Bearing vibration detection device

Abstract

The invention relates to the technical field of bearing detection equipment, and particularly discloses a bearing vibration detection device which comprises a seat body and an air exhaust mechanism, a detection station for bearing placement is arranged on the seat body, the air exhaust mechanism is used for extracting air in a bearing, and the detection station is further provided with a driving mechanism and a detection mechanism; the driving mechanism comprises a driving part and a fixing part, the fixing part movably abuts against the inner wall of the bearing, and the driving part drives the fixing part to rotate; the detection mechanism comprises a shell and a plurality of groups of detection assemblies, the shell is matched with the seat body in a lifting manner, an annular cavity is formed in the shell, and each detection assembly is arranged in the annular cavity; the detection assembly comprises a detection cavity, a movable part, a plugging part and a marking structure, the lower end of the detection cavity is open, the movable part is in longitudinal sliding fit with the detection cavity, the movable part pushes the plugging part to slide relative to the marking structure when moving and movably plugs the liquid outlet end of the marking structure, and the detection efficiency and effect are improved through the detection device.

Description

Technical Field

[0001] The invention relates to the technical field of bearing detection equipment, and in particular to a bearing vibration detection device. Background Art

[0002] During the production and processing of bearings, in order to ensure that they can effectively prevent the entry of dust, moisture and other contaminants in specific applications, especially in some special application scenarios, such as bearings used in humid environments or in equipment that requires high cleanliness and dust-free conditions, it is necessary to test the airtightness between the bearing and the sealing ring. In related technologies, the sealing of the bearing is often tested by a pressure decay tester. When testing the bearing pressure, the pressure decay tester fills the inside of the bearing to be tested with gas at a certain pressure, then shuts down the system and detects the pressure changes in the bearing over a period of time. If the pressure drops significantly, it indicates that there is a defect in the airtightness of the bearing. This detection method requires a long waiting time, resulting in low detection efficiency.

[0003] The patent document with the authorization announcement number CN209470816U discloses a wheel hub bearing sealing ring air tightness detection device, including a wheel hub bearing, a sealing plate and a sealing body. The wheel hub bearing includes an outer ring and at least two inner rings matched with the outer ring. The sealing column of the sealing body passes through all the inner rings, and locking blocks are arranged at both ends of the sealing column. The sealing plate, the wheel hub bearing and the sealing body cooperate to form a sealing cavity. An air nozzle is arranged on the sealing plate. The air pump inflates the sealing cavity through the air nozzle. The entire device except the air pump is immersed in the liquid. Whether bubbles emerge from the wheel hub bearing sealing ring can be observed to determine whether the sealing performance of the wheel hub bearing meets the requirements. The air tightness detection device of the patent document is convenient for quickly and intuitively judging whether the air tightness of the bearing is qualified, thereby improving the efficiency of air tightness detection.

[0004] The air tightness detection equipment in the related art and the air tightness detection device provided in the above-mentioned patent document mostly detect stationary bearings. The sealing ring needs to ensure that dust, moisture and other contaminants do not invade the inside of the bearing during operation. The bearing may vibrate during operation. It is difficult to ensure that the bearing has qualified air tightness conditions during operation by only checking the air tightness of the bearing in a stationary state. In addition, during the detection operation, it is also necessary to adjust the position of the air tightness defect of the bearing that fails the detection so that the air tightness of the bearing meets the production requirements. The air tightness detection equipment in the related art is not convenient for determining the specific position of the air tightness defect on the bearing, which affects the efficiency of the detection operation. Summary of the invention

[0005] The present invention provides a bearing vibration detection device, which aims to solve the problem that the detection device in the related art only performs air tightness detection on the bearing in a static state, resulting in poor reliability of the detection result and inconvenience in confirming the specific location of the air tightness defect on the bearing during the detection process, thereby affecting the detection efficiency.

[0006] A bearing vibration detection device of the present invention comprises a seat body and an air extraction mechanism, wherein the seat body is provided with an inspection station for placing the bearing, the air extraction mechanism is used to fill gas into the bearing, and the inspection station is also provided with a driving mechanism and a detection mechanism; The driving mechanism comprises a driving member and a fixing member, wherein the fixing member is used to movably abut against the inner wall of the bearing, and the driving member drives the fixing member to rotate; The detection mechanism includes a shell and multiple groups of detection components. The shell is in lifting cooperation with the seat body. The shell is provided with an annular cavity longitudinally opposite to the bearing sealing ring, and each detection component is arranged in an annular cavity; the detection component includes a detection cavity, a movable part, a sealing part and a marking structure. The lower end of the detection cavity is open. The movable part is arranged in the detection cavity and longitudinally slides with the detection cavity. The marking structure is arranged in the detection cavity. When the movable part moves, it pushes the sealing part to slide relative to the marking structure, and movably blocks the liquid outlet end of the marking structure to change the liquid outlet state of the marking structure.

[0007] The efficiency of the bearing air tightness detection operation and the reliability of the detection results are improved. The driving mechanism is used to drive the cylinder inside the bearing to rotate to simulate the state of the bearing in use. The detection mechanism detects the airtightness gap of the bearing in the running state. Compared with the direct detection of the static bearing in the related technology, it can directly reflect the airtightness of the bearing during use, and improves the reliability of the detection results. Each group of detection components in the detection mechanism performs sealing detection on the detection surface of the bearing in different areas. When an airtightness defect occurs in the detection area corresponding to the detection cavity, the air pressure in the detection cavity changes, and the movable part moves under the action of the air pressure change, and the blocking state of the marking structure is adjusted by the blocking part. The marking structure sprays the marking liquid to the detection area, so that after the airtightness detection is completed, the staff can intuitively observe the airtightness state of the bearing according to the position where the marking liquid appears on the bearing, and quickly determine the position of the airtightness defect on the bearing, so that the staff can quickly deal with the defective position later.

[0008] Preferably, two connecting pieces are longitudinally slidably provided in the annular cavity, two adjacent detection cavities are respectively connected to the two connecting pieces, two adjacent detection cavities are fitted together, and the detection cavity is fitted together with two arc-shaped inner walls of the annular cavity.

[0009] To avoid detection blind spots at positions blocked by the side walls of the detection cavity during air tightness detection operations, the detection surface of the bearing is detected by lifting and lowering each group of detection components at intervals. During the detection process, the lifting and lowering of each detection component is controlled to cooperate with each other, and the adjacent detection components are spaced and fit with the detection surface, so that the detection cavity separated from the detection surface can still form a relatively closed detection space with the bearing detection surface. Adjacent detection components are alternately fitted with the bearing detection surface, which can avoid the detection cavity side wall blocking the detection surface during the bearing air tightness detection process and improve the reliability of the detection results.

[0010] Preferably, the movable member is provided with a connecting groove, the blocking member is slidably matched with and elastically connected to the connecting groove, the blocking member is provided with a communicating groove, the inner wall of the detection cavity is provided with an adjusting groove, and the blocking member abuts against the adjusting groove; The marking structure includes a storage cavity, a movable tube and a liquid outlet head. The storage cavity stores marking liquid. One end of the movable tube extends into the storage cavity and communicates with the storage cavity. The other end of the movable tube is movable relative to the communicating groove. The liquid outlet head is coaxially arranged with the movable tube.

[0011] Preferably, a piston plate is fixed to the end of the movable tube extending into the storage chamber, a through hole is provided on the piston plate, a blocking rod is fixed in the storage chamber, the blocking rod slides in cooperation with the through hole on the piston plate, and a liquid inlet is provided at the end of the movable tube extending into the storage chamber.

[0012] The sensitivity of the marking structure is guaranteed. When an airtight defect appears in the corresponding area of ​​the bearing detection surface, the movable part moves in the detection cavity and drives the movable tube to slide relative to the storage cavity. The marking liquid in the storage cavity enters the liquid outlet head through the movable tube and is sprayed out by the liquid outlet head to mark the position of the airtight defect on the bearing.

[0013] Preferably, the two connecting members are each provided with a liquid inlet channel communicating with each storage cavity.

[0014] Preferably, the blocking member slides against the inner wall of the connecting groove, one end of the blocking member is connected to the connecting groove via an elastic member, and the other end of the blocking member is in an arc shape, and the arc end of the blocking member slides against the adjusting groove.

[0015] Preferably, the adjustment groove is in a groove shape, and the depth of the adjustment groove decreases from top to bottom.

[0016] Ensure the fit between the movable part and the inner wall of the detection cavity, reduce the gas exchange in the space on both sides of the movable part, so that when an airtight defect occurs at the covering position of the detection cavity, the movable part can be triggered to move in time and the defect position can be further marked.

[0017] Preferably, the movable member is connected to the detection cavity via a return spring.

[0018] After one air tightness detection operation is completed, the reset spring drives the movable part to return to the initial position, thereby realizing the reset operation of the movable part and ensuring the repeated and effective operation of the detection device.

[0019] Preferably, the fixing member comprises a fixing portion and two pressing portions, the two pressing portions are elastically slidably connected to two end portions of the fixing portion, and the two pressing portions abut against an inner wall of the bearing.

[0020] Preferably, there are a plurality of the inspection stations, each of which is provided with an annular fixing groove, in which an air extraction hole is provided, and the air extraction hole is connected to the air extraction mechanism and is opposite to the annular gap of the bearing.

[0021] The beneficial effects of the present invention are: (1) The efficiency of the bearing air tightness detection operation and the reliability of the detection results are improved. The driving mechanism drives the cylinder inside the bearing to rotate to simulate the state of the bearing in use. The detection mechanism detects the air tightness gap of the bearing in the running state. Compared with the direct detection of the static bearing in the related technology, it can directly reflect the air tightness of the bearing during use, thereby improving the reliability of the detection results. Each group of detection components in the detection mechanism performs sealing detection on the detection surface of the bearing in different areas. When an air tightness defect occurs in the detection area corresponding to the detection cavity, the air pressure in the detection cavity changes, and the movable part moves under the action of the air pressure change, and adjusts the sealing state of the marking structure through the sealing part. The marking structure sprays the marking liquid to the detection area, so that after the air tightness detection is completed, the staff can intuitively observe the air tightness state of the bearing according to the position where the marking liquid appears on the bearing, and quickly determine the position of the air tightness defect on the bearing, so that the staff can quickly deal with the defective position later.

[0022] (2) To avoid blind spots in the detection area where the side wall of the detection cavity blocks the detection surface during the air tightness detection operation, the detection surface of the bearing is detected by lifting and lowering each group of detection components at intervals. During the detection process, the lifting and lowering of each detection component is controlled to make the detection components cooperate with each other, and the adjacent detection components are spaced and fit with the detection surface, so that the detection cavity separated from the detection surface can still form a relatively closed detection space with the detection surface of the bearing. The adjacent detection components are alternately fitted with the detection surface of the bearing, which can avoid the detection cavity side wall blocking the detection surface during the bearing air tightness detection process and improve the reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2It is a schematic diagram of the internal structure of the detection mechanism in the present invention.

[0025] Figure 3 It is a structural schematic diagram of the arrangement of the fixed groove relative to the detection station in the present invention.

[0026] Figure 4 It is a schematic diagram of the internal structure of the detection component in the present invention.

[0027] Reference numerals: 1. Base body; 11. Detection station; 12. Fixed groove; 2. Driving member; 21. Fixed part; 22. Pressing part; 3. Shell; 31. Detection chamber; 311. Adjustment groove; 32. Movable member; 33. Blocking member; 331. Communication groove; 34. Reset spring; 35. Connecting member; 4. Storage chamber; 41. Movable tube; 411. Piston plate; 412. Blocking rod; 42. Liquid outlet; 5. Bearing. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figures 1 to 3 As shown, the bearing vibration detection device of the present invention includes a base body 1, and the base body 1 is provided with a detection station 11 for placing the bearing 5 to be detected. In order to improve the detection efficiency, a plurality of detection stations 11 can be set, and each detection station 11 is provided with an annular fixing groove 12, and an exhaust hole is provided in the fixing groove 12. The exhaust hole is connected to the exhaust mechanism and is opposite to the annular gap of the bearing 5. The annular gap on the bearing 5 is the position for placing the sealing ring of the bearing 5. The exhaust mechanism sucks the gas inside the bearing 5 through the exhaust hole. The interior of the bearing 5 refers to the space between the two cylinders of the bearing 5, so that a relatively negative pressure state is formed inside the bearing 5. The exhaust mechanism belongs to the prior art, and its specific structure and working method will not be described here.

[0030] Each inspection station 11 is also provided with a driving mechanism and an inspection mechanism, such as Figure 3As shown, the driving mechanism includes a driving member 2 and a fixing member, the fixing member is used to movably abut against the inner wall of the bearing 5, the driving member 2 drives the fixing member to rotate, after the bearing 5 to be tested is placed in the testing station 11, the fixing member of the driving assembly abuts against the inner wall of the bearing 5, when the driving member 2 drives the fixing member to rotate, the cylinder inside the bearing 5 rotates with the fixing member, so as to simulate the running state of the bearing 5 during working process, and ensure the reliability of the test result, in order to improve the relative fixing strength between the fixing member and the bearing 5 when the fixing member abuts against the inner wall of the bearing 5, the fixing member includes a fixing part 21 and two pressing parts 22, the two pressing parts 22 and the fixing member The two ends of the fixed part 21 are elastically slidably connected, and the pressing part 22 can be connected to the fixed part 21 by an elastic rod or a spring. The two pressing parts 22 abut against the inner wall of the bearing 5 under the action of elastic force, thereby improving the relative fixing strength between the pressing part 22 and the inner wall of the bearing 5, so as to ensure that when the driving part 2 is working, the cylinder inside the bearing 5 can be driven to rotate through the fixing part to detect the sealing performance of the bearing 5 in the running state, thereby ensuring the reliability of the detection result. In order to further improve the friction between the pressing part 22 and the inner side of the bearing 5, a rubber gasket can also be arranged at the end of the pressing part 22, and the rubber gasket can be arranged to have a rough surface.

[0031] like Figure 2 and Figure 4 As shown, the detection mechanism includes a shell 3 and multiple groups of detection components. The shell 3 is lifted and lowered with the base 1, and the shell 3 abuts against the upper end of the bearing 5. The shell 3 is connected to the base 1 through a cylinder. The protruding end of the cylinder is fixed to the upper end of the shell 3. When the cylinder drives the shell 3 to move longitudinally, the shell 3 and the base 1 are lifted and lowered. An annular cavity is provided on the shell 3, which is longitudinally opposite to the sealing ring of the bearing 5. The lower end of the annular cavity is open, and the width of the annular cavity is not less than the width of the sealing ring. After the bearing 5 is placed in the detection station 11, the shell 3 is driven downward by the cylinder to make the annular cavity cover at the lower end of the shell 3 set on the sealing ring, and each detection component is arranged in the annular cavity.

[0032] The detection component includes a detection chamber 31, a movable part 32, a sealing part 33 and a marking structure. Two adjacent detection chambers 31 are arranged in a close fit, and the detection chamber 31 is in a close fit with the two arc-shaped inner walls of the annular chamber at the same time. The lower end of the detection chamber 31 is open. When the shell 3 is in a close fit with the upper end of the bearing 5, the lower end of each detection chamber 31 is in a close fit with the upper end surface of the bearing 5, and the width of the detection chamber 31 is not less than the width of the sealing ring. The movable part 32 is arranged in the detection chamber 31 and slides with the detection chamber 31 longitudinally. The movable part 32 is connected to the detection chamber 31 through a reset spring 34. The marking structure is arranged in the detection chamber 31. When the movable part 32 moves, it pushes the sealing part 33 to slide relative to the marking structure, and movably seals the liquid outlet end of the marking structure to change the liquid outlet state of the marking structure.

[0033] A connecting groove is provided on the movable part 32, and the sealing part 33 is slidably matched with the connecting groove and elastically connected. The sealing part 33 slides along the inner wall of the connecting groove. One end of the sealing part 33 is connected to the connecting groove through an elastic part, and the other end of the sealing part 33 is in an arc shape. An adjusting groove 311 is provided on the inner wall of the detection cavity 31. The arc end of the sealing part 33 slides against the adjusting groove 311, and the depth of the adjusting groove 311 decreases from top to bottom. A connecting groove 331 is provided on the sealing part 33.

[0034] The marking structure includes a storage chamber 4, a movable tube 41 and a liquid outlet head 42. The movable tube 41 and the liquid outlet head 42 are movable relative to each other. Marking liquid is stored in the storage chamber 4. The movable tube 41 is in the shape of a hollow rod. One end of the movable tube 41 is movable relative to the connecting groove 331 so that when the blocking member 33 is squeezed into the connecting groove by the adjusting groove 311, the movable tube 41 is connected with the connecting groove 331. The other end of the movable tube 41 extends into the storage chamber 4, and a piston plate 411 is fixed in the storage chamber 4. The piston plate 411 slides against the inner wall of the storage chamber 4. The movable tube 41 is also provided with a liquid inlet at the end of the storage chamber 4. The movable tube 41 is connected with the inside of the storage chamber 4 through the liquid inlet. When the movable tube 41 moves, it drives the piston plate 411 to move. The piston plate 411 slides with the movable tube 41 and squeezes the marking liquid in the storage chamber 4, so that the marking liquid enters the movable tube 41 through the liquid inlet.

[0035] When the sealing ring and the bearing 5 in the corresponding area of ​​the detection chamber 31 have a sealing problem, that is, there is a gap between the sealing ring and the bearing 5, the gas inside the detection chamber 31 enters the bearing 5 from the gap and is extracted, the pressure inside the detection chamber 31 decreases, and the movable part 32 moves downward under the action of the negative pressure. When the movable part 32 moves downward relative to the detection chamber 31, the blocking part 33 moves downward with the movable part 32, and the blocking part 33 slides in the adjustment groove 311. As the depth of the adjustment groove 311 gradually decreases from top to bottom, the blocking part 33 moves downward and slides relative to the connecting groove, until the connecting groove 331 on the blocking part 33 gradually connects with the liquid outlet head 42. When the movable part 32 moves downward, it will also drive the movable tube 41 and the piston plate 411 to move. The piston plate 411 squeezes the marking liquid in the storage chamber 4 into the movable tube 41. The movable tube 41 and the liquid outlet head 42 are coaxially arranged. When the blocking part 33 moves to the connecting groove 331 and is opposite to the movable tube 41 and the liquid outlet head 42, the marking liquid in the movable tube 41 enters the liquid outlet head 42 through the connecting groove 331 and marks the position where the sealing ring and the bearing 5 have unqualified sealing. This makes it convenient for the staff to quickly identify the sealing defect position and handle it according to the position of the marking liquid after the inspection is completed, thereby improving the inspection efficiency and inspection effect.

[0036] When each detection component works independently, since the side wall of the detection chamber 31 has a certain thickness, if the leakage position of the sealing ring and the bearing 5 is relative to the side wall of the detection chamber 31, the leakage position will be covered, and the problem of incomplete detection of the bearing 5 will occur. Although reducing the thickness of the side wall of the detection chamber 31 can reduce the hidden danger of incomplete detection of the bearing 5, if the thickness of the side wall of the detection chamber 31 is too small, it may cause the sealing strength between the detection chamber 31 and the bearing 5 to be reduced during the detection process.

[0037] To ensure the accuracy of the detection results, two connecting pieces 35 are longitudinally slidably provided in the annular cavity, and two adjacent detection cavities 31 are respectively connected to the two connecting pieces 35, and a cylinder can be used to control the lifting and lowering movements of the two connecting pieces 35 in the annular cavity. Specifically, each of the two connecting pieces 35 is fixed with a connecting shaft, and the connecting shaft fixed to the lower connecting piece 35 is longitudinally slidably matched with the upper connecting piece 35, and the two connecting shafts are respectively connected to the protruding ends of the two cylinders, wherein the cylinder is not shown in the figure. During the detection operation, the bottom of each detection cavity 31 connected to one connecting piece 35 is kept in contact with the upper end surface of the bearing 5, and the bottom of each detection cavity 31 connected to the other connecting piece 35 is separated from the upper end surface of the bearing 5, that is, Each detection cavity 31 is in a state of being separated from the upper end surface of the bearing 5. For the convenience of description, the detection cavity 31 that is in contact with the bearing 5 is called detection cavity one, and the detection cavity 31 separated from the bearing 5 is called detection cavity two. A relatively sealed space is formed between the two detection cavities one adjacent to the detection cavity two and the side wall of the annular cavity. Even if the detection cavity two does not contact the detection surface, a relatively sealed space is still formed between the inside of the detection cavity two and the upper end surface of the bearing 5, and the first sealing detection operation is performed. In this detection operation, the side wall of the detection cavity two does not fit the bearing 5, so that the area opposite to the upper end of the detection cavity two and the bearing 5 can be fully detected, thereby avoiding the situation where the detection cavity two blocks the detection surface of the bearing 5 and affects the detection result.

[0038] Afterwards, each detection cavity 1 is driven to separate from the detection surface, and each detection cavity 2 is made to fit the detection surface, and the detection area is replaced to ensure that the detection surface of the bearing 5 is comprehensively and fully detected. A relatively sealed space is formed between the two detection cavities 2 adjacent to the detection cavity 1 and the side wall of the annular cavity. Then, a second sealing detection operation is performed. In the second detection operation, the side wall of the detection cavity 1 does not fit the detection surface of the bearing 5, so that the area opposite to the detection cavity 1 and the detection surface of the bearing 5 is fully detected. By using the detection method of fitting the detection surface of the bearing 5 with each detection cavity 31 at intervals, the detection surface of the bearing 5 is detected twice, which can effectively avoid the problem of the side wall of the detection cavity 31 blocking the detection surface and affecting the detection result, thereby ensuring the reliability of the air tightness detection result of the bearing 5.

[0039] The detection chamber 31 and the movable part 32 are also connected by a reset spring 34. The reset spring 34 can be sleeved on the outside of the movable tube 41 and the storage chamber 4. One end of the reset spring 34 is fixed to the detection chamber 31, and the other end of the reset spring 34 is fixed to the movable part 32. The movable part 32 moves relative to the detection chamber 31 when the air pressure changes, and stretches the reset spring 34 to store force in the reset spring 34. After a detection operation is completed, the movable part 32 is reset under the elastic force of the reset spring 34.

[0040] In order to facilitate the regular replenishment of marking liquid into the storage chamber 4, a liquid inlet channel can be set inside the connecting piece 35. The connecting piece 35 is also connected to a liquid inlet pipe, which is communicated with the liquid inlet channel. The marking liquid to be replenished enters the liquid inlet channel through the liquid inlet pipe and enters each storage chamber 4 through the liquid inlet channel. A through hole is also provided on the piston plate 411. The marking liquid replenished to the storage chamber 4 enters the inner side of the piston plate 411 through the through hole. A sealing rod 412 is also provided in the storage chamber 4. The sealing rod 412 slides in cooperation with the through hole. When the sealing rod 412 is separated from the through hole, the through hole is opened and the marking liquid can pass through the through hole. After the sealing rod 412 is extended into the through hole, the through hole is blocked. Through the setting of the through hole and the liquid inlet channel, the marking liquid can be replenished in time into the storage chamber 4 to ensure the normal and stable operation of the marking structure.

[0041] The bearing vibration detection device provided by the present invention cooperates with a driving mechanism and a detection mechanism. The driving mechanism drives the inner ring of the bearing to rotate to simulate the operating state of the bearing. The detection mechanism detects the airtightness of the sealing ring on the bearing and marks the position of the airtightness defect through multiple groups of detection components, thereby effectively improving the efficiency of bearing detection and the reliability of the detection results.

[0042] In the description of the present invention, 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", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A bearing vibration detection device, comprising a seat (1) and an exhaust mechanism, wherein the seat (1) is provided with an inspection station (11) for placing a bearing (5), and the exhaust mechanism is used to extract gas in the bearing (5), characterized in that: The detection station (11) is also provided with a driving mechanism and a detection mechanism; The driving mechanism comprises a driving member (2) and a fixing member, wherein the fixing member is used to movably abut against an inner wall of a bearing (5), and the driving member (2) drives the fixing member to rotate; The detection mechanism comprises a housing (3) and a plurality of detection components. The housing (3) is in lifting cooperation with the base (1). The housing (3) is provided with an annular cavity longitudinally opposite to the sealing ring of the bearing (5), and each of the detection components is arranged in an annular cavity. The detection component comprises a detection cavity (31), a movable part (32), a blocking part (33) and a marking structure. The lower end of the detection cavity (31) is open. The movable part (32) is arranged in the detection cavity (31) and is longitudinally slidably cooperated with the detection cavity (31). The marking structure is arranged in the detection cavity (31). When the movable part (32) moves, it pushes the blocking part (33) to slide relative to the marking structure, and movably blocks the liquid outlet end of the marking structure to change the liquid outlet state of the marking structure.

2. The bearing vibration detection device according to claim 1, characterized in that: Two connecting pieces (35) are longitudinally slidably disposed in the annular cavity, two adjacent detection cavities (31) are respectively connected to the two connecting pieces (35), two adjacent detection cavities (31) are arranged in close contact with each other, and the detection cavities (31) are simultaneously in close contact with two arc-shaped inner walls of the annular cavity.

3. The bearing vibration detection device according to claim 2, characterized in that: The movable member (32) is provided with a connecting groove, the blocking member (33) is slidably matched with and elastically connected to the connecting groove, the blocking member (33) is provided with a communicating groove (331), the inner wall of the detection cavity (31) is provided with an adjusting groove (311), and the blocking member (33) abuts against the adjusting groove (311); The marking structure comprises a storage cavity (4), a movable tube (41) and a liquid outlet head (42); the storage cavity (4) stores a marking liquid; one end of the movable tube (41) extends into the storage cavity (4) and communicates with the storage cavity (4); the other end of the movable tube (41) is movably opposed to the communication groove (331); and the liquid outlet head (42) is coaxially arranged with the movable tube (41).

4. The bearing vibration detection device according to claim 3, characterized in that: A piston plate (411) is fixed to the end of the movable tube (41) extending into the storage chamber (4), and a through hole is provided on the piston plate (411). A blocking rod (412) is fixed in the storage chamber (4), and the blocking rod (412) is slidably engaged with the through hole on the piston plate (411). A liquid inlet is provided at the end of the movable tube (41) extending into the storage chamber (4).

5. The bearing vibration detection device according to claim 3, characterized in that: The two connecting members (35) are each provided with a liquid inlet channel in communication with each of the storage chambers (4).

6. The bearing vibration detection device according to claim 3, characterized in that: The blocking piece (33) slides in contact with the inner wall of the connecting groove, one end of the blocking piece (33) is connected to the connecting groove via an elastic piece, the other end of the blocking piece (33) is in an arc shape, and the arc end of the blocking piece (33) slides against the adjusting groove (311).

7. The bearing vibration detection device according to claim 6, characterized in that: The adjustment groove (311) is in the shape of a groove, and the depth of the adjustment groove (311) decreases from top to bottom.

8. The bearing vibration detection device according to claim 6, characterized in that: The movable part (32) is connected to the detection chamber (31) via a return spring (34).

9. The bearing vibration detection device according to claim 1, characterized in that: The fixing member comprises a fixing portion (21) and two pressing portions (22), the two pressing portions (22) being elastically slidably connected to two end portions of the fixing portion (21), and the two pressing portions (22) being in contact with the inner wall of the bearing (5).

10. The bearing vibration detection device according to claim 1, characterized in that: There are a plurality of detection stations (11), each of which is provided with an annular fixing groove (12), an air extraction hole being provided in the fixing groove (12), the air extraction hole being connected to the air extraction mechanism and being opposite to the annular gap of the bearing (5).

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