Mechanical pump bearing lubricating structure
Forced lubrication is achieved in the mechanical pump bearing through the combined structure of the nozzle and the oil injection ring, which solves the problem of poor lubrication effect in the prior art, and improves the lubrication effect and oil cleanliness.
Patent Information
- Application Number
- CN202420936929.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The lubrication method of bearings in existing mechanical pump components has disadvantages, including the opening random drops of oil or throwing oil with low accommodating capacity for fine abrasive particles, and the splash lubricating oil has poor cleanliness, which affects the lubrication effect.
Using a combined structure of nozzle and oil injection ring, the oil passage is formed to supply oil directly to the bearing, replacing the traditional splash lubrication and open-hole random oil dropping method, sending oil to the oil injection ring through the nozzle for lubrication, and a protective structure is set up in the oil passage and oil return holes for improved lubrication and cleanliness.
Forced lubrication of bearings is achieved, the lubrication effect is improved, the cleanliness of oil is enhanced, the impact of oil return is avoided, and the lubrication effect is improved.
Smart Images
Figure CN222141509U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical pump bearing lubrication, in particular to a mechanical pump bearing lubrication structure. Background Art
[0002] A mechanical pump assembly is an assembly that transmits rotation for a mechanical pump, and is generally an axis system including two bearings and a support box. The existing bearing lubrication methods in mechanical pump assemblies include random oil splashing or oil dripping through holes and oil lubrication by splashing oil with a large wheel, and both lubrication methods have disadvantages. For example, random oil dripping or oil splashing through holes has a slightly lower capacity for fine abrasive particles for bearings due to the small size of the bearing rolling elements, small gear side clearance and bearing clearance, which affects the lubrication effect. The oil splashed by the gear is usually in the middle and lower part of the oil pool, and comes from the return oil after lubrication of other large gears and bearings. It has poor cleanliness and is easy to affect the lubrication effect.
[0003] In view of this, we propose a mechanical pump bearing lubrication structure to solve the above problems. Utility Model Content
[0004] The main purpose of the utility model is to provide a mechanical pump bearing lubrication structure, aiming to achieve the effect of forced lubrication of the bearing.
[0005] In order to achieve the above-mentioned purpose, the mechanical pump bearing lubrication structure proposed by the utility model comprises:
[0006] Support box;
[0007] A drive shaft is rotatably mounted inside the support box, and two bearings are provided on the outer side of the drive shaft; and,
[0008] The lubrication structure includes at least one nozzle and at least one oil spray ring. The oil spray ring is sleeved on the drive shaft and is located between the two bearings. An oil channel is formed in the oil spray ring. The oil inlet of the oil channel is opened on the peripheral side of the oil spray ring and is connected to the nozzle. The oil outlet of the oil channel is opened at both ends of the oil spray ring in the axial direction to spray oil toward the side ends of the two bearings.
[0009] In one embodiment, the two bearings include a first bearing and a second bearing, and a gear is further provided on the drive shaft, and the gear is located on a side of the first bearing away from the second bearing;
[0010] The oil spray ring is disposed adjacent to the first bearing.
[0011] In one embodiment, the mechanical pump bearing lubrication structure further includes a protective structure, and the protective structure is arranged in the oil injection ring.
[0012] In one embodiment, the protective structure includes a buffer portion and a protective portion connected to the buffer portion;
[0013] The buffer part is arranged on both sides of the protective part, and the protective part and the oil injection ring are elastically connected through the buffer part.
[0014] In one embodiment, the protection portion includes a rod portion and a cleaning portion;
[0015] The rod part is an insert rod, and the cleaning part is bristles;
[0016] One end of the insertion rod penetrates into the oil outlet of the oil channel, the bristles are arranged around the axial direction of the rod, and the other end of the insertion rod is located outside the oil injection ring and is fixedly installed with a baffle to prevent oil from flowing out of the oil outlet of the oil channel.
[0017] In one embodiment, the buffer portion includes a buffer spring and a receiving cavity for receiving the buffer spring;
[0018] The accommodating cavity is opened at both ends of the oil injection ring in the axial direction and is arranged on both sides of the oil outlet diameter direction of the oil channel. The two ends of the buffer spring are respectively fixed to the inner wall of the accommodating cavity and the side of the baffle toward the buffer spring.
[0019] In one embodiment, the mechanical pump bearing lubrication structure further includes at least one oil return hole, and the at least one oil return hole is penetrated through the bottom of the supporting box.
[0020] In one embodiment, the mechanical pump bearing lubrication structure further includes a gear housing, and the support housing is located and fixed inside the gear housing.
[0021] In one embodiment, the mechanical pump bearing lubrication structure further includes an oil distributor valve;
[0022] The oil circuit distributor valve is arranged inside the gear box body, and the oil circuit distributor valve is connected to at least one oil pipe branch, the oil pipe branch is fixed to the nozzle, and the at least one oil pipe branch passes through the inside of the support box body to supply oil to the nozzle.
[0023] In one embodiment, the at least one oil pipe branch is configured as a hose.
[0024] The technical solution of the utility model adopts the arrangement of the nozzle and the oil spray ring, and forms an oil channel in the oil spray ring, so that oil can be directly supplied to the oil channel to force lubrication of the bearing, replacing the traditional splash lubrication and the random oil dripping or oil throwing lubrication method of the opening, thereby improving the lubrication effect. At the same time, the oil is supplied to the oil spray ring for lubrication through the nozzle, which ensures the cleanliness of the oil, does not use the return oil after lubrication of other large gears and bearings, and enhances the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0026] Figure 1 A schematic diagram of a mechanical pump bearing lubrication structure provided by the utility model;
[0027] Figure 2 A partial cross-sectional schematic diagram of the fuel injection ring provided by the utility model;
[0028] Figure 3 A schematic diagram of the connection between the gear housing and the support housing provided by the utility model;
[0029] Figure 4 A schematic diagram of oil circuit system control of the oil circuit distributor valve provided by the utility model.
[0030] Description of Figure Numbers:
[0031] 100. Mechanical pump bearing lubrication structure; 1. Support housing; 2. Drive shaft; 3. Bearing; 31. First bearing; 32. Second bearing; 4. Lubrication structure; 41. Nozzle; 42. Oil injection ring; 421. Side surface of oil injection ring; 43. Oil channel; 431. Oil inlet; 432. Oil outlet; 5. Gear; 6. Protection structure; 61. Buffer part; 611. Buffer spring; 612. Accommodating chamber; 62. Protection part; 621. Rod; 6211. Insert rod; 622. Brushing part; 6221. Brush; 7. Oil return hole; 8. Gear housing; 9. Oil pipe branch.
[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0035] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their 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 addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0036] A mechanical pump assembly is an assembly that transmits rotation for a mechanical pump, and is generally an axis system including two bearings and a support box. The existing bearing lubrication methods in mechanical pump assemblies include random oil splashing or oil dripping through holes and oil lubrication by splashing oil with a large wheel, and both lubrication methods have disadvantages. For example, random oil dripping or oil splashing through holes has a slightly lower capacity for fine abrasive particles for bearings due to the small size of the bearing rolling elements, small gear side clearance and bearing clearance, which affects the lubrication effect. The oil splashed by the gear is usually in the middle and lower part of the oil pool, and comes from the return oil after lubrication of other large gears and bearings. It has poor cleanliness and is easy to affect the lubrication effect.
[0037] The utility model provides a mechanical pump bearing lubrication structure.
[0038] See also Figure 1-4In one embodiment of the utility model, the mechanical pump bearing lubrication structure 100 includes a support box body 1, a drive shaft 2 and a lubrication structure 4; the drive shaft 2 is rotatably mounted inside the support box body 1, and two bearings 3 are provided on the outer side of the drive shaft 2, wherein the inner ring of the bearing 3 is fixed to the outer side of the drive shaft 2; the lubrication structure 4 includes at least one nozzle 41 and at least one oil spray ring 42, the oil spray ring 42 is sleeved on the drive shaft 2 and is located between the two bearings 3, an oil channel 43 is formed in the oil spray ring 42, an oil inlet 431 of the oil channel is opened on the peripheral side surface of the oil spray ring 42 and is connected to the nozzle 41, and an oil outlet 432 of the oil channel is opened at both ends of the oil spray ring 42 in the axial direction to spray oil toward the side ends of the two bearings 3.
[0039] It should be supplemented that the oil inlet 431 of the oil passage is connected to the oil outlet 432 of the oil passage.
[0040] It should be noted that the mechanical pump bearing lubrication structure 100 is used in a wind power gearbox and in a wind farm.
[0041] It can be understood that in some embodiments, lubrication is performed by randomly throwing or dripping oil through openings. This lubrication method causes uncertainty in lubrication. Since the bearing rolling elements are small in size, the gear side clearance and the bearing clearance are small, and the tolerance for fine abrasive particles is slightly low, which affects the lubrication effect. In addition, the existing oil lubrication caused by the splashing of oil by the large wheel usually sinks in the middle and lower parts of the oil pool, resulting in poor oil cleanliness when the oil is returned, which affects the lubrication effect when it is used again. Therefore, in this embodiment, the technical solution of the utility model adopts the settings of the nozzle 41 and the oil injection ring 42, and an oil channel 43 is formed in the oil injection ring 42, so that oil can be directly supplied to the oil channel 43 to force lubrication of the bearing 3, replacing the traditional splash lubrication and the random oil dripping or throwing oil lubrication method through the openings, thereby improving the lubrication effect. At the same time, oil is sent to the oil injection ring 42 for lubrication through the nozzle 41, which ensures the cleanliness of the oil, and does not use the return oil after lubrication of other large gears and bearings, thereby enhancing the lubrication effect.
[0042] In addition, the two bearings 3 include a first bearing 31 and a second bearing 32, and a gear 5 is also provided on the drive shaft 2, and the gear 5 is located on the side of the first bearing 31 away from the second bearing 32; the oil spray ring 42 is arranged adjacent to the first bearing 31. In this embodiment, not only the bearing 3 is lubricated, but also the gear 5 is lubricated, solving the problem of traditional single pair of bearing lubrication, by arranging the position of the oil spray ring 42 near the bearing 3 and the gear 5, the oil outlets 432 of the oil passages arranged at both ends can not only lubricate the bearing 3 but also lubricate the gear 5 together, greatly improving the lubrication effect.
[0043] In addition, the mechanical pump bearing lubrication structure 100 further includes a protective structure 6, which is disposed in the oil injection ring 42. In the embodiment of the utility model, the protective structure 6 serves to protect the oil outlet 432 of the oil passage. When the oil outlet 432 of the oil passage is not in use, the protective structure 6 shields the oil outlet 432 of the oil passage. When in use, the protective structure 6 can be used to clean the oil outlet 432 of the oil passage to avoid residual oil inside the oil outlet 432 of the oil passage and block the oil discharge due to oil dirt, thereby improving the smoothness of the oil discharge.
[0044] Furthermore, the protective structure 6 includes a buffer portion 61 and a protective portion 62 connected to the buffer portion 61; the buffer portion 61 is arranged on both sides of the protective portion 62, and the protective portion 61 is elastically connected to the oil injection ring 42 through the buffer portion 61. In this embodiment, the arrangement of the buffer portion 61 and the protective portion 62 provides a good buffering and rebounding effect for the protective structure 6, which is beneficial to the oil outlet 432 of the oil channel to discharge oil or block, thereby improving the practicality of the protective structure 6.
[0045] Furthermore, the protective portion 62 includes a rod portion 621 and a cleaning portion 622; the rod portion 621 is an insert rod 6211, and the cleaning portion 622 is a brush 6221; one end of the insert rod 6211 penetrates into the oil outlet 432 of the oil channel, and the brush 6221 is arranged around the axial direction of the rod portion 621, and the other end of the insert rod 6211 is located outside the oil injection ring 42 and is fixedly installed with a baffle to prevent the oil from flowing out of the oil outlet 432 of the oil channel. It can be understood that, in some embodiments, the outer peripheral side of the rod portion 621 is set to a smooth surface, which does not have a brushing function, and thus cannot clean the interior of the oil outlet 432. Therefore, the bristles 6221 are provided in this embodiment, and the bristles 6221 are in contact with the inner wall of the oil outlet 432. When the insertion rod 6211 is driven to perform horizontal displacement activities, the bristles 6221 can be driven to brush the inner wall portion of the oil outlet 432, thereby removing oil stains and impurities attached to the inner wall of the oil outlet 432, which can have a sealing effect and a cleaning effect at the same time.
[0046] Furthermore, the buffer portion 61 includes a buffer spring 611 and a receiving cavity 612 for receiving the buffer spring 611; the receiving cavity 612 is opened at both ends of the oil injection ring 42 in the axial direction and arranged along both sides of the diameter direction of the oil outlet 432 of the oil channel, and the two ends of the buffer spring 611 are respectively fixed to the inner wall of the receiving cavity 612 and the baffle toward one side of the buffer spring 611. In this embodiment, the setting of the buffer spring 611 provides tensile tension for the plug rod 6211. When the oil outlet 432 discharges oil, the impact force is transmitted to the plug rod 6211, and at the same time, the buffer spring 611 is forced to pull the plug rod 6211 to stretch it, so that the plug rod 6211 is protected from falling off while the oil is discharged, and can be restored to its original position to block the oil outlet 432 when the oil is not discharged.
[0047] It should be noted that in this embodiment, when the insert rod 6211 is pushed toward both sides of the oil injection ring 42 in the axial direction, the bristles 6221 are not in contact with the inner wall of the oil outlet 432 and do not block the oil outlet 432. Therefore, oil can continue to be sprayed through the oil outlet 432 onto the bearing 3 and the gear 5 for lubrication.
[0048] In addition, the mechanical pump bearing lubrication structure 100 further includes at least one oil return hole 7, and the at least one oil return hole 7 is arranged through the bottom of the support box 1. It can be understood that, in some embodiments, the support box 1 is provided with an oil inlet hole at the top for splashing oil inlet and oil return, and such oil return is prone to cause slow oil return speed and high hot oil accumulation rate. Therefore, in this embodiment, the setting of the splash oil inlet hole at the top is cancelled, and the oil return hole 7 is arranged at the bottom of the support box 1, and the size is increased, so as to improve the oil return efficiency and reduce the probability of hot oil accumulation.
[0049] In addition, the mechanical pump bearing lubrication structure 100 further includes a gear box 8, and the support box 1 is located and fixed inside the gear box 8. Through the arrangement of the gear box 8, the return oil of the support box 1 can be stored and reused.
[0050] It should be explained that the drive shaft 2, the bearing 3, the lubrication structure 4 and the gear 5 constitute a mechanical pump assembly, and the mechanical pump assembly is installed in the support box 1 and supported by the gear box 8. This is a prior art means. Figure 3 As shown, the schematic diagram only shows the position distribution of the appearance of each structure, and other configurations in the gear box 8 are not described one by one.
[0051] Furthermore, the mechanical pump bearing lubrication structure 100 also includes an oil distributor valve; the oil distributor valve is arranged inside the gear housing 8, the oil distributor valve is connected to at least one oil pipe branch 9, the oil pipe branch 9 is fixed to the nozzle 41, and the at least one oil pipe branch 9 is connected to the inside of the support housing 1 to supply oil to the nozzle 41. It can be understood that in some embodiments, the oil for lubricating the gears and bearings is in the lower part of the oil pool, and comes from the return oil after lubrication of other large gears and bearings, and the cleanliness is slightly poor; and the wind farm has mechanical pump component bearing wear and stagnation, gear pitting, and even contamination of oil and replacement components or mechanical pumps. Therefore, the oil distributor valve is set in this embodiment to control the oil outlet mode of the oil circuit, select filtered and cooled oil for supply, and select the nearest oil circuit for oil supply, which can reduce the abrasive particles entering the gears and bearings to engage or rotate while also reducing the temperature.
[0052] It should be added that the oil distributor valve controls multiple pipelines, all of which use filtered and cooled oil to lubricate the mechanical pump assembly, such as Figure 4 As shown, the oil supply circuit can preferentially use the nearest oil circuit for oil supply, such as using D33 / D331 / D332 pipeline.
[0053] Furthermore, the at least one oil pipe branch 9 is configured as a hose. In this embodiment, the flexibility of the hose is utilized, so that the oil pipe branch 9 can be better installed and used in conjunction with the support box 1 compared to the use of a hard pipe.
[0054] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A mechanical pump bearing lubrication structure, characterized in that: include: Support box (1); A drive shaft (2) is rotatably mounted inside the support box (1), and two bearings (3) are provided on the outer side of the drive shaft (2); and, The lubrication structure (4) comprises at least one nozzle (41) and at least one oil spray ring (42). The oil spray ring (42) is sleeved on the drive shaft (2) and is located between the two bearings (3). An oil passage (43) is formed in the oil spray ring (42). The oil inlet (431) of the oil passage is opened on the peripheral side surface of the oil spray ring (42) and is connected to the nozzle (41). The oil outlet (432) of the oil passage is opened at both ends of the oil spray ring (42) in the axial direction so as to spray oil toward the side ends of the two bearings (3).
2. The mechanical pump bearing lubrication structure according to claim 1, characterized in that: The two bearings (3) include a first bearing (31) and a second bearing (32); a gear (5) is also provided on the drive shaft (2); the gear (5) is located on a side of the first bearing (31) away from the second bearing (32); The oil injection ring (42) is arranged adjacent to the first bearing (31).
3. The mechanical pump bearing lubrication structure according to claim 1, characterized in that: The mechanical pump bearing lubrication structure (100) further comprises a protective structure (6), wherein the protective structure (6) is arranged inside the oil injection ring (42).
4. The mechanical pump bearing lubrication structure according to claim 3, characterized in that: The protective structure (6) comprises a buffer portion (61) and a protective portion (62) connected to the buffer portion (61); The buffer portion (61) is arranged on both sides of the protection portion (62), and the protection portion (62) and the oil injection ring (42) are elastically connected via the buffer portion (61).
5. The mechanical pump bearing lubrication structure according to claim 4, characterized in that: The protection part (62) comprises a rod part (621) and a cleaning part (622); The rod portion (621) is an inserting rod (6211), and the cleaning portion (622) is a brush bristle (6221); One end of the insertion rod (6211) penetrates into the oil outlet (432) of the oil channel, and the bristles (6221) are arranged around the axis of the rod (621). The other end of the insertion rod (6211) is located outside the oil injection ring (42) and is fixedly installed with a baffle to prevent oil from flowing out of the oil outlet (432) of the oil channel.
6. The mechanical pump bearing lubrication structure according to claim 5, characterized in that: The buffer portion (61) comprises a buffer spring (611) and a receiving cavity (612) for receiving the buffer spring (611); The accommodating cavity (612) is opened at two ends of the oil injection ring (42) in the axial direction and is arranged on both sides of the oil outlet (432) of the oil channel in the diameter direction. The two ends of the buffer spring (611) are respectively fixed to the inner wall of the accommodating cavity (612) and the side of the baffle plate facing the buffer spring (611).
7. The mechanical pump bearing lubrication structure according to claim 1, characterized in that: The mechanical pump bearing lubrication structure (100) further comprises at least one oil return hole (7), and the at least one oil return hole (7) is arranged through the bottom of the supporting box body (1).
8. The mechanical pump bearing lubrication structure according to claim 1, characterized in that: The mechanical pump bearing lubrication structure (100) further comprises a gear box (8), and the support box (1) is located and fixed inside the gear box (8).
9. The mechanical pump bearing lubrication structure according to claim 8, characterized in that: The mechanical pump bearing lubrication structure (100) further comprises an oil circuit distributor valve; The oil circuit distributor valve is arranged inside the gear box (8), and the oil circuit distributor valve is connected to at least one oil pipe branch (9), the oil pipe branch (9) is fixed to the nozzle (41), and the at least one oil pipe branch (9) passes through the inside of the support box (1) to supply oil to the nozzle (41).
10. The mechanical pump bearing lubrication structure according to claim 9, characterized in that: The at least one oil pipe branch (9) is configured as a hose.