Marine diesel engine crosshead pin temperature sensor hole detection tool

Abstract

The utility model provides a marine diesel engine crosshead pin temperature sensor hole detection tool comprising a main measuring rod, one end of the head of the main measuring rod is provided with a head shaft section, one end of the tail of the main measuring rod is provided with a tail hand-held section, one end of the main measuring rod close to the tail hand-held section is provided with a threaded section, and the other end of the main measuring rod close to the tail hand-held section is provided with a threaded rod. A tool withdrawal groove is formed between the threaded section and the tail handheld section. The tool is manufactured according to the structural characteristics of the crosshead bearing detection temperature sensor to be installed, detection of the crosshead bearing detection temperature sensor hole can be conveniently and rapidly completed, whether interference exists between the temperature sensor and the temperature measuring hole can be effectively detected, and meanwhile whether the temperature sensor can be installed smoothly can be verified; an effective inspection effect can be achieved; the tool main body is stable in structure, the inspection quality and the inspection efficiency are improved, and meanwhile the operation cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of marine detection tooling, and mainly relates to a marine diesel engine crosshead pin temperature sensor hole detection tooling. Background Art

[0002] The material of the crosshead pin of the diesel engine main engine is [W-FU-325-N]. Since the crosshead bearing detection temperature sensor hole is a slender step hole system with a small aperture and deep depth, after processing, there may be interference with the inner wall of the hole when installing the temperature sensor, or there may be a coaxiality difference in the hole system, and it may not be installed in place. In order to ensure that the crosshead bearing detection temperature sensor can be installed smoothly without interference problems, it is necessary to add the inner wall interference inspection and coaxiality inspection process. The conventional inspection method is generally to use the drill bit of the smallest hole in the processing hole system for inspection. This method has low inspection efficiency and is not accurate enough due to gravity and other problems, and the effect is not good. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the utility model provides a marine diesel engine crosshead pin temperature sensor hole detection tooling, which is made according to the structural characteristics of the crosshead bearing detection temperature sensor to be installed, and can conveniently and quickly complete the detection of the crosshead bearing detection temperature sensor hole, and can effectively detect whether there is interference between the temperature sensor and the temperature measuring hole, and at the same time can verify whether the temperature sensor can be successfully installed; it can achieve effective inspection and checking effects; the main structure of the tooling is stable, which improves the inspection quality and efficiency, and saves operating costs.

[0004] In order to realize the above-mentioned technical features, the purpose of the utility model is realized as follows: a marine diesel engine crosshead pin temperature sensor hole detection tooling, comprising a main measuring rod, a head shaft section is arranged at one end of the head of the main measuring rod, a tail hand-held section is arranged at one end of the tail of the main measuring rod, a threaded section is arranged at one end of the main measuring rod close to the tail hand-held section, and a tool withdrawal groove is arranged between the threaded section and the tail hand-held section.

[0005] The outer surface of the tail hand-held section is provided with a knurling structure.

[0006] The end of the head shaft section is provided with a conical tip.

[0007] The coaxiality of the head shaft section, the main measuring rod and the threaded section is at least 0.01.

[0008] The total length L of the main measuring rod is equal to the total length L1 of the temperature measuring hole; the main measuring rod matches the temperature measuring hole, and the temperature measuring hole is used to match the main rod of the crosshead bearing detection temperature sensor.

[0009] One end of the head of the temperature measuring hole is a head axial hole, which cooperates with the head shaft section. At the same time, the head shaft hole is used to cooperate with the head probe of the crosshead bearing detection temperature sensor. The length S of the head shaft section is equal to the length S1 of the head axial hole.

[0010] The threaded section matches with the threaded hole at the tail of the temperature measuring hole, the nominal diameter MA of the threaded section is equal to the nominal inner diameter MB of the threaded hole; and the threaded hole matches with the sensor threaded column of the crosshead bearing detection temperature sensor.

[0011] The main measuring rod diameter φA is smaller than the inner diameter φC of the temperature measuring hole, and the main measuring rod diameter φA is larger than the diameter of the main rod of the crosshead bearing detection temperature sensor.

[0012] The head shaft section diameter φB is equal to the inner diameter φD of the head shaft hole;

[0013] The main measuring rod is made of quenched 45 steel bar.

[0014] The utility model has the following beneficial effects:

[0015] 1. The detection tooling of the utility model is made according to the structural characteristics of the crosshead bearing detection temperature sensor to be installed. It can conveniently and quickly complete the detection of the crosshead bearing detection temperature sensor hole, and can effectively detect whether there is interference between the temperature sensor and the temperature measuring hole, and can verify whether the temperature sensor can be installed smoothly; it can achieve effective inspection results; the main structure of the tooling is stable, which improves the inspection quality and efficiency, and saves operating costs.

[0016] 2. The knurled structure facilitates the subsequent screw-in installation of the detection tooling and ensures that no additional auxiliary tools are required during the installation process, thereby improving the installation efficiency.

[0017] 3. The above-mentioned conical tip can be used to cooperate with the head shaft hole of the temperature measuring hole on the one hand, and on the other hand, it can protect the inner wall of the temperature measuring hole during the installation process to prevent damage to the temperature measuring hole.

[0018] 4. The above-mentioned coaxiality ensures the accuracy of subsequent inspection of the temperature measuring hole using inspection tools.

[0019] 5. The above-mentioned length size coordination ensures that the main measuring rod can be well matched with the temperature measuring hole, thereby ensuring the subsequent detection accuracy and reliability of the temperature measuring hole.

[0020] 6. Through the above-mentioned dimensional matching, the reliable matching between the head shaft section and the head shaft hole is guaranteed in the subsequent measurement process, thereby ensuring the accurate detection of the head shaft section.

[0021] 7. By adopting the threaded cooperation between the threaded section and the threaded hole, it is ensured that the temperature measuring fixture can be tightened through the threaded connection later, so that the main measuring rod can be extended into the interior of the temperature measuring hole.

[0022] 8. Through the above-mentioned diameter size coordination, it is guaranteed that there is interference between the temperature sensor and the temperature measuring hole in the subsequent effective detection, and at the same time it can verify whether the temperature sensor can be installed smoothly, which can achieve effective inspection results.

[0023] 9. The size matching between the head shaft section and the head shaft hole ensures that the subsequent head shaft section can extend into the interior of the head shaft hole, thereby realizing the detection of the head shaft hole.

[0024] 10. Made of the above materials, the main structure of the tooling is stable, the inspection quality and efficiency are improved, and the operating cost is saved. The requirement after quenching treatment is between HR33 and 38. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 This is a structural diagram of the detection tooling of the utility model.

[0027] Figure 2 This is a structural diagram of the temperature measuring hole of the utility model.

[0028] Figure 3 This is a structural diagram of the crosshead bearing detection temperature sensor of the utility model being installed inside the temperature measuring hole.

[0029] Figure 4 This is a diagram of the temperature measuring hole of the utility model inside the crosshead pin of a marine diesel engine.

[0030] In the figure: tail handheld section 1, knurling structure 2, back cut groove 3, threaded section 4, main measuring rod 5, head shaft section 6, tapered tip 7, head shaft hole 8, temperature measuring hole 9, threaded hole 10, crosshead bearing detection temperature sensor 11, head probe 12, main rod 13, sensor threaded column 14. DETAILED DESCRIPTION

[0031] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0032] Embodiment 1:

[0033] See also Figure 1-4, a tool for detecting the temperature sensor hole of a crosshead pin of a marine diesel engine, comprising a main measuring rod 5, a head shaft section 6 is arranged at one end of the head of the main measuring rod 5, a tail handheld section 1 is arranged at one end of the tail of the main measuring rod 5, a threaded section 4 is arranged at one end of the main measuring rod 5 close to the tail handheld section 1, and a backing groove 3 is arranged between the threaded section 4 and the tail handheld section 1. This tool is made according to the structural characteristics of the crosshead bearing detection temperature sensor to be installed, and can conveniently and quickly complete the detection of the crosshead bearing detection temperature sensor hole, can effectively detect whether there is interference between the temperature sensor and the temperature measuring hole, and can verify whether the temperature sensor can be installed smoothly; can achieve effective inspection and inspection effects; the main structure of the tool is stable, the inspection quality and efficiency are improved, and the operating cost is saved.

[0034] Furthermore, the outer surface of the tail handle section 1 is provided with a knurled structure 2. The knurled structure 2 facilitates the subsequent screw-in installation of the detection tooling, ensures that no additional auxiliary tools are required during the installation process, and improves the installation efficiency.

[0035] Furthermore, the end of the head shaft section 6 is provided with a conical tip 7. The conical tip 7 can be used to match the head shaft hole 8 of the temperature measuring hole 9 on the one hand, and can protect the inner wall of the temperature measuring hole 9 during installation to prevent damage to the temperature measuring hole on the other hand.

[0036] Furthermore, the coaxiality of the head shaft section 6, the main measuring rod 5 and the threaded section 4 is at least 0.01. The above coaxiality ensures the accuracy of the subsequent inspection of the temperature measuring hole by the inspection tool.

[0037] Furthermore, the total length L of the main measuring rod 5 is equal to the total length L1 of the temperature measuring hole 9; the main measuring rod 5 is matched with the temperature measuring hole 9, and the temperature measuring hole 9 is used to match with the main rod 13 of the crosshead bearing detection temperature sensor 11. Through the above-mentioned length size matching, it is ensured that the main measuring rod 5 can be well matched with the temperature measuring hole 9, thereby ensuring the subsequent detection accuracy and reliability of the temperature measuring hole 9.

[0038] Furthermore, one end of the head of the temperature measuring hole 9 is a head shaft hole 8, which matches the head shaft section 6. The head shaft hole 8 is used to match the head probe 12 of the crosshead bearing detection temperature sensor 11, and the length S of the head shaft section 6 is equal to the length S1 of the head shaft hole 8. Through the above-mentioned size matching, the reliable matching between the head shaft section 6 and the head shaft hole 8 is guaranteed in the subsequent measurement process, thereby ensuring the accurate detection of the head shaft section 6.

[0039] Furthermore, the threaded section 4 is matched with the threaded hole 10 at the tail of the temperature measuring hole 9, and the nominal diameter MA of the threaded section 4 is equal to the nominal inner diameter MB of the threaded hole 10; and the threaded hole 10 is matched with the sensor threaded column 14 of the crosshead bearing detection temperature sensor 11. By adopting the threaded match between the threaded section 4 and the threaded hole 10, it is ensured that the temperature measuring tool can be tightened by threaded connection later, so that the main measuring rod 5 can be extended into the interior of the temperature measuring hole 9.

[0040] Furthermore, the diameter φA of the main measuring rod 5 is smaller than the inner diameter φC of the temperature measuring hole 9, and the diameter φA of the main measuring rod 5 is larger than the diameter of the main rod 13. Through the above-mentioned diameter size matching, it is ensured that there is interference between the temperature sensor and the temperature measuring hole in the subsequent effective detection, and at the same time, it can be verified whether the temperature sensor can be installed smoothly, and an effective inspection effect can be achieved.

[0041] Furthermore, the diameter φB of the head shaft section 6 is 0.02 less than the inner diameter φD of the head shaft hole 8. The size matching between the head shaft section 6 and the head shaft hole 8 ensures that the head shaft section 6 can be inserted into the head shaft hole 8, thereby realizing the detection of the head shaft hole 8.

[0042] Furthermore, the main measuring rod 5 is made of quenched 45 bar stock. The above-mentioned material ensures the stability of the main structure of the tooling, improves the inspection quality and inspection efficiency, and saves operating costs. The requirement after quenching treatment is between HRC33 and 38.

[0043] Embodiment 2:

[0044] A method for detecting a temperature sensor hole of a crosshead pin of a marine diesel engine, the method being implemented by using the detection tool, comprising the following steps:

[0045] Step 1: Extract the size of the crosshead pin temperature sensor hole of the diesel engine to be tested:

[0046] Different inspection tools need to be made according to different types of diesel engine cross pins. First, obtain the cross pin temperature sensor installation hole system diagram and temperature sensor drawing, and obtain the total length L1 and inner diameter φC of the temperature measuring hole 9, the length S1 and inner diameter φD of the head shaft hole 8, and obtain the diameter of the main rod 13, and obtain the nominal inner diameter MB of the threaded hole 10;

[0047] Step 2: Determine the basic dimensions of the inspection tooling:

[0048] According to the relevant dimensions of the temperature measuring hole 9, the head shaft hole 8, the main rod 13 and the threaded hole 10 obtained in step 1, it is determined that the total length L of the main measuring rod 5 is equal to the total length L1 of the temperature measuring hole 9, the diameter φA of the main measuring rod 5 is smaller than the inner diameter φC of the temperature measuring hole 9, the diameter φA of the main measuring rod 5 is larger than the diameter of the main rod 13, the diameter φB of the head shaft section 6 is 0.02 less than the lower tolerance of the inner diameter φD of the head shaft hole 8, and the nominal diameter MA of the threaded section 4 is equal to the nominal inner diameter MB of the threaded hole 10;

[0049] Step 3: Production of testing tooling:

[0050] According to the basic dimensions of the inspection tooling determined in step 2, the inspection tooling is processed;

[0051] Step 4: Detection of diesel engine crosshead pin temperature sensor hole:

[0052] Clean the processed crosshead bearing temperature sensor installation hole, insert the processed head shaft section 6 and main measuring rod 5 of the detection tooling into the temperature measuring hole 9, and screw the threaded section 4 in to detect the accuracy of the hole system;

[0053] By checking that the diameter φA of the main measuring rod 5 of the tooling is smaller than the inner diameter φC of the temperature measuring hole 9 and that the diameter φA of the main measuring rod 5 is larger than the diameter of the main rod 13, it is effectively detected whether there is interference between the temperature sensor and the temperature measuring hole, and at the same time it can be verified whether the temperature sensor can be installed smoothly.

Claims

1. A marine diesel engine crosshead pin temperature sensor hole detection tool, characterized in that: The invention comprises a main measuring rod (5), wherein a head shaft section (6) is arranged at one end of the head of the main measuring rod (5), a tail hand-held section (1) is arranged at one end of the tail of the main measuring rod (5), a threaded section (4) is arranged at one end of the main measuring rod (5) close to the tail hand-held section (1), and a tool withdrawal groove (3) is arranged between the threaded section (4) and the tail hand-held section (1).

2. According to claim 1, a marine diesel engine crosshead pin temperature sensor hole detection tooling, characterized in that: The outer surface of the tail hand-held section (1) is provided with a knurled structure (2).

3. According to claim 1, a marine diesel engine crosshead pin temperature sensor hole detection tooling, characterized in that: The end of the head shaft section (6) is provided with a conical tip (7).

4. According to claim 1, a marine diesel engine crosshead pin temperature sensor hole detection tooling, characterized in that: The coaxiality of the head shaft section (6), the main measuring rod (5) and the threaded section (4) is at least 0.

01.

5. According to claim 1, a marine diesel engine crosshead pin temperature sensor hole detection tooling, characterized in that: The total length L of the main measuring rod (5) is equal to the total length L1 of the temperature measuring hole (9); the main measuring rod (5) cooperates with the temperature measuring hole (9), and the temperature measuring hole (9) is used to cooperate with the main rod (13) of the crosshead bearing detection temperature sensor (11).

6. A marine diesel engine crosshead pin temperature sensor hole detection tooling according to claim 5, characterized in that: One end of the head of the temperature measuring hole (9) is a head shaft hole (8), the head shaft hole (8) cooperates with the head shaft section (6), and the head shaft hole (8) is used to cooperate with the head probe (12) of the crosshead bearing detection temperature sensor (11), and the length S of the head shaft section (6) is equal to the length S1 of the head shaft hole (8).

7. A marine diesel engine crosshead pin temperature sensor hole detection tool as claimed in claim 5, characterized in that: The threaded section (4) cooperates with a threaded hole (10) at the tail end of the temperature measuring hole (9); the nominal diameter MA of the threaded section (4) is equal to the nominal inner diameter MB of the threaded hole (10); and the threaded hole (10) cooperates with a sensor threaded column (14) of a crosshead bearing detection temperature sensor (11).

8. The crosshead pin temperature sensor hole detection tool for a marine diesel engine according to claim 5, characterized in that: The diameter φA of the main measuring rod (5) is smaller than the inner diameter φC of the temperature measuring hole (9), and the diameter φA of the main measuring rod (5) is larger than the diameter of the main rod (13) of the crosshead bearing detection temperature sensor (11).

9. A marine diesel engine crosshead pin temperature sensor hole detection tool as claimed in claim 6, characterized in that: The diameter φB of the head shaft section (6) is smaller than the lower tolerance of the inner diameter φD of the head shaft hole (8) by 0.02; The main measuring rod (5) is made of quenched 45 steel bar stock.

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