A tunnel dust detection device

Abstract

The utility model relates to dust detection technical field, concretely relates to a kind of tunnel dust detection equipment, comprising: base, laser dust detector, adjusting mechanism of the angle of adjusting laser dust detector;Adjusting mechanism includes: double-shaft motor, first gear is fixedly installed on the output shaft of double-shaft motor, first gear is engaged with first straight rack, and double-shaft motor is fixedly installed on moving seat, moving seat is fixedly installed with mounting plate, rotating and passing through rotating shaft on mounting plate, rotating shaft is installed with adjusting piece and rotating piece.The utility model in, when moving along the limit rail by fixed link, make fixed link drive rotating ring move, rotating ring drive sliding ring move, sliding ring drive adjusting rod move, adjusting rod push laser dust detector and occur deflection, and second gear rotates along second straight rack, second gear drive rotating shaft rotate, rotating shaft drive laser dust detector rotate, the angle of adjusting laser dust detector is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of dust detection, in particular to a tunnel dust detection device. Background Art

[0002] Tunnel dust detection is an important environmental monitoring link in tunnel construction and operation, which is mainly used to evaluate dust concentration, protect the health of workers, prevent explosion risks and meet environmental protection requirements. Existing sensor technologies include laser scattering method, electrostatic induction method and light absorption method. Among them, the laser scattering method: laser irradiates dust particles to generate scattered light, and the concentration is inversely calculated through the change of light intensity. This method has fast response and can realize real-time monitoring, which is suitable for dynamic construction environments.

[0003] In the prior art, for example, a tunnel dust detector disclosed in the utility model with the patent publication No. CN222212569U is provided with a detection mechanism. When much dust adheres to the surface of the dust detector, a first motor is started. The first motor drives a gear to rotate counterclockwise through a first rotating shaft. The counterclockwise rotating gear descends under the action of a toothed plate, and a lifting seat descends accordingly. The lifting seat drives the dust detector to descend through a lifting rod and a lifting plate. When the dust detector descends and contacts a cleaning wiper, the first motor stops operating, and a second motor is started. The second motor drives a rotating seat and the cleaning wiper to rotate through a second rotating shaft. The rotating cleaning wiper cleans the dust on the surface of the dust detector. The device can clean the dust adhering to the surface of the dust detector, so as to ensure that the detection accuracy of the dust detector is not affected.

[0004] The detectable range of a single dust detector during detection is small, so it is necessary to arrange multiple dust detectors at different angles, which increases the detection cost.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a tunnel dust detection device that can effectively solve the above technical problems.

[0007] To achieve the purpose of the utility model, the following technical solution is adopted: a tunnel dust detection device, comprising: a base, a laser dust detector, and an adjusting mechanism for adjusting the angle of the laser dust detector; The adjusting mechanism comprises: a dual-shaft motor, a first gear is fixedly installed on an output shaft of the dual-shaft motor, the first gear is meshed with a first straight rack, the dual-shaft motor is fixedly installed on a moving seat, an installation plate is fixedly installed on the moving seat, a rotating shaft rotatably passes through the installation plate, and an adjusting member and a rotating member are installed on the rotating shaft.

[0008] Furthermore, the rotating component includes a second gear fixedly mounted on the rotating shaft, the second gear meshing with a second spur rack.

[0009] Furthermore, the adjusting component includes a sliding ring, on which an adjusting rod is fixedly mounted, the adjusting rod being hinged to a moving block, and the moving block being slidably mounted in a limiting groove.

[0010] Furthermore, a rotating ring is rotatably mounted on the sliding ring, and a fixed rod is fixedly mounted on the rotating ring, with the fixed rod slidably mounted in the limiting track.

[0011] Furthermore, the rotating shaft is hinged to the laser dust detector, and the limiting groove is provided on the laser dust detector.

[0012] Furthermore, the adjustment rod and the deflection direction of the laser dust detector are located in the same plane.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a tunnel dust detection device. When the fixed rod moves along the limiting track, the fixed rod drives the rotating ring to move, the rotating ring drives the sliding ring to move, the sliding ring drives the adjusting rod to move, the adjusting rod pushes the laser dust detector to deflect, and the second gear rotates along the second spur rack. The second gear drives the rotating shaft to rotate, and the rotating shaft drives the laser dust detector to rotate, thereby adjusting the angle of the laser dust detector. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] Figure 1 This is a schematic diagram of the structure of a tunnel dust detection device according to the present invention.

[0016] Figure 2 This is a schematic diagram of the adjustment mechanism in this utility model.

[0017] Figure 3 This is a schematic diagram of one side of the adjustment mechanism in this utility model.

[0018] Figure 4 This is a schematic diagram of the other side of the adjustment mechanism in this utility model.

[0019] Figure 5 This is a schematic diagram of the cleaning mechanism in this utility model.

[0020] Figure 6 This is a schematic diagram of one side of the protective frame in this utility model.

[0021] In the diagram: 1. Base; 2. Frame; 3. Adjustment mechanism; 31. Dual-axis motor; 32. First gear; 33. First spur rack; 34. Moving seat; 35. Mounting plate; 36. Rotating shaft; 37. Second gear; 38. Second spur rack; 39. Rotating ring; 310. Limiting track; 311. Adjusting rod; 312. Moving block; 313. Limiting groove; 314. Sliding ring; 4. Cleaning mechanism; 41. Fixing plate; 42. Protective frame; 421. Cylindrical comb; 43. Push plate; 44. Limiting rod; 45. Spring; 5. Laser dust detector. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 utility model. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism at the same time. When a mechanism is considered to be "set on" another mechanism, it can be directly set on the other mechanism or there may be an intervening mechanism at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0024] like Figures 1 to 5As shown, this utility model discloses a tunnel dust detection device, comprising: a base 1, a laser dust detector 5, an adjustment mechanism 3 for adjusting the angle of the laser dust detector 5, and a cleaning mechanism 4 for cleaning the laser dust detector 5. The base 1 is fixedly installed on one side of the bottom of the tunnel inner wall, and a frame 2 is fixedly installed on the base 1. The adjustment mechanism 3 is installed on the frame 2, and the cleaning mechanism 4 is installed on the base 1. The angle of the laser dust detector 5 is adjusted by the adjustment mechanism 3, and the position of the laser dust detector 5 can be moved to the position of the cleaning mechanism 4 by the adjustment mechanism 3, so that the cleaning mechanism 4 can clean the laser dust detector 5 and avoid dust adhesion affecting the laser emission and signal reception.

[0025] The adjusting mechanism 3 includes a dual-axis motor 31. A first gear 32 is fixedly mounted on the output shaft of the dual-axis motor 31. The first gear 32 meshes with a first straight rack 33. The two first straight racks 33 are fixedly mounted on the frame 2. By starting the dual-axis motor 31, the output shaft of the dual-axis motor 31 drives the first gear 32 to rotate. The first gear 32 moves along the first straight rack 33, enabling the dual-axis motor 31 to move along the direction of the first straight rack 33. The dual-axis motor 31 is fixedly mounted on a movable base 34, which is slidably mounted on the frame 2 and can move. Multiple guide rods are fixed to and pass through the seat 34. The guide rods limit the movement direction of the moving seat 34 and increase the stability of the moving seat 34, so that the first gear 32 can maintain meshing with the first straight rack 33. The moving seat 34 is driven by the dual-axis motor 31, so that the moving seat 34 can move up and down on the frame 2. A mounting plate 35 is fixedly installed on the moving seat 34, and a rotating shaft 36 rotates and passes through the mounting plate 35. One end of the rotating shaft 36 is hinged to the laser dust detector 5, and an adjusting component and a rotating component are installed on the rotating shaft 36.

[0026] The rotating component includes a second gear 37 fixedly mounted on the rotating shaft 36. The second gear 37 is located at one end of the rotating shaft 36 near the movable seat 34, and the second gear 37 meshes with a second spur rack 38. The second spur rack 38 is fixedly mounted on a first bracket, and the first bracket is fixedly mounted on the frame 2. When the movable seat 34 drives the mounting plate 35 to move, the mounting plate 35 drives the rotating shaft 36 to move. The rotating shaft 36 drives the first gear 32 to move along the second spur rack 38. The second gear 37 is driven by the teeth of the second spur rack 38, causing the second gear 37 to drive the rotating shaft 36 to rotate.

[0027] The adjusting component includes a sliding ring 314, which is slidably mounted on the rotating shaft 36. An adjusting rod 311 is fixedly mounted on the sliding ring 314. The adjusting rod 311 is parallel to the rotating shaft 36 and is hinged to a moving block 312. The moving block 312 is slidably mounted in a limiting groove 313, which is located on the outer shell of the laser dust detector 5. By adjusting the distance between the sliding ring 314 and the laser dust detector 5, the sliding ring 314 drives the adjusting rod 311 to move. The adjusting rod 311 drives the moving block 312 to move. The moving block 312 slides in the limiting groove 313, causing the moving block 312 to push the laser dust detector 5 to deflect.

[0028] It should be noted that the adjustment rod 311 and the deflection direction of the laser dust detector 5 are located in the same plane, so that the adjustment rod 311 can push the laser dust detector 5 to deflect through the moving block 312. If the adjustment rod 311 and the deflection direction of the laser dust detector 5 are located in different planes, the adjustment rod 311 will not be able to push the laser dust detector 5 to deflect.

[0029] Furthermore, a rotating ring 39 is rotatably mounted on the sliding ring 314, and a fixed rod is fixedly mounted on the rotating ring 39. The fixed rod is slidably mounted in the limiting rail 310, which is fixedly mounted on the second bracket. The second bracket is fixedly mounted on the frame 2. The moving trajectory of the fixed rod is limited by the limiting rail 310. When the fixed rod moves along the limiting rail 310, the fixed rod drives the rotating ring 39 to move, the rotating ring 39 drives the sliding ring 314 to move, the sliding ring 314 drives the adjusting rod 311 to move, and the adjusting rod 311 pushes the laser dust detector 5 to deflect.

[0030] It should be added that the limiting track 310 consists of two parts: an inclined track and a vertical track. The inclined track enables the fixed rod to drive the rotating ring 39 to move in the horizontal direction, thereby causing the sliding ring 314 to slide on the rotating shaft 36. The vertical track enables the laser dust detector 5 to move to the position of the cleaning mechanism 4.

[0031] The cleaning mechanism 4 includes: a fixed plate 41, which is vertically fixedly mounted on the base 1, and multiple rows of cleaning brushes are fixedly mounted on the fixed plate 41. The cleaning brushes are located inside the protective frame 42, and a fixed rod is fixedly mounted inside the protective frame 42. A cylindrical comb 421 is rotatably mounted on the fixed rod. When the protective frame 42 moves, the cylindrical comb 421 contacts and rotates with the cleaning brushes. The rotation of the cylindrical comb 421 agitates the cleaning brushes, preventing dust from adhering to the cleaning brushes and affecting their cleaning effect. A push plate 43 is fixedly mounted on the top of the protective frame 42. Aligned vertically with mounting plate 35, the lowering of mounting plate 35 pushes protective frame 42, causing protective frame 42 to move away, thus allowing the rotating laser dust detector 5 to be cleaned by the cleaning brush; the bottom of protective frame 42 slides and passes through limit rod 44, limit rod 44 is fixedly installed on base 1, and spring 45 is sleeved on limit rod 44. One end of spring 45 is fixedly connected to base 1, and the other end of spring 45 is fixedly connected to protective frame 42. The elastic force of spring 45 allows protective frame 42, which is pushed by mounting plate 35, to return to its original position.

[0032] Working principle: The movement of the movable seat 34 causes the rotating shaft 36 to be driven and moved by the second gear 37, thereby causing the rotating shaft 36 to rotate the laser dust detector 5. When the fixed rod moves in the inclined track, the sliding ring 314 drives the adjusting rod 311 to move, and the adjusting rod 311 drives the moving block 312 to move, causing the laser dust detector 5 to deflect and complete the angle adjustment of the laser dust detector 5. The laser dust detector 5 can detect the dust content in multiple directions. When the fixed rod moves in the vertical track, the mounting plate 35 can push the protective frame 42 open, allowing the laser dust detector 5 to rotate while contacting the cleaning brush, so that the dust at the laser emission and laser signal reception positions of the laser dust detector 5 is cleaned.

[0033] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A tunnel dust detection apparatus, characterized by, include: Base, laser dust detector, and adjustment mechanism for adjusting the angle of the laser dust detector; The adjustment mechanism includes: a dual-axis motor, on the output shaft of the dual-axis motor a first gear is fixedly mounted, the first gear meshes with a first spur rack, the dual-axis motor is fixedly mounted on a movable base, a mounting plate is fixedly mounted on the movable base, a rotating shaft rotates and passes through the mounting plate, and an adjustment component and a rotating component are mounted on the rotating shaft.

2. A tunnel dust detection apparatus as claimed in claim 1, characterized in that The rotating component includes a second gear fixedly mounted on the rotating shaft, the second gear meshing with a second spur rack.

3. A tunnel dust detection apparatus as claimed in claim 1, characterized in that The adjusting component includes: a sliding ring, on which an adjusting rod is fixedly mounted, the adjusting rod being hinged to a moving block, and the moving block being slidably mounted in a limiting groove.

4. A tunnel dust detection apparatus as claimed in claim 3, wherein A rotating ring is rotatably mounted on the sliding ring, and a fixed rod is fixedly mounted on the rotating ring. The fixed rod is slidably mounted in the limiting track.

5. A tunnel dust detection apparatus as claimed in claim 3, wherein, The rotating shaft is hinged to the laser dust detector, and the limiting groove is provided on the laser dust detector.

6. A tunnel dust detection apparatus as claimed in claim 3, wherein The adjusting rod and the deflection direction of the laser dust detector are located in the same plane.

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