A house building main body wall joint width measuring device and a use method thereof

Abstract

The application discloses a house building main body wall joint width measuring device and a use method, relates to the wall joint width measuring technical field, and aims to solve the technical problem that the traditional tool can only measure the wall joint surface width, and comprises a plug-in rod, a detection mechanism and an auxiliary mechanism. The conical head of the plug-in rod can guide the device to smoothly extend into a narrow or deep wall joint, the detection rod in the detection mechanism can be expanded along the limiting rod under the drive of the auxiliary mechanism, directly contacts the inner wall of the wall joint, and not only adheres to the surface. According to the direct contact measurement of the detection rod and the inner wall, the reading system composed of the gear, the rack, the pointer and the scale is combined, the staff can directly read the real width of the inner wall, does not need to rely on the surface data inference, avoids the measurement deviation caused by the inconsistent inner and outer sizes, accurately obtains the real width data of the inner wall, provides a reliable basis for the wall joint quality judgment, and solves the problem that the traditional tool can only measure the wall joint surface width.

Description

Technical Field

[0001] This invention relates to the field of wall joint width measurement technology, and more specifically, to a device and method for measuring the width of wall joints in building structures. Background Technology

[0002] In building construction, the construction quality of the main walls directly determines the overall structural stability, waterproofing and seepage prevention performance, and service life of the building. Wall joint width, as one of the core indicators for evaluating the quality of wall joints, is crucial for accurate measurement and subsequent construction adjustments, quality acceptance, and hazard identification. Whether it's brick joints in masonry structures, splicing joints in concrete shear walls, or installation joints in prefabricated walls, if the wall joint width exceeds the design specifications, it can easily lead to problems such as wall leakage, reduced thermal insulation performance, and stress concentration cracking. If the width is too narrow, it may result in weak wall joints, affecting the overall load-bearing capacity. Therefore, accurate measurement of wall joint width is an indispensable and critical step in the quality inspection of building construction projects.

[0003] In the wall construction and quality inspection stages of building construction projects, wall joints are not simply straight gaps, but complex structures influenced by multiple factors such as construction techniques, material properties, and external forces. Traditional measuring tools, such as rulers and feeler gauges, are limited to surface contact measurement. They can only read width data by the tool's contact with the wall joint surface, but cannot perceive the true shape inside the joint. This deficiency directly leads to a serious discrepancy between the measured data and the actual situation when faced with the common problem of inconsistent internal and external dimensions of wall joints in building structures.

[0004] Traditional measuring tools, such as rulers and feeler gauges, can only measure the width of wall joints on the surface. However, in actual building structures, wall joints often exhibit inconsistencies between their internal and external dimensions. For example, the surface may narrow due to construction compression, while the interior may widen due to insufficient mortar filling, or vice versa. These tools cannot penetrate deep into the wall joint to contact the inner wall, resulting in measurements that only represent the surface condition and fail to reflect the true width of the inner wall. This affects the assessment of the actual quality of the wall joint and may lead to deviations in subsequent repair plans. Therefore, we propose a device and method for measuring the width of building structure wall joints. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, adapt to practical needs, and provide a device for measuring the width of wall joints in building structures, so as to solve the technical problem that current traditional tools can only measure the surface width of wall joints.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device for measuring the width of wall joints in building structures, comprising a probe, a detection mechanism, and an auxiliary mechanism. The probe is hollow, and an installation groove is formed on the inner side of the insertion end of the probe. A limit rod is fixedly installed inside the installation groove. The detection mechanism includes a detection rod, an arc-shaped piece, and a toothed block. The detection rod is slidably installed on the outside of the limit rod. The arc-shaped piece is fixedly installed on the outside of the detection rod. The toothed block is fixedly installed on the outer arc surface of the arc-shaped piece, with the toothed structure facing the outer arc surface of the arc-shaped piece. The auxiliary mechanism includes a fixed ring and a rotating wheel. The fixed ring has a limit groove formed by a vertical end and an arc-shaped end inside. The rotating wheel is engaged inside the limit groove. The auxiliary mechanism can convert rotational motion into linear motion of the detection mechanism.

[0007] Preferably, the detection mechanism further includes a sliding disk, which is slidably installed inside the insertion rod. The detection rod is rotatably installed on the periphery of the sliding disk. A first threaded sleeve is slidably installed inside the sliding disk. A first threaded rod is threaded inside the first threaded sleeve. A tapered head is fixedly installed on the outside of the first threaded rod. A first spring is fixedly installed between the sliding disk and the first threaded sleeve. A connecting frame is fixedly installed on the side of the sliding disk away from the insertion end. A sliding groove is opened at the corresponding position of the detection rod and the limiting rod. The limiting rod is slidably installed inside the sliding groove.

[0008] Preferably, the auxiliary mechanism further includes a second fixed sleeve, which is fixedly installed on the outside of the connecting frame. A second threaded rod is threaded inside the second fixed sleeve, and a gear is fixedly installed on the outside of the second threaded rod. A fixed ring is fixedly installed on the outside of the gear. A fixed base is fixedly installed on the side of the insertion rod away from the insertion section. A knob is rotatably installed on the front of the fixed base. A second spring is fixedly installed inside the knob. A fixed frame is fixedly installed at the bottom of the second spring. A rotating wheel is rotatably installed inside the fixed frame. A telescopic rod is fixedly installed between the fixed frame and the knob. The telescopic rod is coaxially arranged with the second spring.

[0009] Preferably, it also includes a fixing frame, which is fixedly installed on the side of the insertion rod away from the insertion end. A rack that meshes with a gear is slidably installed inside the fixing frame, and a pointer is fixedly installed on the outside of the rack. The pointer corresponds to a scale fixedly installed on the outside of the fixing frame.

[0010] Preferably, the conical head is rotatably mounted on the insertion end of the plug.

[0011] Preferably, the first spring is sleeved on the outside of the first threaded sleeve.

[0012] The present invention also provides a method for measuring the width of wall joints in a building using the above-mentioned building wall joint width measuring device, comprising the following steps:

[0013] S100. Preparation before measurement and device insertion: Check whether all parts of the device are intact, ensure that the probe is fully retracted, observe the wall joint to be measured, select a suitable measurement point, avoid obviously loose or damaged areas, hold the operating end of the insertion rod, align the conical head with the opening of the wall joint, and smoothly insert the device along the direction of the wall joint until the fixing frame is completely attached to the outer surface of the wall, and confirm that the insertion depth of the device is consistent and there is no skewness.

[0014] S200, wall crack cleaning and probe arm deployment: Slowly turn the knob clockwise. There should be no significant resistance in the initial stage. As the knob is turned, the probe arm begins to expand outward along the trajectory of the limit rod. The toothed block first contacts the inner wall of the wall crack, scraping off mortar, dust and other attached materials. Continue to turn the knob until you feel a significant change in resistance.

[0015] S300, Contact Judgment and Width Reading: When the knob suddenly produces a free-spinning feel accompanied by a clicking sound, stop rotating immediately. This state indicates that the rotating wheel has slipped out of the limit groove, and the arc-shaped piece at the end of the probe rod has made full contact with the cleaned inner wall under standard pressure to keep the device stable. Read the value indicated by the pointer on the scale. The measurement can be repeated multiple times to take the average value to improve accuracy.

[0016] S400. Device Retraction and Post-Processing: Slowly turn the knob counterclockwise. Initially, you will feel it spinning freely. Continue turning until the rotating wheel re-engages into the vertical end of the limiting groove. The probe will begin to retract and completely detach from the inner wall of the wall gap. Smoothly pull out the device, clean the toothed block, and record the measurement data, including the measurement location, gap width, and any special notes.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention, through the conical head of the insertion end of the probe, guides the device smoothly into narrow or deep wall cracks. Simultaneously, the probe rod in the detection mechanism can expand along the limiting rod under the drive of the auxiliary mechanism, directly contacting the inner wall of the wall crack, rather than merely adhering to the surface. Relying on the direct contact measurement between the probe rod and the inner wall, combined with the reading system composed of gears, racks, pointers, and scales, workers can intuitively read the true width of the inner wall without relying on surface data for inference. This avoids measurement deviations caused by inconsistencies in internal and external dimensions, accurately obtaining the true width data of the inner wall, providing a reliable basis for judging the quality of wall cracks, and solving the problem that traditional tools can only measure the surface width of wall cracks.

[0019] 2. The present invention also uses a toothed block fixed on the outer arc surface of the arc-shaped piece. During the expansion of the probe, the toothed block can preferentially contact the inner wall of the wall joint. Its toothed structure can actively scrape away the mortar, floating dust and other debris attached to the inner wall, ensuring that the contact surface between the probe and the inner wall of the wall joint is clean and flat. This avoids measurement errors caused by debris filling from the source and further improves the accuracy of the measurement results.

[0020] 3. This invention also achieves automatic limiting through the coordinated action of the first spring, the second spring, the rotating wheel, and the fixed ring. When the probe has fully contacted the inner wall of the wall joint, the sliding disc pulls outward, squeezing the first spring and generating significant resistance. The rotating wheel, engaged in the limiting groove of the fixed ring, is affected by this resistance and squeezes the second spring and the telescopic rod, moving upward along the arc-shaped end of the limiting groove and disengaging from the limiting position. This causes the knob to enter a free-spinning state, stopping the rotation of the second threaded rod. This structure avoids over-expansion due to operator error, preventing damage to the wall or temporary deformation of the wall joint, while ensuring complete contact between the probe and the inner wall, providing dual protection for measurement accuracy and wall safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 3 This is an exploded view of the detection mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the probe rod and related structures of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 6 This is a schematic diagram of the second threaded rod and its related structures according to the present invention;

[0027] Figure 7 This is a front cross-sectional view of the auxiliary mechanism of the present invention;

[0028] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B;

[0029] Figure 9 This is a schematic diagram of the fixing ring and related structures of the present invention.

[0030] The following are the labels in the diagram: 1. Insert rod; 11. Mounting groove; 111. Limiting rod; 2. Detection mechanism; 21. Sliding disc; 211. Connecting frame; 22. Detecting rod; 221. Sliding groove; 23. Arc-shaped piece; 231. Toothed block; 24. First threaded sleeve; 241. First threaded rod; 242. Conical head; 243. First spring; 3. Auxiliary mechanism; 31. Second fixed sleeve; 311. Second threaded rod; 312. Gear; 32. Fixed ring; 321. Limiting groove; 322. Vertical end; 323. Arc-shaped end; 33. Fixed base; 34. Knob; 341. Second spring; 342. Telescopic rod; 343. Fixed frame; 344. Rotating wheel; 35. Rack; 351. Pointer; 4. Fixed frame; 41. Ruler. Detailed Implementation

[0031] Example: Figures 1 to 9 As shown, the present invention relates to a device for measuring the width of wall joints in a building structure, comprising an insertion rod 1, a detection mechanism 2, and an auxiliary mechanism 3, and a fixing frame 4. The fixing frame 4 is fixedly installed on the side of the insertion rod 1 away from the insertion end. The insertion rod 1 is hollow, and an installation groove 11 is formed on the inner side of the insertion end of the insertion rod 1. A limit rod 111 is fixedly installed inside the installation groove 11. The detection mechanism 2 includes a detection rod 22, an arc-shaped piece 23, and a toothed block 231. The detection rod 22 is slidably installed on the outside of the limit rod 111, the arc-shaped piece 23 is fixedly installed on the outside of the detection rod 22, and the toothed block 231 is fixedly installed on the outer arc surface of the arc-shaped piece 23, with the toothed structure facing the outer arc surface of the arc-shaped piece 23. The auxiliary mechanism 3 includes a fixing ring 32 and a rotating wheel 344. The fixing ring 32 has a limiting groove 321 formed by the vertical end 322 and the arc end 323 inside, which rotates... Wheel 344 is engaged inside limiting groove 321. Auxiliary mechanism 3 can convert rotational motion into linear motion of detection mechanism 2. The present invention, through the conical head 242 at the insertion end of the insertion rod 1, can guide the device to smoothly extend into narrow or deep wall gaps. At the same time, the detection rod 22 in detection mechanism 2 can expand along limiting rod 111 under the drive of auxiliary mechanism 3, directly contacting the inner wall of the wall gap, rather than just adhering to the surface. Relying on the direct contact measurement between the detection rod 22 and the inner wall, combined with the reading system composed of gear 312, rack 35, pointer 351 and scale 41, the staff can intuitively read the true width of the inner wall without relying on surface data for inference, avoiding measurement deviations caused by inconsistencies in inner and outer dimensions, accurately obtaining the true width data of the inner wall, providing a reliable basis for judging the quality of the wall gap, and solving the problem that traditional tools can only measure the surface width of the wall gap.

[0032] Furthermore, such as Figures 3 to 5As shown, the detection mechanism 2 also includes a sliding disk 21, which is slidably installed inside the insertion rod 1. The detection rod 22 is rotatably installed around the sliding disk 21. A first threaded sleeve 24 is slidably installed inside the sliding disk 21. A first threaded rod 241 is threadedly installed inside the first threaded sleeve 24. A conical head 242 is fixedly installed on the outside of the first threaded rod 241. The conical head 242 is rotatably installed at the insertion end of the insertion rod 1. A first spring 243 is fixedly installed between the sliding disk 21 and the first threaded sleeve 24. The first spring 243 is sleeved on the outside of the first threaded sleeve 24. The sliding disk 21 is away from the insertion end. A connecting bracket 211 is fixedly installed on one side of the inlet. A sliding groove 221 is provided at the corresponding position of the probe rod 22 and the limiting rod 111. The limiting rod 111 is slidably installed inside the sliding groove 221. A toothed block 231 is fixed to the outer arc surface of the arc-shaped piece 23. During the expansion of the probe rod 22, the toothed block 231 can preferentially contact the inner wall of the wall joint. Its toothed structure can actively scrape off the mortar, floating dust and other debris attached to the inner wall, ensuring that the contact surface between the probe rod 22 and the inner wall of the wall joint is clean and flat. This avoids measurement errors caused by debris filling from the source and further improves the accuracy of the measurement results.

[0033] Furthermore, such as Figures 6 to 9As shown, the auxiliary mechanism 3 also includes a second fixed sleeve 31, which is fixedly installed on the outside of the connecting frame 211. A second threaded rod 311 is threaded inside the second fixed sleeve 31, and a gear 312 is fixedly installed on the outside of the second threaded rod 311. A fixed ring 32 is fixedly installed on the outside of the gear 312. A fixed base 33 is fixedly installed on the side of the insertion rod 1 away from the insertion section. A knob 34 is rotatably installed on the front of the fixed base 33. A second spring 341 is fixedly installed inside the knob 34. A fixed frame 343 is fixedly installed at the bottom of the second spring 341. A rotating wheel 344 is rotatably installed inside the fixed frame 343. A telescopic rod 342 is fixedly installed between the fixed frame 343 and the knob 34. The telescopic rod 342 is coaxially arranged with the second spring 341. Inside the fixed frame 4, a rack 35 is slidably installed, meshing with a gear 312. A pointer 351 is fixedly installed on the outside of the rack 35, corresponding to a scale 41 fixedly installed on the outside of the fixed frame 4. Automatic limiting is achieved through the coordinated action of the first spring 243, the second spring 341, the rotating wheel 344, and the fixed ring 32. When the probe 22 has fully contacted the inner wall of the wall joint, the sliding disc 21 pulls outward, squeezing the first spring 243 and generating significant resistance. The rotating wheel 344, engaged in the limiting groove 321 of the fixed ring 32, is affected by this resistance and squeezes the second spring 341 and the telescopic rod 342, moving upward along the arc-shaped end 323 of the limiting groove 321 and disengaging from the limiting position, causing the knob 34 to enter a free-spinning state and stopping the rotation of the second threaded rod 311. This structure avoids over-expansion due to operator error, preventing damage to the wall or temporary deformation of the wall joint, while ensuring complete contact between the probe 22 and the inner wall, providing dual protection for measurement accuracy and wall safety.

[0034] A method for using a device for measuring the width of wall joints in a building structure includes the following steps:

[0035] S100. Pre-measurement preparation and device insertion: Check that all parts of the device are intact, ensure that the probe 22 is fully retracted, observe the wall seam to be measured, select a suitable measurement point, avoid obviously loose or damaged areas, hold the operating end of the insertion rod 1, align the conical head 242 with the opening of the wall seam, and smoothly insert the device along the direction of the wall seam until the fixing frame 4 is completely attached to the outer surface of the wall, and confirm that the device is inserted to a consistent depth and without any skewness.

[0036] S200, Wall Crack Cleaning and Detection Arm Deployment: Slowly turn the knob 34 clockwise. There should be no significant resistance in the initial stage. As the rotation continues, the detection rod 22 begins to expand outward along the trajectory of the limit rod 111. The toothed block 231 first contacts the inner wall of the wall crack, scraping off mortar, floating dust and other attached materials. Continue to turn the knob 34 until a significant change in resistance is felt.

[0037] S300, Contact Judgment and Width Reading: When the knob 34 suddenly produces a free-spinning feeling accompanied by a clicking sound, stop rotating immediately. This state indicates that the rotating wheel 344 has slid out of the limit groove 321, and the arc-shaped piece 23 at the end of the probe 22 has made full contact with the cleaned inner wall under standard pressure to keep the device stable. Read the value indicated by the pointer 351 on the scale 41. The measurement can be repeated multiple times to take the average value to improve accuracy.

[0038] S400. Device Retraction and Subsequent Processing: Slowly turn the knob 34 counterclockwise. Initially, you will feel it spinning freely. Continue turning until the rotating wheel 344 re-engages into the vertical end 322 of the limiting groove 321. The probe 22 will begin to retract and completely detach from the inner wall of the wall gap. Smoothly pull out the device, clean the toothed block 231, and record the measurement data, including the measurement position, gap width value, and special notes.

[0039] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A device for measuring the width of wall joints in building structures, characterized in that, include: Insert rod (1), the insert rod (1) is hollow, and an installation groove (11) is provided on the inner side of the insertion end of the insert rod (1). A limit rod (111) is fixedly installed inside the installation groove (11). The detection mechanism (2) includes a detection rod (22), an arc-shaped piece (23) and a toothed block (231). The detection rod (22) is slidably mounted on the outside of the limiting rod (111). The arc-shaped piece (23) is fixedly mounted on the outside of the detection rod (22). The toothed block (231) is fixedly mounted on the outer arc surface of the arc-shaped piece (23), and the toothed structure faces the outer arc surface of the arc-shaped piece (23). The auxiliary mechanism (3) includes a fixed ring (32) and a rotating wheel (344). The fixed ring (32) has a limiting groove (321) formed by a vertical end (322) and an arc end (323) inside. The rotating wheel (344) is engaged inside the limiting groove (321). The auxiliary mechanism (3) can convert rotational motion into linear motion of the detection mechanism (2); The detection mechanism (2) further includes a sliding disk (21), which is slidably installed inside the insertion rod (1). The detection rod (22) is rotatably installed on the periphery of the sliding disk (21). A first threaded sleeve (24) is slidably installed inside the sliding disk (21). A first threaded rod (241) is threaded inside the first threaded sleeve (24). A tapered head (242) is fixedly installed on the outside of the first threaded rod (241). A first spring (243) is fixedly installed between the sliding disk (21) and the first threaded sleeve (24). A connecting frame (211) is fixedly installed on the side of the sliding disk (21) away from the insertion end. The probe rod (22) is provided with a sliding groove (221) at the corresponding position of the limiting rod (111), and the limiting rod (111) is slidably installed inside the sliding groove (221); The auxiliary mechanism (3) further includes a second fixed sleeve (31), which is fixedly installed on the outside of the connecting frame (211). A second threaded rod (311) is threaded inside the second fixed sleeve (31), and a gear (312) is fixedly installed on the outside of the second threaded rod (311). The fixed ring (32) is fixedly installed on the outside of the gear (312). A fixed base (33) is fixedly installed on the side of the insertion rod (1) away from the insertion section. A knob (34) is rotatably installed on the front of the fixed base (33). A second spring (341) is fixedly installed inside the knob (34). A fixed frame (343) is fixedly installed at the bottom of the second spring (341). The rotating wheel (344) is rotatably installed inside the fixed frame (343). A telescopic rod (342) is fixedly installed between the fixing frame (343) and the knob (34), and the telescopic rod (342) is coaxially arranged with the second spring (341); It also includes a fixing frame (4), which is fixedly installed on the side of the insertion rod (1) away from the insertion end. A rack (35) that meshes with the gear (312) is slidably installed inside the fixing frame (4). A pointer (351) is fixedly installed on the outside of the rack (35), and the pointer (351) corresponds to a scale (41) fixedly installed on the outside of the fixing frame (4). The conical head (242) at the insertion end of the insertion rod (1) can guide the device to smoothly extend into narrow or deep wall gaps. At the same time, the detection rod (22) in the detection mechanism (2) can expand along the limiting rod (111) under the drive of the auxiliary mechanism (3) and directly contact the inner wall of the wall gap. When the detection rod (22) has completely contacted the inner wall of the wall gap, the sliding disc (21) will pull outward and squeeze the first spring (243) to generate obvious resistance. The rotating wheel (344) stuck in the limiting groove (321) of the fixed ring (32) will be affected by the resistance and squeeze the second spring (341) and the telescopic rod (342). It will move up along the arc end (323) of the limiting groove (321) and break away from the limit, so that the knob (34) enters the free-running state and stops driving the second threaded rod (311) to rotate.

2. The device for measuring the width of wall joints in a building structure according to claim 1, characterized in that, The conical head (242) is rotatably mounted on the insertion end of the insert rod (1).

3. The device for measuring the width of wall joints in a building structure according to claim 2, characterized in that, The first spring (243) is sleeved on the outside of the first threaded sleeve (24).

4. A method for measuring the width of wall joints in a building using the wall joint width measuring device according to any one of claims 1-3, characterized in that, Includes the following steps: S100. Preparation before measurement and device insertion: Check whether each part of the device is intact, ensure that the probe (22) is fully retracted, observe the wall joint to be measured, select a suitable measurement point, avoid obviously loose or damaged areas, hold the operating end of the insertion rod (1), align the conical head (242) with the opening of the wall joint, and smoothly insert the device along the direction of the wall joint until the fixing frame (4) is completely attached to the outer surface of the wall, and confirm that the device insertion depth is consistent and there is no skewness. S200, Cleaning wall joints and deploying the probe arm: Slowly turn the knob (34) clockwise. There should be no significant resistance in the initial stage. As the rotation continues, the probe (22) begins to expand outward along the trajectory of the limit rod (111). The toothed block (231) first contacts the inner wall of the wall joint, scraping off the mortar and floating dust. Continue to turn the knob (34) until you feel a significant change in resistance. S300, Contact Judgment and Width Reading: When the knob (34) suddenly produces a free spin feeling and is accompanied by a clicking sound, stop rotating immediately. This state indicates that the rotating wheel (344) has slid out of the limit groove (321), and the arc-shaped piece (23) at the end of the probe (22) has made full contact with the cleaned inner wall under standard pressure to keep the device stable. Read the value indicated by the pointer (351) on the scale (41). The measurement can be repeated multiple times to take the average value to improve the accuracy. S400, Device Retrieval and Subsequent Processing: Slowly turn the knob (34) counterclockwise. Initially, you will feel it spinning freely. Continue turning until the rotating wheel (344) re-engages in the limiting groove (321). The vertical end (322) limits it. The probe rod (22) begins to retract and completely detaches from the inner wall of the wall gap. Pull the device out smoothly, clean the toothed block (231), and record the measurement data, including the measurement position, gap width value, and special case notes.

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