Lubricating state monitoring device for sliding bearing

Abstract

The utility model relates to the technical field of bearing lubrication state monitoring, in particular to a lubrication state monitoring device for a sliding bearing, which comprises a bearing seat, a linkage component and an alarm component, the bearing seat is provided with a mounting hole for mounting the sliding bearing, the alarm component is mounted on the bearing seat, and the linkage component is connected with the alarm component. The linkage assembly is movably connected with the bearing seat, one end of the linkage assembly extends into lubricating oil between the sliding bearing and the shaft neck, and when the shaft neck drives one end of the linkage assembly to rotate, the other end of the linkage assembly abuts against the alarm assembly and triggers the alarm assembly. When the linkage assembly rotates due to lack of lubricating oil, the other end of the linkage assembly can abut against the alarm assembly and trigger the alarm assembly, a worker can find the problem that the lubricating oil is insufficient in time and conduct maintenance and overhaul, and therefore the problem that a bearing or a journal is damaged due to the fact that the lubricating oil is insufficient is solved, and normal operation of equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing lubrication state monitoring technical field more specifically, relate to a kind of lubrication state monitoring device for sliding bearing. BACKGROUND

[0002] Sliding bearing is a kind of bearing under sliding friction, and the shaft section connected with sliding bearing is called journal, and the sliding bearing part matched with journal is called bearing bush.Under liquid lubrication condition, the sliding surface between journal and bearing bush is separated by lubricating oil without direct contact, which can greatly reduce friction loss and surface wear, and oil film also has certain vibration absorption capacity.

[0003] When the lubricating oil between journal and sliding bearing is insufficient, direct contact between journal and sliding bearing will occur, which will cause excessive wear on the surface of journal.When the surface of journal is too high due to friction temperature, it will also cause sintering phenomenon of journal.Therefore, the lubricating oil between journal and sliding bearing of existing sliding bearing needs to be replenished regularly during working process to ensure normal operation of equipment.However, it is difficult to monitor the lubricating oil state in real time during actual working process, and once the lubricating oil is insufficient due to failure of journal or sliding bearing, the damage of bearing and journal will occur if it is not found in time, which will affect the normal operation of equipment. SUMMARY

[0004] The utility model discloses to overcome the problem that it is difficult to monitor the lubricating oil state between journal and sliding bearing in real time in the prior art, and provide a kind of lubrication state monitoring device for sliding bearing, can find the problem of insufficient lubricating oil in time, to ensure normal operation of equipment.

[0005] To solve the above technical problems, the utility model adopts the technical scheme: a kind of lubrication state monitoring device for sliding bearing, including bearing seat, linkage assembly and alarm assembly, the bearing seat has the mounting hole for installing sliding bearing, the alarm assembly is installed on the bearing seat, one end of the linkage assembly extends to the lubricating oil between the sliding bearing and journal, when the journal drives the rotation of one end of the linkage assembly, the other end of the linkage assembly and the alarm assembly are abutted and trigger the alarm assembly.

[0006] In the technical scheme of the utility model, the linkage assembly is movably connected with the bearing seat, one end of the linkage assembly extends into the lubricating oil, when the lubricating oil is sufficient, the linkage assembly does not directly contact with the journal, at this time, the linkage assembly does not rotate, when the lubricating oil is insufficient, the linkage assembly directly contacts with the journal, the journal drives the linkage assembly to rotate under the friction force, when the linkage assembly rotates, the other end of the linkage assembly abuts against the alarm assembly and triggers the alarm assembly, so that the staff can find the problem of insufficient lubricating oil in time and carry out maintenance, thereby reducing the problem of bearing or journal damage caused by insufficient lubricating oil and guaranteeing normal operation of the equipment.

[0007] Further, the alarm assembly comprises a shell, an alarm body and a movable block, the shell is fixedly connected with the top of the bearing seat, the alarm body is fixedly connected with the shell, the movable block is movably connected with the shell and is located at the bottom of the alarm body, the upper end of the movable block is provided with a conductive part for communicating with the alarm body, and the lower end of the movable block is provided with an inclined surface for abutting against the linkage assembly.

[0008] In the scheme, when the linkage assembly rotates, the inclined surface of the lower end of the movable block can push the movable block to move upward, so that the conductive part at the upper end of the movable block communicates with the alarm, thereby enabling the alarm assembly to send an alarm signal.

[0009] Further, the linkage assembly comprises a top rod and a U-shaped plate, the lower end of the top rod is fixedly connected with the top of the U-shaped plate, the upper end side of the bearing seat is provided with a circular-arc sliding groove extending in the circumferential direction, the upper end of the U-shaped plate is slidably connected with the circular-arc sliding groove, the lower end of the U-shaped plate extends into the lubricating oil between the sliding bearing and the journal, and the upper end of the top rod abuts against the lower end of the movable block.

[0010] In the scheme, the upper end of the U-shaped plate is slidably connected with the bearing seat through the circular-arc sliding groove, the lower end of the U-shaped plate extends into the lubricating oil, and the lower end of the U-shaped plate abuts against the movable block through the top rod, so that the structure of the linkage assembly is more compact.

[0011] Further, the upper end of the bearing seat is internally provided with a lubricating oil cavity, the circular-arc sliding groove is in communication with the lubricating oil cavity, the upper end of the U-shaped plate passes through the circular-arc sliding groove and extends into the lubricating oil cavity, the top of the lubricating oil cavity is provided with an opening in communication with the inside of the shell, and the top rod is arranged in the lubricating oil cavity and passes through the opening to abut against the lower end of the movable block.

[0012] In the scheme, the upper end of the U-shaped plate and the top rod are arranged in the lubricating oil cavity, so that the compactness of the overall structure is improved.

[0013] Furthermore, the interior of the shell is vertically provided with a first cavity and a second cavity in sequence, the alarm body is installed in the first cavity, a sliding channel is provided between the first cavity and the second cavity, the movable block is slidably connected in the sliding channel, the upper end of the movable block is located in the first cavity, and the lower end of the movable block is located in the second cavity.

[0014] In this solution, the interior of the shell is divided into a first cavity and a second cavity, and the alarm body is arranged in the upper first cavity to prevent the lubricating oil from affecting the alarm body.

[0015] Furthermore, the upper end of the movable block is provided with a limiting portion, and the size of the limiting portion is larger than the size of the sliding channel.

[0016] In this solution, the movable block can be limited by the limiting portion to prevent the movable block from falling off from the sliding channel.

[0017] Furthermore, the lubricating oil chamber contains lubricating oil, a lubricating oil flow channel is opened inside the 匚-shaped plate, the upper end of the 匚-shaped plate has a lubricating oil inlet, and the lower end of the 匚-shaped plate has a lubricating oil outlet, and the lubricating oil inlet and the lubricating oil outlet are respectively connected to the lubricating oil flow channel.

[0018] In this solution, the lubricating oil in the lubricating oil chamber can enter from the lubricating oil inlet, pass through the lubricating oil flow channel and flow out from the lubricating oil outlet, so as to replenish the lubricating oil between the sliding bearing and the journal.

[0019] Furthermore, a blocking member is fixedly connected to the lubricating oil chamber. When the linkage assembly is not deflected, the blocking member blocks the lubricating oil inlet. When the linkage assembly is deflected, the lubricating oil inlet is at least partially connected to the lubricating oil chamber.

[0020] In this embodiment, due to the presence of the blocking member, when there is sufficient lubricating oil between the sliding bearing and the shaft journal, the linkage assembly does not deflect. Therefore, the blocking member can block the lubricating oil inlet, preventing the lubricating oil in the lubricating oil chamber from flowing out. When there is insufficient lubricating oil between the sliding bearing and the shaft journal, the linkage assembly deflects, allowing the lubricating oil inlet to at least partially communicate with the lubricating oil chamber, allowing the lubricating oil in the lubricating oil chamber to flow between the sliding bearing and the shaft journal for replenishment.

[0021] Furthermore, sealing members are fixedly connected to both sides of the upper end of the 匚-shaped plate, and the sealing members abut against the circular arc sliding groove and are used to seal the circular arc sliding groove.

[0022] In this solution, since a seal is provided, when the 匚-shaped plate is deflected or not, the seal can seal the gap between the two sides of the 匚-shaped plate and the arc-shaped sliding groove, thereby preventing lubricating oil from leaking from the arc-shaped sliding groove.

[0023] Furthermore, elastic connecting members are provided on both sides of the 匚-shaped plate, one end of the elastic connecting member is fixedly connected to the 匚-shaped plate, and the other end of the elastic connecting member is fixedly connected to the inner wall of the lubricating oil chamber.

[0024] In this solution, since elastic connecting parts are provided on both sides of the 匚-shaped plate, after the lubricating oil is replenished between the sliding bearing and the shaft neck, the lower end of the 匚-shaped plate is in frictional contact with the shaft neck, and the 匚-shaped plate can return to its original position under the action of the elastic parts.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] First, in the device of the present invention, since one end of the linkage assembly extends into the lubricating oil, when the lubricating oil is sufficient, the linkage assembly will not directly contact the shaft neck and will not rotate. When the lubricating oil is insufficient, the linkage assembly will directly contact the shaft neck, and the shaft neck will drive the linkage assembly to rotate due to friction. When the linkage assembly rotates, the other end of the linkage assembly will abut against the alarm assembly and trigger the alarm assembly, allowing staff to promptly detect the problem of insufficient lubricating oil and perform maintenance and repairs, thereby reducing the risk of bearing or shaft neck damage caused by insufficient lubricating oil and ensuring the normal operation of the equipment.

[0027] 2. The device of the present invention has a lubricating oil chamber in the bearing seat for storing lubricating oil, and a lubricating oil flow channel is opened inside the 匚-shaped plate, which can replenish the lubricating oil between the sliding bearing and the journal to ensure sufficient lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of the lubrication condition monitoring device for sliding bearings of the present invention;

[0029] Figure 2 It is from Figure 1 A cross-sectional view from the back;

[0030] Figure 3 yes Figure 2 Exploded diagram;

[0031] Figure 4 yes Figure 3 A magnified view of point A;

[0032] Figure 5 Schematic diagram of the structure of the linkage assembly, wherein the 匚-shaped plate portion is a cross-sectional view;

[0033] Figure 6 is a partial structure diagram of a bearing seat.

[0034] In the drawings: 1, bearing seat; 11, circular arc sliding groove; 12, lubricating oil cavity; 13, plugging piece; 2, linkage assembly; 21, top rod; 22, U-shaped plate; 221, lubricating oil flow channel; 222, lubricating oil inlet; 223, lubricating oil outlet; 23, sealing piece; 3, alarm assembly; 31, shell; 311, first containing cavity; 312, second containing cavity; 313, sliding channel; 32, alarm body; 33, movable block; 331, conductive part; 332, inclined surface; 333, limiting part. DETAILED DESCRIPTION

[0035] The drawings are only used for illustrative description, and should not be understood as limiting the patent; in order to better illustrate the embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures in the drawings and their descriptions may be omitted. The positional relationship described in the drawings is only used for illustrative description, and should not be understood as limiting the patent.

[0036] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar parts; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore the terms describing the positional relationship in the drawings are only used for illustrative description, and should not be understood as limiting the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] The technical scheme of the present application will be further described in detail below through specific embodiments and in conjunction with the drawings:

[0038] Embodiment 1

[0039] Reference Figures 1 to 6 The present embodiment discloses a lubrication state monitoring device for a sliding bearing, comprising a bearing seat 1 for mounting the sliding bearing, a linkage assembly 2 and an alarm assembly 3, the bearing seat 1 has a mounting hole for mounting the sliding bearing, the alarm assembly 3 is installed on the bearing seat 1, one end of the linkage assembly 2 extends into the lubricating oil between the sliding bearing and the journal, when the journal drives the one end of the linkage assembly 2 to rotate, the other end of the linkage assembly 2 abuts against the alarm assembly 3 and triggers the alarm assembly 3.

[0040] In this embodiment, a linkage assembly 2 is movably connected to the bearing housing 1, and an alarm assembly 3 is attached to the bearing housing 1. Because one end of the linkage assembly 2 extends into the lubricating oil, when the lubricating oil is sufficient, the linkage assembly 2 does not directly contact the shaft journal and does not rotate. When the lubricating oil is insufficient, the linkage assembly 2 directly contacts the shaft journal, and friction from the shaft journal drives the linkage assembly 2 to rotate.

[0041] When the linkage component 2 rotates, the other end of the linkage component 2 will abut against the alarm component 3 and trigger the alarm component 3, so that the staff can promptly discover the problem of insufficient lubricating oil and perform maintenance and repairs, thereby reducing the problem of bearing or journal damage caused by insufficient lubricating oil and ensuring the normal operation of the equipment.

[0042] In this embodiment, the alarm assembly 3 includes a shell 31, an alarm body 32 and a movable block 33. The shell 31 is fixedly connected to the top of the bearing seat 1, the alarm body 32 is fixedly connected to the shell 31, and the movable block 33 is movably connected to the shell 31 and is located at the bottom of the alarm body 32. The upper end of the movable block 33 has a conductive part 331 for connecting to the alarm body 32, and the lower end of the movable block 33 has a slope 332 for abutting against the linkage assembly 2.

[0043] Specifically, the shell 31 is a component for installing the alarm body 32 and the movable block 33. The shell 31 and the bearing seat 1 can be fixedly connected by bolts or welded. The alarm body 32 and the shell 31 can be connected by bolts or welded. The alarm body 32 is installed on the upper side of the shell 31, and the movable block 33 is installed on the lower side of the alarm body 32. When the movable block 33 moves upward under the push of the linkage assembly 2, it can push the movable block 33 to move upward. The alarm body 32 has a disconnected first contact and a second contact. When the conductive part 331 is connected to the first contact and the second contact respectively, the alarm body 32 can be turned on, thereby triggering an alarm. It can be seen that the upward movement of the movable block can connect the circuit of the conductive part 331 with the alarm body 32, so that the alarm body 32 sends an alarm signal.

[0044] The alarm body 32 can be a buzzer, a signal light or other existing alarm modules. The alarm body 32 can also be electrically connected to a communication module or a host computer. When the alarm body 32 is triggered, an alarm signal is sent through the communication module or the host computer to remind relevant personnel.

[0045] refer to Figures 2 to 4The inclined surface 332 slopes downward, along the rotational direction of the linkage assembly 2. For example, when the journal rotates counterclockwise, the linkage assembly 2 is positioned above the journal, and the inclined surface 332 of the movable block 33 slopes downward from right to left. As the linkage assembly 2 rotates with the journal, its leftward movement pushes the movable block 33 upward.

[0046] Of course, in other embodiments, if the journal rotates in a clockwise direction, the inclined surface 332 of the movable block 33 may be configured to be inclined downward from left to right.

[0047] In this embodiment, since the linkage component 2 abuts against the inclined surface 332 at the lower end of the movable block 33, when the linkage component 2 rotates, it can push the movable block 33 to move upward by abutting against the inclined surface 332, so that the conductive part 331 at the upper end of the movable block 33 is connected to the alarm, thereby causing the alarm component 3 to emit an alarm signal.

[0048] In other embodiments, the inclined surface 332 at the bottom of the movable block 33 may also be configured to be approximately inverted V-shaped. When the lubricant is in a normal state, the top of the linkage assembly 2 is located in the middle of the inverted V-shape. When the lubricant is insufficient and the linkage assembly 2 rotates, the linkage assembly 2 can push the movable block 33 upward regardless of whether the linkage assembly 2 rotates clockwise or counterclockwise.

[0049] refer to Figure 3 and Figure 5 The linkage assembly 2 includes a push rod 21 and a 匚-shaped plate 22. The push rod 21 is fixedly connected to the top of the 匚-shaped plate 22. A circular arc-shaped sliding groove 11 extending along the circumferential direction is provided on the upper side of the bearing seat 1. The upper end of the 匚-shaped plate 22 is slidably connected to the circular arc-shaped sliding groove 11. The lower end of the 匚-shaped plate 22 extends into the lubricating oil between the sliding bearing and the shaft neck. The upper end of the push rod 21 abuts against the lower end of the movable block 33.

[0050] Specifically, the 匚-shaped plate 22 includes a first plate, a second plate, and a third plate connected sequentially from top to bottom. The first and third plates extend horizontally, while the second plate extends vertically, forming a substantially 匚-shaped connection. The first plate extends into the arc-shaped sliding groove 11, thereby slidingly connecting with the bearing seat 1. The top rod 21 is fixed to the top of the first plate and can rotate with the 匚-shaped plate 22. The third plate extends into the lubricating oil between the journal and the sliding bearing.

[0051] The first plate has a generally arcuate cross-sectional profile, aligned with the arc of the arcuate sliding groove 11. The third plate also has a generally arcuate cross-sectional profile, aligning with the shape of the lubricating oil gap between the sliding bearing and the journal. It will be appreciated that the thickness of the third plate is significantly less than the normal oil film thickness of the lubricating oil, and therefore does not affect the normal lubrication between the sliding bearing and the journal.

[0052] In the embodiment, the upper end of the 匚-shaped plate 22 is slidably connected to the bearing seat 1 through the arc-shaped sliding groove 11, and the lower end of the 匚-shaped plate 22 extends into the lubricating oil and abuts against the movable block 33 through the push rod 21, making the structure of the linkage assembly 2 more compact.

[0053] In some embodiments, the push rod 21 may be located on the outer side of the bearing seat 1 , while in this embodiment, the push rod 21 is disposed inside the bearing seat 1 , making the structure more compact.

[0054] More specifically, a lubricating oil chamber 12 is defined within the upper end of bearing housing 1. Arc-shaped sliding groove 11 communicates with lubricating oil chamber 12. The upper end of 匚-shaped plate 22 extends through arc-shaped sliding groove 11 and into lubricating oil chamber 12. An opening is defined at the top of lubricating oil chamber 12, communicating with the interior of housing 31. Push rod 21 is positioned within lubricating oil chamber 12 and extends through the opening to abut against the lower end of movable block 33. By positioning the upper end of 匚-shaped plate 22 and push rod 21 within lubricating oil chamber 12, the overall structure becomes more compact.

[0055] In this embodiment, the interior of the shell 31 is vertically provided with a first cavity 311 and a second cavity 312, the alarm body 32 is installed in the first cavity 311, a sliding channel 313 is provided between the first cavity 311 and the second cavity 312, the movable block 33 is slidably connected in the sliding channel 313, the upper end of the movable block 33 is located in the first cavity 311, and the lower end of the movable block 33 is located in the second cavity 312.

[0056] Specifically, the sliding channel 313 is shaped to match the middle portion of the movable block 33. For example, if the middle portion of the movable block 33 has a rectangular cross-section, the sliding channel 313 also has a rectangular cross-section, allowing the movable block 33 to slide up and down along the sliding channel 313. Dividing the interior of the housing 31 into a first cavity 311 and a second cavity 312 separates the lubricant reservoir from the alarm body 32, preventing the lubricant from affecting the normal operation of the alarm assembly 3.

[0057] In this embodiment, the upper end of the movable block 33 further has a limiting portion 333, and the size of the limiting portion 333 is larger than the size of the sliding channel 313. The limiting portion 333 can limit the movable block 33 to prevent the movable block 33 from falling off from the sliding channel 313.

[0058] In this embodiment, the lubricating oil chamber 12 contains lubricating oil, a lubricating oil flow channel 221 is opened inside the 匚-shaped plate 22, the upper end of the 匚-shaped plate 22 has a lubricating oil inlet 222, and the lower end of the 匚-shaped plate 22 has a lubricating oil outlet 223, and the lubricating oil inlet 222 and the lubricating oil outlet 223 are respectively connected to the lubricating oil flow channel 221.

[0059] In this embodiment, lubricating oil in the lubricating oil chamber 12 can enter through the lubricating oil inlet 222, then flow through the lubricating oil flow channel 221 and out of the lubricating oil outlet 223, thereby replenishing the lubricating oil between the sliding bearing and the journal. Furthermore, the second chamber 312 can also be used to accommodate more lubricating oil, which can enter the lubricating oil chamber 12 through the opening at the bottom of the second chamber 312.

[0060] Example 2

[0061] refer to Figure 2 and Figure 3 This embodiment is similar to Embodiment 1, except that in this embodiment, a blocking member 13 is fixedly connected to the lubricating oil chamber 12. When the linkage assembly 2 is not deflected, the blocking member 13 completely blocks the lubricating oil inlet 222. When the linkage assembly 2 is deflected, the lubricating oil inlet 222 is at least partially connected to the lubricating oil chamber 12. The size of the blocking member 13 can be equal to or slightly larger than the size of the lubricating oil inlet 222. In this way, when the linkage assembly 2 is not deflected, the blocking member can completely block the lubricating oil inlet 222. When the linkage assembly 2 is deflected, at least part of the lubricating oil inlet 222 is not blocked by the blocking member 13.

[0062] When there's sufficient lubricating oil between the sliding bearing and the journal, the linkage assembly 2 doesn't deflect, allowing the sealing member 13 to block the lubricating oil inlet 222 and prevent the lubricating oil from flowing out of the lubricating oil chamber 12. When there's a lack of lubricating oil between the sliding bearing and the journal, the linkage assembly 2 deflects, allowing the lubricating oil inlet 222 to at least partially communicate with the lubricating oil chamber 12, allowing the lubricating oil in the lubricating oil chamber 12 to flow between the sliding bearing and the journal for replenishment. This prevents lubricating oil from flowing out without requiring additional lubricating oil.

[0063] Example 3

[0064] refer to Figure 3 and Figure 5 This embodiment is similar to embodiment 1, except that sealing members 23 are fixedly connected to both sides of the upper end of the 匚-shaped plate 22, and the sealing members 23 abut against the arc-shaped sliding groove 11 and are used to seal the arc-shaped sliding groove 11.

[0065] Because the ⌚-shaped plate 22 needs to be able to slide along the arc-shaped extension direction in the arc-shaped sliding groove 11, the length of the arc-shaped sliding groove 11 is greater than the cross-sectional length of the ⌚-shaped plate 22. When the upper end of the ⌚-shaped plate 22 is slidably connected in the arc-shaped sliding groove 11, only a portion of the cross-section of the arc-shaped sliding groove 11 is blocked by the ⌚-shaped plate 22, and the remaining portion needs to be blocked by the seal 23 to prevent lubricating oil leakage.

[0066] The sealing member 23 at least comprises an end face covering the extending direction of the circular-arc sliding groove 11, which functions to block the part of the circular-arc sliding groove 11 not in contact with the Z-shaped plate 22. When the Z-shaped plate 22 is located at the end part of the circular-arc sliding groove 11, the sealing member 23 on the other side of the Z-shaped plate 22 can completely cover the exposed part of the circular-arc sliding groove 11, and the sealing member 23 on both sides of the Z-shaped plate 22 is set in this way. By setting the sealing member 23, no matter the Z-shaped plate 22 rotates to any position, the sealing member 23 can seal the circular-arc sliding groove 11 to avoid leakage of lubricating oil.

[0067] In the embodiment, the Z-shaped plate 22 is further provided with elastic connecting members (not shown in the figure) on both sides, one end of the elastic connecting member is fixedly connected with the Z-shaped plate 22, and the other end of the elastic connecting member is fixedly connected with the inner side wall of the lubricating oil cavity 12.

[0068] Specifically, the elastic connecting member can be a spring, and both ends of the spring are connected with the Z-shaped plate 22 and the inner side wall of the lubricating oil cavity 12 respectively. After supplementing the lubricating oil between the sliding bearing and the shaft neck, the lower end of the Z-shaped plate 22 is in frictional contact with the shaft neck, and the Z-shaped plate 22 can be restored to the original position under the action of the elastic connecting member.

[0069] Obviously, the above embodiment of the present application is only an example for clearly illustrating the present application, and is not a limitation on the embodiments of the present application. For those skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A lubrication condition monitoring device for a sliding bearing, characterized in that: It includes a bearing housing (1), a linkage component (2) and an alarm component (3). The bearing housing (1) has a mounting hole for mounting a sliding bearing. The alarm component (3) is mounted on the bearing housing (1). One end of the linkage component (2) extends into the lubricating oil between the sliding bearing and the journal. When the journal drives one end of the linkage component (2) to rotate, the other end of the linkage component (2) abuts against the alarm component (3) and triggers the alarm component (3).

2. The lubrication condition monitoring device for a sliding bearing according to claim 1, characterized in that: The alarm component (3) includes a housing (31), an alarm body (32) and a movable block (33). The housing (31) is fixedly connected to the top of the bearing housing (1). The alarm body (32) is fixedly connected to the housing (31). The movable block (33) is movably connected to the housing (31) and is located at the bottom of the alarm body (32). The upper end of the movable block (33) has a conductive part (331) for connecting the alarm body (32). The lower end of the movable block (33) has an inclined surface (332) for abutting against the linkage component (2).

3. The lubrication condition monitoring device for sliding bearings according to claim 2, characterized in that: The linkage component (2) includes a push rod (21) and a C-shaped plate (22). The lower end of the push rod (21) is fixedly connected to the top of the C-shaped plate (22). An arc-shaped sliding groove (11) extending in the circumferential direction is formed in the upper side of the bearing housing (1). The upper end of the C-shaped plate (22) is slidably connected to the arc-shaped sliding groove (11). The lower end of the C-shaped plate (22) extends into the lubricating oil between the sliding bearing and the journal. The upper end of the push rod (21) abuts against the lower end of the movable block (33).

4. The lubrication condition monitoring device for a sliding bearing according to claim 3, characterized in that: A lubricating oil cavity (12) is formed inside the upper end of the bearing housing (1). The arc-shaped sliding groove (11) is connected to the lubricating oil cavity (12). The upper end of the C-shaped plate (22) passes through the arc-shaped sliding groove (11) and extends into the lubricating oil cavity (12). An opening communicating with the inside of the housing (31) is provided at the top of the lubricating oil cavity (12). The push rod (21) is placed in the lubricating oil cavity (12) and passes through the opening to abut against the lower end of the movable block (33).

5. The lubrication condition monitoring device for sliding bearings according to claim 2, characterized in that: A first cavity (311) and a second cavity (312) are sequentially arranged vertically inside the housing (31). The alarm body (32) is mounted in the first cavity (311). A sliding channel (313) is provided between the first cavity (311) and the second cavity (312). The movable block (33) is slidably connected to the sliding channel (313). The upper end of the movable block (33) is located in the first cavity (311). The lower end of the movable block (33) is located in the second cavity (312).

6. The lubrication condition monitoring device for sliding bearings according to claim 5, characterized in that: The upper end of the movable block (33) also has a limiting part (333). The size of the limiting part (333) is larger than the size of the sliding channel (313).

7. The lubrication condition monitoring device for a sliding bearing according to claim 4, characterized in that: The lubricating oil cavity (12) contains lubricating oil. A lubricating oil flow channel (221) is formed inside the U-shaped plate (22). The upper end of the U-shaped plate (22) has a lubricating oil inlet (222), and the lower end of the U-shaped plate (22) has a lubricating oil outlet (223). Both the lubricating oil inlet (222) and the lubricating oil outlet (223) are respectively connected to the lubricating oil flow channel (221).

8. The lubrication condition monitoring device for a sliding bearing according to claim 7, characterized in that: A blocking member (13) is fixedly connected in the lubricating oil cavity (12). When the linkage component (2) is not deflected, the blocking member (13) blocks the lubricating oil inlet (222). When the linkage component (2) is deflected, at least part of the lubricating oil inlet (222) is connected to the lubricating oil cavity (12).

9. The lubrication condition monitoring device for a sliding bearing according to claim 7, characterized in that: Sealing members (23) are fixedly connected to both sides of the upper end of the U-shaped plate (22). The sealing members (23) abut against the arc-shaped sliding groove (11) and are used to seal the arc-shaped sliding groove (11).

10. The lubrication condition monitoring device for a sliding bearing according to claim 7, characterized in that: Elastic connecting members are further provided on both sides of the U-shaped plate (22). One end of the elastic connecting member is fixedly connected to the U-shaped plate (22), and the other end of the elastic connecting member is fixedly connected to the inner side wall of the lubricating oil cavity (12).

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