A housing detection level

The use of a limiting rack and push rod structure to quickly adjust the length of the level's legs solves the problem of low efficiency in adjusting the leg length in existing technologies, thereby improving detection efficiency and accuracy.

CN224414827UActive Publication Date: 2026-06-26SHANGHAI PUDONG HOUSING QUALITY INSPECTION CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI PUDONG HOUSING QUALITY INSPECTION CO LTD
Filing Date
2025-09-03
Publication Date
2026-06-26

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Abstract

The application relates to the technical field of house detection equipment, and discloses a housing detection level, which comprises a base, a level body is arranged at the top of the base, three supporting leg outer frames are hingedly connected to the bottom of the base through three hinged frames, and supporting leg inner rods are inserted into the middle inner wall of the supporting leg outer frames. The level is used for house detection, the push rod is pushed, the end of the limiting rod is slid out from between two adjacent teeth of the limiting rack, the limiting rack is released from the limiting rod, the supporting leg inner rod is pulled to slide in the supporting leg outer frame, the overall length between the supporting leg inner rod and the supporting leg outer frame is adjusted, the length of the supporting leg can be quickly adjusted according to the placement condition of the ground with a large height difference, the level can be quickly adjusted and placed on the ground with a large height difference, a certain supporting leg does not need to be adjusted for a long time, and the working efficiency of house detection is improved.
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Description

Technical Field

[0001] This application relates to the field of building inspection equipment technology, specifically a level for building inspection. Background Technology

[0002] Building quality inspection involves using specific technical means and methods to examine and measure the structural quality of a building, and to implement dynamic monitoring. Also known as building quality assessment, building inspection refers to the process by which qualified testing organizations inspect and evaluate the quality of a building and issue a report. The testing technologies involved include building inspection technology, structural reinforcement technology, engineering testing and monitoring technology, and upstream and downstream technologies such as nationally accredited laboratories. Integrating these, it can be called comprehensive building inspection technology. Among these technologies, a level instrument can be used for building inspection.

[0003] An existing patent (publication number: CN216479937U) discloses a level instrument for building inspection in the field of building inspection technology. It includes a base plate and a level instrument body. A first connecting column is connected through the upper end face of the base plate. An upper opening groove is formed on the upper end face of the first connecting column, and a sliding groove is formed within the upper opening groove. A slider is slidably connected within the sliding groove, and the slider is disposed within the sliding groove. A lifting column is fixedly connected to the outer end face of the slider. This invention, by setting up a damping rotating shaft, a support frame, a side connecting plate, a through hole, a lower connecting block, a limiting groove, a limiting block, a descending column, a threaded column, a rotating plate, and a conical column, can achieve the effect of rotating the rotating plate, thereby driving the threaded column to rotate. The rotation of the threaded column, in turn, drives the descending column to move upward or downward. The descending column drives the limiting block to move upward or downward within the limiting groove, and the conical column to move upward or downward. This achieves the effect of the level instrument body accurately measuring on uneven floors in a renovated interior.

[0004] The above solution cannot quickly adjust the length of multiple outriggers according to ground placement conditions with large height differences. When encountering ground placement conditions with large height differences, it is necessary to tighten the threaded post of the corresponding outrigger for a long time in order to make the lengths of multiple outriggers match each other to adapt to the ground placement conditions with large height differences. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a level instrument for building inspection, which features the ability to quickly adjust the length of its legs according to ground placement conditions with significant height differences. This allows the level instrument to be quickly adjusted and positioned even under conditions of large height differences, eliminating the need for lengthy adjustments to any single leg and improving the efficiency of building inspection. It also solves the problem that, in practice, it is impossible to quickly adjust the length of multiple legs to accommodate ground placement conditions with significant height differences, and that in such cases, it is necessary to spend considerable time tightening the threaded posts of the corresponding legs to ensure that the lengths of multiple legs are coordinated to fit the different ground placement conditions.

[0006] To achieve the goal of quickly adjusting the length of the support legs according to ground conditions with large height differences, allowing the level instrument to be quickly adjusted and placed even with significant height differences, without requiring lengthy length adjustments to any single support leg, thus improving the efficiency of building inspection, this application provides the following technical solution: A level instrument for building inspection, comprising a base, with the level instrument body mounted on the top of the base, and three support leg frames hinged to the bottom of the base via three hinge brackets. An inner rod for the support leg is inserted into the inner wall of the middle section. The outer surface of the middle section of the inner rod is quadrilateral in shape. The shape of the outer surface of the middle section of the inner rod is adapted to the shape of the inner wall of the middle section of the support leg frame. A limiting rack is provided on one side of the inner wall of the side of the support leg frame. A limiting plate is provided at one end of the inner rod inside the support leg frame. A push rod is inserted into the inner wall of the middle section of the limiting plate. A limiting rod is provided at one end of the push rod inside the support leg frame. The end of the limiting rod is inserted between two adjacent teeth of the limiting rack.

[0007] The above solution involves pushing the push rod, causing the end of the limiting rod to slide out between two adjacent teeth of the limiting rack. This releases the limiting rack from restricting the limiting rod, allowing the inner rod of the outrigger to slide significantly within the outer frame. This adjusts the overall length between the inner rod and the outer frame, enabling rapid adjustment of the outrigger length based on varying ground heights. This allows the level instrument to be quickly adjusted and placed even with significant height differences, eliminating the need for lengthy adjustments to individual outriggers and improving the efficiency of building inspection.

[0008] Furthermore, the outer surface of the middle part of the push rod is quadrilateral, and the shape of the outer surface of the middle part of the push rod is adapted to the shape of the inner wall of the middle part of the limiting plate.

[0009] With the above solution, the outer surface of the middle part of the push rod is quadrilateral and matches the shape of the inner wall of the middle part of the limiting plate. This ensures that the push rod will not rotate when sliding inside the limiting plate, and avoids the limiting rod from being twisted at an angle. This allows the end of the limiting rod to be stably inserted into or disengaged from the teeth of the limiting rack when the push rod is pressed, thus ensuring the stability and reliability of the leg length adjustment operation.

[0010] Furthermore, the end of the push rod away from the limiting rod extends to the outer side of the leg frame, and a pressing plate is provided at the end of the push rod away from the limiting rod. A spring is provided between the pressing plate and the limiting plate, with one end of the spring located on one side of the pressing plate and the other end of the spring located on one side of the limiting plate.

[0011] With the above solution, the push rod extends to the outside of the outrigger frame and is equipped with a pressing plate, which facilitates the operator to apply external force. The spring is located between the pressing plate and the limiting plate. After the operator presses the pressing plate to disengage the limiting rod from the limiting rack, releasing the pressing plate allows the spring to push the pressing plate back to its original position, causing the limiting rod to re-insert into the teeth of the limiting rack. This achieves automatic locking of the outrigger inner rod. Furthermore, the spring's thrust ensures that the limiting rod is stably inserted into the teeth of the limiting rack, preventing the end of the limiting rod from easily disengaging from the teeth and thus ensuring the overall length between the outrigger frame and the outrigger inner rod can be limited. This simplifies the operation process, improves adjustment efficiency, and ensures the stability of the outrigger frame and the outrigger inner rod in supporting the level.

[0012] Furthermore, the ends of the limiting rod have rounded corners on both sides facing the pressing plate.

[0013] The above solution, with rounded edges on both sides of the limit rod end, reduces friction and resistance when inserted between the teeth of the limit rack, allowing the limit rod to be inserted more smoothly, reducing operational difficulty, and also reducing wear between components and extending service life.

[0014] Furthermore, a push frame is slidably provided on the outer surface of the middle part of the support leg frame, and a fixing block provided on the inner wall of the push frame passes through the inner side wall of the support leg frame and is provided on the outer surface of the middle part of the support leg inner rod. The four corner edges of the outer surface of the middle part of the push frame are rounded.

[0015] With the above solution, the push frame is slidably set on the outer surface of the middle part of the outrigger frame, and the inner wall fixing block is connected to the inner rod of the outrigger. The operator can move the inner rod of the outrigger within the outrigger frame by pushing the push frame. This can move the inner rod of the outrigger within the outrigger frame in a relatively effortless and convenient way. The four corners of the outer surface of the middle part of the push frame are rounded to avoid scratching the operator during operation, thus improving the safety and comfort of use.

[0016] Furthermore, the bottom end of the inner rod of the outrigger is rotatably provided with a threaded rod, and the outer surface of the middle part of the threaded rod is threadedly connected to the inner wall of the support foot.

[0017] Through the above scheme, after the overall length of the inner rod of the outrigger is initially adjusted, the height of the support foot is finely adjusted by the threaded engagement between the threaded rod and the support foot, thereby further improving the horizontal accuracy of the level and meeting the high-precision requirements of building inspection.

[0018] Furthermore, one end of the support leg is connected to a limiting frame via a fixing rod. The inner wall of the middle part of the limiting frame is slidably disposed on the outer surface of one end of the inner rod of the support leg. The shape of the inner wall of the middle part of the limiting frame is adapted to the shape of the outer surface of one end of the inner rod of the support leg.

[0019] With the above solution, the support foot is slidably set on the outer surface of one end of the inner rod of the support leg through the limiting frame connected by the fixed rod, and the two are adapted in shape. This can fix the angle of the support foot, preventing the support foot from rotating due to the rotation of the screw and threaded rod, which would make it impossible to adjust the distance between the support foot and the threaded rod. At the same time, fixing the angle of the support foot can prevent the support foot from rotating and affecting the stability of the contact between the bottom end of the support foot and the ground support point, thus ensuring the stability of the level instrument and improving the accuracy of the test results.

[0020] Furthermore, a connecting ring is provided on the outer surface of one side of the middle portion of the threaded rod, and an anti-slip strip is provided on the outer surface of the middle portion of the connecting ring.

[0021] The above solution features a connecting ring on one side of the outer surface of the threaded rod, which facilitates the operator's rotation of the threaded rod. The anti-slip strip on the outer surface of the connecting ring increases the friction between the operator's hand and the connecting ring, allowing the threaded rod to rotate stably via the connecting ring. This improves the ease and stability of fine-tuning the support feet.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This type of building inspection level uses a push rod to slide the end of a limiting rod out between two adjacent teeth of a limiting rack, releasing the limiting rack from the limiting rod. This allows the inner rod of the support leg to slide significantly within the outer frame, adjusting the overall length between the inner rod and the outer frame. This enables rapid adjustment of the support leg length based on ground conditions with significant height differences, allowing the level to be quickly adjusted even under varying ground elevations. This eliminates the need for lengthy adjustments to individual support legs, thus improving the efficiency of building inspection work. Attached Figure Description

[0024] Figure 1This is a three-dimensional structural diagram of this application;

[0025] Figure 2 This is a schematic diagram of the front structure of this application;

[0026] Figure 3 This is a schematic diagram showing the connection between the inner rod of the outrigger and the push frame in this application;

[0027] Figure 4 This is a schematic cross-sectional view of a partial structure of this application from the right side;

[0028] Figure 5 This is an exploded view of a partial structure of this application.

[0029] In the picture:

[0030] 1. Base; 2. Level instrument body; 3. Outer frame of the support leg; 4. Inner rod of the support leg; 5. Limiting rack; 6. Limiting rod; 7. Push rod; 8. Pressing plate; 9. Spring; 10. Limiting plate; 11. Threaded rod; 12. Support foot; 13. Limiting frame; 14. Connecting ring; 15. Pushing frame. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 3 and Figure 4 This embodiment of a building inspection level includes a base 1, a level body 2 on the top of the base 1, and three support leg frames 3 hinged to the bottom of the base 1 via three hinge brackets. Support leg inner rods 4 are inserted into the inner wall of the middle part of the support leg outer frame 3. The outer surface of the middle part of the support leg inner rod 4 is quadrilateral in shape, and the shape of the outer surface of the middle part of the support leg inner rod 4 is adapted to the shape of the inner wall of the middle part of the support leg outer frame 3. A limiting rack 5 is provided on one side of the inner wall of the side of the support leg outer frame 3. A limiting plate 10 is provided at one end of the support leg inner rod 4 inside the support leg outer frame 3. A push rod 7 is inserted into the inner wall of the middle part of the limiting plate 10. A limiting rod 6 is provided at one end of the push rod 7 inside the support leg outer frame 3. The end of the limiting rod 6 is inserted between two adjacent teeth of the limiting rack 5.

[0033] Please see Figure 1 , Figure 4 and Figure 5The outer surface of the middle part of the push rod 7 is quadrilateral, and the shape of the outer surface of the middle part of the push rod 7 is adapted to the shape of the inner wall of the middle part of the limiting plate 10. The quadrilateral shape of the outer surface of the middle part of the push rod 7 and the adaptation to the shape of the inner wall of the middle part of the limiting plate 10 ensure that the push rod 7 will not rotate when sliding within the limiting plate 10, and prevent the limiting rod 6 from being twisted at an angle. This ensures that when the push rod 7 is pressed, the end of the limiting rod 6 can be stably inserted into or disengaged from the teeth of the limiting rack 5, thus ensuring the stability and reliability of the leg length adjustment operation.

[0034] Please see Figure 2 , Figure 4 and Figure 5 The push rod 7 extends to the outside of the support leg outer frame 3 at the end away from the limiting rod 6. A pressing plate 8 is provided at the end of the push rod 7 away from the limiting rod 6. A spring 9 is provided between the pressing plate 8 and the limiting plate 10. One end of the spring 9 is provided on one side of the pressing plate 8, and the other end of the spring 9 is provided on one side of the limiting plate 10. The push rod 7 extends to the outside of the support leg outer frame 3 and is provided with the pressing plate 8 to facilitate the operator to apply external force. The spring 9 is provided between the pressing plate 8 and the limiting plate 10. After the operator presses the pressing plate 8 to disengage the limiting rod 6 from the limiting rack 5, the pressing plate is released. 8. Spring 9 can push the pressing plate 8 to reset, causing the limiting rod 6 to re-insert into the teeth of the limiting rack 5, thereby automatically locking the inner rod 4 of the support leg. Furthermore, the pushing force of spring 9 can stably insert the limiting rod 6 into the teeth of the limiting rack 5, preventing the end of the limiting rod 6 from easily disengaging from the teeth of the limiting rack 5, which would prevent the overall length between the outer frame 3 of the support leg and the inner rod 4 of the support leg from being restricted. This simplifies the operation process, improves the adjustment efficiency, and ensures the stability of the support of the level instrument by the outer frame 3 of the support leg and the inner rod 4 of the support leg.

[0035] Please see Figure 2 , Figure 4 and Figure 5 The ends of the limiting rod 6 are rounded at both sides facing the pressing plate 8. This rounded corner design reduces friction and resistance when the limiting rod 6 is inserted between the teeth of the limiting rack 5, allowing the limiting rod 6 to be inserted more smoothly between the teeth of the limiting rack 5. This reduces the difficulty of operation, reduces wear between parts, and extends the service life.

[0036] Please see Figure 1 , Figure 2 and Figure 3A push frame 15 is slidably mounted on the outer surface of the middle part of the outrigger frame 3. A fixing block mounted on the inner wall of the push frame 15 passes through the inner side wall of the outrigger frame 3 and is mounted on the outer surface of the middle part of the outrigger inner rod 4. The four corners of the outer surface of the middle part of the push frame 15 are rounded. The push frame 15 is slidably mounted on the outer surface of the middle part of the outrigger frame 3, and the fixing block on the inner wall is connected to the outrigger inner rod 4. The operator can move the outrigger inner rod 4 within the outrigger frame 3 by pushing the push frame 15. This allows for relatively effortless and convenient movement of the outrigger inner rod 4 within the outrigger frame 3. The rounded corners of the outer surface of the middle part of the push frame 15 prevent scratching the operator during operation, thus improving safety and comfort.

[0037] Please see Figure 1 , Figure 2 and Figure 4 The bottom end of the inner rod 4 of the outrigger is rotatably provided with a threaded rod 11. The outer surface of the middle part of the threaded rod 11 is threaded to the inner wall of the support foot 12. After the overall length of the inner rod 4 of the outrigger is initially adjusted, the height of the support foot 12 is finely adjusted by the threaded engagement between the threaded rod 11 and the support foot 12, which further improves the horizontal accuracy of the level and meets the high-precision requirements of building inspection.

[0038] Please see Figure 1 , Figure 2 and Figure 3 One end of the support leg 12 is connected to a limiting frame 13 via a fixing rod. The inner wall of the middle part of the limiting frame 13 is slidably set on the outer surface of one end of the inner rod 4 of the support leg. The shape of the inner wall of the middle part of the limiting frame 13 is adapted to the shape of the outer surface of one end of the inner rod 4 of the support leg. The limiting frame 13 connected to the support leg 12 via the fixing rod is slidably set on the outer surface of one end of the inner rod 4 of the support leg, and the two are adapted to each other. This can fix the angle of the support leg 12, preventing the support leg 12 from rotating due to the rotation of the screw and threaded rod 11, which would make it impossible to adjust the distance between the support leg 12 and the threaded rod 11. At the same time, fixing the angle of the support leg 12 can prevent the support leg 12 from rotating, which would affect the stability of the contact between the bottom end of the support leg 12 and the ground support point, ensuring the stability of the level instrument and improving the accuracy of the test results.

[0039] Please see Figure 1 , Figure 2 and Figure 3 A connecting ring 14 is provided on the outer surface of one side of the middle part of the threaded rod 11. An anti-slip strip is provided on the outer surface of the middle part of the connecting ring 14. The connecting ring 14 on the outer surface of one side of the middle part of the threaded rod 11 facilitates the operator to rotate the threaded rod 11. The anti-slip strip on the outer surface of the middle part of the connecting ring 14 increases the friction between the operator's hand and the connecting ring 14, and the threaded rod 11 can be driven to rotate stably through the connecting ring 14, which improves the convenience and stability of operation when fine-tuning the support foot 12.

[0040] In this embodiment, a level instrument for building inspection is used. By pushing the push rod 7, the end of the limit rod 6 slides out from between two adjacent teeth of the limit rack 5, releasing the restriction of the limit rack 5 on the limit rod 6. This allows the inner rod 4 of the support leg to slide significantly within the outer frame 3, adjusting the overall length between the inner rod 4 and the outer frame 3. This enables rapid adjustment of the support leg length based on ground conditions with significant height differences, allowing the level instrument to be quickly adjusted and placed even with large height differences. This eliminates the need for lengthy length adjustments of any single support leg, improving the efficiency of building inspection.

[0041] The working principle of the above embodiment is as follows: When a level instrument for building inspection needs to be placed on a ground with a large height difference, and the angle of a certain support leg needs to be significantly adjusted according to the placement of the ground with a large height difference, the operator first presses the pressing plate 8. The pressing plate 8 drives the push rod 7 to move into the outer frame 3 of the support leg, causing the end of the push rod 7 to disengage from the two adjacent teeth of the limiting rack 5. At this time, the spring 9 is compressed by the movement of the pressing plate 8 in conjunction with the limiting plate 10. Then, while pressing the pressing plate 8, the operator pushes the push frame 15. The push frame 15 drives the inner rod 4 of the support leg to slide within the outer frame 3 of the support leg, quickly adjusting the angle. The length of the inner rod 4 of the support leg extending beyond the outer frame 3 is adjusted to accommodate the height difference on the ground. After adjusting to the appropriate length, the pressing plate 8 is released, the spring 9 returns to its original position, and pushes the pressing plate 8, causing the end of the limiting rod 6 to re-insert between two adjacent teeth of the limiting rack 5, locking the position of the inner rod 4 of the support leg within the outer frame 3. When it is necessary to adjust the level of the level instrument body 2, the connecting ring 14 can be turned to rotate the threaded rod 11, adjusting the distance between the support foot 12 and the inner rod 4 of the support leg. Due to the limiting effect of the limiting frame 13 on the support foot 12, the support foot 12 moves stably, completing the precise adjustment of the level of the level instrument body 2.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A level for building inspection, comprising a base (1), characterized in that: The base (1) is provided with a level body (2) at the top. The base (1) is hinged with three leg frames (3) at the bottom by three hinge frames. The inner wall of the leg frame (3) is inserted with a leg rod (4). The outer surface of the leg rod (4) is quadrilateral. The shape of the outer surface of the leg rod (4) matches the shape of the inner wall of the leg frame (3). A limiting rack (5) is provided on one side of the inner wall of the leg frame (3). A limiting plate (10) is provided at one end of the leg rod (4) inside the leg frame (3). A push rod (7) is inserted into the inner wall of the limiting plate (10). A limiting rod (6) is provided at one end of the push rod (7) inside the leg frame (3). The end of the limiting rod (6) is inserted between two adjacent teeth of the limiting rack (5).

2. A leveling instrument for building inspection according to claim 1, characterized in that: The outer surface of the middle part of the push rod (7) is quadrilateral, and the shape of the outer surface of the middle part of the push rod (7) is adapted to the shape of the inner wall of the middle part of the limiting plate (10).

3. A level for building inspection according to claim 1, characterized in that: The push rod (7) extends to the outside of the leg frame (3) at one end away from the limiting rod (6). A pressing plate (8) is provided at the end of the push rod (7) away from the limiting rod (6). A spring (9) is provided between the pressing plate (8) and the limiting plate (10). One end of the spring (9) is located on one side of the pressing plate (8), and the other end of the spring (9) is located on one side of the limiting plate (10).

4. A leveling instrument for building inspection according to claim 1, characterized in that: The ends of the limiting rod (6) are rounded at both sides facing the pressing plate (8).

5. A leveling instrument for building inspection according to claim 1, characterized in that: A push frame (15) is slidably provided on the outer surface of the middle part of the outer frame (3) of the support leg. A fixing block provided on the inner wall of the push frame (15) passes through the inner side wall of the outer frame (3) of the support leg and is provided on the outer surface of the middle part of the inner rod (4) of the support leg. The four corner edges of the outer surface of the middle part of the push frame (15) are rounded.

6. A leveling instrument for building inspection according to claim 1, characterized in that: The bottom end of the inner rod (4) of the support leg is rotatably provided with a threaded rod (11), and the outer surface of the middle part of the threaded rod (11) is threaded to the inner wall of the support foot (12).

7. A leveling instrument for building inspection according to claim 6, characterized in that: One end of the support foot (12) is connected to a limiting frame (13) via a fixing rod. The inner wall of the middle part of the limiting frame (13) is slidably disposed on the outer surface of one end of the inner rod (4) of the support leg. The shape of the inner wall of the middle part of the limiting frame (13) is adapted to the shape of the outer surface of one end of the inner rod (4) of the support leg.

8. A level for building inspection according to claim 6, characterized in that: A connecting ring (14) is provided on the outer surface of one side of the middle part of the threaded rod (11), and an anti-slip strip is provided on the outer surface of the middle part of the connecting ring (14).