A rangefinder for mechanical and electrical installation

Abstract

The present invention discloses a rangefinder for mechanical and electrical installation, which relates to the field of rangefinder equipment. It includes a housing, on the surface of which a display screen is fixedly connected, a non-slip sleeve is fixedly connected, a lighting lamp is fixedly connected to one side of the housing, and a plurality of control buttons are installed on the surface of the housing. Inside the housing, a power supply battery pack and a control main board are fixedly connected. When the present invention is in use, the sealing baffle rotates, facilitating the emission and reception of laser rays by the laser ranging module, and at the same time facilitating better ventilation and heat dissipation during the operation of the device. When the device is not in use, the sealing baffle can seal the inside of the ventilation holes to prevent water ingress. With the above structure, during distance measurement, it is convenient for the components on the control main board inside the housing to dissipate heat and avoid the space of the laser emitted by the laser ranging module. When distance measurement is not carried out, the overall closure of the housing is achieved, and during the process of carrying and moving, waterproof protection is provided for the laser ranging module installed inside the housing.

Description

Technical Field

[0001] The present invention relates to the field of rangefinder devices, and particularly to a rangefinder for mechanical and electrical installation. Background Art

[0002] A rangefinder refers to a radio navigation device that measures the slant range between an aircraft and a ground transponder. It consists of an airborne interrogator and a ground transponder. It uses the method of measuring the round-trip time required for radio waves to travel from the aircraft to the station to determine the distance between the two.

[0003] The existing patent with the publication number "CN220795460U" and the name of a rangefinder includes a protective box. An A chute is provided on the inner side wall of the protective box, and an A slider is slidably connected inside the A chute. The surface of the A slider is fixedly connected with a rangefinder body. A wearing ring is provided on one side of the bottom of the protective box, and an A connecting band is fixedly installed on one side of the center of the bottom of the protective box, and a B connecting band is fixedly installed on the other side of the center of the bottom of the protective box. For this rangefinder, through the settings of the protective box, A slider and upper cover plate, when using the rangefinder, the laser beam is emitted and passes through the groove to hit the target object, and then the distance is calculated by measuring the time difference of the laser return. After use, the upper cover plate can be covered on the top of the protective box by sliding the upper cover plate, and then the connecting plate can be pushed, and then the placing block can be placed in the through groove, so as to achieve the limiting effect on the upper cover plate;

[0004] The inventor believes that the patent with the patent number "CN220795460U" is convenient for carrying, operating and using, but there are still certain problems. On the one hand, some ranging probes (lidar) will be installed on the surface of the rangefinder to facilitate laser ranging with a handheld device. During daily carrying and use, it is easy for the ranging probe (lidar) to get water and be damaged, lacking effective rain protection for the components (lidar) inside the detection device. On the other hand, when using the rangefinder for frequent ranging, the internal components are not easy to dissipate heat and cool down. Therefore, a rangefinder for mechanical and electrical installation is needed. Summary of the Invention

[0005] The purpose of the present application is to provide a rangefinder for mechanical and electrical installation to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present application provides the following technical solution: A rangefinder for mechanical and electrical installation includes a housing. A display screen is fixedly connected to the surface of the housing, a power supply battery pack and a control main board are fixedly connected to the inner wall of the housing, a laser ranging module is fixedly connected to the surface of the control main board, a through hole is provided on the surface of the housing, and a rain protection and heat dissipation mechanism is slidably connected to the inner wall of the through hole, and the rain protection and heat dissipation mechanism corresponds to the position of the laser ranging module;

[0007] The laser ranging module includes a laser emission end and a laser reception end. The laser emission end is used to emit a laser beam, and the laser reception end is used to receive the laser beam. The main control board records and stores the time required for the lidar ray to travel to and from the laser ranging module and the target to be measured, and calculates the distance between the laser ranging module and the target to be measured;

[0008] Preferably, the rainproof protection and heat dissipation mechanism includes a pressing rod slidably connected to the inner wall of the through hole. A connecting plate is fixedly connected to the lower surface of the pressing rod, and an L-shaped pressing plate is fixedly connected to the surface of the connecting plate. A first spring is fixedly connected to the inner wall of the housing, and a reset plate is fixedly connected to the bottom end of the first spring. A stress plate is fixedly connected to one side of the reset plate, and the upper surface of the stress plate is in contact with the lower surface of the L-shaped pressing plate. A linkage plate is fixedly connected to one side of the reset plate, and a plurality of first rotating cylinders are rotatably connected to the inner wall of the linkage plate;

[0009] A groove is formed in the inner wall of the housing, and a plurality of air exchange holes are formed in one side of the housing. A rotating shaft is rotatably connected to the inner wall of the air exchange hole, and a sealing baffle is fixedly connected to the surface of the rotating shaft. A second rotating cylinder is fixedly connected to the surface of the sealing baffle, and the same connecting plate is fixedly connected to the surfaces of the second rotating cylinder and the first rotating cylinder;

[0010] A sealing and waterproof assembly is formed in the inner wall of the air exchange hole, a signal transmission assembly is fixedly connected to the inner wall of the housing, a guiding and moving assembly is fixedly connected to one side of the linkage plate, and a positioning assembly is rotatably connected to the surface of the pressing rod;

[0011] An anti-slip sleeve is fixedly connected to the surface of the housing, a lighting lamp is fixedly connected to one side of the housing, and a plurality of control buttons are installed on the surface of the housing.

[0012] Preferably, the sealing and waterproof assembly includes a sealing groove formed in the inner wall of the air exchange hole, the inner wall of the sealing groove is adapted to fit with the upper surface of the sealing baffle, an arc groove is formed in the inner wall of the air exchange hole, the inner wall of the arc groove is adapted to fit with the lower surface of the sealing baffle, and a sealing strip is fixedly connected to one side of the sealing baffle close to the first spring; the sealing and waterproof assembly further includes an avoidance hole formed in the surface of the housing, a U-shaped plate is fixedly connected to the inner wall of the avoidance hole, and a sealing block is slidably connected to the inner walls of a pair of U-shaped plates.

[0013] Preferably, the sealing and waterproof assembly further includes a third spring fixedly connected to the inner wall of the U-shaped plate, one end of the third spring is fixedly connected to the surface of the sealing block, and sealing gaskets are fixedly connected to the opposite surfaces of a pair of sealing blocks.

[0014] Preferably, the guiding and moving assembly includes a support column fixedly connected to one side of the linkage plate, the support column is installed at the center position of the linkage plate, a guiding arc groove is formed in the inner wall of the housing, and one end of the support column is installed inside the guiding arc groove.

[0015] Preferably, the signal transmission component includes a support cylinder fixedly connected to the inner wall of the housing. An antenna is slidably connected to the inner wall of the support cylinder. One end of the antenna is fixedly connected to a data line, and one end of the data line is fixedly connected to one side of the laser ranging module.

[0016] Preferably, the signal transmission component further includes a sleeve rotatably connected to the surface of the support column. A slide plate is slidably connected to the inner wall of the sleeve. One side of the slide plate is rotatably connected to the surface of the antenna.

[0017] Preferably, one end of the antenna is provided with a rounded corner. An inclined groove is formed on one side of the sealing block, and the position of the antenna corresponds to that of the inclined groove.

[0018] Preferably, the positioning component includes a semi-circular shaft rotatably connected to the surface of the pressing rod. A mounting fixing plate is fixedly connected to the lower surface of the housing. A guiding plate and a bottom plate are fixedly connected to one side of the mounting fixing plate. A driving plate is mounted on the surface of the semi-circular shaft. A swinging hole is formed on the surface of the driving plate, and the inner wall of the swinging hole is fixedly connected to the surface of the semi-circular shaft. A positioning shaft is fixedly connected to one side of the driving plate.

[0019] Preferably, the upper surface of the guiding plate is provided with an inclined surface, the lower surface of the guiding plate is provided with a card slot position, the upper surface of the bottom plate is provided with a reset groove, a second spring is fixedly connected to the surface of the bottom plate, and the top end of the second spring is fixedly connected to the surface of the semi-circular shaft. The second spring and the semi-circular shaft are not coaxial and there is an axial offset, which is used to drive the overall torsion of the driving plate when the semi-circular shaft descends.

[0020] In summary, the technical effects and advantages of the present invention:

[0021] In the present invention, by providing a guiding arc groove, the movement of the support column is guided and limited, so that the position of the linkage plate moves along the guiding arc groove, and the angle of the linkage plate deflects. The second rotating cylinder is driven to rotate through the connecting plate, and the angle of the sealing baffle is adjusted by rotation. By providing the sealing baffle, when the device does not perform laser ranging, the inside of the air exchange hole is sealed and waterproof. During use, the sealing baffle rotates to make space for avoidance, which is convenient for better receiving and emitting laser rays, and at the same time facilitates better ventilation and heat dissipation of the device during operation. When the device is not in use, the sealing baffle can seal and waterproof the inside of the air exchange hole.

[0022] In the present invention, by providing a sealing groove which is adapted to fit closely with the upper surface of the sealing baffle to achieve better sealing while not hindering the rotation of the sealing baffle, by providing an arc groove for better fitting and sealing, by providing a sealing strip for waterproof sealing operation, by providing a sealing block for sealing the space between a pair of U-shaped plates to prevent rainwater from entering the interior, and by providing a sealing gasket which is mutually extruded for sealing. The advantage of this is that when carrying the device, rainwater will not enter the interior of the housing and cause contamination.

[0023] In the present invention, by providing a sliding plate to adapt to the sliding of the antenna and simultaneously drive the antenna to move together, by providing rounded corners to reduce the contact area with the inner wall of the inclined groove, and then pushing a pair of sealing blocks to move away from each other, so that one end of the antenna extends out, in order to better transmit the detected distance data to the external screen through wireless signals for data imaging.

[0024] In the present invention, by providing a positioning shaft which is clamped and positioned with the card slot to keep the position of the pressing rod stable, by providing an inclined surface to guide the movement of the positioning shaft, by providing a second spring to facilitate the reset of the overall height movement of the pressing rod, and by providing a reset groove, when the pressing rod is pressed again, the positioning shaft on the driving plate can be rotated to the position of the reset groove, and then under the action of the second spring, it can be disengaged from the position of the card slot. The advantage of this is that the operation is convenient and it is convenient for the next lidar ranging operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present application;

[0027] Figure 2 is a cross-sectional structural schematic diagram of the housing in an embodiment of the present application;

[0028] Figure 3 is a cross-sectional structural schematic diagram of the pressing rod in an embodiment of the present application;

[0029] Figure 4 is a planar structural schematic diagram of the guide plate and the bottom plate in an embodiment of the present application;

[0030] Figure 5 is a three-dimensional structural schematic diagram of the linkage plate in an embodiment of the present application;

[0031] Figure 6Schematic plan view of the guiding arc groove in the embodiment of the present application;

[0032] Figure 7 Schematic three-dimensional structure view of the antenna in the embodiment of the present application;

[0033] Figure 8 Schematic cross-sectional structure view of the U-shaped plate in the embodiment of the present application.

[0034] In the figure: 1. Housing; 2. Display screen; 3. Lighting lamp; 4. Control button; 5. Anti-slip sleeve; 6. Power supply battery pack; 7. Rainproof protection and heat dissipation mechanism; 701. Pressing rod; 702. Installation fixing plate; 703. Avoidance hole; 704. Semi-circular shaft; 705. Driving plate; 706. Positioning shaft; 707. Guide plate; 708. Bottom plate; 709. Second spring; 710. Card slot position; 711. Data line; 712. Support cylinder; 713. Antenna; 714. L-shaped pressing plate; 715. Reset plate; 716. Stress plate; 717. Sealing baffle; 718. Second rotating cylinder; 719. Connecting plate; 720. First rotating cylinder; 721. Linking plate; 722. First spring; 723. Groove; 724. Rotating shaft; 725. Sealing strip; 726. Arc groove; 727. Sleeve; 728. U-shaped plate; 729. Sealing block; 730. Sealing gasket; 731. Third spring; 732. Inclined groove; 733. Rounding; 734. Reset groove; 735. Swing hole; 736. Ventilation hole; 737. Connecting disk; 738. Slide plate; 739. Guiding arc groove; 740. Support column; 741. Sealing groove; 742. Inclined surface; 8. Control main board; 9. Laser ranging module. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment: Refer to Figures 1 - 8 A ranging instrument for mechanical and electrical installation shown, including a housing 1, a display screen 2 is fixedly connected to the surface of the housing 1, a power supply battery pack 6 and a control main board 8 are fixedly connected to the inner wall of the housing 1, a laser ranging module 9 is fixedly connected to the surface of the control main board 8, a through hole is opened on the surface of the housing 1, and a rainproof protection and heat dissipation mechanism 7 is slidably connected to the inner wall of the through hole, and the rainproof protection and heat dissipation mechanism 7 corresponds to the position of the laser ranging module 9;

[0037] The laser ranging module 9 includes a laser emitting end and a laser receiving end. The laser emitting end is used to emit a laser beam, and the laser receiving end is used to receive the laser beam. By controlling the main board 8 to record and store the time required for the lidar ray to travel to and from the laser ranging module 9 and the measured target, the distance between the laser ranging module 9 and the measured target is calculated.

[0038] The rainproof protection and heat dissipation mechanism 7 includes a pressing rod 701 slidably connected to the inner wall of the through hole. A connecting disk 737 is fixedly connected to the lower surface of the pressing rod 701. An L-shaped pressing plate 714 is fixedly connected to the surface of the connecting disk 737. A first spring 722 is fixedly connected to the inner wall of the housing 1. The bottom end of the first spring 722 is fixedly connected to a reset plate 715. A stress plate 716 is fixedly connected to one side of the reset plate 715. The upper surface of the stress plate 716 is in contact with the lower surface of the L-shaped pressing plate 714. A linkage plate 721 is fixedly connected to one side of the reset plate 715. A plurality of first rotating cylinders 720 are rotatably connected to the inner wall of the linkage plate 721;

[0039] A groove 723 is formed in the inner wall of the housing 1. A plurality of air exchange holes 736 are formed in one side of the housing 1. A rotating shaft 724 is rotatably connected to the inner wall of the air exchange hole 736. A sealing baffle 717 is fixedly connected to the surface of the rotating shaft 724. A second rotating cylinder 718 is fixedly connected to the surface of the sealing baffle 717. The same connecting plate 719 is fixedly connected to the surfaces of the second rotating cylinder 718 and the first rotating cylinder 720;

[0040] A sealing and waterproof assembly is provided in the inner wall of the air exchange hole 736. A signal transmission assembly is fixedly connected to the inner wall of the housing 1. A guiding and moving assembly is fixedly connected to one side of the linkage plate 721. A positioning assembly is rotatably connected to the surface of the pressing rod 701;

[0041] An anti-slip sleeve 5 is fixedly connected to the surface of the housing 1. A lighting lamp 3 is fixedly connected to one side of the housing 1. A plurality of control buttons 4 are installed on the surface of the housing 1.

[0042] With the above structure, by setting the anti-slip sleeve 5, it is possible to prevent slipping when using the housing 1. By setting the power supply battery pack 6, the control main board 8 can be powered. By setting the laser ranging module 9, when detecting, the laser ranging module 9 emits lidar rays. After being reflected by the target to be measured, the laser ranging module 9 receives them, measures the time required for the lidar rays to reciprocate, and the distance between objects can be obtained. By setting the pressing rod 701, the operator can press the pressing rod 701. Through the connection of the connecting plate 737, the L-shaped pressing plate 714 is driven to descend. By setting the first spring 722, the overall support of the reset plate 715 is realized. By setting the force-bearing plate 716, when the force-bearing plate 716 receives the pressure from the L-shaped pressing plate 714, the overall reset plate 715 is driven to descend, thereby changing the height of the linkage plate 721. By setting the same connecting plate 719, when the position of the linkage plate 721 moves, through the connection of the first rotating cylinder 720, the connecting plate 719 is driven to make the second rotating cylinder 718 rotate. By setting the sealing baffle 717, when the device is not in use, the inside of the air exchange hole 736 is sealed and waterproofed. When in use, the sealing baffle 717 rotates to facilitate better reception and emission of laser rays.

[0043] As a preferred implementation manner in this embodiment, the sealing and waterproofing assembly includes a sealing groove 741 opened on the inner wall of the air exchange hole 736. The inner wall of the sealing groove 741 is adapted to fit closely with the upper surface of the sealing baffle 717. An arc-shaped groove 726 is opened on the inner wall of the air exchange hole 736. The inner wall of the arc-shaped groove 726 is adapted to fit closely with the lower surface of the sealing baffle 717. A sealing strip 725 is fixedly connected to one side of the sealing baffle 717 close to the first spring 722.

[0044] By setting the sealing groove 741 to be adapted to fit closely with the upper surface of the sealing baffle 717, better sealing can be achieved while not hindering the rotation of the sealing baffle 717. By setting the arc-shaped groove 726, better fitting and sealing can be achieved. By setting the sealing strip 725, waterproof sealing operations can be carried out.

[0045] The sealing and waterproofing assembly further includes an avoidance hole 703 opened on the surface of the housing 1. A U-shaped plate 728 is fixedly connected to the inner wall of the avoidance hole 703. Sealing blocks 729 are slidably connected to the inner walls of a pair of U-shaped plates 728.

[0046] By setting the avoidance hole 703, space is provided for the installation and avoidance of the U-shaped plate 728. By setting the sealing blocks 729, the space between a pair of U-shaped plates 728 is blocked and sealed to prevent rainwater from entering the interior.

[0047] In this embodiment, the sealing and waterproofing assembly further includes a third spring 731 fixedly connected to the inner wall of the U-shaped plate 728. One end of the third spring 731 is fixedly connected to the surface of the sealing block 729. Sealing gaskets 730 are fixedly connected to the opposite surfaces of a pair of sealing blocks 729.

[0048] By setting the third spring 731, a pair of sealing blocks 729 are driven to approach each other for sealing. By setting the sealing gasket 730, they are squeezed against each other for sealing.

[0049] As a preferred implementation in this embodiment, the guiding and moving assembly includes a support column 740 fixedly connected to one side of the linkage plate 721. The support column 740 is installed at the central position of the linkage plate 721. A guiding arc groove 739 is formed on the inner wall of the housing 1, and one end of the support column 740 is installed inside the guiding arc groove 739.

[0050] By setting the support column 740, the positioning of the linkage plate 721 is maintained. When the linkage plate 721 moves driven by the reset plate 715, the linkage plate 721 drives the support column 740 to move along the inner wall of the guiding arc groove 739. By setting the guiding arc groove 739, the movement of the support column 740 is guided and limited.

[0051] In this embodiment, the signal transmission assembly includes a support cylinder 712 fixedly connected to the inner wall of the housing 1. An antenna 713 is slidably connected to the inner wall of the support cylinder 712. One end of the antenna 713 is fixedly connected to a data line 711, and one end of the data line 711 is fixedly connected to one side of the laser ranging module 9.

[0052] By setting the support cylinder 712, stable support for the antenna 713 is achieved. By setting the antenna 713, the antenna 713 is an electromagnetic wave component for transmitting and receiving by a radio device, so as to better transmit the detected distance data to the external screen through a wireless signal for data imaging.

[0053] In this embodiment, the signal transmission assembly further includes a sleeve 727 rotatably connected to the surface of the support column 740. A sliding plate 738 is slidably connected to the inner wall of the sleeve 727. One side of the sliding plate 738 is rotatably connected to the surface of the antenna 713.

[0054] By setting the sleeve 727, it is convenient to adjust the position of the sliding plate 738 by contraction when the sleeve 727 rotates. By setting the sliding plate 738, it adapts to the sliding of the antenna 713 and drives the antenna 713 to move together at the same time.

[0055] In this embodiment, one end of the antenna 713 is provided with a rounded corner 733, and an inclined groove 732 is formed on one side of the sealing block 729. The position of the antenna 713 corresponds to that of the inclined groove 732.

[0056] By setting the rounded corner 733, the contact area with the inner wall of the inclined groove 732 is reduced, thereby pushing a pair of sealing blocks 729 in the direction of moving away from each other.

[0057] As a preferred implementation manner in this embodiment, the positioning component includes a semi-circular shaft 704 rotatably connected to the surface of the pressing rod 701. A mounting fixing plate 702 is fixedly connected to the lower surface of the housing 1. A guide plate 707 and a bottom plate 708 are fixedly connected to one side of the mounting fixing plate 702. A driving plate 705 is mounted on the surface of the semi-circular shaft 704. A swing hole 735 is formed in the surface of the driving plate 705. The inner wall of the swing hole 735 is fixedly connected to the surface of the semi-circular shaft 704. A positioning shaft 706 is fixedly connected to one side of the driving plate 705.

[0058] By providing the semi-circular shaft 704, the connected driving plate 705 can be driven to rotate together by the second spring 709. By providing the positioning shaft 706, it is engaged and positioned with the card slot 710 to keep the position of the pressing rod 701 stable.

[0059] In this embodiment, the upper surface of the guide plate 707 is provided as an inclined surface 742, the lower surface of the guide plate 707 is provided as a card slot 710, the upper surface of the bottom plate 708 is provided as a reset groove 734. A second spring 709 is fixedly connected to the surface of the bottom plate 708. The top end of the second spring 709 is fixedly connected to the surface of the semi-circular shaft 704. The second spring 709 and the semi-circular shaft 704 are not coaxial and there is an axis offset, which is used for the semi-circular shaft 704 to descend and drive the whole driving plate 705 to generate torsion.

[0060] By providing the inclined surface 742, the movement of the positioning shaft 706 is guided. By providing the second spring 709, it is convenient to drive the whole pressing rod 701 to move back to its original position. By providing the reset groove 734, when the pressing rod 701 is pressed again, the positioning shaft 706 on the driving plate 705 can be rotated to the position of the reset groove 734, and then under the action of the second spring 709, it can be disengaged from the position of the card slot 710.

[0061] The working principle of the present invention is:

[0062] During use, the lidar ray is emitted by the lidar ranging module 9. After being reflected by the target to be measured, it is received by the lidar ranging module 9 to measure the time required for the round-trip of the lidar ray, and the distance between objects is obtained. Before use, the pressing rod 701 can be pressed. The pressing rod 701 descends through the connecting disc 737 to drive the L-shaped pressing plate 714 to descend. When the pressing rod 701 descends, it drives the semi-circular shaft 704 and the driving plate 705 to descend as a whole. The second spring 709 is not coaxial with the semi-circular shaft 704, and there is an axial offset, which is used to drive the driving plate 705 to twist as a whole when the semi-circular shaft 704 descends, so that the positioning shaft 706 drives the semi-circular shaft 704 to rotate on the surface of the pressing rod 701 under the action of the inclined surface 742, and then the positioning shaft 706 is clamped in the card slot 710 to maintain stability. During the descent of the L-shaped pressing plate 714, when the force-bearing plate 716 receives the pressure from the L-shaped pressing plate 714, it drives the reset plate 715 to descend as a whole, thereby changing the height of the linkage plate 721. At this time, the first spring 722 is stretched and deformed. When the position of the linkage plate 721 moves, through the connection of the first rotating cylinder 720, it drives the connecting plate 719 to make the second rotating cylinder 718 rotate. The rotation of the second rotating cylinder 718 drives the sealing baffle 717 to rotate, opening the air exchange hole 736 for space avoidance, facilitating the lidar ranging module 9 to emit and receive lidar rays, and at the same time, during the operation of the device, better ventilation and heat dissipation;

[0063] When the device is not in use, the sealing baffle 717 can seal and waterproof the inside of the air exchange hole 736. The movement of the linkage plate 721 drives the support column 740 to descend in the guiding arc groove 739. At this time, it drives the connected sleeve 727 to move in the direction close to the sealing baffle 717. Since the reset plate 715 is tilted under force from its original horizontal state, it drives the linkage plate 721 and the connected support column 740 to rotate and tilt as a whole. The antenna 713 is pulled by the sliding plate 738 in the direction close to the sealing block 729. At this time, the sliding plate 738 can slide in the sleeve 727 to adapt to the adjustment. After the rounded corner 733 on the antenna 713 contacts the inner wall of the inclined groove 732, it pushes a pair of sealing blocks 729 to move away from each other, so that one end of the antenna 713 extends out to better transmit the measured distance data to the external screen through wireless signals for data imaging. The detection results will be synchronously presented on the display screen 2. When the device needs to close the air exchange hole 736 without lidar ranging, the pressing rod 701 is pressed again, driving the positioning shaft 706 located in the card slot 710 to move into the reset groove 734, and under the action of the second spring 709, it resets from the position of the card slot 710, facilitating the next use operation. With the above structure, during ranging use, it is convenient for the components on the control main board 8 in the housing 1 to dissipate heat and make space avoidance for the laser emitted by the lidar ranging module 9. When not ranging, the whole housing 1 is closed, and during the process of carrying and moving, the lidar ranging module 9 installed inside the housing 1 is waterproof protected.

[0064] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rangefinder for mechanical and electrical installation, comprising a housing, characterized in that: A display screen is fixedly connected to the surface of the housing. A power supply battery pack and a control main board are fixedly connected to the inner wall of the housing. A laser ranging module is fixedly connected to the surface of the control main board. A through hole is opened on the surface of the housing, and a rainproof protection and heat dissipation mechanism is slidably connected to the inner wall of the through hole. The rainproof protection and heat dissipation mechanism corresponds to the position of the laser ranging module; The laser ranging module includes a laser emitting end and a laser receiving end. The laser emitting end is used to emit a laser beam, and the laser receiving end is used to receive the laser beam. The control main board records and stores the time required for the lidar ray to travel back and forth between the laser ranging module and the measured target, and calculates the distance between the laser ranging module and the measured target; The rainproof protection and heat dissipation mechanism includes a pressing rod slidably connected to the inner wall of the through hole. A connecting disc is fixedly connected to the lower surface of the pressing rod. An L-shaped pressing plate is fixedly connected to the surface of the connecting disc. A first spring is fixedly connected to the inner wall of the housing. The bottom end of the first spring is fixedly connected to a reset plate. A force receiving plate is fixedly connected to one side of the reset plate. The upper surface of the force receiving plate fits with the lower surface of the L-shaped pressing plate. A linkage plate is fixedly connected to one side of the reset plate. A plurality of first rotating cylinders are rotatably connected to the inner wall of the linkage plate; A groove is opened on the inner wall of the housing. A plurality of ventilation holes are opened on one side of the housing. A rotating shaft is rotatably connected to the inner wall of the ventilation hole. A sealing baffle is fixedly connected to the surface of the rotating shaft. A second rotating cylinder is fixedly connected to the surface of the sealing baffle. The second rotating cylinder and the surface of the first rotating cylinder are fixedly connected with the same connecting plate; A sealing and waterproof component is opened on the inner wall of the ventilation hole. A signal transmission component is fixedly connected to the inner wall of the housing. A guiding and moving component is fixedly connected to one side of the linkage plate. A positioning component is rotatably connected to the surface of the pressing rod; An anti-slip sleeve is fixedly connected to the surface of the housing. A lighting lamp is fixedly connected to one side of the housing. A plurality of control buttons are installed on the surface of the housing; The guiding and moving component includes a support column fixedly connected to one side of the linkage plate. The support column is installed at the central position of the linkage plate. A guiding arc groove is opened on the inner wall of the housing. One end of the support column is installed inside the guiding arc groove; The signal transmission component includes a support cylinder fixedly connected to the inner wall of the housing. An antenna is slidably connected to the inner wall of the support cylinder. A data cable is fixedly connected to one end of the antenna. One end of the data cable is fixedly connected to one side of the laser ranging module; The signal transmission component further includes a sleeve rotatably connected to the surface of the support column. A sliding plate is slidably connected to the inner wall of the sleeve. One side of the sliding plate is rotatably connected to the surface of the antenna.

2. The rangefinder for mechanical and electrical installation according to claim 1, characterized in that: The sealing and waterproof component includes a sealing groove opened on the inner wall of the ventilation hole. The inner wall of the sealing groove fits with the upper surface of the sealing baffle. An arc groove is opened on the inner wall of the ventilation hole. The inner wall of the arc groove fits with the lower surface of the sealing baffle. A sealing strip is fixedly connected to one side of the sealing baffle close to the first spring; The sealing and waterproof component further includes an avoidance hole opened on the surface of the housing. A U-shaped plate is fixedly connected to the inner wall of the avoidance hole, and a sealing block is slidably connected to the inner walls of a pair of the U-shaped plates.

3. The rangefinder for mechanical and electrical installation according to claim 2, characterized in that: The sealing and waterproof component further includes a third spring fixedly connected to the inner wall of the U-shaped plate. One end of the third spring is fixedly connected to the surface of the sealing block, and sealing gaskets are fixedly connected to the opposite surfaces of a pair of the sealing blocks.

4. The rangefinder for mechanical and electrical installation according to claim 3, characterized in that: One end of the antenna is set to be rounded. An inclined groove is opened on one side of the sealing block, and the position of the antenna corresponds to that of the inclined groove.

5. The rangefinder for mechanical and electrical installation according to claim 4, wherein: The positioning component includes a semi-circular shaft rotatably connected to the surface of the pressing rod. A mounting fixing plate is fixedly connected to the lower surface of the housing. A guiding plate and a bottom plate are fixedly connected to one side of the mounting fixing plate. A driving plate is mounted on the surface of the semi-circular shaft. A swinging hole is opened on the surface of the driving plate, and the inner wall of the swinging hole is fixedly connected to the surface of the semi-circular shaft. A positioning shaft is fixedly connected to one side of the driving plate.

6. The rangefinder for mechanical and electrical installation according to claim 5, characterized in that: The upper surface of the guiding plate is set to be an inclined surface, and the lower surface of the guiding plate is set to be a card slot position. The upper surface of the bottom plate is set to be a reset groove. A second spring is fixedly connected to the surface of the bottom plate. The top end of the second spring is fixedly connected to the surface of the semi-circular shaft. The second spring and the semi-circular shaft are not coaxial and there is an offset in the axis, which is used to drive the overall torsion of the driving plate when the semi-circular shaft descends.

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