Fatigue testing device for block dampers

Abstract

This invention proposes a fatigue testing device for block dampers, comprising a first clamp, a second clamp, and a lateral force loading monitoring system. The first clamp holds the block damper in a first direction, and the second clamp holds the block damper located at the clamping position in a second direction, perpendicular to the first direction. The lateral force loading monitoring system connects the two block dampers respectively positioned at the two clamping positions and applies a lateral force to the block dampers, which is parallel to the second direction. This invention's block damper fatigue testing device can simultaneously test two block dampers by clamping them between the first and second clamps. The lateral force loading monitoring system is integrated between the two block dampers. During the test, the change in lateral force depends on the properties of the rubber cast inside the block damper, better reflecting the actual working state of the block damper.

Description

Technical Field

[0001] This invention relates to the field of damper performance testing technology, and in particular to a fatigue testing device for block dampers. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Block dampers are key functional components of helicopter rotor systems. During helicopter flight, the block damper is subjected to axial forces. Under the action of these axial forces, the inner and outer joints move relative to each other along the axial direction at a certain frequency, and a constant lateral force exists between the inner and outer joints. Under the combined effect of axial and lateral forces, the block damper will experience fatigue failure. Therefore, simulating the working state of the block damper through experiments and determining its reasonable operating time is of great significance for helicopter flight safety and cost control. Fatigue testing is also an important means of studying the structural, material, and process improvements of block dampers.

[0004] In existing testing techniques, only one block damper can be tested at a time, which is time-consuming and inefficient. Furthermore, since lateral forces are applied by hanging weights during the test of a single block damper, the reaction force acts on the frame and fixtures of the testing machine, which can easily damage the fixtures and accelerate the wear of the piston seals, leading to oil leakage. Summary of the Invention

[0005] The objective of this invention is to at least solve the problem of low fatigue testing efficiency of existing block dampers. This objective is achieved through the following technical solution:

[0006] This invention proposes a fatigue testing device for a block damper, comprising:

[0007] The first clamp has two clamping positions for placing the block damper, and the first clamp is used to clamp the block damper in a first direction;

[0008] A second clamp is used to clamp the block damper located at the clamping position in a second direction, the second direction being perpendicular to the first direction;

[0009] A lateral force loading monitoring system is used to connect two block dampers respectively disposed in two clamping positions, and the lateral force loading monitoring system is used to apply a lateral force to the block dampers along the second direction.

[0010] The fatigue testing apparatus for block dampers proposed in this invention includes a first clamp, a lateral force loading monitoring system, and a second clamp. Two block dampers can be tested simultaneously. The block dampers are clamped between the first and second clamps, and the lateral force loading monitoring system is integrated between the two block dampers. During the test, the change in lateral force depends on the properties of the rubber cast inside the block damper, which better reflects the actual working state of the block damper. The magnitude of the lateral force is measured by a sensor placed between the two block dampers and displayed on a digital display. This invention provides a block damper testing apparatus that allows for the simultaneous testing of two block dampers with mutually canceling lateral forces, saving testing time, improving testing efficiency, eliminating damage to the testing apparatus from lateral forces, and extending the service life of the testing apparatus.

[0011] In addition, the block damper fatigue testing apparatus according to the present invention may also have the following additional technical features:

[0012] In some embodiments of the present invention, the first clamp includes:

[0013] The clamping body has a mounting hole that extends through the clamping body along a third direction, which is perpendicular to the first direction and the second direction, respectively. The two clamping positions are located at the two axial ends of the mounting hole.

[0014] Two clamping blocks are respectively disposed at both ends of the mounting hole, and the clamping blocks are used to clamp the block damper in the first direction.

[0015] In some embodiments of the present invention, the card block assembly includes:

[0016] Two locking blocks are respectively disposed on both sides of the mounting hole along the first direction;

[0017] Two first adjusting members are respectively connected to the two card blocks. The card blocks are connected to the clamping body through the first adjusting members. The first adjusting members are used to adjust the position of the card blocks relative to the clamping body along the first direction.

[0018] In some embodiments of the present invention, the second clamp includes;

[0019] Base;

[0020] Two clamping plate assemblies are disposed on the base, and the positions of the two clamping plate assemblies correspond to the two clamping positions respectively. The clamping plate assemblies are used to clamp the block damper in the second direction.

[0021] In some embodiments of the present invention, the clamp assembly includes:

[0022] Two upright plates are disposed on the base, and the two upright plates are spaced apart along the second direction;

[0023] Two splints;

[0024] Two second adjusting members are provided, and the two clamping plates are respectively connected to the two upright plates through one of the second adjusting members. The second adjusting members are used to adjust the relative position of the clamping plates and the upright plates along the second direction.

[0025] In some embodiments of the present invention, the first clamp further includes a guide rod, one end of which is connected to the clamp body and the other end of which extends away from the clamp body along the first direction. The second clamp further includes a guide sleeve, which is connected to the base and extends along the first direction. At least a portion of the guide sleeve and the upright plate are located on the same side of the base along the second direction. The guide rod is inserted into the guide sleeve in a pluggable manner.

[0026] In some embodiments of the present invention, the base is provided with a insertion hole, the guide sleeve is inserted into the insertion hole, both ends of the guide sleeve extend away from the base along the second direction, and the end of the guide sleeve away from the clamping plate assembly is provided with a connection hole. The second clamp further includes:

[0027] A pin is inserted through the connecting hole;

[0028] A spherical plain bearing, wherein the inner ring of the spherical plain bearing is fitted onto the pin;

[0029] A cotter pin is fitted onto the outer ring of the spherical bearing;

[0030] A locking nut is fitted onto the guide sleeve, the guide sleeve has an external thread, the locking nut is screwed onto the external thread, and the locking nut can move axially along the guide sleeve to abut against the base.

[0031] In some embodiments of the present invention, the lateral force loading monitoring system includes:

[0032] The first fastener is used to connect to one of the said block dampers;

[0033] The second fastener is used to connect to another of the said block dampers;

[0034] A shaft assembly, the two ends of which are respectively connected to the first tensioning block and the second tensioning block;

[0035] A sensor, connected to the shaft assembly, is used to detect the force exerted on the shaft assembly along the third direction;

[0036] A loading component is used to apply a force along the third direction to the shaft assembly to drive the second tension block closer to the first tension block.

[0037] In some embodiments of the present invention, the second tensioning block is provided with a connecting screw hole extending along the third direction, the connecting screw hole penetrating the second tensioning block, and the shaft assembly includes:

[0038] The support rod is connected at both ends to the first tensioning block and the sensor, respectively.

[0039] A force transmission rod is coaxially arranged with the support rod, and one end of the force transmission rod is connected to the sensor;

[0040] The loading component includes:

[0041] A loading screw is screwed into the connecting screw hole, and one end of the loading screw is connected to the other end of the force transmission rod;

[0042] A locking screw is screwed into the connecting screw hole and connected to the other end of the loading screw.

[0043] In some embodiments of the present invention, the clamp is provided with a wire hole, the wire hole communicates with the mounting hole, and the position of the wire hole corresponds to the sensor, and the support rod is used to rotatably connect to the first tensioning block. Attached Figure Description

[0044] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0045] Figure 1 A schematic diagram of the structure of an existing block damper is shown.

[0046] Figure 2 schematically shown Figure 1 Schematic diagram of the cross-sectional structure along the B-axis;

[0047] Figure 3 schematically shown Figure 1 A schematic diagram of the structure in direction A;

[0048] Figure 4 A schematic diagram of the overall structure of a block damper fatigue testing device according to an embodiment of the present invention is shown.

[0049] Figure 5 schematically shown Figure 4A schematic diagram of the cross-sectional structure along the E direction;

[0050] Figure 6 A schematic diagram of the structure of the first fixture of the block damper fatigue testing apparatus according to an embodiment of the present invention is shown from a first perspective.

[0051] Figure 7 A schematic diagram of the first fixture of the block damper fatigue testing apparatus according to an embodiment of the present invention is shown from a second perspective.

[0052] Figure 8 A schematic diagram of the first fixture of the block damper fatigue testing apparatus according to an embodiment of the present invention is shown from a third perspective.

[0053] Figure 9 A schematic diagram of the lateral force loading monitoring system of the block damper fatigue testing apparatus according to an embodiment of the present invention is shown.

[0054] Figure 10 A schematic diagram of the sensor wire lead-out structure of the block damper fatigue testing device according to an embodiment of the present invention is shown.

[0055] Figure 11 A schematic diagram of the second fixture of the block damper fatigue testing apparatus according to an embodiment of the present invention is shown from a first perspective.

[0056] Figure 12 A schematic diagram of the second fixture of the block damper fatigue testing apparatus according to an embodiment of the present invention is shown from a second perspective.

[0057] Figure 13 A schematic diagram of the second fixture of the block damper fatigue testing apparatus according to an embodiment of the present invention is shown from a third perspective.

[0058] Figure 14 The diagram schematically illustrates the first view of the structure of the first fixture and the block damper after assembly of the fatigue testing device for the block damper according to an embodiment of the present invention.

[0059] Figure 15 The diagram schematically illustrates a second-view structural schematic of the first fixture and the block damper after assembly of the fatigue testing apparatus for the block damper according to an embodiment of the present invention.

[0060] Figure 16 schematically shown Figure 15 A schematic diagram of the cross-sectional structure along the F direction;

[0061] Figure 17A schematic cross-sectional view of the first fixture and the lateral force loading monitoring system of the block damper fatigue testing device according to an embodiment of the present invention is shown.

[0062] The attached figures are labeled as follows:

[0063] 100. Fatigue testing apparatus for block dampers;

[0064] 10. First clamp; 20. Second clamp; 30. Lateral force loading monitoring system;

[0065] 11. First side plate; 12. External connector; 13. Internal connector; 14. Second side plate; 131. Groove;

[0066] 21. First bolt; 22. First nut; 23. Tie rod; 24. Clamping block; 25. Clamping body; 251. Mounting hole; 26. Guide rod; 27. Second nut; 28. Wire hole;

[0067] 31. First tension block; 32. Support shaft; 33. Sensor; 34. Force transmission rod; 35. Second tension block; 36. Loading screw; 37. Locking screw;

[0068] 41. Spherical plain bearing; 42. Pin; 43. Locking nut; 44. Cotter pin; 45. Guide sleeve; 46. Base; 47. Clamping plate; 48. Vertical plate; 415. First fixing screw; 416. Second fixing screw; 417. First elongated hole; 418. Second elongated hole; Detailed Implementation

[0069] Exemplary embodiments of the present disclosure will now be described in more detail 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 implemented 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.

[0070] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0071] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0072] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0073] like Figures 1 to 17 As shown, the present invention proposes a fatigue testing device 100 for a block damper, comprising:

[0074] The first clamp 10 has two clamping positions for placing the block damper, and the first clamp 10 is used to clamp the block damper in a first direction.

[0075] The second clamp 20 is used to clamp the block damper located in the clamping position in the second direction, which is perpendicular to the first direction.

[0076] The lateral force loading monitoring system 30 is used to connect two block dampers respectively set in two clamping positions, and the lateral force loading monitoring system 30 is used to apply a lateral force to the block dampers, the lateral force being parallel to the second direction.

[0077] It can be understood that the first direction can be understood as the axial direction of the block damper, and the second direction can be understood as the radial direction of the block damper. The block damper consists of a first side plate 11, a second side plate 14, an outer connector 12, and an inner connector 13. The outer connector 12 is rigidly connected to the two side plates. The gap between the inner connector 13 and the outer connector 12 and the side plates is filled with elastic rubber. When subjected to force, the inner connector 13 can move relative to the outer connector 12 and the side plates, playing a buffering role. The axial ends of the inner connector 13 are provided with grooves 131, which are used to connect to the external structure. The first clamp 10 and the second clamp 20 can be realized by the clamping plate 47 mechanism. The distance between the two clamping plates 47 of the clamping plate 47 mechanism is adjustable to tighten the block damper. The clamping directions of the first clamp 10 and the second clamp 20 are set perpendicularly, so that the first clamp 10 and the second clamp 20 can clamp the block damper from different directions to improve the stability of the block damper during testing. Specifically, the clamping direction of the first clamp 10 can be set to the axial direction of the block damper. Figure 2 The clamping direction of the second clamp 20 can be set to the radial direction of the block damper (in the direction of D). Figure 2 (Central D direction). The lateral force loading monitoring system 30 can be embedded between two block dampers. The lateral force loading monitoring system 30 has a sensor 33, which can be an existing pressure-measuring sensor. When the lateral force loading monitoring system 30 applies a lateral force to the block damper, the rubber injected inside the block damper will generate a force opposite to the lateral force. At this time, the sensor 33 will generate a pressure signal, that is, a lateral force measurement signal, to realize fatigue testing of the block damper.

[0078] The block damper fatigue testing device 100 proposed in this invention includes a first clamp 10, a lateral force loading monitoring system 30, and a second clamp 20. Two block dampers can be tested simultaneously at a time. The block dampers are clamped between the first clamp 10 and the second clamp 20. The lateral force loading monitoring system 30 is built into the two block dampers. During the test, the change in lateral force depends on the properties of the rubber cast inside the block damper, which better reflects the actual working state of the block damper. The magnitude of the lateral force is measured by a sensor 33 placed between the two block dampers and displayed on a digital display. This invention provides a block damper testing device that allows for the simultaneous testing of two block dampers with mutually canceling lateral forces, saving testing time, improving testing efficiency, eliminating damage to the testing device from lateral forces, and extending the service life of the testing device.

[0079] In some embodiments of the present invention, the first clamp 10 includes;

[0080] The clamping body 25 has a mounting hole 251, which extends through the clamping body 25 along a third direction. The third direction is perpendicular to the first direction and the second direction, respectively. The two clamping positions are located at the two ends of the mounting hole 251.

[0081] Two clamping blocks are respectively disposed at both ends of the mounting hole 251 along a third direction. The clamping blocks are used to clamp the block damper in the first direction.

[0082] It is understandable that the third direction can be understood as the radial direction perpendicular to the second direction of the block damper. The clamp body 25 can be a one-piece structure, or it can be an I-shaped structure with a mounting hole 251 through the middle. The cross-section of the clamp body 25 along the second direction is I-shaped. The four protruding parts of the clamp body 25 can serve as bosses for mounting the clamping block assembly. The diameter of the mounting hole 251 is larger than that of the lateral force loading monitoring system 30 and the portion of the block damper that needs to extend into the mounting hole 251 to facilitate installation. The clamp body 25 can also be a block structure, also with a mounting hole 251 through it, which can also achieve the effect of mounting the clamping block assembly and the lateral force loading monitoring system 30. A locking block assembly is provided at each end of the mounting hole 251. The locking block assembly consists of a locking block and a corresponding adjusting mechanism. The adjusting mechanism may include a first bolt 21 and a first nut 22. The first bolt 21 passes through a bolt hole in the clamping body 25, and the first nut 22 tightens the block damper, thus securing it. The locking block is connected to the clamping body 25 via the adjusting mechanism, which can adjust the clamping degree of the locking block on the block damper. By setting two locking block assemblies to clamp one block damper respectively, the stability of the block damper during testing is improved, and two block dampers can be tested simultaneously with one test device, thus improving testing efficiency.

[0083] In some embodiments of the present invention, the second clamp 20 includes;

[0084] Base 46;

[0085] Two clamping plate assemblies 47 are mounted on the base 46. The positions of the two clamping plate assemblies 47 correspond to the two clamping positions, and the clamping plate assemblies 47 are used to clamp the block damper in the second direction.

[0086] Understandably, the base 46 can refer to the existing base 46 structure, and the two clamping plate 47 assemblies are respectively set at the installation positions. The clamping plate 47 assembly can be a clamping plate 47 and a corresponding fixing structure. The clamping plate 47 is installed on the base 46 by the fixing structure. The clamping plate 47 can be set as a clamping structure. The clamping degree of the clamping plate 47 on the block damper can be adjusted by bolts. Bolt holes can also be provided on the clamping plate 47. Bolts are passed through the bolt holes and screwed to the block damper to fix the block damper.

[0087] In some embodiments of the present invention, the lateral force loading monitoring system 30 includes:

[0088] The first fastener 31 is used to connect to a block damper;

[0089] The second fastener 35 is used to connect to another block damper;

[0090] The shaft assembly has two ends connected to the first tension block 31 and the second tension block 35, respectively.

[0091] Sensor 33, connected to the shaft assembly, is used to sense the force exerted on the shaft assembly in a third direction.

[0092] A loading component is used to apply a force along a third direction to the shaft assembly to drive the second tension block 35 closer to the first tension block 31.

[0093] Understandably, the shape of the first tension block 31 can be adapted to the inner joint 13 of the block damper, for example, it can be set into a cylindrical shape. A first connecting sleeve can be installed at the end of the first tension block 31 away from the block damper, and a lateral force loading monitoring system 30 can be installed inside the first connecting sleeve. Similarly, the shape of the second tension block 35 can also be adapted to the inner joint 13 of the block damper, for example, it can be set into a cylindrical shape. A second connecting sleeve can be installed at the end of the second tension block 35 away from the block damper, and a lateral force loading monitoring system 30 can be installed inside the second connecting sleeve. It can also be connected and fixed to the first connecting sleeve. The shaft assembly can be equipped with multiple coaxially connected rods according to actual installation needs. The sensor 33 can be an existing pressure sensor 33 to sense lateral forces. The sensor 33 can be coaxially connected to the shaft assembly by screwing and is located in the middle section of the shaft assembly. The loading component can be a rod-shaped structure and can move along a third direction and lock at any position. By moving the loading component, the second tension block 35 can be driven closer to the first tension block 31 to apply a lateral force to the block damper.

[0094] In some embodiments of the present invention, the card block assembly includes:

[0095] Two locking blocks 24 are respectively disposed on both sides of the mounting hole 251 along the first direction;

[0096] Two first adjusting members are respectively connected to two locking blocks 24. The locking blocks 24 are connected to the clamping body 25 through the first adjusting members. The first adjusting members are used to adjust the position of the locking blocks 24 relative to the clamping body 25 along the first direction.

[0097] It is understood that the clamping block 24 can be a block-shaped structure with a clamping surface that is adapted to the outer surface of the block damper, for example, by adjusting the inclination according to the degree of inclination of the block damper. The clamping block 24 is fixed to the clamping body 25 by a first adjusting member, such as a first bolt 21 and a first nut 22. The clamping block 24 can be disposed on a protrusion of the clamping body 25. The protrusion is provided with bolt holes, through which the first bolt 21 passes and the first nut 22 is tightened, allowing the clamping block 24 to move in a first direction, thereby adjusting the degree of clamping of the block damper.

[0098] In some embodiments of the present invention, the clamp 47 assembly includes:

[0099] Two upright plates 48 are set on the base 46, and the two upright plates 48 are spaced apart along the second direction;

[0100] Two splints, 47;

[0101] Two second adjusting members are provided. The two clamping plates 47 are respectively connected to the two upright plates 48 through a second adjusting member. The second adjusting member is used to adjust the relative position of the clamping plate 47 and the upright plate 48 along the second direction.

[0102] Understandably, the upright plate 48 can be a plate-shaped structure, and it is fixed to the base 46 by welding or bolting. For example, the upright plate 48 can be fixed by a second fixing screw 416 passing through a second elongated hole 418 on the base 46 and then screwed to the upright plate 48. The second elongated hole 418 facilitates the adjustment of the position of the upright plate 48. The clamping plate 47 is connected to the upright plate 48 by bolts. Bolts can be provided on the clamping plate 47 for connecting the upright plate 48. That is, tightening the bolts will connect the clamping plate 47 and the upright plate 48. Multiple bolts can be provided on the upright plate 48, such as four bolts arranged in a rectangular array, to improve the stability of the connection. The connecting bolts between the upright plate 48 and the clamping plate 47 can also be arranged in a rectangular array of four bolts to improve the reliability of the connection. Multiple first fixing screws 415 can also be provided on the clamping plate 47, such as four first fixing screws 415 arranged in a rectangular array, for clamping the block damper. The first fixing screw 415 can be inserted into the first elongated hole 417 on the clamping plate 47 to achieve fine adjustment of the first fixing screw 415.

[0103] In some embodiments of the present invention, the first clamp 10 further includes a guide rod 26, one end of which is connected to the clamp body 25, and the other end of which extends away from the clamp body 25 along a first direction. The second clamp 20 further includes a guide sleeve 45, which is connected to the base 46. The guide sleeve 45 extends along the first direction, and at least a portion of the guide sleeve 45 and the upright plate 48 are located on the same side of the base 46 along a second direction. The guide rod 26 is inserted into the guide sleeve 45 in a pluggable manner.

[0104] In some embodiments of the present invention, the first clamp 10 further includes a pull rod 23, which is coaxially arranged with the guide rod 26 and respectively located at both ends of the clamp body 25 along the first direction. The pull rod 23 is tightened and fixed by a second nut 27.

[0105] Understandably, the first clamp 10 and the second clamp 20 are connected by a guide rod 26 inserted into the guide sleeve 45, ensuring that the axis of the guide rod 26 coincides with the axis of the clamp, preventing lateral forces, improving the accuracy of test force measurement, and protecting the test device and clamps. The guide rod 26 can be a round rod structure, and the guide sleeve 45 can be a cylindrical structure. The guide rod 26 can be connected to the clamp body 25 by welding or insertion, and is tightened by screwing the second nut 27. The guide sleeve 45 can be connected to the base 46 by welding or insertion. The guide rod 26 and the guide sleeve 45 are coaxially arranged and located at the central axis of the entire test device. In use, after clamping the block damper on the first clamp 10, the guide rod 26 can be inserted into the guide sleeve 45, and then the second clamp 20 can be used to further clamp the block damper.

[0106] In some embodiments of the present invention, the second tension block 35 is provided with a connecting screw hole extending in a third direction, the connecting screw hole penetrating the second tension block 35, and the shaft assembly includes:

[0107] The support rod is connected at both ends to the first tension block 31 and the sensor 33, respectively.

[0108] The force transmission rod 34 is coaxially arranged with the support rod, and one end of the force transmission rod 34 is connected to the sensor 33.

[0109] The loaded components include:

[0110] The loading screw 36 is screwed into the connecting screw hole, and one end of the loading bolt is connected to the other end of the force transmission rod 34.

[0111] The locking screw 37 is screwed into the connecting screw hole and connected to the other end of the loading screw 36.

[0112] Understandably, the support rod and force transmission rod 34 are rod-shaped structures. Before the test, the first tension block is fixed to the inner joint 13 of the block damper with screws, and the second tension block is fastened to the inner joint 13 of another block damper. The two ends of the sensor 33 are fastened to the support shaft 32 and the force transmission shaft with threads, respectively. Then, the support shaft 32 is inserted into the first tension block and fastened with screws. Then, the block damper is clamped on the left side of the first clamp 10, and the second tension block fastened to the other block damper is fitted onto the force transmission rod 34. Then, the other block damper is clamped on the right side of the first clamp 10, completing the installation between the two block dampers and the first clamp 10.

[0113] In some embodiments of the present invention, the clamping body 25 is provided with a wire hole 28, which communicates with the mounting hole 251, and the position of the wire hole 28 corresponds to that of the sensor 33. The support rod is used to rotatably connect to the first tension block 31. The position of the support shaft 32 should be adjusted so that the wire of the sensor 33 can pass through the wire hole 28 of the clamping body 25, so as to avoid interference between the wire of the sensor 33 and the clamping body 25 during the test.

[0114] In some embodiments of the present invention, the base 46 is provided with an insertion hole, the guide sleeve 45 is inserted into the insertion hole, both ends of the guide sleeve 45 extend away from the base 46 along the second direction, and the end of the guide sleeve 45 away from the clamping plate 47 assembly is provided with a connection hole. The second clamp 20 further includes:

[0115] Pin 42, passing through the connecting hole;

[0116] A spherical plain bearing 41, the inner ring of which is fitted onto a pin 42;

[0117] Cotter pin 44 is fitted onto the outer ring of spherical bearing 41;

[0118] A locking nut 43 is fitted onto a guide sleeve 45. The guide sleeve 45 has external threads, and the locking nut 43 is screwed into the external threads. The locking nut 43 can move axially along the guide sleeve 45 to abut against the base 46.

[0119] Understandably, the lower part of the second clamp 20 uses a joint mechanism, which allows for a more reasonable force distribution on the second clamp 20 during testing by adjusting the angle between the cotter pin 44 and the second clamp 20.

[0120] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A bulk damper fatigue test apparatus characterized by, include: The first clamp has two clamping positions for placing the block damper, and the first clamp is used to clamp the block damper in a first direction; A second clamp is used to clamp the block damper located at the clamping position in a second direction, the second direction being perpendicular to the first direction; A lateral force loading monitoring system is used to connect two block dampers respectively disposed in the two clamping positions, and the lateral force loading monitoring system is used to apply a lateral force to the block dampers along the second direction; The first fixture includes: The clamping body has a mounting hole that extends through the clamping body along a third direction, which is perpendicular to the first direction and the second direction, respectively. The two clamping positions are located at the two axial ends of the mounting hole. Two clamping block assemblies are respectively disposed at both ends of the mounting hole, and the clamping block assemblies are used to clamp the block damper in the first direction; The lateral force loading monitoring system includes: The first fastener is used to connect to one of the said block dampers; The second fastener is used to connect to another of the said block dampers; A shaft assembly, the two ends of which are respectively connected to the first tensioning block and the second tensioning block; A sensor, connected to the shaft assembly, is used to detect the force exerted on the shaft assembly along the third direction; A loading component is used to apply a force along the third direction to the shaft assembly to drive the second tension block closer to the first tension block.

2. The bulk damper fatigue test apparatus of claim 1, wherein The card block assembly includes: Two locking blocks are respectively disposed on both sides of the mounting hole along the first direction; Two first adjusting members are respectively connected to the two card blocks. The card blocks are connected to the clamping body through the first adjusting members. The first adjusting members are used to adjust the position of the card blocks relative to the clamping body along the first direction.

3. The bulk dam fatigue test apparatus of claim 1, wherein The second clamp includes: Base; Two clamping plate assemblies are disposed on the base, and the positions of the two clamping plate assemblies correspond to the two clamping positions respectively. The clamping plate assemblies are used to clamp the block damper in the second direction.

4. The bulk damper fatigue test apparatus of claim 3, wherein The clamping plate assembly includes: Two upright plates are disposed on the base, and the two upright plates are spaced apart along the second direction; Two splints; Two second adjusting members are provided, and the two clamping plates are respectively connected to the two upright plates through one of the second adjusting members. The second adjusting members are used to adjust the relative position of the clamping plates and the upright plates along the second direction.

5. The bulk damper fatigue test apparatus of claim 4, wherein The first clamp further includes a guide rod, one end of which is connected to the clamp body, and the other end of which extends away from the clamp body along the first direction. The second clamp further includes a guide sleeve, which is connected to the base and extends along the first direction. At least a portion of the guide sleeve and the upright plate are located on the same side of the base along the second direction. The guide rod is inserted into the guide sleeve in a pluggable manner.

6. The bulk damper fatigue test apparatus of claim 5, wherein, The base is provided with a insertion hole, the guide sleeve is inserted into the insertion hole, both ends of the guide sleeve extend away from the base along the second direction, and the end of the guide sleeve away from the clamping plate assembly is provided with a connection hole. The second clamp also includes: A pin is inserted through the connecting hole; A spherical plain bearing, wherein the inner ring of the spherical plain bearing is fitted onto the pin; A cotter pin is fitted onto the outer ring of the spherical bearing; A locking nut is fitted onto the guide sleeve, the guide sleeve has an external thread, the locking nut is screwed onto the external thread, and the locking nut can move axially along the guide sleeve to abut against the base.

7. The bulk dam fatigue test apparatus of claim 1, wherein The second tension block is provided with a connecting screw hole extending along the third direction, the connecting screw hole penetrating the second tension block, and the shaft assembly includes: The support rod is connected at both ends to the first tensioning block and the sensor, respectively. A force transmission rod is coaxially arranged with the support rod, and one end of the force transmission rod is connected to the sensor; The loading component includes: A loading screw is screwed into the connecting screw hole, and one end of the loading screw is connected to the other end of the force transmission rod; A locking screw is screwed into the connecting screw hole and connected to the other end of the loading screw.

8. The bulk dam fatigue test apparatus of claim 7, wherein, The clamp is provided with a wire hole, which communicates with the mounting hole and is positioned corresponding to the sensor. The support rod is used to rotatably connect to the first tensioning block.

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