Air injection test structure for oil injection hole of cooling oil pipe assembly

Abstract

An air injection test structure for an oil injection hole of a cooling oil pipe assembly comprises a workbench, an arc-shaped positioning table is fixedly connected to the position over the workbench, and an open hole used for allowing an oil injection branch pipe to penetrate through is formed in the positioning table in the arc-shaped direction of the positioning table; a vertical first gas picking target is fixedly connected to the position, below the open hole, of the workbench, a first gas picking hole is formed in the first gas picking target, and the first gas picking hole is used for corresponding to the oil spraying hole in the oil spraying branch pipe; a plurality of second air pickup targets are distributed on the inner ring of the positioning table in the arc direction of the positioning table, and second air pickup holes face the upper portion of the positioning table and are used for corresponding to oil spraying holes in the main oil duct; the positioning table matched with the main oil duct in shape is arranged, the air pick-up holes corresponding to the oil spraying holes are fixedly formed in the workbench and the positioning table, the machining condition of the oil spraying holes is judged through the air pick-up amount of the air pick-up holes, the detection precision is high, and it can be guaranteed that the testing environment is clean and sanitary.

Description

Technical Field

[0001] The utility model relates to the technical field of testing of cooling oil pipe assemblies, and particularly relates to a jet testing structure for an oil injection hole of a cooling oil pipe assembly. Background Art

[0002] The electric drive cooling system is used to cool the electric drive motor to ensure the normal operation of the electric drive motor; in addition to overall cooling of the electric drive motor, which can be achieved by adding a large amount of lubricating oil, fixed-point cooling can also be carried out, and fixed-point oil injection cooling is achieved through a cooling oil pipe. The cooling spray oil pipe of an oil-cooled motor with the publication number CN220653134U and a cooling oil pipe assembly with the application number 2024214932123 both include a main oil passage and an oil injection branch pipe connected to the main oil passage. The inside of the oil injection branch pipe is a sub-oil passage, and oil injection holes are distributed on both the oil injection branch pipe and the main oil passage; during use, the cooling oil pipe assembly is wound around the outside of the electric drive motor and close to the electric drive motor, and the oil injection holes are directed towards specific points to be cooled on the electric drive motor, and the oil injection holes perform fixed-point oil injection cooling on the electric drive motor, so that a small amount of oil injection can meet the cooling requirements of the electric drive motor. In order to test the oil injection holes of the cooling oil pipe assembly to detect whether the position and size of the oil injection holes exceed the allowable error range, currently, there is a lack of a matching test tooling on the market. Summary of the Utility Model

[0003] Aiming at the problems in the prior art, the utility model provides a jet testing structure for an oil injection hole of a cooling oil pipe assembly, aiming to simulate specific points to be cooled on an electric drive motor and judge whether the oil injection holes of the cooling oil pipe assembly meet the spraying requirements.

[0004] A jet testing structure for an oil injection hole of a cooling oil pipe assembly includes a workbench. An arc-shaped positioning table is fixedly connected above the workbench. An opening for passing through the oil injection branch pipe is provided on the positioning table along its arc direction; a vertical first air pickup target is fixedly connected to the workbench at a position below the opening. A first air pickup hole is provided on the first air pickup target, and the first air pickup hole faces the axis of the opening and is used to correspond to the oil injection hole on the oil injection branch pipe; a plurality of second air pickup targets are distributed along the arc direction on the inner circle of the positioning table. The upper end of the second air pickup target extends above the positioning table. A second air pickup hole is provided at the upper end of the second air pickup target, and the second air pickup hole faces above the positioning table and is used to correspond to the oil injection hole on the main oil passage.

[0005] Further: a first positioning groove is provided on the workbench corresponding to the position of the first air pickup target. The first positioning groove is matched with the bottom of the first air pickup target. The bottom of the first air pickup target is located in the first positioning groove and is bolted to the workbench.

[0006] Further, a second positioning groove is provided on the inner ring of the positioning table at a position corresponding to the second air pickup target. The second positioning groove matches the lower end of the second air pickup target. The bottom surface of the second air pickup target is flush with the bottom surface of the positioning table, and the lower end of the second air pickup target is bolted to the positioning table.

[0007] Further, the upper end of the second air pickup target is inclined upward and extends toward the central axis of the positioning table.

[0008] Further, a telescopic rotary cylinder is fixedly installed on the workbench at a position close to the end of the positioning table. The telescopic rotary cylinder is vertically arranged, and a swing arm is fixedly connected to the top of its telescopic rotary rod. A vertical sleeve is integrally provided at the free end of the swing arm. The upper end of the sleeve is used to connect to the air source, and the lower end of the sleeve is used to connect to the vertical air inlet nozzle of the cooling oil pipe assembly.

[0009] Further, the positioning table and the workbench are fixedly connected by columns. The lower end of the column is bolted to the workbench, and the upper end of the column passes through the positioning table and has an interference fit with it.

[0010] The beneficial effects of the present utility model: By providing a positioning table that matches the outer shape of the main oil passage, and fixedly providing air pickup holes corresponding to the injection holes on the workbench and the positioning table, the machining condition of the injection holes is judged by the air pickup volume of the air pickup holes, with high detection accuracy and ensuring a clean and hygienic test environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic structural diagram of the cooling oil pipe assembly;

[0013] Figure 3 is a schematic assembly effect diagram of the present utility model and the cooling oil pipe assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The present utility model will be described in detail below with reference to the drawings. The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model. The orientation terms such as left, middle, right, upper, and lower in the embodiments of the present utility model are only relative concepts to each other or are referred to the normal use state of the product and should not be considered as restrictive.

[0015] A jet testing structure for cooling the injection holes of an oil pipe assembly includes a workbench 1. An arc-shaped positioning table 2 is fixedly connected directly above the workbench 1. The positioning table 2 is horizontally arranged. The positioning table 2 and the workbench 1 are fixedly connected by columns 11. The lower end of the column 11 is bolted to the workbench 1, and the upper end of the column 11 passes through the positioning table 2 and is in interference fit with it. The tabletop of the positioning table 2 is used to fit against the lower outer wall of the main oil passage 61 of the cooling oil pipe assembly. An opening 21 for passing through the injection branch pipe 63 is provided on the positioning table 2 along its arc direction; A vertical first air pickup target 4 is fixedly connected to the workbench 1 at a position below the opening 21. A first air pickup hole 41 is provided on the first air pickup target 4. The first air pickup hole 41 faces the axis of the opening 21, and the first air pickup hole 41 is used to correspond to the injection hole 62 on the injection branch pipe 63; A number of second air pickup targets 3 are distributed along the arc of the inner circle of the positioning table 2. The upper end of the second air pickup target 3 extends above the positioning table 2. A second air pickup hole 31 is provided at the upper end of the second air pickup target 3. The second air pickup hole 31 faces upward above the positioning table 2 and is used to correspond to the injection hole 62 on the main oil passage 61.

[0016] Among them, to facilitate the installation of the first air pickup target 4 on the workbench 1, a first positioning groove 12 is provided on the workbench 1 at a position corresponding to the first air pickup target 4. The first positioning groove 12 matches the bottom of the first air pickup target 4. The bottom of the first air pickup target 4 is located in the first positioning groove 12 and is bolted to the workbench 1. To facilitate the installation of the second air pickup target 3 on the positioning table 2, a second positioning groove 22 is provided on the inner circle of the positioning table 2 at a position corresponding to the second air pickup target 3. The second positioning groove 22 matches the lower end of the second air pickup target 3. The bottom surface of the second air pickup target 3 is flush with the bottom surface of the positioning table 2, and the lower end of the second air pickup target 3 is bolted to the positioning table 2; To facilitate controlling the distance between the second air pickup hole 31 and the injection hole, the upper end of the second air pickup target 3 is inclined upward and extends towards the direction close to the central axis of the positioning table 2.

[0017] In addition, to facilitate supplying air to the cooling oil pipe assembly, a telescopic rotary cylinder 5 is fixedly installed on the workbench 1 near the end of the positioning table 2. The telescopic rotary cylinder 5 is vertically arranged and a swing arm 52 is fixedly connected to the top of its telescopic rotary rod 51. A vertical sleeve 53 is integrally provided at the free end of the swing arm 52. The upper end of the sleeve 53 is used to connect to the air source, and the lower end of the sleeve 53 is used to connect to the vertical air inlet nozzle 64 of the cooling oil pipe assembly.

[0018] During operation, place the cooling oil pipe assembly on the positioning table 2. At this time, the fuel injection branch pipe 63 is inserted into the opening 21 and fits with it, and the lower outer wall of the main oil passage 61 fits with the tabletop of the positioning table 2. Then, connect the vertical air inlet nozzle 64 of the cooling oil pipe assembly to the air source through the sleeve 53, introduce gas with a constant pressure into the cooling oil pipe assembly, and enable the fuel injection hole 62 to eject a columnar air flow. Since the position error of the fuel injection hole 62 and the burrs inside it will affect the direction and magnitude of the air flow, the first air pickup target 4 and the second air pickup target 3 set at the set positions are used to collect the gas ejected from the fuel injection hole 62, and it is inferred whether the fuel injection hole 64 is qualifiedly processed according to the collected gas data.

[0019] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A jet testing structure for cooling the fuel injection holes of a fuel pipe assembly, characterized in that: It includes a workbench, with an arc-shaped positioning table fixedly connected directly above the workbench. An opening for passing through an oil injection branch pipe is formed on the positioning table along its arc direction; a vertical first air pickup target is fixedly connected to the position on the workbench below the opening. First air pickup holes are provided on the first air pickup target, and the axes of the first air pickup holes face the opening. The first air pickup holes are used to correspond to the oil injection holes on the oil injection branch pipe; a number of second air pickup targets are distributed along the arc direction on the inner ring of the positioning table. The upper end of the second air pickup target extends above the positioning table. Second air pickup holes are provided at the upper end of the second air pickup target, and the second air pickup holes face upward above the positioning table and are used to correspond to the oil injection holes on the main oil passage.

2. The jet testing structure for cooling the fuel injection holes of the fuel pipe assembly according to claim 1, wherein: A first positioning groove is formed on the workbench corresponding to the position of the first air pickup target. The first positioning groove matches the bottom of the first air pickup target. The bottom of the first air pickup target is located in the first positioning groove and is bolted to the workbench.

3. The jet testing structure for cooling the fuel injection holes of the fuel pipe assembly according to claim 1, wherein: A second positioning groove is formed on the inner ring of the positioning table corresponding to the position of the second air pickup target. The second positioning groove matches the lower end of the second air pickup target. The bottom surface of the second air pickup target is flush with the bottom surface of the positioning table, and the lower end of the second air pickup target is bolted to the positioning table.

4. The jet test structure for cooling the fuel injection holes of the oil pipe assembly according to claim 1 or 3, characterized in that: The upper end of the second air pickup target is inclined upward and extends in the direction close to the central axis of the positioning table.

5. The jet test structure for cooling the injection holes of the oil pipe assembly according to claim 1, characterized in that: A telescopic rotary cylinder is fixedly installed at the position on the workbench close to the end of the positioning table. The telescopic rotary cylinder is vertically arranged, and a swing arm is fixedly connected to the top of its telescopic rotary rod. A vertical sleeve is integrally arranged at the free end of the swing arm. The upper end of the sleeve is used to connect to the air source, and the lower end of the sleeve is used to connect to the vertical air inlet nozzle of the cooling oil pipe assembly.

6. The jet test structure for cooling the fuel injection holes of the fuel pipe assembly according to claim 1, wherein: The positioning table and the workbench are fixedly connected through a column. The lower end of the column is bolted to the workbench, and the upper end of the column passes through the positioning table and has an interference fit with it.

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