Tail gas emission metering device for motor vehicle detection

Abstract

The utility model relates to the technical field of tail gas emission metering devices, in particular to a tail gas emission metering device for motor vehicle detection. According to the technical scheme, the internal connection structure comprises a meter body, and the internal connection structure comprises a first connection pipe, a hollow ring located at one end of the first connection pipe, a guide rod slidably inserted into the hollow ring, a pressing block located at one end of the guide rod, a rubber pad fixedly arranged at one end of the pressing block, a first air pump located on the outer wall of the first connection pipe, and a first air pipe communicated with the first air pump and the hollow ring. The outer connecting structure comprises a second connecting pipe, a lantern ring located at one end of the second connecting pipe, an annular air bag fixedly arranged in the lantern ring, a block-shaped air bag communicated with the annular air bag, a rubber strip connected with the block-shaped air bag, a second air pump fixedly arranged on the outer wall of the second connecting pipe, and a second air pipe communicated with the second air pump and the annular air bag. Through the arrangement of the inner connecting structure and the outer connecting structure, the tail gas emission detector solves the problems that the tail gas emission detector cannot effectively adapt to exhaust pipes of different motor vehicles, and the flexibility is insufficient in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas emission metering devices, in particular to a tail gas emission metering device for motor vehicle detection. Background Art

[0002] The exhaust emission metering device can accurately monitor various pollutants in automobile exhaust, detect and deal with high-emission vehicles, improve environmental quality, and reduce the adverse effects of air pollution on people's health. The exhaust emission detector has a variety of built-in sensors, such as carbon monoxide, nitrogen oxides and particulate matter concentration sensors. These sensors can monitor the concentration of various harmful gases in exhaust in real time.

[0003] During measurement, the detector is connected to the exhaust port of the car and the connection is ensured to be firm. At the same time, the measurement is started and run in idling state for a period of time to allow the engine and exhaust system to reach a stable state before exhaust measurement. However, the exhaust pipes of motor vehicles have different specifications, resulting in the inability to effectively adapt the connecting pipes of the same exhaust emission detector, and the use process is not flexible enough. For this reason, we propose an exhaust emission metering device for motor vehicle testing to solve the existing problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the background technology and to provide an exhaust emission metering device for motor vehicle detection.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust emission metering device for motor vehicle detection, comprising a meter body, wherein the air inlet end of the meter body is respectively connected with an internal connection structure and an external connection structure;

[0006] The internal connection structure includes a pipe 1, a hollow ring located at one end of the pipe 1, a guide rod slidably inserted into the hollow ring and arranged in a ring array, a pressure block located at one end of the guide rod, a rubber pad fixed to one end of the pressure block and stacked on each other, a pleated rubber sleeve located in the hollow ring and connected to the rubber pad on the side, an air pump 1 located on the outer wall of the pipe 1, and an air pipe 1 connected to the air pump 1 and the hollow ring;

[0007] The external connection structure includes a second connecting pipe, a ring located at one end of the second connecting pipe, an annular airbag fixed inside the ring, block airbags distributed in an annular array and connected to the annular airbags, rubber strips distributed in an annular array and connected to the block airbags and stacked on each other, a second air pump fixed on the outer wall of the connecting pipe, and a second air pipe connected to the second air pump and the annular airbag.

[0008] When using the exhaust emission metering device for motor vehicle detection in the present solution, when it is necessary to connect the inner wall of the exhaust pipe of the motor vehicle, one end of the pipe is inserted into the inner wall of the exhaust pipe, and the air pump delivers air pressure into the hollow ring to pressurize the inside of the hollow ring. When the pressure acts on the guide rod, the guide rod extends outward, thereby pulling the pleated rubber sleeve to extend, the guide rod drives the pressure block to move, the pressure block drives the rubber pad to move, and the rubber pad is attached to the inner wall of the exhaust pipe, so that the meter body is connected to the exhaust pipe of the motor vehicle through the pipe.

[0009] When it is necessary to connect the outer wall of the exhaust pipe of a motor vehicle, drag the second pipe connection to drive the sleeve ring to be connected to the outer wall of the exhaust pipe. The air pump delivers air pressure into the annular airbag, and then enters the block airbag through the annular airbag, thereby squeezing the rubber strip. The block airbags fit together when inflated, and the rubber strip fills the gap and fits the outer wall of the exhaust pipe, thereby realizing the connection between the meter body and the exhaust pipe of the motor vehicle through the second pipe connection, and measuring the exhaust gas of the motor vehicle through the meter body.

[0010] Preferably, a base is provided at the lower end of the meter body, pulleys are provided at the four corners of the lower end of the base, and a display panel is provided at the front end of the meter body. The base supports the bottom of the meter body, and the bottom of the meter body is supported by the pulleys for rolling, so that the meter body is convenient to move, and the detected value is displayed on the display panel.

[0011] Preferably, a control valve 1 is arranged inside the pipe 1, and a pressure relief valve 1 is arranged inside the air pipe 1. The control valve 1 controls the opening and closing of the pipe 1, and the pressure relief valve 1 releases pressure inside a pair of hollow rings of the air pipe.

[0012] Preferably, the hollow ring is embedded with sliding sleeves distributed in an annular array, and one end of the guide rod is slidably inserted into the sliding sleeve, which plays a role of sliding support for the guide rod.

[0013] Preferably, a limiting ring is sleeved on the outer wall of one end of the guide rod, and a spring sleeved on the outer side of the guide rod is provided at one end of the limiting ring.

[0014] Preferably, one end of the spring is connected to the outer wall of the hollow ring, and the outer wall of the collar is provided with symmetrically distributed grips. The elastic force of the spring acts on the guide rod through the limit ring, so that the guide rod is automatically reset by the elastic force after use, which is convenient for reuse. When the grip is grasped, it is convenient for the collar to be connected to the exhaust pipe.

[0015] Preferably, a control valve 2 is provided inside the second pipe, and a pressure relief valve 2 is provided inside the lower end of the annular airbag. The control valve 2 controls the opening and closing of the second pipe, and releases the pressure inside the annular airbag through the pressure relief valve.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. The utility model is directly plugged into the exhaust pipe of a motor vehicle through an internal connection structure, and the internal connection structure can be adjusted in radius, effectively fitting with the inner wall of the exhaust pipe, thereby realizing exhaust gas collection during exhaust gas metering and detection of motor vehicles;

[0018] 2. At the same time, the suction end of the exhaust emission detector is also provided with an external connection structure, which is sleeved on the outer wall of the exhaust pipe of the motor vehicle to achieve the pipe connection during the detection. The external connection structure can adjust the radius and effectively fit the outer wall of the exhaust pipe of different specifications, so as to better meet the requirements of different vehicle exhaust pipe specifications and have higher flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a bottom-up three-dimensional structural schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the pipe of the utility model from one side;

[0022] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the hollow ring of the utility model;

[0023] Figure 5 This is a schematic diagram of the main three-dimensional structure of the pipe of the utility model;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the sleeve ring of the utility model from a side view.

[0025] Reference numerals:

[0026] 100. Measuring instrument body; 101. Base; 102. Pulley; 103. Display panel;

[0027] 200, internal connection structure; 201, control valve 1; 202, connecting pipe 1; 203, air pump 1; 204, air pipe 1; 205, pressure relief valve 1; 206, rubber pad; 207, pleated rubber sleeve; 208, pressure block; 209, limit ring; 210, guide rod; 211, sliding sleeve; 212, spring; 213, hollow ring;

[0028] 300. External connection structure; 301. Second air pipe; 302. Second air pump; 303. Second connecting pipe; 304. Second control valve; 305. Handle; 306. Second pressure relief valve; 307. Ring; 308. Annular airbag; 309. Block airbag; 310. Rubber strip. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-Figure 6 As shown, the utility model proposes an exhaust emission metering device for motor vehicle detection, comprising a meter body 100, wherein the air inlet end of the meter body 100 is respectively connected with an inner connection structure 200 and an outer connection structure 300;

[0031] The inner connection structure 200 includes a pipe 202, a hollow ring 213 located at one end of the pipe 202, a guide rod 210 slidably inserted in the hollow ring 213 and arranged in a ring array, a pressure block 208 located at one end of the guide rod 210, a rubber pad 206 fixed to one end of the pressure block 208 and stacked on each other, a pleated rubber sleeve 207 located in the hollow ring 213 and connected to the rubber pad 206 on the side, an air pump 203 located on the outer wall of the pipe 202, and an air pipe 204 connected to the air pump 203 and the hollow ring 213.

[0032] A base 101 is provided at the lower end of the meter body 100, pulleys 102 are provided at the four corners of the lower end of the base 101, and a display panel 103 is provided at the front end of the meter body 100;

[0033] A control valve 201 is disposed inside the pipe 202, and a pressure relief valve 205 is disposed inside the air pipe 204;

[0034] The hollow ring 213 is embedded with sleeves 211 distributed in a circular array, and one end of the guide rod 210 is slidably inserted into the sleeve 211;

[0035] The outer wall of one end of the guide rod 210 is sleeved with a limit ring 209, and one end of the limit ring 209 is provided with a spring 212 sleeved on the outer side of the guide rod 210;

[0036] One end of the spring 212 is connected to the outer wall of the hollow ring 213, and the outer wall of the ring 307 is provided with symmetrically distributed handles 305;

[0037] Based on the implementation steps of Example 1: When the exhaust pipe of a motor vehicle needs to be connected internally, one end of the pipe 202 is plugged into the inner wall of the exhaust pipe, and air pressure is injected into the hollow ring 213 through the air pump 203, so that the guide rod 210 stretches and causes the pleated rubber sleeve 207 to extend. The movement of the guide rod 210 drives the pressing block 208 and the rubber pad 206 to fit the inner wall of the exhaust pipe, ensuring that the meter body 100 is connected to the exhaust pipe through the pipe 202. The inner connection structure 200 can be effectively plugged into the exhaust pipe of the motor vehicle and fit the inner wall through the adjustable radius, realizing exhaust gas collection, simplifying the operation steps, improving the convenience and efficiency of the operation, and making the connection and removal process faster and more convenient.

[0038] like Figure 1-Figure 6 As shown, compared with the first embodiment, the exhaust emission metering device for motor vehicle detection proposed by the utility model further includes: the external connection structure 300 includes a second pipe 303, a collar 307 located at one end of the second pipe 303, an annular airbag 308 fixed inside the collar 307, block airbags 309 distributed in an annular array and connected to the annular airbags 308, rubber strips 310 distributed in an annular array and connected to the block airbags 309 and stacked on each other, a second air pump 302 fixed on the outer wall of the pipe, and a second air pipe 301 connected to the second air pump 302 and the annular airbag 308;

[0039] A second control valve 304 is disposed inside the second pipe 303, and a second pressure relief valve 306 is disposed inside the lower end of the annular air bag 308;

[0040] In this embodiment, for external connection, dragging the second pipe 303 can make the ring 307 sleeved on the outer wall of the exhaust pipe, and the second air pump 302 transmits air pressure into the block airbag 309 through the annular airbag 308. The block airbag 309 expands and compresses the rubber strip 310, which are pressed together. The rubber strip 310 fills the gap and fits with the outer wall of the exhaust pipe to ensure that the meter body 100 is connected to the exhaust pipe through the second pipe 303. The external connection structure 300 can also fit tightly with the outer walls of exhaust pipes of different specifications by adjusting the radius to ensure a stable connection. The tight fit of the internal and external connections can avoid leakage and deformation problems during data collection, which is conducive to accurately obtaining exhaust emission data. The internal and external connections can adjust the radius according to different vehicle models and exhaust pipe diameters to adapt to exhaust pipes of different specifications. It has high versatility and adaptability, does not require additional adapters, and has higher flexibility and ease of operation.

[0041] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An exhaust emission metering device for motor vehicle detection, comprising a meter body (100), characterized in that: The air inlet end of the meter body (100) is respectively connected to an inner connection structure (200) and an outer connection structure (300); The internal connection structure (200) comprises a pipe (202), a hollow ring (213) located at one end of the pipe (202), a guide rod (210) slidably inserted into the hollow ring (213) and arranged in a ring array, a pressure block (208) located at one end of the guide rod (210), a rubber pad (206) fixed to one end of the pressure block (208) and stacked on each other, a pleated rubber sleeve (207) located in the hollow ring (213) and connected to the rubber pad (206) on the side, an air pump (203) located on the outer wall of the pipe (202), and an air pipe (204) connected to the air pump (203) and the hollow ring (213); The external connection structure (300) comprises a second pipe (303), a collar (307) located at one end of the second pipe (303), an annular airbag (308) fixedly placed inside the collar (307), block-shaped airbags (309) distributed in an annular array and communicating with the annular airbags (308), rubber strips (310) distributed in an annular array and connected to the block-shaped airbags (309) and stacked on each other, a second air pump (302) fixedly placed on the outer wall of the pipe, and a second air pipe (301) communicating with the second air pump (302) and the annular airbag (308).

2. The exhaust emission metering device for motor vehicle detection according to claim 1, characterized in that: A base (101) is provided at the lower end of the meter body (100), pulleys (102) are provided at the four corners of the lower end of the base (101), and a display panel (103) is provided at the front end of the meter body (100).

3. The exhaust emission metering device for motor vehicle detection according to claim 1, characterized in that: A control valve (201) is disposed inside the connecting pipe (202), and a pressure relief valve (205) is disposed inside the air pipe (204).

4. The exhaust emission metering device for motor vehicle detection according to claim 1, characterized in that: The hollow ring (213) is embedded with sliding sleeves (211) distributed in a ring array, and one end of the guide rod (210) is slidably inserted into the sliding sleeves (211).

5. The exhaust emission metering device for motor vehicle detection according to claim 1, characterized in that: A limiting ring (209) is sleeved on the outer wall of one end of the guide rod (210), and a spring (212) sleeved on the outer side of the guide rod (210) is provided at one end of the limiting ring (209).

6. The exhaust emission metering device for motor vehicle detection according to claim 5, characterized in that: One end of the spring (212) is connected to the outer wall of the hollow ring (213), and the outer wall of the sleeve ring (307) is provided with symmetrically distributed handles (305).

7. The exhaust emission metering device for motor vehicle detection according to claim 1, characterized in that: A second control valve (304) is disposed inside the second connecting pipe (303), and a second pressure relief valve (306) is disposed inside the lower end of the annular air bag (308).

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