Laser measuring device and method for measuring a cutting depth

Abstract

The application provides a laser measuring device and a cutting depth measuring method, wherein the laser measuring device comprises a mounting shell, a top of the mounting shell is provided with a first opening; a control panel and a control circuit are arranged on the mounting shell, and the control panel is connected in the control circuit; a laser emitting element and a laser receiving element are arranged in the mounting shell and connected in the control circuit; a protective cover is movably nested on the mounting shell and controls the disconnection and conduction of the control circuit, wherein a bottom of the protective cover is located in the mounting shell through the first opening, a top of the protective cover is located outside the mounting shell, the laser emitting element has a first distance from a plane where a second opening is located, the laser receiving element has a second distance from the plane where the second opening is located, and the second distance is equal to the first distance. The technical scheme of the application effectively solves the problem of the axis deflection of the laser measuring device and the cable in the related art, so that the error of the measured data is avoided.

Description

Technical Field

[0001] This invention relates to the field of power equipment, and more specifically, to a laser measuring instrument and a method for measuring cutting depth. Background Technology

[0002] The cable's outer electrode is the semi-conductive layer of the cable's outer sheath. When cutting the cable's outer end, the cutting depth must be strictly controlled. After cutting, the cutting depth of the cut surface on the cable needs to be measured to ensure it meets requirements. Currently, laser measuring devices are commonly used, determining the cutting depth by the time difference between laser emission and reception. However, because cables are typically arc-shaped, workers are prone to misaligning the laser measuring device with the cable's axis during measurement. This leads to height errors between the laser emitter and receiver, resulting in inaccurate measurement data. Summary of the Invention

[0003] The main objective of this invention is to provide a laser measuring instrument and a method for measuring cutting depth, so as to solve the problem of measurement errors caused by the misalignment of the laser measuring device and the cable axis in related technologies.

[0004] To achieve the above objectives, according to one aspect of the present invention, a laser measuring device is provided, comprising: a mounting housing having a first opening at its top; a control board and control circuitry, both disposed on the mounting housing, the control board being connected to the control circuitry; a laser emitter and a laser receiver, both disposed within the mounting housing and connected to the control circuitry; and a protective cover movably nested within the mounting housing and controlling the disconnection and connection of the control circuitry, the protective cover having an extended position for disconnecting the control circuitry and a retracted position for connecting the control circuitry when moved, wherein the bottom of the protective cover passes through the first opening and is located within the mounting housing, the outer wall of the protective cover is fitted against the inner wall of the mounting housing, the top of the protective cover is located outside the mounting housing, and the top of the protective cover has a second opening for avoiding the laser emitter and the laser receiver, a first distance is present between the laser emitter and the plane containing the second opening, and a second distance is present between the laser receiver and the plane containing the second opening, the second distance being equal to the first distance.

[0005] Furthermore, the laser measuring device also includes a stop structure that can be retractably mounted on the protective cover. The mounting housing is provided with a recess. The stop structure has a stop position that cooperates with the recess and a disengagement position that is not in cooperation with the recess. When the stop structure is in the stop position, the protective cover remains in the extended position. When the stop structure is in the disengagement position, the protective cover switches between the extended position and the retracted position.

[0006] Furthermore, the laser measuring device also includes a drive structure movably disposed within the protective cover. The first end of the drive structure extends out of the protective cover from the second opening, and the second end of the drive structure can drive and cooperate with the stop structure. When the drive structure moves, it has a blocking position and a yielding position. When the drive structure is in the blocking position, the second end of the drive structure drives the stop structure to move from the stop position to the disengagement position. When the drive structure is in the yielding position, the stop structure can move from the disengagement position to the stop position.

[0007] Furthermore, the drive structure includes a drive rod and a drive wedge. The first end of the drive rod extends out of the protective cover from the second opening, and the drive wedge is connected to the second end of the drive rod. The stop structure is provided with a drive hole for the drive wedge to be inserted, and the drive wedge can push against the wall of the drive hole.

[0008] Furthermore, the second end of the drive structure is provided with a first drive ramp, and the stop structure is provided with a second drive ramp that abuts against the first drive ramp. The distance between the first drive ramp and the inner side of the protective cover gradually decreases from the top to the bottom of the protective cover.

[0009] Furthermore, a guide sleeve is provided on the inner wall of the protective cover. The axis of the guide sleeve is parallel to the moving direction of the protective cover. The driving structure passes through the inner hole of the guide sleeve and is guided and engaged with the guide sleeve.

[0010] Furthermore, a first elastic element is provided between the guide sleeve and the drive structure, and the first elastic element applies a first tension to the drive structure to keep the drive structure in the avoidance position.

[0011] Furthermore, multiple rolling elements are provided on the end face of the first end of the drive structure, and the end face of the first end of the drive structure is parallel to the plane where the second opening is located.

[0012] Furthermore, the stop structure includes a stop plate and a connecting plate vertically connected to the stop plate. The stop plate can be inserted into the recess to cooperate with the stop in the recess. The connecting plate contacts and cooperates with the bottom of the protective cover. A second elastic member is provided between the connecting plate and the inner sidewall of the protective cover. The second elastic member applies a second tension to the connecting plate to keep the stop structure in the stop position.

[0013] Furthermore, a third elastic element is provided between the bottom of the mounting shell and the bottom of the protective cover. The third elastic element applies a thrust to the protective cover to keep the protective cover in the extended position.

[0014] Furthermore, the laser measuring device also includes a first conductive part and a second conductive part that are respectively connected to the control circuit. The first conductive part is located at the bottom of the protective cover. When the protective cover moves, it causes the first conductive part to separate from the second conductive part, thus disconnecting the control circuit. When the protective cover moves, it causes the first conductive part to connect with the second conductive part, thus turning on the control circuit.

[0015] Furthermore, a countersunk hole is provided on the second conductive part, and a conductive arc plate is provided on the side wall of the countersunk hole. The first conductive part includes a conductive post. When the conductive post is located inside the countersunk hole and the outer side of the conductive post abuts against the conductive arc plate, the first conductive part is connected to the second conductive part.

[0016] Furthermore, the laser measuring device also includes a battery and a display screen connected in the control circuit. The battery is housed inside the mounting housing, and the display screen is mounted on the mounting housing. The control board is equipped with control buttons, which control the laser emitter and laser receiver to turn on or off when the control circuit is connected.

[0017] According to another aspect of the present invention, a method for measuring cutting depth is provided, wherein the cutting depth of a cable's cut edge is measured using the aforementioned laser measuring device. The method for measuring cutting depth includes: attaching the top of a protective cover to the outer surface of the cable, such that the opening of the protective cover is aligned with the cut edge; pressing the protective cover against the cable, pushing the protective cover to move from an extended position to a retracted position on the mounting housing; when the protective cover is moved to the retracted position, energizing the laser emitter and laser receiver in the control circuit; and controlling the laser emitter to emit laser light through the opening of the protective cover and irradiate the cut edge, and controlling the laser receiver to receive the laser light reflected from the cut edge through the opening of the protective cover, so that the control board measures the cutting depth of the cut edge by the time difference between emitting and receiving the laser light.

[0018] According to the technical solution of this invention, the laser measuring device includes: a mounting shell, a control board, control circuitry, a laser emitter, a laser receiver, and a protective cover. The top of the mounting shell has a first opening. Both the control board and control circuitry are mounted on the mounting shell, with the control board connected to the control circuitry. Both the laser emitter and laser receiver are mounted inside the mounting shell and connected to the control circuitry. The protective cover is movably nested on the mounting shell and controls the disconnection and connection of the control circuitry. When the protective cover moves, it has an extended position to disconnect the control circuitry and a retracted position to connect the control circuitry. The bottom of the protective cover passes through the first opening and is located inside the mounting shell. The outer wall of the protective cover is fitted against the inner wall of the mounting shell. The top of the protective cover is located outside the mounting shell. The top of the protective cover has a second opening to avoid the laser emitter and laser receiver. There is a first distance between the laser emitter and the plane containing the second opening, and a second distance between the laser receiver and the plane containing the second opening, the second distance being equal to the first distance. The top of the protective cover is attached to the outer surface of the cable, with the second opening of the cover aligned with the cutting edge. The cover is pressed down to move from the extended position to the retracted position. At this point, the control circuit of the protective cover is activated, and both the laser emitter and receiver in the control circuit are energized. Because the outer wall of the protective cover is fitted against the inner wall of the mounting housing, it prevents the cover from tilting relative to the housing. The control panel controls the laser emitter and receiver, causing them to emit laser light through the second opening and irradiate the cutting edge. The laser receiver receives the reflected laser light through the second opening of the protective cover, allowing the control panel to measure the cutting depth of the cutting edge by the time difference between laser emission and reception. During measurement, because the second distance is equal to the first distance, both the laser emitter and receiver remain perpendicular to the cable axis. Even if the laser measuring device is tilted relative to the cable axis, the laser emitter and receiver remain at the same height, reducing height errors and thus minimizing measurement errors. Therefore, the technical solution of this application effectively solves the problem of measurement data errors caused by the misalignment of the laser measuring device and the cable axis in related technologies. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A side view schematic diagram of a laser measuring device according to an embodiment of the present invention measuring device is shown when measuring a cutting edge;

[0021] Figure 2 It shows Figure 1 A three-dimensional structural diagram of a laser measuring device;

[0022] Figure 3 It shows Figure 1 A schematic diagram of the control circuitry on the laser measuring instrument;

[0023] Figure 4 It shows Figure 2 A three-dimensional schematic diagram of the laser measuring device after being cut open at the drive structure;

[0024] Figure 5 It shows Figure 4 A magnified schematic diagram of point A on the laser measuring instrument;

[0025] Figure 6 It shows Figure 2 A partial schematic diagram of the laser measuring device after sectioning at the first conductive part;

[0026] Figure 7 It shows Figure 6 A magnified schematic diagram of point B on the laser measuring device.

[0027] The above figures include the following reference numerals:

[0028] 1. Mounting housing; 2. Battery; 3. Laser emitter; 4. Laser receiver; 5. Control board; 6. Control buttons; 7. Display screen; 8. Protective cover; 9. Third elastic element; 10. Stop structure; 11. Drive structure; 12. Drive rod; 13. Drive wedge; 14. Drive hole; 15. First elastic element; 16. Guide sleeve; 17. Abutment; 18. Second elastic element; 19. First conductive part;

[0029] 20. Countersunk hole; 21. Conductive arc plate; 22. Rolling element;

[0030] 31. Control circuit; 32. Second conductive part; 33. First opening; 34. Recess; 35. Second opening; 36. Cable; 37. Cutting edge;

[0031] 101. Stop plate; 102. Connecting plate; 103. Second driving inclined surface; 111. First driving inclined surface. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] like Figures 1 to 6 As shown, the laser measuring device of this embodiment includes: a mounting housing 1, a control board 5, a control circuit 31, a laser emitter 3, a laser receiver 4, and a protective cover 8. The top of the mounting housing 1 has a first opening 33. The control board 5 and the control circuit 31 are both disposed on the mounting housing 1, and the control board 5 is connected to the control circuit 31. The laser emitter 3 and the laser receiver 4 are both disposed inside the mounting housing 1 and connected to the control circuit 31. The protective cover 8 is movably nested on the mounting housing 1 and controls the disconnection and connection of the control circuit 31. When the protective cover 8 moves, it has an extended position that disconnects the control circuit 31 and a retracted position that connects the control circuit 31. The bottom of the protective cover 8 passes through the first opening 33 and is located inside the mounting shell 1. The outer wall of the protective cover 8 is fitted to the inner wall of the mounting shell 1. The top of the protective cover 8 is located outside the mounting shell 1. The top of the protective cover 8 is provided with a second opening 35 to avoid the laser emitter 3 and the laser receiver 4. There is a first distance between the laser emitter 3 and the plane where the second opening 35 is located, and there is a second distance between the laser receiver 4 and the plane where the second opening 35 is located. The second distance is equal to the first distance.

[0036] Using the technical solution of this embodiment, the laser measuring device includes: a mounting housing 1, a control board 5, a control circuit 31, a laser emitter 3, a laser receiver 4, and a protective cover 8. The top of the protective cover 8 is attached to the outer surface of the cable 36, and the second opening 35 of the protective cover 8 is aligned with the cutting edge 37. The protective cover 8 is pressed against the cable, causing it to move from an extended position to a retracted position. At this time, the protective cover 8 controls the control circuit 31 to conduct, and both the laser emitter 3 and the laser receiver 4 in the control circuit 31 are energized. Furthermore, because the outer wall of the protective cover 8 is attached to the inner wall of the mounting housing 1, it prevents the protective cover 8 from tilting relative to the mounting housing 1. The control board 5 controls the laser emitter 3 and the laser receiver 4, controlling the laser emitter 3 to emit laser light that irradiates the cutting edge 37 through the second opening 35, and controlling the laser receiver 4 to receive the laser light reflected from the cutting edge 37 through the second opening 35 of the protective cover 8. This allows the control board 5 to measure the cutting depth of the cutting edge 37 by the time difference between emitting and receiving the laser light. Furthermore, during the measurement process, since the second distance is equal to the first distance, both the laser emitter 3 and the laser receiver 4 remain perpendicular to the axis of the cable 36. Even if the laser measuring device is misaligned with the axis of the cable 36, it can still ensure that the laser emitter 3 and the laser receiver 4 remain at the same height, reducing height errors between the laser emitter 3 and the laser receiver 4, thereby reducing measurement data errors. Therefore, the technical solution of this embodiment effectively solves the problem of measurement data errors caused by the misalignment of the laser measuring device with the axis of the cable 36 in related technologies. Moreover, the laser measuring device of this embodiment can also ensure that the laser emitter 3 and the laser module remain at the same height when continuously measuring the cutting depth around the circumference of the cable 36, ensuring the accuracy of the measurement data.

[0037] In this embodiment, the protective cover 8 can protect the structure installed inside the mounting shell 1 and the protective cover 8. When the top of the protective cover 8 is uniformly stressed, it retracts into the interior of the mounting shell 1, and enables the laser emitter 3 and the laser receiver 4 to start working and perform measurement. The protective cover 8 is made of transparent material (e.g., transparent plastic), which can protect the internal structure of the mounting shell 1 without affecting the laser emitter 3 to emit laser light outward or the laser receiver 4 to receive the reflected laser light.

[0038] like Figures 1 to 6As shown, the laser measuring device also includes a stop structure 10 that can be retractably mounted on the protective cover 8. The mounting shell 1 is provided with a recess 34. The stop structure 10 has a stop position that cooperates with the recess 34 and a disengagement position that is not in cooperation with the recess 34. When the stop structure 10 is in the stop position, the protective cover 8 is kept in the extended position, which can prevent the protective cover 8 from falling out of the mounting shell 1. When the stop structure 10 is in the disengagement position, the stop structure 10 will not interfere with the mounting shell 1. The protective cover 8 switches between the extended position and the retracted position.

[0039] It should be noted that the extension and retraction direction of the stop structure 10 can be perpendicular to the moving direction of the protective cover 8 or form an acute angle with the moving direction of the protective cover 8.

[0040] like Figures 1 to 6 As shown, in order to facilitate the retractable mounting of the stop structure 10 on the protective cover 8, the laser measuring device also includes a drive structure 11 movably mounted inside the protective cover 8. The first end of the drive structure 11 extends out of the protective cover 8 from the second opening 35, and the second end of the drive structure 11 can drive and cooperate with the stop structure 10. When the drive structure 11 moves, it has a pressing position and a yielding position. When the drive structure 11 is in the pressing position, the second end of the drive structure 11 drives the stop structure 10 to move from the stopping position to the disengaged position. When the drive structure 11 is in the yielding position, the stop structure 10 can move from the disengaged position to the stopping position.

[0041] like Figures 1 to 6 As shown, during the process of attaching the top of the protective cover 8 to the outer surface of the cable 36, the first end of the drive structure 11 first attaches to the outer surface of the cable 36 and presses against the first end of the drive structure 11 to move inward toward the protective cover 8. The second end of the drive structure 11 can engage with the stop structure 10 to drive the stop structure 10 from the stop position to the disengagement position, thereby enabling the protective cover 8 to move on the mounting housing 1. During the process of the protective cover 8 moving from the retracted position to the extended position, and when the drive structure 11 is in the avoidance position, the stop structure 10 does not move to the position corresponding to the recess 34 and can engage with the inner wall of the mounting housing 1. When the protective cover 8 is in the extended position, since the drive structure 11 is still in the avoidance position, the stop structure can move from the disengagement position to the stop position.

[0042] like Figures 1 to 6As shown, the drive structure 11 includes a drive rod 12 and a drive wedge 13. The first end of the drive rod 12 extends from the second opening 35 to the outside of the protective cover 8. The drive wedge 13 is connected to the second end of the drive rod 12. The stop structure 10 is provided with a drive hole 14 for the drive wedge 13 to be inserted. The drive wedge 13 can push against the wall of the drive hole 14. Outside the protective cover 8, the arrangement of the drive rod 12 facilitates the first end of the drive rod 12 to fit against the outer side of the cable 36 and press against the first end of the drive rod 12 to move into the inside of the protective cover 8. At this time, the drive wedge 13 pushes against the wall of the drive hole 14, so that the stop structure 10 can move out of the stop position.

[0043] Specifically, the drive rod 12 includes a first vertical section, a curved section, and a second vertical section that are adapted to the shape of the outer wall of the protective cover 8. The first vertical section, the curved section, and the second vertical section are connected in sequence. The first vertical section extends upward from the second opening 35 to the outside of the protective cover 8, and the end of the second vertical section away from the curved section is connected to the drive wedge block 13.

[0044] like Figures 1 to 6 As shown, the second end of the drive structure 11 is provided with a first drive ramp 111, and the stop structure 10 is provided with a second drive ramp 103 that abuts against the first drive ramp 111. The distance between the first drive ramp 111 and the inner side of the protective cover 8 gradually decreases from the top to the bottom of the protective cover 8. When the drive structure 11 presses against the stop structure 10, the abutting cooperation of the first drive ramp 111 and the second drive ramp 103 can, on the one hand, change the direction of the pressure applied by the drive structure 11 to the stop structure 10, and on the other hand, reduce the shaking of the stop structure 10 during movement, making the movement more stable.

[0045] Specifically, the first driving inclined surface 111 is disposed on the driving wedge block 13, and the second driving inclined surface 103 is disposed on the hole wall of the driving hole 14.

[0046] like Figures 1 to 6 As shown, in order to ensure that the drive structure 11 can move in a predetermined direction and that the movement process is smooth, a guide sleeve 16 is provided on the inner side wall of the protective cover 8. The axis of the guide sleeve 16 is parallel to the moving direction of the protective cover 8. The drive structure 11 passes through the inner hole of the guide sleeve 16 and is guided and engaged with the guide sleeve 16.

[0047] like Figures 1 to 6As shown, a first elastic element 15 is provided between the guide sleeve 16 and the drive structure 11. The first elastic element 15 applies a first tension force to the drive structure 11 to keep the drive structure 11 in the avoidance position. When the drive structure 11 is attached to the outer surface of the cable 36, the drive structure 11 moves inward toward the protective cover 8, and the drive structure 11 stretches the first elastic element 15, allowing the drive structure 11 to switch from the avoidance position to the pressing position. When the drive structure 11 moves away from the outer surface of the cable 36, under the action of the first tension force of the first elastic element 15, the drive structure 11 can automatically move from the pressing position to the avoidance position, thereby keeping the drive structure 11 in the avoidance position.

[0048] Specifically, a stop 17 is provided at the bottom end of the guide sleeve 16, and a first elastic element 15 is fixed between the stop 17 and the drive structure 11. The first elastic element 15 is preferably a first tension spring.

[0049] like Figures 1 to 6 As shown, a plurality of rolling elements 22 are provided on the end face of the first end of the drive structure 11, and the end face of the first end of the drive structure 11 is parallel to the plane where the second opening 35 is located. The rolling elements 22 allow the drive structure 11 to slide more smoothly on the outer surface of the cable 36, thereby facilitating the operator to better slide the drive structure 11 on the outer surface of the cable 36 when it is in contact with the cable 36, and to measure the cutting depth around the outer electrode of the cable 36. The rolling elements 22 are preferably ball bearings.

[0050] like Figures 1 to 6 As shown, the stop structure 10 includes a stop plate 101 and a connecting plate 102 vertically connected to the stop plate 101. The stop plate 101 can be inserted into the recess 34 to stop and engage with the recess 34. The connecting plate 102 contacts and engages with the bottom of the protective cover 8. A second elastic member 18 is provided between the connecting plate 102 and the inner wall of the protective cover 8. The second elastic member 18 applies a second tension force to the connecting plate 102 to keep the stop structure 10 in the stop position. The stop structure 10 will stably engage with the recess 34 on the mounting shell 1 without external force. The second elastic member 18 is preferably a second tension spring.

[0051] The aforementioned stop plate 101 and connecting plate 102 are in the shape of a "┐". The side wall of the protective cover 8 is provided with a clearance hole for the stop plate 101 to pass through. The bottom of the protective cover 8 is provided with an inward flange. The connecting plate 102 contacts and cooperates with the inward flange, and the inward flange can support the connecting plate 102. The connecting plate 102 can slide relative to the inward flange, so as to facilitate the switching of the stop structure 10 between the stop position and the disengagement position.

[0052] like Figures 1 to 6As shown, a third elastic element 9 is provided between the bottom of the mounting housing 1 and the bottom of the protective cover 8. The third elastic element 9 applies a pushing force to the protective cover 8, causing the protective cover 8 to be in the extended position. After the protective cover 8 is no longer subjected to external force, the third elastic element 9 can push the protective cover 8 towards the top of the mounting housing 1, and simultaneously drive the stop structure 10 to move towards the top of the mounting housing 1, thereby allowing the protective cover 8 to return to the extended position and the stop structure 10 to move to the position corresponding to the recess 34. The aforementioned third elastic element 9 is preferably a compression spring.

[0053] In this embodiment, multiple drive structures 11 are symmetrically distributed on the inner sidewall of the protective cover 8. When multiple drive structures 11 are pressed simultaneously, the top of the protective cover 8 can be driven by the first end of the drive structure 11, or the first end of the drive structure 11 can move into the protective cover 8, and the protective cover 8 can directly contact the outer side of the cable 36. Both aspects can ensure that the top of the protective cover 8 is evenly stressed. When multiple drive structures 11 are pressed simultaneously, the first drive inclined surface 111 and the second drive inclined surface 103 can be used to push the stop structure 10 to slide at the bottom of the protective cover 8, thereby moving the stop structure 10 from the stop position to the disengagement position, and preventing the stop structure 10 from interfering with the movement of the protective cover 8 from the extended position to the retracted position.

[0054] like Figures 1 to 6 As shown, in order to facilitate the disconnection and connection of the control circuit 31 by the protective cover 8, the laser measuring device also includes a first conductive part 19 and a second conductive part 32 respectively connected to the control circuit 31. The first conductive part 19 is located at the bottom of the protective cover 8. When the protective cover 8 moves, it causes the first conductive part 19 to separate from the second conductive part 32, thereby disconnecting the control circuit 31. When the protective cover 8 moves, it causes the first conductive part 19 to connect with the second conductive part 32, thereby connecting the control circuit 31.

[0055] In this embodiment, when the first conductive part 19 and the second conductive part 32 are separated, even if the laser emitter 3 and the laser receiver 4 are activated by the operation control board 5, the laser emitter 3 and the laser receiver 4 will not be activated. Afterwards, when the first conductive part 19 and the second conductive part 32 come into contact with each other, the laser emitter 3 and the laser receiver 4 will be activated smoothly by activating the operation control board 5. When the protective cover 8 is in the retracted position, the first conductive part 19 and the second conductive part 32 are in contact with each other, ensuring that the laser emitter 3 and the laser receiver 4 will only be activated when the protective cover 8 is in the retracted position. This can avoid accidental activation of the laser emitter 3 and the laser receiver 4, and also ensure that the protective cover 8 is always in the retracted position during measurement, thus ensuring the accuracy of the measurement.

[0056] like Figures 1 to 7As shown, a countersunk hole 20 is provided on the second conductive part 32, and a conductive arc plate 21 is provided on the side wall of the countersunk hole 20. The first conductive part 19 includes a conductive post. When the conductive post is located inside the countersunk hole 20 and its outer surface abuts against the conductive arc plate 21, the first conductive part 19 is connected to the second conductive part 32. After the first conductive part 19 and the second conductive part 32 come into contact with each other, the contact area can be increased, thereby improving the stability of electrical transmission. Furthermore, the material of the conductive arc plate 21 is an elastic conductor, and the conductive arc plate 21 can fit tightly against the conductive post, thereby further improving the stability of electrical transmission.

[0057] like Figures 1 to 6 As shown, the laser measuring device also includes a battery 2 and a display screen 7 connected to the control circuit. The battery 2 is housed inside the mounting housing 1, and the display screen 7 is mounted on the mounting housing 1. The control board 5 is equipped with control buttons 6. When the control circuit 31 is connected, the control buttons 6 control the laser emitter 3 and laser receiver 4 to turn on or off. The control board 5 records when the laser emitter 3 emits a laser beam. After receiving the laser beam, the laser receiver 4 sends a signal to the control board 5. The control board 5 compares the received signal with the time of the laser emitter 3's signal emission and calculates the distance. Both the control buttons 6 and the display screen 7 are located on the outer surface of the mounting housing 1. The user controls the start and stop via the control buttons 6, and can also send signals to the control board 5 to control whether the laser emitter 3 and laser receiver 4 are working. The control board 5 displays the calculated distance directly on the display screen 7. The battery 2 is a rechargeable battery, which can be charged through the charging port on the mounting housing 1. The battery 2 powers the display screen 7, control board 5, laser emitter 3, and laser receiver 4.

[0058] In this embodiment, the battery 2 is provided with a support rod that supports the laser emitter 3 and the laser receiver 4. The laser emitter 3, the laser receiver 4, and the control board 5 mentioned above are all existing technologies and are now widely used, so they will not be described in detail in this invention. For example, the laser emitter 3 and the laser receiver 4 can be GY-530VL53L0X laser ranging modules, and the control board 5 can be a single-chip microcomputer controller.

[0059] The present invention also provides a method for measuring cutting depth, wherein the cutting depth of the cable cutting edge 37 is measured using the aforementioned laser measuring device. The method for measuring cutting depth includes: attaching the top of the protective cover 8 to the outer surface of the cable 36, with the opening of the protective cover 8 aligned with the cutting edge 37; pressing the protective cover 8, pushing it to move from the extended position to the retracted position on the mounting housing 1; when the protective cover 8 is moved to the retracted position, the laser emitter 3 and laser receiver 4 in the control circuit 31 are energized; the operation control board 5 controls the laser emitter 3 and laser receiver 4, controlling the laser emitter 3 to emit laser light through the opening of the protective cover 8 and irradiate the cutting edge 37, and controlling the laser receiver 4 to receive the laser light reflected from the cutting edge 37 through the opening of the protective cover 8, so that the control board 5 measures the cutting depth of the cutting edge 37 by the time difference between emitting and receiving the laser light. Because the aforementioned laser measuring device can solve the problem of measurement errors caused by the misalignment of the laser measuring device and the cable 36 axis in related technologies, the cutting depth measurement method using the aforementioned laser measuring device can also solve the same technical problem. The opening of the aforementioned protective cover 8 is the second opening 35.

[0060] Specifically, the method for measuring the depth of cut includes the following steps:

[0061] Step 1: Fit the outer end face of the protective cover 8 with the side of the electrode, and align the laser emitter 3 and the laser receiver 4 with the cutting edge 37;

[0062] Step 2: Control the control board 5 to measure the cutting depth of the cutting edge 37 of the outer electrode of the cable 36 by controlling button 6;

[0063] Step 3: Make the first end of the drive structure 11 contact the outer side of the uncut cable 36, align the laser emitter 3 and the laser receiver 4 with the cable 36 after cutting the outer electrode, and press the mounting shell 1 vertically downwards so that the multiple drive structures 11 on the protective cover 8 are evenly stressed, so that the drive structure 11 slides smoothly. At this time, the stop structure 10 is in the disengaged position, so that the protective cover 8 retracts into the interior of the mounting shell 1. At the same time, the first conductive part 19 and the second conductive part 32 are connected to the control circuit, so that the laser emitter 3 emits laser light outwards and the laser receiver 4 receives the reflected laser light. The cutting depth is measured by the time difference between emitting and receiving the laser light.

[0064] Step 4: After the laser emitter 3 emits a laser beam, the protective cover 8 rotates around the cable 36 for one revolution, and the cutting depth of the cutting edge 37 of the cable 36 is measured.

[0065] Step 5: Display the measured cutting depth on display screen 7.

[0066] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A laser measuring device, characterized in that, include: Mounting housing (1), the top of which has a first opening (33); The control board (5) and the control line (31) are both mounted on the mounting shell (1), and the control board (5) is connected to the control line (31); Both the laser emitter (3) and the laser receiver (4) are disposed inside the mounting housing (1) and connected to the control circuit (31); A protective cover (8) is movably nested on the mounting shell (1) and controls the disconnection and connection of the control line (31). When the protective cover (8) moves, it has an extended position that disconnects the control line (31) and a retracted position that connects the control line (31). The bottom of the protective cover (8) passes through the first opening (33) and is located inside the mounting shell (1). The outer wall of the protective cover (8) is fitted to the inner wall of the mounting shell (1). The top of the protective cover (8) is located outside the mounting shell (1). The top of the protective cover (8) is provided with a second opening (35) to avoid the laser emitter (3) and the laser receiver (4). There is a first distance between the plane where the laser emitter (3) and the second opening (35) are located, and there is a second distance between the plane where the laser receiver (4) and the second opening (35) are located. The second distance is equal to the first distance. The laser measuring device also includes a first conductive part (19) and a second conductive part (32) respectively connected to the control line (31). The first conductive part (19) is disposed at the bottom of the protective cover (8). When the protective cover (8) moves, it causes the first conductive part (19) to separate from the second conductive part (32), thereby disconnecting the control line (31). When the protective cover (8) moves, it causes the first conductive part (19) to connect with the second conductive part (32), thereby turning on the control line (31). The second conductive part (32) is provided with a countersunk hole (20), and a conductive arc plate (21) is provided on the side wall of the countersunk hole (20). The first conductive part (19) includes a conductive post. When the conductive post is located in the countersunk hole (20) and the outer side of the conductive post abuts against the conductive arc plate (21), the first conductive part (19) is connected to the second conductive part (32).

2. The laser measuring device according to claim 1, characterized in that, The laser measuring device also includes a stop structure (10) that can be retractably mounted on the protective cover (8). The mounting shell (1) is provided with a recess (34). The stop structure (10) has a stop position that cooperates with the recess (34) and a disengagement position that disengages from the recess (34). When the stop structure (10) is in the stop position, the protective cover (8) remains in the extended position. When the stop structure (10) is in the disengagement position, the protective cover (8) switches between the extended position and the retracted position.

3. The laser measuring device according to claim 2, characterized in that, The laser measuring device also includes a drive structure (11) movably disposed within the protective cover (8). The first end of the drive structure (11) extends from the second opening (35) to the outside of the protective cover (8). The second end of the drive structure (11) can drive and cooperate with the stop structure (10). When the drive structure (11) moves, it has a pushing position and a yielding position. When the drive structure (11) is in the pushing position, the second end of the drive structure (11) drives the stop structure (10) to move from the stop position to the disengagement position. When the drive structure (11) is in the yielding position, the stop structure (10) can move from the disengagement position to the stop position.

4. The laser measuring device according to claim 3, characterized in that, The drive structure (11) includes a drive rod (12) and a drive wedge (13). The first end of the drive rod (12) extends from the second opening (35) to the outside of the protective cover (8). The drive wedge (13) is connected to the second end of the drive rod (12). The stop structure (10) is provided with a drive hole (14) for the drive wedge (13) to be inserted. The drive wedge (13) can push against the wall of the drive hole (14).

5. The laser measuring device according to claim 3, characterized in that, The second end of the drive structure (11) is provided with a first drive ramp (111), and the stop structure (10) is provided with a second drive ramp (103) that abuts against the first drive ramp (111). The distance between the first drive ramp (111) and the inner side of the protective cover (8) gradually decreases from the top to the bottom of the protective cover (8).

6. The laser measuring device according to claim 3, characterized in that, A guide sleeve (16) is provided on the inner wall of the protective cover (8). The axis of the guide sleeve (16) is parallel to the moving direction of the protective cover (8). The driving structure (11) passes through the inner hole of the guide sleeve (16) and is guided and engaged with the guide sleeve (16).

7. The laser measuring device according to claim 6, characterized in that, A first elastic element (15) is provided between the guide sleeve (16) and the drive structure (11), and the first elastic element (15) applies a first tension to the drive structure (11) to keep the drive structure (11) in the avoidance position.

8. The laser measuring device according to claim 3, characterized in that, The first end face of the drive structure (11) is provided with a plurality of rolling elements (22), and the first end face of the drive structure (11) is parallel to the plane where the second opening (35) is located.

9. The laser measuring device according to claim 3, characterized in that, The stop structure (10) includes a stop plate (101) and a connecting plate (102) vertically connected to the stop plate (101). The stop plate (101) can be inserted into the recess (34) to stop and cooperate with the recess (34). The connecting plate (102) contacts and cooperates with the bottom of the protective cover (8). A second elastic member (18) is provided between the connecting plate (102) and the inner sidewall of the protective cover (8). The second elastic member (18) applies a second tension to the connecting plate (102) to keep the stop structure (10) in the stop position.

10. The laser measuring device according to claim 1, characterized in that, A third elastic element (9) is provided between the bottom of the mounting shell (1) and the bottom of the protective cover (8), and the third elastic element (9) applies a thrust to the protective cover (8) so that the protective cover (8) is in the extended position.

11. The laser measuring device according to claim 1, characterized in that, The laser measuring device also includes a battery (2) and a display screen (7) connected in the control circuit. The battery (2) is disposed inside the mounting housing (1), and the display screen (7) is disposed on the mounting housing (1). The control board (5) is provided with control buttons (6). When the control line (31) is turned on, the laser emitter (3) and the laser receiver (4) are turned on or off by the control buttons (6).

12. A method for measuring cutting depth, characterized in that, The cutting depth of the cable's cut edge (37) is measured using the laser measuring instrument described in any one of claims 1 to 11, wherein the method for measuring the cutting depth includes: The top of the protective cover (8) is attached to the outer surface of the cable (36), and the opening of the protective cover (8) is aligned with the cutting edge (37). Press against the protective cover (8) to push the protective cover (8) on the mounting shell (1) from the extended position to the retracted position and stop; When the protective cover (8) is moved to the retracted position, the laser emitter (3) and laser receiver (4) in the control circuit (31) can be powered on; The operation control board (5) controls the laser emitter (3) and the laser receiver (4), controlling the laser emitter (3) to emit laser light through the opening of the protective cover (8) to irradiate the cutting edge (37), and controlling the laser receiver (4) to receive the laser light reflected from the cutting edge (37) through the opening of the protective cover (8), so that the control board (5) can measure the cutting depth of the cutting edge (37) by the time difference between emitting and receiving the laser light.

Images