Rigidity testing tool for corrugated pipe elastic load equivalent device

Abstract

The utility model relates to the technical field of corrugated pipe elastic load detection, in particular to a corrugated pipe elastic load equivalent device rigidity testing tool which comprises a loading cylinder, a base, a force sensor, a connecting seat and a tilt angle sensor. One end of the loading cylinder is hinged with the base, the other end of the loading cylinder is connected with the force sensor, the force sensor is hinged with the connecting seat, the connecting seat is fixedly connected with one end of the corrugated pipe elastic load equivalent device, and the other end of the corrugated pipe elastic load equivalent device is fixedly connected with the base; and the tilt angle sensor is fixedly mounted on the connecting seat. According to the invention, the rigidity of the corrugated pipe elastic load equivalent device can be tested.

Description

Technical Field

[0001] The present disclosure relates to the technical field of bellows elastic load detection, and in particular to a bellows elastic load equivalent device stiffness test tool. Background Art

[0002] The power of a liquid rocket comes from a liquid engine installed at its tail end. Liquid rocket engines rely on converting the heat and pressure energy generated by the reactions of various propellants inside the rocket into kinetic energy to obtain thrust in real time. During the conversion process, the high-temperature, high-pressure gas generated by the propellant reaction will reach the engine thrust chamber through the gas hose on the engine. The gas hose has a significant increase in stiffness under the ramming state. When the engine is in a swinging spray state, the gas hose will also deform, thereby generating an elastic load on the servo mechanism. In the engine load simulation test, the elastic torque generated by an equivalent elastic element is generally used to simulate the elastic torque that the engine is subjected to under actual working conditions. The existing publication number CN116202776A discloses a bellows elastic load equivalent device, and how to perform a stiffness test on it is a problem that currently needs to be solved. Summary of the invention

[0003] The present disclosure is proposed in view of the above problems. The present disclosure provides a bellows elastic load equivalent device stiffness test tool.

[0004] According to one aspect of the present disclosure, a bellows elastic load equivalent device stiffness test fixture is provided, which includes a loading cylinder, a base, a force sensor, a connecting seat and an inclination sensor;

[0005] One end of the loading cylinder is hinged to the base, and the other end is connected to the force sensor, the force sensor is hinged to the connecting seat, the connecting seat is fixedly connected to one end of the bellows elastic load equivalent device, and the other end of the bellows elastic load equivalent device is fixedly connected to the base;

[0006] The inclination sensor is fixedly mounted on the connecting seat.

[0007] A bellows elastic load equivalent device stiffness test fixture as described above, wherein preferably, the connecting seat comprises a flange and a connecting plate, the flange is fixedly connected to one end of the bellows elastic load equivalent device, the connecting plate is fixedly mounted on a side of the flange away from the bellows elastic load equivalent device, and the connecting plate is hinged to the force sensor;

[0008] The inclination sensor is fixedly mounted on the flange.

[0009] In addition, a bellows elastic load equivalent device stiffness testing tool according to one aspect of the present disclosure further includes: the connecting plate is tilted.

[0010] In addition, a bellows elastic load equivalent device stiffness testing tool according to one aspect of the present disclosure further includes: the force sensor is hinged to the connecting plate through a front support ear flange.

[0011] In addition, according to one aspect of the present disclosure, a bellows elastic load equivalent device stiffness testing tool also includes: a loading cylinder adapter, the loading cylinder adapter includes a connecting head and a connecting rod, one end of the connecting head is fixedly connected to the connecting rod, and the other end is provided with a first clamping block and a second clamping block, a reserved gap and a first mounting hole are formed between the first clamping block and the second clamping block, the piston rod of the loading cylinder is installed in the first mounting hole, and the first clamping block and the second clamping block are connected by a fastening screw; the connecting rod is inserted into the force sensor.

[0012] In addition, according to one aspect of the present disclosure, a bellows elastic load equivalent device stiffness testing tool also includes a locking ring, which is sleeved on the connecting rod, one end of the locking ring abuts against the connecting head, and the other end abuts against the force sensor.

[0013] In addition, a bellows elastic load equivalent device stiffness test fixture according to one aspect of the present disclosure further includes: the loading cylinder is hinged to the base through a mounting seat;

[0014] The mounting base includes a bottom plate and a connecting ear, the bottom plate is fixedly connected to the base; the connecting ear is fixedly mounted on the bottom plate, a rear support ear flange is mounted on the loading cylinder, and the rear support ear flange is rotatably connected to the connecting ear via a connecting shaft.

[0015] In addition, according to one aspect of the present disclosure, a bellows elastic load equivalent device stiffness test tool also includes: a T-slot is opened on the upper surface of the base, a second screw hole is arranged on the bottom plate, and the bottom plate is fixedly connected to the base by screws passing through the T-slot and the second screw hole.

[0016] In addition, according to one aspect of the present disclosure, a bellows elastic load equivalent device stiffness testing tool also includes: a support plate is fixedly installed at one end of the bellows elastic load equivalent device, a third screw hole is opened on the support plate, and the support plate is fixedly connected to the base by screws passing through the T-slot and the third screw hole.

[0017] In addition, a bellows elastic load equivalent device stiffness test tool according to one aspect of the present disclosure further includes: a linear channel servo valve is provided on the loading cylinder.

[0018] As will be described in detail below, according to an embodiment of the present disclosure, a bellows elastic load equivalent device stiffness testing tool is provided, in which one end of a loading cylinder is hinged to a base, and the other end is hinged to a connecting seat through a force sensor, the connecting seat is fixedly connected to one end of the bellows elastic load equivalent device, and the other end of the bellows elastic load equivalent device is fixedly connected to the base; the inclination sensor is fixedly installed on the connecting seat, and the stiffness of the bellows elastic load equivalent device can be conveniently and quickly tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other purposes, features and advantages of the present disclosure will become more apparent by describing the embodiments of the present disclosure in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 yes Figure 1 main view.

[0022] Figure 3 yes Figure 1 Top view of the .

[0023] Figure 4 yes Figure 3 Sectional view of AA.

[0024] Figure 5 It is a schematic diagram of the structure of the loading cylinder adapter.

[0025] Figure 6 It is a schematic diagram of the structure of the base.

[0026] Description of reference numerals:

[0027] 1-loading cylinder, 2-base, 3-force sensor, 4-connecting seat, 5-bellows elastic load equivalent device, 41-flange, 42-connecting plate, 6-front support ear flange, 7-loading cylinder adapter, 71-connecting head, 72-connecting rod, 711-first clamping block, 722-second clamping block, 8-reserved gap, 9-first mounting hole, 10-locking ring, 11-mounting seat, 111-bottom plate, 112-connecting ear, 12-rear support ear flange, 13-connecting shaft, 21-T-slot, 113-second screw hole, 14-support plate, 15-linear channel servo valve, 16-fastening screw. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present disclosure more obvious, the exemplary embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited to the exemplary embodiments described here.

[0029] like Figure 1-Figure 6 As shown, the present disclosure proposes a bellows elastic load equivalent device stiffness test fixture, which includes a loading cylinder 1, a base 2, a force sensor 3, a connecting seat 4 and an inclination sensor;

[0030] One end of the loading cylinder 1 is hinged to the base 2, and the loading cylinder 1 can swing up and down along the hinge point. The other end of the loading cylinder 1 is connected to the force sensor 3. The loading cylinder 1 and the force sensor 3 can be fixedly connected or detachably connected. The loading cylinder 1 is provided with a linear channel servo valve 15. The force sensor 3 is hinged to the connecting seat 4, and the rotation center line of the hinge between the force sensor 3 and the connecting seat 4 is parallel to the rotation center line of the hinge between the loading cylinder 1 and the base 2; the connecting seat 4 is fixedly connected to one end of the bellows elastic load equivalent device 5 by bolts, and the other end of the bellows elastic load equivalent device 5 is fixedly connected to the base 2 by bolts or screws; in specific implementation, the base 2 can use a linear base, and the base 2 is fixed on the industrial foot to avoid the base 2 from moving during the test and affecting the test results.

[0031] The inclination sensor is fixedly mounted on the connection seat 4 by screws, and the inclination sensor and the connection seat 4 can also be fixedly connected by gluing. The pressure of the hydraulic oil in the loading cylinder 1 is controlled by the linear channel servo valve 15, thereby controlling the output force of the loading cylinder 1, and the output force is transmitted to the bellows elastic load equivalent device 5 through the connection seat 4.

[0032] The force sensor 3 measures the force output by the loading cylinder 1, and the inclination sensor is used to measure the inclination angle of the bellows elastic load equivalent device 5. The bending stiffness of the bellows elastic load equivalent device 5 is calculated based on the output force of the loading cylinder 1 and the inclination angle of the bellows elastic load equivalent device 5.

[0033] As an implementation mode, the connection seat 4 includes a flange 41 and a connection plate 42, the flange 41 is fixedly connected to one end of the bellows elastic load equivalent device 5, the connection plate 42 is fixedly mounted on a side of the flange 41 away from the bellows elastic load equivalent device 5 by welding, and the connection plate 42 is hinged to the force sensor 3;

[0034] The inclination sensor is fixedly mounted on the flange 41 by screws. In order to facilitate the arrangement of the loading cylinder 1 on the side of the bellows elastic load equivalent device 5 , the connecting plate 42 can be arranged at an angle, and the connecting plate 42 can be arranged near the edge of the flange 41 .

[0035] The force sensor 3 is hinged to the connecting plate 42 through a front support ear flange 6. Specifically, the force sensor 3 is fixedly connected to the front support ear flange 6 by screws, there are two connecting plates 42, the two connecting plates 42 are arranged in parallel, a second mounting hole is opened on the connecting plate 42, the support ear of the front support ear flange 6 is located between the two connecting plates 42, and the support ear is rotatably connected to the connecting plate 42 by passing a bolt through the second mounting hole and the mounting hole on the support ear.

[0036] According to another aspect of the present disclosure, see Figure 4-Figure 6 As shown, it should be pointed out that Figure 4 The bellows elastic load equivalent device 5 is a schematic diagram rather than a cross-sectional view. In order to facilitate the connection between the loading cylinder 1 and the force sensor 3, a loading cylinder adapter 7 is also included. The loading cylinder adapter 7 includes a connector 71 and a connecting rod 72. One end of the connector 71 is fixedly connected to the connecting rod 72, and the other end is provided with a first clamping block 711 and a second clamping block 722. A reserved gap 8 and a first mounting hole 9 are formed between the first clamping block 711 and the second clamping block 722. The center line of the first mounting hole 9 coincides with the axis of the connecting rod 72. The piston rod of the loading cylinder 1 is installed in the first mounting hole 9. The first clamping block 711 and the second clamping block 722 are connected by a fastening screw 16 to fix the piston rod in the loading cylinder adapter 7. The connecting rod 72 is inserted into the force sensor 3.

[0037] The locking ring 10 is also included. The locking ring 10 is sleeved on the connecting rod 72. One end of the locking ring 10 abuts against the connecting head 71, and the other end abuts against the force sensor 3. The locking ring 10 is used to eliminate the axial clearance of the loading cylinder 1.

[0038] In order to facilitate the connection between the loading cylinder 1 and the base 2, the loading cylinder 1 is hinged to the base 2 through a mounting base 11;

[0039] The mounting base 11 includes a bottom plate 111 and a connecting ear 112. The bottom plate 111 is fixedly connected to the base 2 by bolts. The connecting ear 112 is fixedly installed on the bottom plate 111 by welding. A rear support ear flange 12 is installed on the loading cylinder 1. The rear support ear flange 12 is rotatably connected to the connecting ear 112 by a connecting shaft 13.

[0040] In order to increase the height of the loading cylinder 1, a pad can be set on the bottom plate 111 by welding, and the connecting ear 112 can be fixedly mounted on a pad by welding, and the pad and the pad are connected by screws.

[0041] In order to facilitate the adjustment of the distance between the mounting seat 11 and the bellows elastic load equivalent device 5, a T-slot 21 is provided on the upper surface of the base 2, and a second screw hole 113 is provided on the bottom plate 111. The bottom plate 111 is fixedly connected to the base 2 by screws passing through the T-slot 21 and the second screw hole 113.

[0042] A support plate 14 is fixedly mounted on one end of the bellows elastic load equivalent device 5 by screws. A third screw hole is opened on the support plate 14. The support plate 14 is fixedly connected to the base 2 by screws passing through the T-slot 21 and the third screw hole.

[0043] In the actual simulation process, it is necessary to measure the bending stiffness of the bellows elastic load equivalent device 5 in three directions: pitch, yaw and the angular bisector of pitch and yaw. For example, after the bending stiffness in the pitch direction is measured, the bellows elastic load equivalent device 5 is removed from the connecting seat 4 and the support plate 14, and the angle of the bellows elastic load equivalent device 5 is adjusted and then fixed to the connecting seat 4 and the support plate 14, and then the bending stiffness in the yaw direction is measured. The measurement of the bending stiffness in the direction of the angular bisector of pitch and yaw is the same as the measurement of the bending stiffness in the yaw direction.

[0044] The basic principles of the present disclosure are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present disclosure are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present disclosure. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, and are not limitations. The above details do not limit the present disclosure to the necessity of adopting the above specific details to be implemented.

[0045] The block diagrams of the devices, apparatuses, equipment, and systems involved in this disclosure are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including," "comprising," "having," and the like are open words, referring to "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or," and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0046] Additionally, as used herein, "or" used in a list of items beginning with "at least one" indicates a separate list, so that, for example, a list of "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not mean that the example described is preferred or better than other examples.

[0047] It should also be noted that in the system and method of the present disclosure, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present disclosure.

[0048] Various changes, substitutions, and modifications of the techniques described herein may be made without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of the present disclosure is not limited to the specific aspects of the processes, machines, manufactures, compositions of events, means, methods, and actions described above. Currently existing or later to be developed processes, machines, manufactures, compositions of events, means, methods, or actions that perform substantially the same functions or achieve substantially the same results as the corresponding aspects described herein may be utilized. Thus, the appended claims include such processes, machines, manufactures, compositions of events, means, methods, or actions within their scope.

[0049] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0050] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A bellows elastic load equivalent device stiffness test tool, characterized by: It comprises a loading cylinder (1), a base (2), a force sensor (3), a connecting base (4) and an inclination sensor; One end of the loading cylinder (1) is hinged to the base (2), and the other end is connected to the force sensor (3); the force sensor (3) is hinged to the connecting seat (4); the connecting seat (4) is fixedly connected to one end of the bellows elastic load equivalent device (5); and the other end of the bellows elastic load equivalent device (5) is fixedly connected to the base (2); The inclination sensor is fixedly mounted on the connecting seat (4).

2. The bellows elastic load equivalent device stiffness test tool as claimed in claim 1, characterized in that: The connecting seat (4) comprises a flange (41) and a connecting plate (42), wherein the flange (41) is fixedly connected to one end of the bellows elastic load equivalent device (5), and the connecting plate (42) is fixedly mounted on a side of the flange (41) away from the bellows elastic load equivalent device (5), and the connecting plate (42) is hinged to the force sensor (3); The inclination sensor is fixedly mounted on the flange (41).

3. The bellows elastic load equivalent device stiffness test tool as claimed in claim 2, characterized in that: The connecting plate (42) is arranged obliquely.

4. The bellows elastic load equivalent device stiffness test tool as claimed in claim 2, characterized in that: The force sensor (3) is hingedly connected to the connecting plate (42) via a front support ear flange (6).

5. The bellows elastic load equivalent device stiffness test tool as claimed in claim 3, characterized in that: It also includes a loading cylinder adapter (7), the loading cylinder adapter (7) including a connecting head (71) and a connecting rod (72), one end of the connecting head (71) is fixedly connected to the connecting rod (72), and the other end is provided with a first clamping block (711) and a second clamping block (722), a reserved gap (8) and a first mounting hole (9) are formed between the first clamping block (711) and the second clamping block (722), the piston rod of the loading cylinder (1) is installed in the first mounting hole (9), and the first clamping block (711) and the second clamping block (722) are connected by a fastening screw (16); the connecting rod (72) is inserted into the force sensor (3).

6. The bellows elastic load equivalent device stiffness test tool as claimed in claim 5, characterized in that: It also comprises a locking ring (10), wherein the locking ring (10) is sleeved on the connecting rod (72), one end of the locking ring (10) abuts against the connecting head (71), and the other end abuts against the force sensor (3).

7. The bellows elastic load equivalent device stiffness test tool as claimed in claim 1, characterized in that: The loading cylinder (1) is hingedly connected to the base (2) via a mounting seat (11); The mounting seat (11) comprises a bottom plate (111) and a connecting ear (112), wherein the bottom plate (111) is fixedly connected to the base (2); the connecting ear (112) is fixedly mounted on the bottom plate (111), and a rear supporting ear flange (12) is mounted on the loading cylinder (1), wherein the rear supporting ear flange (12) is rotatably connected to the connecting ear (112) via a connecting shaft (13).

8. The bellows elastic load equivalent device stiffness test tool as claimed in claim 7, characterized in that: The upper surface of the base (2) is provided with a T-shaped slot (21), the bottom plate (111) is provided with a second screw hole (113), and the bottom plate (111) is fixedly connected to the base (2) by screws passing through the T-shaped slot (21) and the second screw hole (113).

9. The bellows elastic load equivalent device stiffness test tool as claimed in claim 8, characterized in that: A support plate (14) is fixedly mounted on one end of the bellows elastic load equivalent device (5), a third screw hole is provided on the support plate (14), and the support plate (14) is fixedly connected to the base (2) by screws passing through the T-slot (21) and the third screw hole.

10. The bellows elastic load equivalent device stiffness test tool as claimed in claim 1, characterized in that: The loading cylinder (1) is provided with a linear channel servo valve (15).

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