A fixing tool for plunger test

Abstract

The utility model discloses a kind of fixed tool for plunger test, including support and fixed assembly, support forms a ladder groove;Fixed assembly is installed on support, fixed assembly has a telescopic end towards ladder groove arrangement, telescopic end and ladder groove cooperate and hold plunger cap.The fixed tool for plunger test provided by the utility model realizes the fixation of plunger by the telescopic end of fixed assembly and ladder groove cooperation and hold plunger cap, after plunger is fixed on the tool by measuring personnel, contour gauge is operated to measure, after testing is completed, plunger can be removed by loosening telescopic end;By the quick and reliable fixation of plunger, single person can complete the measurement work of plunger cap, and plunger is not easy to damage in testing process.

Description

Technical Field

[0001] This utility model relates to the field of plunger testing technology, specifically to a fixed fixture for plunger testing. Background Technology

[0002] As the "heart" of an aircraft, the combined drive generator's main function is to provide a stable power output. The pump motor assembly, as one of the core components of the combined drive generator, has a significant impact on the performance of the entire product. Therefore, it is crucial to inspect and measure the plunger in the pump motor assembly during product repair.

[0003] The plunger consists of a plunger cap and a plunger body. Currently, most methods on the market use profilometers to measure the plunger cap's relief groove. However, because the plunger cap and plunger body are connected by a ball-and-socket structure, they are relatively moving parts. Furthermore, the plunger cap is small, with a diameter of only 11.5mm and a thickness of only 1.6mm, making it difficult to fix. Currently, we use a 45° angled circular groove fixture to position the plunger cap, and then use a profilometer to measure the plunger cap's relief groove.

[0004] During use, this tooling requires the operator to continuously press the plunger with their hand. Any loosening can cause measurement errors, or even plunger detachment and damage, affecting not only the quality of the measurement work but also potentially rendering the plunger unusable and resulting in economic losses. Furthermore, when operating the profilometer, the operator must simultaneously hold the plunger in place with one hand and operate the device's mouse, resulting in poor operability and often requiring two people to work together, leading to significant labor costs. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a fixed fixture for plunger testing, which solves the technical problem that plungers are difficult to fix in the prior art, making it difficult for a single person to complete the plunger measurement work.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] Firstly, this utility model provides a fixing fixture for plunger testing, comprising:

[0008] The support forms a stepped groove;

[0009] A fixing component is mounted on the support and has a telescopic end arranged toward the stepped groove, the telescopic end cooperating with the stepped groove to clamp the plunger cap.

[0010] In some embodiments, the fixing assembly includes a housing, a fixing member, and an elastic member. The housing is connected to the support, the fixing member is connected to the housing via the elastic member, the fixing member has the telescopic end, the elastic member is arranged toward the stepped groove, and the elastic member provides elasticity to cause the fixing member to engage with the stepped groove to clamp the plunger cap.

[0011] In some embodiments, the housing forms a receiving hole facing the stepped groove, and the elastic element is arranged within the receiving hole.

[0012] In some embodiments, the receiving hole is a stepped through hole, the fixing member is arranged through the receiving hole, one end of the elastic member abuts against the telescopic end, and the other end abuts against the step of the stepped through hole.

[0013] In some embodiments, the shape of the telescopic end matches the stepped groove, and the end of the fixing member away from the telescopic end is bent to form a handle.

[0014] In some embodiments, the housing is further formed with a travel groove for receiving the grip; the elastic element is a spring sleeved on the fixing element.

[0015] In some embodiments, the support has a mounting hole facing the stepped groove, and the fixing component is mounted in the mounting hole.

[0016] In some embodiments, an internal thread is formed in the mounting hole, and a corresponding external thread is formed on the outer surface of the housing, and the housing is connected to the mounting hole.

[0017] In some embodiments, the support further includes a support platform located on the opposite side of the stepped groove away from the mounting hole, the support platform being used to support the plunger body.

[0018] In some embodiments, the stepped groove is an arc-shaped groove with an angle in the range of 120°-180°.

[0019] Compared with the prior art, the plunger testing fixture provided by this utility model fixes the plunger by using the telescopic end of the fixing component to clamp the plunger cap with the stepped groove. The measuring personnel fix the plunger on this fixture and then operate the profilometer to measure. After the test is completed, the plunger can be removed by releasing the telescopic end. With quick and reliable fixation of the plunger, a single person can complete the measurement of the plunger cap, and the plunger is not easily damaged during the test. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the plunger testing fixture provided in this embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the plunger testing fixture after the plunger is fixed according to an embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional view of the plunger testing fixture provided in this embodiment of the utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] To address the technical problem of difficulty in fixing the plunger, which makes it difficult for a single person to complete the plunger measurement work, this utility model provides a fixing fixture for plunger testing, which can quickly and reliably fix the plunger, so that a single person can complete the measurement work, and the plunger is not easily damaged during the measurement process.

[0025] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the fixing fixture for plunger testing in one embodiment of the present invention. Figure 2 This is a schematic diagram of the structure after the plunger is fixed in place using the fixture for this plunger test. Figure 3 This is a cross-sectional view of the fixture used for this plunger test.

[0026] The fixture for plunger testing includes: support 1 and fixing component 2.

[0027] The support 1 forms a stepped groove 11. The fixing component 2 is installed on the support 1. The fixing component 2 has a telescopic end 21 facing the stepped groove 11. The telescopic end 21 has a telescopic function and can cooperate with the stepped groove 11 to clamp or loosen the plunger cap 3, thereby fixing the plunger. After fixing, the measuring personnel can use a profilometer or other testing instruments to measure the relief groove on the plunger cap 3.

[0028] In some embodiments, the stepped groove 11 is an arc-shaped groove with an angle ranging from 120° to 180°. The angle of the stepped groove 11 cannot be too small; otherwise, the contact area with the plunger cap 3 will be too small, failing to securely fix the plunger cap 3. Simultaneously, the angle of the stepped groove 11 cannot be too large; otherwise, it will be inconvenient to measure and remove the plunger cap 3. Therefore, an angle of 120° to 180° is preferred. Within this range, the plunger cap 3 can be securely fixed while leaving two sides for measurement and plunger removal / removal, respectively. For example, the detection end of the measuring instrument can be positioned at the top for measurement. Plunger removal / removal can be performed from the reserved sides, thus avoiding interference with the measuring instrument.

[0029] In some embodiments, the support 1 has a mounting hole facing the stepped groove 11, and the fixing component 2 is installed in the mounting hole. The fixing component 2 and the mounting hole are preferably connected in a movable manner to facilitate adjustment of the position of the fixing component 2.

[0030] In a preferred embodiment, an internal thread is formed in the mounting hole, and a corresponding external thread is formed on the outer surface of the fixing component 2, which are connected by the engagement of the internal and external threads. By screwing, the distance between the telescopic end and the stepped groove 11 can be adjusted, thereby adjusting the clamping force applied by the telescopic end to the plunger cap 3.

[0031] In some embodiments, the support 1 further has a platform 12 located on the other side of the stepped groove 11 away from the mounting hole, and the platform 12 is used to support the plunger body 4.

[0032] In some embodiments, the fixing component 2 includes a housing 22, a fixing member 23, and an elastic member 24, with the housing 22 connected to the support 1. Specifically, in this embodiment, the outer surface of the housing 22 has external threads that mate with mounting holes. The fixing member 23 is connected to the housing 22 via the elastic member 24, and the fixing member 23 has a telescopic end 21. The elastic member 24 is arranged facing the stepped groove 11. By compressing the elastic member 24, the elastic member 24 exerts its elastic force to cause the fixing member 23 to engage with the stepped groove 11 and clamp the plunger cap 3.

[0033] In some embodiments, the housing 22 forms a receiving hole facing the stepped groove 11, and the elastic member 24 is arranged in the receiving hole.

[0034] In some embodiments, the receiving hole is a stepped through hole, the fixing member 23 is arranged through the receiving hole, one end of the elastic member 24 abuts against the telescopic end 21, and the other end abuts against the step of the stepped through hole.

[0035] In some embodiments, the shape of the telescopic end 21 matches the stepped groove 11, which is an arc-shaped groove, and the telescopic end 21 adopts a circular structure with the same radius. The end of the fixing member 23 away from the telescopic end 21 is bent to form a handle 231, so that the measuring personnel can pull the fixing member 23.

[0036] In a preferred embodiment, the housing 22 also has a travel groove 221 for accommodating the grip. The elastic element 24 is a spring fitted onto the fixing element 23.

[0037] To better understand this utility model, the following is combined with... Figures 1 to 3 The technical solution of this utility model is described in detail below:

[0038] During measurement, pull the handle 231 to separate the telescopic end 21 from the stepped groove 11, place the plunger on the support 1, and ensure that the edge of the plunger cap 3 is embedded in the stepped groove 11. Release the handle 231, and the telescopic end 21 will press the plunger cap 3 firmly into the stepped groove 11, thus fixing the plunger cap 3. Then, the measuring personnel operate the instrument to perform the measurement. After the measurement is completed, pull the handle 231 again to separate the telescopic end 21 from the stepped groove 11, remove the plunger, and place it in the designated position. This completes the measurement of one plunger cap 3 relief groove.

[0039] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A fixture for plunger testing, characterized in that, include: The support forms a stepped groove; A fixing component is mounted on the support and has a telescopic end arranged toward the stepped groove, the telescopic end cooperating with the stepped groove to clamp the plunger cap. The fixing component includes a housing, a fixing member, and an elastic member. The housing is connected to the support, and the fixing member is connected to the housing through the elastic member. The fixing member has the telescopic end, and the elastic member is arranged facing the stepped groove. The elastic member provides elastic force to make the fixing member cooperate with the stepped groove to clamp the plunger cap.

2. The fixture for plunger testing according to claim 1, characterized in that, The housing forms a receiving hole facing the stepped groove, and the elastic element is arranged in the receiving hole.

3. The fixture for plunger testing according to claim 2, characterized in that, The receiving hole is a stepped through hole, the fixing member is arranged through the receiving hole, one end of the elastic member abuts the telescopic end, and the other end abuts the step of the stepped through hole.

4. The fixture for plunger testing according to claim 3, characterized in that, The shape of the telescopic end matches the stepped groove, and the end of the fixing member away from the telescopic end is bent to form a handle.

5. The fixture for plunger testing according to claim 4, characterized in that, The housing also has a travel groove for accommodating the grip; the elastic element is a spring sleeved on the fixing element.

6. The fixture for plunger testing according to claim 1, characterized in that, The support has a mounting hole facing the stepped groove, and the fixing component is installed in the mounting hole.

7. The fixture for plunger testing according to claim 6, characterized in that, An internal thread is formed in the mounting hole, and a corresponding external thread is formed on the outer side of the housing. The housing is connected to the mounting hole.

8. The fixture for plunger testing according to claim 6, characterized in that, The support also has a support platform located on the other side of the stepped groove away from the mounting hole, the support platform being used to support the plunger body.

9. The fixture for plunger testing according to claim 1, characterized in that, The stepped groove is an arc-shaped groove with an angle in the range of 120°-180°.

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