficial effects: (1)The squareness detection device and method for the internal and external corner formwork are based on the structural design of the combination of a semi-circular protractor and a plane, and directly quantify the inclination of the formwork to be measured by the rotation angle of the measuring plate. At the same time, through the separated design of the second measuring arm and the formwork to be measured, the contact area between the two is greatly reduced, effectively avoiding the friction interference of the surface roughness of the formwork on the measuring components, 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 mechanical structure errors on the detection result is eliminated.

[0017] (2)The squareness detection device and method for the internal and external corner formwork drive the reference frame to move horizontally by sliding the second sliding seat along the second measuring arm, realizing horizontal multi-point detection on a single layer and comprehensively evaluating the deviation distribution of the formwork squareness.

[0018] (3)The squareness detection device and method for the internal and external corner formwork realize one-key locking of the measurement position through the magnetic attraction between the first magnet and the second magnet, reducing manual intervention. At the same time, the elastic potential energy of the clockwork spring is used to drive the reference frame to linearly move along the direction of the second measuring arm, forcing the plane of the measuring plate to form a stable contact with the formwork to be measured, and triggering the adaptive offset of the measuring plate around the third rotating shaft through the reaction force of the formwork to be measured, accurately obtaining the deflection angle data, and finally realizing the efficient and automatic detection of the squareness of the internal and external corner formwork.

[0019] Of course, it is not necessary for any product implementing the present invention to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention when being stored; Figure 2 is a schematic diagram of the present invention when applied to the squareness detection of the internal corner formwork; Figure 3 In the present invention Figure 2 is a top view; Figure 4 is a schematic diagram of the present invention when applied to the squareness detection of the external corner formwork; Figure 5 In the present invention Figure 4 is a top view; Figure 6 is a schematic installation structure diagram of the reference frame in the present invention; Figure 7 is a schematic internal structure diagram of the transmission cavity in the present invention; Figure 8 In the present invention Figure 7 is a top view; Figure 9 is a schematic bottom structure diagram of the second sliding seat in the present invention; Figure 10It is a schematic diagram of the installation structure of the guide frame in the present invention; Figure 11 It is a schematic diagram of the connection structure between the protractor and the reference frame in the present invention; Figure 12 It is a schematic diagram of the limiting structure of the third rotating shaft in the present invention; Figure 13 For the present invention Figure 11 main view.

[0021] 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, inner angle template; 14, outer angle template; 15, guide frame; 16, guide slide; 17, transmission chamber; 18, ratchet; 19, spring; 20, second rotating shaft; 21, cam ; 22. movable arm; 23. groove; 24. pawl; 25. U-shaped spring sheet; 26. notch; 27. dial plate; 28. first slider; 29. ​​second slider; 30. observation window; 31. sleeve; 32. third rotating shaft; 33. button; 34. lifting column; 35. reset spring; 36. limiting spring; 37. limiting groove; 38. first magnet; 39. second magnet; 40. first scale line; 41. second scale line. DETAILED DESCRIPTION

[0022] According to the following Figures 1 - 13 The present invention describes a device and method for detecting squareness of a positive and negative corner template provided by an embodiment of the present invention.

[0023] On the one hand, see Figures 1 - 13 The 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, so that the first measuring arm 1 forms a reference plate. In the 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 can slide along the length direction of the first measuring arm 1. Preferably, the first measuring arm 1 and the second measuring arm 3 are both brass components, which have excellent properties such as corrosion resistance, wear resistance, and non-deformation, and can better adapt to the measurement environment. The first measuring arm 1 and the second measuring arm 3 can also be made of hard plastic.

[0024] In addition, to implement the squareness detection of the inner and outer corner formworks, this embodiment further includes a reference frame 10. The reference frame 10 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 installed in the reference frame 10. The side of the measuring plate 11 close to the formwork to be measured is a plane, and this plane can directly contact the formwork to be measured. The inclination of the formwork to be measured is characterized by the rotation angle of the measuring plate 11 on the reference frame 10. Specifically, at the start of the detection, 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 formwork to be measured. At this time, the included angle between the measuring plate 11 and the reference frame 10 is 0°. During the detection process, the plane of the measuring plate 11 abuts against the other side of the formwork to be measured. At this time, the plane of the measuring plate 11 is parallel to the other side of the formwork to be measured. Then, the measuring plate 11 is pushed to rotate, so that the measuring plate 11 deflects around the center of the reference frame 10. This deflection angle is the inclination of the formwork to be measured, and thus the squareness of the formwork to be measured can be obtained.

[0025] In this solution, preferably, a first scale line 40 is provided on the first measuring arm 1, and a second scale line 41 is provided on the second measuring arm 3. The first scale line 40 is convenient for controlling the specific distance from the second measuring arm 3 to the formwork to be measured during adjustment, and the second scale line 41 is convenient for controlling the positions of the reference frame 10 and the measuring plate 11 on the second measuring arm 3 during adjustment. Thus, multi-point detection on the same plane can be realized. During the detection process, the formwork to be measured is separated from the second measuring arm 3, which can effectively prevent the second measuring arm 3 from being affected by the formwork to be measured, effectively prevent local deformation of the formwork to be measured from affecting the detection result, and improve the accuracy of the detection result.

[0026] As Figure 6 and Figure 11 shown, to improve the accuracy of the squareness detection result of the inner and outer corner formworks, the reference frame 10 provided in this embodiment is of a frame structure, and observation windows 30 are symmetrically opened on both sides of the upper part of the reference frame 10. In addition, to implement the detection of the inner corner formwork 13 and the outer corner formwork 14, the measuring plate 11 provided in this embodiment is composed of two groups of semi-circular protractors spliced together. The sides of the two groups of protractors away from each other are planes. Through the symmetrically arranged protractors and planes, bilateral detection of the measuring plate 11 can be realized, that is, the two planes of the measuring plate 11 can respectively abut against the formwork to be measured, so as to implement the detection of the inner corner formwork 13 and the outer corner formwork 14. And the scale lines on the surface of the protractor correspond to the observation windows 30. Preferably, a convex lens is installed inside the observation windows 30 to magnify the scale on the measuring plate 11 to improve the convenience of reading the detection result.

[0027] As Figure 11 and Figure 13As shown, for the convenience of measuring plate 11 rotation, in this embodiment, the reference frame 10 and the measuring plate 11 are rotatably connected through a third rotating shaft 32, and a sleeve 31 is fixed in 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 a thrust is applied to the plane of the measuring plate 11, it can rotate around the third rotating shaft 32 as the axis, so as to deflect relative to the reference frame 10.

[0028] To avoid the measuring plate 11 shaking during reading, the upper end of the third rotating shaft 32 extends into the sleeve 31 and is fixed with a second magnet 39. A lifting column 34 is slidably arranged on the top of the sleeve 31. Preferably, the lifting column 34 is a prism structure to prevent the lifting column 34 from rotating. The lifting column 34 can slide along the axial direction of the sleeve 31, so as to realize the lifting of the lifting column 34. And the lower end of the lifting column 34 extends into the sleeve 31 and is installed with a first magnet 38 magnetically attracted to the second magnet 39. By lowering the lifting column 34 to make the first magnet 38 magnetically attracted to the second magnet 39, the locking of the lifting column 34 can be realized. The effect of this magnetic attraction locking is sufficient to avoid the shaking of the measuring plate 11, so that the reading can be realized after the device is separated from the template to be measured, and the accuracy of the measurement result is improved.

[0029] In addition, 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 to make the lifting column 34 rise, the first magnet 38 and the second magnet 39 are separated. With the setting of the return spring 35, the lowering of the lifting column 34 can be avoided. 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, and the lowering of the lifting column 34 can be effectively avoided. When the first magnet 38 and the second magnet 39 are magnetically attracted, the elastic force of the return spring 35 is not enough to drive the lifting column 34 to rise, so as to ensure the stability when the first magnet 38 and the second magnet 39 are magnetically attracted, and thus the reading after the device is separated from the template to be measured is realized.

[0030] Furthermore, friction surfaces are arranged at the bottom of the first magnet 38 and the top of the second magnet 39, or a plurality of slots and pins inserted into each other are respectively arranged 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.

[0031] Such as 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 squareness of the template to be measured can be measured without resetting the measuring plate 11 in this solution, the shaking of the measuring plate 11 will affect the stability during the storage of the device. 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. Therefore, in this solution, limiting grooves 37 are symmetrically formed on both outer sides of the outer wall of the third rotating shaft 32, and limiting elastic pieces 36 are symmetrically installed inside the sleeve 31. The limiting elastic piece 36 is 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. A C-shaped elastic piece adapted to the limiting groove 37 is provided on the side of the limiting elastic piece 36 facing the third rotating shaft 32. When the measuring plate 11 is parallel to the reference frame 10, the C-shaped elastic piece is engaged with the limiting groove 37. Through the deformation ability of the C-shaped elastic piece, it can be embedded into the limiting groove 37 to lock the third rotating shaft 32, so as to keep the third rotating shaft 32 and the measuring plate 11 stable and prevent the measuring plate 11 from shaking during storage. When the third rotating shaft 32 rotates, the limiting groove 37 pushes the C-shaped elastic piece to deform, so that the C-shaped elastic piece abuts against the outer wall of the third rotating shaft 32, which is beneficial to unlocking the third rotating shaft 32. During this process, the elastic potential energy of the C-shaped elastic piece is released to apply a certain pressure to the third rotating shaft 32 to generate a certain damping, so as to prevent the measuring plate 11 from being too flexible and improve the stability of the detection effect.

[0032] As Figures 2 - 8 shown, to achieve multi-point detection on a single plane, a second sliding seat 12 is slidably connected to the second measuring arm 3 provided in this embodiment. A transmission cavity 17 is provided inside the second sliding seat 12, and a top plate 7 is fixed on the upper surface of the second sliding seat 12. Preferably, the top plate 7 and the second sliding seat 12 can be fixed by bolts or buckles. A first rotating shaft 8 is installed on the top plate 7. The lower end of the first rotating shaft 8 extends into the transmission cavity 17, and a clockwork spring 19 is installed between the first rotating shaft 8 and the second sliding seat 12. The clockwork spring 19 is used to drive the first rotating shaft 8 to rotate. A connecting member adapted to the reference frame 10 is installed on the outside of the first rotating shaft 8. By driving the first rotating shaft 8 to rotate through the clockwork spring 19, the first rotating shaft 8 drives the reference frame 10 to move through the connecting member, so that the reference frame 10 moves towards the far end of the second measuring arm 3 until the plane of the measuring plate 11 abuts against the template to be measured, so that the measuring plate 11 rotates under force, and then the inclination of the template to be measured is detected.

[0033] As Figure 6 and Figure 10As shown in the figure, the connecting piece provided in this embodiment includes a telescopic rod 9 fixed to the upper outer side of the first rotating shaft 8. It should be noted that the clockwork spring 19 is used to drive the rotation of the first rotating shaft 8, 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 an inserting sleeve and an inserting rod. One end of the inserting rod is inserted into the inside of the inserting sleeve and is slidably connected to the inner wall of the inserting sleeve. This telescopic structure belongs to the prior art and will not be elaborated 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, to prevent the reference frame 10 from being offset due to the rotation of the telescopic rod 9, a guiding chute 16 is provided on the upper surface of the top plate 7. A guiding frame 15 is slidably installed on the guiding chute 16. A first slider 28 is slidably provided on the lower surface of the guiding frame 15. The lower part of the first slider 28 is slidably arranged in the guiding chute 16. The first slider 28 is a square block, and the first slider 28 can slide along the length directions of the guiding frame 15 and the guiding chute 16 respectively. A second slider 29 is slidably connected to the upper surface of the guiding 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 guiding frame 15 and the guiding chute 16, the guiding frame 15 can move linearly on the top plate 7. Through the sliding connection between the guiding frame 15 and the second slider 29, the guiding of the reference frame 10 is realized, so as to ensure the linear movement of the reference frame 10, and thus ensure that the reference frame 10 is parallel to the second measuring arm 3.

[0034] As Figures 6 - 9 shown in the figure, in order to realize the detection of the squareness of the internal corner formwork 13 and the external corner formwork 14, a ratchet wheel 18 is installed at the lower outer side of the first rotating shaft 8 provided in this embodiment. An activity arm 22 is rotatably installed inside the transmission cavity 17, and a pawl 24 adapted to the ratchet wheel 18 is provided at one end of the activity arm 22. There are two groups of activity arms 22, and the two groups of activity arms 22 are symmetrically arranged on both sides of the ratchet wheel 18. By adjusting the activities of the two groups of activity arms 22, the position control of the corresponding pawls 24 is realized, and then the separation of the corresponding pawls 24 from the ratchet wheel 18 is controlled, so as to realize the adjustment of the rotation direction of the ratchet wheel 18.

[0035] In addition, a second rotating shaft 20 is rotatably installed inside the transmission cavity 17 between the two groups of activity arms 22. A cam 21 is installed on the second rotating shaft 20. Grooves 23 adapted to the cam 21 are provided on the opposite surfaces of the two groups of activity arms 22. A notch 26 is provided at the bottom of the second sliding seat 12. The lower end of the second rotating shaft 20 extends into the notch 26 and a dial 27 is installed. 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 activity arm 22 on the same side. The relaxation of the U-shaped spring piece 25 is used to drive the activity arm 22 to move towards the ratchet wheel 18, which is beneficial to the reset of the activity arm 22.

[0036] Among them, 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 inside 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, it can prevent the U-shaped spring piece 25 from automatically relaxing, so that the pawl 24 is separated from the ratchet wheel 18, realizing the unlocking when the ratchet wheel 18 rotates.

[0037] Specifically, when detecting the squareness of the internal corner formwork 13, one side of the first measuring arm 1 is abutted against one side wall of the internal corner formwork 13. The second rotating shaft 20 is driven to rotate by the dial plate 27, so that the cam 21 is embedded inside one of the grooves 23 to push the movable arm 22 to rotate, making the movable arm 22 away from the ratchet wheel 18, and further separating the pawl 24 on the movable arm 22 from the ratchet wheel 18. At this time, the measuring plate 11 is rotated to abut against the other side wall of the internal corner formwork 13. Using the elastic potential energy of the hairspring 19, the first rotating shaft 8 rotates, and then the measuring plate 11 approaches the internal corner formwork 13, so that the measuring plate 11 abuts tightly against the other side wall of the internal corner formwork 13. When the plane of the measuring plate 11 is pushed by the internal corner formwork 13, it can rotate around the third rotating shaft 32, thus deflecting from the reference frame 10. This deflection angle is the inclination of the template to be measured. Press the button 33 to make the first magnet 38 magnetically attracted to the second magnet 39, thereby restricting 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 sliding seat 12 on the second measuring arm 3, the horizontal position of the reference frame 10 can be adjusted, so as to realize multi-point detection on a single plane and improve the accuracy of the detection result.

[0038] When detecting the squareness of the external corner formwork 14, one side of the first measuring arm 1 is abutted against one side wall of the external corner formwork 14. The second rotating shaft 20 is driven to rotate by the dial plate 27 to switch the locking state of the movable arm 22. At this time, the ratchet wheel 18 can only rotate in the reverse direction. Using the elastic potential energy of the hairspring 19, the first rotating shaft 8 rotates in the reverse direction, so that the measuring plate 11 abuts tightly against the other side wall of the external corner formwork 14. When the plane of the measuring plate 11 is pushed by the external corner formwork 14, it can rotate around the third rotating shaft 32, thus offsetting from the reference frame 10. This deflection angle is the inclination of the template to be measured. Press the button 33 to make the first magnet 38 magnetically attracted to the second magnet 39, thereby restricting 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 sliding seat 12 on the second measuring arm 3, the horizontal position of the reference frame 10 can be adjusted, so as to realize multi-point detection on a single plane and improve the accuracy of the detection result.

[0039] The clockwork spring 19 is initially in a normal state. When the measuring plate 11 is respectively located on both sides of the second measuring arm 3 and measures the inner corner template 13 and the outer corner template 14 respectively, the clockwork spring 19 is respectively in two states of contraction and relaxation, and can then drive the first rotating shaft 8 to rotate forward or reverse respectively to ensure that the plane of the measuring plate 11 fits the template to be detected.

[0040] As Figures 1 - 3 shown, in this solution, a vertex block 6 is provided at one end of the first measuring arm 1. The vertex block 6 has an acute angle structure, so that one end of the vertex block 6 abuts against the inner corner of the inner corner template 13. Since the squareness of the inner corner template 13 is unknown, by using the vertex block 6 with an acute angle structure to abut against the inner corner of the inner corner template 13, the contact between the first measuring arm 1 and the other side wall of the inner corner template 13 can be minimized to the greatest extent, which is beneficial to the use of the first measuring arm 1.

[0041] As Figures 1 - 6 shown, for the convenience of the movement of the second measuring arm 3, a first sliding seat 2 is slidably connected in the first measuring arm 1 along the length direction. The first sliding seat 2 is hinged to one end of the second measuring arm 3, and the maximum rotation angle between the first sliding seat 2 and the second measuring arm 3 is 90°. Thus, it is beneficial for the second measuring arm 3 to be perpendicular to the first measuring arm 1. Preferably, a through groove 4 is provided on the first measuring arm 1, and a handle 5 adapted to the through groove 4 is fixed at the upper end of the first sliding seat 2 to facilitate manually pushing the first sliding seat 2 to move. When the first sliding seat 2 moves to the position closest to the vertex block 6, rotate the second measuring arm 3 to make it parallel to the first measuring arm 1, so as to realize the storage of the second measuring arm 3, reduce the storage space after the equipment is used, and improve the portability of the equipment.

[0042] Furthermore, the first measuring arm 1 has a groove structure, the first sliding seat 2 is slidably arranged in the first measuring arm 1, and the second measuring arm 3 can be stored in the groove structure 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 just limited on the first sliding seat 2, and the first sliding seat 2 is relied on to limit the second measuring arm 3.

[0043] During use: Press one side of the first measuring arm 1 against one side wall of the template to be measured, and pull the second measuring arm 3 to make the second measuring arm 3 perpendicular to the first measuring arm 1. Drive the second rotating shaft 20 to rotate through the dial plate 27, so that the cam 21 is embedded inside one of the grooves 23 to push the movable arm 22 to rotate, making the movable arm 22 move away from the ratchet wheel 18, and further separating the pawl 24 on the movable arm 22 from the ratchet wheel 18. At this time, rotate one plane of the measuring plate 11 to the position where it abuts against the other side wall of the template to be measured. At this time, the clockwork spring 19 is in an energy storage state. Utilize the elastic potential energy of the clockwork spring 19 to make the first rotating shaft 8 rotate, so that the plane of the measuring plate 11 closely abuts against the other side wall of the template to be measured. This small contact area can prevent the rough surface of the template to be measured from affecting the detection result. When the plane of the measuring plate 11 is subjected to the thrust of the internal corner template 13, it rotates around the third rotating shaft 32 as the axis, thus deflecting from the reference frame 10. This deflection angle is the inclination of the template to be measured. At this time, press the button 33 to make the first magnet 38 magnetically attract the second magnet 39, thereby restricting 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 sliding seat 12 on the second measuring arm 3, the horizontal position of the reference frame 10 can be adjusted, so as to realize multi-point detection on a single layer and improve the accuracy of the detection result.

[0044] On the other hand, the present invention also provides a method for detecting the squareness of internal and external corner templates, including the following steps: S1. Press one side of the first measuring arm 1 against one side wall of the template to be measured; S2. Rotate the plane on the measuring plate 11 to the position where it abuts against the other side wall of the template to be measured, and utilize the elastic potential energy of the clockwork spring 19 to make the first rotating shaft 8 rotate, further making the measuring plate 11 closely abut against the other side wall of the template to be measured; S3. When the plane of the measuring plate 11 is subjected to the thrust of the template to be measured, the measuring plate 11 rotates around 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, so that the squareness of the template to be measured can be obtained; S4. Press the button 33 to make the first magnet 38 magnetically attract the second magnet 39, restrict the rotation of the third rotating shaft 32, and lock the position of the measuring plate 11 to realize the reading of the deflection angle; S5. Move the position of the second sliding seat 12 on the second measuring arm 3, adjust the horizontal position of the reference frame 10, realize multi-point detection on a single layer, and improve the accuracy of the detection result.

Claims

1. A device for detecting squareness of a positive and negative corner template, 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) is rotatably mounted on a reference frame (10); a side of the measuring plate (11) close to the template to be measured is a plane, the plane directly contacts 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.

2. A device for detecting squareness of a positive and negative corner template according to claim 1, characterized in that: The reference frame (10) is a frame-type structure, and observation windows (30) are symmetrically provided 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, the sides of the two groups of protractors that are away from each other are flat, and the scale lines on the surfaces of the protractors correspond to the observation windows (30).

3. A device for detecting squareness of a positive and negative corner template according to claim 2, characterized in that: 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).

4. The device for detecting squareness of a positive and negative corner template according to claim 3, characterized in that: The third rotating shaft (32) has symmetrically disposed limiting grooves (37) on both sides of its outer wall, the sleeve (31) has symmetrically mounted limiting spring pieces (36) inside, and the limiting spring piece (36) is provided with a C-shaped spring piece adapted to the limiting groove (37) on one side facing the third rotating shaft (32); When the measuring plate (11) is parallel to the reference frame (10), the C-shaped spring piece is engaged with the limiting groove (37).

5. A device for detecting squareness of a positive and negative corner template according to claim 4, characterized in that: A second slide seat (12) is slidably connected to the second measuring arm (3), a transmission cavity (17) is provided inside the second slide seat (12), and a top plate (7) is fixed to the upper surface of the second slide seat (12); A first rotating shaft (8) is mounted on the top plate (7), the lower end of the first rotating shaft (8) extending into the interior of the transmission cavity (17), 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).

6. A device for detecting squareness of a positive and negative corner template according to claim 5, 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).

7. The device for detecting squareness of a positive and negative corner template according to claim 6, 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 ratchet 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) and 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 opposite surfaces of the two groups of movable arms (22); 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 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 wheel (18).

8. A device for detecting squareness of a positive and negative corner template according to any one of claims 1 to 7, 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.

9. The device for detecting squareness of a positive and negative corner template according to claim 8, characterized in that: A first slide seat (2) is slidably connected in the length direction of the first measuring arm (1); the first slide seat (2) is hinged to one end of the second measuring arm (3); and the maximum rotation angle between the first slide seat (2) and the second measuring arm (3) is 90°.

10. A detection method for the squareness detection device of the internal and external corner templates according to any one of claims 1 to 9, 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), so as to further make 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 around the third rotating shaft (32) and deviates from the reference frame (10) to obtain a deflection angle, and the 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) so that the first magnet (38) and the second magnet (39) are attracted to each other, thereby limiting the rotation of the third rotating shaft (32) to lock the position of the measuring plate (11) and realize the reading of the deflection angle; S5. Move the position of the second slide (12) on the second measuring arm (3), adjust the horizontal position of the reference frame (10), realize multi-point detection on a single plane, and improve the accuracy of the detection result.

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