House building wall flatness measuring device

Abstract

The invention relates to the technical field of flatness measuring devices, in particular to a house building wall flatness measuring device. Comprising two shells, the two shells are rotationally connected, first sliding rails which are symmetrically distributed are fixedly connected in the shells, measuring rulers are arranged in the shells, sliding columns which are symmetrically distributed are fixedly connected to the measuring rulers, one shell is rotationally connected with a connecting buckle, and the other shell is in threaded connection with a bolt. The bolt is used for fixing the connecting buckle, a positioning piece is hinged to the shell, and the measuring scale is rotationally connected with a rotating plate. When the flatness of a wall surface is not measured, the measuring scale is stored in the shell, so that the measuring scale is protected, the probability that the device is damaged in the moving or storing process is reduced, meanwhile, when the device is used, the measuring scale automatically extends out of the shell, and additional operation is not needed when the device is used.

Description

Technical Field

[0001] The present invention relates to the technical field of flatness measurement devices, and particularly to a flatness measurement device for the wall surface of a building. Background Art

[0002] A wall surface flatness measurement device is a tool or equipment used to detect whether the wall surface, floor surface or other flat surfaces are flat. It is commonly used in fields such as construction, decoration, and project acceptance. The commonly used flatness measurement device in engineering is a straightedge. Its principle is: by closely attaching the straightedge to the wall surface, observing the size of the gap between the ruler and the wall surface, or judging whether it is horizontal by means of the bubble on the straightedge; the wedge-shaped feeler gauge is used in conjunction with the straightedge. Its principle is: inserting the feeler gauge into the gap between the straightedge and the wall surface and reading the width of the gap through the scale.

[0003] During the long-term use of the straightedge and the feeler gauge, we found that when the existing straightedge is in use, the part of the straightedge body in contact with the wall surface is always in an exposed state. During use, storage, and movement, it is very easy to cause damage to the straightedge when an accidental collision occurs, resulting in pits, protrusions or an overall undetected bend of the straightedge. These situations will make the measurement result of the straightedge inaccurate and affect normal use.

[0004] Based on this, we have proposed a flatness measurement device for the wall surface of a building. Summary of the Invention

[0005] In order to overcome the disadvantages mentioned in the above background art, the present invention provides a flatness measurement device for the wall surface of a building.

[0006] The technical implementation solution of the present invention is: a flatness measurement device for the wall surface of a building, including two outer shells, the two outer shells are rotatably connected, symmetrically distributed first slide rails are fixedly connected inside the outer shells, a measuring ruler is arranged inside the outer shells, the two measuring rulers are pressed against each other, symmetrically distributed sliding columns are fixedly connected to the measuring ruler, the sliding columns are slidably connected to the adjacent first slide rails, a connecting buckle is rotatably connected to one of the outer shells, a bolt is threadedly connected to the other outer shell, the bolt is used to fix the connecting buckle, a positioning member is hinged to the outer shell, a rotating plate is rotatably connected to the measuring ruler, the rotating plate is slidably connected to the adjacent positioning member, and a first spring is arranged between the two.

[0007] As a further preferred solution, a sliding member is slidably connected to one of the outer shells, a fixed shell is fixedly connected to the sliding member, a first cavity is arranged in the fixed shell, a sliding rod is slidably connected in the first cavity, and a second spring is arranged between the sliding rod and the fixed shell.

[0008] As a further preferred solution, the sliding rod is rotatably connected with a roller, and the roller is used to reduce the friction between the sliding rod and the wall surface.

[0009] As a further preferred solution, the fixed shell is provided with a second cavity, the second cavity is communicated with the first cavity, a sliding block is slidably connected in the second cavity, a connecting rod passing through the fixed shell is fixedly connected to the sliding block, a scale is fixedly connected to the connecting rod, the scale is slidably connected to the fixed shell, and liquids are filled in both the second cavity and the first cavity.

[0010] As a further preferred solution, one of the outer shells is fixedly connected with a main protection shell, the main protection shell is fixedly connected with symmetrically distributed second slide rails, the symmetrically distributed second slide rails are jointly slidably connected with a sub-protection shell, and the sub-protection shell and the roller are mutually extruded.

[0011] As a further preferred solution, the second slide rail is provided with a plurality of limiting strips, and the limiting strips are used to limit the sub-protection shell.

[0012] As a further preferred solution, the measuring scale is provided with an arc portion for mutually extruding the two measuring scales.

[0013] As a further preferred solution, the upper side of the measuring scale is higher than the lower side of the sliding member, and the length of the maximum distance that the measuring scale moves along the first slide rail in the vertical direction is greater than the vertical distance between the upper side of the measuring scale and the lower side of the sliding member.

[0014] As a further preferred solution, both the positioning member and the first slide rail are inclined, and the inclination angle of the positioning member is the same as the inclination angle of the first slide rail.

[0015] As a further preferred solution, the length of the projection of the maximum distance that the measuring scale moves along the first slide rail on the horizontal plane is equal to the length of the measuring scale extending out of the outer shell.

[0016] The present invention has the following advantages: when the flatness of the wall surface is not measured, the measuring scale is retracted into the outer shell, so as to protect the measuring scale and reduce the probability of damage to the device during movement or storage. At the same time, when the device is used, the measuring scale automatically extends out of the outer shell, and no additional operation is required when using the device.

[0017] The gap between the wall surface and the measuring scale is measured by the sliding rod. The contact area between the roller and the wall surface is smaller than that of the existing feeler gauge, thus avoiding the disadvantage that the feeler gauge is more easily affected by the wall inclination, and making the measurement of the gap by the device more accurate than that by the feeler gauge.

[0018] By making the upper side of the measuring ruler higher than the lower side of the sliding member, the sliding member will not slide out of the housing when the device is not in use. At the same time, when in use, the measuring ruler is moved downward to release the block on the sliding member, enabling the sliding member to slide freely between the two housings.

[0019] The scale and the roller are protected by the main protective shell and the secondary protective shell, thereby reducing the probability of damage to the scale and the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the connecting buckle and the bolt of the present invention;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the housing and the measuring ruler of the present invention;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the positioning member and the rotating plate of the present invention;

[0024] Figure 5 It is an exploded view of the housing and the measuring ruler of the present invention;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the sliding member and the fixed shell of the present invention;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the fixed shell and the sliding rod of the present invention;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the second slide rail and the secondary protective shell of the present invention;

[0028] Figure 9 It is a three-dimensional structural schematic diagram of the secondary protective shell and the limiting strip of the present invention.

[0029] Reference numerals: 1 - housing, 2 - first slide rail, 3 - measuring ruler, 4 - sliding column, 5 - connecting buckle, 6 - bolt, 7 - positioning member, 8 - rotating plate, 9 - sliding member, 10 - fixed shell, 1001 - first cavity, 1002 - second cavity, 11 - sliding rod, 12 - roller, 13 - sliding block, 14 - connecting rod, 15 - scale, 16 - main protective shell, 17 - second slide rail, 18 - secondary protective shell, 19 - limiting strip. DETAILED DESCRIPTION OF THE INVENTION

[0030] The present invention will be further described below in conjunction with specific embodiments. It should also be noted that unless otherwise clearly defined and limited, terms such as "set", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] This embodiment discloses a flatness measuring device for building walls, which is used to measure the flatness of building walls.

[0033] As Figures 1-5 shown, it includes two outer shells 1, which are symmetrically distributed front and back. The left sides of the two outer shells 1 are rotatably connected. Rotate one of the outer shells 1 to make the two outer shells 1 unfold into a straight line state. Four first slide rails 2 are fixedly connected inside the outer shell 1, with two on the front side and two on the back side. The first slide rails 2 are inclined. A measuring ruler 3 is arranged inside the outer shell 1, and the two measuring rulers 3 are pressed against each other. Two sliding columns 4 are fixedly connected to the front and back sides of the measuring ruler 3, and the sliding columns 4 are slidably connected to the adjacent first slide rails 2. A connecting buckle 5 is rotatably connected to the front outer shell 1. The connecting buckle 5 and the bolt 6 are used to keep the two outer shells 1 in the unfolded state. The bolt 6 is threadedly connected to the back outer shell 1, and the bolt 6 is used to fix the connecting buckle 5. A positioning member 7 is hinged to the right side inside the outer shell 1. A rotating plate 8 is rotatably connected to the right side of the measuring ruler 3, and the rotating plate 8 is slidably connected to the adjacent positioning member 7, and a first spring is arranged between them. This spring is always in a compressed state, which is used to retract the measuring ruler 3 into the adjacent outer shell 1 when it is not working, thereby reducing the probability of damage to the measuring ruler 3. An arc portion is arranged on the left side of the measuring ruler 3, and the arc portions of the two measuring rulers 3 are symmetrically distributed front and back, which is used to press the two measuring rulers 3 against each other. The length of the projection on the horizontal plane of the maximum distance that the measuring ruler 3 moves along the first slide rail 2 is equal to the length of the measuring ruler 3 extending out of the outer shell 1. Thus, after the two outer shells 1 are unfolded, the left sides of the two measuring rulers 3 just move into the outer shell 1, and the sliding columns 4 move to the limit positions of the adjacent first slide rails 2, so that the two measuring rulers 3 are in the same horizontal plane after moving.

[0034] The measurement process of the flatness measuring device in this embodiment is as follows:

[0035] When using this device to measure the flatness of a wall surface, first rotate the front or rear housing 1 so that the two housings 1 are in a straight line. During the rotation of the housing 1, the housing 1 drives the measuring ruler 3 to rotate through the adjacent first slide rail 2 and the adjacent sliding column 4. When the angle between the two housings 1 exceeds 90°, the two measuring rulers 3 come into contact and press against each other. The two measuring rulers 3 respectively drive the adjacent sliding columns 4 to slide along the adjacent first slide rail 2, and the measuring ruler 3 moves obliquely downward and emerges from the lower side of the housing 1. During the movement of the measuring ruler 3 relative to the adjacent housing 1, the measuring ruler 3 drives the adjacent rotating plate 8 to move. When the rotating plate 8 generates a displacement, it rotates and drives the adjacent positioning member 7 to rotate. At the same time, the rotating plate 8 compresses the adjacent first spring. After the two housings 1 are in a straight line, rotate the connecting buckle 5 to make the connecting buckle 5 latch onto the bolt 6, and then rotate the bolt 6 to clamp the connecting buckle 5. Then, the lower sides of the two measuring rulers 3 can be made to adhere to the wall surface to measure the flatness of the wall surface. After the measurement is completed, reverse the above process. First, separate the connecting buckle 5 and the bolt 6. Then, during the rotation of the two housings 1 from the same straight line to parallel, the first spring on the positioning member 7 pushes the rotating plate 8 to move obliquely upward, and the rotating plate 8 drives the measuring ruler 3 to move, thus restoring the device to its original state.

[0036] Embodiment 2

[0037] A device for measuring the flatness of a wall surface in a building disclosed in this embodiment, on the basis of Embodiment 1, further has the function of measuring the width of a gap.

[0038] As Figures 6-8 shown, a sliding member 9 is slidably connected to the upper side of the front housing 1. A sliding slot is provided on the upper side of the housing 1, and the sliding member 9 is located in the sliding slot and slides therein. The left side of the sliding slot penetrates through the left side of the housing 1. A fixed housing 10 is fixedly connected to the front side of the sliding member 9. The fixed housing 10 is provided with a first cavity 1001. A sliding rod 11 is slidably connected in the first cavity 1001. The sliding rod 11 is slidably connected to the fixed housing 10 at two positions, upper and lower. A sealing member is provided at the upper sliding connection, and the lower sliding connection is not sealed. A second spring is provided between the sliding rod 11 and the fixed housing 10, and the second spring is in a compressed state in the illustrated state.

[0039] As Figure 6 and 5 Figure 7 shown, the sliding rod 11 is rotatably connected to a roller 12. The roller 12 is made of a hard material to avoid measurement errors caused by the deformation of an elastic material. The roller 12 is used to reduce the friction between the sliding rod 11 and the wall surface.

[0040] As Figure 7 and Figure 8As shown in the figure, the fixed housing 10 is provided with a second cavity 1002. The second cavity 1002 is communicated with the first cavity 1001. Both the second cavity 1002 and the first cavity 1001 are cylindrical. The diameter of the second cavity 1002 is smaller than that of the first cavity 1001, so as to realize the amplification of the stroke of the sliding rod 11. A sliding block 13 is slidably connected in the second cavity 1002. Seals are provided between both the sliding block 13 and the connecting rod 14 and the fixed housing 10. The lower side of the second cavity 1002 is communicated with the outside. The sliding block 13 is fixedly connected with a connecting rod 14 passing through the fixed housing 10. The connecting rod 14 is fixedly connected with a scale 15. The scale 15 is slidably connected with the fixed housing 10. Liquids are filled in both the second cavity 1002 and the first cavity 1001. This liquid is used for transmission and water can be selected.

[0041] Before the measuring ruler 3 touches the wall surface, the roller 12 touches the wall surface first, and then the housing 1 is further pushed towards the wall surface. The housing 1 drives the measuring ruler 3 to touch the wall surface. During this process, the sliding rod 11 moves into the fixed housing 10 and compresses the second spring adjacent to it. At the same time, the liquid in the first cavity 1001 is pressed into the second cavity 1002. The liquid in the second cavity 1002 increases and pushes the sliding block 13 to move downward to the position shown in the figure. At this time, the upper side of the fixed housing 10 is aligned with the 0 scale of the scale 15, and the lower side of the roller 12 is aligned with the lower side of the measuring ruler 3 extending from the housing 1. When it is observed that there is a gap between the measuring ruler 3 and the wall surface that needs to be measured during the measurement process, the sliding member 9 is moved to the place to be measured. The sliding member 9 drives the fixed housing 10 to move. The fixed housing 10 drives the sliding rod 11 to move. The sliding rod 11 drives the roller 12 to roll along the wall surface. When the roller 12 moves to the gap, the sliding rod 11 moves downward under the action of the adjacent second spring and sucks the liquid in the second cavity 1002 into the first cavity 1001, so as to drive the scale 15 to move upward and change the alignment position of the scale on the scale 15 and the upper side of the fixed housing 10, so as to read the scale on the scale 15. This reading is the width of the gap.

[0042] Embodiment 3

[0043] A device for measuring the flatness of a building wall surface disclosed in this embodiment is further improved on the basis of Embodiment 2.

[0044] Such as Figure 1 、 Figures 6-9As shown in the figure, the main protective shell 16 is fixedly connected to the front shell 1. The protective shell 16 is used to protect the scale 15 and reduce the probability of the scale 15 being accidentally collided. The lower side of the main protective shell 16 is fixedly connected with second slide rails 17 that are symmetrically distributed front and back. The second slide rails 17 have a horizontal part, an arc part, and a vertical part. The two second slide rails 17 jointly slidably connect to a secondary protective shell 18. The secondary protective shell 18 consists of a shell and four cylinders. The four cylinders are divided into two parts, front and back. The cylinders on the same side are slidably connected to the second slide rails 17 on the same side. The lengths of the three parts of the second slide rails 17 are all greater than the distance between the two cylinders on the same side to ensure the normal sliding of the secondary protective shell 18. The secondary protective shell 18 and the roller 12 are mutually extruded.

[0045] As Figure 9 As shown in the figure, the second slide rails 17 are provided with four limiting strips 19. The limiting strips 19 are made of elastic material. There are two limiting strips 19 on each of the horizontal part and the vertical part of the second slide rails 17. The distance between the two limiting strips 19 is equal to the diameter of the cylinder of the secondary protective shell 18. When the cylinder of the protective shell 18 is located between two adjacent limiting strips 19, the secondary protective shell 18 can be limited in the current position. The limiting strips 19 are used to limit the secondary protective shell 18.

[0046] After the bolt 6 finishes fixing the connecting buckle 5, the secondary protective shell 18 is slid along the second slide rails 17. When the secondary protective shell 18 slides, it extrudes the adjacent limiting strips 19, causing them to deform, so that the secondary protective shell 18 can pass through. When the secondary protective shell 18 moves to the vertical part of the second slide rails 17, the secondary protective shell 18 extrudes the adjacent limiting strips 19 again and passes through, thereby maintaining the secondary protective shell 18 at the vertical part of the second slide rails 17. When the secondary protective shell 18 is separated from the roller 12, the sliding rod 11 moves downward under the action of the adjacent second springs and drives the scale 15 to move upward to the maximum distance. Then the above process can be carried out to measure the flatness of the wall. After the measurement is completed, the roller 12 is pressed upward to retract the sliding rod 11. At the same time, the sliding rod 11 drives the scale 15 to retract. Then the sliding part 9 is slid to the initial position, and then the secondary protective shell 18 is moved so that the secondary protective shell 18 holds the roller 12 to protect the roller 12 and the scale 15. At this time, the left limiting strip 19 limits the cylinder of the secondary protective shell 18 again.

[0047] Embodiment 4

[0048] A device for measuring the flatness of a wall surface of a building disclosed in this embodiment further improves the positional relationship between the measuring ruler 3 and the sliding part 9 on the basis of Embodiment 1, so that the sliding part 9 can freely shuttle between the two shells 1 and will not detach from the shell 1 when not in use.

[0049] As Figure 6As shown, the upper side of the measuring ruler 3 is higher than the lower side of the sliding member 9. When the measuring ruler 3 is in the upper position, it blocks the sliding member 9, so that the sliding member 9 cannot slide freely on the housing 1. The maximum distance that the measuring ruler 3 moves along the first slide rail 2 is greater than the vertical distance between the upper side of the measuring ruler 3 and the lower side of the sliding member 9 in the vertical direction. When the measuring ruler 3 moves, it moves obliquely downward. After the measuring ruler 3 moves to the lower side, it can no longer block the sliding member 9.

[0050] Embodiment 5

[0051] A wall flatness measuring device for a building disclosed in this embodiment further improves the positional relationship between the positioning member 7 and the first slide rail 2 on the basis of Embodiment 1.

[0052] As Figure 4 and Figure 5 shown, both the positioning member 7 and the first slide rail 2 are inclined. The inclination angle of the positioning member 7 is the same as the inclination angle of the first slide rail 2, so that the moving direction of the measuring ruler 3 is parallel to the axial direction of the positioning member 7, and thus it is easier for the first spring to push the rotating plate 8 to drive the measuring ruler 3 to reset.

[0053] Although the present disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the above embodiments.

Claims

1. A device for measuring the flatness of the wall surface of a building, characterized in that, It includes two outer shells (1), the two outer shells (1) are rotatably connected, symmetrically distributed first slide rails (2) are fixedly connected inside the outer shell (1), a measuring ruler (3) is arranged inside the outer shell (1), the two measuring rulers (3) are mutually extruded, symmetrically distributed sliding columns (4) are fixedly connected to the measuring ruler (3), the sliding columns (4) are slidably connected to the adjacent first slide rails (2), a connecting buckle (5) is rotatably connected to one of the outer shells (1), a bolt (6) is threadedly connected to the other outer shell (1), and the bolt (6) is used to fix the connecting buckle (5), a positioning member (7) is hinged to the outer shell (1), a rotating plate (8) is rotatably connected to the measuring ruler (3), the rotating plate (8) is slidably connected to the adjacent positioning member (7), and a first spring is arranged between the two.

2. The flatness measuring device for the wall surface of a building according to claim 1, characterized in that, A sliding member (9) is slidably connected to one of the outer shells (1), a fixed shell (10) is fixedly connected to the sliding member (9), a first cavity (1001) is arranged in the fixed shell (10), a sliding rod (11) is slidably connected in the first cavity (1001), and a second spring is arranged between the sliding rod (11) and the fixed shell (10).

3. The wall flatness measuring device for a housing building according to claim 2, characterized in that, The sliding rod (11) is rotatably connected with a roller (12), and the roller (12) is used to reduce the friction between the sliding rod (11) and the wall surface.

4. A wall flatness measuring device for a building as claimed in claim 2, wherein The fixed shell (10) is provided with a second cavity (1002), the second cavity (1002) communicates with the first cavity (1001), a sliding block (13) is slidably connected in the second cavity (1002), a connecting rod (14) passing through the fixed shell (10) is fixedly connected to the sliding block (13), a scale (15) is fixedly connected to the connecting rod (14), the scale (15) is slidably connected to the fixed shell (10), and liquids are filled in both the second cavity (1002) and the first cavity (1001).

5. The flatness measuring device for the wall surface of a building according to claim 4, characterized in that A main protection shell (16) is fixedly connected to one of the outer shells (1), symmetrically distributed second slide rails (17) are fixedly connected to the main protection shell (16), a sub - protection shell (18) is slidably connected by the symmetrically distributed second slide rails (17) together, and the sub - protection shell (18) is mutually extruded with the roller (12).

6. The wall flatness measuring device for a housing building according to claim 5, characterized in that, A number of limiting strips (19) are arranged on the second slide rail (17), and the limiting strips (19) are used to limit the sub - protection shell (18).

7. A wall flatness measuring device for a building as claimed in claim 1, characterized in that, The measuring ruler (3) is provided with an arc portion for mutually extruding the two measuring rulers (3).

8. A wall flatness measuring device for a housing building according to claim 2, characterized in that, The upper side of the measuring ruler (3) is higher than the lower side of the sliding member (9), and the maximum distance that the measuring ruler (3) moves along the first slide rail (2) in the vertical direction is greater than the vertical distance between the upper side of the measuring ruler (3) and the lower side of the sliding member (9).

9. The wall surface flatness measuring device for a housing building according to claim 1, characterized in that, Both the positioning member (7) and the first slide rail (2) are inclined, and the inclination angle of the positioning member (7) is the same as the inclination angle of the first slide rail (2).

10. A wall flatness measuring device for a housing building according to claim 1, characterized in that, The length of the projection on the horizontal plane of the maximum distance that the measuring ruler (3) moves along the first slide rail (2) is equal to the length of the measuring ruler (3) extending out of the housing (1).

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