An indoor measuring device for architectural design

Abstract

The application discloses a kind of indoor measuring devices for architectural design, it is related to the technical field of architectural design, including first measuring rod, the surface of first measuring rod is equipped with level bubble, the inner wall of first measuring rod is slidably connected with first sliding block;The indoor measuring device for architectural design, by the cooperation of first sliding block, first connecting column, link rod, second connecting column, second measuring rod and moving groove and moving block, so that the device is unfolded into door type frame to measure, the fluctuation of any point on the ground can be directly transmitted by the bottom end of second measuring rod, and the vertical displacement is accurately converted into the jacking action of the corresponding indicating rod directly above by moving block. The operator only needs to push the device at a constant speed, and can obtain a continuous, real-time ground flatness profile in the process of travel, without stopping, reading or recording, simplifying the tedious detection work to visual observation once, greatly improving the detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of architectural design technology, and more specifically to an indoor measuring device for architectural design. Background Technology

[0002] In the fields of architectural design and interior decoration, accurate measurement of floor flatness plays a crucial role in ensuring project quality and improving the comfort of space use. With the continuous development of building technology, the technical requirements for measuring tools are becoming increasingly stringent. Not only is high precision required, but also ease of operation and testing efficiency are emphasized. Currently, the industry generally uses a two-meter straightedge in conjunction with a feeler gauge for sampling inspection of floor flatness. Although this method can assess the condition of the floor to a certain extent, it is limited by its point measurement characteristics and cannot comprehensively and continuously capture the flatness changes of the entire measurement surface. This limitation is particularly significant in large-area construction scenarios, such as the laying of self-leveling cement or fine stone concrete floors.

[0003] However, existing technologies (such as a two-meter straightedge with a feeler gauge) are flawed because they are discrete point measurements, requiring manual point-by-point inspection, recording, and judgment. This is not only time-consuming and labor-intensive but also fails to create a continuous and intuitive cross-sectional impression, easily overlooking local unevenness. The objectivity and completeness of the inspection results heavily depend on the operator's experience and sense of responsibility. In the quality acceptance of large-area ground construction (such as self-leveling cement or fine aggregate concrete flooring), the inefficiency and subjectivity of this point-based sampling method have become bottlenecks restricting construction efficiency and quality control. Especially in situations requiring a rapid and accurate acquisition of the overall flatness of the entire measurement area, how to achieve the transition from point measurement to surface scanning has become an urgent technical problem to be solved. Summary of the Invention

[0004] The purpose of this invention is to provide an indoor measurement device for architectural design, in order to solve the problem that the existing technology for ground flatness detection cannot realize the entire process from detection to visualization in real time, intuitively, and continuously automatically, resulting in low detection efficiency and results that are easily affected by subjective judgment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an indoor measuring device for architectural design, comprising a first measuring rod, a bubble level mounted on the surface of the first measuring rod, a first sliding block slidably connected to the inner wall of the first measuring rod, a first connecting column mounted on one side of the first sliding block, and a connecting rod rotatably connected to the top of the first connecting column;

[0006] The top of the connecting rod is provided with a connecting groove, and multiple sets of sleeves are installed on the inner wall of the connecting groove. An indicator rod is inserted through the inner wall of the sleeve. Two friction rings are installed on the inner wall of the sleeve, and the inner wall of the friction rings is sleeved on the surface of the indicator rod.

[0007] The inner wall of the connecting rod is provided with a moving groove, and a moving block is slidably connected to the inner wall of the moving groove. The moving block can move up and down inside the moving groove. A second connecting post is installed on one side of the moving block, and the top of the second connecting post is located below the indicator rod. A second measuring rod is sleeved on the surface of the second connecting post.

[0008] Furthermore, a second sliding block is installed on one side of the second connecting column, and the surface of the second sliding block is slidably connected to the inner wall of the second measuring rod. A first fixing rod is inserted into one side of the second measuring rod, and one end of the first fixing rod is inserted into the inner wall of the second connecting column.

[0009] Furthermore, a second fixing rod is inserted into one side of the first measuring rod, and one end of the second fixing rod is inserted into the inner wall of the first connecting column.

[0010] Furthermore, a right-angle mounting bracket is slidably connected to the top of the first connecting column, and a positioning rod is slidably connected to one side of the right-angle mounting bracket.

[0011] Furthermore, a limiting groove is provided on one side of the connecting rod, and the inner wall of the limiting groove is sleeved on the surface of the positioning rod.

[0012] Furthermore, two mounting rings are installed on one side of the second measuring rod. A limiting rod is inserted through the inner wall of the mounting ring. A pull rod is installed on the surface of the limiting rod, and the pull rod is located in the middle connecting area of ​​the two mounting rings.

[0013] Furthermore, a limiting ring is installed on one side of the first measuring rod, and the inner wall of the limiting ring is sleeved on the surface of the limiting rod.

[0014] Compared with existing technologies, the indoor measuring device for architectural design provided by this invention, through the cooperation of a first sliding block, a first connecting column, a connecting rod, a second connecting column, a second measuring rod, a moving groove, and a moving block, allows any undulation of the ground to be directly transmitted through the bottom end of the second measuring rod when the device is unfolded into a portal frame for measurement. The moving block then precisely converts this vertical displacement into a lifting action of the corresponding indicator rod directly above. The operator only needs to push the device at a constant speed to obtain a continuous, real-time ground flatness profile during the movement, without the need for pauses, readings, or recording. This simplifies the tedious inspection work into a single visual observation, greatly improving inspection efficiency.

[0015] A dynamic outline formed by the tops of a row of indicator poles transforms abstract ground height data into an intuitive visual image. Any unevenness, whether a bulge (manifested as an elevated indicator pole) or a depression (manifested as an interruption in the outline), visually disrupts the straightness of the outline, making the location and severity of the defect immediately apparent. This design eliminates subjective judgment errors between different operators, facilitating quick consensus between the construction and supervision teams and avoiding disputes caused by differences in human judgment.

[0016] This invention is suitable for rapid acceptance testing of large-area floors such as self-leveling cement and fine aggregate concrete. A single scan can cover the entire measurement width, and a simple translation can cover the entire room, reducing the time required for traditional point-by-point measurements from tens of minutes to just a few minutes. Compared to traditional straightedges that only provide discrete data on gap values ​​at a single point, this invention provides a flatness profile of the entire path, representing a fundamental improvement over existing measurement methods. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is one of the overall structural schematic diagrams provided in the embodiments of the present invention;

[0019] Figure 2 This is the second overall structural schematic diagram provided for an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a right-angle mounting bracket structure provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the connecting rod structure provided in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the friction ring structure provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the limiting groove structure provided in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. First measuring rod; 2. Level bubble; 3. First sliding block; 4. First connecting post; 5. Connecting rod; 6. Sleeve sleeve; 7. Indicator rod; 8. Friction ring; 9. Moving groove; 10. Moving block; 11. Second connecting post; 12. Second measuring rod; 13. Second sliding block; 14. First fixing rod; 15. Second fixing rod; 16. Right-angle mounting bracket; 17. Positioning rod; 18. Limiting groove; 19. Mounting ring; 20. Limiting rod; 21. Limiting ring. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] As attached Figure 1 To be continued Figure 6 As shown:

[0028] Example 1:

[0029] The present invention provides an indoor measuring device for architectural design, including a first measuring rod 1, a level bubble 2 installed on the surface of the first measuring rod 1, a first sliding block 3 slidably connected to the inner wall of the first measuring rod 1, a first connecting column 4 installed on one side of the first sliding block 3, and a connecting rod 5 rotatably connected to the top of the first connecting column 4.

[0030] The top of the connecting rod 5 is provided with a connecting groove, and multiple sets of sleeves 6 are installed on the inner wall of the connecting groove. An indicator rod 7 is inserted through the inner wall of the sleeve 6. Two friction rings 8 are installed on the inner wall of the sleeve 6, and the inner wall of the friction rings 8 is sleeved on the surface of the indicator rod 7.

[0031] The inner wall of the connecting rod 5 is provided with a moving groove 9. A moving block 10 is slidably connected to the inner wall of the moving groove 9, and the moving block 10 can move up and down inside the moving groove 9. A second connecting post 11 is installed on one side of the moving block 10, and the top of the second connecting post 11 is located below the indicator rod 7. A second measuring rod 12 is sleeved on the surface of the second connecting post 11. A second sliding block 13 is installed on one side of the second connecting post 11, and the surface of the second sliding block 13 is slidably connected to the inner wall of the second measuring rod 12. A first fixing rod 14 is inserted into one side of the second measuring rod 12, and one end of the first fixing rod 14 is inserted into the inner wall of the second connecting post 11. A second fixing rod 15 is inserted into one side of the first measuring rod 1, and one end of the second fixing rod 15 is inserted into the inner wall of the first connecting post 1.

[0032] In use, the first measuring rod 1 serves as the reference body of the device, and a spirit level 2 is installed on its surface to adjust and ensure that the entire device is in a horizontal reference state before measurement. The first sliding block 3 is slidably connected to the inner wall of the first measuring rod 1, so that the first connecting column 4, which is fixed to it, can be translated along the length direction of the first measuring rod 1 to achieve preliminary adjustment of the unfolded width. The top of the first connecting column 4 is connected to the connecting rod 5 by a hinge, so that the connecting rod 5 can rotate around the vertical axis, thereby ensuring that the connecting rod 5 and the first measuring rod 1 remain parallel and fit together as one when the device is in the stored state. When unfolded, the connecting rod 5 can rotate to be perpendicular to the first measuring rod 1, forming a vertical rod on one side of the gate-shaped structure. Multiple sets of sleeves 6 are installed at intervals along the length of the connecting groove at the top of the connecting rod 5. Each set of sleeves 6 has an indicator rod 7 inserted through it, which serves as a height reference mark during measurement. Two friction rings 8, symmetrically installed on the inner wall of the sleeves 6, are tightly fitted onto the surface of the indicator rod 7. Using the static friction between the friction rings 8 and the indicator rod 7, the indicator rod 7 can be stably maintained at any extended height when no external force is applied, while under pressure... When the upward thrust is applied, the indicator rod 7 can slide smoothly upward; a moving block 10 is slidably connected in the moving groove 9 opened along the length direction inside the connecting rod 5, and the moving block 10 can move freely in the vertical direction along the moving groove 9; a second connecting post 11 is fixedly connected to one side of the moving block 10, and the top of the second connecting post 11 is located directly below each indicator rod 7, so that when the moving block 10 moves upward, the second connecting post 11 can lift the corresponding indicator rod 7; a second measuring rod 12 is sleeved on the outside of the second connecting post 11, and the second measuring rod 12 can move horizontally along the second connecting post 11. The device moves upward, thereby adjusting the position of the vertical rod on the other side of the gate-shaped measuring frame. The second sliding block 13, fixed to one side of the second connecting column 11, is slidably connected to the inner wall of the second measuring rod 12, ensuring the straightness of the movement of the second measuring rod 12 and enhancing the stability of the overall structure. When the second measuring rod 12 moves to the desired position, it can be locked to the second connecting column 11 by inserting the first fixing rod 14. Similarly, the first connecting column 4 can be locked to the first measuring rod 1 by inserting the second fixing rod 15, thus forming a stable gate-shaped measuring frame in the unfolded state. In actual use, the device is unfolded into a gate shape and locked, placed on the ground to be measured, and the operator holds and pushes the device to move it on the area to be measured. If there is a local protrusion on the ground, the protrusion will push the bottom end of the second measuring rod 12, which will then drive the moving block 10 to move upward along the moving groove 9 through the second connecting column 11. When the moving block 10 moves upward, it will push up the indicator rod 7 above it, causing it to slide upward and extend against the friction of the friction ring 8. Since each indicator rod 7 corresponds to a different point on the ground, when the ground is uneven, the corresponding indicator rod 7 will be lifted to different degrees. By directly observing the difference in the height of the indicator rod 7, the operator can quickly and intuitively determine where the ground is uneven and the relative degree of unevenness.The device cleverly converts minute changes in ground height into visible displacement of indicator rod 7, enabling visualization and real-time detection of flatness.

[0033] Example 2:

[0034] This embodiment is basically the same as the previous embodiment, except that a right-angle mounting bracket 16 is slidably connected to the top of the first connecting column 4, a positioning rod 17 is slidably connected to one side of the right-angle mounting bracket 16, a limiting groove 18 is opened on one side of the connecting rod 5, and the inner wall of the limiting groove 18 is sleeved on the surface of the positioning rod 17.

[0035] In use, the right-angle mounting bracket 16 is slidably connected to the top of the first connecting column 4. This mounting bracket has an L-shaped structure; its vertical side slides up and down with the first connecting column 4 via a dovetail groove or guide rail, while its horizontal side supports and guides the positioning rod 17. The positioning rod 17 is a rigid rod, one end of which slides through the horizontal side of the right-angle mounting bracket 16 and can be temporarily locked using a threaded knob or spring pin, allowing it to extend and retract horizontally. A limiting groove 18 is provided on one side of the connecting rod 5 near its root. This limiting groove 18 is an arc-shaped through groove or blind groove extending along the length of the connecting rod 5, its curvature matching the trajectory of the connecting rod 5 rotating around the first connecting column 4. When the device needs to be unfolded from its stowed state into a door-like shape, the operator can first loosen the locking mechanism of the right-angle mounting bracket 16, slide it upwards along the first connecting column 4 to an appropriate height, and then pull the positioning rod 17 horizontally out of the right-angle mounting bracket 16, precisely inserting its end into the limiting groove 18 on the connecting rod 5. Because the arc length and angle of the limiting groove 18 have been precisely calculated, when the positioning rod 17 is inserted into the far end of the limiting groove 18, it precisely restricts the further rotation of the connecting rod 5. At this time, the connecting rod 5 is stably fixed in the ideal working position perpendicular to the first measuring rod 1, that is, the vertical rod posture of the portal structure. Conversely, when it is necessary to retract the device from the measuring state into a long strip shape, the operator first completely pulls the positioning rod 17 out of the limiting groove 18. At this time, the end of the positioning rod 17 is disengaged from the limiting groove 18, releasing the rotational constraint on the connecting rod 5. Then, the operator manually rotates the connecting rod 5 around its hinge axis, making it gradually parallel to the first measuring rod 1. After the connecting rod 5 is fully reset, the positioning rod 17 is pushed back into the right-angle mounting bracket 16, making it in the retracted state to avoid interference in the retracted state. Through this step-by-step operation, the form transformation of the device can be easily and reliably completed. Then, the operator manually rotates the connecting rod 5 around its hinge axis, making it gradually parallel to the first measuring rod 1. After the connecting rod 5 is fully reset, push the positioning rod 17 back into the right-angle mounting bracket 16 to keep it in the retracted state, preventing interference when stored. This step-by-step operation allows for easy and reliable configuration changes of the device. Operators can quickly and reliably complete configuration changes and lock the working position without the need for external tools or visual estimation, greatly improving ease of use and the repeatability of measurement standards.

[0036] Example 3:

[0037] This embodiment is basically the same as the previous embodiment, except that two mounting rings 19 are installed on one side of the second measuring rod 12, and a limiting rod 20 is inserted through the inner wall of the mounting ring 19. A pull rod is installed on the surface of the limiting rod 20, and the pull rod is located in the middle connecting area of ​​the two mounting rings 19. A limiting ring 21 is installed on one side of the first measuring rod 1, and the inner wall of the limiting ring 21 is sleeved on the surface of the limiting rod 20.

[0038] In use, the two mounting rings 19 are securely installed on the side of the second measuring rod 12 facing the first measuring rod 1 by welding or bolting, with their axis perpendicular to the length direction of the second measuring rod 12. The limiting rod 20 is a metal rod with sufficient rigidity, its body passing through the inner holes of the two mounting rings 19 and able to slide freely along the axial direction of the mounting rings 19. On the body of the limiting rod 20, in the middle area between the two mounting rings 19, a radially protruding pull rod is fixedly installed, which serves as a manual operating handle, facilitating the user to push and pull the limiting rod 20. On the side of the first measuring rod 1 facing the second measuring rod 12, corresponding to the expected position of the limiting rod 20 in the retracted state, a limiting ring 21 is installed, the inner diameter of which forms a tight clearance fit with the diameter of the limiting rod 20. When the measurement is completed and the device needs to be retracted, the operator first ensures that the second measuring rod 12 has slid back, so that the entire device returns to its elongated shape. Subsequently, by holding the pull rod on the limiting rod 20, push it horizontally so that the distal end of the limiting rod 20 is precisely inserted into the inner hole of the limiting ring 21 on the first measuring rod 1. Since the mounting ring 19 provides precise axial guidance for the limiting rod 20, and the limiting ring 21 serves as the final positioning and support structure, after insertion, the limiting rod 20 spans and mechanically locks the relative positions of the first measuring rod 1 and the second measuring rod 12, effectively preventing the second measuring rod 12 from sliding or rotating due to accidental force during movement or storage, thus avoiding structural loosening or component collision damage. When it needs to be unfolded again, simply hold the pull rod and pull the limiting rod 20 out of the limiting ring 21, retracting it completely to the state where it only passes through the two mounting rings 19, immediately releasing the lock on the second measuring rod 12 and restoring its free sliding function. Through a purely mechanical pin-type locking mechanism, the structure is simple, the action is intuitive, and the locking is secure, requiring no additional tools, perfectly resolving the contradiction between portability and stability in retractable measuring devices.

[0039] Application example:

[0040] The application of indoor measurement devices for architectural design in the quality acceptance stage of floor leveling construction in residential interior decoration. At this stage, the construction team needs to conduct flatness tests on large areas of self-leveling cement or fine aggregate concrete floors to ensure they meet design specifications and provide a qualified base for subsequent wood flooring or tile installation. Traditional methods often rely on a two-meter straightedge and feeler gauge for multi-point sampling inspection. This method is inefficient, lacks continuity, and the results depend on manual recording and judgment, making it prone to omissions and disputes. The application of this device aims to achieve a rapid, intuitive, continuous scanning method for floor flatness surveying, greatly improving acceptance efficiency and the objectivity of conclusions.

[0041] Construction quality supervisors brought the device into the room to be inspected. First, the device was deployed and a reference was established: the device, in its folded-up, elongated state, was placed at the edge of the area to be measured. The level bubble 2 on the surface of the first measuring rod 1 was observed, and fine-tuned using shims to ensure the first measuring rod 1 was precisely level, establishing the measurement reference plane. Next, the right-angle mounting bracket 16 at the top of the first connecting column 4 was unlocked and slid to a suitable height. The positioning rod 17 was pulled out horizontally, and its end was inserted into the limiting groove 18 on the side of the connecting rod 5, thus precisely locking the connecting rod 5 in a position perpendicular to the first measuring rod 1, forming a stable gate-shaped measurement frame. Then, the second measuring rod 12 was grasped and pulled out horizontally along the second connecting column 11 until its bottom end was close to the other side boundary of the room. The first fixing rod 14 was inserted to lock the relative position of the second measuring rod 12 and the second connecting column 11, while the second fixing rod 15 was inserted to lock the first connecting column 4 and the first measuring rod 1. At this point, a rigid measurement gate frame adapted to the width of the room was ready.

[0042] It should be noted that the measurement of this device is not a single-point detection when the second measuring rod 12 is fixed, but a scanning measurement of the entire ground is achieved by continuously moving the entire gantry in a direction perpendicular to the first measuring rod 1.

[0043] Once the gantry is ready, place the entire device at the starting end of the ground to be measured, ensuring that the bottom end of the first measuring rod 1 contacts the ground as a measurement reference, while the bottom end of the second measuring rod 12 serves as a dynamic probe. The operator holds both ends of the first measuring rod 1 and pushes the entire device forward at a constant speed in a direction perpendicular to the first measuring rod 1. During this process, the bottom end of the second measuring rod 12 continuously scans the ground area it passes beneath. Any protrusion on the ground will cause the second measuring rod 12 to move upward in real time, triggering the corresponding indicator rod 7 to rise via the second connecting column 11 and the moving block 10.

[0044] Therefore, a continuous profile of the ground flatness from the starting point to the end point can be obtained through a single complete unidirectional push scan, rather than just measuring a single point below the fixed position of the second measuring rod 12. When it is necessary to cover the entire width of the room, simply shift the device along the width direction by one measurement span after the first scan and perform the next scan. This scanning measurement method ensures that the ground within the entire measurement span can be effectively detected.

[0045] At the start of the test, the supervisor stands behind the device, holding both ends of the first measuring rod 1 with both hands, gently lifting the entire gantry, and then steadily placing it at the starting end of the ground to be tested, ensuring that the bottom ends of both the first measuring rod 1 and the second measuring rod 12 are in contact with the ground. At this time, under the action of gravity and the friction force of the friction ring 8, the bottom ends of all the indicator rods 7 are in slight contact with or have a small gap with the upper surface of the second connecting column 11 at the top of the moving block 10, and their initial heights are consistent. The supervisor then begins to slowly and uniformly push the entire device forward in a direction perpendicular to the first measuring rod 1, allowing it to continuously scan the ground like a "scanner".

[0046] During the advancement process, if there is a local protrusion in the ground, the protrusion will first contact and lift the bottom end of the second measuring rod 12. The second measuring rod 12 transmits this upward displacement to the movable block 10 fixed to it through the second connecting post 11, forcing the movable block 10 to slide upward along the moving groove 9 inside the connecting rod 5. The upward-moving movable block 10 then passes the top of the second connecting post 11 and lifts the corresponding indicator rod 7 directly above it. Under the upward thrust, the indicator rod 7 overcomes the static friction force exerted by the two friction rings 8 inside the sleeve 6 and slides upward relative to the sleeve 6, thus significantly increasing the portion of it exposed above the top of the connecting rod 5. The higher the ground protrusion, the greater the lifting force, and the higher the corresponding indicator rod 7 is lifted. Conversely, when the ground is flat and without undulations, the second measuring rod 12 has no vertical displacement, and all indicator rods 7 maintain their initial height.

[0047] Therefore, as the device continues to move, the flatness of the ground it scans is "coded" in real time as a dynamic undulating contour line formed by the tops of a row of indicator rods 7. The supervisor observes perpendicular to the direction of movement; any unevenness in the ground will be visually represented by an abnormal rise of one or more indicator rods 7, clearly marking the location and relative severity of the defect like a row of "signal flags." After completing the scan of one strip, the supervisor can move the device parallel to an adjacent area and repeat the above process until the entire ground to be inspected is covered. After the inspection is completed, the second measuring rod 12 is pushed back, the first fixing rod 14 and the second fixing rod 15 are pulled out, and the positioning rod 17 is pulled out of the limiting groove 18 and retracted, causing the connecting rod 5 to rotate, and the device returns to its compact, elongated shape. Finally, the limiting rod 20 is pushed so that its distal end inserts into the limiting ring 21 on the first measuring rod 1, achieving reliable locking in the retracted state. At this point, the device transforms from a portal frame occupying a two-dimensional plane into a compact, elongated shape occupying only a one-dimensional linear space. Its lateral width and volume are significantly reduced, allowing it to easily fit into a standard toolbox or car trunk. Simultaneously, the cooperation between the limiting rod 20 and the limiting ring 21 effectively prevents the second measuring rod 12 from sliding or rotating due to accidental force during movement or storage, avoiding structural loosening or component collision damage, truly achieving the design goal of easy portability and storage. Through the intuitive demonstration of this device, construction and supervision parties can quickly and uncontroversially confirm and evaluate the flatness of the ground on-site.

[0048] Working principle: First, by observing the level bubble 2 installed on the surface of the first measuring rod 1, adjust and ensure that the entire device is in a horizontal reference state. The operator slides the right-angle mounting bracket 16 on the top of the first connecting column 4 to a suitable position and pulls out the positioning rod 17 horizontally, precisely inserting its end into the limiting groove 18 opened on one side of the connecting rod 5, thereby reliably locking the connecting rod 5 in a position perpendicular to the first measuring rod 1, forming a stable gate-shaped measuring frame.

[0049] It should be noted that the stability of this device during the measurement process is ensured by the following factors:

[0050] First, the operator holds the device with both hands: During measurement, the operator holds both ends of the first measuring rod 1 with both hands, providing human support and balance for the device, similar to pushing an extended handcart, ensuring the dynamic stability of the device during movement.

[0051] Second, the long baseline support of the first measuring rod 1: the bottom end of the first measuring rod 1 contacts the ground along its entire length, forming a stable longitudinal support baseline, which effectively prevents the device from overturning laterally.

[0052] Third, the low-friction linear motion design of the second measuring rod 12: The second measuring rod 12 performs low-friction linear motion on the rigidly connected second connecting column 11. The driving force mainly acts in the horizontal direction, and the overturning torque generated is balanced by the operator's hands and the long baseline of the first measuring rod 1.

[0053] Fourth, overall rigid structure: In the unfolded state, the first measuring rod 1, the connecting rod 5 and the second measuring rod 12 form a stable rigid gate frame through the locking of the first fixing rod 14 and the second fixing rod 15. There is no relative looseness between the components, which ensures the stability and repeatability of the measurement.

[0054] Therefore, under normal operation, the entire system can maintain dynamic stability, which is far superior to that of traditional straightedges with single-point support, and meets the stability requirements of ground flatness measurement.

[0055] Next, the second measuring rod 12 is pulled horizontally outward along the second connecting post 11 to the required width. The relative position of the second measuring rod 12 and the second connecting post 11 is fixed by inserting the first fixing rod 14. At the same time, the first connecting post 4 and the first measuring rod 1 are locked by inserting the second fixing rod 15, thus forming a rigid integrated measuring structure. In actual measurement, the portal frame is placed at the starting end of the ground to be measured, and the operator holds the device and pushes it forward at a constant speed. When there is a local protrusion on the ground, the protrusion will directly act on the bottom end of the second measuring rod 12, forcing it to produce an upward displacement. This displacement is transmitted through the rigidly connected second connecting post 11 to the moving block 10, which is fixed to the second connecting post 11 and slidably connected in the moving groove 9, driving the moving block 10 to slide upward along the moving groove 9. The upward-moving moving block 10 then pushes the bottom end of the indicator rod 7 located directly above it through the upper surface of the second connecting post 11 at its top. When the indicator rod 7 is subjected to an upward thrust, it overcomes the static friction generated by the two friction rings 8 on the inner wall of its outer sleeve 6 and slides upward inside the sleeve 6, thereby significantly increasing the length of the indicator rod 7 extending beyond the top of the connecting rod 5.

[0056] The principle behind this device for measuring ground flatness is not to directly detect the depression itself, but to achieve a comprehensive assessment of flatness by comparing the difference between the ground height along the entire scanning path and a unified reference surface.

[0057] During the measurement process, the bottom surface of the first measuring rod 1 is kept in stable contact with the ground, and the straight line formed by it is the measurement baseline for this scanning path.

[0058] When there is a protrusion on the ground: the protrusion will push the bottom end of the second measuring rod 12 upward, making it higher than the baseline. This upward displacement is transmitted to the moving block 10 through the second connecting column 11, which in turn lifts the corresponding indicator rod 7. The amount of rise of the indicator rod 7 is the positive deviation of the ground at that point from the baseline. The higher the protrusion, the higher the indicator rod 7 is lifted.

[0059] When there is a depression in the ground: the second measuring rod 12 will fall into the depression due to gravity, but its downward movement will not actively pull the indicator rod 7 downward. At this time, the indicator rod 7 corresponding to that point will remain at the height it was at before entering the depression (i.e., the baseline height) under the static friction of the friction ring 8. Therefore, when the device passes through a depressed area, the operator will observe the following phenomenon:

[0060] At the beginning of the recess, indicator 7 maintains its original height (representing the reference plane before entry).

[0061] Inside the recess, the second measuring rod 12 descends and disengages from the upper indicator rod 7. The indicator rod 7 loses its pushing force, but the frictional force keeps it suspended at the height of the reference surface.

[0062] At the end of the depression, the ground rises back to the reference plane, and the second measuring rod 12 is pushed back to its original position, ready to receive the next jacking.

[0063] Ultimately, by observing the dynamic contour line formed by a row of indicator rods 7, the operator can visually determine the flatness of the ground:

[0064] A raised indicator rod indicates that there is a protrusion at that location;

[0065] The gaps or breaks between the indicator bars represent the beginning and end of the recessed area.

[0066] By combining positive recording of convexities with persistent recording of depressions, this device can fully reflect the flatness of the ground, achieving multi-point synchronous, real-time locking recording and display of continuous undulations in the ground.

[0067] Therefore, during the device's movement, the tops of a row of equidistant indicator rods 7 dynamically outline the undulating contours of the ground's longitudinal profile in real time. By visually observing the differences in the extension height of each indicator rod 7, the operator can instantly identify the location and relative severity of ground unevenness without any readings or calculations. After measurement, the device is unlocked by pulling out the first fixing rod 14 and the second fixing rod 15, removing the positioning rod 17 to allow the connecting rod 5 to rotate back to its original position, and locking the slid-retracted second measuring rod 12 through the limiting rod 20 passing through the mounting ring 19 into the limiting ring 21 on the first measuring rod 1. This restores the device to its compact, long, and stowed state. The entire process relies entirely on the mechanical structure's own linkage and positioning functions, achieving a fully mechanical solution for ground flatness measurement, from detection, transmission, amplification to visual indication.

[0068] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An indoor measuring device for architectural design, comprising a first measuring rod (1), characterized in that, A spirit level (2) is installed on the surface of the first measuring rod (1), a first sliding block (3) is slidably connected to the inner wall of the first measuring rod (1), a first connecting post (4) is installed on one side of the first sliding block (3), and a connecting rod (5) is rotatably connected to the top of the first connecting post (4). The top of the connecting rod (5) is provided with a connecting groove, and multiple sets of sleeves (6) are installed on the inner wall of the connecting groove. An indicator rod (7) is inserted through the inner wall of the sleeve (6). Two friction rings (8) are installed on the inner wall of the sleeve (6), and the inner wall of the friction rings (8) is sleeved on the surface of the indicator rod (7). The inner wall of the connecting rod (5) is provided with a moving groove (9), and a moving block (10) is slidably connected to the inner wall of the moving groove (9). The moving block (10) can move up and down inside the moving groove (9). A second connecting column (11) is installed on one side of the moving block (10), and the top of the second connecting column (11) is located below the indicator rod (7). A second measuring rod (12) is sleeved on the surface of the second connecting column (11).

2. The indoor measuring device for architectural design according to claim 1, characterized in that, A second sliding block (13) is installed on one side of the second connecting column (11), and the surface of the second sliding block (13) is slidably connected to the inner wall of the second measuring rod (12). A first fixing rod (14) is inserted into one side of the second measuring rod (12), and one end of the first fixing rod (14) is inserted into the inner wall of the second connecting column (11).

3. The indoor measuring device for architectural design according to claim 1, characterized in that, A second fixing rod (15) is inserted into one side of the first measuring rod (1), and one end of the second fixing rod (15) is inserted into the inner wall of the first connecting column (4).

4. The indoor measuring device for architectural design according to claim 1, characterized in that, The top of the first connecting column (4) is slidably connected to a right-angle mounting bracket (16), and a positioning rod (17) is slidably connected to one side of the right-angle mounting bracket (16).

5. An indoor measuring device for architectural design according to claim 4, characterized in that, A limiting groove (18) is provided on one side of the connecting rod (5), and the inner wall of the limiting groove (18) is sleeved on the surface of the positioning rod (17).

6. The indoor measuring device for architectural design according to claim 1, characterized in that, Two mounting rings (19) are installed on one side of the second measuring rod (12). A limiting rod (20) is inserted through the inner wall of the mounting ring (19). A pull rod is installed on the surface of the limiting rod (20), and the pull rod is located in the middle connection area of ​​the two mounting rings (19).

7. The indoor measuring device for architectural design according to claim 1, characterized in that, A limiting ring (21) is installed on one side of the first measuring rod (1), and the inner wall of the limiting ring (21) is sleeved on the surface of the limiting rod (20).

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