A diesel nozzle detection fixture facilitating full angle observation

Abstract

The utility model discloses a diesel nozzle detection clamp convenient to full angle observation, including base, swing platform and nozzle chuck. The base is equipped with arc waist hole, and one end of swing platform is hinged to the base, and the other end is fixed angle through the close -fitting bolt of arc waist hole, nozzle chuck can rotate and be equipped in swing platform, is used for clamping diesel nozzle. Swing platform is fan -shaped, and its side surface is equipped with shaft hole, and nozzle chuck can rotate and be assembled in shaft hole, and can choose and install in two communicating shaft holes. Nozzle chuck has the bearing hole of adaptation nozzle, and the hole is communicated with shaft hole through air hole, and the balance air pressure is convenient to assemble and disassemble. The exposed part of chuck is equipped with antiskid structure, avoids touching nozzle and causes pollution, realizes 0 180 degrees multi -angle fixed and around self axis rotation observation, and improves detection efficiency and accuracy.

Description

Technical Field

[0001] This solution relates to the field of tooling and fixtures, specifically a diesel nozzle inspection fixture that facilitates observation from all angles. Background Technology

[0002] The diesel nozzle inside the diesel engine is responsible for injecting diesel fuel into the cylinder at high pressure, where it mixes thoroughly with air and burns to generate energy. Its spray characteristics, including atomization particle size, oil mist distribution, oil jet direction, range, and diffusion cone angle, play a key role in the combustion efficiency, power output, and exhaust emissions of the diesel engine.

[0003] The diesel nozzle itself is very small, with a diameter of about 3mm. In order to ensure the processing quality, it is often necessary to observe the nozzle from all angles under a high-powered microscope during the processing of the nozzle. This requires a fixture that can fix the fuel injector at any angle and continue to rotate along its own axis at that angle.

[0004] Existing tooling is mostly fixed at a fixed angle, and adjusting the angle often requires touching the nozzle itself, leading to nozzle contamination. In addition, the workpiece is prone to displacement during inspection or observation, resulting in inconsistent observation. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a diesel nozzle testing fixture that facilitates observation from all angles.

[0006] The specific technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A diesel nozzle testing fixture that facilitates omnidirectional observation is characterized by comprising a base, a swing platform, and a nozzle chuck. The base has an arc-shaped waist hole. One end of the swing platform is hinged to the base, and the other end of the swing platform has a threaded hole. A set bolt passes through the arc-shaped waist hole and is threaded into the threaded hole to fix the swing platform at a certain angle. The nozzle chuck is rotatably mounted on the swing platform and is used to hold and support the diesel nozzle to be tested.

[0008] The swing stage is designed to swing around a hinge point on the base. The curved bore provides multiple fixing positions for the set bolt, allowing the operator to lock the swing stage at any desired angle, facilitating observation of the diesel nozzle at any angle between 0 and 180 degrees. Furthermore, the nozzle chuck employs a rotatable connection, ensuring that the clamped diesel nozzle can rotate freely along its own axis at a fixed angle, facilitating detailed observation of different parts. The entire fixture is simple in structure and easy to operate, significantly improving the efficiency and accuracy of diesel nozzle inspection and observation.

[0009] Furthermore, the swing platform has a fan-shaped cross-section, including two fan surfaces, an arc surface, and two side surfaces, with one end near the center of the fan shape hinged to the base.

[0010] This design not only enhances the stability of the swing platform but also allows it to swing more smoothly on the base. The fan-shaped structure ensures that the swing platform is evenly stressed during swing, preventing the tooling itself from becoming unbalanced due to excessive swing angle.

[0011] Furthermore, the nozzle chuck is disposed on one of the two sides.

[0012] Furthermore, the swing platform is provided with a shaft hole, and the nozzle chuck is rotatably disposed within the shaft hole. The nozzle chuck and the shaft hole are assembled with a clearance fit, eliminating the need for additional rotating parts such as bearings, resulting in a simple structure and convenient replacement.

[0013] Furthermore, the nozzle chuck is equipped with an anti-slip structure on the circumferential portion outside the shaft hole. This design not only enables observation at all angles but also prevents direct contact with the diesel nozzle when adjusting the angle, effectively preventing nozzle contamination.

[0014] Furthermore, each of the two sides of the swing platform is provided with a shaft hole, and the nozzle chuck is adjustablely disposed in either shaft hole.

[0015] This design provides users with greater flexibility, allowing them to select the appropriate shaft hole to install the nozzle chuck according to actual needs. Meanwhile, the two shaft holes on the swing platform are rationally arranged, ensuring stable swing and angle adjustment regardless of which shaft hole the nozzle chuck is installed in, further improving inspection efficiency and accuracy. Furthermore, it allows for the use of two nozzle chucks, enabling the next nozzle to be inspected to be pre-assembled onto the nozzle chuck during the inspection of the previous one, facilitating rapid switching and increasing inspection speed.

[0016] Furthermore, the nozzle chuck is provided with a bearing hole that matches the outer contour of the diesel nozzle to be tested. The diesel nozzle and the bearing hole are fitted with a clearance, making installation and removal simple.

[0017] Furthermore, the bearing hole is provided with a vent hole.

[0018] The vent hole is designed to maintain airflow for the diesel nozzle during installation, effectively balancing the air pressure inside and outside the bearing hole. This makes installation and removal of the diesel nozzle smoother and reduces inconvenience caused by pressure differences. Furthermore, the vent hole also serves as a cleaning channel, facilitating cleaning and maintenance of the bearing hole when necessary, ensuring the continued stability and accuracy of the testing fixture.

[0019] Furthermore, the two shaft holes are interconnected, and the vent hole is connected to the shaft hole.

[0020] Because the diesel nozzle and the bearing hole are clearance-fitted, with a very small gap between them, maintaining a balance of internal and external air pressure is essential for smooth installation and removal. The interconnected shaft hole design creates an airflow path between the vent hole and the shaft hole. When the diesel nozzle is installed in the bearing hole, air inside the bearing hole can be discharged through the vent hole, preventing air blockage that could hinder nozzle assembly. Simultaneously, when removing the diesel nozzle, gas can be quickly replenished through the shaft hole on the other side, avoiding negative pressure created in the bearing hole during nozzle removal that could cause removal difficulties. This further enhances the air pressure balance during installation and disassembly. Attached Figure Description

[0021] Figure 1 This is a first-view schematic diagram of the detection fixture of this utility model;

[0022] Figure 2 This is a second-view schematic diagram of the detection fixture of this utility model;

[0023] Figure 3 This is a schematic diagram of the diesel nozzle that the testing fixture of this utility model needs to hold;

[0024] Figure 4 A three-dimensional cross-sectional view of the testing fixture of this utility model after a diesel nozzle has been installed.

[0025] Figure 5 This is a three-dimensional schematic diagram of the testing fixture of this utility model after a diesel nozzle has been installed.

[0026] The following is a list of component names represented by the reference numerals in the attached diagram:

[0027] 1. Base; 2. Swinging platform; 3. Nozzle chuck; 4. Waist-shaped hole; 5. Set bolt; 6. Diesel nozzle; 7. Fan-shaped surface; 8. Arc-shaped surface; 9. Side surface; 10. Shaft hole; 11. Anti-slip structure; 12. Bearing hole; 13. Vent hole; 14. Hinge shaft. Detailed Implementation

[0028] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] refer to Figure 1 and Figure 2A diesel nozzle testing fixture for convenient all-around observation includes a base 1, a swing platform 2, and a nozzle chuck 3. The base 1 has an arc-shaped waist-shaped hole 4. One end of the swing platform 2 is hinged to the base 1 via a hinge shaft 14, and the other end has a screw hole. A set bolt 5 passes through the arc-shaped waist-shaped hole 4 and is threaded into the screw hole to fix the swing platform 2 at a specific angle. The nozzle chuck 3 is rotatably mounted on the swing platform 2 to hold the diesel nozzle 6 to be tested.

[0030] The cross-section of the swing stage 2 is fan-shaped, as shown below. Figure 5 As shown, it includes two fan-shaped surfaces 7, an arc surface 8, and two side surfaces 9, with one end near the center of the fan-shaped surface hinged to the base 1.

[0031] The nozzle chuck 3 is mounted on one of the two sides 9.

[0032] The swing platform 2 is provided with a shaft hole 10, and the nozzle chuck 3 is rotatably installed in the shaft hole 10.

[0033] The nozzle chuck 3 is provided with an anti-slip structure 11 on the circumferential part outside the shaft hole 10. In this example, the anti-slip structure is knurled.

[0034] like Figure 4 As shown, a shaft hole 10 is provided on each of the two sides 9 of the swing platform 2. Figure 4 In the middle, the nozzle chuck 3 is set in the shaft hole on the left side), and the nozzle chuck 3 can be installed in any shaft hole 10.

[0035] like Figure 2 As shown, the nozzle chuck 3 has a bearing hole 12 that matches the outer contour of the diesel nozzle 6 to be tested. Figure 4 As can be seen, a vent hole 13 is provided inside the bearing hole 12. The two shaft holes 10 are interconnected, and the vent hole 13 is connected to the shaft hole 10.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A diesel nozzle testing fixture that facilitates observation from all angles, characterized in that, The device includes a base, a swing platform, and a nozzle chuck. The base has an arc-shaped waist hole. One end of the swing platform is hinged to the base, and the other end of the swing platform has a screw hole. A set bolt passes through the arc-shaped waist hole and is threaded into the screw hole to fix the swing platform at a certain angle. The nozzle chuck is rotatably mounted on the swing platform and is used to hold and carry the diesel nozzle to be tested.

2. The diesel nozzle testing fixture for easy observation from all angles as described in claim 1, characterized in that, The swing platform has a fan-shaped cross-section, including two fan surfaces, an arc surface, and two side surfaces, with one end near the center of the fan shape hinged to the base.

3. The diesel nozzle inspection fixture for easy observation from all angles as described in claim 2, characterized in that, The nozzle chuck is located on one of the two sides.

4. The diesel nozzle testing fixture for easy observation from all angles according to any one of claims 1-3, characterized in that, The swing platform is provided with a shaft hole, and the nozzle chuck is rotatably disposed in the shaft hole.

5. The diesel nozzle inspection fixture for easy observation from all angles as described in claim 4, characterized in that, The nozzle chuck has an anti-slip structure on the circumferential part located outside the shaft hole.

6. The diesel nozzle inspection fixture for easy observation from all angles as described in claim 4, characterized in that, The swing platform has a shaft hole on each of its two sides, and the nozzle chuck is adjustablely positioned in either shaft hole.

7. The diesel nozzle inspection fixture for easy observation from all angles as described in claim 6, characterized in that, The nozzle chuck is provided with a bearing hole that matches the outer contour of the diesel nozzle to be tested.

8. The diesel nozzle testing fixture for easy observation from all angles as described in claim 7, characterized in that, The bearing hole is provided with a vent hole.

9. The diesel nozzle testing fixture for easy observation from all angles as described in claim 8, characterized in that, The two shaft holes are interconnected, and the vent hole is connected to the shaft hole.

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