Detection device for tail gas of motor vehicle

Abstract

The utility model provides a detection device for motor vehicle tail gas, which relates to the technical field of motor vehicle tail gas detection and comprises a tail gas pipe, a fixing assembly is arranged in the tail gas pipe, a clamping assembly is arranged at the top of the fixing assembly, and the fixing assembly comprises a mounting frame. A connecting plate is fixedly connected to the outer surface of one side of the mounting frame, a first threaded rod is arranged in the mounting frame, and one end of the first threaded rod slidably penetrates through the outer surface of the connecting plate and extends to the other side of the connecting plate. According to the device, a first rotary knob is screwed to drive a first threaded rod to rotate, so that a threaded block can be driven to move, when the threaded block moves forwards, a sliding rod is pushed to move towards the outer side in cooperation with a connecting rod, and when a fixing plate abuts against the inner wall of a tail gas pipe, the device can be fixed to the inner wall of the tail gas pipe; therefore, the problem that the device is difficult to install when the external space of the tail gas rod is narrow can be avoided.

Description

Technical Field

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

[0002] Motor vehicle exhaust testing refers to the analysis and measurement of exhaust gas emitted when the vehicle is idling or in operating condition on site or on a vehicle operating test bench. The main items tested are carbon monoxide, nitrogen oxides, hydrocarbons, photochemical oxidants and smoke density. The large amount of harmful exhaust gas emitted by motor vehicles burning gasoline or diesel is the main mobile pollution source that pollutes the environment. Motor vehicle exhaust gas testing sampling devices are usually used to test the exhaust gas.

[0003] In the prior art, such as Chinese patent CN219777632U, a tubular detection device for motor vehicle exhaust gas includes an exhaust pipe and a support seat, a support block is arranged on the front side of the support seat, an exhaust gas detection body is arranged on the support block, a detection probe is arranged at the bottom of the exhaust gas detection body, a vent hole is opened on the bottom side of the detection probe, an annular groove is opened on the detection probe, a rubber ring is sleeved on the annular groove, a fixing component for easy adjustment is arranged on the support seat, and a supporting component for easy adjustment is arranged at the bottom of the support seat; the utility model realizes the installation of the exhaust gas detection body and the detection probe on the exhaust pipe through the cooperation between the fixing component and the supporting component, avoids the traditional motor vehicle exhaust gas detection method that can only perform exhaust gas detection on static motor vehicles for a certain period of time, thereby being able to reflect the exhaust gas emission situation of the motor vehicle under the driving state in real time.

[0004] In the above patent, although the device can detect exhaust gas when the motor vehicle is in motion, the device is mainly installed on the outer wall of the exhaust pipe by fixing components and supporting components. Due to the large number of motor vehicle models, the external space of the exhaust pipe of some motor vehicles is very limited. When the space is narrow, it will cause difficulties in installing the device. Therefore, in response to the above problem, we have proposed a new type of detection device for motor vehicle exhaust. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the device is mainly installed on the outer wall of the exhaust pipe by means of a fixing assembly and a supporting assembly. Due to the large number of motor vehicle models, the external space of the exhaust pipes of some motor vehicles is very limited. When the space is narrow, it will lead to difficulties in installing the device. A detection device for motor vehicle exhaust is proposed to solve the problem.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a detection device for exhaust gas of motor vehicles, including an exhaust pipe, a fixing component is arranged inside the exhaust pipe, a clamping component is arranged on the top of the fixing component, the fixing component includes a mounting frame, an outer surface of one side of the mounting frame is fixedly connected with a connecting plate, a first threaded rod is arranged inside the mounting frame, one end of the first threaded rod slides through the outer surface of the connecting plate and extends to the other side, a threaded block is threadedly connected to the outer surface of the first threaded rod, and rotating blocks are fixedly installed on the outer surfaces of the left and right sides of the threaded block, the interiors of the two rotating blocks are both rotatably connected with connecting rods through bearings, the outer surface of the connecting rod is rotatably connected with a sliding rod through a bearing, the outer surface of the sliding rod slides through the inner wall of the mounting frame and extends to the outside, and the outer surface of one side of the sliding rod is fixedly connected with the fixing plate.

[0007] Furthermore, a first knob is fixedly connected to one end of the first threaded rod, and an anti-slip pad is provided on an outer surface of one side of the fixing plate.

[0008] Furthermore, the clamping assembly includes a base, and a guide rod is symmetrically fixedly connected to the top of the base near the right side.

[0009] Furthermore, a pressing block is slidably arranged between the outer surfaces of the two guide rods.

[0010] Furthermore, a second threaded rod is provided through the top thread of the pressing block, and a second knob is fixedly connected to the top end of the second threaded rod.

[0011] Furthermore, a rotating seat is rotatably provided at the bottom end of the second threaded rod, and the rotating seat is fixedly installed on the top of the base.

[0012] Furthermore, an air intake pipe is arranged between the base and the pressing block, a plurality of air intake holes are opened on the outer surface of the air intake pipe near the front end, and an exhaust gas detection body is arranged at the rear end of the air intake pipe.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the first threaded rod is driven to rotate by turning the first knob, thereby driving the threaded block to move. When the threaded block moves forward, the connecting rod pushes the sliding rod to move outward. When the fixing plate conflicts with the inner wall of the exhaust pipe, the device can be fixed on the inner wall of the exhaust pipe, thereby avoiding the problem of difficulty in installing the device when the external space of the exhaust rod is narrow.

[0015] 2. In the utility model, the second knob is turned to drive the pressure block to move upward, thereby releasing the clamping of the intake pipe, making it convenient to remove the exhaust gas detector, which is convenient for later maintenance or replacement and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a detection device for motor vehicle exhaust gas is provided for the utility model;

[0017] Figure 2 A partial structural schematic diagram of a detection device for motor vehicle exhaust gas is provided for the utility model;

[0018] Figure 3 The utility model provides a schematic diagram of the structure of a fixed component of a detection device for motor vehicle exhaust gas;

[0019] Figure 4 The utility model provides a schematic diagram of the structure of a clamping assembly for a detection device of motor vehicle exhaust.

[0020] Legend: 1. Exhaust pipe; 2. Fixing assembly; 201. Mounting frame; 202. Connecting plate; 203. First threaded rod; 204. First knob; 205. Threaded block; 206. Rotating block; 207. Connecting rod; 208. Sliding rod; 209. Fixing plate; 210. Anti-skid pad; 3. Clamping assembly; 301. Base; 302. Guide rod; 303. Pressing block; 304. Second threaded rod; 305. Second knob; 306. Rotating seat; 4. Intake pipe; 41. Intake hole; 42. Exhaust detection body. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 4As shown, the utility model provides a detection device for motor vehicle exhaust, including an exhaust pipe 1, a fixing assembly 2 is arranged inside the exhaust pipe 1, a clamping assembly 3 is arranged on the top of the fixing assembly 2, the fixing assembly 2 includes a mounting frame 201, a connecting plate 202 is fixedly connected to the outer surface of one side of the mounting frame 201, a first threaded rod 203 is arranged inside the mounting frame 201, one end of the first threaded rod 203 slides through the outer surface of the connecting plate 202 and extends to the other side, and the outer surface of the first threaded rod 203 is threadedly connected to a threaded block 205, rotating blocks 206 are fixedly installed on the outer surfaces of the left and right sides of the threaded block 205, and the interiors of the two rotating blocks 206 are rotatably connected to connecting rods 207 through bearings. The outer surfaces of the connecting rods 207 are rotatably connected to sliding rods 208 through bearings. The outer surface of the sliding rod 208 slides through the inner wall of the mounting frame 201 and extends to the outside. A fixed plate 209 is fixedly connected to the outer surface of one side of the sliding rod 208, and one end of the first threaded rod 203 is fixedly connected to the first knob 204. An anti-slip pad 210 is provided on the outer surface of one side of the fixing plate 209.

[0024] The effect achieved by the entire embodiment 1 is that the first threaded rod 203 is driven to rotate by turning the first knob 204, thereby driving the threaded block 205 to move. When the threaded block 205 moves forward, the connecting rod 207 cooperates to push the sliding rod 208 to move outward. When the fixing plate 209 conflicts with the inner wall of the exhaust pipe 1, the device can be fixed on the inner wall of the exhaust pipe 1. When the fixing plate 209 conflicts with the inner wall of the exhaust pipe 1, the anti-slip pad 210 will first contact the inner wall of the exhaust pipe 1, thereby increasing the friction between the inner wall of the exhaust pipe 1 and improving the firmness. Since the device is fixed on the inner wall of 1, the problem of difficulty in installing the device when the external space of the exhaust rod 1 is narrow can be avoided.

[0025] Embodiment 2, as Figure 1-Figure 4 As shown, the clamping assembly 3 includes a base 301, a guide rod 302 is symmetrically fixedly connected to the top of the base 301 near the right side, a pressure block 303 is slidably arranged between the outer surfaces of the two guide rods 302, a second threaded rod 304 is threaded through the top of the pressure block 303, a second knob 305 is fixedly connected to the top of the second threaded rod 304, a rotating seat 306 is rotatably arranged at the bottom end of the second threaded rod 304, and the rotating seat 306 is fixedly installed on the top of the base 301, an intake pipe 4 is arranged between the base 301 and the pressure block 303, a plurality of intake holes 41 are opened on the outer surface of the intake pipe 4 near the front end, and an exhaust gas detection body 42 is arranged at the rear end of the intake pipe 4.

[0026] The effect achieved by the entire embodiment 2 is that after the device is fixed on the inner wall of the exhaust pipe 1, the exhaust gas enters the exhaust gas detection body 42 through the air inlet hole 41 and the air inlet pipe 4 for detection in turn, and the pressure block 303 is driven to move upward by turning the second knob 305, so that the clamping of the air inlet pipe 4 can be released, making it convenient to remove the exhaust gas detector, and facilitating later maintenance or replacement. It has high practicality. When the pressure block 303 moves up and down, the guide rod 302 passes through the outer surface of the pressure block 303 and slides against each other, which plays a role in limiting and guiding the pressure block 303 and improves stability.

[0027] Working principle: When in use, the first threaded rod 203 is driven to rotate by turning the first knob 204, thereby driving the threaded block 205 to move. When the threaded block 205 moves forward, the connecting rod 207 cooperates to push the sliding rod 208 to move outward. When the fixing plate 209 conflicts with the inner wall of the exhaust pipe 1, the device can be fixed on the inner wall of the exhaust pipe 1. When the fixing plate 209 conflicts with the inner wall of the exhaust pipe 1, the anti-slip pad 210 will first contact with the inner wall of the exhaust pipe 1, thereby increasing the friction between the inner wall of the exhaust pipe 1 and improving the firmness. After the device is fixed to the inner wall of the exhaust pipe 1, the exhaust gas enters the exhaust gas detection body 42 through the air inlet hole 41 and the intake pipe 4 for detection. The second knob 305 is turned to drive the pressing block 303 to move upward, so that the clamping of the intake pipe 4 can be released, which is convenient for removing the exhaust gas detector, facilitating later maintenance or replacement, and has high practicality.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A detection device for motor vehicle exhaust, comprising an exhaust pipe (1), characterized in that: A fixing component (2) is arranged inside the exhaust pipe (1), and a clamping component (3) is arranged on the top of the fixing component (2); The fixing assembly (2) comprises a mounting frame (201), one side outer surface of which is fixedly connected to a connecting plate (202), a first threaded rod (203) is arranged inside the mounting frame (201), one end of the first threaded rod (203) slides through the outer surface of the connecting plate (202) and extends to the other side, a threaded block (205) is threadedly connected to the outer surface of the first threaded rod (203), a rotating block (206) is fixedly installed on the left and right outer surfaces of the threaded block (205), the insides of the two rotating blocks (206) are both rotatably connected to connecting rods (207) via bearings, the outer surfaces of the connecting rods (207) are rotatably connected to sliding rods (208) via bearings, the outer surface of the sliding rod (208) slides through the inner wall of the mounting frame (201) and extends to the outside, and one side outer surface of the sliding rod (208) is fixedly connected to a fixing plate (209).

2. The detection device for motor vehicle exhaust according to claim 1, characterized in that: One end of the first threaded rod (203) is fixedly connected to a first knob (204), and an anti-slip pad (210) is provided on an outer surface of one side of the fixing plate (209).

3. The detection device for motor vehicle exhaust according to claim 1, characterized in that: The clamping assembly (3) comprises a base (301), and a guide rod (302) is symmetrically fixedly connected to a top of the base (301) near the right side.

4. The detection device for motor vehicle exhaust gas according to claim 3, characterized in that: A pressing block (303) is slidably arranged between the outer surfaces of the two guide rods (302).

5. The detection device for motor vehicle exhaust gas according to claim 4, characterized in that: A second threaded rod (304) is provided through the top thread of the pressing block (303), and a second knob (305) is fixedly connected to the top end of the second threaded rod (304).

6. The detection device for motor vehicle exhaust gas according to claim 5, characterized in that: A rotating seat (306) is rotatably provided at the bottom end of the second threaded rod (304), and the rotating seat (306) is fixedly mounted on the top of the base (301).

7. The detection device for motor vehicle exhaust gas according to claim 6, characterized in that: An air intake pipe (4) is arranged between the base (301) and the pressing block (303), a plurality of air intake holes (41) are provided on the outer surface of the air intake pipe (4) near the front end, and an exhaust gas detection body (42) is arranged at the rear end of the air intake pipe (4).

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