Self-lubricating precision bearing assembly under heavy equipment high load working condition

Abstract

The utility model provides self -lubricating precision bearing assembly under heavy equipment high load working condition belongs to bearing technical field, including bearing seat, bearing mechanism and monitoring feedback mechanism, bearing mechanism includes outer ring, inner race and ball, monitoring feedback mechanism includes oil storage tank, oil pipe, probe and warning device, has been set up in outer ring and flows the chamber with fluting, and the one end of oil pipe is connected oil storage tank, and other end communicates with flow chamber, and the probe is inserted into fluting inside via the through -hole on the outer ring, and the probe is electrically connected in warning device. The utility model constructs the inside oil circuit through the chamber and fluting on the outer ring, has realized the sustained automatic supply of lubricating oil to ball and friction interface, and directly monitors the actual state of oil in oil circuit through the probe, can drive warning device to send the alarm immediately in the lubricating oil is exhausted.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to self-lubricating precision bearing assemblies for heavy equipment under high load conditions. Background Technology

[0002] Bearings are key rotating components in heavy equipment. When heavy equipment operates under high load conditions, bearings need to withstand huge radial and axial forces, which leads to severe friction and high temperature between the rolling elements and raceways of the bearing.

[0003] To ensure the normal operation of bearings and extend their service life, continuous and effective lubrication is essential. Existing lubrication methods typically rely on regular manual oiling or external oil reservoirs. However, precision bearings have more stringent requirements for lubrication conditions. Continuous operation under high load conditions will accelerate the consumption of lubricating oil. Once the lubricating oil supply is insufficient or interrupted, the precision bearing will wear rapidly, leading to a decrease in equipment accuracy, or even causing the bearing to seize or burn out.

[0004] Existing self-lubricating structures, even those equipped with oil reservoirs, generally lack the ability to monitor the lubrication status of the bearing's internal oil circuit in real time. Operators cannot know whether the bearing is truly receiving effective lubrication. When the oil reservoir is low on oil or the internal oil circuit is blocked, the lubrication failure cannot be detected in time, which poses a huge safety hazard to precision bearings operating under high loads.

[0005] Therefore, this utility model proposes a self-lubricating precision bearing assembly for heavy equipment under high load conditions to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of self-lubricating precision bearing assemblies for heavy equipment under high load conditions, such as the inability to monitor the lubrication status inside the bearing in real time and the failure to detect lubrication failure in time, which leads to damage to precision bearings due to dry friction, this utility model aims to provide a self-lubricating precision bearing assembly for heavy equipment under high load conditions with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a self-lubricating precision bearing assembly for heavy equipment under high load conditions, including: a bearing housing, and a bearing mechanism disposed in the bearing housing. The bearing mechanism includes an outer ring, an inner ring and balls, and a monitoring and feedback mechanism, which includes an oil reservoir, an oil pipe, a probe and an alarm.

[0008] The outer ring has a through groove and a flow cavity, and also has a through hole.

[0009] Furthermore, the oil storage tank is installed on the outside of the bearing housing, one end of the oil pipe is connected to the oil storage tank, the other end of the oil pipe is connected to the flow cavity, the probe extends into the through groove through the through hole, the probe is electrically connected to the warning device, and the warning device is installed on the upper part of the bearing housing.

[0010] Preferably, the bottom of the bearing housing is provided with mounting holes.

[0011] Preferably, the inner wall of the outer ring has a retaining groove, the outer wall of the inner ring has a rolling groove, and the ball is accommodated between the retaining groove and the rolling groove.

[0012] Preferably, the bearing mechanism further includes a connecting ring, which is disposed around the outer periphery of the inner ring and abuts against the end face of the outer ring.

[0013] Preferably, the top of the oil storage tank is provided with an oil filling hole.

[0014] Preferably, the flow cavity is disposed around the inner wall of the outer ring, and the through groove extends radially from the flow cavity.

[0015] Preferably, the probe is a contact level probe, and the warning device includes a light-emitting unit and a buzzer unit.

[0016] Preferably, both the retaining groove and the rolling groove have a semi-circular groove shape.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that the actual state of the internal lubrication oil circuit of the bearing cannot be monitored in real time, which leads to the failure of lubrication failure to be detected in time, by setting a monitoring feedback mechanism and inserting a probe into the through groove inside the outer ring through a through hole. It can immediately issue an alarm when the lubricating oil is exhausted or the oil circuit is blocked, prevent precision bearings from being damaged by dry friction, and improve operational safety and reliability.

[0018] 2. This utility model constructs an internal lubrication oil circuit by opening a flow cavity and a through groove on the outer ring that communicates with the oil storage tank. This solves the problem of insufficient lubrication under high load caused by the simple lubrication structure and inaccurate lubrication oil supply in the prior art. It can accurately and continuously guide the lubricating oil to the ball and friction interface, realize efficient and stable automatic lubrication, and extend the service life of precision bearings. Attached Figure Description

[0019] Figure 1 This is a perspective view of the self-lubricating precision bearing assembly for heavy equipment under high load conditions proposed in this utility model. Figure 2 This is an exploded view of the self-lubricating precision bearing assembly for heavy equipment under high load conditions proposed in this utility model. Figure 3 This is a partial cross-sectional view of the inner ring of the self-lubricating precision bearing assembly for heavy equipment under high load conditions proposed in this utility model. Figure 4 This is a partial cross-sectional view of the outer ring of the self-lubricating precision bearing assembly for heavy equipment under high load conditions proposed in this utility model.

[0020] Legend: 1. Bearing housing; 2. Mounting hole; 3. Bearing mechanism; 301. Outer ring; 302. Retaining groove; 303. Ball; 304. Inner ring; 305. Rolling groove; 306. Through groove; 307. Connecting ring; 308. Flow chamber; 4. Monitoring and feedback mechanism; 401. Alarm device; 402. Through hole; 403. Probe; 404. Oil reservoir; 405. Oil filling hole; 406. Oil pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Example: Please refer to Figures 1 to 4 This utility model provides a self-lubricating precision bearing assembly for heavy equipment under high load conditions, including a bearing housing 1 and a bearing mechanism 3 disposed in the bearing housing 1, and a monitoring feedback mechanism 4. The bearing housing 1 is used as the mounting base and housing of the entire device, the bearing mechanism 3 is used to bear the load and realize rotational movement, and the monitoring feedback mechanism 4 is used to realize automatic lubrication and monitor the status of the lubricating oil in real time. The bottom of the bearing housing 1 is provided with a mounting hole 2, which is used to fix the bearing housing 1 on the heavy equipment.

[0023] Please refer to Figure 2 , Figure 3 and Figure 4The bearing mechanism 3 includes an outer ring 301, an inner ring 304, and balls 303. The outer ring 301 is fixedly installed in the inner cavity of the bearing housing 1. The inner ring 304 is coaxially disposed inside the outer ring 301. The balls 303 roll between the outer ring 301 and the inner ring 304. The inner wall of the outer ring 301 is provided with a retaining groove 302, and the outer wall of the inner ring 304 is provided with a rolling groove 305. The balls 303 are accommodated between the retaining groove 302 and the rolling groove 305. The cross-sectional shape of the retaining groove 302 and the rolling groove 305 is a semi-circular groove. The bearing mechanism 3 also includes a connecting ring 307, which is arranged around the outer periphery of the inner ring 304 and abuts against the end face of the outer ring 301.

[0024] like Figure 1 , Figure 3 and Figure 4 As shown, the monitoring feedback mechanism 4 includes an oil storage tank 404, an oil pipe 406, a probe 403, and an alarm 401. The oil storage tank 404 is installed on the outside of the bearing housing 1. The top of the oil storage tank 404 is provided with an oil filling hole 405 for adding lubricating oil into the oil storage tank 404. The alarm 401 is installed on the upper part of the bearing housing 1 and includes a light-emitting unit and / or a buzzer unit. The probe 403 is a contact-type liquid level probe 403, which is electrically connected to the alarm 401. To cooperate with the operation of the monitoring feedback mechanism 4, the outer ring 301 is also provided with a through hole 402, a flow cavity 308, and a through groove 306. The flow cavity 308 is arranged around the inner wall of the outer ring 301, and the through groove 306 extends radially from the flow cavity 308.

[0025] Please refer to Figure 3 and Figure 4During the operation of the self-lubricating precision bearing assembly under high load conditions of heavy equipment, lubricating oil is injected into the oil reservoir 404 through the oil filling hole 405. The oil reservoir 404 is installed on the outside of the bearing housing 1 for easy filling and maintenance. The oil reservoir 404 is connected to the internal oil passage of the bearing mechanism 3 through the oil pipe 406. One end of the oil pipe 406 is connected to the oil reservoir 404, and the other end of the oil pipe 406 is connected to the flow cavity 308 opened on the outer ring 301. The flow cavity 308 is arranged around the inner wall of the outer ring 301. The through groove 306 extends radially from the flow cavity 308 and opens in the area near the ball 303. This structure allows the lubricating oil to flow out from the oil reservoir 404, enter the flow cavity 308 through the oil pipe 406, and be evenly distributed in the flow cavity 308. Subsequently, the lubricating oil is precisely guided through the through groove 306 to the friction interface between the ball 303, the retaining groove 302, and the rolling groove 305. To achieve continuous automatic lubrication of the bearing mechanism 3 and to enable real-time monitoring of the lubrication status, the probe 403 of the monitoring feedback mechanism 4 is electrically connected to the alarm 401. The alarm 401 is installed in a conspicuous position on the upper part of the bearing housing 1. A through hole 402 is provided on the outer ring 301, and the position of the through hole 402 corresponds to the through groove 306. The probe 403, as a contact-type liquid level probe 403, passes through the through hole 402 and extends into the interior of the through groove 306. This structure, in which the probe 403 is directly inserted into the internal oil passage through groove 306, allows the probe 403 to monitor the oil status inside the through groove 306 in real time. When the oil tank 404 is short of oil or the oil passage is blocked, causing the oil level in the through groove 306 to be too low, the probe 403 immediately detects the abnormality and triggers the alarm 401 to work. The alarm 401 issues an alarm through the light-emitting unit and the buzzer unit, thereby realizing early warning of lubrication failure.

[0026] As a preferred embodiment, in order to facilitate the secure installation of the entire assembly on the equipment, the bottom of the bearing housing 1 is provided with a mounting hole 2.

[0027] In another preferred embodiment, in order to precisely constrain the rolling path of the ball 303, the inner wall of the outer ring 301 is provided with a retaining groove 302, and the outer wall of the inner ring 304 is provided with a rolling groove 305. The ball 303 is accommodated in the annular space formed between the retaining groove 302 and the rolling groove 305. More preferably, in order to optimize the contact stress distribution and rolling smoothness of the ball 303, the cross-sectional shape of the retaining groove 302 and the rolling groove 305 is a semi-circular groove.

[0028] In another preferred embodiment, in order to provide a sealing or axial positioning function, the bearing mechanism 3 further includes a connecting ring 307, which is arranged around the outer periphery of the inner ring 304 and abuts against the end face of the outer ring 301.

[0029] As another preferred embodiment, in order to facilitate the addition of lubricating oil to the oil storage tank 404, the top of the oil storage tank 404 is provided with an oil filling hole 405.

[0030] As another preferred embodiment, in order to ensure that the lubricating oil can be evenly distributed and accurately delivered to the friction area, the flow cavity 308 is provided around the inner wall of the outer ring 301, and the through groove 306 extends radially from the flow cavity 308, so that the oil can first form a stable oil pressure in the annular flow cavity 308, and then flow to the ball 303 through the radial through groove 306.

[0031] As another preferred embodiment, in order to improve the reliability of monitoring and the effectiveness of warning, the probe 403 is preferably a contact level probe 403, and the warning device 401 preferably includes a light-emitting unit and a buzzer unit.

[0032] Working principle: Before the equipment is put into operation, the operator adds lubricating oil into the oil storage tank 404 through the oil filling hole 405 installed on the top of the oil storage tank 404. The oil storage tank 404 is installed on the outside of the bearing seat 1, providing a continuous oil source reserve for the entire self-lubricating system. When the self-lubricating precision bearing assembly under high load conditions of heavy equipment starts to operate, the inner ring 304 and the outer ring 301 in the bearing mechanism 3 rotate relative to each other. The balls 303 roll at high speed in the annular track defined by the rolling groove 305 on the outer wall of the inner ring 304 and the retaining groove 302 on the inner wall of the outer ring 301. At this time, the lubricating oil in the oil tank 404 enters the oil pipe 406 through one end under the action of gravity or system pressure, and is transported from the other end of the oil pipe 406 to the flow cavity opened on the outer ring 301. In 308, the flow cavity 308 is arranged around the inner wall of the outer ring 301, so that the lubricating oil can be buffered and evenly distributed in the flow cavity 308. The lubricating oil is then precisely and continuously supplied to the friction interface between the ball 303, the retaining groove 302 and the rolling groove 305 through the through groove 306 extending radially from the flow cavity 308, forming a stable oil film, thereby effectively dealing with the high wear and high heat generation problems under high load conditions. The connecting ring 307 is attached to the end face of the outer ring 301, which plays a role in sealing and auxiliary positioning of the internal structure. During the flow of lubricating oil through the through-groove 306, the probe 403, installed in the through hole 402 of the outer ring 301, extends into the through-groove 306. As a contact-type liquid level probe, the probe 403 monitors the oil level in this critical oil passage node, the through-groove 306, in real time. Under normal operating conditions, the through-groove 306 is full of lubricating oil, the probe 403 detects a normal oil level, and the warning device 401 installed on the upper part of the bearing housing 1 remains silent. However, when the lubricating oil in the oil reservoir 404 is depleted due to consumption, or when the oil pipe 406 becomes blocked... When the lubricating oil supply is interrupted, the lubricating oil level in the channel 306 will drop rapidly. The probe 403 will immediately detect the abnormal state where the oil level is lower than the preset safety value. Since the probe 403 is electrically connected to the alarm 401, the probe 403 will send the abnormal signal to the alarm 401, driving the light-emitting unit and / or buzzer unit of the alarm 401 to emit an alarm signal. The operator can observe the alarm through the bearing seat 1 that is fixed firmly in the mounting hole 2, and can intervene in time to add oil or repair before the precision bearing suffers dry friction and damage.

Claims

1. Self-lubricating precision bearing assemblies for heavy equipment under high load conditions, including: The bearing housing (1) and the bearing mechanism (3) are disposed in the bearing housing (1). The bearing mechanism (3) includes an outer ring (301), an inner ring (304) and balls (303) that roll between the outer ring (301) and the inner ring (304). The bearing assembly is characterized in that it further includes a monitoring feedback mechanism (4), which includes an oil tank (404), an oil pipe (406), a probe (403), and an alarm (401). The oil tank (404) is installed on the outside of the bearing seat (1). One end of the oil pipe (406) is connected to the oil tank (404). The outer ring (301) is provided with a through groove (306) and a flow cavity (308) connected to the through groove (306). The other end of the oil pipe (406) is connected to the flow cavity (308) to introduce the lubricating oil in the oil tank (404) into the through groove (306) and the flow cavity (308). The outer ring (301) is also provided with a through hole (402). The probe (403) extends into the through groove (306) through the through hole (402) to monitor the oil state in the through groove (306).

2. The self-lubricating precision bearing assembly for heavy equipment under high load conditions according to claim 1, characterized in that, The probe (403) is electrically connected to the warning device (401) mounted on the upper part of the bearing housing (1).

3. The self-lubricating precision bearing assembly for heavy equipment under high load conditions according to claim 1, characterized in that, The bearing housing (1) has a mounting hole (2) at its bottom, which is used to fix the bearing housing (1) in place.

4. The self-lubricating precision bearing assembly for heavy equipment under high load conditions according to claim 1, characterized in that, The inner wall of the outer ring (301) is provided with a retaining groove (302), and the outer wall of the inner ring (304) is provided with a rolling groove (305). The ball (303) is accommodated between the retaining groove (302) and the rolling groove (305).

5. The self-lubricating precision bearing assembly for heavy equipment under high load conditions according to claim 1, characterized in that, The bearing mechanism (3) further includes a connecting ring (307), which is disposed around the outer periphery of the inner ring (304) and abuts against the end face of the outer ring (301).

6. The self-lubricating precision bearing assembly for heavy equipment under high load conditions according to claim 1, characterized in that, The top of the oil storage tank (404) is provided with an oil filling hole (405), which is used to add lubricating oil into the oil storage tank (404).

7. The self-lubricating precision bearing assembly for heavy equipment under high load conditions according to claim 1, characterized in that, The flow cavity (308) is disposed around the inner wall of the outer ring (301), and the through groove (306) extends radially from the flow cavity (308).

8. The self-lubricating precision bearing assembly for heavy equipment under high load conditions according to claim 1, characterized in that, The probe (403) is a contact liquid level probe (403), and the warning device (401) includes a light-emitting unit and a buzzer unit.

9. The self-lubricating precision bearing assembly for heavy equipment under high load conditions according to claim 4, characterized in that, The cross-sectional shape of both the retaining groove (302) and the rolling groove (305) is a semi-circular groove.

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