A splash lubrication device for bearing test equipment

Abstract

The present invention relates to bearing test technology, specifically a splash lubrication device for bearing test equipment, including a bearing seat, a test bearing, an oil inlet pipe joint, an oil slinger, a rotating shaft and an oil inlet cover, the test bearing inner ring and the oil slinger are fixedly sleeved on the left end of the rotating shaft, and the bearing seat is arranged outside the test bearing and the oil slinger; the test bearing outer ring is installed in the first inner hole of the bearing seat 1, a coaxial first step hole is arranged on the right side of the first inner hole, and an oil storage tank is arranged in the step surface of the first step hole; the oil slinger includes a circular disk body, the outer diameter surface of the disk body is located in the first step hole and is in clearance with the first step hole; the right end surface of the disk body is provided with an oil inlet groove with an opening at the right end, the outer inner wall of the oil inlet groove is evenly distributed with oil outlet holes connected to the outer diameter surface of the oil slinger, and the outer diameter surface of the disk body of the oil slinger is provided with a spiral oil groove. The present invention is suitable for bearing splash lubrication test, when the oil slinger is slinging oil, the oil storage tank and the oil storage cavity work together to realize that the amount of lubricating oil inlet can be controlled and measured.

Description

Technical Field

[0001] The invention relates to a bearing test technology, in particular to a splash lubrication device for bearing test equipment. Background Art

[0002] Splash lubrication is a method of splashing the lubricating oil at the bottom of a sealed housing onto the housing wall through the rotation of a rotating part, and then guiding it to the parts that require lubrication through an oil collection channel. This bearing lubrication method is widely used in aircraft engines, turbine reducers and gearboxes.

[0003] The flow process of splash lubrication lubricating oil is complicated, and the oil collection tank needs to be reasonably arranged to avoid bearing failure due to ineffective lubrication, and to prevent the problem of premature bearing failure caused by excessive temperature rise of lubricating oil due to compact structure. In the existing bearing test equipment, the bearing splash lubrication is to spray pressurized lubricating oil onto the gear installed on the rotating shaft. The gear will splash the lubricating oil onto the inner wall of the box or the bearing seat, and part of the lubricating oil will flow to the bearing. However, this splash lubrication method does not have a dedicated oil collection tank and oil guide channel for bearing lubrication, and cannot control the amount of lubricating oil entering the bearing, and there is no way to verify the effectiveness of bearing lubrication. Summary of the invention

[0004] In view of the problems pointed out in the background technology, the purpose of the present invention is to disclose a splash lubrication device for bearing testing equipment, which, through structural design, can make the inflow of lubricating oil controllable and measurable during the splash lubrication test, thereby effectively improving the test accuracy of the bearing splash lubrication test.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A splash lubrication device for a bearing test device, comprising a bearing seat, a test bearing, an oil inlet pipe joint, an oil slinging plate, a rotating shaft and an oil inlet cover, wherein the rotating shaft is arranged horizontally, the inner ring of the test bearing and the oil slinging plate are fixedly sleeved on the left end of the rotating shaft, the oil slinging plate is located on the right side of the inner ring of the test bearing, and the bearing seat is arranged outside the test bearing and the oil slinging plate;

[0007] The bearing seat has a first inner hole with two ends through, a first oil outlet connected to the outside is provided on the lower hole wall of the left end of the first inner hole, and a coaxial first step hole is provided on the right side of the first inner hole, and the inner diameter of the first step hole is larger than the first inner hole; the outer ring of the test bearing is installed in the first inner hole of the bearing seat and is located on the right side of the first oil outlet; the oil-slinging plate includes a plate body, which is annular and has an annular boss extending axially on the circumference of the left end surface, and the outer diameter surface of the plate body is located in the first step hole and is in clearance with the first step hole; an oil storage tank is provided in the step surface of the first step hole of the bearing seat, and the oil storage tank is located on the upper right side of the outer ring of the test bearing, and the oil storage tank is connected to the right end hole of the first inner hole through a gravity oil channel;

[0008] The right end surface of the oil-slinging plate body is provided with an oil inlet groove with an opening at the right end. The oil inlet groove is an annular groove, and the inner wall of the outer side is evenly distributed with oil outlet holes connected to the outer diameter surface of the plate body. The outer diameter surface of the plate body is provided with a spiral oil groove. When the oil-slinging plate rotates with the rotating shaft, the lubricating oil in the oil inlet groove is thrown out from the oil outlet hole to the inner wall of the first step hole. The spiral oil groove collects the lubricating oil on the inner wall of the first step hole through rotation, and transports the lubricating oil to the oil storage tank.

[0009] The oil inlet cover is fixedly installed on the right side of the bearing seat, and an oil delivery channel is arranged inside the oil inlet cover. The inlet end of the oil delivery channel is connected to the oil inlet pipe joint, and the outlet end is arranged at the oil inlet slot opening of the oil throwing plate.

[0010] The left end of the first inner hole is sealed with a left pressure cover, a first lubricating oil chamber is formed between the left pressure cover and the test bearing, and a second lubricating oil chamber is formed between the oil-slinging plate and the test bearing; when the oil-slinging plate is stationary, the lubricating oil in the second lubricating oil chamber is used as reserve oil; when the oil-slinging plate rotates, part of the lubricating oil in the second lubricating oil chamber flows to the first lubricating oil chamber.

[0011] The oil storage tank includes a tank body and an oil baffle plate. The tank body is an arc tank with an opening at the right end, and its upper wall is connected to the hole wall of the first step hole; the oil baffle plate is installed at the opening of the tank body and a gap is left between the hole wall of the first step hole; the annular boss on the left end face of the plate body of the oil-slinging plate is inserted between the oil baffle plate and the hole wall of the first step hole.

[0012] The oil-slinging pan has a first sleeve in the middle of the left end surface of the pan body, the axial length of the first sleeve is greater than the axial length of the annular boss, and the first sleeve conflicts with the inner ring of the test bearing; the outer diameter surface of the first sleeve is a conical surface, and the left end diameter of the conical surface is smaller than the right end diameter.

[0013] The oil inlet groove on the right end face of the oil-slinging pan is an annular groove with an opening at the right end. The oil inlet cover covers the oil inlet groove, and the oil inlet cover is clearance-matched with the right end face of the right end face of the oil-slinging pan.

[0014] The second lubricating oil chamber is provided with a second oil outlet and a third oil outlet. The second oil outlet is located at the front side of the right part of the first oil outlet, and the third oil outlet is located at the rear side of the right part of the first oil outlet. The second oil outlet and the third oil outlet are symmetrical about the first oil outlet. The second oil outlet and the third oil outlet are used to discharge excess lubricating oil in the second lubricating oil chamber, so that the lubricating oil stock inside the second lubricating oil chamber remains stable.

[0015] The right end of the left gland has a clamping ring, which is inserted into the first inner hole. The left side of the outer ring of the test bearing is clamped by the clamping ring. The inner hole wall of the clamping ring is provided with a through groove corresponding to the first oil outlet.

[0016] The outer ring of the test bearing is matched with the first inner hole of the bearing seat; the left side of the inner ring of the test bearing is tightened with a locking nut.

[0017] The left end of the rotating shaft has a stepped shaft, the diameter of which is smaller than that of the rotating shaft; the inner ring of the test bearing and the oil-slinging plate are both installed on the stepped shaft; the middle part of the right end surface of the oil-slinging plate has a second sleeve, which conflicts with the stepped surface of the stepped shaft.

[0018] The right end of the first step hole of the bearing seat is provided with a second step hole, and the oil inlet cover is installed in the second step hole.

[0019] The oil inlet pipe joint is installed on the upper right end surface of the oil inlet cover.

[0020] The beneficial effects of the present invention are as follows: the present invention designs an oil guide structure and an oil storage structure suitable for a bearing splash lubrication test, the overall structure is simple and compact, and when the oil-slinging plate throws the oil, the oil storage tank and the oil storage cavity work together to achieve controllable and measurable oil intake, thereby ensuring the stability of the bearing splash lubrication test and improving the test accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the overall structure of the present invention in the main viewing direction.

[0022] Figure 2 This is the right side view of the bearing seat.

[0023] Figure 3 This is the Ⅰ-Ⅰ cross-sectional view of the bearing seat.

[0024] Figure 4 This is the II-II cross-sectional view of the bearing seat.

[0025] Figure 5 This is the left side view of the oil throwing pan.

[0026] Figure 6 This is the Ⅰ-Ⅰ cross-sectional view of the oil-slinging pan.

[0027] In the figure: 1. bearing seat, 2. left pressure cover, 3. locking nut, 4. test bearing, 5. oil baffle plate, 6. oil inlet pipe joint, 7. oil throwing tray, 8. rotating shaft, 9. oil inlet cover, 10. tank body. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the drawings of this specification. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1 to Figure 6 As shown, the present invention discloses a splash lubrication device for a bearing test device, comprising:

[0030] The rotating shaft 8 is horizontally arranged, the inner ring of the test bearing 4 and the oil-slinging plate 7 are fixedly connected to the left end of the rotating shaft 8, the oil-slinging plate 7 is located on the right side of the inner ring of the test bearing 4, and the bearing seat 1 is fixed to the outside of the left end of the rotating shaft 8;

[0031] The bearing seat 1 has a first inner hole with two ends through, and the lower hole wall at the left end of the first inner hole is provided with a first oil outlet connected to the outside, and a coaxial first step hole is provided on the right side of the first inner hole, and the inner diameter of the first step hole is larger than the first inner hole; the outer ring of the test bearing 4 is installed in the first inner hole of the bearing seat 1 and is located on the right side of the first oil outlet; an oil storage tank is provided in the step surface of the first step hole of the bearing seat 1, and the oil storage tank is located on the upper right side of the outer ring of the test bearing 4, and the oil storage tank is connected to the right end hole of the first inner hole through a gravity oil channel; the oil storage tank includes a tank body 10 and an oil baffle plate 5, the tank body 10 is an arc tank with an opening at the right end, and its upper wall surface is connected to the hole wall of the first step hole; the oil baffle plate 5 is installed at the opening of the tank body 10 and a gap is left between it and the hole wall of the first step hole;

[0032] The oil-slinging plate 7 includes a plate body, which is annular and has an annular boss extending axially on the circumference of the left end face, and the outer diameter surface of the plate body is located in the first step hole and is in clearance with the first step hole; the right end face of the plate body of the oil-slinging plate 7 is provided with an oil inlet groove with a right end opening, and the oil inlet groove is an annular groove, and the outer inner wall thereof is evenly distributed with oil outlet holes connected to the outer diameter surface of the plate body; the outer diameter surface of the plate body of the oil-slinging plate 7 is provided with a spiral oil groove; when the oil-slinging plate 7 rotates with the rotating shaft 8, the lubricating oil in the oil inlet groove is thrown out from the oil outlet hole to the inner wall of the first step hole, and the spiral oil groove collects the lubricating oil on the inner wall of the first step hole through rotation, The lubricating oil is delivered to the oil storage tank in the step surface of the first step hole of the bearing seat 1; the annular boss on the circumference of the left end surface of the plate body is inserted between the oil baffle plate 5 and the hole wall of the first step hole; the oil-slinging plate 7 has a first sleeve in the middle of its left end surface, the axial length of the first sleeve is greater than the axial length of the annular boss, and the first sleeve is in conflict with the inner ring of the test bearing 4; the outer diameter surface of the first sleeve is a conical surface, the left end diameter of the conical surface is smaller than the right end diameter, and the conical surface design can make the lubricating oil automatically flow to the test bearing 4; the oil inlet groove of the oil-slinging plate 7 is an annular groove with an opening at the right end;

[0033] The oil inlet cover 9 covers the oil inlet groove, and the oil inlet cover 9 is in clearance with the right end surface of the oil slinger plate; the oil inlet cover 9 is fixedly mounted on the right side of the bearing seat 1, and an oil delivery channel is arranged inside the oil inlet cover 9, the inlet end of the oil delivery channel is connected to the oil inlet pipe joint 6, and the outlet end is arranged at the oil inlet cavity opening of the oil slinger plate 7;

[0034] The left pressure cover 2 is closed at the left end of the first inner hole; the right end of the left pressure cover 2 is provided with a clamping ring, which is inserted into the first inner hole. The left side of the outer ring of the test bearing 4 is clamped by the clamping ring, and the inner hole wall of the clamping ring is provided with a through groove corresponding to the first oil outlet.

[0035] In the present invention, a first lubricating oil chamber is formed between the left pressure cover 2 and the test bearing 4, and a second lubricating oil chamber is formed between the oil-slinging plate 7 and the test bearing 4; when the oil-slinging plate 7 is stationary, the lubricating oil in the second lubricating oil chamber is used as reserve oil; when the oil-slinging plate 7 rotates, part of the lubricating oil in the second lubricating oil chamber flows to the first lubricating oil chamber. The first oil outlet of the first inner hole of the bearing seat 1 discharges the lubricating oil in the first lubricating oil chamber; a second oil outlet and a third oil outlet are provided in the second lubricating oil chamber, the second oil outlet is located at the front side of the right part of the first oil outlet, and the third oil outlet is located at the rear side of the right part of the first oil outlet, the second oil outlet and the third oil outlet are symmetrical about the first oil outlet, the chamber area between the second oil outlet and the third oil outlet constitutes the oil storage chamber of the second lubricating oil chamber, and the second oil outlet and the third oil outlet are used to discharge the excess lubricating oil in the second lubricating oil chamber, so that the lubricating oil stock inside the second lubricating oil chamber remains stable.

[0036] The outer ring of the test bearing 4 is matched with the first inner hole of the bearing seat 1; the left side of the inner ring of the test bearing 4 is tightened by the locking nut 3.

[0037] The left end of the rotating shaft 8 has a stepped shaft, and the diameter of the stepped shaft is smaller than the diameter of the rotating shaft 8; the inner ring of the test bearing 4 and the oil-slinging plate 7 are both installed on the stepped shaft; the middle part of the right end face of the oil-slinging plate 7 has a second sleeve, and the second sleeve conflicts with the step surface of the stepped shaft.

[0038] The right end of the first step hole of the bearing seat 1 is provided with a second step hole, and the oil inlet cover 9 is installed in the second step hole.

[0039] The oil inlet pipe joint 6 is installed on the upper right end surface of the oil inlet cover 9.

[0040] refer to Figure 1 , arrow A indicates the lubricating oil inlet, arrow B indicates the oil inlet groove of the oil-slinging plate 7, arrow C indicates the oil storage groove of the bearing seat 1, arrow D indicates the second lubricating oil chamber, arrow E indicates the oil storage chamber of the second lubricating oil chamber, arrow F indicates the first oil outlet, and arrow G indicates the lubricating oil return direction.

[0041] refer to Figure 2 , Figure 3 In order to prevent the lubricating oil from stagnating in the bearing seat 1, high temperature will be generated at high speed, which is not good for the test bearing 4. Therefore, the second and third oil outlets are designed at positions H and K symmetrically about the first oil outlet on both sides P° inside the second lubricating oil chamber to discharge excess lubricating oil. Figure 3In the embodiment, the lubricating oil return port G1 is connected to the first oil outlet, the lubricating oil return port G2 is connected to the second oil outlet, and the lubricating oil return port G3 is connected to the third oil outlet.

[0042] In order to ensure the lubrication effect of the test bearing 4, the oil inlet groove structure, volume of the oil-slinging plate 7 and the size and number of oil outlet holes evenly distributed on the outer circle of the oil-slinging plate 7 need to be designed and calculated according to the lubrication requirements, and the amount of splashing lubricating oil should be able to meet the lubrication requirements of the test bearing 4 as much as possible.

[0043] refer to Figure 1-6 During the test, the lubricating oil flows from the lubricating oil inlet indicated by arrow A and enters the oil inlet groove of the oil-slinging plate 7 indicated by arrow B. The rotating shaft 8 drives the oil-slinging plate 7 to rotate at high speed. The high-speed rotating oil-slinging plate 7 throws out a part of the lubricating oil from the multiple oil outlet holes of the oil inlet groove at high speed, splashing between the outer circumference of the oil-slinging plate 7 and the inner wall of the first step hole of the bearing seat 1, and the other part of the lubricating oil flows into the oil storage cavity of the second lubricating oil cavity indicated by arrow E; the lubricating oil on the inner wall of the first step hole flows into the spiral oil groove of the outer circumference of the oil-slinging plate 7, and the lubricating oil flows along the spiral oil groove into the oil storage groove of the bearing seat 1 indicated by arrow C, and flows into the second lubricating oil cavity indicated by arrow D through the gravity oil channel of the oil storage groove. At this time, part of the lubricating oil enters the test bearing 4, and part of it flows into the oil storage cavity of the second lubricating oil cavity indicated by arrow E. Thereafter, the lubricating oil flowing into the oil storage cavity of the second lubricating oil cavity is used as the lubricating reserve oil of the test bearing 4, and together with the lubricating oil entering from the lubricating oil inlet, it is splashed by the high-speed rotation of the oil-slinging plate 7 to provide circulating lubrication for the test bearing 4. When the lubricating oil reserve in the oil storage chamber of the second lubricating oil chamber exceeds the positions H and K, the excess lubricating oil flows through the lubricating oil return port G2 and the lubricating oil return port G3 from the second and third oil outlets at H and K, respectively, and is discharged. The lubricating oil entering the test bearing 4 passes through the test bearing 4 and is discharged from the left side, and enters the first oil outlet indicated by the arrow F and flows through the lubricating oil return port G1 to be discharged. The amount of lubricating oil discharged from the lubricating oil return port G1 is the actual amount of lubricating oil in the test bearing 4. The actual lubricating flow of the test bearing 4 can be measured by connecting the pipeline from the lubricating oil return port G1 to the flow calibration container or by installing a flow sensor on the oil outlet pipeline of the lubricating oil return port G1.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

[0045] Parts of the present invention not described in detail are prior art.

Claims

1. A splash lubrication device for a bearing test device, comprising a bearing seat (1), a test bearing (4), an oil inlet pipe joint (6), an oil slinger (7), a rotating shaft (8) and an oil inlet cover (9), wherein: The rotating shaft (8) is arranged horizontally, the inner ring of the test bearing (4) and the oil-slinging plate (7) are fixedly sleeved on the left end of the rotating shaft (8), the oil-slinging plate (7) is located on the right side of the inner ring of the test bearing (4), and the bearing seat (1) is arranged outside the test bearing (4) and the oil-slinging plate (7); The bearing seat (1) has a first inner hole with two ends through, a first oil outlet connected to the outside is provided on the lower hole wall at the left end of the first inner hole, and a coaxial first step hole is provided on the right side of the first inner hole, and the inner diameter of the first step hole is larger than the first inner hole; the outer ring of the test bearing (4) is installed in the first inner hole of the bearing seat (1) and is located on the right side of the first oil outlet; the oil-slinging plate (7) includes a plate body, which is annular and has an annular boss extending axially on the circumference of the left end surface, and the outer diameter surface of the plate body is located in the first step hole and is in clearance with the first step hole; an oil storage tank is provided in the step surface of the first step hole of the bearing seat (1), and the oil storage tank is located on the upper right side of the outer ring of the test bearing (4), and the oil storage tank is connected to the right end hole of the first inner hole through a gravity oil passage; The oil-slinging plate (7) has an oil inlet groove with an opening at the right end on the right end of its plate body. The oil inlet groove is an annular groove, and its outer inner wall is evenly distributed with oil outlet holes connected to the outer diameter surface of the plate body. The outer diameter surface of the plate body is provided with a spiral oil groove. When the oil-slinging plate (7) rotates with the rotating shaft (8), the lubricating oil in the oil inlet groove is spun out from the oil outlet hole to the inner wall of the first step hole. The spiral oil groove collects the lubricating oil on the inner wall of the first step hole through rotation, and transports the lubricating oil to the oil storage tank. The oil inlet cover (9) is fixedly mounted on the right side of the bearing seat (1), and an oil delivery channel is provided inside the oil inlet cover (9). The inlet end of the oil delivery channel is connected to the oil inlet pipe joint (6), and the outlet end is arranged correspondingly at the opening of the oil inlet groove of the oil slinger plate (7); The left end of the first inner hole is sealed with a left pressure cover (2), a first lubricating oil chamber is formed between the left pressure cover (2) and the test bearing (4), and a second lubricating oil chamber is formed between the oil slinger (7) and the test bearing (4); when the oil slinger (7) is stationary, the lubricating oil in the second lubricating oil chamber is used as reserve oil; when the oil slinger (7) rotates, part of the lubricating oil in the second lubricating oil chamber flows into the first lubricating oil chamber; The second lubricating oil chamber is provided with a second oil outlet and a third oil outlet. The second oil outlet is located at the front side of the right part of the first oil outlet, and the third oil outlet is located at the rear side of the right part of the first oil outlet. The second oil outlet and the third oil outlet are symmetrical about the first oil outlet. The second oil outlet and the third oil outlet are used to discharge excess lubricating oil in the second lubricating oil chamber, so that the lubricating oil stock inside the second lubricating oil chamber remains stable.

2. A splash lubrication device for a bearing test equipment according to claim 1, characterized in that: The oil storage tank comprises a tank body (10) and an oil baffle plate (5); the tank body (10) is an arc tank with an opening at the right end, and its upper wall surface is connected to the hole wall of the first step hole; the oil baffle plate (5) is installed at the opening of the tank body (10) and a gap is left between the oil baffle plate (5) and the hole wall of the first step hole; the annular boss on the left end surface of the plate body of the oil slinger plate (7) is inserted between the oil baffle plate (5) and the hole wall of the first step hole.

3. A splash lubrication device for a bearing test equipment according to claim 2, characterized in that: The oil-slinging pan (7) has a first sleeve in the middle of the left end surface of the pan body, the axial length of the first sleeve is greater than the axial length of the annular boss, and the first sleeve abuts against the inner ring of the test bearing (4); the outer diameter surface of the first sleeve is a conical surface, and the left end diameter of the conical surface is smaller than the right end diameter.

4. A splash lubrication device for a bearing test equipment according to claim 1, characterized in that: The oil inlet groove on the right end surface of the oil slinger plate (7) is an annular groove with an opening at the right end. The oil inlet cover (9) covers the oil inlet groove, and the oil inlet cover (9) is clearance-matched with the right end surface of the oil slinger plate (7).

5. The splash lubrication device for bearing testing equipment according to claim 1, characterized in that: The right end of the left gland (2) has a clamping ring, which is inserted into the first inner hole. The left side of the outer ring of the test bearing (4) is clamped by the clamping ring. The inner hole wall of the clamping ring is provided with a through groove corresponding to the first oil outlet.

6. The splash lubrication device for bearing testing equipment according to claim 1, characterized in that: The outer ring of the test bearing (4) is matched with the first inner hole of the bearing seat (1); the left side of the inner ring of the test bearing (4) is tightened by a locking nut (3).

7. The splash lubrication device for bearing testing equipment according to claim 1, characterized in that: The left end of the rotating shaft (8) has a stepped shaft, the diameter of which is smaller than the diameter of the rotating shaft (8); the inner ring of the test bearing (4) and the oil-slinging plate (7) are both mounted on the stepped shaft; the middle portion of the right end surface of the oil-slinging plate (7) has a second sleeve, the second sleeve abutting against the stepped surface of the stepped shaft.

8. The splash lubrication device for bearing testing equipment according to claim 1, characterized in that: The bearing seat (1) has a second step hole at the right end of the first step hole, and the oil inlet cover (9) is installed in the second step hole.

9. The splash lubrication device for bearing testing equipment according to claim 1, characterized in that: The oil inlet pipe joint (6) is mounted on the upper right end surface of the oil inlet cover (9).

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