Occupational health exhaust hood detection device

Abstract

The invention discloses an occupational health exhaust hood detection device. The device comprises a moving structure, a lifting mechanism, an identifying and positioning mechanism, a detecting mechanism and a controller, the lifting mechanism is mounted at the upper end of the moving structure; the identifying and positioning mechanism is arranged at the upper end of the lifting mechanism; the detection mechanism is mounted on the identification positioning mechanism; and the controller is electrically or wirelessly connected with electric control devices in the moving structure, the lifting mechanism, the identifying and positioning mechanism and the detecting mechanism. Compared with the prior art, the occupational health exhaust hood detection device has the advantages of being compact in structural design, convenient to operate, high in detection precision, good in safety, capable of effectively improving the efficiency and the accuracy of exhaust hood performance detection and reducing the safety risk of manual detection, and extremely high in cost performance, and therefore the occupational health exhaust hood detection device has a great application prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of occupational health detection devices, and particularly relates to an occupational health exhaust hood detection device. Background Art

[0002] The local exhaust device is one of the most effective methods for controlling the diffusion of harmful substances and eliminating the harm of harmful substances in current industrial production. The exhaust hood is an important device of the local ventilation system, which is used to capture harmful substances such as dust and harmful gases, so that the harmful substances will not spread to the working places of the operators. Therefore, the performance of the exhaust hood will directly affect the diffusion of harmful substances in the workplace. Therefore, during the detection and evaluation of occupational disease hazard factors, the performance detection of the exhaust hood is related to whether the harmful substances in the air of the workplace can be quickly discharged, and the purpose is to reduce the harm to the operators. The existing performance detection of occupational health exhaust hoods mainly relies on manual wire pulling, point selection and handheld detection, which are prone to problems such as low efficiency, inability to accurately obtain measurement points, and inaccurate measurement results. In addition, for large workshops or due to the requirements of the production process, the installation position of the exhaust hood is relatively high from the ground or the hood opening is inclined. Manual detection not only poses safety risks, but also affects the accuracy of the detection results. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide an occupational health exhaust hood detection device.

[0004] In order to achieve the above purpose, the occupational health exhaust hood detection device provided by the present invention includes a moving structure, a lifting mechanism, an identification and positioning mechanism, a detection mechanism and a controller; the lifting mechanism is installed at the upper end of the moving structure; the identification and positioning mechanism is arranged at the upper end of the lifting mechanism; the detection mechanism is installed on the identification and positioning mechanism; the controller is electrically connected or wirelessly connected to the electric control devices in the moving structure, the lifting mechanism, the identification and positioning mechanism and the detection mechanism respectively.

[0005] The moving structure includes a chassis, electric driving wheels, universal wheels and a vehicle frame; the vehicle frame is installed on the chassis; two groups of electric driving wheels are respectively installed in the middle of both sides of the chassis; a group of universal wheels are respectively installed at the four corners of the chassis.

[0006] The lifting mechanism includes a base, a driven bevel gear, a connecting rod, a special-shaped gear, a linkage gear disc, a driving bevel gear, a motor, and a scissor lift platform; wherein, the base includes a bottom plate and multiple support columns; the bottom plate is circular, horizontally arranged, and its bottom surface is fixed on the top surface of the vehicle frame; the lower ends of the multiple support columns are fixedly spaced at the edge of the top surface of the bottom plate, and a vertical opening is formed in the middle of the upper end of each support column along the radial direction of the bottom plate; the motor is installed on one side of the bottom plate, and the output shaft horizontally extends into the interior of the base and its outer end is connected to the central shaft of the driving bevel gear; the linkage gear disc is horizontally arranged in the upper interior of the base, and a parametrically designed track groove is provided on its top surface; the driven bevel gear is vertically meshed with the driving bevel gear, and the upper end of the central shaft of the driven bevel gear is connected to the middle of the bottom surface of the linkage gear disc; the outer ends of each connecting rod and a special-shaped gear are coaxially installed in the vertical opening at the upper end of a support column, and the teeth on the special-shaped gear are meshed with the track groove on the linkage gear disc; multiple linkage rods at the lowermost side of the scissor lift platform are respectively hinged to the inner ends of the multiple connecting rods.

[0007] The identification and positioning mechanism includes an XY-axis movement mechanism and a five-axis cradle turntable; wherein, the five-axis cradle turntable includes a cradle swing arm, an A-axis rotation assembly, a C-axis rotation assembly, a tailstock support assembly, and a fixing plate; the fixing plate is horizontally arranged, and its bottom surface is fixed on the top of the scissor lift platform; the lower ends of the A-axis rotation assembly and the tailstock support assembly are respectively fixed at both ends of the fixing plate; wherein the A-axis rotation assembly includes an A-axis driving motor, an A-axis worm gear, and an A-axis worm; the output end of the A-axis driving motor is connected to one end of the horizontally arranged A-axis worm; the A-axis worm gear is vertically arranged and meshed with the A-axis worm; the cradle swing arm is a cuboid-shaped structure with an open upper end, and both ends are respectively connected to the central shaft of the A-axis worm gear and the support shaft of the tailstock support assembly. Driven by the A-axis driving motor, the cradle swing arm can swing 120° in the clockwise or counterclockwise direction and lock at any angle; the C-axis rotation assembly is fixed in the middle of the cradle swing arm 8, and includes a C-axis driving motor, a C-axis worm gear, and a C-axis worm; the output end of the C-axis driving motor is connected to one end of the horizontally arranged C-axis worm; the C-axis worm gear is horizontally arranged and meshed with the C-axis worm, and a support bearing is provided at the upper end of the central shaft of the C-axis worm gear.

[0008] The XY-axis motion mechanism includes an X-axis motion mechanism and a Y-axis motion mechanism; among them, the Y-axis motion mechanism includes a Y-axis slider, a Y-axis lead screw, a Y-axis guide rail frame, a Y-axis motor, an L-shaped fixing frame, and a Y-axis guide rail; the bottom surface of the horizontal plate of the L-shaped fixing frame is fixed on the end surface of the support bearing of the C-axis rotation assembly, and a Y-axis guide rail frame is respectively arranged at the inner and outer ends on both sides of the top surface of the horizontal plate. Driven by the C-axis drive motor, the XY-axis motion mechanism and the detection mechanism thereon can rotate 360 degrees in the plane and lock at any angle; the two ends of the Y-axis guide rail are respectively fixed on two Y-axis guide rail frames on the same side; two Y-axis motors are respectively installed at the upper parts of the inner sides of the vertical plates of the L-shaped fixing frame, and the output shafts are respectively connected to one end of a Y-axis lead screw, and the two Y-axis lead screws are respectively arranged in parallel above the two Y-axis guide rails; the other end of the Y-axis lead screw is supported by a lead screw seat installed on the Y-axis guide rail frame at the outer end; a Y-axis slider is installed on each Y-axis lead screw, and at the same time, the middle part of the Y-axis guide rail penetrates through the lower part of the Y-axis slider;

[0009] The X-axis motion mechanism includes an X-axis motor, a driving synchronous pulley, an X-axis guide rail, a driven synchronous pulley, an X-axis slider, a synchronous belt, and an X-axis guide rail frame; at least one X-axis guide rail frame is installed on the top surface of each Y-axis slider; the X-axis motor is installed on the outer side surface of a Y-axis slider, and the output shaft extends upward and is connected to the lower end of the central axis of the driving synchronous pulley; the driven synchronous pulley is installed on the top surface of another Y-axis slider; the synchronous belt is sleeved on the driving synchronous pulley and the driven synchronous pulley at the same time; the two ends of the X-axis guide rail are respectively installed on two X-axis guide rail frames, and the middle part penetrates through the X-axis slider, and at the same time, one side of the middle part of the synchronous belt is fixed on the X-axis slider.

[0010] The detection mechanism includes a detection platform and a detection probe; the bottom surface of the detection platform is fixed on the top surface of the X-axis slider; the detection probe is vertically arranged, and the lower end is fixed on the detection platform.

[0011] The controller uses a computer or a mobile phone, and is electrically connected or wirelessly connected to the electric driving wheels, motors, X-axis motor, Y-axis motor, detection probe, A-axis drive motor, and C-axis drive motor respectively.

[0012] The occupational health exhaust hood detection device provided by the present invention has the following beneficial effects: compact structure design, convenient operation, high detection accuracy, good safety, can effectively improve the efficiency and accuracy of exhaust hood performance detection, reduce the safety risks of manual detection, has extremely high cost performance, and therefore has great application prospects. Description of the Drawings

[0013] Figure 1 Is a three-dimensional structure diagram of the occupational health exhaust hood detection device provided by the present invention

[0014] Figure 2Stereoscopic diagram of the identification and positioning mechanism and the detection mechanism in the occupational health exhaust hood detection device provided by the present invention.

[0015] Figure 3 Stereoscopic diagram of the partial structure of the lifting mechanism in the occupational exhaust hood detection device provided by the present invention.

[0016] Figure 4 Schematic diagram of the five-axis cradle turntable structure in the occupational health exhaust hood detection device provided by the present invention. Detailed implementation manners

[0017] The following will describe in detail the occupational health exhaust hood detection device provided by the present invention with reference to the accompanying drawings and specific embodiments.

[0018] As Figures 1 to 4 shown, the occupational health exhaust hood detection device provided by the present invention includes a moving structure, a lifting mechanism, an identification and positioning mechanism, a detection mechanism, and a controller; the lifting mechanism is installed at the upper end of the moving structure; the identification and positioning mechanism is arranged at the upper end of the lifting mechanism; the detection mechanism is installed on the identification and positioning mechanism; the controller is electrically connected or wirelessly connected to the electric control devices in the moving structure, the lifting mechanism, the identification and positioning mechanism, and the detection mechanism respectively.

[0019] The moving structure includes a chassis 1, electric driving wheels 2, universal wheels 3, and a vehicle frame 4; the vehicle frame 4 is installed on the chassis 1; two groups of electric driving wheels 2 are respectively installed in the middle of both sides of the chassis 1 for driving the device to move; a group of universal wheels 3 are respectively installed at the four corners of the chassis 1 for assisting the device to turn.

[0020] The lifting mechanism includes a base 5, a driven bevel gear 6, a connecting rod 7, a special-shaped gear 13, a linkage gear disk 14, a driving bevel gear 15, a motor 16, and a scissors lift platform 33; wherein, the base 5 includes a bottom plate and multiple support columns; the bottom plate is circular, horizontally arranged, and the bottom surface is fixed on the top surface of the vehicle frame 4; the lower ends of the multiple support columns are fixedly spaced at the edge of the top surface of the bottom plate, and a vertical opening is formed in the middle of the upper end of each support column along the radial direction of the bottom plate; the motor 16 is installed on one side of the bottom plate, and the output shaft horizontally extends into the interior of the base 5 and the outer end is connected to the central axis of the driving bevel gear 15; the linkage gear disk 14 is horizontally arranged in the upper inner part of the base 5, and a parametrically designed track groove is provided on the top surface; the driven bevel gear 6 is vertically meshed with the driving bevel gear 15, and the upper end of the central axis of the driven bevel gear 6 is connected to the middle of the bottom surface of the linkage gear disk 14; the outer ends of each connecting rod 7 and a special-shaped gear 13 are coaxially installed in the vertical opening at the upper end of a support column, and the teeth on the special-shaped gear 13 are meshed with the track groove on the linkage gear disk 14; the multiple linkage rods 12 at the lowermost side on the scissors lift platform 33 are respectively hinged to the inner ends of the multiple connecting rods 7.

[0021] The recognition and positioning mechanism includes an XY-axis motion mechanism and a five-axis cradle turntable; among them, the five-axis cradle turntable includes an A-axis rotation assembly 9, a cradle swing arm 8, a C-axis rotation assembly 10, a tailstock support assembly 11, and a fixed plate 34; the fixed plate 34 is horizontally arranged, and the bottom surface is fixed on the top of the scissors lift platform 33; the lower ends of the A-axis rotation assembly 9 and the tailstock support assembly 11 are respectively fixed at both ends of the fixed plate 34; the A-axis rotation assembly 9 includes an A-axis drive motor, an A-axis worm gear, and an A-axis worm; the output end of the A-axis drive motor is connected to one end of the horizontally arranged A-axis worm; the A-axis worm gear is vertically arranged and meshes with the A-axis worm; the cradle swing arm 8 is a cuboid structure with an open upper end, and both ends are respectively connected to the central axis of the A-axis worm gear and the support shaft of the tailstock support assembly 11. Driven by the A-axis drive motor, the cradle swing arm 8 can swing 120° in the clockwise or counterclockwise direction and lock at any angle; the C-axis rotation assembly 10 is fixed in the middle of the cradle swing arm 8 and includes a C-axis drive motor, a C-axis worm gear, and a C-axis worm; the output end of the C-axis drive motor is connected to one end of the horizontally arranged C-axis worm; the C-axis worm gear is horizontally arranged and meshes with the C-axis worm, and a support bearing is provided at the upper end of the central axis of the C-axis worm gear.

[0022] The XY-axis motion mechanism includes an X-axis motion mechanism and a Y-axis motion mechanism; the Y-axis motion mechanism includes a Y-axis slider 17, a Y-axis lead screw 20, a Y-axis guide rail frame 21, a Y-axis motor 23, an L-shaped fixed frame 29, and a Y-axis guide rail 32; the bottom surface of the horizontal plate of the L-shaped fixed frame 29 is fixed on the end surface of the support bearing of the C-axis rotation assembly 10, and a Y-axis guide rail frame 21 is respectively arranged at the inner and outer ends on both sides of the top surface of the horizontal plate. Driven by the C-axis drive motor, the XY-axis motion mechanism and the detection mechanism thereon can rotate 360 degrees in the plane and lock at any angle; both ends of the Y-axis guide rail 32 are respectively fixed on two Y-axis guide rail frames 21 on the same side; two Y-axis motors 23 are respectively installed at the upper parts of both ends of the inner side surface of the vertical plate of the L-shaped fixed frame 29, and the output shafts are respectively connected to one end of a Y-axis lead screw 20, and the two Y-axis lead screws 20 are respectively arranged in parallel above the two Y-axis guide rails 32; the other end of the Y-axis lead screw 20 is supported by a lead screw seat installed on the Y-axis guide rail frame 21 at the outer end; a Y-axis slider 17 is installed on each Y-axis lead screw 20, and the middle part of the Y-axis guide rail 32 penetrates through the lower part of the Y-axis slider 17.

[0023] The X-axis movement mechanism includes an X-axis motor 18, a driving synchronous pulley 19, an X-axis guide rail 22, a driven synchronous pulley 26, an X-axis slider 27, a synchronous belt 30, and an X-axis guide rail bracket 31; at least one X-axis guide rail bracket 31 is mounted on the top surface of each Y-axis slider 17; the X-axis motor 18 is mounted on the outer side surface of a Y-axis slider 17, and the output shaft extends upward and is connected to the lower end of the central axis of the driving synchronous pulley 19; the driven synchronous pulley 26 is mounted on the top surface of another Y-axis slider 17; the synchronous belt 30 is sleeved on both the driving synchronous pulley 19 and the driven synchronous pulley 26 at the same time; both ends of the X-axis guide rail 22 are respectively mounted on two X-axis guide rail brackets 31, and the middle part penetrates through the X-axis slider 27, and at the same time, the middle part of one side of the synchronous belt 30 is fixed on the X-axis slider 27.

[0024] The detection mechanism includes a detection platform 25 and a detection probe 24; the bottom surface of the detection platform 25 is fixed on the top surface of the X-axis slider 27; the detection probe 24 is vertically arranged, and the lower end is fixed on the detection platform 25.

[0025] The controller uses a computer or a mobile phone, and is electrically connected or wirelessly connected to the electric driving wheels 2, the motor 16, the X-axis motor 18, the Y-axis motor 23, the detection probe 24, the A-axis driving motor, and the C-axis driving motor respectively.

[0026] The working principle of the occupational health exhaust hood detection device provided by the present invention is described as follows: When the occupational health exhaust hood detection work needs to be carried out, the experimenter first turns on the power supply, and starts the electric driving wheels 2 under the control of the controller. The electric driving wheels 2 located on both sides of the moving structure rotate differentially to make the device move autonomously along the preset path to directly below the exhaust hood to be detected; then the motor 16 is turned on, which drives the driving bevel gear 15 to rotate, and then drives the driven bevel gear 6 and the linkage gear disc 14 meshing with the driving bevel gear 15 to rotate. Next, the special-shaped gear 13 meshing with the preset track groove on the linkage gear disc 14 will move as the linkage gear disc 14 rotates. The combined movement of the multi-stage special-shaped gear 13 and the connecting rod 7 makes the scissors lift platform 33 rise to the set height at the set speed; then the A-axis drive motor is turned on to rotate the cradle swing arm 8 to an appropriate angle, so that the XY-axis movement mechanism and the detection probe 24 located on the C-axis rotation assembly 10 form an appropriate detection angle relative to the exhaust hood. After that, the Y-axis motor 23 is started to drive the Y-axis lead screw 20 to rotate, and then drives the two Y-axis sliders 17 to move, so as to control the entire Y-axis movement mechanism to move in the X direction. At the same time, the X-axis motor 18 is started to drive the driving synchronous pulley 19 to rotate, so as to drive the detection platform 25 located on the X-axis slider 27 to move. During this process, the exhaust hood is detected by the detection probe 24 installed on the detection platform 25, thereby realizing the three-dimensional movement control of the detection platform 25 in the XYZ directions; finally, the detection probe 24 transmits the recorded data to the controller in real time for the experimenter to analyze, and the detection process is completed.

Claims

1. An occupational health exhaust hood detection device, characterized in that: The occupational health exhaust hood detection device includes a moving structure, a lifting mechanism, an identification and positioning mechanism, a detection mechanism and a controller; the lifting mechanism is installed at the upper end of the moving structure; the identification and positioning mechanism is arranged at the upper end of the lifting mechanism; the detection mechanism is installed on the identification and positioning mechanism; the controller is electrically connected or wirelessly connected to the electric control devices in the moving structure, the lifting mechanism, the identification and positioning mechanism and the detection mechanism respectively.

2. The occupational health exhaust hood detection device according to claim 1, wherein: The moving structure includes a chassis (1), electric driving wheels (2), universal wheels (3) and a vehicle frame (4); the vehicle frame (4) is installed on the chassis (1); two groups of electric driving wheels (2) are respectively installed in the middle of both sides of the chassis (1); a group of universal wheels (3) are respectively installed at the four corners of the chassis (1).

3. The occupational health exhaust hood detection device according to claim 1, characterized in that: The lifting mechanism includes a base (5), a driven bevel gear (6), a connecting rod (7), a special-shaped gear (13), a linkage gear disk (14), a driving bevel gear (15), a motor (16) and a scissors lift platform (33); among them, the base (5) includes a bottom plate and multiple support columns; the bottom plate is circular, horizontally arranged, and the bottom surface is fixed on the top surface of the vehicle frame (4); the lower ends of the multiple support columns are fixedly spaced on the edge of the top surface of the bottom plate, and a vertical opening is formed in the middle of the upper end of each support column along the radial direction of the bottom plate; the motor (16) is installed on one side of the bottom plate, and the output shaft horizontally extends into the interior of the base (5) and the outer end is connected to the central axis of the driving bevel gear (15); the linkage gear disk (14) is horizontally arranged in the upper interior of the base (5), and a parametrically designed track groove is provided on the top surface; the driven bevel gear (6) is vertically meshed with the driving bevel gear (15), and the upper end of the central axis of the driven bevel gear (6) is connected to the middle of the bottom surface of the linkage gear disk (14); the outer ends of each connecting rod (7) and a special-shaped gear (13) are coaxially installed in the vertical opening at the upper end of a support column, and the teeth on the special-shaped gear (13) are meshed with the track groove on the linkage gear disk (14); the multiple linkage rods (12) located at the lowermost side on the scissors lift platform (33) are respectively hinged to the inner ends of the multiple connecting rods (7).

4. The occupational health exhaust hood detection device according to claim 1, characterized in that: The recognition and positioning mechanism includes an XY-axis motion mechanism and a five-axis cradle turntable; among them, the five-axis cradle turntable includes an A-axis cradle swing arm (8), a rotating assembly (9), a C-axis rotating assembly (10), a tailstock support assembly (11) and a fixing plate (34); the fixing plate (34) is horizontally arranged, and the bottom surface is fixed on the top of the scissor lift platform (33); the lower ends of the A-axis rotating assembly (9) and the tailstock support assembly (11) are respectively fixed at both ends of the fixing plate (34); among them, the A-axis rotating assembly (9) includes an A-axis drive motor, an A-axis worm gear and an A-axis worm; the output end of the A-axis drive motor is connected to one end of the horizontally arranged A-axis worm; the A-axis worm gear is vertically arranged and meshes with the A-axis worm; the cradle swing arm (8) is a cuboid structure with an open upper end, and both ends are respectively connected to the central axis of the A-axis worm gear and the support axis of the tailstock support assembly (11). Driven by the A-axis drive motor, the cradle swing arm (8) can swing 120° clockwise or counterclockwise and lock at any angle; the C-axis rotating assembly (10) is fixed in the middle of the cradle swing arm (8), and includes a C-axis drive motor, a C-axis worm gear and a C-axis worm; the output end of the C-axis drive motor is connected to one end of the horizontally arranged C-axis worm; the C-axis worm gear is horizontally arranged and meshes with the C-axis worm, and a support bearing is provided at the upper end of the central axis of the C-axis worm gear. The XY-axis motion mechanism includes an X-axis motion mechanism and a Y-axis motion mechanism; among them, the Y-axis motion mechanism includes a Y-axis slider (17), a Y-axis lead screw (20), a Y-axis guide rail frame (21), a Y-axis motor (23), an L-shaped fixing frame (29) and a Y-axis guide rail (32); the bottom surface of the horizontal plate of the L-shaped fixing frame (29) is fixed on the end face of the support bearing of the C-axis rotating assembly (10), and a Y-axis guide rail frame (21) is respectively arranged at the inner and outer ends on both sides of the top surface of the horizontal plate. Driven by the C-axis drive motor, the XY-axis motion mechanism and the detection mechanism thereon can rotate 360 degrees in the plane and lock at any angle; both ends of the Y-axis guide rail (32) are respectively fixed on two Y-axis guide rail frames (21) on the same side; two Y-axis motors (23) are respectively installed at the upper parts of both ends of the inner side of the vertical plate of the L-shaped fixing frame (29), and the output shafts are respectively connected to one end of a Y-axis lead screw (20), and the two Y-axis lead screws (20) are respectively arranged in parallel above the two Y-axis guide rails (32); the other end of the Y-axis lead screw (20) is supported by a lead screw seat installed on the Y-axis guide rail frame (21) at the outer end; a Y-axis slider (17) is installed on each Y-axis lead screw (20), and at the same time, the middle part of the Y-axis guide rail (32) penetrates through the lower part of the Y-axis slider (17). The X-axis motion mechanism includes an X-axis motor (18), a driving synchronous pulley (19), an X-axis guide rail (22), a driven synchronous pulley (26), an X-axis slider (27), a synchronous belt (30), and an X-axis guide rail bracket (31); at least one X-axis guide rail bracket (31) is installed on the top surface of each Y-axis slider (17); the X-axis motor (18) is installed on the outer side surface of a Y-axis slider (17), and the output shaft extends upward and is connected to the lower end of the central axis of the driving synchronous pulley (19); the driven synchronous pulley (26) is installed on the top surface of another Y-axis slider (17); the synchronous belt (30) is sleeved on both the driving synchronous pulley (19) and the driven synchronous pulley (26) at the same time; the two ends of the X-axis guide rail (22) are respectively installed on two X-axis guide rail brackets (31), and the middle part penetrates through the X-axis slider (27), and at the same time, the middle part of one side of the synchronous belt (30) is fixed on the X-axis slider (27).

5. The occupational health exhaust hood detection device according to claim 1, characterized in that: The detection mechanism includes a detection platform (25) and a detection probe (24); the bottom surface of the detection platform (25) is fixed on the top surface of the X-axis slider (27); the detection probe (24) is vertically arranged, and the lower end is fixed on the detection platform (25).

6. The occupational health exhaust hood detection device according to claim 1, characterized in that: The controller uses a computer or a mobile phone, and is electrically connected or wirelessly connected to the electric driving wheels (2), the motor (16), the X-axis motor (18), the Y-axis motor (23), the detection probe (24), the A-axis driving motor, and the C-axis driving motor respectively.

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