Rotary supporting device and testing system

Abstract

The utility model discloses a rotary supporting device and a testing system, and the device comprises a connecting assembly, a supporting assembly, a rotary connecting part, and a first elastic sealing part. The connecting assembly is used for connecting a first rotating shaft of an engine and a second rotating shaft of test equipment. The supporting assembly is arranged outside the connecting assembly in a sleeving mode around the reference axis and used for being fixedly connected to a shell of the engine. The connecting assembly and the supporting assembly are rotationally connected around a reference axis through a rotary connecting piece. The radial load and the axial load of the connecting assembly are transmitted to the supporting assembly through the rotating connecting piece and then transmitted to a shell of the engine. The connecting assembly is limited in the extending direction of the reference axis, so that the first rotating shaft is limited in the extending direction of the reference axis, and axial movement of the first rotating shaft is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of test devices, and in particular to a rotating support device and a test system. Background Art

[0002] In the diesel engine test bench, the output shaft of the diesel engine is connected to the output shaft of the power consumption device through a coupling. The output end of the diesel engine is not axially positioned, which causes the output end of the diesel engine to move axially during the test, causing the output shaft of the coupling and the power consumption device to be subjected to a large axial force. In severe cases, the coupling and the output shaft of the power consumption device will undergo plastic deformation, making it impossible to continue the test. Utility Model Content

[0003] Embodiments of the present application provide a rotation support device and a test system, which can reduce the axial movement of a first rotating shaft of an engine when the engine is tested.

[0004] In order to solve the above technical problems, the embodiments of the present application disclose the following technical solutions: In order to solve the above technical problems, the embodiments of the present application disclose the following technical solutions:

[0005] On the one hand, a rotary support device is provided, the rotary support device has a reference axis, and the rotary support device includes a connecting assembly, a supporting assembly, a rotating connecting member, and a first elastic sealing member. The connecting assembly is used to connect the first rotating shaft of the engine and the second rotating shaft of the test equipment respectively. The supporting assembly surrounds the reference axis and is sleeved outside the connecting assembly, and a gap is formed between the supporting assembly and the connecting assembly and is arranged around the periphery of the reference axis. The supporting assembly is used to be fixedly connected to the housing of the engine. The rotating connecting member is arranged around the periphery of the reference axis and accommodated in the gap. The connecting assembly and the supporting assembly are rotatably connected through the rotating connecting member, so that the connecting assembly and the supporting assembly can rotate relative to each other around the reference axis. The first elastic sealing member is arranged around the periphery of the reference axis and accommodated in the gap. In the extension direction of the reference axis, the first elastic sealing member is located on one side of the rotating connecting member, and the first elastic sealing member is clamped between the connecting assembly and the supporting assembly, and the first elastic sealing member seals the gap.

[0006] In addition to or as an alternative to one or more of the features disclosed above, a second elastic seal is further included, which is arranged around the periphery of the reference axis and accommodated in the gap. In the extension direction of the reference axis, the first elastic seal is located on the other side of the rotating connection member. The second elastic seal is sandwiched between the connecting assembly and the supporting assembly, and the second elastic seal seals the gap.

[0007] In addition to one or more of the features disclosed above, or as an alternative, the first elastic seal includes a first sealing portion and a second sealing portion. The first sealing portion is arranged around the periphery of the reference axis and is fixedly connected to one of the connecting assembly and the supporting assembly; the second sealing portion is arranged around the periphery of the reference axis, connected to the first sealing portion, and located radially inside or outside the first sealing portion, the second sealing portion is elastic, and the second sealing portion extends in a direction inclined relative to the reference axis in a natural state without external force, and the extended end of the second sealing portion elastically presses against the other of the connecting assembly and the supporting assembly along the radial direction of the second sealing portion.

[0008] In addition to or as an alternative to one or more of the features disclosed above, in the extension direction of the reference axis, the extension end of the second sealing portion is closer to one side of the rotating connection member than the extension start end.

[0009] In addition to one or more of the features disclosed above, or as an alternative, the support assembly has a groove extending around a reference axis, the groove is located on the inner circumferential surface of the support assembly forming a gap, and in the extension direction of the reference axis, the groove is located between the first elastic seal and the second elastic seal. The support assembly also has a first through hole, which connects the groove with the outside world; the rotating support device also includes a cover body, which is detachably disposed on the support assembly and covers the first through hole.

[0010] In addition to or as an alternative to one or more of the features disclosed above, a groove is provided around the reference axis.

[0011] In addition to one or more of the features disclosed above, or as an alternative, the rotating connection member includes a first bearing, a limit member and a second bearing, in the extension direction of the reference axis, the limit member is clamped between the outer ring of the first bearing and the outer ring of the second bearing, the outer ring of the first bearing and the outer ring of the second bearing are respectively fixedly connected to the support assembly, and the inner ring of the first bearing and the inner ring of the second bearing are respectively fixedly connected to the connecting assembly; wherein the limit member has a second through hole extending radially through the limit member, and at least a portion of the second through hole is arranged opposite to the groove.

[0012] In addition to or as an alternative to one or more of the features disclosed above, the connection assembly includes a first connection member, a second connection member, and a third sealing member. The first connection member is used to connect the first rotating shaft; the second connection member is detachably connected to the first connection member and clamps the rotating connection member in the extension direction of the reference axis, and the second connection member is used to connect the second rotating shaft; the third sealing member is arranged around the periphery of the reference axis and seals the connection between the first connection member and the second connection member; wherein the first elastic sealing member is clamped between the first connection member and the support assembly, and the second elastic sealing member is clamped between the second connection member and the support assembly.

[0013] In addition to one or more of the features disclosed above, or as an alternative, the second connecting member includes a first part, a second part and a third part which are connected in sequence in the extension direction of the reference axis, the outer diameter of the second part is larger than the outer diameter of the first part, so that a first abutment surface is formed at the connection between the first part and the second part and is annularly arranged on the reference axis, the first abutment surface abuts against one side of the rotating connecting member in the extension direction of the reference axis, and the third part is used to connect the second rotating shaft; the first connecting member is provided with a receiving groove on the end face of one end in the extension direction of the reference axis, the first connecting member is sleeved on the end of the first part away from the second part through the receiving groove, and the end face of the first connecting member with the receiving groove abuts against the other side of the rotating connecting member in the extension direction of the reference axis; wherein the third sealing member is elastic and is clamped between the outer peripheral surface of the first part and the circumferential side wall of the receiving groove.

[0014] In addition to or as an alternative to one or more of the features disclosed above, the support assembly includes a support shell, an end cover, and a fourth seal. The support shell is used to connect the housing; the end cover is detachably connected to the support shell and clamps the rotating connection member in the extension direction of the reference axis; the fourth seal is arranged around the periphery of the reference axis and seals the connection between the end cover and the support shell; wherein the first elastic seal is clamped between the end cover and the connection assembly, and the second elastic seal is clamped between the support shell and the connection assembly.

[0015] In addition to one or more of the features disclosed above, or as an alternative, the support shell includes a first accommodating chamber and a second accommodating chamber connected in sequence in the extension direction of the reference axis, the inner diameter of the first accommodating chamber is larger than the inner diameter of the second accommodating chamber, so that a second abutting surface arranged in a ring around the reference axis is formed at the connection between the first accommodating chamber and the second accommodating chamber, and the second abutting surface abuts against one side of the rotating connection member in the extension direction of the reference axis; the end cover includes a main body and a protrusion, the main body is detachably connected to the support shell, the protrusion is protruding from one side of the main body in the extension direction of the reference axis and is arranged outside the reference axis, the protrusion is accommodated in the first accommodating chamber and abuts against the other side of the rotating connection member in the extension direction of the reference axis; wherein the fourth sealing member is elastic and is clamped between the outer peripheral surface of the protrusion and the side wall surface of the first accommodating chamber arranged in a ring around the reference axis.

[0016] In addition to or as an alternative to one or more of the features disclosed above, the support shell includes a main body, a first connecting part, a plurality of baffles, a second connecting part and a mounting part. The main body has a first accommodating cavity and a second accommodating cavity. The first connecting part is sleeved outside the main body and has a plurality of notches arranged at intervals around a reference axis. The baffles correspond to the notches one by one, and each baffle is detachably connected to the first connecting part and is located in the corresponding notch. The second connecting part is connected between the main body and the first connecting part. The mounting part is connected to the first connecting part and is located radially outside the first connecting part, and the mounting part is used to be fixedly connected to the casing of the engine.

[0017] On the other hand, the present application also provides a test system for testing an engine, the test system comprising a test device, a coupling and a rotation support device. The test device has a second rotating shaft; the rotation support device is any of the above-mentioned rotation support devices, and the connecting assembly is connected to the second rotating shaft through a coupling.

[0018] One of the above technical solutions has the following advantages or beneficial effects:

[0019] The support assembly is fixedly connected to the housing of the engine, and the connecting assembly is rotationally connected to the support assembly through a rotating connector. The connecting assembly is respectively connected to the first rotating shaft of the engine and the second rotating shaft of the test equipment. The rotating connector transfers the radial load and axial load of the connecting assembly to the support assembly, and then to the housing of the engine. The connecting assembly is limited in the extension direction of the reference axis, so that the first rotating shaft is limited in the extension direction of the reference axis, reducing the axial movement of the first rotating shaft. In addition, the first elastic seal is clamped between the connecting assembly and the support assembly, and seals the gap between the support assembly and the connecting assembly, so that the rotating connector is in a relatively closed environment, which is conducive to lubricating the rotating connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0021] Figure 1 is a front view of an embodiment of the test system of the present application;

[0022] Figure 2 yes Figure 1 A three-dimensional exploded view of the test system shown;

[0023] Figure 3 is a three-dimensional exploded view of an embodiment of the rotary support device of the present application;

[0024] Figure 4 is a front view of an embodiment of the rotary support device of the present application;

[0025] Figure 5 yes Figure 4 Left view of

[0026] Figure 6 yes Figure 5 Middle AA section view;

[0027] Figure 7 yes Figure 6 An enlarged view of the partial view C in FIG.

[0028] Figure 8 yes Figure 4 A three-dimensional cutaway view of a first elastic seal in the rotary support device;

[0029] Fig. 9 yes Figure 8 An enlarged view of the partial view F in FIG.

[0030] Fig.10 yes Figure 4 A three-dimensional cutaway view of a rotating connection member in the rotating support device shown;

[0031] Fig.11 yes Figure 4 Middle BB section view;

[0032] Fig.12 yes Figure 4 A three-dimensional cutaway view of a connecting component in the rotating support device shown;

[0033] Fig.13 yes Fig.12 An enlarged view of the partial view D in FIG.

[0034] Fig.14 yes Figure 4 A three-dimensional cutaway view of a support assembly in the rotary support device shown;

[0035] Fig.15 yes Fig.14 An enlarged view of detail view E in FIG.

[0036] Description of reference numerals: 100-rotation support device; 110-connection assembly; 111-first connection member; 112-second connection member; 1121-first portion; 1122-second portion; 1123-third portion; 1124-first abutting surface; 113-third sealing member; 114-accommodating groove; 120-support assembly; 121-support housing; 1211-main body; 1212-first connection portion; 1213-second connection portion; 1214-installation portion; 1215-notch; 1216-baffle; 1217-first accommodating chamber; 1218-second accommodating chamber; 12 19-second abutment surface; 122-end cover; 1221-main body; 1222-protrusion; 123-fourth sealing member; 124-groove; 125-first through hole; 130-rotating connection member; 131-first bearing; 132-second bearing; 133-limiting member; 134-second through hole; 140-first elastic sealing member; 150-second elastic sealing member; 141-first sealing part; 142-second sealing part; 200-engine; 210-housing; 220-first rotating shaft; 300-test equipment; 310-second rotating shaft; 400-coupling; L-reference axis. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and beneficial effects of this application more clear, the following further describes this application in detail in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining this application, not for limiting this application.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] See also Figure 1 and Figure 2 . Figure 1 It is a front view of an embodiment of the test system of the present application. Figure 2 yes Figure 1 3D exploded view of the test system shown.

[0042] The test system is used to test an engine 200. The engine 200 is, for example, a diesel engine. The engine 200 includes a housing 210 and a first rotating shaft 220. The first rotating shaft 220 can rotate around a reference axis L relative to the housing 210.

[0043] The test system can perform comprehensive functional tests on the engine 200. The test system can test the torque, speed, power, fuel consumption, etc. of the engine 200 under various working conditions, and complete functional tests related to the engine 200. For example, the test system can be used to perform engine load characteristic tests, engine durability tests, or engine universal characteristic tests.

[0044] The test system includes a test device 300, a coupling 400 and a rotation support device 100. The test device 300 has a second rotating shaft 310. The second rotating shaft 310 is coaxially arranged with the first rotating shaft 220.

[0045] See also Figures 3 to 7 . Figure 3 It is a three-dimensional exploded view of an embodiment of a rotating support device 100 of the present application. Figure 4 It is a front view of an embodiment of a rotating support device 100 of the present application. Figure 5 yes Figure 4 Left view of . Figure 6 yes Figure 5 Middle AA section view, Figure 7 yes Figure 6 An enlarged view of detail view C in FIG.

[0046] The rotary support device 100 includes a connecting assembly 110 , a supporting assembly 120 , a rotating connecting member 130 , a first elastic sealing member 140 and a second elastic sealing member 150 .

[0047] The connecting assembly 110 is used to connect the first rotating shaft 220 of the engine 200 and the second rotating shaft 310 of the test equipment 300, respectively. Specifically, the connecting assembly 110 is coaxially arranged with the first rotating shaft 220 and the second rotating shaft 310, respectively. One end of the connecting assembly 110 in the extending direction of the reference axis L is detachably connected to the first rotating shaft 220, and the other end is detachably connected to the second rotating shaft 310 through a coupling 400. The connecting assembly 110 is detachably connected to the first rotating shaft 220 and the second rotating shaft 310, respectively, for example, by bolts. In some other embodiments, the test system may also not include the coupling 400, and the connecting assembly 110 is directly connected to the second rotating shaft 310.

[0048] The support assembly 120 is sleeved outside the connection assembly 110 around the reference axis L, and a gap around the reference axis L is formed between the support assembly 120 and the connection assembly 110. The support assembly 120 is used to be fixedly connected to the housing 210 of the engine 200. Specifically, the support assembly 120 is detachably connected to the housing 210, for example, by bolts.

[0049] The rotating connection member 130 is disposed around the outer periphery of the reference axis L and is accommodated in the gap. The connecting assembly 110 and the supporting assembly 120 are rotatably connected around the reference axis L through the rotating connection member 130 .

[0050] The rotating connector 130 transmits the radial load and the axial load of the connecting assembly 110 to the supporting assembly 120, and then to the housing 210 of the engine 200. The connecting assembly 110 is limited in the extension direction of the reference axis L, so that the first rotating shaft 220 is limited in the extension direction of the reference axis L, reducing the axial movement of the first rotating shaft 220.

[0051] During the rotation of the first rotating shaft 220 , the second rotating shaft 310 is driven to rotate through the connecting assembly 110 and the coupling 400 in sequence, and the first rotating shaft 220 , the connecting assembly 110 , the coupling 400 and the second rotating shaft 310 cannot move in the extension direction of the reference axis L.

[0052] The first elastic seal 140 is disposed around the periphery of the reference axis L and is accommodated in the gap. In the extension direction of the reference axis L, the first elastic seal 140 is located on one side of the rotating connector 130. The first elastic seal 140 is sandwiched between the connecting assembly 110 and the supporting assembly 120, and seals the gap between the connecting assembly 110 and the supporting assembly 120. Specifically, the first elastic seal 140 is fixedly connected to one of the connecting assembly 110 and the supporting assembly 120, and elastically presses against the other of the connecting assembly 110 and the supporting assembly 120.

[0053] The second elastic seal 150 is arranged around the periphery of the reference axis L and is accommodated in the gap. In the extension direction of the reference axis L, the first elastic seal 140 is located on the other side of the rotating connector 130. The second elastic seal 150 is sandwiched between the connecting assembly 110 and the supporting assembly 120, and seals the gap between the connecting assembly 110 and the supporting assembly 120. Specifically, the second elastic seal 150 is fixedly connected to one of the connecting assembly 110 and the supporting assembly 120, and elastically presses against the other of the connecting assembly 110 and the supporting assembly 120, and the second elastic seal 150 seals the gap.

[0054] The first elastic seal 140 and the second elastic seal 150 are respectively sealed at both sides of the rotating connector 130, so that the rotating connector 130 is in a closed cavity. Grease is filled in the closed cavity to increase the service life of the rotating connector 130.

[0055] See also Figures 7 to 9 . Figure 8 yes Figure 4 A three-dimensional cross-sectional view of the first elastic seal 140 in the rotation support device 100 is shown. Fig. 9 yes Figure 8 An enlarged view of the partial view F in FIG.

[0056] In some embodiments, the first elastic seal 140 includes a first sealing portion 141 and a second sealing portion 142. The first sealing portion 141 is arranged around the periphery of the reference axis L and is fixedly connected to one of the connection assembly 110 and the support assembly 120. The second sealing portion 142 is arranged around the periphery of the reference axis L, connected to the first sealing portion 141, and located radially inside or outside the first sealing portion 141. The second sealing portion 142 is elastic, and the second sealing portion 142 extends in a direction inclined relative to the reference axis L in a natural state without external force, and the extended end of the second sealing portion 142 elastically presses against the other of the connection assembly 110 and the support assembly 120 along the radial direction of the second sealing portion 142.

[0057] Specifically, Figure 4In the rotating support device 100 shown, the first sealing portion 141 is fixedly connected to the support assembly 120, and the second sealing portion 142 is located radially inside the first sealing portion 141. The second sealing portion 142 elastically presses against the connecting assembly 110 in its radial direction inward. In other embodiments, the first sealing portion 141 may be fixedly connected to the connecting assembly 110, and the second sealing portion 142 is located radially outside the first sealing portion 141. The second sealing portion 142 elastically presses against the supporting assembly 120 in its radial direction outward.

[0058] In some embodiments, the first sealing portion 141 can be made of a rigid material, such as stainless steel, and the first sealing portion 141 is fixedly connected to one of the connecting component 110 and the supporting component 120 by nesting. The second sealing portion 142 can be made of a rubber material. The second sealing portion 142 can be integrally formed with the first sealing portion 141.

[0059] In some other embodiments, the first sealing portion 141 and the second sealing portion 142 are both made of elastic material, and the first sealing portion 141 is fixedly connected to one of the connecting component 110 and the supporting component 120 by bonding.

[0060] Further, in the extension direction of the reference axis L, the extension end of the second sealing portion 142 is closer to the side of the rotating connector 130 relative to the extension start end.

[0061] Compared with the extension end being away from the side of the rotating connecting member 130 relative to the extension starting end, such a configuration can improve the sealing effect of the first elastic sealing member 140 .

[0062] The specific structure of the second elastic sealing member 150 may refer to the specific structure of the first elastic sealing member 140 , and will not be described in detail here.

[0063] See also Figure 7 and Fig.10 . Fig.10 yes Figure 4 A three-dimensional cutaway view of the rotary connection member 130 in the rotary support device 100 is shown.

[0064] In some embodiments, the rotating connection member 130 includes a first bearing 131, a stopper 133, and a second bearing 132. In the extension direction of the reference axis L, the stopper 133 is sandwiched between the outer ring of the first bearing 131 and the outer ring of the second bearing 132. The outer ring of the first bearing 131 and the outer ring of the second bearing 132 are respectively fixedly connected to the support assembly 120. The inner ring of the first bearing 131 and the inner ring of the second bearing 132 are respectively fixedly connected to the connection assembly 110.

[0065] The limiting member 133 is used to limit the positions of the outer rings of the first bearing 131 and the second bearing 132 in the extending direction of the reference axis L.

[0066] By adopting the method of disposing the first bearing 131 and the second bearing 132 at intervals, the connecting component 110 can be more stably rotatably connected to the supporting component 120 .

[0067] In other embodiments, the rotating connection member 130 includes only one bearing, the outer ring of which is fixedly connected to the support assembly 120 , and the inner ring of which is fixedly connected to the connection assembly 110 .

[0068] See also Figure 7 and Fig.11 . Fig.11 yes Figure 4 Middle BB section view.

[0069] When the rotating connecting member 130 includes the first bearing 131 , the limiting member 133 and the second bearing 132 , the following improvements are also made.

[0070] In some embodiments, the support assembly 120 has a groove 124 extending around the reference axis L, and the groove 124 is located on the inner circumferential surface of the support assembly 120 forming a gap. In the extension direction of the reference axis L, the groove 124 is located between the first elastic seal 140 and the second elastic seal 150. The support assembly 120 also has a first through hole 125, and the first through hole 125 connects the groove 124 with the outside. The rotating support device 100 also includes a cover body 160, which is detachably disposed on the support assembly 120 and covers the first through hole 125. Among them, the limiter 133 has a second through hole 134 that penetrates in the radial direction of the limiter 133, and at least a portion of the second through hole 134 is arranged opposite to the groove 124.

[0071] Specifically, in Figure 4 In the rotating support device 100 shown, the number of the first through holes 125 is three, and the three first through holes 125 are arranged at intervals around the reference axis L. The cover body corresponds to the first through holes 125 one by one. Each cover body 160 covers the corresponding first through hole 125. One first through hole 125 is a refueling hole, another first through hole 125 is an observation hole, and another first through hole 125 is an oil discharge hole. The cover body 160 corresponding to the refueling hole is provided with a small hole to balance the internal and external pressures caused by the temperature rise inside the oil seal.

[0072] The closed cavity for storing grease is connected to the outside through the second through hole 134, the groove 124 and the first through hole 125 in sequence.

[0073] In the case where the groove 124 is not provided, if the position of the stopper 133 is offset (rotated around the reference axis L), the first through hole 125 and the second through hole 134 may be misaligned, thereby causing the sealed cavity to be unable to communicate with the outside world. In the embodiment of the present application, the groove 124 is provided, and even if the stopper 133 is offset to a certain extent, the first through hole 125 and the second through hole 134 can still be connected through the groove 124.

[0074] In some embodiments, the groove 124 is arranged around the reference axis L, that is, the groove 124 extends a full circle around the reference axis L. Therefore, even if the stopper 133 deviates to a large extent, the first through hole 125 and the second through hole 134 can always remain connected.

[0075] See also Figure 7 , Fig.12 and Fig.13 . Fig.12 yes Figure 4 A three-dimensional cutaway view of the connection assembly 110 in the rotation support device 100 is shown. Fig.13 yes Fig.12 An enlarged view of detail view D in FIG.

[0076] In some embodiments, the connecting assembly 110 includes a first connecting member 111, a second connecting member 112, and a third sealing member 113. The first connecting member 111 is used to connect the first rotating shaft 220. The second connecting member 112 is detachably connected to the first connecting member 111, and clamps the rotating connecting member 130 in the extending direction of the reference axis L. The second connecting member 112 is used to connect the second rotating shaft 310. The third sealing member 113 is arranged around the periphery of the reference axis L, and seals the connection between the first connecting member 111 and the second connecting member 112. Among them, the first elastic sealing member 140 is fixedly connected to one of the first connecting member 111 and the supporting assembly 120, and elastically presses against the other of the first connecting member 111 and the supporting assembly 120, and the second elastic sealing member 150 is fixedly connected to one of the second connecting member 112 and the supporting assembly 120, and elastically presses against the other of the second connecting member 112 and the supporting assembly 120.

[0077] In some embodiments, the second connecting member 112 includes a first portion 1121, a second portion 1122, and a third portion 1123 connected in sequence in the extension direction of the reference axis L. The outer diameter of the second portion 1122 is greater than the outer diameter of the first portion 1121, so that the first portion 1121 and the second portion 1122 form a first abutting surface 1124 arranged around the reference axis L at the connection point. The first abutting surface 1124 abuts against one side of the rotating connecting member 130 in the extension direction of the reference axis L, and the third portion 1123 is used to connect the second rotating shaft 310. The first connecting member 111 is provided with a receiving groove 114 on the end surface of one end in the extension direction of the reference axis L. The first connecting member 111 is sleeved on the end of the first portion 1121 away from the second portion 1122 through the receiving groove 114. The end surface of the first connecting member 111 having the receiving groove 114 abuts against the other side of the rotating connecting member 130 in the extension direction of the reference axis L. The third sealing member 113 is elastic and is sandwiched between the outer peripheral surface of the first portion 1121 and the circumferential side wall of the receiving groove 114 .

[0078] Specifically, the first elastic seal 140 is fixedly connected to the support assembly 120 and elastically pressed against the first connecting member 111 , and the second elastic seal 150 is fixedly connected to the support assembly 120 and elastically pressed against the second portion 1122 of the second connecting member 112 .

[0079] Specifically, the end surface of the first connecting member 111 having the accommodating groove 114 abuts against the inner ring of the first bearing 131 , and the first abutting surface 1124 of the second connecting member 112 abuts against the inner ring of the second bearing 132 .

[0080] Specifically, the outer circumference of the first part 1121 is provided with a groove arranged around the reference axis L, and the third sealing member 113 is embedded in the groove. The third sealing member 113 is elastically deformed under the extrusion effect and seals the connection between the first connecting member 111 and the first part 1121. The third sealing member 113 can be made of rubber material.

[0081] By providing the third sealing member 113 , the sealing effect of the connection between the first connecting member 111 and the second connecting member 112 can be improved, thereby preventing the grease from leaking from the connection between the first connecting member 111 and the second connecting member 112 .

[0082] See also Figure 7 , Fig.14 and Fig.15 . Fig.14 yes Figure 4 A three-dimensional cutaway view of the support assembly 120 in the rotary support device 100 is shown. Fig.15 yes Fig.14 An enlarged view of detail view E in FIG.

[0083] In some embodiments, the support assembly 120 includes a support housing 121 , an end cover 122 , and a fourth sealing member 123 .

[0084] The support shell 121 is used to connect the housing 210. The end cover 122 is detachably connected to the support shell 121, and clamps the rotating connector 130 in the extension direction of the reference axis L. The fourth seal 123 is arranged around the outer periphery of the reference axis L, and seals the connection between the end cover 122 and the support shell 121. Among them, the first elastic seal 140 is fixedly connected to one of the end cover 122 and the connecting assembly 110, and elastically presses against the other of the end cover 122 and the connecting assembly 110, and the second elastic seal 150 is fixedly connected to one of the support shell 121 and the connecting assembly 110, and elastically presses against the other of the support shell 121 and the connecting assembly 110.

[0085] Specifically, the support shell 121 includes a first accommodating cavity 1217 and a second accommodating cavity 1218 which are sequentially connected in the extension direction of the reference axis L. The inner diameter of the first accommodating cavity 1217 is larger than the inner diameter of the second accommodating cavity 1218, so that the connection between the first accommodating cavity 1217 and the second accommodating cavity 1218 forms a second abutting surface 1219 which is arranged around the reference axis L. The second abutting surface 1219 abuts against one side of the rotating connecting member 130 in the extension direction of the reference axis L. The end cover 122 includes a body 1221 and a protruding portion 1222, and the body 1221 is detachably connected to the support shell 121. The protruding portion 1222 is protruding from one side of the body 1221 in the extension direction of the reference axis L, and is arranged around the reference axis L. The protruding portion 1222 is accommodated in the first accommodating cavity 1217, and abuts against the other side of the rotating connecting member 130 in the extension direction of the reference axis L. The fourth sealing member 123 is elastic and is sandwiched between the outer peripheral surface of the protruding portion 1222 and the side wall surface of the first accommodating cavity 1217 which is arranged around the reference axis L.

[0086] Specifically, the first elastic seal 140 is fixedly connected to the end cover 122 and elastically pressed against the connection assembly 110 , and the second elastic seal 150 is fixedly connected to the support shell 121 and elastically pressed against the connection assembly 110 .

[0087] Specifically, the protruding portion 1222 abuts against the outer ring of the first bearing 131 , and the second abutting surface 1219 abuts against the outer ring of the second bearing 132 .

[0088] Specifically, the outer peripheral surface of the protrusion 1222 is provided with a groove arranged around the reference axis L, and the fourth sealing member 123 is embedded in the groove. The fourth sealing member 123 elastically deforms under the extrusion and seals the connection between the end cover 122 and the support housing 121. The fourth sealing member 123 can be made of rubber material.

[0089] By providing the fourth sealing member 123 , the sealing effect of the connection between the end cover 122 and the support shell 121 can be improved, thereby preventing the grease from leaking from the connection between the end cover 122 and the support shell 121 .

[0090] In some embodiments, the support shell 121 includes a main body 1211, a first connection part 1212, a plurality of baffles 1216, a second connection part 1213 and a mounting part 1214. The main body 1211 has a first accommodating cavity 1217 and a second accommodating cavity 1218. The first connection part 1212 is sleeved outside the main body 1211 and has a plurality of notches 1215 arranged at intervals around the reference axis L. The baffles 1216 correspond to the notches 1215 one by one, and each baffle 1216 is detachably connected to the first connection part 1212 and is located in the corresponding notch 1215. The second connection part 1213 is connected between the main body 1211 and the first connection part 1212. The mounting part 1214 is connected to the first connection part 1212 and is located radially outside the first connection part 1212. The mounting part 1214 is used to be fixedly connected to the housing 210 of the engine 200.

[0091] Since the baffle 1216 is detachable, when connecting the connecting assembly 110 to the first rotating shaft 220 , the operation can be performed through the notch 1215 . After the connection is completed, the baffle 1216 is fixedly connected to the first connecting portion 1212 .

[0092] In summary, the rotary support device 100 and the test system provided in the embodiment of the present application can reduce the axial movement of the first rotating shaft 220 of the engine 200 when testing the engine 200.

[0093] The introduction provided in the above steps is only used to help understand the method, structure and core idea of ​​the present application. For ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A rotary support device, characterized in that: The rotating support device has a reference axis, and the rotating support device comprises: A connecting assembly, the connecting assembly being used to respectively connect a first rotating shaft of the engine and a second rotating shaft of the test equipment; A support assembly, the support assembly surrounds the reference axis and is sleeved outside the connection assembly, a gap formed between the support assembly and the connection assembly and arranged around the periphery of the reference axis, and the support assembly is used to be fixedly connected to a housing of the engine; A rotating connection member, the rotating connection member is arranged around the periphery of the reference axis and is accommodated in the gap, the connecting assembly and the supporting assembly are rotatably connected through the rotating connection member, so that the connecting assembly and the supporting assembly can rotate relative to each other around the reference axis; A first elastic seal, the first elastic seal is arranged on the outer periphery of the reference axis and is accommodated in the gap, in the extension direction of the reference axis, the first elastic seal is located on one side of the rotating connection component, the first elastic seal is clamped between the connection component and the support component, and the first elastic seal seals the gap.

2. The rotary support device according to claim 1, characterized in that: Also includes: A second elastic seal is arranged on the periphery of the reference axis and is accommodated in the gap. In the extension direction of the reference axis, the first elastic seal is located on the other side of the rotating connection component. The second elastic seal is clamped between the connection component and the support component. The second elastic seal seals the gap.

3. The rotary support device according to claim 1, characterized in that: The first elastic sealing member comprises: A first sealing portion, the first sealing portion is arranged around the outer periphery of the reference axis and is fixedly connected to one of the connecting assembly and the supporting assembly; A second sealing portion, the second sealing portion is annularly arranged on the outer circumference of the reference axis, connected to the first sealing portion, and located on the radial inner side or outer side of the first sealing portion, the second sealing portion is elastic, and the second sealing portion extends in a direction inclined relative to the reference axis in a natural state without external force, and the extended end of the second sealing portion is elastically pressed against the other of the connecting component and the supporting component along the radial direction of the second sealing portion.

4. The rotary support device according to claim 3, characterized in that: In the extension direction of the reference axis, the extension end of the second sealing portion is closer to one side of the rotating connecting member relative to the extension starting end.

5. The rotary support device according to claim 2, characterized in that: The support assembly has a groove extending around the reference axis, the groove is located on the inner circumferential surface of the support assembly forming the gap, and in the extension direction of the reference axis, the groove is located between the first elastic seal and the second elastic seal, and the support assembly also has a first through hole, and the first through hole connects the groove with the outside; The rotary support device further comprises a cover body, which is detachably disposed on the support assembly and covers the first through hole.

6. The rotary support device according to claim 5, characterized in that: The groove is arranged around the reference axis.

7. The rotary support device according to claim 5, characterized in that: The rotating connection member comprises a first bearing, a stopper and a second bearing. In the extension direction of the reference axis, the stopper is sandwiched between the outer ring of the first bearing and the outer ring of the second bearing. The outer ring of the first bearing and the outer ring of the second bearing are respectively fixedly connected to the support assembly, and the inner ring of the first bearing and the inner ring of the second bearing are respectively fixedly connected to the connection assembly. Wherein, the limiting member has a second through hole penetrating radially of the limiting member, and at least a portion of the second through hole is arranged opposite to the groove.

8. The rotary support device according to claim 2, characterized in that: The connection component comprises: a first connecting member, the first connecting member being used to connect the first rotating shaft; a second connecting member, the second connecting member being detachably connected to the first connecting member and clamping the rotating connecting member in the extending direction of the reference axis, the second connecting member being used to connect the second rotating shaft; a third sealing member, the third sealing member being arranged around the outer periphery of the reference axis and sealing a connection between the first connecting member and the second connecting member; Wherein, the first elastic seal is clamped between the first connecting member and the supporting assembly, and the second elastic seal is clamped between the second connecting member and the supporting assembly.

9. The rotary support device according to claim 8, characterized in that: The second connecting member includes a first part, a second part and a third part which are sequentially connected in the extending direction of the reference axis, the outer diameter of the second part is larger than the outer diameter of the first part, so that a first abutting surface arranged in an annular manner on the reference axis is formed at the connection between the first part and the second part, the first abutting surface abuts against one side of the rotating connecting member in the extending direction of the reference axis, and the third part is used to connect the second rotating shaft; The first connecting member is provided with a receiving groove on an end surface at one end in the extending direction of the reference axis, the first connecting member is sleeved on an end of the first part away from the second part through the receiving groove, and the end surface of the first connecting member having the receiving groove abuts against the other side of the rotating connecting member in the extending direction of the reference axis; The third sealing member is elastic and is sandwiched between the outer peripheral surface of the first portion and the circumferential side wall of the accommodating groove.

10. The rotary support device according to claim 2, characterized in that: The support assembly comprises: A supporting shell, the supporting shell is used to connect the outer shell; an end cover, the end cover being detachably connected to the support shell and clamping the rotating connecting member in the extending direction of the reference axis; a fourth sealing member, the fourth sealing member being disposed around the outer periphery of the reference axis and sealing a connection between the end cover and the support shell; Wherein, the first elastic seal is clamped between the end cover and the connecting assembly, and the second elastic seal is clamped between the supporting shell and the connecting assembly.

11. The rotary support device according to claim 10, characterized in that: The support shell includes a first accommodating cavity and a second accommodating cavity which are sequentially connected in the extension direction of the reference axis, the inner diameter of the first accommodating cavity is larger than the inner diameter of the second accommodating cavity, so that a second abutting surface annularly arranged on the reference axis is formed at the connection point between the first accommodating cavity and the second accommodating cavity, and the second abutting surface abuts against one side of the rotating connecting member in the extension direction of the reference axis; The end cover comprises a body and a protruding portion, the body is detachably connected to the support shell, the protruding portion is protrudingly arranged on one side of the body in the extension direction of the reference axis and is arranged around the outside of the reference axis, the protruding portion is accommodated in the first accommodating cavity and abuts against the other side of the rotating connecting member in the extension direction of the reference axis; The fourth sealing member is elastic and is sandwiched between the outer peripheral surface of the protruding portion and the side wall surface of the first accommodating cavity which is arranged around the reference axis.

12. The rotary support device according to claim 11, characterized in that: The supporting shell comprises: A main body, wherein the main body has the first accommodating cavity and the second accommodating cavity; A first connecting portion, which is sleeved outside the main body and has a plurality of notches arranged at intervals around the reference axis; A plurality of baffles, each of which corresponds to the notch one by one, and each of which is detachably connected to the first connecting portion and is located in the corresponding notch; a second connecting portion, the second connecting portion being connected between the main body portion and the first connecting portion; The mounting portion is connected to the first connecting portion and is located radially outside the first connecting portion. The mounting portion is used to be fixedly connected to the housing of the engine.

13. A test system for testing an engine, characterized in that: include: A test device having a second rotating shaft; Couplings; A rotating support device, wherein the rotating support device is any one of the rotating support devices according to claims 1 to 12, and the connecting assembly is connected to the second rotating shaft through the coupling.

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