CN218156865U - Test fixture for connecting split-ring valve and test bed - Google Patents

Abstract

The application discloses a test fixture for connecting divide circle valve and test bench includes: the clamp comprises a clamp main body and a clamping mechanism, wherein the clamp main body comprises an oil cavity; a plurality of hydraulic pipes, one of which is connected to an end of the jig main body and communicates with the oil chamber, the other of which is symmetrically disposed at both sides of the jig main body and communicates with the oil chamber, one of which serves as a backup hydraulic pipe, one end of which communicates with the oil chamber and the other end of which does not communicate with the outside; a connecting pipe having one end connected to the opposite end of the jig main body and communicating with the oil chamber and the other end connected to the test stand; and one end of each intermediate connecting piece is respectively communicated with the corresponding hydraulic pipe through a hose, and the other end of each intermediate connecting piece is respectively communicated with the corresponding joint of the fuel channel of the sub-ring valve. The test fixture can realize the connection of the split ring valve and the test bed, ensure the reliable sealing of the connecting joint and facilitate the installation.

Description

Test fixture for connecting split-ring valve and test bed

Technical Field

The application generally relates to the technical field of aeroengine maintenance, in particular to a test fixture for connecting a sub-ring valve and a test bed.

Background

Currently, a universal hydraulic test stand is commonly available in accessory workshops, but the test stand is equipped with various hoses and connectors which cannot meet the requirements for connecting the split-ring valve to the test stand. Specifically, the universal hydraulic test bed is provided with a universal switching hose, but the split-ring valve is provided with a plurality of fuel passages, a test fixture is needed to connect the split-ring valve with the test bed, and the test task cannot be completed without the test fixture. The hose connector of the existing test bed adopts inner and outer conical surfaces and threads for connection, and in order to ensure sealing, the angles of the inner and outer conical surfaces are required to be equal, so that the manufacturing cost is high, the yield is low, and leakage is easily caused in use. The connection is carried out through the inner and outer conical surfaces and the threads, and once the inner and outer conical surfaces which are matched are damaged, the maintenance is difficult to carry out.

SUMMERY OF THE UTILITY MODEL

In view of the above technical problem, the present disclosure provides a test fixture for connecting a split ring valve and a test bed, including: a clamp body including an oil cavity; a plurality of hydraulic pipes, one of which is connected to an end of the jig main body and communicates with the oil chamber, and the other of which is symmetrically disposed at both sides of the jig main body and communicates with the oil chamber, wherein one of the other of the plurality of hydraulic pipes serves as a backup hydraulic pipe, one end of which communicates with the oil chamber and the other end of which does not communicate with the outside; a connecting pipe having one end connected to an opposite end of the jig main body and communicating with the oil chamber and the other end connected to the test stand; and one end of each intermediate connecting piece is respectively communicated with the corresponding hydraulic pipe through a hose, and the other end of each intermediate connecting piece is respectively communicated with the corresponding joint of the fuel channel of the split valve.

In a preferred embodiment, the test fixture has 6 intermediate connectors, which are connected to the joints of 6 fuel passages of the test stand, respectively.

In a preferred embodiment, the clamp body is circular in cross-section.

In a preferred embodiment, the hose has internal tapered surfaces at both ends, the internal tapered surfaces having internal threads.

In a preferred embodiment, the end of the hydraulic tube connected to the hose has an outer spherical surface with an external thread, and the inner conical surface of the hose is engaged with the outer spherical surface of the hydraulic tube.

In a preferred embodiment, the hose further comprises a fastener to fasten the hose and the hydraulic pipe together.

In a preferred embodiment, the end of the intermediate connecting member communicating with the connection of the fuel passage has an internal conical surface with an internal thread.

In a preferred embodiment, the inner conical surface engages with an outer spherical surface of the joint of the fuel passage.

In a preferred embodiment, the intermediate connector further comprises a fastener to fasten the intermediate connector with the joint of the fuel passage.

Compared with the prior art, the beneficial effects of the disclosure are: the split ring valve is connected with the test bed, the joint can be guaranteed to be reliably sealed, the joint can normally work under the condition that the axes of the two joints are not parallel to a certain degree, and the joint is convenient to install.

Drawings

The novel features believed characteristic of the application are set forth with particularity in the appended claims. A better understanding of the features and advantages of the present application will be obtained by reference to the following detailed description that sets forth illustrative embodiments, in which the principles of the application are utilized, and the accompanying drawings. The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the application. Also, in the drawings, wherein like reference numerals refer to like elements throughout:

FIG. 1 shows a schematic view of a test fixture for connecting a split ring shutter and a test stand according to an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a cross-sectional view of a test fixture for connecting a split ring shutter and a test stand according to an exemplary embodiment of the present disclosure;

FIGS. 3 and 4 are schematic diagrams illustrating the connection relationship of a test fixture to a test stand according to an exemplary embodiment of the present disclosure; and

FIG. 5 shows a schematic view of the connection of the intermediate connectors of a test fixture by a hose according to an exemplary embodiment of the present disclosure.

Description of the reference numerals

The clamp comprises a clamp body 1, an oil cavity 2, a hydraulic pipe 3, a connecting pipe 4, a fastener 5, an intermediate connecting piece 6, a spare hydraulic pipe 7 and a hose 8.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Nothing in the following detailed description is intended to indicate that any particular component or feature is essential to the application. Those skilled in the art will appreciate that various features may be substituted for or combined with one another without departing from the scope of the present disclosure.

FIG. 1 shows a schematic view of a test fixture for connecting a split-ring shutter and a test stand according to an exemplary embodiment of the present disclosure. The present disclosure provides a test fixture for connecting a split-ring valve and a test stand, comprising: a clamp body 1, the clamp body 1 may include an oil chamber 2. The test fixture may further comprise a plurality of hydraulic tubes 3, each of the plurality of hydraulic tubes 3 may have a hollow cavity. One of the plurality of hydraulic pipes 3 is connected to an end of the jig main body 1 and communicates with the oil chamber 2, and the other of the plurality of hydraulic pipes 3 is symmetrically disposed on both sides of the jig main body 1 and communicates with the oil chamber 2, wherein one of the other of the plurality of hydraulic pipes 3 serves as a backup hydraulic pipe 7, one end of the backup hydraulic pipe 7 communicates with the oil chamber 2, and the other end does not communicate with the outside. Namely, one end of the spare hydraulic pipe 7 is communicated with the oil chamber 2, and the other end is blocked and is not communicated with the hose. The function of the backup hydraulic line 7 may include venting air from the test fixture during initial use until pressurized oil is discharged, and then plugging the backup hydraulic line 7. The test fixture may further comprise a connecting tube 4 and a plurality of intermediate connectors 6. One end of the connecting pipe 4 is connected to the opposite end of the jig main body 1 and communicates with the oil chamber 2, and the other end is connected to the test stand. Each of the plurality of intermediate connectors 6 may have a hollow cavity, one end of one of the plurality of intermediate connectors 6 communicates with a corresponding one of the plurality of hydraulic pipes 3 through a hose, and the other end of one of the plurality of intermediate connectors 6 communicates with a joint of a corresponding fuel passage of the split valve, so that the corresponding plurality of hydraulic pipes 3 (except for the backup hydraulic pipe 7) communicate with the joint of the corresponding plurality of fuel passages via the corresponding plurality of intermediate connectors 6. In this way, hydraulic oil from the split valve can flow to the test stand via the intermediate connection 6 and the hydraulic pipe 3 (except for the backup hydraulic pipe 7). Figure 2 illustrates a cross-sectional view of a test fixture for connecting a split ring shutter and a test stand according to an exemplary embodiment of the present disclosure. In some embodiments, the clamp body may be circular in cross-section, and the oil chamber may also be circular in cross-section. The cross-section of the clamp body or the cross-section of the oil chamber may also be rectangular, triangular or any shape deemed appropriate by the person skilled in the art.

Fig. 3 and 4 are schematic views illustrating a connection relationship of a test jig and a test stand according to an exemplary embodiment of the present disclosure. In a preferred embodiment, the test fixture may have 6 intermediate connectors, which are connected to the joints of 6 fuel passages (B, C, D, L, N and K) of the test rig, respectively. For example, 6 intermediate connectors as shown in FIG. 3 may be connected to the joints of 6 fuel passages (B, C, D, L, N and K) of the test rig, respectively, as shown in FIG. 4. The connection between the intermediate connection 6 and the hydraulic pipe 3 can be made by means of a hose.

Fig. 5 shows a schematic view of the intermediate connection 6 of a test fixture connected by a hose 8 according to an exemplary embodiment of the present disclosure. In a preferred embodiment, the intermediate connection 6 of the test fixture can be connected to the hydraulic pipe 3 by means of a hose 8. In a preferred embodiment, the hose 8 may have an inner tapered surface at both ends, the inner tapered surface having an internal thread. In some cases, the end of the hydraulic tube 3 connected to the hose 8 has an outer spherical surface with an external thread. The inner conical surfaces of the hoses 8 can be respectively engaged with the outer spherical surfaces of the hydraulic pipes 3 so as to ensure that the inner and outer conical surfaces can be reliably sealed, i.e. the hoses 8 and the hydraulic pipes 3 can be reliably sealed and can normally work under the condition that the axes of the ends (joints) of the hoses and the ends (joints) of the hydraulic pipes 3 are not parallel to each other (for example, not in a straight line). In a preferred embodiment, the hoses 8 may further include fasteners 5 to fasten the hoses 8 with the hydraulic pipes 3, respectively. In a preferred embodiment, the end of the intermediate connection piece 6 communicating with the connection of the fuel passage has an internal conical surface with an internal thread. In a preferred embodiment, the inner conical surface and the outer spherical surface of the fuel passage joint may be engaged together to ensure that the inner conical surface and the outer spherical surface are reliably sealed, i.e. the intermediate connector 6 and the fuel passage joint are reliably sealed and will function properly when the axes of the end of the intermediate connector 6 and the end of the fuel passage (joint) are not necessarily parallel (e.g. not in a straight line) (to accommodate manufacturing tolerances in the manufacture of the joints). In some embodiments, the axes of the two joints may be offset by ± 3 degrees or less or ± 2 degrees or less. Preferably, the axes of the two joints may be offset by ± 1 degree or less. In a preferred embodiment, the intermediate connection piece 6 may also comprise a fastening piece 5 to fasten the intermediate connection piece 6 with the joint of the fuel passage. In a preferred embodiment, the fastener 5 may be a nut. The inner conical surface and the outer spherical surface are matched in design, and a nut locking structure is further utilized, so that the positions of the joints are allowed to be automatically adjusted in the installation process, and the axes of the two matched joints are allowed to deflect by an angle, so that the installation is facilitated, and the requirement in the actual use process is met.

The technical scheme of this application adopts foretell test fixture, can realize being connected of dividing circle valve and test bench, guarantees that the joint between dividing circle valve and the test bench is reliably sealed to there is normal work under the condition of certain nonparallel in the axis of two joints, and the installation of being convenient for.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the disclosure may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

While exemplary embodiments of the present application have been shown and described herein, it will be readily understood by those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will now occur to those skilled in the art without departing from the application. It should be understood that various alternatives to the embodiments of the application described herein may be employed in practicing the application. It is intended that the following claims define the scope of the application and that structures within the scope of these claims and their equivalents be covered thereby.

Claims (9)

1. The utility model provides a test fixture for connecting divide circle valve and test bench which characterized in that includes:

a clamp body including an oil cavity;

a plurality of hydraulic pipes, one of which is connected to an end of the jig main body and communicates with the oil chamber, and the other of which is symmetrically disposed on both sides of the jig main body and communicates with the oil chamber, wherein one of the other of the plurality of hydraulic pipes serves as a backup hydraulic pipe, one end of which communicates with the oil chamber and the other end of which does not communicate with the outside;

a connecting pipe having one end connected to an opposite end of the jig main body and communicating with the oil chamber and the other end connected to the test stand; and

and one end of each intermediate connecting piece is respectively communicated with the corresponding hydraulic pipe through a hose, and the other end of each intermediate connecting piece is respectively communicated with the joint of the corresponding fuel channel of the split valve.

2. The test fixture of claim 1, wherein the test fixture has 6 intermediate connectors, the 6 intermediate connectors being connected to respective joints of 6 fuel passages of the test rig.

3. The trial clamp of claim 1, wherein the clamp body is circular in cross-section.

4. The test fixture of claim 1, wherein the hose has internal tapered surfaces at both ends, the internal tapered surfaces having internal threads.

5. The test fixture of claim 4, wherein the end of the hydraulic tube connected to the hose has an outer spherical surface with an external thread, and the inner conical surface of the hose engages the outer spherical surface of the hydraulic tube.

6. The test fixture of claim 5, wherein the hose further comprises a fastener to fasten the hose and the hydraulic tube together.

7. The test fixture of claim 1, wherein the end of the intermediate connector in communication with the nipple of the fuel passageway has an internal tapered surface with internal threads.

8. The test fixture of claim 7, wherein said inner tapered surface engages an outer spherical surface of a fitting of said fuel passageway.

9. The test fixture of claim 8, wherein the intermediate connector further comprises a fastener to fasten the intermediate connector with the nipple of the fuel passage.

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