Comprehensive test board for nitrogen-oxygen sensor

Abstract

The utility model discloses a comprehensive test board for a nitrogen-oxygen sensor, and relates to the technical field of test boards for nitrogen-oxygen sensors. A comprehensive test board for a nitrogen-oxygen sensor comprises a test cabinet body. According to the utility model, the plurality of mounting blocks are arranged on the test cabinet body, and each mounting block is provided with the positioning assembly, so that a plurality of nitrogen-oxygen sensors can be rapidly tested in batches, the test is convenient, rapid and worry-saving, and the enterprise cost is greatly reduced; a positioning assembly is arranged on the mounting block, so that one end of the nitrogen-oxygen sensor can be conveniently inserted into an insertion test port of the mounting block, and when the nitrogen-oxygen sensor is inserted into the insertion test port, gas in a piston cylinder can be extruded and is blown into a sealing rubber ring from a gas blowing pipe; therefore, the sealing effect between the nitrogen-oxygen sensor and the plugging test port is improved, the leakage of the test medium is avoided, and the test precision of the nitrogen-oxygen sensor is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of nitrogen oxide sensor test benches, and more specifically, relates to a comprehensive test bench for nitrogen oxide sensors. Background Art

[0002] A nitrogen oxide sensor, abbreviated as a NOx sensor, is a sensor used to detect the content of nitrogen oxides (NOx) in the exhaust gas of an engine. It can be classified into an electrochemical type, an optical type, etc. according to the working principle, and is used to monitor and feedback the content of nitrogen oxides in vehicle exhaust gas in real time to meet the vehicle exhaust emission standards.

[0003] Before leaving the factory, a nitrogen oxide sensor needs to pass a quality inspection to detect whether it meets the design requirements and factory requirements. Therefore, existing manufacturers need to design a device that can batch-test nitrogen oxide sensors. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a comprehensive test bench for nitrogen oxide sensors that can overcome or at least partially solve the above problems.

[0005] To solve the above technical problem, the basic concept of the technical solution adopted by the utility model is: a comprehensive test bench for nitrogen oxide sensors, including a test cabinet body, and further including: mounting blocks arranged in a row on the mounting surface of the test cabinet body, the mounting blocks are provided with plug-in test ports, and adjacent mounting blocks are connected by an intake pipe to introduce a test medium into the plug-in test ports; a positioning component arranged above the mounting blocks to position the nitrogen oxide sensor, and when the nitrogen oxide sensor is located on the positioning component and then the nitrogen oxide sensor is moved downward, one end of the nitrogen oxide sensor is inserted into the plug-in test port; a plug-in end provided on the test cabinet body to connect with the plug of the nitrogen oxide sensor.

[0006] Further, a sealing rubber ring is installed on the mounting block, and the nitrogen oxide sensor corresponds to the sealing rubber ring.

[0007] Further, an arc-shaped convex edge is provided on the inner wall of the sealing rubber ring.

[0008] Preferably, the positioning component includes connecting columns symmetrically arranged on both sides of the mounting block, a mounting plate connected to the connecting columns, and an arc-shaped steel sheet connected to the mounting plate. A placement opening is provided on the arc-shaped steel sheet, and the placement opening is concentric with the plug-in test port.

[0009] Further, one side of the arc-shaped steel sheet penetrates through the arc-shaped steel sheet, and a protruding portion is provided on the arc-shaped steel sheet.

[0010] Further, a slot is provided on one side of the mounting plate. An insertion plate is connected in the slot through a pin, and the arc-shaped steel sheet is fixedly connected to the insertion plate.

[0011] Preferably, the positioning assembly includes connectors symmetrically arranged on both sides of the mounting block. The connectors are connected with a mounting plate, a connecting plate is connected between the two mounting plates, and a placement opening is provided on the connecting plate.

[0012] Further, the connector includes a piston cylinder and a piston rod that are slidably connected. The piston cylinder is fixedly connected to the mounting block, the piston rod is connected to the mounting plate, and a blowing pipe is fixedly connected to the piston cylinder. One end of the blowing pipe away from the piston cylinder leads to the sealing rubber ring.

[0013] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art: By providing a plurality of mounting blocks on the test cabinet body of the present utility model, and each mounting block is provided with a positioning assembly, it is possible to batch-test multiple nitrogen-oxygen sensors in a batch and quickly, which is convenient, fast and worry-free, and greatly reduces the enterprise cost; and by providing a positioning assembly on the mounting block, it is convenient for one end of the nitrogen-oxygen sensor to be inserted into the plug-in test port of the mounting block. When the nitrogen-oxygen sensor is inserted into the plug-in test port, the gas in the piston cylinder will be squeezed and blown into the sealing rubber ring from the blowing pipe. Further, when the nitrogen-oxygen sensor enters the sealing rubber ring, it is convenient to clean the inner wall of the sealing rubber ring, thereby improving the sealing effect between the nitrogen-oxygen sensor and the plug-in test port, and further avoiding the leakage of the test medium, effectively improving the test accuracy of the nitrogen-oxygen sensor.

[0014] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0015] In the drawings:

[0016] Figure 1 is a schematic structural diagram of the test cabinet body of a nitrogen-oxygen sensor comprehensive test bench proposed by the present utility model;

[0017] Figure 2 is a nitrogen-oxygen sensor comprehensive test bench proposed by the present utility model Figure 1 The structural diagram of part A therein;

[0018] Figure 3 is a schematic structural diagram of the plug-in end of a nitrogen-oxygen sensor comprehensive test bench proposed by the present utility model;

[0019] Figure 4 is a front view of a nitrogen-oxygen sensor comprehensive test bench proposed by the present utility model;

[0020] Figure 5Schematic diagram of the piston cylinder and piston rod of a comprehensive test bench for nitrogen-oxygen sensors proposed by the present utility model.

[0021] In the figure: 1. Test cabinet; 11. Display screen; 12. Plug-in end; 13. Installation surface; 2. Installation block; 21. Inlet pipe; 22. Plug-in test port; 23. Sealing rubber ring; 231. Arc-shaped convex edge; 24. Connecting column; 25. Installation plate; 26. Slot; 27. Insertion plate; 28. Plug pin; 29. Arc-shaped steel sheet; 291. Placement port; 292. Protrusion; 3. Connector; 31. Piston cylinder; 32. Piston rod; 33. Blowing pipe; 34. Connecting plate. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0023] Embodiment 1: Refer to Figures 1 - 5 , a comprehensive test bench for nitrogen-oxygen sensors, including a test cabinet 1, and further including: installation blocks 2 arranged in an array on the installation surface 13 of the test cabinet 1, a plug-in test port 22 is opened on the installation block 2, and adjacent installation blocks 2 are connected by an inlet pipe 21 to introduce a test medium into the plug-in test port 22; a positioning component is arranged above the installation block 2 to position the nitrogen-oxygen sensor. When the nitrogen-oxygen sensor is located on the positioning component and then the nitrogen-oxygen sensor is moved downward, one end of the nitrogen-oxygen sensor is inserted into the plug-in test port 22; a plug-in end 12 is arranged on the test cabinet 1 to connect with the plug of the nitrogen-oxygen sensor.

[0024] When this device is in use, by inserting the end of the nitrogen-oxygen sensor on the positioning component, and then pushing the nitrogen-oxygen sensor downward, one end of the nitrogen-oxygen sensor enters the plug-in test port 22 of the installation block 2, and the plug on the wire of the nitrogen-oxygen sensor is inserted into the plug-in end 12 for power-on.

[0025] The inlet pipe 21 introduces a test medium into the plug-in test port 22 of the installation block 2. This medium is a gas used to simulate automobile exhaust or a test gas of other mixed components in the experiment. When one end of the nitrogen-oxygen sensor enters the plug-in test port 22, it is used to simulate the test of the usage environment of the nitrogen-oxygen sensor.

[0026] And a plurality of installation blocks 2 are arranged on the test cabinet 1, and a positioning component is arranged on each installation block 2. Therefore, it is possible to batch-test multiple nitrogen-oxygen sensors in a batch and quickly, which is convenient, fast, and worry-free, and greatly reduces the cost of the enterprise.

[0027] A sealing rubber ring 23 is installed on the mounting block 2. The nitrogen oxide sensor corresponds to the sealing rubber ring 23. When one end of the nitrogen oxide sensor enters the plug-in test port 22, the sealing rubber ring 23 can seal between the nitrogen oxide sensor and the plug-in test port 22 to prevent the test medium from leaking out.

[0028] An arc-shaped convex edge 231 is provided on the inner wall of the sealing rubber ring 23. The arc-shaped convex edge 231 protrudes outward on the inner wall of the sealing rubber ring 23. Therefore, after one end of the nitrogen oxide sensor enters the sealing rubber ring 23, the arc-shaped convex edge 231 can further engage with the surface of the nitrogen oxide sensor to further prevent the test medium from leaking out.

[0029] Embodiment 2: Refer to Figure 2 , a comprehensive test bench for nitrogen oxide sensors, which is basically the same as Embodiment 1. Further, the positioning component includes connecting columns 24 symmetrically arranged on both sides of the mounting block 2, a mounting plate 25 connected to the connecting columns 24, and an arc-shaped steel sheet 29 connected to the mounting plate 25. A placement opening 291 is provided on the arc-shaped steel sheet 29, and the placement opening 291 is concentric with the plug-in test port 22;

[0030] In the initial state, the arc top of the arc-shaped steel sheet 29 faces upward. When the nitrogen oxide sensor is placed in the placement opening 291 and the nitrogen oxide sensor is pushed downward, the arc-shaped steel sheet 29 will be forced to bend downward, causing the arc top of the arc-shaped steel sheet 29 to face downward, which is convenient for inserting one end of the nitrogen oxide sensor into the plug-in test port 22.

[0031] One side of the arc-shaped steel sheet 29 penetrates through the arc-shaped steel sheet 29, and a protrusion 292 is provided on the arc-shaped steel sheet 29, which can be used to clamp the nitrogen oxide sensor to prevent it from shaking in the plug-in test port 22.

[0032] A slot 26 is provided on one side of the mounting plate 25. A plug board 27 is connected in the slot 26 through a pin 28, and the arc-shaped steel sheet 29 is fixedly connected to the plug board 27, which is convenient for connecting the plug board 27 and the arc-shaped steel sheet 29.

[0033] Embodiment 3: Refer to Figure 5 , a comprehensive test bench for nitrogen oxide sensors, which is basically the same as Embodiment 1. Further, the positioning component includes connectors 3 symmetrically arranged on both sides of the mounting block 2. An mounting plate 25 is connected to the connectors 3, and a connecting plate 34 is connected between the two mounting plates 25. A placement opening 291 is provided on the connecting plate 34;

[0034] The connector 3 includes a piston cylinder 31 and a piston rod 32 that are slidably connected. The piston cylinder 31 is fixedly connected to the mounting block 2, the piston rod 32 is connected to the mounting plate 25, and a blow pipe 33 is fixedly connected to the piston cylinder 31. One end of the blow pipe 33 away from the piston cylinder 31 leads into the sealing rubber ring 23;

[0035] After the nitrogen-oxygen sensor is placed in the placement port 291, when the nitrogen-oxygen sensor is pressed downward, the piston rod 32 will be pushed to slide in the piston cylinder 31. This causes the piston rod 32 to squeeze the gas in the piston cylinder 31, so that the gas is blown into the sealing rubber ring 23 from the blow pipe 33. Thus, when the nitrogen-oxygen sensor enters the sealing rubber ring 23, it is convenient to clean the inner wall of the sealing rubber ring 23, thereby improving the sealing effect.

[0036] A display screen 11 for displaying test information is installed on the test cabinet 1.

[0037] In the utility model, a plurality of mounting blocks 2 are arranged on the test cabinet 1, and a positioning component is arranged on each mounting block 2. Therefore, a plurality of nitrogen-oxygen sensors can be batch-tested in a batch and quickly, which is convenient, fast and worry-free, and greatly reduces the enterprise cost. And by arranging a positioning component on the mounting block 2, it is convenient for one end of the nitrogen-oxygen sensor to be inserted into the plug-in test port 22 of the mounting block 2. And when the nitrogen-oxygen sensor is inserted into the plug-in test port 22, the gas in the piston cylinder 31 will be squeezed and blown into the sealing rubber ring 23 from the blow pipe 33. Thus, when the nitrogen-oxygen sensor enters the sealing rubber ring 23, it is convenient to clean the inner wall of the sealing rubber ring 23, thereby improving the sealing effect between the nitrogen-oxygen sensor and the plug-in test port 22, and thus avoiding the leakage of the test medium and effectively improving the test accuracy of the nitrogen-oxygen sensor.

[0038] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications into equivalent embodiments by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. An integrated test bench for nitrogen oxide sensors, comprising a test cabinet body (1), characterized in that, Further included are: Mounting blocks (2) arranged and installed on the mounting surface (13) of the test cabinet body (1). A plug-in test port (22) is formed on the mounting block (2). Adjacent mounting blocks (2) are connected by an air inlet pipe (21) to introduce a test medium into the plug-in test port (22). A positioning component is arranged above the mounting block (2) to position the nitrogen oxide sensor. After the nitrogen oxide sensor is located on the positioning component, when the nitrogen oxide sensor is moved downward, one end of the nitrogen oxide sensor is inserted into the plug-in test port (22). A plug-in end (12) is arranged on the test cabinet body (1) to be connected to the plug of the nitrogen oxide sensor.

2. The integrated test bench for a nitrogen-oxygen sensor according to claim 1, characterized in that, A sealing rubber ring (23) is installed on the mounting block (2), and the nitrogen oxide sensor corresponds to the sealing rubber ring (23).

3. The integrated test bench for nitrogen oxide sensors according to claim 2, characterized in that, An arc-shaped convex edge (231) is arranged on the inner wall of the sealing rubber ring (23).

4. The integrated test bench for a nitrogen-oxygen sensor according to claim 3, wherein, The positioning component includes connecting columns (24) symmetrically arranged on both sides of the mounting block (2), a mounting plate (25) connected to the connecting columns (24), and an arc-shaped steel sheet (29) connected to the mounting plate (25). A placement opening (291) is formed on the arc-shaped steel sheet (29), and the placement opening (291) is concentric with the plug-in test port (22).

5. The integrated test bench for a nitrogen-oxygen sensor according to claim 4, characterized in that, One side of the arc-shaped steel sheet (29) penetrates through the arc-shaped steel sheet (29), and a protruding portion (292) is arranged on the arc-shaped steel sheet (29).

6. The integrated test bench for nitrogen oxide sensors according to claim 5, characterized in that, A slot (26) is formed on one side of the mounting plate (25). A plug board (27) is connected in the slot (26) through a pin (28), and the arc-shaped steel sheet (29) is fixedly connected to the plug board (27).

7. The integrated test bench for a nitrogen-oxygen sensor according to claim 3, characterized in that, The positioning component includes connectors (3) symmetrically arranged on both sides of the mounting block (2). A mounting plate (25) is connected to the connector (3). A connecting plate (34) is connected between the two mounting plates (25), and a placement opening (291) is formed on the connecting plate (34).

8. The integrated test bench for a nitrogen-oxygen sensor according to claim 7, characterized in that, The connector (3) includes a piston cylinder (31) and a piston rod (32) that are slidably connected. The piston cylinder (31) is fixedly connected to the mounting block (2), the piston rod (32) is connected to the mounting plate (25), and a blowing pipe (33) is fixedly connected to the piston cylinder (31). One end of the blowing pipe (33) away from the piston cylinder (31) leads to the sealing rubber ring (23).

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