CN113325143B - Tail gas collecting device for motor vehicle detection - Google Patents
Tail gas collecting device for motor vehicle detection Download PDFInfo
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- CN113325143B CN113325143B CN202110888524.9A CN202110888524A CN113325143B CN 113325143 B CN113325143 B CN 113325143B CN 202110888524 A CN202110888524 A CN 202110888524A CN 113325143 B CN113325143 B CN 113325143B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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Abstract
The invention relates to the technical field of motor vehicle exhaust detection, in particular to an exhaust gas collecting device for motor vehicle detection, which comprises a supporting tube, wherein a connecting mechanism used for connecting an exhaust tube is arranged on the inner side of the supporting tube, the output end of the connecting mechanism is connected with a detector through an exhaust tube, a positioning mechanism connected with the supporting tube is arranged on the outer side of the connecting mechanism, a control box is fixedly connected and arranged on the outer side of the supporting tube, a driving mechanism used for controlling the connecting mechanism to move is arranged on the inner side of the control box, an air inlet tube is fixedly connected and arranged on the control box, the other end of the air inlet tube is connected with the output end of the detector through a return tube, and the control box is connected with the positioning mechanism through a gas pipe. And then the stability of being connected between connecting pipe and the tail gas pipe has been guaranteed.
Description
Technical Field
The invention relates to the technical field of motor vehicle tail gas detection, in particular to a tail gas collecting device for motor vehicle detection.
Background
The exhaust gas discharged by automobile mainly comprises carbon monoxide (CO), Hydrocarbon (HC) and Nitrogen Oxide (NOX), etc., after they are accumulated in the air to a certain extent, under the action of sunlight, the nitrogen compound and hydrocarbon can react to produce photochemical smog containing nitrogen dioxide (NO2) and ozone (O3), both of them are insoluble in water, and can be inhaled into human body to be driven into lung for a long time, and when the concentration is high, toxic edema can be caused, and the toxic edema can be formed after entering blood, so that the tissue can be anoxic, and the harm to human health is very large. In addition, the oxyhydrogen compound can form acid rain after entering the atmosphere, and the ecological environment is damaged.
When the motor vehicle discharges the tail gas standard and detects, need collect with the tail gas that corresponds tail gas collection device will motor vehicle discharge, but general tail gas collection device exists when using, fixes the insecure condition on the blast pipe, leads to tail gas to carry unstably, and then leads to the testing result inaccurate, consequently, to above current situation, the urgent need develops a tail gas collection device for motor vehicle detects to overcome not enough in the current practical application.
Disclosure of Invention
The invention aims to provide an exhaust gas collecting device for motor vehicle detection, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a tail gas collection system for motor vehicle detects, includes the stay tube, the stay tube inboard is provided with the coupling mechanism who is used for connecting the tail gas pipe, the coupling mechanism output passes through the outlet duct and is connected with the detector, the coupling mechanism outside be provided with the positioning mechanism that the stay tube links to each other, stay tube outside fixed connection is provided with the control box, the control box inboard is provided with the actuating mechanism who is used for controlling coupling mechanism to remove, fixed connection is provided with the intake pipe on the control box, the intake pipe other end passes through the back flow and links to each other with the detector output, the control box pass through the gas-supply pipe with positioning mechanism links to each other.
As a further scheme of the invention: the connecting mechanism comprises a connecting pipe, the inner side of the connecting pipe is provided with an air guide pipe connected with the air outlet pipe, the air guide pipe is provided with an isolation cover through fixed connection between the support pipes, the outer side of the connecting pipe is provided with a fixed block in sliding connection with the support pipes, the outer side of the fixed block is provided with a push plate, the outer side of the push plate is provided with a rack, the rack is connected with a clamping mechanism arranged on two sides of the connecting pipe, the connecting pipe is far away from the fixed block, one side of the fixed block is provided with an adjusting block, the outer side of the adjusting block is provided with a fixed rod, the inner side of the fixed rod is in threaded connection with a threaded rod connected with the support pipes in a rotating mode, and the threaded rod is connected with the driving mechanism through a bevel gear.
As a further scheme of the invention: the fixture is including setting up the driven lever of connecting pipe both sides, the driven lever with the stay tube rotates to be connected, driven lever outside fixed connection be provided with the driven gear that rack toothing connects, driven lever outside fixed connection is provided with a plurality of connecting blocks, the inboard sliding connection of connecting block is provided with the movable block, the movable block with fixed connection is provided with the spring between the connecting block.
As a further scheme of the invention: actuating mechanism includes that fixed connection sets up the inboard baffle of control box, the baffle is kept away from intake pipe one side is provided with the mounting panel, the mounting panel with fixed connection is provided with the telescopic link between the baffle, mounting panel outside fixed connection is provided with the butt, motor output and actuating lever fixed connection, the actuating lever is connected with the rotation and is set up bull stick sliding connection on the baffle, the bull stick inboard is provided with a plurality of spacing grooves, spacing inslot side sliding connection be provided with actuating lever fixed connection's stopper, the baffle is close to intake pipe one side be provided with bull stick fixed connection's fan, the bull stick with be provided with drive mechanism between the coupling mechanism, the mounting panel outside be provided with baffle fixed connection's filtering mechanism.
As a further scheme of the invention: the transmission mechanism comprises a connecting rod which is rotatably connected and arranged on the inner side of the control box, the connecting rod is arranged opposite to the driving rod, the connecting rod is close to the inner side of one end of the driving rod and is provided with a connecting groove, the outer side of the connecting rod is provided with a transmission rod which is rotatably connected with the supporting tube, and the two ends of the transmission rod are connected with the connecting rod and the threaded rod through bevel gears in a meshed mode.
As a further scheme of the invention: filtering mechanism includes that fixed connection sets up the filter box in the baffle outside, the inboard fixed connection of filter box is provided with the fixed plate, fixed plate one side is provided with and is used for connecting the filter box with the communicating pipe of baffle, the communicating pipe output outside be provided with the filter box rotates the control lever of connection, the control lever is close to communicating pipe one end outside fixed connection is provided with a plurality of flabellums, the baffle is kept away from flabellum one side be provided with control lever fixed connection's runner, the runner outer fringe is rotated and is connected and be provided with the carriage release lever, the carriage release lever other end sets up with sliding connection the purifying box in the fixed plate outside is articulated, the purifying box inboard is provided with the ternary catalyst, the fixed plate is kept away from purifying box one side with the joint is provided with the active carbon filter layer between the filter box.
As a further scheme of the invention: the positioning mechanism comprises an air guide groove arranged on the inner side of the pipe wall of the supporting pipe, the air guide groove is connected with the gas conveying pipe, a plurality of piston pipes connected with the air guide groove are fixedly connected on the inner side of the supporting pipe, a piston is arranged on the inner side of each piston pipe in a sliding connection mode, and a pressing block is fixedly connected to one side of the connecting pipe and close to the piston.
As a further scheme of the invention: the mounting panel outside fixed connection be provided with baffle sliding connection's push rod, the push rod outside be provided with control box sliding connection's clamp splice, the clamp splice is located the connecting rod outside, the clamp splice with it is provided with the movable rod to articulate between the push rod.
Compared with the prior art, the invention has the beneficial effects that:
1. by arranging the connecting mechanism, the connecting pipe is driven by the driving mechanism to be abutted against the tail gas pipe entering the supporting pipe, the connecting pipe drives the push plate to move in the moving process, and the rack on the push plate can drive the clamping mechanism to clamp and fix the connecting pipe, so that the connecting stability between the connecting pipe and the tail gas pipe is ensured;
2. by arranging the clamping mechanism, the driven rod drives the connecting block to rotate under the action of the rack and the driven gear, along with the rotation of the connecting block, the movable block which is in sliding connection with the connecting block is abutted against the pipe wall of the connecting pipe, and the clamping and fixing of the connecting pipe are realized under the action of the spring, and along with a plurality of connecting blocks, the reliability of the device for fixing the connecting pipe can be enhanced;
3. the positioning mechanism is arranged, air exhausted by the driving mechanism enters the inner side of the air guide groove through the air pipe, the inner side of the air pipe is fixedly connected with the first valve, the air entering the air guide groove pushes the piston arranged on the inner side of the piston pipe to move, and the pressing block on the piston clamps the tail gas pipe entering the supporting pipe, so that the device is stably fixed on the outer side of the tail gas pipe, and the stability of the device in use is further improved;
4. the driving mechanism is arranged, the driving rod on the motor is used for driving the rotating rod to rotate, the rotating rod drives the fan to rotate, so that gas can be absorbed, the air exhausted after detection of the detector is absorbed, the absorbed air enters the filtering mechanism and is filtered, the positioning mechanism can be driven, meanwhile, the motor enables the driving rod to be connected with the transmission mechanism under the adjustment of the telescopic rod, and the motor drives the transmission assembly through the driving rod to drive the connecting mechanism;
5. through setting up filtering mechanism, can realize purifying tail gas to the reduction can drive when flowing in the filter box the flabellum realizes the rotation of control lever, the control lever drive the runner rotates, and the runner passes through the carriage release lever to be realized the repetitive movement of purifying box for the tail gas that gets into in the purifying box can fully contact with three way catalyst, and then hoisting device's purifying effect.
Drawings
Fig. 1 is a front view of an exhaust gas collecting device for vehicle inspection.
FIG. 2 is a side view of a support tube in an exhaust collection device for vehicle testing.
FIG. 3 is a top view of a support tube in an exhaust collection device for vehicle testing.
Fig. 4 is a partial structural schematic diagram of a driving mechanism in an exhaust gas collecting device for motor vehicle detection.
Fig. 5 is a front view of a filter mechanism in an exhaust gas collection device for vehicle testing.
Fig. 6 is a bottom view of a filter mechanism in an exhaust collection device for vehicle testing.
Fig. 7 is a schematic structural diagram of a connecting pipe in an exhaust gas collecting device for motor vehicle detection.
Fig. 8 is a schematic structural view of a driven lever in an exhaust gas collecting apparatus for automobile inspection.
In the figure: 1-support tube, 2-tail gas tube, 3-connecting tube, 4-gas-guide tube, 5-isolation cover, 6-gas-guide tube, 7-sealing ring, 8-fixed block, 9-push plate, 10-driven rod, 11-driven gear, 12-adjusting block, 13-fixed rod, 14-threaded rod, 15-control box, 16-return tube, 17-gas-inlet tube, 18-baffle plate, 19-mounting plate, 20-motor, 21-driving rod, 22-rotating rod, 23-fan, 24-connecting rod, 25-driving rod, 26-push rod, 27-movable rod, 28-clamping block, 29-filter box, 30-gas-guide tube, 31-gas-guide groove, 32-piston tube, 33-pressing block, 34-piston, 35-connecting block, 36-movable block, 37-rack, 38-limiting block, 39-limiting groove, 40-connecting groove, 41-communicating pipe, 42-fixing plate, 43-control rod, 44-fan blade, 45-activated carbon filtering layer, 46-purifying box, 47-three-way catalyst, 48-moving rod, 49-rotating wheel and 50-air outlet.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
Referring to fig. 1, in an embodiment of the present invention, an exhaust gas collecting device for motor vehicle detection includes a supporting tube 1, a connecting mechanism for connecting an exhaust pipe 2 is disposed inside the supporting tube 1, an output end of the connecting mechanism is connected to a detector through an exhaust pipe 6, a positioning mechanism connected to the supporting tube 1 is disposed outside the connecting mechanism, a control box 15 is fixedly connected to an outside of the supporting tube 1, a driving mechanism for controlling the movement of the connecting mechanism is disposed inside the control box 15, an intake pipe 17 is fixedly connected to the control box 15, the other end of the intake pipe 17 is connected to an output end of the detector through a return pipe 16, and the control box 15 is connected to the positioning mechanism through a gas pipe 30.
Example 2
Referring to fig. 2, 3 and 7, in an embodiment of the present invention, the connecting mechanism includes a connecting pipe 3, an air duct 4 connected to the air outlet pipe 6 is slidably connected to an inner side of the connecting pipe 3, an isolation cover 5 is fixedly connected between the air duct 4 and the support pipe 1, a fixed block 8 slidably connected to the support pipe 1 is fixedly connected to an outer side of the connecting pipe 3, a push plate 9 is fixedly connected to an outer side of the fixed block 8, a rack 37 is fixedly connected to an outer side of the push plate 9, the rack 37 is connected to a clamping mechanism disposed on two sides of the connecting pipe 3, an adjusting block 12 is fixedly connected to a side of the connecting pipe 3 away from the fixed block 8, a fixing rod 13 is fixedly connected to an outer side of the adjusting block 12, a threaded rod 14 rotatably connected to the support pipe 1 is threadedly connected to an inner side of the fixing rod 13, the threaded rod 14 is connected with the driving mechanism through a bevel gear, the threaded rod 14 is driven to rotate by the driving mechanism through the connecting mechanism, the adjusting block 12 can be driven to move under the action of the threaded rod 14 and the fixed rod 13, the connecting pipe 3 is further abutted to the tail gas pipe 2 entering the supporting pipe 1, a groove is formed in the pipe wall inner side of one end, close to the tail gas pipe 2, of the supporting pipe 3, a sealing ring 7 is arranged on the inner side of the groove, the connecting pipe 3 can drive the push plate 9 to move in the moving process, the rack 37 on the push plate 9 can drive the clamping mechanism to clamp and fix the connecting pipe 3, and the stability of connection between the connecting pipe 3 and the tail gas pipe 2 is further guaranteed.
Referring to fig. 3 and 8, in an embodiment of the present invention, the clamping mechanism includes driven rods 10 disposed at two sides of the connecting pipe 3, the driven rods 10 are rotatably connected to the supporting pipe 1, a driven gear 11 engaged with the rack 37 is fixedly connected to an outer side of the driven rods 10, a plurality of connecting blocks 35 are fixedly connected to an outer side of the driven rods 10, movable blocks 36 are slidably connected to an inner side of the connecting blocks 35, a spring is fixedly connected between the movable blocks 36 and the connecting blocks 35, the driven rods 10 drive the connecting blocks 35 to rotate under the action of the rack 37 and the driven gear 12 by providing the clamping mechanism, with the rotation of the connecting blocks 35, the movable blocks 36 slidably connected to the connecting blocks 35 abut against a pipe wall of the connecting pipe 3, and clamping and fixing of the connecting pipe 3 are achieved under the action of the spring, by following a plurality of connection blocks 35, the reliability of the device fixing to the connection pipe 3 can be enhanced.
In the embodiment of the invention, the positioning mechanism comprises an air guide groove 31 arranged on the inner side of the tube wall of the support tube 1, the air guide groove 31 is connected with the air delivery tube 30, the inner side of the support tube 1 is fixedly connected with a plurality of piston tubes 32 connected with the air guide groove 31, the inner sides of the piston tubes 32 are slidably connected with a piston 34, one side of the piston 34 close to the connecting tube 3 is fixedly connected with a press block 33, air exhausted by the driving mechanism enters the inner side of the air guide groove 31 through the air delivery tube 30 by arranging the positioning mechanism, the inner side of the air delivery tube 30 is fixedly connected with a first valve, the air entering the air guide groove 31 pushes the piston 34 arranged on the inner side of the piston tube 32 to move, the press block 33 on the piston 34 clamps the tail air tube 2 entering the support tube 1, so that the device is stably fixed on the outer side of the tail air tube 2, thereby improving the stability of the device in use.
Referring to fig. 1 and 4, in an embodiment of the present invention, the driving mechanism includes a partition plate 18 fixedly connected to the inner side of the control box 15, a mounting plate 19 is disposed on one side of the partition plate 18 away from the air inlet pipe 17, a telescopic rod is fixedly connected between the mounting plate 19 and the partition plate 18, a motor 20 is fixedly connected to the outer side of the mounting plate 19, an output end of the motor 20 is fixedly connected to a driving rod 21, the driving rod 21 is slidably connected to a rotating rod 22 rotatably connected to the partition plate 18, a plurality of limiting grooves 39 are disposed on the inner side of the rotating rod 22, a limiting block 38 fixedly connected to the driving rod 21 is slidably connected to the inner side of the limiting grooves 39, a fan 23 fixedly connected to the rotating rod 22 is disposed on one side of the partition plate 18 close to the air inlet pipe 17, and a transmission mechanism is disposed between the rotating rod 22 and the connection mechanism, mounting panel 19 outside be provided with 18 fixed connection's of baffle filtering mechanism through setting up actuating mechanism, utilizes actuating lever 21 drive on the motor 20 bull stick 22 rotates, bull stick 22 drive fan 23 is rotatory, can realize the absorption to gas, and then realizes absorbing the detector exhaust air after detecting, accomplishes in the absorbed air admission filtering mechanism and filters the back, can drive positioning mechanism, simultaneously, motor 20 make actuating lever 21 under the regulation of telescopic link with drive mechanism links to each other, and motor 20 passes through actuating lever 21 drive assembly can drive coupling mechanism.
In the embodiment of the present invention, the transmission mechanism includes a connecting rod 24 rotatably connected to the inner side of the control box 15, the connecting rod 24 is disposed opposite to the driving rod 21, and the connecting rod 24 is provided with a connecting groove 40 at the inner side of one end close to the driving rod 21, the outer side of the connecting rod 24 is provided with a transmission rod 25 which is rotatably connected with the supporting tube 1, the two ends of the transmission rod 25 are meshed and connected with the connecting rod 24 and the threaded rod 14 through bevel gears, by arranging the transmission mechanism, the motor 20 is driven to move by the expansion and contraction of the telescopic rod, the driving rod 21 is inserted into the connecting groove 40 along with the movement of the motor 20, and the connecting rod 24 is driven, the connecting rod 24 drives the transmission rod 25 to rotate through a bevel gear, and the transmission rod 25 drives the threaded rod 14 to rotate, so that the connecting pipe 3 is connected with the tail gas pipe 2.
In the embodiment of the invention, a push rod 26 slidably connected with the partition plate 18 is fixedly connected to the outer side of the mounting plate 19, a clamping block 28 slidably connected with the control box 15 is arranged on the outer side of the push rod 26, the clamping block 28 is arranged on the outer side of the connecting rod 24, a movable rod 27 is hinged between the clamping block 28 and the push rod 26, by arranging the push rod 26 and the clamping block 28, the telescopic rod can drive the push rod 26 to move in the process of driving the motor 20 to move, the push rod 26 drives the clamping block 28 to move through the movable rod 27, so that the clamping block 28 extrudes the connecting rod 24, the fixing of the transmission mechanism is further realized, the stability of the device after the tail gas pipe 2 is connected with the connecting pipe 3 is ensured, and the gas leakage can be effectively avoided.
In the embodiment of the invention, the filtering mechanism comprises a filtering box 29 fixedly connected and arranged at the outer side of the partition plate 18, a fixed plate 42 is fixedly connected and arranged at the inner side of the filtering box 29, a communicating pipe 41 for connecting the filtering box 29 with the partition plate 18 is arranged at one side of the fixed plate 42, a control rod 43 rotatably connected with the filtering box 29 is arranged at the outer side of the output end of the communicating pipe 41, a plurality of fan blades 44 are fixedly connected and arranged at the outer side of one end of the control rod 43 close to the communicating pipe 41, a rotating wheel 49 fixedly connected with the control rod 43 is arranged at one side of the partition plate 18 far away from the fan blades 44, a moving rod 48 is rotatably connected at the outer edge of the rotating wheel 49, the other end of the moving rod 48 is hinged with a purifying box 46 slidably connected and arranged at the outer side of the fixed plate 42, a three-way catalyst 47 is arranged at the inner side of the purifying box 46, an activated carbon filtering layer 45 is clamped and arranged between one side of the fixed plate 42 far away from the purifying box 46 and the filtering box 29, through setting up filter mechanism, can realize purifying tail gas to the pollution that the reduction led to the fact the environment, and tail gas can drive when flowing in filter box 29 flabellum 44 is realized the rotation of control lever 43, the drive of control lever 43 runner 49 rotates, and runner 49 passes through the carriage release lever 48 and realizes the repetitive motion of filter box 46 makes the tail gas that gets into in the filter box 46 can fully contact with three way catalyst, and then hoisting device's purifying effect, in addition, filter box 29 is close to be provided with gas outlet 50 on the wall of runner 49 one side.
The tail gas collecting device for motor vehicle detection is characterized in that a connecting mechanism is arranged, a driving mechanism is used for driving the threaded rod 14 to rotate, the threaded rod 14 and the fixed rod 13 act to drive the adjusting block 12 to move, so that the connecting pipe 3 is abutted to the tail gas pipe 2 entering the supporting pipe 1, a groove is formed in the pipe wall of one end, close to the tail gas pipe 2, of the supporting pipe 3, a sealing ring 7 is arranged on the inner side of the groove, the connecting pipe 3 drives the push plate 9 to move in the moving process, the rack 37 on the push plate 9 can drive the clamping mechanism to clamp and fix the connecting pipe 3, so that the stability of connection between the connecting pipe 3 and the tail gas pipe 2 is ensured, the driven rod 10 drives the connecting block 35 to rotate under the action of the rack 37 and the driven gear 12, and along with the rotation of the connecting block 35, the movable block 36 in sliding connection with the connecting block 35 is abutted to the pipe wall of the connecting pipe 3, the clamping and fixing of the connecting pipe 3 are realized under the action of the spring, the fixing reliability of the device on the connecting pipe 3 can be enhanced through the plurality of connecting blocks 35, the driving rod 21 on the motor 20 is used for driving the rotating rod 22 to rotate, the rotating rod 22 drives the fan 23 to rotate, the absorption of gas can be realized, the absorption of the air discharged after the detection of the detector is realized, the absorbed air enters the filtering mechanism to be filtered, the positioning mechanism can be driven, meanwhile, the driving rod 21 is connected with the transmission mechanism through the adjustment of the telescopic rod by the motor 20, the transmission assembly can be driven by the motor 20 through the driving rod 21 to drive the connecting mechanism, the push rod 26 and the clamping block 28 are arranged, the telescopic rod drives the push rod 26 to move in the process of driving the motor 20 to move, the push rod 26 drives the clamping block 28 to move through the movable rod 27, make clamp splice 28 extrude connecting rod 24, and then realize fixing drive mechanism, guaranteed that the device is being connected back stability with connecting pipe 3 at the completion tail gas pipe 2, can effectively avoid gaseous emergence to leak, through setting up filter mechanism, can realize purifying tail gas to reduce the pollution that causes the environment, and tail gas can drive when flowing in filter box 29 flabellum 44 realizes the rotation of control lever 43, the control lever 43 drive runner 49 rotates, and runner 49 realizes through carriage release lever 48 the motion repeatedly of purification box 46 for the tail gas that gets into in the purification box 46 can fully contact with three way catalyst, and then hoisting device's purifying effect, in addition, filter box 29 is close to be provided with gas outlet 50 on the wall of runner 49 one side.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (4)
1. The tail gas collecting device for motor vehicle detection comprises a supporting pipe (1), and is characterized in that a connecting mechanism used for being connected with a tail gas pipe (2) is arranged on the inner side of the supporting pipe (1), the output end of the connecting mechanism is connected with a detector through a gas outlet pipe (6), a positioning mechanism connected with the supporting pipe (1) is arranged on the outer side of the connecting mechanism, a control box (15) is fixedly connected to the outer side of the supporting pipe (1), a driving mechanism used for controlling the connecting mechanism to move is arranged on the inner side of the control box (15), a gas inlet pipe (17) is fixedly connected to the control box (15), the other end of the gas inlet pipe (17) is connected with the output end of the detector through a backflow pipe (16), and the control box (15) is connected with the positioning mechanism through a gas pipe (30);
coupling mechanism includes connecting pipe (3), connecting pipe (3) inboard sliding connection be provided with air duct (4) that outlet duct (6) link to each other, air duct (4) with fixed connection is provided with cage (5) between stay tube (1), connecting pipe (3) outside fixed connection be provided with stay tube (1) sliding connection's fixed block (8), fixed block (8) outside fixed connection is provided with push pedal (9), push pedal (9) outside fixed connection is provided with rack (37), rack (37) are in with the setting the fixture of connecting pipe (3) both sides links to each other, connecting pipe (3) are kept away from fixed block (8) one side fixed connection is provided with regulating block (12), regulating block (12) outside fixed connection is provided with dead lever (13), dead lever (13) inboard threaded connection be provided with stay tube (1) rotate the threaded rod of being connected (1), (4), air duct (4) and fixed connection are connected to each other 14) The threaded rod (14) is connected with the driving mechanism through a bevel gear;
the clamping mechanism comprises driven rods (10) arranged on two sides of the connecting pipe (3), the driven rods (10) are rotatably connected with the supporting pipe (1), driven gears (11) meshed with the racks (37) are fixedly connected to the outer sides of the driven rods (10), a plurality of connecting blocks (35) are fixedly connected to the outer sides of the driven rods (10), movable blocks (36) are slidably connected to the inner sides of the connecting blocks (35), and springs are fixedly connected between the movable blocks (36) and the connecting blocks (35);
the driving mechanism comprises a partition plate (18) fixedly connected with the inner side of the control box (15), the partition plate (18) is far away from the air inlet pipe (17) one side and is provided with a mounting plate (19), the mounting plate (19) is fixedly connected with the partition plate (18) and is provided with a telescopic rod, the mounting plate (19) is fixedly connected with a motor (20) in the outer side, the motor (20) output end is fixedly connected with a driving rod (21), the driving rod (21) is connected with a rotating rod (22) arranged on the partition plate (18) in a rotating manner and is in sliding connection with the rotating rod (22), a plurality of limiting grooves (39) are arranged on the inner side of the rotating rod (22), limiting blocks (38) fixedly connected with the driving rod (21) are arranged on the inner side of the limiting grooves (39) in a sliding manner, the partition plate (18) is close to the air inlet pipe (17), and a fan (23) fixedly connected with the rotating rod (22) is arranged on one side of the partition plate (18), a transmission mechanism is arranged between the rotating rod (22) and the connecting mechanism, and a filtering mechanism fixedly connected with the partition plate (18) is arranged on the outer side of the mounting plate (19);
positioning mechanism is including setting up stay tube (1) pipe wall inboard air guide groove (31), air guide groove (31) with gas-supply pipe (30) link to each other, stay tube (1) inboard fixed connection be provided with a plurality of with piston pipe (32) that air guide groove (31) link to each other, piston pipe (32) inboard sliding connection is provided with piston (34), piston (34) are close to connecting pipe (3) one side fixed connection is provided with briquetting (33).
2. The exhaust gas collection device for motor vehicle detection according to claim 1, wherein the transmission mechanism includes a connecting rod (24) rotatably connected and disposed inside the control box (15), the connecting rod (24) is disposed opposite to the driving rod (21), a connecting groove (40) is disposed inside one end of the connecting rod (24) close to the driving rod (21), a transmission rod (25) rotatably connected to the support tube (1) is disposed outside the connecting rod (24), and two ends of the transmission rod (25) are connected to the connecting rod (24) and the threaded rod (14) through bevel gears in a meshed manner.
3. The tail gas collecting device for motor vehicle detection according to claim 2, wherein the filtering mechanism comprises a filter box (29) fixedly connected and arranged on the outer side of the partition plate (18), a fixing plate (42) is fixedly connected and arranged on the inner side of the filter box (29), a communicating pipe (41) for connecting the filter box (29) and the partition plate (18) is arranged on one side of the fixing plate (42), a control rod (43) rotatably connected with the filter box (29) is arranged on the outer side of the output end of the communicating pipe (41), a plurality of fan blades (44) are fixedly connected and arranged on the outer side of one end, close to the communicating pipe (41), of the control rod (43), a rotating wheel (49) fixedly connected with the control rod (43) is arranged on one side, far away from the fan blades (44), of the partition plate (18), and a moving rod (48) is rotatably connected to the outer edge of the rotating wheel (49), the utility model discloses a purification device, including carriage release lever (48), carriage release lever (48) other end and sliding connection set up purification box (46) in fixed plate (42) outside are articulated, purification box (46) inboard is provided with three way catalyst (47), fixed plate (42) are kept away from purification box (46) one side with the joint is provided with activated carbon filter layer (45) between straining box (29).
4. The tail gas collecting device for motor vehicle detection according to claim 3, wherein a push rod (26) slidably connected with the partition plate (18) is fixedly connected to the outer side of the mounting plate (19), a clamping block (28) slidably connected with the control box (15) is arranged on the outer side of the push rod (26), the clamping block (28) is arranged on the outer side of the connecting rod (24), and a movable rod (27) is hinged between the clamping block (28) and the push rod (26).
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| CN211784607U (en) * | 2020-03-20 | 2020-10-27 | 山西泰合民防设备有限公司 | Sampling device for tail gas detection |
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| CN207586204U (en) * | 2017-11-16 | 2018-07-06 | 西华大学 | A kind of exhaust pipe expanding unit for motor vehicle environmental protection periodic inspection |
| CN211528356U (en) * | 2020-01-20 | 2020-09-18 | 河南省计量科学研究院 | Motor vehicle exhaust flow analysis mechanism suitable for different bore tail-gas pipes |
| CN211784607U (en) * | 2020-03-20 | 2020-10-27 | 山西泰合民防设备有限公司 | Sampling device for tail gas detection |
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