A concrete crack monitoring device
By introducing a lifting adjustment component and a protective structure into the concrete crack monitoring device, the problems of cumbersome operation and insufficient accuracy of existing devices when monitoring different heights are solved, achieving flexible adjustment and all-round protection of the instrument, thus improving monitoring efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG HESHENG MINING CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-26
AI Technical Summary
Existing concrete crack monitoring devices are cumbersome to operate, have low monitoring efficiency, and are difficult to guarantee accuracy when monitoring cracks at different heights.
A concrete crack monitoring device was designed, which includes a fixed base and a lifting and adjusting assembly. The height can be flexibly adjusted by a telescopic rod and scale markings. The portable crack monitor is protected by protective foam and elastic restraint straps in the storage box.
This improved the applicability and convenience of the monitoring device, ensured monitoring accuracy, and protected the integrity of the instrument during transportation and storage.
Smart Images

Figure CN224414743U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crack monitoring technology, specifically a concrete crack monitoring device. Background Technology
[0002] Concrete crack monitoring devices monitor changes in surface and internal crack parameters of concrete structures, automatically collect and transmit monitoring data, and provide timely warnings of crack propagation trends. This provides crucial data support for assessing the safety and durability of concrete structures, assists relevant personnel in taking targeted maintenance measures in advance, avoids structural safety accidents, and ensures the long-term stable operation of the project.
[0003] Patent document CN216847807U discloses a monitoring device for detecting concrete cracks. This document mainly considers that since the probe needs to come into contact with a concrete wall during use, the concrete wall is prone to dust, which makes the probe easy to get dusty. When too much dust accumulates on the probe, it can affect its own detection effect. However, it does not take into account the problems of existing devices being cumbersome to operate, having low monitoring efficiency, and being difficult to guarantee accuracy when monitoring cracks at different heights. Utility Model Content
[0004] The purpose of this invention is to provide a concrete crack monitoring device to solve the problems mentioned in the background art, such as cumbersome operation, low monitoring efficiency, and difficulty in guaranteeing accuracy when monitoring cracks at different heights.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a concrete crack monitoring device, including a fixed base, wherein a lifting adjustment component is provided on the top of the fixed base, the lifting adjustment component being used to adjust the height of the monitoring device to adapt to different monitoring positions;
[0006] The lifting and adjusting assembly includes a telescopic rod connected to the top of the fixed base, a storage box connected to the top of the telescopic rod, a mounting bracket connected to one side of the storage box, a fixing sleeve fitted onto the outer surface of the mounting bracket, and a fixed crack monitor connected to the front of the fixing sleeve by bolts.
[0007] The telescopic pole has scale markings on the front to indicate the telescopic height.
[0008] Preferably, a triangular reinforcing rib is provided between the telescopic rod and the fixed base.
[0009] Preferably, the front of the storage box is provided with an opening and closing door via a hinge, and a handle is connected to the front of the opening and closing door.
[0010] Preferably, the storage box has a storage cavity inside, the storage cavity is filled with protective sponge, and a portable crack monitor is placed inside the protective sponge.
[0011] Preferably, the protective sponge has symmetrically arranged elastic restraint straps connected to its front side, and the elastic restraint straps are located on the outside of the portable crack monitor.
[0012] Preferably, a second handle is provided on one side of the telescopic rod, and the surface of the second handle is provided with an anti-slip rubber sleeve.
[0013] Preferably, the outer side of the fixed base is provided with evenly distributed support rods, the bottom of the support rods is equipped with feet and casters, and the casters are located inside the feet.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This utility model achieves flexible height adjustment and intuitive display of height values by setting a lifting and adjusting component on the top of the fixed base. Compared with the prior art, the height of traditional concrete crack monitoring devices is often fixed or inconvenient to adjust, making it difficult to adapt to the monitoring needs of concrete structure cracks of different heights. This device can improve the applicability and convenience of monitoring. Construction personnel can adjust the height of the device by means of the telescopic rod according to the actual monitoring position, and then accurately control the height value according to the scale markings. This solves the problems of cumbersome operation, low monitoring efficiency and difficulty in guaranteeing accuracy of existing devices when monitoring cracks of different heights.
[0016] 2. This utility model provides comprehensive protection for the portable crack monitor by incorporating protective sponge and thermoelastic straps inside the storage box. When the portable crack monitor is needed, it can be taken out without being confined to a fixed position. Compared with existing technologies, previous monitoring devices lacked a dedicated and effective instrument storage and protection structure, making the instrument susceptible to damage from collisions and compression during storage and transportation. This invention solves the shortcomings of existing devices in instrument storage and protection, ensuring the stable and reliable performance of the instrument. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a front structural diagram of the present invention;
[0019] Figure 3 This is a side view of the present invention.
[0020] Figure 4 This is a schematic diagram of the mounting bracket and fixing sleeve structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the internal structure of the storage box of this utility model.
[0022] In the diagram: 1. Fixed base; 2. Telescopic rod; 3. Storage box; 4. Mounting bracket; 5. Fixing sleeve; 6. Fixed crack monitor; 7. Scale markings; 8. Triangular reinforcing rib; 9. Opening door; 10. Handle one; 11. Storage cavity; 12. Protective sponge; 13. Portable crack monitor; 14. Elastic restraint strap; 15. Handle two; 16. Anti-slip rubber sleeve; 17. Support rod; 18. Support leg; 19. Casters. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention provides an embodiment of a concrete crack monitoring device, which includes a fixed base 1, and a lifting adjustment component is provided on the top of the fixed base 1. The lifting adjustment component is used to adjust the height of the monitoring device to adapt to different monitoring positions.
[0026] The lifting and adjusting assembly includes a telescopic rod 2 connected to the top of the fixed base 1, a storage box 3 connected to the top of the telescopic rod 2, a mounting bracket 4 connected to one side of the storage box 3, a fixing sleeve 5 fitted onto the outer surface of the mounting bracket 4, and a fixing crack monitor 6 connected to the front of the fixing sleeve 5 by bolts.
[0027] The telescopic pole 2 has a scale mark 7 on its front side, which is used to display the telescopic height of the telescopic pole 2.
[0028] A triangular reinforcing rib 8 is provided between the telescopic rod 2 and the fixed base 1.
[0029] Furthermore, the basic support component of the device is a fixed base 1, which provides a stable support platform for the entire device. A lifting and adjusting component is installed on the top of the fixed base 1. The main function of this component is to adjust the height of the monitoring device to meet the needs of concrete crack monitoring at different height positions. The lifting and adjusting component includes a telescopic rod 2, the lower end of which is firmly connected to the top of the fixed base 1. It adopts a multi-stage telescopic sleeve structure design, which can flexibly adjust the height by stretching or contracting. The front of the telescopic rod 2 is provided with a scale mark 7. The scale mark 7 is marked with clear and distinct scale lines and numerical markings, which makes it convenient for operators to intuitively read the telescopic height of the telescopic rod 2, thereby accurately controlling the height position of the monitoring device and ensuring the accuracy of monitoring.
[0030] The top of the telescopic rod 2 is connected to the storage box 3, and a mounting bracket 4 is connected to one side of the storage box 3. A fixing sleeve 5 is fitted onto the outer surface of the mounting bracket 4. The fixing sleeve 5 and the mounting bracket 4 are interference fit, which can fit tightly. The front of the fixing sleeve 5 is connected to the fixed crack monitor 6 by bolts. This connection method facilitates the installation and removal of the fixed crack monitor 6. When it is necessary to replace or repair the monitor, it can be operated by simply unscrewing the bolts. The fixed crack monitor 6 is fixed to the side of the storage box 3 through this structure, which can continuously monitor concrete cracks in specific locations.
[0031] To enhance the connection strength and stability between the telescopic rod 2 and the fixed base 1, a triangular reinforcing rib 8 is provided between them. The triangular reinforcing rib 8 is connected to the telescopic rod 2 and the fixed base 1 by welding. Utilizing the stability principle of triangles, it effectively disperses and bears the pressure and lateral force from the telescopic rod 2, preventing the telescopic rod 2 from shaking or tilting during use, and ensuring that the entire device remains stable after height adjustment.
[0032] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 One embodiment of this utility model is a concrete crack monitoring device, wherein the front of the storage box 3 is provided with an opening and closing door 9 via a hinge, and a handle 10 is connected to the front of the opening and closing door 9.
[0033] The storage box 3 has a storage cavity 11 inside, which is filled with a protective sponge 12. A portable crack monitor 13 is placed inside the protective sponge 12.
[0034] The protective sponge 12 has symmetrically arranged elastic restraint straps 14 connected to its front side, and the elastic restraint straps 14 are located on the outside of the portable crack monitor 13.
[0035] A handle 15 is provided on one side of the telescopic rod 2, and an anti-slip rubber sleeve 16 is provided on the surface of the handle 15.
[0036] The fixed base 1 has evenly arranged support rods 17 on its outer side. The bottom of the support rods 17 is equipped with feet 18 and casters 19, and the casters 19 are located inside the feet 18.
[0037] Furthermore, the front of the storage box 3 is connected to the opening and closing door 9 via a hinge. The opening and closing door 9 can be rotated around the hinge to open and close. The handle 10 connected to the front of the opening and closing door 9 provides a convenient point of force for the operator to easily open and close the door 9. The storage box 3 has a storage cavity 11 inside, which is filled with protective sponge 12. The protective sponge 12 is soft and has good cushioning performance. The portable crack monitor 13 is placed inside the protective sponge 12, which can be fully wrapped and protected to prevent the instrument from being damaged by collision or compression during storage and transportation. The front of the protective sponge 12 is connected to symmetrically arranged elastic restraint straps 14. The elastic restraint straps 14 are made of elastic material and have Velcro at the ends. The operator can adjust the tightness of the elastic restraint straps 14 according to the size of the portable crack monitor 13 by using the Velcro to securely restrain the instrument inside the protective sponge 12 and further prevent the instrument from shaking.
[0038] A handle 15 is provided on one side of the telescopic rod 2. The surface of the handle 15 is covered with an anti-slip rubber sleeve 16, which increases the friction between the handle and the operator's hand. When the operator needs to adjust the height of the telescopic rod 2, they can hold the handle 15. The anti-slip rubber sleeve 16 can effectively prevent the hand from slipping, making the operation safer and more convenient.
[0039] The outer side of the fixed base 1 is provided with evenly distributed support rods 17. The support rods 17 are fixed to the fixed base 1 by welding, which can enhance the overall support strength of the device. The bottom of the support rods 17 is equipped with both feet 18 and casters 19. The casters 19 are located inside the feet 18. The casters 19 adopt a universal wheel structure, which facilitates the movement of the device on flat ground and allows the device to be quickly moved to different monitoring positions. The bottom of the feet 18 is provided with rubber anti-slip pads. When the device is moved to the designated position, the operator can adjust the height of the feet 18 to make the rubber anti-slip pads at the bottom of the feet 18 make close contact with the ground, increase the friction with the ground, and fix the device firmly on the ground to prevent the device from moving or shaking during monitoring.
[0040] Working principle: When it is necessary to monitor cracks in a concrete structure, the operator holds the handle 15 on one side of the telescopic rod 2 and uses the movable wheel 19 at the bottom of the outer support rod 17 of the fixed base 1 to push the device to the target monitoring position. The movable wheel 19 adopts a universal wheel structure, which can achieve 360-degree free turning and flexibly adjust the direction of movement. After reaching the monitoring point, the support foot 18 at the bottom of the support rod 17 is adjusted to make the rubber anti-slip pad at the bottom of the support foot 18 fit tightly against the ground, increasing the friction with the ground, stabilizing the fixed device, and preventing the device from moving during the monitoring process.
[0041] Based on the actual height of the concrete crack, the operator grips handle 215 again to extend or retract the telescopic rod 2 to adjust the height of the device. The telescopic rod 2 adopts a multi-stage telescopic sleeve structure, which can flexibly change the length. During adjustment, the operator can precisely control the extension height by observing the scale markings 7 on the front of the telescopic rod 2, so that the fixed crack monitor 6 fixed on the mounting frame 4 is aligned with the crack monitoring position. The fixing sleeve 5 fitted onto the outer surface of the mounting frame 4 is tightly fixed by interference fit, ensuring that the fixed crack monitor 6 is stable and does not shake. At the same time, its bolt connection method makes it easy to adjust the monitor angle to obtain the best monitoring angle.
[0042] After the fixed crack monitor 6 is aligned with the crack, it begins to continuously monitor the concrete crack and record the changes in the crack. During the monitoring process, if it is necessary to conduct more detailed testing on cracks in other locations or of different types, the opening and closing door 9 on the front of the storage box 3 can be opened. The opening and closing door 9 is opened by rotating the hinge, and the handle 10 on the front makes it easy to apply force for operation. After opening, the portable crack monitor 13 is taken out from the protective sponge 12 filled in the storage cavity 11. The protective sponge 12 is soft in texture, and the elastic restraint strap 14 can be adjusted with Velcro to securely protect the instrument. After taking out the portable crack monitor 13, the operator holds the instrument to conduct targeted testing and data collection on other cracks in the concrete structure.
[0043] After completing the monitoring work, the portable crack monitor 13 is put back into the protective foam 12 and secured with the elastic strap 14. The opening and closing door 9 is closed. Then, the telescopic rod 2 is retracted to a suitable height to reduce the overall height of the device. Finally, the operator uses the moving wheels 19 to move the device to the designated storage location or transfer it to the next monitoring point to prepare for the next monitoring.
[0044] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.
[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A concrete crack monitoring device comprising a fixed base (1) characterised in that: The top of the fixed base (1) is provided with a lifting adjustment component, which is used to adjust the height of the monitoring device to adapt to different monitoring positions. The lifting adjustment assembly includes a telescopic rod (2) connected to the top of the fixed base (1), a storage box (3) connected to the top of the telescopic rod (2), a mounting bracket (4) connected to one side of the storage box (3), a fixing sleeve (5) sleeved on the outer surface of the mounting bracket (4), and a fixed crack monitor (6) connected to the front of the fixing sleeve (5) by bolts. The telescopic pole (2) has a scale mark (7) on its front side, which is used to display the telescopic height of the telescopic pole (2).
2. A concrete crack monitoring device according to claim 1, wherein: A triangular reinforcing rib (8) is provided between the telescopic rod (2) and the fixed base (1).
3. The concrete crack monitoring device according to claim 1, characterized in that: The storage box (3) has an opening and closing door (9) on the front side via a hinge, and a handle (10) is connected to the front side of the opening and closing door (9).
4. The concrete crack monitoring device according to claim 1, characterized in that: The storage box (3) has a storage cavity (11) inside, the storage cavity (11) is filled with a protective sponge (12), and a portable crack monitor (13) is placed inside the protective sponge (12).
5. A concrete crack monitoring device according to claim 4, characterized in that: The protective sponge (12) has symmetrically arranged elastic restraint bands (14) connected to its front side, and the elastic restraint bands (14) are located on the outside of the portable crack monitor (13).
6. A concrete crack monitoring device according to claim 1, characterized in that: The telescopic rod (2) is provided with a handle two (15) on one side, and the surface of the handle two (15) is provided with an anti-slip rubber sleeve (16).
7. A concrete crack monitoring device according to claim 1, characterized in that: The fixed base (1) is provided with evenly arranged support rods (17) on the outside. The bottom of the support rods (17) is equipped with feet (18) and casters (19), and the casters (19) are located inside the feet (18).