Laser detection equipment

Abstract

The invention discloses laser detection equipment, and relates to the technical field of laser detection, the laser detection equipment comprises a laser detector main body and a laser module, the laser detector main body is supported on a road surface through a tripod, a pendulum bob mechanism is connected to the top of the laser module, and the pendulum bob mechanism at least comprises a mounting rod with one end extending to the outside of the laser detector main body; the connector is arranged on the mounting rod in a sleeving manner, and the connector rotates around the outer wall of the mounting rod. When whether the airport lighting equipment is bent or not is measured, the driving assembly drives the protruding part to move and extrudes the limiting part so that the protruding part can be jacked into the connector through the limiting hole, due to the fact that the perimeter of the limiting hole is small, the limiting part partially stretches out to tightly abut against the connector, the connector is prevented from rotating along the mounting rod, and then the mounting rod is rotated clockwise; when the laser module is rotated, the joint and the laser module are driven to rotate together, so that the transmitting end of the laser module inclines upwards, and the transmitting end of the laser module can incline downwards by rotating the joint anticlockwise only through small-amplitude rotation.

Description

Technical Field

[0001] The invention relates to the technical field of laser detection, in particular to a laser detection device. Background Art

[0002] Airport runway lights are required to be arranged in a straight line during installation and maintenance. This is to provide pilots with clear and accurate visual guidance and ensure that the aircraft can fly in the correct direction during takeoff and landing. Laser detection equipment can emit a highly collimated laser beam, which can be used as an accurate straight line reference benchmark. Therefore, it plays an important role in the inspection and maintenance of airport runway lights.

[0003] Most laser levels have an automatic leveling function, which automatically adjusts the laser emission module inside the laser through internal gravity pendulums or electronic sensors to keep it level at all times. When using lasers to measure lighting devices such as airport street lights, runway lights, and obstacle lights, the light poles and cantilevers may be deformed due to long-term natural environmental influences or external forces. Therefore, the laser beam needs to be tilted upward or downward to irradiate different parts of the light poles and cantilevers.

[0004] By observing the changes in the reflection and refraction paths of the laser on its surface, it is possible to indirectly detect whether the lamp pole and cantilever are bent, twisted or otherwise deformed. For example, if the reflection point of the laser beam on the surface of the lamp pole is significantly offset, it indicates that the lamp pole is deformed and further inspection and assessment of its structural safety is required.

[0005] Since the existence of devices such as gravity pendulums and electronic sensors is to ensure that the laser beam remains completely horizontal regardless of whether the laser is placed flat or not, the laser emission lens needs to be always horizontal. In the prior art, a prism is usually installed in front of the emission port of the laser detection equipment. By adjusting the angle of the prism, the originally horizontal laser beam can be changed to an upward or downward tilted angle to meet the needs of detecting airport street lights or other lights at different heights and angles;

[0006] However, the angle that a prism can refract is limited. Based on the horizontal line in the initial state, the maximum upward or downward tilt angle can only be around 60 to 70 degrees. This is because when light is emitted from a denser medium to a less dense medium, there is a critical angle. When the incident angle is greater than the critical angle, total reflection will occur. For a prism, as the incident angle of the laser increases, the angle of the refracted light will also increase. However, when the refraction angle approaches 60 or 70 degrees, if the incident angle continues to increase, it is easy to reach the critical angle and total reflection will occur, making it impossible for the light to be refracted in the expected direction.

[0007] Secondly, the lens of the laser head usually has only one side of the lens, and the size of the lens is limited. When the laser beam is refracted through a prism to tilt upward or downward, if the refraction angle is too large, the propagation direction of the laser beam will change significantly after being refracted by the lens, and then exceed the effective range of the lens. Once it exceeds the range of the lens, the laser will irradiate the shell wrapped around the lens, causing the laser to be unable to propagate. Summary of the invention

[0008] The object of the present invention is to provide a laser detection device to solve the problems raised in the above background technology.

[0009] In order to solve the above technical problems, the present invention provides a laser detection device, including a laser detector body and a laser module, the laser detector body is supported on the road surface by a tripod, and a pendulum mechanism is connected to the top of the laser module, which at least includes a mounting rod with one end extending to the outside of the laser detector body, and a joint sleeved on the mounting rod, so that the joint rotates around the outer wall of the mounting rod; a cavity is provided inside the mounting rod, and the cavity is opened along the axial extension of the mounting rod; it also includes a switching mechanism, which is arranged inside the cavity, and the switching mechanism includes at least one limiting hole, which is arranged in the cavity at a corresponding position of the joint sleeved on the mounting rod; a limiting part, which can partially protrude from the limiting hole; a driving component, which is arranged inside the cavity, is used for its driving end to squeeze the limiting part protruding from the limiting hole and abut against the side wall of the joint.

[0010] Further, the driving assembly includes,

[0011] The limiting plate is arranged in the cavity at the corresponding position of the joint sleeve on the mounting rod; the moving rod can slide through the limiting plate and move along the extension direction of the cavity, and a protrusion is arranged on the outer peripheral wall of the moving rod. The limiting portion is located in the cavity between the limiting plate and the protrusion, so that when the moving rod moves in the cavity, the protrusion squeezes the limiting portion so that the protruding limiting hole of the limiting portion abuts against the joint.

[0012] Furthermore, there are a plurality of limiting holes which are arranged at equal intervals around the outer peripheral wall of the mounting rod, and a limiting portion is arranged in the cavity corresponding to each limiting hole;

[0013] The raised part is a spherical structure with a perforation and is fixedly sleeved on the moving rod.

[0014] Furthermore, the pendulum mechanism also includes:

[0015] A support rod is inserted into the interior of the joint, and the outer wall of the support rod is rotatably connected to the inner wall of the joint;

[0016] Two connecting blocks are installed on the top of the laser module at intervals and sleeved on the support rod, and the inner wall of the connecting block is connected to the outer wall of the support rod;

[0017] The jack is arranged on the joint, and the joint is sleeved on the mounting rod through the jack. There is a gap between the position where the limiting part extends to the outside through the limiting hole and the inner wall of the jack.

[0018] Furthermore, two groups of limiting parts are provided in the cavity of the mounting rod, and a gap is provided between the two groups of limiting parts. One end of the moving rod away from the rotating rod passes through the two groups of limiting parts and is rotatably connected to the inner wall of the mounting rod. The outer wall of the limiting part abuts against the outer wall of the moving rod, and a plurality of limiting parts are arranged around the periphery of the moving rod at equal intervals.

[0019] Furthermore, the laser detector body is provided with a socket for the installation rod to pass through, one end of the installation rod is inserted into the socket and extends to the outside of the laser detector body, the inner wall of the socket is abutted against the outer wall of the installation rod, a circle of Velcro is installed on the inner wall of the socket, and a circle of female Velcro is installed on the outer wall of the installation rod located in the socket, and the child Velcro is adhered to the female Velcro.

[0020] Furthermore, the driving assembly also includes a rotating rod slidably connected to the cavity of the mounting rod, the outer wall of the rotating rod is provided with a sliding groove, the bottom end of the sliding groove is arranged in a direction away from the joint, one end of the rotating rod extends to the outside of the cavity, and the other end is located inside the cavity and connected to one end of the moving rod, the inner wall of the cavity is connected to a sliding block, one end of the sliding block is connected to the inner wall of the cavity, and the other end is located inside the sliding groove and slidably connected thereto.

[0021] Further, the number of the slide grooves and the number of sliders are both two, and there is a gap between the two slide grooves and the two sliders. The inner wall of the slide groove is provided with a plurality of air extraction grooves and a plurality of square openings. The air extraction grooves and the square openings are alternately arranged at equal intervals along the extension direction of the slide groove. One end of the square opening is an inlet end, which is connected to the slide groove. An extrusion block is slidably arranged in the square opening, and one end of the extrusion block is arc-shaped and protrudes from the inlet end of the square opening.

[0022] A mounting block is installed on the top of the extrusion block, and a piston is installed at one end of the mounting block away from the air extraction groove. The piston is located inside the air extraction groove, and the outer wall of the piston is connected to the inner wall of the air extraction groove;

[0023] A support rod is installed on the inner wall of the square opening, and a torsion spring is wound around the outer wall of the support rod. The extrusion block is provided with a movable groove, and the support rod and the torsion spring are both located inside the movable groove, and a spacing is left between the support rod, the torsion spring and the movable groove. The extrusion block is provided with two symmetrical swinging grooves, and both of the two swinging grooves are provided with arc surfaces, and the arc surfaces of the two swinging grooves are both facing the same direction, and the two torsion arms protruding up and down the torsion spring extend into the two swinging grooves respectively.

[0024] Furthermore, the rotating rod is provided with a plurality of chambers connected with the square openings, each chamber corresponds to one of the square openings, the extrusion block is slidably arranged between the chamber and the square opening, and the outer wall of the extrusion block abuts against the inner wall of the chamber and the square opening.

[0025] Furthermore, one end of the slider is hemispherical, and the other end is arranged to fit the inner wall of the slide groove. The outer wall of the slider is against the inner wall of the slide groove. The mounting rod is provided with two accommodating cavities for accommodating the sliders. A rotating shaft is installed on the inner wall of the accommodating cavity. The slider is rotatably connected to the outer wall of the rotating shaft. An elastic member is connected between the inner wall of the accommodating cavity and the outer wall of the slider, and the initial shape of the elastic member is an arc.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the present invention, when measuring whether the airport lighting equipment is bent, the driving component drives the protrusion to move and squeeze the limiting part, so that it is pushed into the joint through the limiting hole. Since the circumference of the limiting hole is small, the limiting part partially extends and tightly abuts against the joint, preventing the joint from rotating along the mounting rod. Then, the mounting rod is rotated clockwise. Due to the obstruction of the limiting part, the joint and the laser module are driven to rotate together, so that the emitting end of the laser module is tilted upward, and only a small rotation is required. Similarly, rotating the joint counterclockwise can make the emitting end of the laser module tilt downward.

[0028] 2. In the present invention, in order to prevent the device from rotating back after adjustment, the socket is tightly connected to the mounting rod and is equipped with a Velcro strap, the hook surface of which is a plastic hook. When it is lifted up, the vertical pulling force is easy to unhook, and when the mounting rod is rotated, the tangential force is dispersed among many hook points. The force on a single point is small, the rotation resistance is large, and a large torque is required to rotate. Therefore, the friction force of the Velcro strap can support its angle of inclination.

[0029] 3. In the present invention, the rotating rod is rotated, and its slide groove rotates along the slider. After the slider encounters the extrusion block, it drives the mounting block and the piston to move to the left, so that the piston extracts the gas in the suction groove to form a negative pressure, sucking the slider. Because there are multiple suction grooves, it is not easy to return to the original position after the rotating rod is rotated to a suitable position and released. When the extrusion block moves, the moving groove moves along the fixed support rod, the torsion spring is deformed, and the torsion spring automatically rebounds when the slider is not extruded. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the connection structure between the support rod and the connection block in the present invention;

[0032] Figure 3 It is a schematic diagram of the connection structure between the limiting part and the limiting hole in the present invention;

[0033] Figure 4It is a schematic diagram of the connection structure between the slider and the accommodating cavity in the present invention;

[0034] Figure 5 It is a schematic diagram of the connection structure between the extrusion block and the square opening in the present invention;

[0035] Figure 6 It is a schematic diagram of the connection structure between the slider and the extrusion block in the present invention;

[0036] Figure 7 It is a schematic diagram of the connection structure between the support rod and the torsion spring in the present invention;

[0037] Figure 8 It is a front view schematic diagram of the chute in the present invention;

[0038] Fig. 9 It is a side view schematic diagram of the chute in the present invention;

[0039] Fig.10 for Figure 2 A magnified view of the structure at center A;

[0040] Fig.11 for Figure 2 A magnified view of the structure at B in the middle;

[0041] Fig.12 for Figure 6 Enlarged view of the structure at C in the middle.

[0042] In the figure: 1. Laser detector body;

[0043] 2. Tripod; 3. Laser module; 4. Support rod; 5. Connecting block; 6. Joint; 7. Mounting rod; 8. Socket; 9. Rotating rod; 10. Moving rod; 11. Limiting part; 101. Protruding part; 12. Limiting plate; 13. Limiting hole; 14. Slide groove; 15. Sliding block; 16. Rotating shaft; 17. Accommodating chamber; 18. Exhaust groove; 19. Extrusion block; 20. Chamber; 21. Mounting block; 22. Square opening; 23. Piston; 24. Support rod; 25. Torsion spring; 26. Moving groove; 27. Swinging groove; 28. Elastic member; 29. ​​Socket. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The present invention provides a technical solution:

[0046] See also Figure 1-Figure 11As shown, a laser detection device includes a laser detector body 1 and a laser module 3. The laser detector body 1 is supported on the road surface by a tripod 2. A pendulum mechanism is connected to the top of the laser module 3, which includes at least a mounting rod 7 with one end extending to the outside of the laser detector body 1, and a joint 6 sleeved on the mounting rod 7, so that the joint 6 rotates around the outer wall of the mounting rod 7; a cavity is provided inside the mounting rod 7, and the cavity is extended and opened along the axial direction of the mounting rod 7; and a switching mechanism is also provided inside the cavity, and the switching mechanism includes,

[0047] At least one limiting hole 13 is provided in the cavity at the corresponding position of the joint 6 sleeved on the mounting rod 7;

[0048] The limiting portion 11 may be partially protruded from the limiting hole 13;

[0049] The driving component is arranged inside the cavity, and is used for its driving end to squeeze the limiting portion 11 out of the limiting hole 13 and abut against the side wall of the joint 6.

[0050] The circumference of the limiting hole 13 is slightly smaller than the maximum circumference of the limiting portion 11 .

[0051] The laser detector body 1 is fixedly mounted on the top of the tripod 2. After the tripod 2 is fixed on the ground, the laser module 3 can be automatically adjusted to a horizontal state through gravity through the pendulum mechanism. First, the initial state of the laser module 3 is a horizontal parallel state. When it is necessary to measure whether the lighting equipment of the airport is bent, Figure 3 From the perspective of , the driving assembly drives the protrusion 101 to move to the left;

[0052] When the protruding portion 101 moves to the left, it squeezes the limiting portion 11. The limiting portion 11 is squeezed and pushes toward the connector 6 through the limiting hole 13. Since the circumference of the limiting hole 13 is smaller than the maximum circumference of the limiting portion 11, the limiting portion 11 will not fall out of the limiting hole 13. Only a part of the limiting portion 11 will extend out of the limiting hole 13. After the part of the limiting portion 11 extends through the limiting hole 13, it will abut against the connector 6. At this time, the connector 6 cannot rotate along the mounting rod 7. Then, the mounting rod 7 continues to rotate clockwise in the same direction. Since the limiting portion 11 abuts against the connector 6, the limiting portion 11 cannot continue to move. When it continues to rotate, it will drive the mounting rod 7 and the connector 6 to rotate in the clockwise direction. When the connector 6 rotates in the clockwise direction, it will drive the laser module 3 to rotate in the clockwise direction, so that the end of the laser module 3 that emits the laser is tilted upward.

[0053] The joint 6 and the laser module 3 only need to be rotated within a small range, and the laser module 3 can be tilted without rotating a full circle;

[0054] Conversely, by rotating the joint 6 counterclockwise, the end of the laser module 3 emitting laser light can be tilted downward.

[0055] See also Figure 3 and Fig.10 , the drive components include,

[0056] The limiting plate 12 is arranged in the cavity at the corresponding position of the joint 6 sleeved on the mounting rod 7;

[0057] The moving rod 10 can slide through the limiting plate 12 and move along the extension direction of the cavity. A protrusion 101 is provided on the outer peripheral wall of the moving rod 10. The limiting portion 11 is located in the cavity between the limiting plate 12 and the protrusion 101. When the moving rod 10 moves in the cavity, the protrusion 101 squeezes the limiting portion 11 so that the protruding limiting hole 13 abuts against the joint 6.

[0058] The outer wall of the limiting plate 12 is fixedly connected to the inner wall of the mounting rod 7 , and the limiting plate 12 is slidably connected to the moving rod 10 .

[0059] The limiting plate 12 blocks the limiting portion 11. Figure 3 From the perspective in , since the moving rod 10 and the protruding portion 101 are moving toward the left, a leftward thrust is generated on the limiting portion 11. In order to prevent the limiting portion 11 from being pushed away from the limiting hole 13, the limiting plate 12 blocks the left side of the limiting portion 11. Therefore, when the limiting portion 11 is pushed to the left again, the limiting portion 11 cannot move to the left and can only move toward the outside of the limiting hole 13. The moving rod 10 is inserted through the limiting plate 12, so the moving rod 10 can move freely along the inner wall of the limiting plate 12. There is a gap between one end of the moving rod 10 and the mounting rod 7, and this gap provides a movable space for the moving rod 10.

[0060] See also Figure 3 and Fig.10 There are a plurality of limiting holes 13, which are arranged at equal intervals around the outer peripheral wall of the mounting rod 7, and a limiting portion 11 is arranged in the cavity corresponding to each limiting hole 13;

[0061] The protrusion 101 is a spherical structure with a hole and is fixedly sleeved on the moving rod 10 .

[0062] The three limiting portions 11 are in a triangular shape and surround the periphery of the moving rod 10, and the moving rod 10 just passes through the middle part between the three limiting portions 11, so the three limiting portions 11 are all against the outer wall of the moving rod 10, and the protrusion 101 corresponds to the center part between the three limiting portions 11, so when the moving rod 10 and the protrusion 101 move to the left, the protrusion 101 will squeeze the three limiting portions 11 at the same time, and the protrusion 101 has a perforation, which is convenient for being put on the outer wall of the moving rod 10, and then the inner wall of the perforation of the protrusion 101 is fixedly connected to the outer wall of the moving rod 10, and the protrusion 101 is spherical, which can simultaneously and evenly transfer force to the three limiting portions 11.

[0063] See also Figure 2-Figure 3 , the pendulum mechanism also includes,

[0064] The support rod 4 is inserted into the inside of the joint 6, and the outer wall of the support rod 4 is rotatably connected to the inner wall of the joint 6;

[0065] Two connecting blocks 5 are fixedly installed on the top of the laser module 3 at intervals, and are sleeved on the support rod 4, and the inner wall of the connecting block 5 is fixedly connected to the outer wall of the support rod 4;

[0066] The plug hole 8 is provided on the connector 6 , and the connector 6 is sleeved on the mounting rod 7 through the plug hole 8 . There is a gap between the portion where the limiting portion 11 extends to the outside through the limiting hole 13 and the inner wall of the plug hole 8 .

[0067] by Figure 2 From the perspective of, when the laser detector body 1 tilts left or right, due to the gravity of the laser module 3, the support rod 4 will rotate along the inner wall of the joint 6, so that the laser module 3 always remains vertical. Then, when the laser detector body 1 tilts forward or backward, the joint 6 will rotate along the outer wall of the mounting rod 7 due to gravity, so that the laser module 3 remains horizontal, and the laser module 3 is horizontally vertical. It is worth noting that the joint 6 is located in the middle of the support rod 4, so the support rods 4 at the front and rear ends of the joint 6 have the same weight and the same length;

[0068] The socket 8 is a space provided by the connector 6 for being mounted on the mounting rod 7, so that the connector 6 can rotate along the outer wall of the mounting rod 7 through the socket 8. Figure 2 In the embodiment, a baffle having an area larger than that of the insertion hole 8 is installed at one end of the mounting rod 7 close to the joint 6, so as to prevent the joint 6 from accidentally sliding off the mounting rod 7;

[0069] When the limiting portion 11 is squeezed by the protruding portion 101, a partial area of ​​the limiting portion 11 extends out through the limiting hole 13 and squeezes the inner wall of the insertion hole 8, and then the joint 6 can be propped up, so that the joint 6 can no longer rotate along the outer wall of the mounting rod 7. At this time, rotating the rotating rod 9 can rotate the mounting rod 7 and the joint 6 together.

[0070] See also Figure 3 Two groups of limiting parts 11 are provided in the cavity of the mounting rod 7, and there is a gap between the two groups of limiting parts 11. One end of the moving rod 10 away from the rotating rod 9 passes through the two groups of limiting parts 11 and is rotatably connected to the inner wall of the mounting rod 7. The outer wall of the limiting part 11 abuts against the outer wall of the moving rod 10, and multiple limiting parts 11 are arranged around the periphery of the moving rod 10 at equal intervals.

[0071] by Figure 3From the perspective of , when the moving rod 10 moves to the left, it will drive the two protrusions 101 to move simultaneously and squeeze the two groups of limiting parts 11 at the same time. The three limiting parts 11 in each group correspond to the three limiting holes 13 respectively. The two groups of limiting parts 11 are set to increase the contact between more limiting parts 11 and the jack 8, so as to support the joint 6 more stably. Since the moving rod 10 is inserted in the middle part of the three limiting parts 11, the limiting part 11 is supported by the moving rod 10 and will not disperse.

[0072] See also Figure 2 and Fig.11 The laser detector body 1 is provided with a socket 29 for the installation rod 7 to pass through. One end of the installation rod 7 is inserted into the socket 29 and extends to the outside of the laser detector body 1. The inner wall of the socket 29 is against the outer wall of the installation rod 7. A circle of Velcro is installed on the inner wall of the socket 29. A circle of female Velcro is installed on the outer wall of the installation rod 7 located in the socket 29, and the child Velcro is adhered to the female Velcro.

[0073] The mounting rod 7 extends to the outside of the laser detector body 1 through the socket 29, and the mounting rod 7 is rotated along the socket 29. In order to prevent the mounting rod 7 from easily rotating back to its original position after the angle of the laser module 3 is adjusted, the socket 29 is tightly connected to the mounting rod 7 in the initial state. In order to further ensure that there is no slipping, a mother-and-child Velcro is installed at the corresponding positions of the mounting rod 7 and the socket 29, so that the mother Velcro on the outer wall of the mounting rod 7 and the child Velcro on the inner wall of the socket 29 are adhered to each other;

[0074] The hook surface of the Velcro is composed of many tiny plastic hooks. When the Velcro is peeled upward, the force applied is mainly a pulling force perpendicular to the sticking surface, which is roughly consistent with the bending direction of the hook on the hook surface, so that the hook can be relatively easily removed from the fiber ring of the fleece surface. However, it will not be easily separated when applied here. This is because if the mounting rod 7 is to be rotated, the force applied between the mother Velcro and the child Velcro is along the tangent direction of the circumference, and this force will be dispersed to many hook points on the entire circumference. Since the force is dispersed, the effective force on each hook point is relatively small. However, due to the large number of hook points and their mutual synergy, the overall rotation resistance is large, and a large torque is required to achieve rotation.

[0075] Therefore, the mounting rod 7 can only be rotated by hand, and since the laser module 3 itself is relatively small in weight, with the common ones on the market being only about 500 grams, the friction force of the Velcro is sufficient to support the angle of inclination of the laser module 3.

[0076] See also Figure 3-Figure 12The driving assembly also includes a rotating rod 9 slidably connected to the cavity of the mounting rod 7, a sliding groove 14 is provided on the outer wall of the rotating rod 9, and the bottom end of the sliding groove 14 is arranged in a direction away from the joint 6. One end of the rotating rod 9 extends to the outside of the cavity, and the other end is located inside the cavity and fixedly connected to one end of the moving rod 10. A slider 15 is fixedly connected to the inner wall of the cavity, and one end of the slider 15 is fixedly connected to the inner wall of the cavity, and the other end is located inside the sliding groove 14 and slidably connected thereto.

[0077] The outer wall of the rotating rod 9 is in close contact with the inner wall of the cavity. The rotating rod 9 is manually turned outside the laser detector body 1 to rotate. Figure 3 From the perspective of FIG. 1 , when the rotating rod 9 is turned clockwise, the slide groove 14 on the rotating rod 9 will rotate to the right along the slider 15. Since the slide groove 14 in this perspective is offset from left to right from top to bottom, the area below the right side of the slide groove 14 gradually reaches the slider 15, and the rotating rod 9 will also gradually move to the left. When the rotating rod 9 moves, it will drive the moving rod 10 and the protrusion 101 to move to the left together.

[0078] When the moving rod 10 and the protruding portion 101 move to the left, the protruding portion 101 will squeeze the three limiting portions 11 at the same time. The limiting portion 11 will be squeezed and will push toward the connector 6 through the limiting hole 13. Since the circumference of the limiting hole 13 is smaller than the maximum circumference of the limiting portion 11, the limiting portion 11 will not fall out of the limiting hole 13. Only a part of the limiting portion 11 will extend out of the limiting hole 13. After the part of the limiting portion 11 extends through the limiting hole 13, it will abut against the connector 6. At this time, the connector 6 cannot rotate along the mounting rod 7. Then the rotating rod 9 continues to rotate in the same direction. Since the limiting portion 11 abuts against the connector 6, the limiting portion 11 cannot continue to move, and the rotating rod 9 cannot continue to move to the left. Therefore, when the rotating rod 9 continues to rotate, it will drive the mounting rod 7 and the connector 6 to rotate in the clockwise direction. When the connector 6 rotates in the clockwise direction, it will drive the laser module 3 to rotate in the clockwise direction, so that the end of the laser module 3 that emits the laser is tilted upward.

[0079] The joint 6 and the laser module 3 only need to be rotated within a small range, and the laser module 3 can be tilted without rotating a full circle;

[0080] Conversely, by rotating the rotating rod 9 counterclockwise, the end of the laser module 3 emitting laser light can be tilted downward;

[0081] There is a gap between the end of the moving rod 10 away from the rotating rod 9 and the mounting rod 7. The gap provides a movable space for the moving rod 10, and the end of the rotating rod 9 away from the moving rod 10 also extends out of the laser detector body 1 through the end of the mounting rod 7 located outside the laser detector body 1, making it convenient to rotate the rotating rod 9 outside the laser detector body 1.

[0082] See also Figure 3-Figure 12, there are two slide grooves 14 and two sliders 15, and there is a gap between the two slide grooves 14 and the two sliders 15, the inner wall of the slide groove 14 is provided with a plurality of air extraction grooves 18 and a plurality of square openings 22, the air extraction grooves 18 and the square openings 22 are alternately arranged at equal intervals along the extension direction of the slide groove 14, one end of the square opening 22 is the entrance end, the entrance end is connected with the slide groove 14, an extrusion block 19 is slidably arranged in the square opening 22, one end of the extrusion block 19 is arc-shaped and protrudes from the entrance end of the square opening 22;

[0083] A mounting block 21 is fixedly mounted on the top of the extrusion block 19, and a piston 23 is fixedly mounted on one end of the mounting block 21 away from the air extraction groove 18. The piston 23 is located inside the air extraction groove 18, and the outer wall of the piston 23 is fixedly connected to the inner wall of the air extraction groove 18;

[0084] A support rod 24 is fixedly installed on the inner wall of the square opening 22, and a torsion spring 25 is wound around the outer wall of the support rod 24. The extrusion block 19 is provided with a movable groove 26. The support rod 24 and the torsion spring 25 are both located inside the movable groove 26, and a spacing is left between the support rod 24, the torsion spring 25 and the movable groove 26. The extrusion block 19 is provided with two symmetrical swing grooves 27, and the two swing grooves 27 are both provided with arc surfaces. The arc surfaces of the two swing grooves 27 are both facing the same direction, and the two torsion arms protruding up and down of the torsion spring 25 extend into the two swing grooves 27 respectively.

[0085] by Figure 5 , Figure 6 and Figure 7 From the perspective of , when the rotating rod 9 is rotated, the slide groove 14 will rotate along the slider 15. When the slider 15 reaches the extrusion block 19, it will squeeze the extrusion block 19. After being squeezed, the extrusion block 19 will move to the left, and the extrusion block 19 will drive the mounting block 21 and the piston 23 to move to the left together. When the piston 23 moves to the left, it will move along the air extraction groove 18. The entrance end of the air extraction groove 18 corresponds to the inside of the slide groove 14. When one hemispherical end of the slider 15 conflicts with the extrusion block 19, the part of the slider 15 that fits the slide groove 14 at the back will conflict with the entrance of the air extraction groove 18. Then the movement of the piston 23 will extract the gas in the air extraction groove 18, and then the gas will enter from the entrance of the air extraction groove 18. Since the slider 15 blocks the entrance of the air extraction groove 18, a negative pressure will be formed in the air extraction groove 18, and the slider 15 will also be sucked by the entrance end of the air extraction groove 18.

[0086] The slide groove 14 is provided with a plurality of suction grooves 18 for adsorbing the slider 15. Therefore, after the rotating rod 9 is rotated to a suitable position, since the slider 15 is fixed at a certain position in the slide groove 14, the rotating rod 9 will not easily rotate back to the original position even if the rotating rod 9 is released;

[0087] When the extrusion block 19 moves, the moving groove 26 moves along the support rod 24. Figure 7As shown in the figure, the left and right widths of the movable groove 26 provide space for the extrusion block 19 to move, and the support rod 24 is fixed inside the square opening 22, the torsion spring 25 is wound around the outer wall of the support rod 24, and the two extended torsion arms extend into the two swing grooves 27 respectively. When the extrusion block 19 moves to the left, the inner wall on the right side of the swing groove 27 will push the torsion arm to move to the left, as shown in FIG. Fig.12 As shown in the figure, the torsion arm will bend and deform to the left, and the right side of the movable slot 26 will be close to the support rod 24 and the torsion spring 25. When the slider 15 no longer squeezes the squeezing block 19, the torsion spring 25 will automatically bounce back to its original position.

[0088] See also Figure 5-Figure 6 The rotating rod 9 is provided with a plurality of chambers 20 connected with the square openings 22 , each chamber 20 corresponds to one of the square openings 22 , and the extrusion block 19 is slidably disposed between the chamber 20 and the square opening 22 , and the outer wall of the extrusion block 19 abuts against the inner wall of the chamber 20 and the square opening 22 .

[0089] The rotating rod 9 opens multiple chambers 20, and each chamber 20 is individually connected to one of the square openings 22, so the number of chambers 20 and the number of square openings 22 are the same. When moving, the extrusion block 19 moves along the inside of the chamber 20, and the outer walls of the extrusion block 19 and the mounting block 21 also abut against the inner wall of the chamber 20.

[0090] See also Figure 5-Figure 6 One end of the slider 15 is hemispherical, and the other end is arranged to fit the inner wall of the slide groove 14. The outer wall of the slider 15 is against the inner wall of the slide groove 14. The mounting rod 7 is provided with two accommodating cavities 17 for accommodating the slider 15. The inner wall of the accommodating cavity 17 is fixedly installed with a rotating shaft 16. The slider 15 is rotatably connected to the outer wall of the rotating shaft 16. An elastic member 28 is fixedly connected between the inner wall of the accommodating cavity 17 and the outer wall of the slider 15. The initial shape of the elastic member 28 is arc-shaped.

[0091] One end of the slider 15 is hemispherical, and is used to first contact and squeeze the squeezing block 19 when sliding along the slide groove 14, and the part where the squeezing block 19 fits the slide groove 14 is used to conveniently block the entrance of the exhaust groove 18;

[0092] by Figure 5 From the perspective of FIG. 1 , the accommodating cavity 17 provides a space for the top of the slider 15 to be placed. Both ends of the rotating shaft 16 are fixedly connected to the inner wall of the accommodating cavity 17, and the slider 15 is rotatably connected to the outer wall of the rotating shaft 16. The slider 15 is in an inclined state, mainly to fit the shape of the slide groove 14. The elastic member 28 is fixed to the left side of the rotating shaft 16. Since the initial state of the elastic member 28 is arc-shaped, Figure 5In the figure, the elastic member 28 presents a relatively straight shape. This is because the elastic member 28 is squeezed and deformed into a relatively straight state, and then one end of the elastic member 28 is fixedly connected to the inner wall of the accommodating cavity 17, and the other end is fixedly connected to the left outer wall of the rotating shaft 16. Then, the elastic member 28 can use its own rebound performance to always pull the rotating shaft 16 to the left, ensuring that the rotating shaft 16 continues to fit the outer wall of the left side of the slide groove 14, and the air extraction groove 18 is located on the left side of the slide groove 14, thereby ensuring that the outer wall of the slider 15 can continue to fit the entrance of the air extraction groove 18.

Claims

1. A laser detection device, comprising a laser detector body (1) and a laser module (3), wherein the laser detector body (1) is supported on a road surface by a tripod (2), and a pendulum mechanism is connected to the top of the laser module (3), and comprises at least a mounting rod (7) with one end extending to the outside of the laser detector body (1), and a joint (6) sleeved on the mounting rod (7), so that the joint (6) rotates around the outer wall of the mounting rod (7); characterized in that: A cavity is provided inside the mounting rod (7), and the cavity is extended and opened along the axial direction of the mounting rod (7); It also includes a switching mechanism, which is arranged inside the cavity, and the switching mechanism includes: At least one limiting hole (13) is arranged in a cavity at a corresponding position of the joint (6) sleeved on the mounting rod (7); The limiting portion (11) may be partially protruded from the limiting hole (13); The driving component is arranged inside the cavity, and is used for the driving end thereof to squeeze the limiting portion (11) protruding out of the limiting hole (13) and abutting against the side wall of the joint (6).

2. A laser detection device as claimed in claim 1, characterized in that: The drive components include: A limit plate (12) is arranged in a cavity at a corresponding position of the joint (6) sleeved on the mounting rod (7); The moving rod (10) can slide through the limiting plate (12) and move along the extension direction of the cavity. A protrusion (101) is provided on the outer peripheral wall of the moving rod (10). The limiting portion (11) is located in the cavity between the limiting plate (12) and the protrusion (101). When the moving rod (10) moves in the cavity, the protrusion (101) presses the limiting portion (11) to protrude from the limiting hole (13) and abut against the joint (6).

3. A laser detection device as claimed in claim 2, characterized in that: There are a plurality of limiting holes (13), which are arranged at equal intervals around the outer peripheral wall of the mounting rod (7), and a limiting portion (11) is arranged in a cavity corresponding to each limiting hole (13); The protrusion (101) is a spherical structure with a perforation and is fixedly sleeved on the moving rod (10).

4. A laser detection device as claimed in claim 3, characterized in that: The pendulum mechanism also includes, The support rod (4) is inserted into the interior of the joint (6), and the outer wall of the support rod (4) is rotatably connected to the inner wall of the joint (6); Two connecting blocks (5) are installed at a distance from each other on the top of the laser module (3) and sleeved on the support rod (4), and the inner wall of the connecting block (5) is connected to the outer wall of the support rod (4); The plug hole (8) is formed on the joint (6), and the joint (6) is sleeved on the mounting rod (7) through the plug hole (8). There is a gap between the portion where the limiting portion (11) extends to the outside through the limiting hole (13) and the inner wall of the plug hole (8).

5. A laser detection device as claimed in claim 4, characterized in that: Two groups of limiting parts (11) are arranged in the cavity of the installation rod (7), and a gap is formed between the two groups of limiting parts (11). One end of the moving rod (10) away from the rotating rod (9) passes through the two groups of limiting parts (11) and is rotatably connected to the inner wall of the installation rod (7). The outer wall of the limiting part (11) abuts against the outer wall of the moving rod (10), and a plurality of limiting parts (11) are arranged around the periphery of the moving rod (10) at equal intervals.

6. A laser detection device as claimed in claim 5, characterized in that: The laser detector body (1) is provided with a socket (29) for the installation rod (7) to pass through, one end of the installation rod (7) is inserted into the socket (29) and extends to the outside of the laser detector body (1), the inner wall of the socket (29) is against the outer wall of the installation rod (7), the inner wall of the socket (29) is installed with a circle of Velcro, the outer wall of the installation rod (7) located in the socket (29) is installed with a circle of female Velcro, and the child Velcro is adhered to the female Velcro.

7. A laser detection device as claimed in claim 6, characterized in that: The driving assembly also includes a rotating rod (9) slidably connected to the cavity of the mounting rod (7), the outer wall of the rotating rod (9) is provided with a slide groove (14), the bottom end of the slide groove (14) is arranged in a direction away from the joint (6), one end of the rotating rod (9) extends to the outside of the cavity, and the other end is located inside the cavity and connected to one end of the moving rod (10), the inner wall of the cavity is connected to a slider (15), one end of the slider (15) is connected to the inner wall of the cavity, and the other end is located inside the slide groove (14) and slidably connected thereto.

8. A laser detection device as claimed in claim 7, characterized in that: The number of the slide groove (14) and the number of the sliders (15) is two, and there is a gap between the two slide grooves (14) and the two sliders (15). The inner wall of the slide groove (14) is provided with a plurality of air extraction grooves (18) and a plurality of square openings (22). The air extraction grooves (18) and the square openings (22) are alternately arranged at equal intervals along the extension direction of the slide groove (14). One end of the square opening (22) is an inlet end, which is connected to the slide groove (14). An extrusion block (19) is slidably arranged in the square opening (22). One end of the extrusion block (19) is arc-shaped and protrudes from the inlet end of the square opening (22). A mounting block (21) is mounted on the top of the extrusion block (19), a piston (23) is mounted on one end of the mounting block (21) away from the air extraction groove (18), the piston (23) is located inside the air extraction groove (18), and the outer wall of the piston (23) is connected to the inner wall of the air extraction groove (18); A support rod (24) is installed on the inner wall of the square opening (22), and a torsion spring (25) is wound around the outer wall of the support rod (24). The extrusion block (19) is provided with a movable groove (26). The support rod (24) and the torsion spring (25) are both located inside the movable groove (26), and a spacing is left between the support rod (24), the torsion spring (25) and the movable groove (26). The extrusion block (19) is provided with two symmetrical swing grooves (27), and the two swing grooves (27) are both provided with arc surfaces. The arc surfaces of the two swing grooves (27) are both facing the same direction, and the two torsion arms protruding up and down of the torsion spring (25) extend into the two swing grooves (27) respectively.

9. A laser detection device as claimed in claim 8, characterized in that: The rotating rod (9) is provided with a plurality of chambers (20) in communication with the square openings (22), each chamber (20) corresponds to one of the square openings (22), the extrusion block (19) is slidably arranged between the chamber (20) and the square opening (22), and the outer wall of the extrusion block (19) abuts against the inner wall of the chamber (20) and the square opening (22).

10. A laser detection device as claimed in claim 9, characterized in that: One end of the slider (15) is hemispherical, and the other end is arranged to fit the inner wall of the slide groove (14). The outer wall of the slider (15) abuts against the inner wall of the slide groove (14). The mounting rod (7) is provided with two accommodating cavities (17) for accommodating the slider (15). A rotating shaft (16) is installed on the inner wall of the accommodating cavity (17). The slider (15) is rotatably connected to the outer wall of the rotating shaft (16). An elastic member (28) is connected between the inner wall of the accommodating cavity (17) and the outer wall of the slider (15). The initial shape of the elastic member (28) is arc-shaped.

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