A kind of measuring tool for quickly measuring diameter of oil tank of fuel injection nozzle

Abstract

The utility model relates to oil tank technical field, and disclose a kind of measuring tool for quickly measuring oil nozzle oil tank diameter, including measuring body, fixed claw, extension rod, movable claw and percentage measuring table, the fixed claw is connected by screw thread on the front side of measuring body, the extension rod is fixedly installed in the left side of fixed claw, the movable claw is movably connected by step screw on the front side of fixed claw.This kind of measuring tool for quickly measuring oil nozzle oil tank diameter, by setting measuring body, fixed claw, extension rod, movable claw and percentage measuring table, this mode can realize quick measurement, improve detection efficiency while effectively guaranteeing measurement accuracy, when developing in different series of oil nozzle, due to the universality of the measuring tool, subsequent need not new ordering measuring tool, shorten the overall development cycle, reduce development cost, improve the convenience and flexibility of oil tank detection, convenient for operating personnel to use.

Description

Technical Field

[0001] This utility model relates to a measuring tool for quickly measuring the diameter of the oil reservoir of a fuel injector, belonging to the technical field of oil reservoirs. Background Technology

[0002] The oil reservoir is a groove-shaped structure inside the nozzle needle valve body used to hold, store, or guide the oil. It typically serves several functions: firstly, the oil stored in the reservoir ensures a continuous oil supply during injection, preventing interruptions or instability due to insufficient oil. Secondly, the stored oil acts as a buffer, reducing fluctuations in hydraulic pressure and stabilizing injection pressure, thus improving injection accuracy and uniformity. It also guides the oil along a predetermined path to ensure it reaches the working part smoothly. Furthermore, it reduces oil leakage during flow, improving oil utilization efficiency. For nozzles operating in high-temperature environments (such as gas turbine nozzles), the reservoir can circulate and cool the oil, carrying away heat generated by the nozzle and preventing overheating damage. Therefore, the size and shape of the reservoir play a crucial role in nozzle performance. While an excessively large reservoir diameter can increase oil flow speed and volume, it may lead to uneven oil distribution, affecting atomization quality. If the diameter of the oil reservoir is too small, it may obstruct the flow of oil, affecting the injection flow rate and pressure. When machining the oil reservoir of the fuel injector, a measuring tool is needed to measure its diameter.

[0003] Currently, the industry typically uses electrolysis to process oil tanks. Since oil tanks are usually pear-shaped and located inside the needle valve body, their unique shape makes measurement relatively difficult. Previous inspection methods involved cutting them open, which would scrap the nozzles, affect measurement efficiency, and fail to guarantee full inspection, making it inconvenient for operators.

[0004] To address this, a measuring fixture for quickly measuring the diameter of the fuel injector's oil reservoir is proposed. Utility Model Content

[0005] In view of this, the present invention provides a measuring fixture for quickly measuring the diameter of the oil reservoir of a fuel injector, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0006] The technical solution of this utility model is implemented as follows: A measuring fixture for quickly measuring the diameter of the oil reservoir of a fuel injector includes a measuring body, a fixed measuring jaw, an extension rod, a movable measuring jaw, and a percentage gauge. The fixed measuring jaw is threadedly connected to the front side of the measuring body by a screw. The extension rod is fixedly installed on the left side of the fixed measuring jaw. The movable measuring jaw is movably connected to the front side of the fixed measuring jaw by a stepped screw. A spring hook is fixedly installed on the top of the movable measuring jaw. The percentage gauge is located on the top of the movable measuring jaw. An installation block is fixedly installed on the left side of the top of the measuring body.

[0007] More preferably, a clamp is fixedly installed on the right side of the top of the measuring body, and the percentage meter is snapped into the inside of the clamp.

[0008] More preferably, a limiting pin is fixedly installed on the front side of the measuring body, and the top of the limiting pin contacts the bottom of the movable measuring claw.

[0009] More preferably, the percentage gauge and the movable jaw are in the same vertical direction, and the detection end of the bottom of the percentage gauge is attached to the top of the movable jaw.

[0010] More preferably, a compression spring is fixedly mounted on the front side of the measuring body by screws, and the other end of the compression spring is attached to the surface of the spring hook.

[0011] More preferably, a limiting screw is threadedly connected to the front side of the top of the mounting block, and the bottom of the limiting screw contacts the top of the movable claw.

[0012] More preferably, a protective pad is fixedly installed on the inner side of the clamp, and the protective pad is made of rubber.

[0013] The present invention has the following advantages due to the adoption of the above technical solution:

[0014] I. This utility model, through the setting of a measuring body, a fixed measuring jaw, an extension rod, a movable measuring jaw, and a dial indicator, inserts the extension rod and the left side of the movable measuring jaw into the oil nozzle. Then, by adjusting the right side of the movable measuring jaw, the left side of the movable measuring jaw measures the diameter of the oil tank. During measurement, the right side of the movable measuring jaw compresses the dial indicator, causing the dial indicator to reflect the diameter value of the oil tank. This method can achieve rapid measurement, improve detection efficiency, and effectively ensure measurement accuracy. When expanding the development of different series of oil nozzles, due to the universality of this measuring tool, there is no need to order new measuring tools, shortening the overall development cycle and reducing development costs. It also improves the convenience and flexibility of oil tank detection, making it convenient for operators to use.

[0015] Second, by setting up a protective pad, the present invention effectively avoids scratches and damage to the surface of the clamping device caused by excessive squeezing force when the clamping device holds and fixes the dial indicator due to the characteristics of its material.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the clamp structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the compression spring structure of this utility model;

[0021] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A.

[0022] Reference numerals: 1. Measuring body; 2. Fixed measuring jaw; 3. Extension rod; 4. Movable measuring jaw; 5. Spring hook; 6. Mounting block; 7. Clamp; 8. Dial gauge; 9. Compression spring; 10. Limit pin; 11. Limit screw; 12. Protective pad; 13. Stepped screw. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figure 1-3As shown, this utility model embodiment provides a measuring fixture for quickly measuring the diameter of the fuel injector's oil reservoir, including a measuring body 1, a fixed measuring jaw 2, an extension rod 3, a movable measuring jaw 4, and a percentage gauge 8. The fixed measuring jaw 2 is threadedly connected to the front side of the measuring body 1 by screws. The extension rod 3 is fixedly installed on the left side of the fixed measuring jaw 2. The movable measuring jaw 4 is movably connected to the front side of the fixed measuring jaw 2 by stepped screws 13. A spring hook 5 is fixedly installed on the top of the movable measuring jaw 4. The percentage gauge 8 is located on the top of the movable measuring jaw 4. A mounting block 6 is fixedly installed on the left side of the top of the measuring body 1. A clamp 7 is fixedly installed on the right side, and a percentage gauge 8 is snapped into the inside of the clamp 7. A limit pin 10 is fixedly installed on the front side of the measuring body 1. The top of the limit pin 10 is in contact with the bottom of the movable jaw 4. The percentage gauge 8 and the movable jaw 4 are in the same vertical direction. The detection end of the bottom of the percentage gauge 8 is attached to the top of the movable jaw 4. A compression spring 9 is fixedly installed on the front side of the measuring body 1 by screws. The other end of the compression spring 9 is hooked to the surface of the spring hook 5. A limit screw 11 is threadedly connected to the front side of the top of the mounting block 6. The bottom of the limit screw 11 is in contact with the top of the movable jaw 4.

[0027] By setting up a measuring body 1, a fixed measuring jaw 2, an extension rod 3, a movable measuring jaw 4, and a percentage gauge 8, the extension rod 3 and the left side of the movable measuring jaw 4 are inserted into the oil nozzle. Then, by adjusting the right side of the movable measuring jaw 4, the left side of the movable measuring jaw 4 measures the diameter of the oil tank. During measurement, the right side of the movable measuring jaw 4 will compress the percentage gauge 8, causing the percentage gauge 8 to reflect the diameter value of the oil tank. This method can achieve rapid measurement, improve detection efficiency, and effectively ensure measurement accuracy. When expanding the development of different series of oil nozzles, due to the universality of this measuring tool, there is no need to order new measuring tools, shortening the overall development cycle and reducing development costs. It also improves the convenience and flexibility of oil tank detection, making it convenient for operators to use.

[0028] Example 2

[0029] like Figure 4 As shown, in one embodiment, a protective pad 12 is fixedly installed on the inner side of the clamp 7, and the protective pad 12 is made of rubber.

[0030] By setting up the protective pad 12, due to the characteristics of its material, the clamp 7 can effectively prevent the dial gauge 8 from being scratched or damaged on the surface of the clamp 7 due to excessive squeezing force when clamping and fixing it.

[0031] In operation, this invention works as follows: First, the positions of the fixed measuring jaw 2, the extension rod 3, and the movable measuring jaw 4 are adjusted so that the left side of the extension rod 3, the fixed measuring jaw 2, and the movable measuring jaw 4 are inserted into the oil nozzle. Then, the right side of the movable measuring jaw 4 is pulled upwards. At this time, the left side of the movable measuring jaw 4 moves downwards and from the top contact position of the oil tank to the bottom contact position of the oil tank. As the movable measuring jaw 4 is pulled up, the right side of the movable measuring jaw 4 applies upward pressure. The percentage gauge 8 detects the force, thereby detecting the diameter of the oil tank. During the pulling process of the movable measuring jaw 4, the compression spring 9 is stretched and deformed. After the measurement is completed, the operator removes the hand from the movable measuring jaw 4. At this time, the compression spring 9 deforms again due to the loss of force. Then, the compression spring 9 pulls the movable measuring jaw 4 back to its initial position through its own tension. Then, the fixed measuring jaw 2, the extension rod 3, and the movable measuring jaw 4 are removed from the oil nozzle, thus completing the entire measurement work.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A measuring fixture for quickly measuring the diameter of the fuel injector nozzle's oil reservoir, comprising a measuring body (1), a fixed measuring jaw (2), an extension rod (3), a movable measuring jaw (4), and a percentage gauge (8), characterized in that, The fixed measuring jaw (2) is threadedly connected to the front side of the measuring body (1) by a screw. The extension rod (3) is fixedly installed on the left side of the fixed measuring jaw (2). The movable measuring jaw (4) is movably connected to the front side of the fixed measuring jaw (2) by a stepped screw (13). A spring hook (5) is fixedly installed on the top of the movable measuring jaw (4). The percentage gauge (8) is located on the top of the movable measuring jaw (4). An installation block (6) is fixedly installed on the left side of the top of the measuring body (1).

2. The measuring fixture for quickly measuring the diameter of the fuel injector's oil reservoir according to claim 1, characterized in that: A clamp (7) is fixedly installed on the right side of the top of the measuring body (1), and the percentage meter (8) is snapped into the inside of the clamp (7).

3. The measuring fixture for quickly measuring the diameter of the fuel injector's oil reservoir according to claim 1, characterized in that: A limiting pin (10) is fixedly installed on the front side of the measuring body (1), and the top of the limiting pin (10) is in contact with the bottom of the movable measuring claw (4).

4. The measuring fixture for quickly measuring the diameter of the fuel injector's oil reservoir according to claim 1, characterized in that: The percentage gauge (8) and the movable jaw (4) are in the same vertical direction, and the detection end at the bottom of the percentage gauge (8) is attached to the top of the movable jaw (4).

5. The measuring fixture for quickly measuring the diameter of the fuel injector's oil reservoir according to claim 1, characterized in that: A compression spring (9) is fixedly installed on the front side of the measuring body (1) by screws, and the other end of the compression spring (9) is attached to the surface of the spring hook (5).

6. The measuring fixture for quickly measuring the diameter of the fuel injector's oil reservoir according to claim 1, characterized in that: The front side of the top of the mounting block (6) is threaded with a limiting screw (11), the bottom of which is in contact with the top of the movable claw (4).

7. The measuring fixture for quickly measuring the diameter of the fuel injector's oil reservoir according to claim 2, characterized in that: The inner side of the clamp (7) is fixedly fitted with a protective pad (12), which is made of rubber.

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