A construction project acceptance crack observation instrument

Abstract

The utility model provides a kind of construction project acceptance crack observation instrument, comprising: observation instrument main body, the side of observation instrument is connected with electric line by power connection terminal, the lower surface of observation instrument main body is fixedly connected with take-up box by bolt, fixed in the take-up box closure cover;Wire winding part, the wire winding part is installed in the take-up box, the outside of the wire winding part is wound with data line, one end of the data line is connected with observation probe;Positioning part, the positioning part is installed in the lower surface of observation instrument main body, and is connected with the wire winding part, for limiting the rotation of the wire winding part;The construction project acceptance crack observation instrument can realize the stable winding and unwinding of data line by the cooperation of wire winding disc and electrically conductive slip ring in wire winding part, and ensure the continuity of signal transmission, cooperate with guiding portion, so that data line can smoothly enter and be stored in take-up box, and further avoid winding abrasion, and it is not easy to cause impact to crack observation work.

Description

Technical Field

[0001] This utility model relates to the field of crack observation technology, and more specifically, to a crack observation instrument for construction project acceptance. Background Technology

[0002] Crack detectors, also known as crack width detectors, are mainly used to quantitatively detect the width of cracks in bridges, tunnels, walls, concrete pavements, and metal surfaces. In the field of civil engineering, too many cracks on the surface of concrete components indicate quality defects in the concrete forming process, and cracks also affect the appearance quality of concrete components. Therefore, in order to ensure the forming quality of concrete components, on-site supervisors often use crack detectors to detect cracks on the surface of concrete components.

[0003] However, existing crack observation instruments have some defects or shortcomings: When using existing observation instruments, the data cable is usually wrapped directly outside the instrument or stored haphazardly, which is prone to tangling and wear, resulting in unstable or broken signal transmission. In addition, the cable winding and unwinding requires manual handling, which is inefficient and can easily cause the probe to fall off. After the observation instrument is used, the observation probe is often exposed to the outside without effective protection. The lens is exposed to the outside and is susceptible to collisions and dust contamination, which affects the accuracy and lifespan, making it inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a crack observation instrument for construction project acceptance, so as to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a construction project acceptance crack observation instrument, comprising: an observation instrument body, a power supply wire connected to the side of the observation instrument via a power terminal, and a cable take-up box fixedly connected to the lower surface of the observation instrument body by bolts, with a closed cover fixed to the cable take-up box. The cable take-up section is installed inside the cable take-up box, and a data cable is wound around the outside of the cable take-up section. One end of the data cable is connected to an observation probe. A positioning part is installed on the lower surface of the main body of the observation instrument and connected to the take-up part, which is used to limit the rotation of the take-up part; A storage unit, which is fixed to the main body of the observation instrument; A guide portion, which is mounted on the cable take-up box and adapted to the data cable, wherein... Drive the take-up section, and the data cable, guided by the guide section, enters or exits the take-up box, causing the observation probe to enter or exit the storage section.

[0006] Furthermore, the take-up section includes a positioning ring fixed inside the take-up box, a take-up reel rotatable outside the positioning ring and disposed inside the take-up box, a conductive slip ring disposed inside the take-up box with one end fixedly connected to the take-up reel and the other end fixedly connected to the inner wall of the take-up box, a take-up groove formed on the take-up box, and a rotating handle hinged to the lower surface of the take-up reel. The data cable is wound around the outside of the take-up reel; The other end of the data cable passes through the take-up groove and the take-up reel, and is connected to one end of the conductive slip ring. The other end of the connecting wire passes through the take-up box and is connected to the other end of the conductive slip ring.

[0007] Furthermore, the take-up section also includes a plurality of guide balls movably mounted in a ring array on the inner wall of the closed cover and the take-up box, and a plurality of annular guide grooves symmetrically opened on the upper and lower sides of the take-up reel, allowing the plurality of guide balls to move.

[0008] Furthermore, the guide portion includes a guide frame fixed on the take-up box and located within the take-up groove, and two guide wheels symmetrically rotatably mounted within the guide frame; The data cable passes through the gap between the two guide wheels.

[0009] Furthermore, the positioning part includes a positioning toothed ring fixedly sleeved on the outside of the take-up reel, a positioning frame fixed on the lower surface of the observation instrument body, a positioning toothed block movably disposed in the positioning frame and meshing with the positioning toothed ring, an adjusting bolt threadedly connected to the positioning frame and rotatably connected to the positioning toothed block, and a positioning groove formed on the take-up box for the positioning toothed block to move.

[0010] Furthermore, the storage unit includes a storage frame fixed to the main body of the observation instrument and used to accommodate the observation probe, and a control groove is formed on the lower surface of the storage frame; The storage frame corresponds to the guide section.

[0011] Furthermore, gripping blocks are symmetrically fixedly connected to the lower surface of the main body of the observation instrument, and rubber sleeves are fixedly fitted to the outside of the two gripping blocks. Two tension rings are symmetrically fixedly connected to both sides of the main body of the observation instrument.

[0012] Compared with the prior art, the embodiments of this utility model have the following beneficial effects: The crack observation instrument used in this construction project acceptance uses a rotating handle to rotate the take-up reel, which guides the data cable to be evenly wound or released on the reel. This prevents the data cable from being randomly wound or placed before and after use, effectively preventing tangling and knotting, and ensuring efficiency in taking and releasing the data cable. The end of the data cable is connected to the rotor end of a conductive slip ring, and the connecting wire is connected to the stator end of the slip ring. When the take-up reel rotates, the current is continuously transmitted through the sliding contact of the slip ring, ensuring stable data transmission and preventing the line from breaking and data transmission from being interrupted. The crack observation instrument used in this construction project has a built-in storage unit. When the data cable is wound up, the observation probe is brought into the storage frame. With the cooperation of the positioning unit, the rotation of the winding reel in the winding unit is restricted. Under the traction of the data cable, the observation probe is kept in the position of the storage frame and will not fall out of the storage frame. This effectively protects the observation probe when it is not in use, and the lens can be effectively protected from collisions and dust contamination, thus effectively improving its service life and subsequent accuracy. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 A perspective view of the present invention is shown; Figure 2 A partial bottom-view perspective view of this utility model is shown; Figure 3 A partial bottom view of the present invention is shown; Figure 4 This invention demonstrates a partially disassembled three-dimensional representation. Figure 1 ; Figure 5 A partial cross-sectional perspective view of this utility model is shown; Figure 6 This invention demonstrates a partially disassembled three-dimensional representation. Figure 2 .

[0015] In the picture 1. Main body of the observation instrument; 2. Connecting wire; 3. Retractor box; 4. Sealing cover; 5. Retractor section; 6. Data cable; 7. Observation probe; 8. Positioning section; 9. Storage section; 10. Guide section; 11. Positioning ring; 12. Retractor; 13. Conductive slip ring; 14. Retractor groove; 15. Rotating handle; 16. Guide ball; 17. Annular guide groove; 18. Guide frame; 19. Guide wheel; 20. Positioning toothed ring; 21. Positioning frame; 22. Positioning toothed block; 23. Adjusting bolt; 24. Positioning groove; 25. Storage frame; 26. Control groove; 27. Grip block; 28. Rubber sleeve; 29. ​​Support ring. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] like Figure 1-6 As shown, a construction project acceptance crack observation instrument includes: an observation instrument body 1, a power supply wire 2 connected to the side of the observation instrument via a power supply terminal, and a cable take-up box 3 fixedly connected to the lower surface of the observation instrument body 1 by bolts, with a closed cover 4 fixed to the cable take-up box 3. The cable take-up section 5 is installed inside the cable take-up box 3. A data cable 6 is wound around the outside of the cable take-up section 5, and one end of the data cable 6 is connected to the observation probe 7. Positioning part 8 is installed on the lower surface of the observation instrument body 1 and connected to the take-up part 5, and is used to restrict the rotation of the take-up part 5; Storage section 9, which is fixed to the main body 1 of the observation instrument; Guide part 10, the guide part 10 is mounted on the cable take-up box 3 and is adapted to the data cable 6, wherein Drive the take-up section 5, and the data cable 6, guided by the guide section 10, enters or exits the take-up box 3, and causes the observation probe 7 to enter or exit the storage section 9. During use, the user controls the take-up section 5 by rotating the handle 15, which drives the take-up reel 12 to rotate and wind or release the data cable 6. During the winding and unwinding of the data cable 6, the guide section 10 effectively limits the range of motion of the data cable 6 and reduces wear, enabling quick and neat winding of the data cable 6. This eliminates the need for manual cleaning, allowing the data cable 6 to be evenly wound and stored after use, preventing tangling. During the winding and unwinding process, the conductive slip ring 13 connects the rotating data cable 6 to the fixed connecting wire 2, ensuring a continuous power supply while the take-up reel 12 rotates. The electrical and signal transmission is uninterrupted, ensuring the stability of the observation probe 7 during use. After the data cable 6 is unwound, the user can hold the observation probe 7 and move it to the location of the crack to be measured for crack observation. After the data cable 6 is retracted, the observation probe 7 is driven into the storage part 9. The storage frame 25 can effectively protect the observation probe 7, reduce the impact damage and dust contamination suffered by the observation probe 7, and effectively improve the service life of the observation probe 7. When the data cable 6 is unwound and retracted, the positioning part 8 can limit the rotation of the retracting part 5, thereby ensuring the stability of the position of the observation probe 7.

[0018] Optionally, the take-up section 5 includes a positioning ring 11 fixed inside the take-up box 3, a take-up reel 12 rotatable outside the positioning ring 11 and disposed inside the take-up box 3, a conductive slip ring 13 disposed inside the take-up box 3 with one end fixedly connected to the take-up reel 12 and the other end fixedly connected to the inner wall of the take-up box 3, a take-up groove 14 formed on the take-up box 3, and a rotating handle 15 hinged to the lower surface of the take-up reel 12. The data cable 6 is wound around the outside of the take-up reel 12; The other end of the data cable 6 passes through the take-up groove 14 and the take-up reel 12, and is connected to one end of the conductive slip ring 13. The other end of the connecting wire 2 passes through the take-up box 3 and is connected to the other end of the conductive slip ring 13. In use, the user rotates the handle 15 to control the take-up reel 12 to rotate around the positioning ring 11, thereby achieving the winding and unwinding of the data cable 6. The take-up groove 14 is the channel for the data cable 6 to enter and exit the take-up box 3, restricting its movement path. The end of the data cable 6 passes through the take-up reel 12 and connects to the rotor end of the conductive slip ring 13. The connecting wire 2 connects to the stator end of the conductive slip ring 13. Thus, no matter how the take-up reel 12 rotates, the current and signal can be continuously transmitted through the slip ring, avoiding line breakage, ensuring power supply and signal stability, and facilitating manual winding and unwinding to quickly complete multi-point detection in environments without power, ensuring the environmental adaptability and reliability of the equipment.

[0019] Optionally, the take-up section 5 further includes a plurality of guide balls 16 arranged in an annular array and movably installed on the inner wall of the closed cover 4 and the take-up box 3, and a plurality of annular guide grooves 17 symmetrically opened on the upper and lower sides of the take-up reel 12, and for the plurality of guide balls 16 to move. Multiple ball bearings are distributed in a ring between the inner wall of the take-up box 3 and the closed cover 4, allowing them to roll freely. When the user rotates the handle 15 to drive the take-up reel 12, the take-up reel 12 contacts several guide ball bearings 16 through the annular guide grooves 17 on the upper and lower sides, ensuring rolling friction between the take-up reel 12 and the take-up box 3 and the closed cover 4. This makes taking up and unloading the cable easier and ensures that the take-up reel 12 is subjected to uniform force during rotation, preventing tilting and jamming. At the same time, it can effectively reduce the wear on the contact surface of the take-up reel 12 and effectively improve its service life.

[0020] Optionally, the guide portion 10 includes a guide frame 18 fixed on the take-up box 3 and located in the take-up groove 14, and two guide wheels 19 symmetrically rotatably installed in the guide frame 18; The data cable 6 passes through the gap between the two guide wheels 19; When the data cable 6 is being wound up or down, the two guide wheels 19 are driven to rotate, reducing frictional resistance and ensuring that the data cable 6 moves smoothly. This confines the data cable 6 within the gap between the two guide wheels 19, preventing direct friction with the edge of the cable winding groove 14 and effectively reducing wear.

[0021] Optionally, the positioning part 8 includes a positioning toothed ring 20 fixedly sleeved on the outside of the take-up reel 12, a positioning frame 21 fixed on the lower surface of the observation instrument body 1, a positioning tooth block 22 movably disposed in the positioning frame 21 and meshing with the positioning toothed ring 20, an adjusting bolt 23 threadedly connected to the positioning frame 21 and rotatably connected to the positioning tooth block 22, and a positioning groove 24 opened on the take-up box 3 for the positioning tooth block 22 to move. In use, rotating the adjusting screw clockwise pushes the adjusting bolt 23 toward the positioning toothed ring 20, causing the positioning tooth block 22 to move along the positioning groove 24 and engage with the positioning toothed ring 20. At this time, the take-up reel 12 is mechanically locked and cannot rotate, and the extension length of the data cable 6 is fixed, so that the position of the observation probe 7 remains stable. The positioning toothed ring 20 and the positioning tooth block 22 engage with a continuous tooth groove, so the take-up reel 12 can be locked at any angle, meeting the multi-position dwell requirements of the observation probe 7 and ensuring that the observation probe 7 will not detach from the storage part 9 when it is not in use, thus ensuring the protective effect of the storage part 9 on the observation probe 7. When the adjusting bolt 23 is rotated counterclockwise, the adjusting bolt 23 retracts, the positioning tooth block 22 disengages from the positioning toothed ring 20, and the take-up reel 12 can rotate freely, facilitating the take-up and take-up of the data cable 6.

[0022] Optionally, the storage part 9 includes a storage frame 25 fixed on the main body 1 of the observation instrument and used to accommodate the observation probe 7, and a control groove 26 is formed on the lower surface of the storage frame 25. The storage frame 25 corresponds to the guide portion 10; When the observation probe 7 is not in use, the data cable 6 is retracted into the cable box 3 via the cable take-up part 5, which in turn moves the observation probe 7 into the storage frame 25. The control slot 26 allows staff to easily insert their fingers into the storage frame 25 to access the observation probe 7, making it easy to remove the observation probe 7 from the storage frame 25. During the retraction and extension process, the data cable 6 is guided by the guide part 10 to ensure that the observation probe 7 moves in a straight line and smoothly enters or exits the storage frame 25. The storage frame 25 has a closed or semi-closed structure, which effectively prevents the observation probe 7 from being exposed to the external environment, avoiding bumps, dust pollution, or rainwater erosion, and preventing damage due to careless placement.

[0023] Optionally, gripping blocks 27 are symmetrically fixedly connected to the lower surface of the main body 1 of the observation instrument, and rubber sleeves 28 are fixedly sleeved on the outside of the two gripping blocks 27. Two tension rings 29 are symmetrically fixedly connected to both sides of the main body 1 of the observation instrument. Two grip blocks 27 are symmetrically fixed on the lower surface of the instrument body 1, and the surface is covered with rubber sleeves 28 to provide stable grip points when handheld. When in use, the staff can hold the rubber sleeves 28 with both hands or one hand, and the friction will prevent the equipment from slipping off. The two tension rings 29 set on the instrument body 1 can provide connecting pads for external hooks or shoulder straps, making it easy to suspend the equipment through the tension rings 29, freeing up the staff's hands and making it suitable for long-distance movement.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A crack observation instrument for construction project acceptance, characterized in that, include: The main body of the observation instrument (1) has a power supply wire (2) connected to the side of the observation instrument via a power terminal. The lower surface of the main body of the observation instrument (1) is fixedly connected to a take-up box (3) by bolts, and a cover (4) is fixed to the take-up box (3). The take-up section (5) is installed inside the take-up box (3). A data cable (6) is wound around the outside of the take-up section (5). One end of the data cable (6) is connected to the observation probe (7). Positioning part (8), which is installed on the lower surface of the main body (1) of the observation instrument and connected to the take-up part (5), is used to restrict the rotation of the take-up part (5); Storage part (9), which is fixed on the main body (1) of the observation instrument; Guide section (10), the guide section (10) is mounted on the take-up box (3) and adapted to the data cable (6), wherein Drive the take-up section (5), and the data cable (6) enters or exits the take-up box (3) under the guidance of the guide section (10), and causes the observation probe (7) to enter or exit the storage section (9).

2. The construction project acceptance crack observation instrument as described in claim 1, characterized in that, The take-up section (5) includes a positioning ring (11) fixed inside the take-up box (3), a take-up reel (12) rotatable outside the positioning ring (11) and set inside the take-up box (3), a conductive slip ring (13) set inside the take-up box (3) with one end fixedly connected to the take-up reel (12) and the other end fixedly connected to the inner wall of the take-up box (3), a take-up groove (14) opened on the take-up box (3), and a rotating handle (15) hinged to the lower surface of the take-up reel (12). The data cable (6) is wound around the outside of the take-up reel (12); The other end of the data cable (6) passes through the take-up groove (14) and the take-up reel (12), and is connected to one end of the conductive slip ring (13). The other end of the connecting wire (2) passes through the take-up box (3) and is connected to the other end of the conductive slip ring (13).

3. A construction project acceptance crack observation instrument as described in claim 2, characterized in that, The take-up section (5) also includes a number of guide balls (16) arranged in an annular array and movably installed on the inner wall of the closed cover (4) and the take-up box (3), and a number of annular guide grooves (17) symmetrically opened on the upper and lower sides of the take-up reel (12) for the movement of the guide balls (16).

4. A construction project acceptance crack observation instrument as described in claim 3, characterized in that, The guide part (10) includes a guide frame (18) fixed on the take-up box (3) and located in the take-up groove (14), and two guide wheels (19) symmetrically rotatably installed in the guide frame (18). The data cable (6) passes through the gap between the two guide wheels (19).

5. A construction project acceptance crack observation instrument as described in claim 4, characterized in that, The positioning part (8) includes a positioning toothed ring (20) fixedly sleeved on the outside of the take-up reel (12), a positioning frame (21) fixed on the lower surface of the main body (1) of the observation instrument, a positioning toothed block (22) movably disposed in the positioning frame (21) and meshing with the positioning toothed ring (20), an adjusting bolt (23) threadedly connected to the positioning frame (21) and rotatably connected to the positioning toothed block (22), and a positioning groove (24) opened on the take-up box (3) for the positioning toothed block (22) to move.

6. A construction project acceptance crack observation instrument as described in claim 4, characterized in that, The storage section (9) includes a storage frame (25) fixed on the main body (1) of the observation instrument and used to accommodate the observation probe (7), and a control groove (26) opened on the lower surface of the storage frame (25). The storage frame (25) corresponds to the guide portion (10).

7. A construction project acceptance crack observation instrument as described in claim 6, characterized in that, The lower surface of the main body (1) of the observation instrument is symmetrically and fixedly connected with gripping blocks (27), and rubber sleeves (28) are fixedly sleeved on the outside of the two gripping blocks (27). Two bearing rings (29) are symmetrically and fixedly connected on both sides of the main body (1) of the observation instrument.

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