Motor vehicle tail gas collecting and detecting equipment

Abstract

The utility model relates to the technical field of detection equipment, in particular to motor vehicle tail gas collection and detection equipment which comprises a tail gas detector and an extension hose, a runner pipe assembly is fixedly connected to one side of the extension hose, a fixing assembly is installed on the outer side of the runner pipe assembly, and the runner pipe assembly comprises a grip. The fixing assembly comprises a pull handle, a straight rod is fixedly connected to the left side of the pull handle, an extending block is fixedly connected to the left side of the straight rod, a moving cylinder is fixedly connected to one side of the extending block, an embedding hole is formed in the inner side of the moving cylinder, and a rubber sealing ring is fixedly connected to the inner side of the embedding hole. According to the tail gas detection device disclosed by the utility model, the inner wall of the exhaust pipe is prevented from being scratched through expansion type fixation, the tail gas detection device is suitable for various exhaust pipes, the loss is reduced, and a safe, reliable and economical tail gas detection scheme is provided.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a vehicle exhaust gas collection and testing equipment. Background Technology

[0002] Motor vehicle exhaust emission collection and testing equipment is a device specifically designed for collecting and testing motor vehicle exhaust emissions. It typically consists of two parts: an exhaust emission collection system and a testing system. The exhaust emission collection system introduces motor vehicle exhaust into the testing equipment through a dedicated probe or pipe. The testing system utilizes various sensors and analytical instruments, such as chemiluminescence and infrared absorption methods, to perform rapid and accurate quantitative analysis of the pollutant components in the exhaust. This allows the system to determine whether the motor vehicle exhaust emissions meet national or local emission standards, thus providing crucial data support for motor vehicle environmental testing, maintenance, and air pollution control.

[0003] In motor vehicle exhaust emission testing equipment, existing technology incorporates elastic support plates on the outside of the testing pipe to reduce the workload of testing personnel. While these elastic support plates provide stability to the testing pipe, they present some problems in practical use. Due to the elastic properties of the support plates, when the testing pipe is pulled out of the car's exhaust pipe, the support plates rub against the inner wall of the exhaust pipe under the action of elastic force, easily causing scratches. These scratches not only affect the appearance of the exhaust pipe but may also damage its internal structure, thus affecting its normal use and causing certain economic losses to the car owner. Therefore, a motor vehicle exhaust emission collection and testing device is proposed to address the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a motor vehicle exhaust gas collection and detection device to solve the problem that, due to the elastic characteristics of the elastic support sheet, when the detection pipe is pulled out of the car exhaust pipe, the elastic support sheet will rub against the inner wall of the exhaust pipe under the action of elastic force, which can easily cause scratches to the car exhaust pipe. Such scratches not only affect the appearance of the exhaust pipe, but may also damage the internal structure of the exhaust pipe.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A motor vehicle exhaust gas collection and testing device includes an exhaust gas detector and an extension hose. A flow pipe assembly is fixedly connected to one side of the extension hose. A fixing assembly is installed on the outside of the flow pipe assembly. The flow pipe assembly includes a handle. A rigid pipe is fixedly connected to the left side of the handle. A fixing ring is fixedly connected to the outside of the rigid pipe. A guide sliding hole is opened on the inner side of the fixing ring. The fixing assembly includes a pull handle. A straight rod is fixedly connected to the left side of the pull handle. An extension block is fixedly connected to the left side of the straight rod. A movable cylinder is fixedly connected to one side of the extension block. An insert hole is opened on the inner side of the movable cylinder. A rubber sealing ring is fixedly connected to the inner side of the insert hole. A spring is fixedly connected to the right side of the movable cylinder. A sealing airbag is fixedly connected to the outside of the movable cylinder. The inner side of the sealing airbag near its left end is fixedly connected to the outside of the rigid pipe.

[0007] As a further optimization of this utility model, the following features are provided: a soft insertion tube is fixedly connected to the left side of the rigid tube; the inner sides of the handle, the rigid tube, and the soft insertion tube are all hollow; and the inner sides of the handle, the rigid tube, and the soft insertion tube are all interconnected.

[0008] As a further optimization of this utility model, a wear-resistant rubber ring is fixedly connected to the outer side of the sealing airbag, and the inner side of the sealing airbag is a hollow structure.

[0009] As a further optimization of this utility model, the movable cylinder is fitted onto the outside of the rigid tube through the mounting hole, the inner side of the rubber sealing ring is in contact with the outer side of the rigid tube, and a gap is provided between the right side of the movable cylinder and the left side of the fixing ring.

[0010] As a further optimization of this utility model, the guide sliding hole extends through the interior of the fixing ring on both sides, a protrusion is provided on the outer side of the fixing ring, and the straight rod slides on the inner side of the guide sliding hole.

[0011] As a further optimization of this utility model, the following features are provided: the number of extension blocks is the same as the number of straight rods; the handle is located at the right end of the fixing ring; a gap is provided between the handle and the fixing ring; and the handle is sleeved on the outside of the straight rod.

[0012] As a further optimization of this utility model, the spring is sleeved on the outside of the rigid tube, the right end of the spring is fixedly connected to the left side of the fixing ring, and the spring is located between multiple straight rods.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, the device effectively solves the problem of scratching the inner wall of the car exhaust pipe when the traditional elastic support plate is pulled out by setting the flow pipe assembly and fixing assembly. When the device is fixed inside the exhaust pipe, it achieves stable fixation through its own expansion, avoiding frictional damage to the inner wall of the exhaust pipe and protecting the structural integrity of the exhaust pipe. At the same time, this fixing method is adaptable to various sizes and shapes of motor vehicle exhaust pipes, improving the versatility and practicality of the device, reducing economic losses caused by exhaust pipe damage, and providing a safer, more reliable and economical solution for motor vehicle exhaust emission testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the flow tube assembly structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the flexible cannula structure of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the fixing component of this utility model;

[0019] Figure 5 This is an exploded structural diagram of the fixing component of this utility model;

[0020] Figure 6 This utility model Figure 5 A schematic diagram of the structure at point A;

[0021] Figure 7 This is a schematic diagram of the sealing airbag structure of this utility model;

[0022] Figure 8 This is a schematic diagram of the movable cylinder structure of this utility model.

[0023] In the picture: 1. Exhaust gas detector; 2. Extension hose;

[0024] 3. Flow tube assembly; 31. Handle; 32. Rigid tube; 33. Flexible insertion tube; 34. Retaining ring; 35. Guide slide hole;

[0025] 4. Fixing components; 41. Pull handle; 42. Straight rod; 43. Moving cylinder; 44. Extension block; 45. Mounting hole; 46. Rubber sealing ring; 47. Spring; 48. Sealing airbag; 49. Wear-resistant rubber ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Please see Figures 1-8 This utility model provides a technical solution:

[0029] The vehicle exhaust gas collection and testing equipment includes an exhaust gas detector 1 and an extension hose 2. A flow pipe assembly 3 is fixedly connected to one side of the extension hose 2. A fixing assembly 4 is installed on the outside of the flow pipe assembly 3. The flow pipe assembly 3 includes a handle 31. A rigid pipe 32 is fixedly connected to the left side of the handle 31. A fixing ring 34 is fixedly connected to the outside of the rigid pipe 32. A guide sliding hole 35 is opened on the inner side of the fixing ring 34. The fixing assembly 4 includes a pull handle 41. A straight rod 42 is fixedly connected to the left side of the pull handle 41. An extension block 44 is fixedly connected to the left side of the straight rod 42. A movable cylinder 43 is fixedly connected to one side of the extension block 44. An insert hole 45 is opened on the inner side of the movable cylinder 43. A rubber sealing ring 46 is fixedly connected to the inner side of the insert hole 45. A spring 47 is fixedly connected to the right side of the movable cylinder 43. A sealing airbag 48 is fixedly connected to the outside of the movable cylinder 43. The inner side of the sealing airbag 48 near the left end is fixedly connected to the outside of the rigid pipe 32.

[0030] As a further implementation of this solution, a flexible tube 33 is fixedly connected to the left side of the rigid tube 32. The inner sides of the handle 31, the rigid tube 32 and the flexible tube 33 are all hollow, and the inner sides of the handle 31, the rigid tube 32 and the flexible tube 33 are all interconnected. Through the above settings, a channel is provided for the smooth flow of exhaust gas, ensuring that the exhaust gas can smoothly enter the inside of the testing equipment from the exhaust pipe.

[0031] As a further implementation of this solution, a wear-resistant rubber ring 49 is fixedly connected to the outside of the sealing airbag 48, and the inside of the sealing airbag 48 is a hollow structure. Through the above arrangement, the sealing airbag 48 can drive the wear-resistant rubber ring 49 to expand together when it expands, thereby tightly adhering to the inner wall of the exhaust pipe and providing a stable fixing force. This design not only enhances the friction between the device and the exhaust pipe, but also protects the inner wall of the exhaust pipe from scratches, thereby improving the reliability and service life of the device.

[0032] As a further implementation of this solution, the movable cylinder 43 is fitted onto the outside of the rigid tube 32 through the mounting hole 45, the inner side of the rubber sealing ring 46 is in contact with the outer side of the rigid tube 32, a gap is provided between the right side of the movable cylinder 43 and the left side of the fixed ring 34, the guide sliding hole 35 passes through the inside of the fixed ring 34 on both sides, a protrusion is provided on the outer side of the fixed ring 34, and the straight rod 42 slides on the inner side of the guide sliding hole 35. Through the above settings, a stable guide and space are provided for the movement of the movable cylinder 43. This design ensures the stability and accuracy of the movable cylinder 43 during the movement process, reduces friction and wear between components, and improves the stability and durability of the device.

[0033] As a further implementation of this solution, the number of extension blocks 44 is the same as the number of straight rods 42. The handle 41 is located at the right end of the fixing ring 34, and there is a gap between the handle 41 and the fixing ring 34. The handle 41 is sleeved on the outside of the straight rod 42. Through the above arrangement, the handle 41 can drive the straight rod 42 and the moving cylinder 43 to move, realizing the expansion and contraction function of the device. This design improves the flexibility and adaptability of the device, enabling it to adapt to exhaust pipes of different sizes and enhancing the versatility of the device.

[0034] As a further implementation of this solution, spring 47 is sleeved on the outside of rigid tube 32, and the right end of spring 47 is fixedly connected to the left side of fixing ring 34. Spring 47 is located between multiple straight rods 42. Through the above arrangement, the elastic thrust of spring 47 can push moving cylinder 43 towards sealing airbag 48, realizing the expansion of sealing airbag 48, thereby tightly adhering to the inner wall of exhaust pipe. This design improves the fixing stability of the device.

[0035] Workflow: When collecting and testing vehicle exhaust gases, first hold the handle 31 with one hand and pull the pull handle 41 with the other. The pull handle 41 moves the straight rod 42 and the moving cylinder 43 towards the handle 31. The moving cylinder 43 slides on the outside of the rigid pipe 32, and the straight rod 42 slides on the inside of the guide hole 35. The design of the straight rod 42 and the guide hole 35 improves the stability of the moving cylinder 43 during movement and prevents the moving cylinder 43 and the sealing airbag 48 from twisting on the outside of the rigid pipe 32. To maintain the uniformity of the surface of the airbag 48 after impact, after the moving cylinder 43 moves, the airbag 48 extends to the right, increasing its length and narrowing its diameter. The flexible tube 33 is then inserted into the exhaust pipe of the vehicle, partially inserting the airbag 48 into the exhaust pipe. Releasing the pull handle 41, under the elastic force of the spring 47, pushes the moving cylinder 43 towards the airbag 48. The rubber sealing ring 46 acts as a counterweight. The sealing effect between the moving cylinder 43 and the rigid pipe 32 allows the sealing airbag 48 to expand, which in turn causes the wear-resistant rubber ring 49 to expand. The wear-resistant rubber ring 49 and the sealing airbag 48 will then be tightly attached to the inside of the exhaust pipe. The wear-resistant rubber ring 49 increases the friction between the device and the exhaust pipe, thereby improving the stability of the device fixed inside the exhaust pipe. At this point, the device is fixed to the engine exhaust pipe. When the vehicle starts, the exhaust gas will enter the interior of the flexible tube 33 through the interior of the exhaust pipe, and then enter the interior of the exhaust gas detector 1 through the flexible tube 33, the rigid pipe 32, the handle 31, and the extension hose 2, thus realizing the detection of exhaust gas. Based on the above principles, when the device is fixed to the vehicle exhaust pipe, the expansion of the device itself achieves the fixing effect. This fixing method not only prevents damage to the inner wall of the exhaust pipe, but also adapts to the fixing of various vehicle exhaust pipes, improving practicality.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor vehicle exhaust gas collection and detection device, comprising an exhaust gas detector (1) and an extension hose (2), characterized in that: The extension hose (2) is fixedly connected to one side of a flow tube assembly (3), and a fixing assembly (4) is installed on the outside of the flow tube assembly (3). The flow tube assembly (3) includes a handle (31), a rigid tube (32) is fixedly connected to the left side of the handle (31), a fixing ring (34) is fixedly connected to the outside of the rigid tube (32), and a guide sliding hole (35) is opened on the inner side of the fixing ring (34). The fixing component (4) includes a handle (41), a straight rod (42) is fixedly connected to the left side of the handle (41), an extension block (44) is fixedly connected to the left side of the straight rod (42), a movable cylinder (43) is fixedly connected to one side of the extension block (44), an insert hole (45) is provided on the inner side of the movable cylinder (43), a rubber sealing ring (46) is fixedly connected to the inner side of the insert hole (45), a spring (47) is fixedly connected to the right side of the movable cylinder (43), and a sealing airbag (48) is fixedly connected to the outer side of the movable cylinder (43). The inner side of the sealing airbag (48) near the left end is fixedly connected to the outer side of the rigid tube (32).

2. The motor vehicle exhaust gas collection and detection device according to claim 1, characterized in that: A soft tube (33) is fixedly connected to the left side of the rigid tube (32). The inner sides of the handle (31), the rigid tube (32) and the soft tube (33) are all hollow, and the inner sides of the handle (31), the rigid tube (32) and the soft tube (33) are all interconnected.

3. The motor vehicle exhaust gas collection and detection device according to claim 1, characterized in that: The outer side of the sealing airbag (48) is fixedly connected with a wear-resistant rubber ring (49), and the inner side of the sealing airbag (48) is a hollow structure.

4. The motor vehicle exhaust gas collection and detection device according to claim 1, characterized in that: The movable cylinder (43) is fitted onto the outside of the rigid tube (32) through the mounting hole (45), the inner side of the rubber sealing ring (46) is in contact with the outer side of the rigid tube (32), and a gap is provided between the right side of the movable cylinder (43) and the left side of the fixing ring (34).

5. The motor vehicle exhaust gas collection and detection device according to claim 1, characterized in that: The guide hole (35) passes through the interior of the fixing ring (34) from left to right. The fixing ring (34) has a protrusion on the outside. The straight rod (42) slides on the inside of the guide hole (35).

6. The motor vehicle exhaust gas collection and detection device according to claim 1, characterized in that: The number of extension blocks (44) is the same as the number of straight rods (42). The handle (41) is located at the right end of the fixing ring (34). There is a gap between the handle (41) and the fixing ring (34). The handle (41) is sleeved on the outside of the straight rod (42).

7. The motor vehicle exhaust gas collection and detection device according to claim 1, characterized in that: The spring (47) is sleeved on the outside of the rigid tube (32), and the right end of the spring (47) is fixedly connected to the left side of the fixing ring (34). The spring (47) is located between a plurality of straight rods (42).

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