Tool for measuring air pressure attenuation and oil sealing of engine starter

Abstract

The utility model relates to the technical field of starter production and maintenance, in particular to an engine starter air pressure attenuation and oil sealing measurement tool, which comprises a tool shell, a tool base, a tool base, a tool base, a tool base, a tool base and a tool clamping device, and is characterized in that the tool base is of a circular structure and is used for fixedly connecting a starter to guarantee stability in a measurement process; the connector is installed in the middle of one side of the tool shell and used for being connected with a test air source, an oil source and an external pressure gauge so as to measure the air pressure attenuation effect of the starter, and the interior of the connector is hollow; and the oil seal plate is arranged in the tool shell and is used for forming a secondary sealing cavity together with the joint and the starter output shaft sealing ring to measure the oil sealing effect of the starter output shaft. The utility model provides the measuring tool for the air pressure attenuation and the oil sealing of the engine starter, the measuring precision is improved, the operation is convenient, the working efficiency is improved, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to starter production maintenance technical field, concretely is a kind of engine starter air pressure attenuation and oil seal measurement tool. BACKGROUND

[0002] In the production and maintenance process of starter, the detection of its sealing performance and pressure maintaining performance is crucial. In the prior art, the measurement method and tool of starter pressure attenuation and oil seal have many deficiencies: the general tool is difficult to match the interface size of starter, additional adapter needs to be processed, which increases cost and time; the traditional clamp sealing design is simple, and leakage is easily caused by vibration or pressure fluctuation, which affects the test accuracy; some measurement methods are complex to operate, and professional technicians are needed to operate, which limits the efficiency of measurement work, increases the risk of human operation, and further affects the reliability of measurement results; some tool designs are unreasonable, and the pressure environment under the actual working state of starter cannot be accurately simulated, resulting in inaccurate measurement results. These problems not only affect the production quality and efficiency of starter, but also increase the production cost and maintenance difficulty. SUMMARY

[0003] To solve the above technical problems, the utility model provides a kind of measurement tool of engine starter air pressure attenuation and oil seal.

[0004] The technical problem to be solved by the utility model is realized by the following technical scheme:

[0005] A kind of measurement tool of engine starter air pressure attenuation and oil seal, comprising:

[0006] Tool shell, for fixedly connecting starter, to ensure stability during measurement, is circular structure;

[0007] Connector, installed in the middle of one side of the tool shell, for connecting test gas source, oil source and external pressure gauge to measure the air pressure attenuation effect of starter, the inside of the connector is hollow;

[0008] Oil seal plate, installed in the tool shell, for forming secondary sealing cavity with the connector, starter output shaft sealing ring to measure the oil seal effect of starter output shaft.

[0009] As a further improvement of the utility model, the inside of the tool shell is provided with tool fixing hole for connecting and fixing starter, and the tool fixing hole is distributed with a plurality of circumferential directions.

[0010] As a further improvement of the utility model, the middle of one side of the tool shell is provided with connector welding hole, and the connector is installed in the connector welding hole.

[0011] As a further improvement of the utility model, the inside of the tool shell is provided with an oil seal plate step, the oil seal plate step is a circular structure, and the oil seal plate step and the joint welding hole are distributed along the same central axis.

[0012] As a further improvement of the utility model, the oil seal plate step is provided with a plurality of oil seal plate mounting holes which are uniformly distributed in the circumferential direction on the step surface.

[0013] As a further improvement of the utility model, the inside of the joint is provided with a hollow channel.

[0014] As a further improvement of the utility model, the inner hole side wall of the oil seal plate is provided with a sealing ring groove.

[0015] As a further improvement of the utility model, the oil seal plate is uniformly provided with a plurality of oil seal plate through holes in the circumferential direction, and the plurality of oil seal plate through holes and the plurality of oil seal plate mounting holes are one-to-one corresponding in position.

[0016] The utility model has the advantages of:

[0017] The utility model provides a kind of engine starter gas pressure attenuation and oil seal's measurement tool, improve measurement accuracy on one hand: the reasonable design of tool and accurate measurement method, can accurately simulate starter working pressure environment, reduce measurement error, improve measurement accuracy, ensure the accuracy of starter quality detection.Secondly, it is convenient to operate: detailed operation procedure is formulated, so that measurement process is simple and easy to understand, even non-professional personnel can quickly get started, improve work efficiency, reduce the influence of artificial factors on measurement result.In addition, maintenance cost is reduced: accurate measurement result is helpful to find the leakage problem of starter in time, avoids the damage of starter due to leakage not in time, reduces the maintenance cost of starter. DRAWINGS

[0018] The utility model is further described below in connection with drawings and embodiment:

[0019] Figure 1 It is structure schematic view of the utility model;

[0020] Figure 2 It is tool shell cross section structure schematic view;

[0021] Figure 3 It is tool shell overhead structure schematic view;

[0022] Figure 4 It is joint cross section structure schematic view;

[0023] Figure 5 It is oil seal plate cross section structure schematic view;

[0024] Figure 6It is an oil seal plate overhead structure schematic diagram;

[0025] Figure 7 It is a structure schematic diagram under the use state of the utility model.

[0026] In the drawing: 1, tool shell; 2, tool fixing hole; 3, joint welding hole; 4, joint; 41, hollow channel; 5, oil seal plate mounting hole; 6, oil seal plate step; 7, oil seal plate; 71, sealing ring groove; 72, oil seal plate through hole; 8, secondary sealing cavity. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with the drawings and examples.

[0028] As Figures 1 to 6 Indicated, a kind of engine starter gas pressure attenuation and oil seal measurement tool, including tool shell 1, joint 4, oil seal plate 7.

[0029] Specifically, the tool shell 1 is the main structure of the tool, is used to fixedly connect starter, provides installation base for other components, guarantees stability in measurement process.The inside of the tool shell 1 is provided with tool fixing hole 2 for connecting and fixing starter, the tool fixing hole 2 is used to connect and fix tool and starter, ensure that connection is firm and reliable.In the embodiment, the tool fixing hole 2 is distributed with three along circumference.The middle position of one side of the tool shell 1 is provided with joint welding hole 3, the joint welding hole 3 is used to install the joint 4.The inside of the tool shell 1 is provided with oil seal plate step 6, the oil seal plate step 6 is circular structure, the oil seal plate step 6 is with the concentric axis of the joint welding hole 3 split;Several oil seal plate mounting holes 5 that are evenly distributed along circumference are provided on the step surface of the oil seal plate step 6, in the embodiment, the oil seal plate mounting hole 5 is provided with three.The oil seal plate mounting hole 5 and the oil seal plate step 6 are used to install and fix oil seal plate 7.

[0030] The joint 4 is installed in the joint welding hole 3, the joint 4 is used to connect test gas source, oil source and external pressure gauge reading, the inside of the joint 4 is hollow, is provided with hollow channel 41, can guarantee that gas or oil can be smoothly transmitted and real-time observation pressure variation.

[0031] The inner hole side wall of the oil seal plate 7 has a circle sealing ring groove 71, the sealing ring groove 71 can form a secondary sealing cavity 8 with the joint 4 and starter output shaft sealing ring, can be used to measure the oil seal effect of output shaft when needed.In addition, the oil seal plate 7 is evenly distributed with three oil seal plate through holes 72 along circumference, three oil seal plate through holes 72 and three oil seal plate mounting holes 5 position one-to-one correspondence.

[0032] The working principle and use process of the utility model are as follows:

[0033] When measuring the gas pressure attenuation, the joint 4 is installed in the joint welding hole 3, the bolt of the starter is used to connect the starter and the tool, and the connection is ensured to be tight, as shown in the figure. Figure 7 Then, the gas with a certain pressure is supplied to the inside of the tool shell. The gas source supply valve is closed, the timing is started, the leakage rate is monitored, and the process is continued for a certain time. Based on the change rule of the gas pressure in the sealed space, the sealing performance of the starter is judged by measuring the pressure attenuation value. Within this time, if the maximum pressure attenuation value does not exceed 3.45 kPa / min, the starter meets the release requirements after maintenance and repair, and the sealing performance of the starter meets the requirements; if it exceeds 3.45 kPa / min, the starter has a leakage problem, and the relevant parts need to be repaired or replaced.

[0034] When measuring the oil seal, the oil seal plate 7 is installed in the oil seal plate step 6 through the bolt, the output shaft of the starter is clamped into the sealing ring groove 71, and the sealing effect is directly measured. This method is suitable for separate test of the output shaft and also suitable for overall test of the output shaft installed on the starter.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An engine starter air pressure decay and oil seal measurement fixture, characterized by: Include: Tooling shell (1), for fixing connection starter, ensure the stability during measurement; Joint (4) is installed in the middle of one side of the tooling shell (1), for connecting test gas source, oil source and external pressure gauge to measure the gas pressure attenuation effect of starter, the inside of the joint (4) is hollow; Oil seal plate (7) is installed inside the tooling shell (1), for forming secondary sealing cavity (8) with the joint (4), starter output shaft seal ring to measure the oil seal effect of starter output shaft.

2. An engine starter air pressure decay and oil seal measurement tool as in claim 1, wherein: The inside of the tooling shell (1) is provided with tooling fixing hole (2) for connecting and fixing the starter, and the tooling fixing hole (2) is distributed circumferentially.

3. An engine starter air pressure decay and oil seal measurement tool as in claim 1, wherein: The middle of one side of the tooling shell (1) is provided with joint welding hole (3), and the joint (4) is installed in the joint welding hole (3).

4. An engine starter air pressure decay and oil seal measurement fixture as described in claim 3, wherein: The inside of the tooling shell (1) is provided with oil seal plate step (6), which is circular structure, and the oil seal plate step (6) is distributed with the same center axis as the joint welding hole (3).

5. An engine starter air pressure decay and oil seal measurement tool as in claim 4, wherein: The step surface of the oil seal plate step (6) is circumferentially distributed with several oil seal plate mounting holes (5).

6. An engine starter air pressure decay and oil seal measurement fixture as described in claim 1, wherein: The inside of the joint (4) is provided with hollow channel (41).

7. An engine starter air pressure decay and oil seal measurement fixture as described in claim 1, wherein: The inner hole side wall of the oil seal plate (7) is provided with seal ring groove (71).

8. An engine starter air pressure decay and oil seal measurement fixture as described in claim 1, wherein: The oil seal plate (7) is circumferentially distributed with several oil seal plate through holes (72), and the several oil seal plate through holes (72) are one-to-one corresponding to the several oil seal plate mounting holes (5).

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