Portable laser thickness gauge

Abstract

The utility model discloses a portable laser thickness gauge, which relates to the technical field of detection equipment and comprises a thickness gauge body, a rotating groove is arranged on the bottom side in the thickness gauge body, a wind-up roller is rotatably mounted in the rotating groove, and a data transmission line is wound in the wind-up roller. A detection head is fixedly mounted at one end, deviating from the winding roller, of the data transmission line; a rotating shaft is rotatably installed in the thickness gauge body, and the bottom end of the rotating shaft is fixedly connected with the winding roller. The lifting ring drives the fixing ring to move upwards, so that the limiting column is separated from the limiting groove, the detection head is pulled out after limiting of the rotating shaft is relieved, and the torsional spring stores energy; after the fixing ring is loosened, the first spring resets to enable the limiting column to be clamped into the locking position of the limiting groove again; and after the measurement is finished and the fixing ring is lifted, the torsion spring rebounds to automatically wind the data line, so that the detection head is reset into the protective sleeve. And the data transmission line is accommodated in the instrument, so that the risk of winding damage caused by cable exposure is avoided, and the portability of the equipment is kept.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a portable laser thickness gauge. Background Technology

[0002] Laser thickness gauges utilize lasers as a high-precision dimensional measurement method. By emitting a stable laser beam, leveraging the laser's excellent monochromaticity, strong directionality, and superior resistance to electromagnetic interference, they achieve non-contact measurement with micron-level precision. The device emits a collimated laser through a precision optical system. After reflection from the surface of the object being measured, the signal is received by a high-sensitivity photodetector. Combined with advanced algorithms to process the optical path difference data, the thickness parameters of the object can be obtained quickly and accurately.

[0003] A portable laser thickness gauge disclosed in Chinese patent CN214250878U includes a thickness gauge body, a laser emitting device, and a data transmission line. It also includes a handrail, a transmission device, a telescopic cylinder, a bracket, and a suction cup. The handrail is fixedly connected to the top of the thickness gauge body. The telescopic cylinder is slidably installed on the outside of the laser emitting device. The transmission device is connected between the handrail and the laser emitting device. The bracket is fixedly installed on the outer wall of the telescopic cylinder. There are no fewer than two brackets. The suction cup is fixedly installed at the lower end of the bracket. The suction direction of the suction cup is the same as the axis of the telescopic cylinder.

[0004] The aforementioned portable laser thickness gauges have exposed data cables that are prone to tangling with the equipment or other tools, hindering the smoothness of measurement operations. Long cables are inconvenient to manage and store, and accidental pulling can loosen or damage the connectors. Furthermore, exposed cables in industrial settings are susceptible to being run over by mobile equipment or scratched by sharp objects, posing serious safety hazards. This reduces the portability and efficiency of the equipment, especially in confined spaces or complex working conditions such as high-altitude operations, where tangled cables significantly impact operator efficiency and safety.

[0005] To address the aforementioned problems, this invention proposes a portable laser thickness gauge. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a portable laser thickness gauge.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a portable laser thickness gauge, comprising a thickness gauge body, a rotating groove formed on the bottom side of the thickness gauge body, a take-up roller rotatably mounted inside the rotating groove, a data transmission line wound inside the take-up roller, and a detection head fixedly mounted at the end of the data transmission line opposite to the take-up roller; a rotating shaft rotatably mounted inside the thickness gauge body, the bottom end of the rotating shaft being fixedly connected to the take-up roller, and the top end of the rotating shaft extending above the thickness gauge body; a torsion spring fixedly connected between the top surface of the rotating groove and the take-up roller, the torsion spring being sleeved on the outside of the rotating shaft; and a limit component provided at the top end of the rotating shaft.

[0008] The present invention is further configured such that the limiting component includes a connecting rod, a rotating ring, an end cap, a first spring, and limiting posts; the connecting rod is fixedly installed at the top of the rotating shaft, the rotating ring is slidably installed on the outer side of the connecting rod, the end cap is fixedly installed at the top of the connecting rod, the first spring is fixedly connected between the opposite surfaces of the end cap and the rotating ring, and the first spring is sleeved on the outer side of the connecting rod; limiting posts are fixedly connected to both sides of the lower end face of the connecting rod, and multiple limiting grooves are evenly opened around the axis of the connecting rod on the upper end face of the thickness gauge body, and the limiting posts are inserted into the limiting grooves.

[0009] The present invention is further configured such that a fixing ring is fixedly installed on the upper end face of the connecting rod, a lifting ring is fixedly installed on the outer top of the fixing ring, and anti-slip strips are evenly fixedly installed on the outer side of the fixing ring.

[0010] The present invention is further configured such that a through-hole is provided at the bottom of the side wall of the thickness gauge body, the data transmission line passes through the through-hole and the two form a sliding fit, the outer diameter of the detection head is larger than the inner diameter of the through-hole; a protective sleeve is fixedly installed on the side wall of the thickness gauge body corresponding to the through-hole, and the detection head is housed inside the protective sleeve.

[0011] The present invention is further configured such that the detection head includes a detection shell, a laser emitting device, a second spring, and a connecting line; the detection shell is fixedly connected to the data transmission line, a sliding groove is provided inside the detection shell, the laser emitting device is slidably installed inside the sliding groove, a second spring is fixedly connected inside the sliding groove, the other end of the second spring is fixedly connected to the laser emitting device, a connecting line is fixedly connected to the laser emitting device, and the other end of the connecting line is fixedly connected to the data transmission line.

[0012] The present invention is further configured such that an annular support pad is fixedly installed at one end of the detection shell away from the data transmission line.

[0013] The present invention is further provided that a rubber sleeve is fixedly fitted on the outer side of the detection shell.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This portable laser thickness gauge features a rotating groove, a take-up roller, a data transmission cable, a detection head, a rotating shaft, a torsion spring, and a limiting assembly. A lifting ring moves the fixing ring upwards, disengaging the limiting post from the limiting groove. This releases the limiting position on the rotating shaft, allowing the detection head to be pulled out, and the torsion spring stores energy. After the fixing ring is released, the first spring resets, locking the limiting post back into the limiting groove. During measurement, the laser emitter maintains stable contact pressure under the action of the second spring. After measurement, pulling the fixing ring back automatically rewinds the data cable, returning the detection head to its protective sleeve. By completely housing the data transmission cable inside the instrument, the risk of tangling and damage from exposed cables is avoided, while maintaining the device's portability. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a partial cross-sectional view of the present invention.

[0021] Reference numerals in the attached drawings: 1. Thickness gauge body; 2. Rotating groove; 3. Rewinding roller; 4. Data transmission line; 5. Detection head; 6. Rotating shaft; 7. Torsion spring; 8. Connecting rod; 9. Rotating ring; 10. End cap; 11. First spring; 12. Limiting post; 13. Limiting groove; 14. Fixing ring; 15. Lifting ring; 16. Anti-slip strip; 17. Protective sleeve; 18. Detection shell; 19. Laser emitting device; 20. Second spring; 21. Connecting line; 22. Slide groove; 23. Annular support pad; 24. Rubber sleeve. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a portable laser thickness gauge, including a thickness gauge body 1, a rotating groove 2 is provided on the bottom side inside the thickness gauge body 1, a winding roller 3 is rotatably installed inside the rotating groove 2, a data transmission line 4 is wound inside the winding roller 3, and a detection head 5 is fixedly installed at the end of the data transmission line 4 away from the winding roller 3.

[0026] The thickness gauge body 1 has a rotating shaft 6 inside. The bottom end of the rotating shaft 6 is fixedly connected to the winding roller 3, and the top end of the rotating shaft 6 extends to the top of the thickness gauge body 1.

[0027] A torsion spring 7 is fixedly connected between the inner top surface of the rotating groove 2 and the take-up roller 3, and the torsion spring 7 is sleeved on the outside of the rotating shaft 6. The elastic potential energy of the torsion spring 7 realizes the automatic winding function, ensuring that the detection head 5 can automatically reset after use, thus improving the convenience of operation.

[0028] A limiting assembly is provided at the top of the rotating shaft 6. The limiting assembly includes a connecting rod 8, a rotating ring 9, an end cap 10, a first spring 11, and a limiting post 12. The first spring 11 provides stable elastic force to ensure precise engagement between the limiting post 12 and the limiting groove 13. The connecting rod 8 is fixedly installed at the top of the rotating shaft 6. The rotating ring 9 is slidably installed on the outer side of the connecting rod 8. The end cap 10 is fixedly installed at the top of the connecting rod 8. The first spring 11 is fixedly connected between the opposite surfaces of the end cap 10 and the rotating ring 9. The first spring 11 is sleeved on the outer side of the connecting rod 8. Limiting posts 12 are fixedly connected to both sides of the lower end face of the connecting rod 8. Multiple limiting grooves 13 are evenly opened around the axis of the connecting rod 8 on the upper end face of the thickness gauge body 1. The limiting posts 12 are inserted into the limiting grooves 13.

[0029] In this embodiment of the utility model: a fixing ring 14 is fixedly installed on the upper end face of the connecting rod 8, a lifting ring 15 is fixedly installed on the outer top of the fixing ring 14, and anti-slip strips 16 are evenly fixedly installed on the outer side of the fixing ring 14.

[0030] The thickness gauge body 1 has a through-hole at the bottom of its side wall. The data transmission line 4 passes through the through-hole, and the two form a sliding fit. The outer diameter of the detection head 5 is larger than the inner diameter of the through-hole. The sliding fit between the through-hole and the data transmission line 4 ensures smooth cable feeding and take-up.

[0031] A protective sleeve 17 is fixedly installed on the side wall of the thickness gauge body 1 corresponding to the through-hole, and the detection head 5 is housed inside the protective sleeve 17.

[0032] The detection head 5 includes a detection shell 18, a laser emitting device 19, a second spring 20, and a connecting line 21. The detection shell 18 is fixedly connected to the data transmission line 4. A sliding groove 22 is provided inside the detection shell 18. The laser emitting device 19 is slidably installed inside the sliding groove 22. The second spring 20 is fixedly connected inside the sliding groove 22. The other end of the second spring 20 is fixedly connected to the laser emitting device 19. The connecting line 21 is fixedly connected to the laser emitting device 19. The other end of the connecting line 21 is fixedly connected to the data transmission line 4.

[0033] In this embodiment of the invention: an annular support pad 23 is fixedly installed at one end of the detection shell 18 away from the data transmission line 4. The annular support pad 23 ensures stable contact with the surface being measured during measurement.

[0034] In this embodiment of the invention: a rubber sleeve 24 is fixedly fitted on the outer side of the detection shell 18. The rubber sleeve 24 provides cushioning protection and enhances the grip and anti-slip properties.

[0035] Working principle:

[0036] In use, the operator first applies upward force through the lifting ring 15 to smoothly lift the fixing ring 14 vertically, causing the rotating ring 9 to slide upward on the outside of the connecting rod 8. During this process, the upward movement of the rotating ring 9 forces the first spring 11 to undergo uniform compression deformation, while precisely driving the limiting post 12 to completely disengage from the engagement position of the limiting groove 13, thereby completely releasing the circumferential limiting constraint on the rotating shaft 6. At this time, the operator can smoothly pull out the detection head 5 horizontally. The movement of the detection head 5 is transmitted to the take-up roller 3 through the data transmission line 4, forcing the take-up roller 3 to rotate around its axis. This rotational action causes the pre-tensioned torsion spring 7 to undergo elastic deformation, storing sufficient rebound potential energy.

[0037] After the detection head 5 is pulled to the predetermined detection position, the operator slowly releases the fixing ring 14. Under the action of the restoring force, the first spring 11 pushes the rotating ring 9 to return to its original position along the connecting rod 8. The limiting posts 12 symmetrically distributed on both sides of the rotating ring 9 are embedded in the corresponding limiting grooves 13 to form a mechanical lock, effectively preventing the restoring torque of the torsion spring 7 from causing the detection head 5 to retract unexpectedly.

[0038] During measurement, the operator must firmly hold the rubber sleeve 24 on the outside of the detection housing 18 and perpendicularly press the measuring end face of the laser emitting device 19 against the surface of the object being measured. The contact pressure causes the laser emitting device 19 to smoothly retract along the precision guide rail of the slide groove 22, while simultaneously causing the second spring 20 to undergo controllable compression deformation. Its precise elastic force ensures that the laser emitting device 19 maintains a constant contact pressure with the surface being measured, thereby eliminating measurement gaps and significantly improving the repeatability and accuracy of the measurement results.

[0039] After the measurement is completed, pull the fixing ring 14 upward again to the unlock position. The elastic potential energy stored in the torsion spring 7 is immediately released, driving the take-up roller 3 to rotate at a constant speed. The detection head 5 is automatically retracted through the traction of the data transmission line 4, and finally the detection head 5 is completely reset into the internal protective cavity of the protective sleeve 17, realizing the automatic storage and protection of the equipment.

[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A portable laser thickness gauge comprising a thickness gauge body (1), characterised in that: The inside bottom side of the thickness gauge body (1) is provided with a rotating groove (2), a winding roller (3) is rotatably installed in the rotating groove (2), a data transmission line (4) is wound in the winding roller (3), and a detection head (5) is fixedly installed at the end of the data transmission line (4) away from the winding roller (3); a rotating shaft (6) is rotatably installed in the thickness gauge body (1), the bottom end of the rotating shaft (6) is fixedly connected with the winding roller (3), and the top end of the rotating shaft (6) extends above the thickness gauge body (1); a torsional spring (7) is fixedly connected between the inside top surface of the rotating groove (2) and the winding roller (3), and the torsional spring (7) is sleeved on the outside of the rotating shaft (6); and a limiting assembly is arranged at the top end of the rotating shaft (6).

2. The portable laser thickness gauge of claim 1, wherein: The limiting assembly comprises a connecting rod (8), a rotating ring (9), an end cover (10), a first spring (11) and a limiting column (12); the connecting rod (8) is fixedly installed at the top end of the rotating shaft (6), the rotating ring (9) is slidably installed on the outside of the connecting rod (8), the end cover (10) is fixedly installed at the top end of the connecting rod (8), the first spring (11) is fixedly connected between the opposite surfaces of the end cover (10) and the rotating ring (9), and the first spring (11) is sleeved on the outside of the connecting rod (8); the limiting column (12) is fixedly connected to the lower end surface of the connecting rod (8) on both sides, a plurality of limiting grooves (13) are uniformly formed in the upper end surface of the thickness gauge body (1) around the axis of the connecting rod (8), and the limiting column (12) is insertedly connected with the limiting grooves (13).

3. A portable laser thickness gauge according to claim 2, wherein: The upper end surface of the connecting rod (8) is fixedly installed with a fixed ring (14), the outside top end of the fixed ring (14) is fixedly installed with a pull ring (15), and the outside of the fixed ring (14) is uniformly fixedly installed with anti-skid strips (16).

4. The portable laser thickness gauge of claim 1, wherein: A through hole is formed in the bottom end of the side wall of the thickness gauge body (1), the data transmission line (4) passes through the through hole and forms a sliding fit with the through hole, the outer diameter of the detection head (5) is greater than the inner diameter of the through hole, a protective sleeve (17) is fixedly installed on the side wall of the thickness gauge body (1) corresponding to the through hole, and the detection head (5) is accommodated in the protective sleeve (17).

5. The portable laser thickness gauge of claim 1, wherein: The detection head (5) comprises a detection shell (18), a laser emitting device (19), a second spring (20) and a connecting line (21); the detection shell (18) is fixedly connected with the data transmission line (4), a sliding groove (22) is formed in the inside of the detection shell (18), the laser emitting device (19) is slidably installed in the sliding groove (22), the second spring (20) is fixedly connected in the inside of the sliding groove (22), the other end of the second spring (20) is fixedly connected with the laser emitting device (19), the connecting line (21) is fixedly connected with the laser emitting device (19), and the other end of the connecting line (21) is fixedly connected with the data transmission line (4).

6. A portable laser thickness gauge according to claim 5, wherein: The end of the detection shell (18) away from the data transmission line (4) is fixedly installed with an annular supporting pad (23).

7. The portable laser thickness gauge of claim 5, wherein: A rubber sleeve (24) is fixedly sleeved on the outside of the detection shell (18).

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