Laser ruler for measuring size of bridge crack
By using a laser ruler with first and second laser pens in bridge inspection, combined with a sliding and scale structure, the problem of inaccurate measurement of bridge cracks was solved, achieving simple and accurate measurement results.
Patent Information
- Application Number
- CN202520398565.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-07
AI Technical Summary
In existing technologies, it is impossible to accurately measure the size of cracks that are out of reach or close to during bridge inspections, resulting in inaccurate inspection results and affecting subsequent load-bearing capacity assessments and maintenance management.
A laser ruler is used, which includes first and second laser pens inside a measuring housing. Through a sliding structure and a scale structure, the emission direction of the laser pens is ensured to be parallel to the crack length direction, thus achieving simple and accurate distance measurement.
It enables simple and accurate measurement of bridge crack dimensions, improving the reliability and consistency of inspection results.
Smart Images
Figure CN223710572U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of measuring devices, in particular to a laser ruler for measuring the size of a bridge crack. BACKGROUND
[0002] During use, due to the influence of design, construction, materials, environment or load and other factors, the bridge structure or component may be damaged, lose function or have performance degradation, such as cracks and the like. Therefore, the bridge needs to be regularly detected.
[0003] At present, the main means of regular detection of the bridge is to have the detection personnel approach the surface of the bridge structure and use a steel tape and the like to measure the size of the crack. However, even if a bridge detection vehicle or a climbing vehicle and the like is used in the detection process of the bridge, it is impossible to ensure that the detection personnel can approach all positions to measure, and the problem of being able to see the crack but being unable to accurately measure often occurs. At present, the size of the bridge crack that cannot be reached or approached during the detection of the bridge is estimated by the naked eye of the detection personnel, which brings problems to the subsequent bearing capacity assessment and maintenance management.
[0004] In view of the above related technologies, the inventors believe that it is inconvenient to have the personnel approach the vicinity of the bridge structure and use a steel tape and the like to measure the size of the crack. CONTENT OF THE INVENTION
[0005] In order to facilitate the measurement of the size of the bridge crack, the present application provides a laser ruler for measuring the size of a bridge crack.
[0006] The laser ruler for measuring the size of a bridge crack provided by the present application adopts the following technical solution:
[0007] A laser ruler for measuring the size of a bridge crack, comprising a measuring shell, a first laser pen horizontally slidingly installed in the measuring shell, and a second laser pen horizontally slidingly installed in the measuring shell and arranged in parallel to the first laser pen; the measuring shell has a laser emission slot for the laser emitted by the first laser pen and the laser emitted by the second laser pen to pass through, the laser emission direction of the first laser pen and the laser emission direction of the second laser pen are both perpendicular to the length direction of the laser emission slot; the top of the first laser pen is provided with a first indicating structure for indicating the laser emission direction, and the top of the second laser pen is provided with a second indicating structure for indicating the laser emission direction.
[0008] By adopting the technical scheme, when measuring the crack, the length direction of the laser emission slot needs to be parallel to the length direction of the crack. By starting the first laser pen and the second laser pen to emit laser, the irradiation point of the first laser pen is coincided with one end point of the crack. By sliding the second indicating structure to change the position of the second laser pen on the measuring shell, the second laser pen is coincided with the other end point of the crack. Since the length direction of the laser emission slot is parallel to the length direction of the detected area and the first laser pen is parallel to the second laser pen, the distance between the first laser pen emission point and the second laser pen emission point is the distance between the two end points of the detected area. The application is more convenient when measuring the crack of the bridge.
[0009] Optionally, the measuring shell is provided with a sliding channel for the first indicating structure and the second indicating structure to slide, and the length direction of the sliding channel is parallel to the length direction of the laser emission slot.
[0010] By adopting the technical scheme, the sliding channel is provided so that the first laser pen and the second laser pen can slide along the sliding channel when sliding, and the stability of the sliding process is ideal.
[0011] Optionally, the first indicating structure comprises a first fixing bolt mounted on the top of the first laser pen and arranged at the sliding channel, and a first fixing nut mounted on the first fixing bolt and abutting against the upper surface of the measuring shell, and the top of the first fixing bolt is provided with a first indicating mark parallel to the laser emission direction.
[0012] By adopting the technical scheme, the specific structure of the first indicating structure is disclosed. When the first laser emission pen slides to the specified position, the first fixing nut can be tightened to fix it. The first indicating mark is provided so that it is more intuitive when measuring the distance between the first laser emission pen and the second laser emission pen.
[0013] Optionally, the second indicating structure comprises a second fixing bolt mounted on the top of the second laser pen and arranged at the sliding channel, and a second fixing nut mounted on the second fixing bolt and abutting against the upper surface of the measuring shell, and the top of the second fixing bolt is provided with a second indicating mark parallel to the laser emission direction.
[0014] By adopting the technical scheme, the specific structure of the second indicating structure is disclosed. When the second laser emission pen slides to the specified position, the second fixing nut can be tightened to fix it. The second indicating mark is provided so that it is more intuitive when measuring the distance between the first laser emission pen and the second laser emission pen.
[0015] Optionally, the upper surface of the measuring shell is provided with a scale structure parallel to the length direction of the sliding channel, and the first indicator and the second indicator both point to the scale structure.
[0016] By adopting the above technical scheme, the scale structure and the first indicator and the second indicator both pointing to the scale structure make it possible to read the distance between the first laser pen and the second laser pen according to the positions of the first indicator and the second indicator on the scale structure after the first laser pen and the second laser pen are fixed at the specified positions, so that the length at the crack can be obtained.
[0017] Optionally, the inner bottom surface of the measuring shell is provided with a strip-shaped sliding groove along the length direction, the bottom of the first laser pen is provided with a first sliding block for sliding cooperation with the strip-shaped sliding groove, and the bottom of the second laser pen is provided with a second sliding block for sliding cooperation with the strip-shaped sliding groove.
[0018] By adopting the above technical scheme, the cooperation of the first sliding block and the strip-shaped sliding groove makes the sliding direction of the first laser pen parallel to the length direction of the laser emission groove, and the cooperation of the second sliding block and the strip-shaped sliding groove makes the sliding direction of the second laser pen parallel to the length direction of the laser emission groove.
[0019] Optionally, the number of the strip-shaped sliding grooves is two and the strip-shaped sliding grooves are arranged side by side along the width direction of the measuring shell, and the number of the first sliding blocks and the second sliding blocks is both two and the first sliding blocks and the second sliding blocks are arranged one by one corresponding to the two strip-shaped sliding grooves.
[0020] By adopting the above technical scheme, the cooperation of the two strip-shaped sliding grooves and the two first sliding blocks makes the first laser pen not easy to deflect when sliding, and the cooperation of the two strip-shaped sliding grooves and the two second sliding blocks makes the second laser pen not easy to deflect when sliding.
[0021] Optionally, the bottom of the measuring shell is provided with a holding handle.
[0022] By adopting the above technical scheme, the holding handle makes it not easy to shake when measuring.
[0023] In summary, the present application has at least one of the following beneficial technical effects:
[0024] 1. A laser ruler for measuring the size of a bridge crack, by arranging a first laser pen and a second laser pen in a measuring shell, when the irradiation point of the first laser pen coincides with one end point at the crack and the irradiation point of the second laser pen coincides with the other end point at the crack, since the first laser pen is parallel to the second laser pen and the laser emission directions of the first laser pen and the second laser pen are both perpendicular to the length direction of the laser emission groove, the distance between the emission point of the first laser pen and the emission point of the second laser pen is the length at the crack, and the measuring process is relatively simple.
[0025] 2. By setting a sliding channel in the measuring shell and making the length direction of the sliding channel parallel to the length direction of the laser emitting slot, the first laser pen and the second laser pen can always keep parallel during the sliding process, so that the measurement result is more accurate;
[0026] 3. By setting a scale structure on the measuring shell, and making the first indication mark and the second indication mark both point to the scale structure, the distance between the emitting point of the first laser pen and the emitting point of the second laser pen is more intuitive when measured. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.
[0028] Figure 2 is a schematic diagram of the structure of the measuring base plate in the embodiment of the present application.
[0029] Figure 3 is a schematic diagram of the structure of the holding handle in the embodiment of the present application.
[0030] Figure 4 is a schematic diagram of the structure of the first indication structure in the embodiment of the present application.
[0031] Figure 5 is a schematic diagram of the structure of the second indication structure in the embodiment of the present application.
[0032] Reference Signs List: 1, measuring shell; 11, measuring base plate; 111, bar-shaped sliding groove; 12, measuring front cover; 121, laser emitting slot; 122, sliding channel; 123, scale structure; 13, measuring rear cover; 14, arrangement chamber; 2, first laser pen; 21, first sliding block; 3, second laser pen; 31, second sliding block; 4, first indication structure; 41, first fixed bolt; 411, first platform; 412, first indication mark; 42, first fixed nut; 5, second indication structure; 51, second fixed bolt; 511, second platform; 512, second indication mark; 52, second fixed nut; 6, switch button; 7, holding handle. DETAILED DESCRIPTION
[0033] The following will be described in detail in combination with the accompanying drawings. Figures 1-5 The present application will be further described in detail.
[0034] The embodiment of the present application discloses a laser ruler for measuring the size of bridge cracks.
[0035] Reference will be made to Figure 1The application discloses a laser ruler for measuring bridge crack size, which comprises a measuring shell 1, a first laser pen 2 slidably arranged in the measuring shell 1, a second laser pen 3 slidably arranged in the measuring shell 1, a first indicating structure 4 arranged on the top of the first laser pen 2 and a second indicating structure 5 arranged on the top of the second laser pen 3. The first laser pen 2 and the second laser pen 3 are of the same structure.
[0036] With reference to Figure 1 The measuring shell 1 comprises a measuring bottom plate 11, a measuring front cover 12 arranged on the measuring bottom plate 11 and a measuring rear cover 13 arranged on the measuring bottom plate 11. An arrangement chamber 14 for arranging the first laser pen 2 and the second laser pen 3 is formed between the measuring bottom plate 11, the measuring front cover 12 and the measuring rear cover 13.
[0037] With reference to Figure 1 The measuring front cover 12 is provided with a laser emission slot 121 along the length direction on the side away from the measuring rear cover 13, so that the laser emitted by the first laser pen 2 / second laser pen 3 arranged in the arrangement chamber 14 can be emitted to the outside of the measuring shell 1 through the laser emission slot 121. The top of the measuring front cover 12 is provided with a sliding through slot 122 penetrating the upper and lower surfaces along the length direction and parallel to the length direction of the laser emission slot 121. The top surface of the measuring front end is provided with a scale structure 123 on the side towards the measuring rear cover 13 along the length direction parallel to the sliding through slot 122, and the scale structure 123 is a length scale marked on the top surface of the measuring front cover 12 and a numerical value arranged corresponding to the length scale.
[0038] With reference to Figure 1 The measuring rear cover 13 is provided with a switch button 6 for starting or closing the first laser pen 2 and the second laser pen 3.
[0039] With reference to Figure 1 and Figure 2The top surface of the measuring bottom plate 11 is provided with a strip-shaped sliding groove 111 along the length direction, the bottom of the first laser pen 2 is provided with a first sliding block 21 which is used for sliding cooperation with the strip-shaped sliding groove 111 along the direction perpendicular to the laser, and the bottom of the second laser pen 3 is provided with a second sliding block 31 which is used for sliding cooperation with the strip-shaped sliding groove 111 along the direction perpendicular to the laser, so that the first laser pen 2 and the second laser pen 3 can slide along the sliding through groove 122 when sliding. In the embodiment, the number of the strip-shaped sliding grooves 111 is two and they are arranged side by side along the width direction of the measuring bottom plate 11, and the number of the first sliding blocks 21 and the second sliding blocks 31 is both two and they are arranged one by one corresponding to the two strip-shaped sliding grooves 111. When installing the first laser pen 2 and the second laser pen 3, the two first sliding blocks 21 of the first laser pen 2 are needed to be clamped into the strip-shaped sliding grooves 111 and the emitting point of the first laser pen 2 is arranged towards the laser emitting groove 121, and the two second sliding blocks 31 of the second laser pen 3 are needed to be clamped into the strip-shaped sliding grooves 111 and the emitting point of the second laser pen 3 is arranged towards the laser emitting groove 121. Then the first laser pen 2 and the second laser pen 3 are covered by the measuring front cover 12 and the measuring rear cover 13, and because the height of the arrangement chamber 14 is matched with the thickness of the first laser pen 2 / second laser pen 3, the first laser pen 2 and the second laser pen 3 can slide along the strip-shaped sliding grooves 111.
[0040] With reference to Figure 3 The bottom of the measuring bottom plate is also provided with a holding handle 7 which is installed by screws, so as to be convenient for the operator to hold when measuring.
[0041] With reference to Figure 1 and Figure 4 The first indicating structure 4 includes a first fixed bolt 41 which is fixedly connected with the top of the first laser pen 2 at one end and extends to the outside through the sliding through groove 122, and a first fixed nut 42 which is installed on the first fixed bolt 41. The top of the first fixed bolt 41 is provided with a first platform 411 and a first indicating mark 412 which is parallel to the laser emitting direction of the first laser pen 2 is installed on the first platform 411, and the first indicating mark 412 points to the scale structure 123. The outer diameter of the first fixed nut 42 is greater than the width of the sliding through groove 122, and the bottom of the first fixed nut 42 abuts against the top surface of the measuring front cover 12 after being tightened, so as to fix the first laser pen 2 at the specified position. In the embodiment, the first fixed nut 42 is a hand-tightened nut and is always tightened, and the first laser pen 2 is fixed at one end of the sliding through groove 122 which is close to the zero scale line of the scale structure 123, and the first indicating mark 412 always points to the zero scale line of the scale structure 123.
[0042] With reference to Figure 1 and Figure 5The second indicating structure 5 comprises a second fixed bolt 51 with one end fixedly connected to the top of the second laser pen 3 and the other end extending to the outside through the sliding through slot 122, and a second fixed nut 52 installed on the second fixed bolt 51. The top of the second fixed bolt 51 has a second platform 511, and a second indicating mark 512 parallel to the laser emission direction of the second laser pen 3 is installed on the second platform 511, and the second indicating mark 512 points to the scale structure 123. The outer diameter of the second fixed nut 52 is greater than the width of the sliding through slot 122. The second fixed nut 52 is a hand-tightened nut, so that the operator can tighten / loosen it through the second fixed nut 52. When measuring the length of the bridge crack, since the first indicating mark 412 points to the zero scale line of the scale structure 123, the length direction of the laser emission slot 121 is parallel to the length direction of the crack, and the irradiation point of the first laser pen 2 is irradiated on one end point of the crack, only the second laser pen 3 is slid through the second fixed bolt 51, so that the irradiation point of the second laser pen 3 is irradiated on the other end point of the crack, and then the second laser pen 3 is locked through the second locking nut, and the position of the second indicating mark 512 on the scale line of the scale structure 123 is the measured value.
[0043] In combination Figures 1 to 5 , the implementation principle of the laser ruler for measuring the size of the bridge crack is that: when measuring the size of the bridge crack, the length direction of the laser emission slot 121 is required to be horizontal to the length direction of the crack. The first laser pen 2 and the second laser pen 3 are started through the switch button 6, so that the irradiation point of the first laser pen 2 and one end point of the crack coincide, since the first laser pen 2 is always fixed at the zero scale of the scale structure 123, only the position of the second laser pen 3 is slid through the second fixed bolt 51, so that the irradiation point of the second laser pen 3 and the other end point of the crack coincide, the position of the second laser pen 3 at the sliding through slot 122 is locked through the second locking nut, and the indicating position of the second indicating mark 512 on the scale structure 123 is obtained to obtain the measured value.
[0044] The above are the preferred embodiments of the present application, but do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.
Claims
1. A laser gauge for measuring the size of a bridge crack, characterized in that, The utility model relates to a laser measuring device, including measuring shell (1), first laser pen (2) of horizontal slip installation in measuring shell (1), second laser pen (3) of horizontal slip installation in measuring shell (1) and parallel to first laser pen (2) arrangement, measuring shell (1) have for the laser of first laser pen (2) and the laser of second laser pen (3) emit the laser emission slot (121) of passing through, the laser emission direction of first laser pen (2) and the laser emission direction of second laser pen (3) all are perpendicular to the length direction of laser emission slot (121), first laser pen (2) top is provided with first indicating structure (4) for indicating laser emission direction, second laser pen (3) top is provided with second indicating structure (5) for indicating laser emission direction.
2. The laser gauge for measuring the size of a bridge crack according to claim 1, wherein, Measuring shell (1) is provided with slip through groove (122) for first indicating structure (4) and second indicating structure (5) slip arrangement, the length direction of slip through groove (122) is parallel to the length direction of laser emission slot (121).
3. The laser gauge for measuring the size of a bridge crack according to claim 2, wherein, First indicating structure (4) includes first fixed bolt (41) installed at the top of first laser pen (2) and arranged at slip through groove (122) and first fixed nut (42) installed at first fixed bolt (41) and bottom abuts on the upper surface of measuring shell (1), the top of first fixed bolt (41) is provided with first indicating mark (412) parallel to laser emission direction.
4. The laser gauge for measuring the size of a bridge crack according to claim 3, wherein, Second indicating structure (5) includes second fixed bolt (51) installed at the top of second laser pen (3) and arranged at slip through groove (122) and second fixed nut (52) installed at second fixed bolt (51) and bottom abuts on the upper surface of measuring shell (1), the top of second fixed bolt (51) is provided with second indicating mark (512) parallel to laser emission direction.
5. The laser gauge for measuring the size of a bridge crack according to claim 4, wherein, The upper surface of measuring shell (1) is provided with scale structure (123) parallel to the length direction of slip through groove (122), and the first indicating mark (412) and the second indicating mark (512) both point to the scale structure (123).
6. The laser gauge for measuring the size of a bridge crack according to claim 1, wherein, The inner bottom surface of the measuring shell (1) is provided with a strip-shaped sliding groove (111) along the length direction, the bottom of the first laser pen (2) is provided with a first sliding block (21) for sliding cooperation with the strip-shaped sliding groove (111), and the bottom of the second laser pen (3) is provided with a second sliding block (31) for sliding cooperation with the strip-shaped sliding groove (111).
7. The laser gauge for measuring the size of a bridge crack according to claim 6, wherein, The number of strip-shaped sliding grooves (111) is two and arranged side by side along the width direction of the measuring shell (1), and the number of the first sliding block (21) and the second sliding block (31) is both two and arranged one-to-one corresponding to the two strip-shaped sliding grooves (111).
8. The laser gauge for measuring the size of a bridge crack according to claim 1, wherein, The bottom of the measuring shell (1) is provided with a holding handle (7).