A measuring tool for measuring the depth of the oil groove of a fuel valve

Abstract

The utility model relates to a kind of measuring oil nozzle oil tank depth's testing fixture including frame, measuring rod and dial indicator. The measuring hook of the arc contact surface matched with the arc segment of oil tank set in the end of measuring rod is inserted into the axial hole of oil nozzle needle valve body and directly contacts the specified measuring point of oil tank, and the parallel abutting structure of the stopper vertically set with the measuring end of dial indicator and the end surface of oil nozzle needle valve body, the measuring end of dial indicator is displaced due to axial pressure, the depth of oil tank can be directly obtained by reading the displacement value shown on dial indicator, the repeatability and accuracy of measurement result are improved, the product quality is guaranteed to meet drawing requirements, and detection efficiency and process consistency are improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing technology, and in particular to a gauge for measuring the depth of the oil reservoir in an oil nozzle. Background Technology

[0002] During the processing and inspection of the needle valve body, the oil reservoir is located inside the axial hole of the needle valve body and its inner wall is a circular arc structure. Traditional measuring tools cannot directly and stably contact the designated measuring point at the bottom of the reservoir, resulting in poor repeatability and low accuracy of the measurement results, which in turn affects product quality and process consistency.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a gauge for measuring the depth of the oil reservoir in an oil nozzle. This addresses the problem that traditional measuring tools cannot directly and stably contact the designated measuring point at the bottom of the reservoir when the oil reservoir is located inside the axial hole of the needle valve body and its inner wall is an arc segment structure. This results in poor repeatability and low accuracy of the measurement results, which in turn affects product quality and process consistency.

[0005] The technical solution adopted in this utility model is as follows: A gauge for measuring the depth of the oil reservoir in a nozzle needle valve body is provided. The nozzle needle valve body has an axial hole on its left side, and an oil reservoir is formed within the axial hole. The inner wall of the oil reservoir is an arc segment. The gauge for measuring the depth of the oil reservoir includes: The frame includes vertical panels and a base plate that are perpendicularly connected to each other; A dial indicator is vertically fixed to the upright plate. The measuring end of the dial indicator passes through the upright plate. A stop is vertically provided on the measuring end of the dial indicator. The left end face of the nozzle needle valve body is parallel to and abuts against the right end face of the stop. A measuring rod is vertically mounted on the upright plate and located below the measuring end of the dial indicator. The end of the measuring rod is provided with an upwardly bent measuring hook. The upper surface of the measuring hook is an arc-shaped contact surface that matches the arc segment. The measuring rod is partially inserted into the axial hole of the nozzle needle valve body, and the measuring hook is positioned in the oil reservoir.

[0006] A further technical solution is that the upright plate has a through hole along its length and a first threaded hole along its height. The first threaded hole communicates with the through hole. A clamping ring is provided inside the through hole. A clamping screw is provided at the top of the upright plate. The clamping screw is threaded into the first threaded hole and the bottom end of the clamping screw abuts against the clamping ring. The measuring end of the dial indicator passes through the clamping ring, and the clamping ring clamps the dial indicator.

[0007] A further technical solution is that the measuring end of the dial indicator is provided with a second threaded hole in the axial direction, and a threaded post is provided vertically on the left side of the stop block, and the threaded post is threadedly connected to the second threaded hole.

[0008] A further technical solution is that the radius of the contact end between the oil tank and the top of the measuring hook is 5.5mm.

[0009] A further technical solution is that the height of the measuring hook is 2.75mm.

[0010] A further technical solution is that the right end face of the stop is provided with a wear-resistant hard alloy layer.

[0011] A further technical solution is that the surface of the measuring hook is provided with a wear-resistant ceramic coating.

[0012] A further technical solution is that the right side of the bottom end of the upright plate is connected to the left side of the base plate by bolts.

[0013] The beneficial effects of this utility model embodiment are as follows: (i) A gauge for measuring the depth of the oil reservoir in an oil nozzle includes a frame, a measuring rod, and a dial indicator. A measuring hook with an arc-shaped contact surface at the end of the measuring rod, matching the arc segment of the oil reservoir, extends into the axial hole of the oil nozzle needle valve body and directly contacts a designated measuring point in the oil reservoir. With the aid of a stop block vertically positioned at the measuring end of the dial indicator and a parallel contact structure with the end face of the oil nozzle needle valve body, the measuring end of the dial indicator is displaced due to axial pressure. The depth of the oil reservoir can be directly obtained by reading the displacement value displayed on the dial indicator, improving the repeatability and accuracy of the measurement results, ensuring that product quality meets drawing requirements, and enhancing inspection efficiency and process consistency.

[0014] (ii) Furthermore, the upright plate has a through hole along its length and a first threaded hole along its height, which connects to the through hole. A clamping ring is installed inside the through hole, and a clamping screw is installed at the top of the upright plate. The clamping screw is threaded into the first threaded hole, and its bottom end abuts against the clamping ring. The measuring end of the dial indicator passes through the clamping ring, which clamps the dial indicator. By tightening the clamping screw, the clamping ring is pushed to retract radially, thereby firmly clamping the measuring rod of the dial indicator. This ensures that the dial indicator remains vertically stable during measurement, avoiding measurement errors caused by instrument shaking. At the same time, the clamping ring facilitates the quick installation and calibration of the dial indicator, improving the repeatability and ease of use of the gauge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the nozzle needle valve body in a gauge for measuring the depth of the oil reservoir of a nozzle according to this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of a gauge for measuring the depth of the oil reservoir in an oil nozzle, according to this utility model.

[0017] Figure 3 This is a front view schematic diagram of the measuring hook in a gauge for measuring the depth of an oil nozzle's oil reservoir according to this utility model.

[0018] In the picture: 100. Needle valve body; 101. Axial hole; 102. Oil reservoir; 103. Arc segment; 200. Frame; 210. Vertical plate; 211. Through hole; 212. First threaded hole; 213. Clamping ring; 214. Clamping screw; 220. Base plate; 230. Bolt; 300. Measuring rod; 301. Measuring hook; 302. Arc-shaped contact surface; 400. Dial indicator; 401. Stop block; 402. Second threaded hole; 403. Threaded post. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] First embodiment: like Figure 1 As shown, a gauge for measuring the depth of the oil reservoir in a nozzle is used in a nozzle needle valve body 100. An axial hole 101 is axially formed on the left side of the nozzle needle valve body 100, and an oil reservoir 102 is formed within the axial hole 101. The inner wall of the oil reservoir 102 is an arc segment 103. For example, the radius of the contact end between the oil reservoir 102 and the top of the measuring hook 301 is 5.5 mm. The gauge for measuring the depth of the oil reservoir in a nozzle includes a frame 200, a measuring rod 300, and a dial indicator 400.

[0021] like Figure 2 As shown, the frame 200 includes a vertical plate 210 and a base plate 220 that are perpendicularly connected to each other. For example, the right side of the bottom end of the vertical plate 210 is connected to the left side of the base plate 220 by bolts 230.

[0022] like Figure 2 As shown, the dial indicator 400 is vertically fixed on the upright plate 210. The measuring end of the dial indicator 400 passes through the upright plate 210. A stop 401 is vertically provided on the measuring end of the dial indicator 400. The left end face of the nozzle needle valve body 100 is parallel to and abuts against the right end face of the stop 401. For example, the measuring end of the dial indicator 400 has a second threaded hole 402 axially formed. A threaded post 403 is vertically provided on the left side of the stop 401, and the threaded post 403 is threaded into the second threaded hole 402.

[0023] like Figures 2-3 As shown, the measuring rod 300 is vertically mounted on the upright plate 210 and located below the measuring end of the dial indicator 400. The end of the measuring rod 300 has an upwardly bent measuring hook 301. The upper surface of the measuring hook 301 is an arc-shaped contact surface 302, which matches the arc segment 103. The measuring rod 300 is partially inserted into the axial hole 101 of the nozzle needle valve body 100, and the measuring hook 301 is positioned within the oil reservoir 102. For example, the height of the measuring hook 301 is 2.75 mm.

[0024] like Figure 2 As shown, further, the upright plate 210 has a through hole 211 along its length and a first threaded hole 212 along its height, the first threaded hole 212 connecting to the through hole 211. A clamping ring 213 is provided inside the through hole 211. A clamping screw 214 is provided at the top of the upright plate 210, the clamping screw 214 being threaded into the first threaded hole 212 and the bottom end of the clamping screw 214 abutting against the clamping ring 213. The measuring end of the dial indicator 400 passes through the clamping ring 213, which clamps the dial indicator 400. By tightening the clamping screw 214, the clamping ring 213 is pushed to retract radially, thereby firmly clamping the measuring rod 300 of the dial indicator 400, ensuring that the dial indicator 400 remains vertically stable during measurement, avoiding measurement errors caused by instrument shaking. At the same time, the clamping ring 213 facilitates the quick installation and calibration of the dial indicator 400, improving the repeatability and ease of use of the gauge.

[0025] Furthermore, the right end face of the stop 401 is provided with a wear-resistant cemented carbide layer. The wear-resistant cemented carbide layer improves the hardness and wear resistance of the right end face of the stop 401, avoiding end face flatness errors caused by contact wear during frequent contact measurements, thereby maintaining the accuracy and stability of the measurement reference surface over a long period of time, and ensuring the long-term reliability and consistency of depth measurement data.

[0026] Furthermore, the surface of the measuring hook 301 is provided with a wear-resistant ceramic coating. The wear-resistant ceramic coating enhances the hardness and wear resistance of the surface of the measuring hook 301, resists the wear caused by repeated contact with the inner wall of the arc segment 103 of the oil tank 102, maintains the original contour accuracy of the arc-shaped contact surface 302 over a long period of time, and ensures the matching stability between the measuring hook 301 and the oil tank 102.

[0027] In operation, this embodiment is as follows: Place the nozzle needle valve body 100 on the base plate 220 so that its left end face abuts against the right end face of the stop block 401. Then insert the measuring rod 300 into the axial hole 101 and make the arc-shaped contact surface 302 of the measuring hook 301 completely fit against the inner wall of the arc segment 103 of the oil tank 102. At this time, the measuring end of the dial indicator 400 will be displaced due to axial pressure. The precise depth of the oil tank 102 can be obtained directly by reading the displacement value displayed on the dial indicator 400.

[0028] In this embodiment, the measuring hook 301 of the arc-shaped contact surface 302 at the end of the measuring rod 300, which matches the arc segment 103 of the oil tank 102, extends into the axial hole 101 of the nozzle needle valve body 100 and directly contacts the designated measuring point of the oil tank 102. With the help of the parallel abutment structure between the stop 401 vertically set at the measuring end of the dial indicator 400 and the end face of the nozzle needle valve body 100, the measuring end of the dial indicator 400 is displaced due to axial pressure. The depth of the oil tank 102 can be directly obtained by reading the displacement value displayed on the dial indicator 400, which improves the repeatability and accuracy of the measurement results, ensures that the product quality meets the drawing requirements, and improves the testing efficiency and process consistency.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A gauge for measuring the depth of the oil reservoir in an oil nozzle, characterized in that, For use with a nozzle needle valve body, the nozzle needle valve body has an axial hole on its left side, and an oil-collecting groove is formed in the axial hole. The inner wall of the oil-collecting groove is an arc segment. The gauge for measuring the depth of the oil-collecting groove of the nozzle includes: The frame includes vertical panels and a base plate that are perpendicularly connected to each other; A dial indicator is vertically fixed to the upright plate. The measuring end of the dial indicator passes through the upright plate. A stop is vertically provided on the measuring end of the dial indicator. The left end face of the nozzle needle valve body is parallel to and abuts against the right end face of the stop. A measuring rod is vertically mounted on the upright plate and located below the measuring end of the dial indicator. The end of the measuring rod is provided with an upwardly bent measuring hook. The upper surface of the measuring hook is an arc-shaped contact surface that matches the arc segment. The measuring rod is partially inserted into the axial hole of the nozzle needle valve body, and the measuring hook is positioned in the oil reservoir.

2. The gauge for measuring the depth of the oil reservoir in an oil nozzle according to claim 1, characterized in that: The upright plate has a through hole along its length and a first threaded hole along its height. The first threaded hole connects to the through hole. A clamping ring is provided inside the through hole. A clamping screw is provided at the top of the upright plate. The clamping screw is threaded into the first threaded hole and the bottom end of the clamping screw abuts against the clamping ring. The measuring end of the dial indicator passes through the clamping ring, and the clamping ring clamps the dial indicator.

3. The gauge for measuring the depth of the oil reservoir in an oil nozzle according to claim 1, characterized in that: The dial indicator has a second threaded hole axially opened at the measuring end, and a threaded post is vertically provided on the left side of the stop block, with the threaded post threadedly connected to the second threaded hole.

4. The gage of claim 1, wherein: The radius of the contact end between the oil tank and the top of the measuring hook is 5.5 mm.

5. The gage of claim 4 wherein: The height of the measuring hook is 2.75 mm.

6. The gage of claim 1, wherein: The right end face of the stop is provided with a wear-resistant hard alloy layer.

7. The gauge for measuring the depth of the oil reservoir in an oil nozzle according to claim 1, characterized in that: The surface of the measuring hook is coated with a wear-resistant ceramic coating.

8. The gauge for measuring the depth of the oil reservoir in an oil nozzle according to claim 1, characterized in that: The right side of the bottom end of the upright plate is connected to the left side of the base plate by bolts.

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