A wall flatness measuring device with convenient adjustment

By designing a split-type straightedge device, and using sliding pairs and adjusting brackets to form an obstacle avoidance zone, the problem of inaccurate detection caused by obstructions in wall flatness detection is solved, and effective detection of obstacle areas is achieved.

CN120947461BActive Publication Date: 2025-12-12WEIFANG METROLOGY TECH RES INST +2
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Patent Information

Application Number
CN202511483345.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-17
Publication Date
2025-12-12
Estimated Expiration
2045-10-17

AI Technical Summary

Technical Problem

Existing wall flatness testing devices cannot accurately detect the flatness of the area between the obstruction and the wall edge when encountering obstacles, especially those near the wall edge, resulting in inaccurate detection.

Method used

A split-type straightedge device was designed, including a main straightedge unit and a secondary straightedge unit. An obstacle avoidance zone is realized through a sliding pair and an adjusting bracket. A guide part and a positioning structure are set between the main straightedge unit and the secondary straightedge unit. The adjusting bracket can be angled to form an obstacle avoidance zone, ensuring that the working surface of the straightedge is effectively attached to the wall.

Benefits of technology

It enables the horizontal flatness detection of walls with obstacles, and ensures the accuracy and completeness of the detection by using two-dimensional obstacle avoidance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application is suitable for the field of detection measuring device, and provides a wall flatness measuring device convenient to adjust, which comprises a main ruler unit, a sub-ruler unit connected to the end of the main ruler unit and capable of moving along the long side direction of the main ruler unit, and the measuring working surface of the sub-ruler unit is coplanar with the measuring working surface of the main ruler unit; after the sub-ruler unit moves away from the main ruler unit, the measuring working surface of the sub-ruler unit and the measuring working surface of the main ruler unit have a spacing distance to form an obstacle avoidance area, thereby, the application realizes the following: the traditional integrated ruler is improved into a split type ruler to form an obstacle avoidance area, and the flatness detection work in the horizontal direction of the wall with obstacles can be realized; for the obstacles that cannot be avoided in a single dimension, the measuring working surface of the ruler is angle-transformed for two-dimensional avoidance to ensure the effective adhesion work of the equipment working surface.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of detection measuring device, especially to a wall flatness measuring device convenient to adjust. BACKGROUND

[0002] The detection work of wall flatness is generally detected by the cooperation of the ruler and the plug ruler. When detecting, the working edge of the ruler is abutted on the wall surface to be detected. If the wall surface is not flat, a gap will be formed between the working edge and the wall surface. The slope sensor inside the equipment detects the slope value, and then the plug ruler is inserted into the gap to detect the size of the gap, so as to detect the flatness result of the wall surface.

[0003] However, the ruler at the present stage is generally of an integral structure. When detecting the wall flatness, if a blocking object such as a plug, a valve head or a pipeline is encountered, especially when the blocking object is close to the edge of the wall, the ruler cannot be inserted into the edge area, i.e. the area between the blocking object and the edge of the wall. Figure 1

[0004] The flatness detection of an area usually needs horizontal detection, vertical detection and at least one direction of inclined detection for comprehensive judgment. Therefore, the blocking object will affect the horizontal detection and even the inclined detection, thereby causing inaccurate detection.

[0005] In summary, the prior art has obvious inconvenience and defects in actual use, so it is necessary to improve. SUMMARY

[0006] In view of the above defects, the purpose of the present application is to provide a wall flatness measuring device convenient to adjust, which realizes the following: 1. The traditional integral ruler is improved into a split ruler to form an obstacle avoidance area, so as to realize the flatness detection work in the horizontal direction of the wall with obstacles;

[0007] 2. For obstacles that cannot be avoided in a single dimension, the working surface of the ruler is angle-transformed for two-dimensional avoidance to ensure the effective fitting work of the working surface of the equipment.

[0008] In order to achieve the above purpose, the present application provides a wall flatness measuring device convenient to adjust, which comprises: a main ruler unit; a secondary ruler unit connected to the end of the main ruler unit and capable of moving along the long edge direction of the main ruler unit; the working surface of the secondary ruler unit is coplanar with the working surface of the main ruler unit; after the secondary ruler unit moves away from the main ruler unit, there is a spacing distance between the working surface of the secondary ruler unit and the working surface of the main ruler unit to form an obstacle avoidance area.

[0009] ​The convenient adjustment wall flatness measuring device according to the present application, the main ruler unit is connected with the auxiliary ruler unit through a sliding pair; the sliding pair comprises a sliding groove and a guide part which are matched with each other, one of the sliding groove and the guide part is arranged on the main ruler unit, and the other is arranged on the auxiliary ruler unit correspondingly.

[0010] The convenient adjustment wall flatness measuring device according to the present application, the main ruler unit is hinged with an adjustment support; the measuring working surface is arranged on the adjustment support; during adjustment, the adjustment support can be adjusted in angle with the long side direction of the main ruler unit as the rotation axis; the adjustment support has two working states; in the first state, the adjustment support abuts against the main ruler unit; in the second state, the adjustment support forms a supporting space with the main ruler unit after being adjusted in angle; the auxiliary ruler unit is also provided with an adjustment support; the adjustment support of the main ruler unit and the adjustment support of the auxiliary ruler unit have the same structure and the same connection mode.

[0011] The convenient adjustment wall flatness measuring device according to the present application, the main ruler unit is hinged with an adjustment support; the measuring working surface is arranged on the adjustment support; during adjustment, the adjustment support can be adjusted in angle with the long side direction of the main ruler unit as the rotation axis; the adjustment support has two working states; in the first state, the adjustment support abuts against the main ruler unit; in the second state, the adjustment support forms a supporting space with the main ruler unit after being adjusted in angle; the auxiliary ruler unit is also provided with an adjustment support; the adjustment support of the main ruler unit and the adjustment support of the auxiliary ruler unit have the same structure and the same connection mode.

[0012] The convenient adjustment wall flatness measuring device according to the present application, the main ruler unit is hinged with an adjustment support; the measuring working surface is arranged on the adjustment support; during adjustment, the adjustment support can be adjusted in angle with the long side direction of the main ruler unit as the rotation axis; the adjustment support has two working states; in the first state, the adjustment support abuts against the main ruler unit; in the second state, the adjustment support forms a supporting space with the main ruler unit after being adjusted in angle; the auxiliary ruler unit is also provided with an adjustment support; the adjustment support of the main ruler unit and the adjustment support of the auxiliary ruler unit have the same structure and the same connection mode.

[0013] The convenient adjustment wall flatness measuring device according to the present application, the main ruler unit is hinged with an adjustment support; the measuring working surface is arranged on the adjustment support; during adjustment, the adjustment support can be adjusted in angle with the long side direction of the main ruler unit as the rotation axis; the adjustment support has two working states; in the first state, the adjustment support abuts against the main ruler unit; in the second state, the adjustment support forms a supporting space with the main ruler unit after being adjusted in angle; the auxiliary ruler unit is also provided with an adjustment support; the adjustment support of the main ruler unit and the adjustment support of the auxiliary ruler unit have the same structure and the same connection mode.

[0014] The convenient adjustment wall flatness measuring device according to the present application, the main ruler unit is hinged with an adjustment support; the measuring working surface is arranged on the adjustment support; during adjustment, the adjustment support can be adjusted in angle with the long side direction of the main ruler unit as the rotation axis; the adjustment support has two working states; in the first state, the adjustment support abuts against the main ruler unit; in the second state, the adjustment support forms a supporting space with the main ruler unit after being adjusted in angle; the auxiliary ruler unit is also provided with an adjustment support; the adjustment support of the main ruler unit and the adjustment support of the auxiliary ruler unit have the same structure and the same connection mode.

[0015] The convenient adjustment wall flatness measuring device according to the present application, the main ruler unit is hinged with an adjustment support; the measuring working surface is arranged on the adjustment support; during adjustment, the adjustment support can be adjusted in angle with the long side direction of the main ruler unit as the rotation axis; the adjustment support has two working states; in the first state, the adjustment support abuts against the main ruler unit; in the second state, the adjustment support forms a supporting space with the main ruler unit after being adjusted in angle; the auxiliary ruler unit is also provided with an adjustment support; the adjustment support of the main ruler unit and the adjustment support of the auxiliary ruler unit have the same structure and the same connection mode.

[0016] The application provides a wall flatness measuring device with convenient adjustment, which comprises a main ruler unit, a sub-ruler unit which is correspondingly connected to the end of the main ruler unit and can move along the long side direction of the main ruler unit, and the measuring surface of the sub-ruler unit is coplanar with the measuring surface of the main ruler unit; after the sub-ruler unit moves away from the main ruler unit, the measuring surface of the sub-ruler unit and the measuring surface of the main ruler unit have a spacing distance to form an obstacle avoidance area. The main ruler unit is hinged with an adjusting bracket; the measuring surface is arranged on the adjusting bracket; during adjustment, the adjusting bracket can be angularly adjusted with the long side direction of the main ruler unit as the rotation axis; the adjusting bracket has two working states; in the first state, the adjusting bracket abuts against the main ruler unit; in the second state, the adjusting bracket forms a supporting space with the main ruler unit after angular adjustment; the sub-ruler unit is also provided with an adjusting bracket; the adjusting bracket of the main ruler unit and the adjusting bracket of the sub-ruler unit have the same structure and the same connection mode.

[0017] The application realizes the following: 1. The traditional integrated ruler is improved into a split type ruler to form an obstacle avoidance area, so that the flatness detection work in the horizontal direction of the wall with obstacles can be realized;

[0018] 2. For the obstacles which cannot be avoided in a single dimension, the measuring surface of the ruler is angularly transformed for two-dimensional avoidance, so as to ensure the effective adhesion work of the equipment surface. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a position diagram of the obstacle on the wall;

[0020] Figure 2 It is a structural schematic diagram of the sub-ruler unit of the application in the disengaged state;

[0021] Figure 3 It is a structural schematic diagram of the sub-ruler unit of the application in the disengaged state;

[0022] Figure 4 It is a structural schematic diagram of the sub-ruler unit in the disengaged state in another embodiment of the application;

[0023] Figure 5 It is a structural diagram of the self-locking block and the positioning block on the guide rod;

[0024] Figure 6 It is a setting diagram of the arc-shaped rack and the slope sensor;

[0025] Figure 7 It is a working schematic diagram of the adjusting bracket in the second state;

[0026] Figure 8 It is a structural schematic diagram of the positioning structure;

[0027] Figure 9 is the structural arrangement of the self-locking block and the positioning block, and the arc-shaped rack and the locking part;

[0028] In the figure, 00-obstacle, 01-gradient sensor, 1-main gauge unit, 11-obstacle avoidance area, 2-secondary gauge unit, 3-adjusting support, 4-slot, 5-insert block, 6-arc-shaped rack, 7-positioning block, 8-guide rod, 9-slotted guide, 10-self-locking block, 12-locking part. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0030] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0031] Meanwhile, "and / or" or "and / or" appearing throughout the text means that it includes three solutions. Taking "A and / or B" as an example, it includes A solution, or B solution, or A and B solutions.

[0032] In addition, if the embodiments of the present application involve "first", "second", etc. description, the "first", "second", etc. description is only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0033] Referring to Figure 1 , Figure 2 and Figure 3 , the present application provides a convenient adjustment wall flatness measuring device, which comprises:

[0034] The main leaning ruler unit 1 is the main body of the whole leaning ruler device; the main leaning ruler unit 1 is provided with a digital display instrument connected with the slope sensor signal, and the slope data of the main leaning ruler unit 1 can be accurately measured by the slope sensor compared with the reference state, and the slope data of the main leaning ruler unit 1 is displayed by the digital display instrument. It needs to be explained that the detection mechanism of the whole slope data is not changed in this application, and only the function is described here.

[0035] The auxiliary leaning ruler unit 2 is connected to the end of the main leaning ruler unit 1 and can move along the long edge direction of the main leaning ruler unit 1 (as shown in the figure); the measuring working surface of the auxiliary leaning ruler unit 2 is coplanar with the measuring working surface of the main leaning ruler unit 1; the length of the auxiliary leaning ruler unit 2 is much smaller than that of the main leaning ruler unit 1, which can be placed at the edge of the obstacle close to the wall. Figure 3

[0036] Referring to Figure 1 , Figure 2 and Figure 3 , when there is no obstacle on the wall in the normal use of the device, the auxiliary leaning ruler unit 2 is attached to the main leaning ruler unit 1 and constitutes a whole for measuring, that is, Figure 2 state; when there is an obstacle on the wall, and the obstacle 00 is only slightly higher than the height of the wall surface, such as the obstacle is a plug structure, after the auxiliary leaning ruler unit 2 moves away from the main leaning ruler unit 1, there is a distance between the measuring working surface of the auxiliary leaning ruler unit 2 and the measuring working surface of the main leaning ruler unit 1 to form an obstacle avoidance area 11, that is, Figure 3 state, when measuring, the measuring working surface of the auxiliary leaning ruler unit 2 and the measuring working surface of the main leaning ruler unit 1 can effectively contact the wall.

[0037] In some embodiments of the present application, the main leaning ruler unit 1 and the auxiliary leaning ruler unit 2 are connected by a sliding pair; the sliding pair includes a sliding groove and a guide part matched with each other, one of the sliding groove and the guide part is arranged on the main leaning ruler unit 1, and the other is arranged on the auxiliary leaning ruler unit 2.

[0038] In the first embodiment, the guide part is a guide rod 8, and the sliding groove is a sliding groove 9 matched with the guide rod 8;

[0039] At least two guide rods 8 are arranged in parallel between the main leaning ruler unit 1 and the auxiliary leaning ruler unit 2;

[0040] The plurality of guide rods 8 are divided into two groups, one group of guide rods 8 is fixedly connected at the end to the main leaning ruler unit 1, and the other group of guide rods 8 is fixedly connected at the end to the auxiliary leaning ruler unit 2, as shown in Figure 5 .

[0041] Referring to Figure 4 ​In the second embodiment, the difference from the above-mentioned embodiment is that the guide part can be a part of the secondary ruler unit 2, that is, the guide part is an extension part protruding outward from the secondary ruler unit 2, and the primary ruler unit 1 is provided with a sliding groove matched with the primary ruler unit 1.

[0042] If the obstacle is higher than the wall surface by a large margin, for example, the obstacle is an outwardly extending pipeline, the obstacle cannot be contained in the obstacle avoidance area 11, and the measuring working surface of the secondary ruler unit 2 cannot effectively contact the wall surface with the measuring working surface of the primary ruler unit 1.

[0043] Referring to Figure 2 , Figure 6 and Figure 7 Therefore, in order to solve the above-mentioned problems, the application discloses the following structure, the primary ruler unit 1 is hinged with an adjusting support 3; the measuring working surface is arranged on the adjusting support 3; the main body of the adjusting support 3 is a long plate structure, and a slope sensor 01 is arranged on the long plate structure away from the measuring working surface. When adjusting, the adjusting support 3 can be angle-adjusted with the long side direction of the primary ruler unit 1 as the rotation axis,

[0044] The adjusting support 3 has two working states;

[0045] In the first state, the adjusting support 3 abuts against the primary ruler unit 1, and this state is the above-mentioned device detection state for the obstacle height being slightly higher than the wall surface, that is, Figure 2 as shown in the figure.

[0046] In the second state, Figure 7 as shown, the adjusting support 3 forms a support space with the primary ruler unit 1 after angle adjustment; the secondary ruler unit 2 has the same structure as the primary ruler unit 1, that is, the secondary ruler unit is also provided with an adjusting support; the adjusting support of the primary ruler unit and the adjusting support of the secondary ruler unit have the same structure and the same connection mode. At this time, the adjusting support 3 is separated from the device main body (the primary ruler unit 1 and the secondary ruler unit 2), so that the range of the obstacle avoidance area 11 is expanded from one dimension to two dimensions, and the measuring working surface can effectively contact the wall surface, thereby ensuring the smoothness measurement work.

[0047] Referring to Figure 5 , Figure 6 and Figure 7 In some embodiments of the application, in order to ensure the stability of the adjusting support 3 in the above-mentioned second state and avoid that the device is pressed by external force during the measurement, the angle of the adjusting support 3 is changed, and it is difficult to ensure the stable contact of the measuring working surface with the wall surface, based on this, the application is provided with a locking assembly between the adjusting support 3 and the primary ruler unit 1, which locks the adjusting angle of the adjusting support 3;

[0048] The locking assembly comprises an arc-shaped rack 6 arranged on the adjusting support 3 and extending into the main ruler unit 1 and a positioning block 7 slidingly arranged in the main ruler unit 1 and capable of being inserted into the tooth gap of the arc-shaped rack 6.

[0049] During the angle switching of the adjusting support 3, the positioning block 7 is disengaged from the tooth gap of the arc-shaped rack 6, at this time, the arc-shaped rack 6 can rotate relative to the main ruler unit 1.

[0050] During detection, the adjusting support 3 needs to be in the angle locking state, the positioning block 7 is inserted into the tooth gap of the arc-shaped rack 6, at this time, the arc-shaped rack 6 is fixed relative to the main ruler unit 1, and the arc-shaped rack 6 supports the adjusting support 3.

[0051] In some embodiments of the present application, since effective contact between the measuring surface and the wall needs to be ensured during detection, the auxiliary ruler unit 2 and the adjusting support 3 of the main ruler unit 1 need to have the same included angle state, based on which, the auxiliary ruler unit 2 and the adjusting support 3 of the main ruler unit 1 have a positioning structure, and the present application utilizes the positioning structure to realize the synchronization of the two adjusting supports 3 during angle switching.

[0052] The positioning structure comprises a cooperating insertion slot 4 and an insertion block 5, one of the insertion slot 4 and the insertion block 5 is arranged on the adjusting support 3 of the auxiliary ruler unit 2, and the other is arranged on the corresponding adjusting support 3. When one of the adjusting supports 3 is driven (such as handheld driving) to switch the angle, the other adjusting support 3 can be synchronously driven to rotate, so as to ensure the synchronization of the positions of the two adjusting supports 3.

[0053] It needs to be explained that before the auxiliary ruler unit 2 is disengaged, the angle switching work of the auxiliary ruler unit 2 and the adjusting support 3 of the main ruler unit 1 needs to be completed.

[0054] In some embodiments of the present application, the positioning block 7 is arranged on the guide rod 8, so that the auxiliary ruler unit 2 further drives the positioning block 7 to move during movement, and the state locking of the adjusting support 3 is realized. During operation, since it is inevitable to pull the auxiliary ruler unit 2 to move in order to generate the obstacle avoidance area 11, the state locking of the adjusting support 3 can be realized synchronously when the auxiliary ruler unit 2 moves, which simplifies the operation process and ensures the stability of the equipment operation process, that is, the locking work of the adjusting support 3 will not be forgotten.

[0055] In addition, in the above-mentioned embodiments, the guide rods 8 are arranged in groups, and during the movement of the auxiliary ruler unit 2, the guide rods 8 arranged in the auxiliary ruler unit 2 or the main ruler unit 1 will be displaced in the equipment, and will drive the locking of the respective positioning blocks 7, further ensuring the respective locking of the adjusting supports 3 of the auxiliary ruler unit 2 or the main ruler unit 1 after the movement of the auxiliary ruler unit 2, and further simplifying the operation process.

[0056] Referring to Figure 5 and Figure 9 , in some embodiments of the present application, in order to ensure the stability of the adjusting bracket 3 in the first state described above, a self-locking block 10 is further arranged on the guide rod 8; a locking portion 12 with a locking groove is arranged on the adjusting bracket 3, which cooperates with the self-locking block 10, and the locking portion 12 extends into the main ruler unit 1; when the adjusting bracket 3 is in the first state, the self-locking block 10 is inserted into the locking groove, realizing double-state locking work.

[0057] It should be noted that, on the basis of the above embodiments, the self-locking block 10 on the guide rod 8 is at a distance B from the positioning block 7, and the arc-shaped rack 6 on the adjusting bracket 3 is at a distance A from the locking portion 12, and the distance B is greater than the distance A; when it is necessary to drive the adjusting bracket 3 to adjust the angle, the sub-ruler unit 2 needs to be driven (hand driving is sufficient) to move a predetermined distance, so that the self-locking block 10 and the locking portion 12, and the arc-shaped rack 6 and the positioning block 7 are all in a non-cooperative state (i.e. no locking state), Figure 9 as shown.

[0058] During the operation of the device, when there is an obstacle on the wall, and the height of the obstacle is only slightly higher than the wall surface, it is only necessary to drive the sub-ruler unit 2 to move, so that the obstacle avoidance area 11 completely covers the obstacle.

[0059] If the height of the obstacle is much higher than the wall surface, first, the sub-ruler unit 2 needs to be driven to move, so that the adjusting bracket 3 is in a non-locking state, at which time the insertion slot 4 of the positioning structure and the insertion block 5 have not been separated, the adjusting bracket 3 is hand-driven to rotate a predetermined angle, then the sub-ruler unit 2 is continuously pulled to a suitable distance, at which time the insertion slot and the insertion block 5 have been separated, and the adjusting bracket 3 is locked. Finally, the measuring surface of the adjusting bracket 3 is abutted against the wall surface.

[0060] Of course, the present application can also have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present application without departing from the spirit and essence of the present application, but these corresponding changes and modifications should all belong to the protection scope of the claims attached to the present application.

Claims

1. A wall flatness measuring device for easy adjustment, characterized in that, The application relates to a wall distance measuring device. The device comprises: a main distance measuring unit; a sub distance measuring unit, which is connected to the end of the main distance measuring unit and can move along the long side direction of the main distance measuring unit; the measuring working surface of the sub distance measuring unit is coplanar with the measuring working surface of the main distance measuring unit; after the sub distance measuring unit moves away from the main distance measuring unit, the measuring working surface of the sub distance measuring unit and the measuring working surface of the main distance measuring unit have a spacing distance to form an obstacle avoidance area; the main distance measuring unit is hinged with an adjusting support; the measuring working surface is arranged on the adjusting support; during adjustment, the adjusting support can be angularly adjusted with the long side direction of the main distance measuring unit as the rotating axis; the adjusting support has two working states; in the first state, the adjusting support abuts against the main distance measuring unit; in the second state, the adjusting support forms a supporting space with the main distance measuring unit after angular adjustment; the sub distance measuring unit is also provided with an adjusting support; the adjusting support of the main distance measuring unit and the adjusting support of the sub distance measuring unit have the same structure and the same connection mode; the adjusting support of the sub distance measuring unit and the adjusting support of the main distance measuring unit have a positioning structure; the positioning structure comprises a matching insertion slot and an insertion block; one of the insertion slot and the insertion block is arranged on the adjusting support of the sub distance measuring unit, and the other is arranged on the corresponding adjusting support; a locking assembly is arranged between the adjusting support and the main distance measuring unit to lock the adjusting angle of the adjusting support; the locking assembly comprises an arc-shaped rack arranged on the adjusting support and extending into the main distance measuring unit and a positioning block slidably arranged in the main distance measuring unit and capable of being inserted into the tooth gap of the arc-shaped rack; during operation of the device, when there is an obstacle on the wall, and the height of the obstacle is only slightly higher than the wall surface, the sub distance measuring unit is only needed to be moved to make the obstacle avoidance area completely cover the obstacle; 2. The conveniently adjustable wall flatness measuring device of claim 1, wherein, if the height of the obstacle is much higher than the wall surface, the sub distance measuring unit is first moved to make the adjusting support in a non-locked state, at this time, the insertion slot and the insertion block of the positioning structure have not been separated, the adjusting support is rotated by a predetermined angle by hand driving, then the sub distance measuring unit is continuously pulled to a proper distance, at this time, the insertion slot and the insertion block have been separated, the adjusting support is locked, and finally, the measuring working surface of the adjusting support is abutted against the wall surface.

3. The conveniently adjustable wall flatness measuring device of claim 2, wherein, the main distance measuring unit and the sub distance measuring unit are connected through a sliding pair; the sliding pair comprises a matching sliding channel and a guide part; one of the sliding channel and the guide part is arranged on the main distance measuring unit, and the other is correspondingly arranged on the sub distance measuring unit. the guide part is a guide rod, and the sliding channel is a sliding groove matched with the guide rod; at least two guide rods are arranged in parallel between the main distance measuring unit and the sub distance measuring unit; 4. The conveniently adjustable wall flatness measuring device of claim 3, wherein, the guide rods are divided into two groups; one group of guide rods is fixedly connected to the end of the main distance measuring unit, and the other group of guide rods is fixedly connected to the end of the sub distance measuring unit.

5. The conveniently adjustable wall flatness measuring device of claim 3, wherein, the positioning block is arranged on the guide rod. a self-locking block is further arranged on the guide rod; a locking part with a locking slot is arranged on the adjusting support; the locking slot is matched with the self-locking block; and the locking part extends into the main distance measuring unit.

Citation Information

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