Device for prolonging service life of bearing

Abstract

The utility model relates to a device for prolonging the service life of a bearing. The technical problem that an existing lead screw bearing is short in service life is solved. Comprising a rod-shaped body which is obliquely or vertically arranged, the lower end of the rod-shaped body is arranged in a bearing installation channel in a lower bearing seat in a penetrating mode, the rod-shaped body is rotationally connected with a bearing located in the bearing installation channel through a bearing installation structure, and the lower end of the rod-shaped body is sleeved with a water throwing piece. One end of the water throwing piece extends into the bearing installation channel, the other end of the water throwing piece extends to the outer side of the bearing installation channel, and a drainage structure communicated with the bearing installation channel is arranged on the lower bearing seat. The water throwing device has the advantages that water drops on the rod-shaped body can be thrown out through the water throwing piece, the water throwing effect is guaranteed, the bearing can be protected, and the service life of the bearing is prolonged. And water drops condensed by water vapor in the machining process can be discharged through the drainage structure, and the service life of the bearing is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to numerical control machine tool technical field, concretely relates to a device of improving bearing service life. BACKGROUND

[0002] In the modern industrial production field, numerical control machine tool becomes the core equipment of mechanical processing with its high precision, high efficiency and other advantages. Among them, the screw rod as the key transmission component of numerical control machine tool bears the important function of converting rotary motion into linear motion, and its stability and reliability directly affect the machining precision and service life of the machine tool.

[0003] In the actual operation process of the screw rod of the numerical control machine tool, due to the interaction of the screw rod with air, lubricating medium and the like when rotating at high speed, water droplets will inevitably be generated on the surface of the screw rod. Under the action of the centrifugal force generated by the rotation of the screw rod and its own gravity, the water droplets will flow along the axial direction of the screw rod and finally flow to the bearing parts at both ends of the screw rod. As the supporting component of the screw rod rotation, the bearing has strict requirements on the cleanliness and dryness of the working environment, and the invasion of water droplets will dilute the lubricating oil inside the bearing, reduce the lubricating effect and aggravate the wear of the bearing. At the same time, the water droplets may also react with the metal parts of the bearing to cause corrosion, greatly shorten the service life of the bearing, and cause frequent failures of the numerical control machine tool, which not only increases the equipment maintenance cost, but also seriously affects the production efficiency and product quality.

[0004] For example Figure 5 As shown in the figure, when the screw rod rotates at high speed in the non-processing area during processing, a certain amount of heat will be generated, and when turning or milling is carried out in the processing area, a lot of heat will also be generated, resulting in a certain temperature difference between the processing area and the non-processing area. High-pressure water during processing will produce a certain amount of water vapor. Due to the influence of the certain temperature difference, there is a certain probability that the water vapor will wander to the non-processing area. Due to the influence of the temperature difference, the water vapor will condense into water droplets, which will flow to the bearing at B from A and C in the figure, and when the gap of the skeleton oil seal at B is too large, the water droplets at B will flow to D, causing water to enter the bearing at D, corroding the bearing and causing damage, thereby affecting the service life of the bearing Figure 5 。

[0005] In order to solve the problems in the prior art, people have carried out long-term exploration and put forward various solutions. For example, the Chinese patent document discloses a numerical control machine tool screw rod fixed end structure for inclined bed body [202410637268.X], which comprises an inclined drag plate and a screw rod mounted on the inclined drag plate. The screw rod is connected with the inclined drag plate in the axial direction and has a first fixing structure for improving the precision of the screw rod and a second fixing structure for pre-stretching adjustment of the screw rod.

[0006] ​The scheme solves the problem of low service life of the bearing caused by water droplets flowing to the bearing to some extent, but still has many deficiencies, for example, it can only throw out the water droplets on the lead screw, cannot discharge the water vapor generated by the temperature difference between the machining area and the non-machining area, and the water vapor may flow to the non-machining area and condense into water droplets to corrode the bearing and affect the service life of the bearing. SUMMARY

[0007] The utility model discloses a kind of devices for improving bearing service life, to solve the above problems.

[0008] To achieve the above object, the utility model adopts the following technical scheme: a kind of device for improving bearing service life, it includes the rod-shaped body of inclination or vertical arrangement, the lower end of the rod-shaped body is arranged in the bearing mounting channel in the lower bearing seat, and the rod-shaped body is connected with the bearing in the bearing mounting channel by bearing mounting structure and rotates, the lower end of the rod-shaped body is equipped with water throwing element, one end of the water throwing element extends into the bearing mounting channel, and the other end extends to the outside of bearing mounting channel, the lower bearing seat is equipped with drainage structure communicated with bearing mounting channel, bearing can be locked and mounted on the rod-shaped body by bearing mounting structure, can reduce the rotating friction of the rod-shaped body, wherein the water throwing element rotates with the rod-shaped body can throw out the water droplets on the rod-shaped body, can effectively prevent the bearing from being affected by water droplets, improve the service life of bearing, and further improve the waterproof effect of bearing by drainage structure, further improve service life.

[0009] In the above-mentioned device for improving bearing service life, the water throwing element includes a water throwing disc-shaped part and a water throwing cylinder-shaped part, which are coaxially connected by a sealing mounting structure, one end of the water throwing disc-shaped part and the water throwing cylinder-shaped part are arranged in the bearing mounting channel, the water throwing element can be conveniently arranged in the bearing mounting channel by the water throwing disc-shaped part and the water throwing cylinder-shaped part, and the sealing effect between the water throwing element and the rod-shaped body can be ensured by the sealing mounting structure to ensure the waterproof effect.

[0010] In the above-mentioned device for improving bearing service life, one end of the water throwing cylinder-shaped part extends to the outside of one end of the bearing, and the other end of the water throwing cylinder-shaped part is integrally connected with the water throwing disc-shaped part, and one end of the water throwing disc-shaped part away from the water throwing cylinder-shaped part extends to the outside of the bearing mounting channel, which can facilitate the water throwing disc-shaped part to throw water on the rod-shaped body, effectively prevent water droplets from flowing into the bearing mounting channel, and ensure the service life of the bearing.

[0011] In the device for prolonging the service life of bearings, the bearing mounting passage has a first water throwing part accommodating hole, a second water throwing part accommodating hole and a bearing mounting hole arranged in sequence and coaxially and in communication with each other, the second water throwing part accommodating hole is located between the first water throwing part accommodating hole and the bearing mounting hole, the diameter of the first water throwing part accommodating hole and the diameter of the bearing mounting hole are both larger than the diameter of the second water throwing part accommodating hole, the water throwing disc-shaped part can be conveniently placed through the first water throwing part accommodating hole, the water throwing cylinder-shaped part can be conveniently prevented through the second water throwing part accommodating hole, and the bearing can be conveniently mounted through the bearing mounting hole.

[0012] In the device for prolonging the service life of bearings, one end of the water throwing disc-shaped part is rotationally arranged in the first water throwing part accommodating hole, the water throwing cylinder-shaped part is rotationally arranged in the second water throwing part accommodating hole, the water throwing cylinder-shaped part can be limited in the first water throwing part accommodating hole through the water throwing disc-shaped part, the collision between the water throwing cylinder-shaped part and the bearing can be effectively prevented, the mounting efficiency of the water throwing part is improved, and the mounting effect is ensured.

[0013] In the device for prolonging the service life of bearings, the sealing mounting structure comprises a water throwing part mounting hole arranged on the circumferential inner side of the water throwing part and penetrating the water throwing disc-shaped part and the water throwing cylinder-shaped part in sequence, the rod-shaped body is arranged in the water throwing part mounting hole, an annular gap is formed between the circumferential outer side of the rod-shaped body and the circumferential inner side of the water throwing part mounting hole, the annular gap is sealed by glue injection, the circumferential inner side of the end of the water throwing cylinder-shaped part away from the water throwing disc-shaped part has an inwardly bent annular sealing part, the annular sealing part axially abuts against the annular step on the outer side of the rod-shaped body, and an O-ring is arranged between the circumferential inner side of the annular sealing part and the circumferential outer side of the rod-shaped body, the water throwing part can be conveniently sleeved on the rod-shaped body through the water throwing part mounting hole, the connection sealing effect between the water throwing part and the rod-shaped body can be ensured through the annular gap sealed by glue injection, the connection effect between the rod-shaped body and the water throwing part can be improved through the annular sealing part and the annular step, and the sealing effect between the rod-shaped body and the water throwing part can be further improved through the O-ring.

[0014] In the device for prolonging the service life of bearings, the drainage structure comprises a drainage groove arranged on the lower side of the lower bearing seat and in a strip shape, one end of the drainage groove is in communication with the bearing mounting passage and the other end vertically penetrates the lower side of the lower bearing seat, water droplets generated by water vapor can be drained through the drainage groove, and the service life of the bearing can be effectively ensured.

[0015] In the device for prolonging the service life of bearing, the water throwing disc-shaped part has a water throwing ring-shaped part extending outward and arranged in a ring shape on the outer side of the one end of the water throwing cylinder-shaped part, the water throwing ring-shaped part is located on the outer side of the one end of the first water throwing part accommodating hole, and the water throwing disc-shaped part has an annular inclined water guide surface extending outward and arranged on the outer side of the one end of the water throwing part mounting hole, so that the water drops can be guided to the water throwing ring-shaped part, the water drops are thrown out through the water throwing ring-shaped part, and the drainage effect is ensured.

[0016] In the device for prolonging the service life of bearing, the bearing mounting structure comprises a locking nut arranged at the lower end of the rod-shaped body, the locking nut is abutted against the inner ring of the bearing through a spacer, the lower end of the rod-shaped body is sleeved with a gland fixedly connected with the lower bearing seat and abutted against the outer ring of the bearing, and the inner side of the gland is sealed and connected with the outer side of the spacer through a skeleton oil seal, the locking nut can support and abut against the bearing through the spacer to ensure the connecting effect between the rod-shaped body and the bearing, the bearing can be further supported and abutted through the gland to ensure the mounting stability of the bearing, and the sealing effect of the bearing can be ensured through the skeleton oil seal, so that the service life of the bearing is prolonged.

[0017] In the device for prolonging the service life of bearing, the rod-shaped body is a lead screw, and the outer side of the rod-shaped body is sleeved with a lead screw nut sleeve, the lower bearing seat is arranged at the lower end of an inclined or vertical sliding table body, and the upper end of the rod-shaped body is rotationally arranged at the upper end of the sliding table body.

[0018] Compared with the prior art, the device has the advantages that:

[0019] 1. The water drops on the rod-shaped body can be thrown out through the water throwing part, the water throwing effect is ensured, the bearing can be protected, and the service life of the bearing is prolonged.

[0020] 2. The water drops condensed during the machining process can be discharged through the drainage structure, and the service life of the bearing is further prolonged.

[0021] 3. The connecting and sealing effect between the rod-shaped body and the water throwing part can be ensured through the sealing mounting structure, the rotating and water throwing effect of the water throwing part is ensured, and the protection effect on the bearing is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the device.

[0023] Figure 2 It is a structural sectional view of the device.

[0024] Figure 3 It is a structural sectional view of the lower bearing seat in the device.

[0025] Figure 4 This is an application scenario diagram of this utility model.

[0026] Figure 5 This is a schematic diagram of the existing technology.

[0027] In the diagram: 1. Rod-shaped body; 11. Screw nut sleeve; 2. Lower bearing seat; 21. Bearing mounting channel; 211. First water-throwing component receiving hole; 212. Second water-throwing component receiving hole; 213. Bearing mounting hole; 31. Bearing mounting structure; 31. Locking nut; 32. Spacer; 33. Pressure cap; 4. Bearing; 41. Inner ring; 42. Outer ring; 5. Water-throwing component; 51. Water-throwing disc-shaped part; 52. Water-throwing cylindrical part; 53. Water-throwing annular part; 54. Annular inclined water guiding surface; 6. Drainage structure; 61. Drainage groove; 7. Sealing installation structure; 71. Water-throwing component mounting hole; 72. Annular gap; 73. Annular sealing part; 74. Annular step; 75. O-ring; 8. Skeleton oil seal; 9. Slide body. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, this device for improving bearing service life includes a rod-shaped body 1 arranged at an angle or vertically. The lower end of the rod-shaped body 1 passes through a bearing mounting channel 21 in a lower bearing housing 2, and the rod-shaped body 1 is rotatably connected to a bearing 4 located in the bearing mounting channel 21 via a bearing mounting structure 3. A water-throwing component 5 is sleeved on the lower end of the rod-shaped body 1, with one end extending into the bearing mounting channel 21 and the other end extending to the outside of the bearing mounting channel 21. A drainage structure 6 connected to the bearing mounting channel 21 is provided on the lower bearing housing 2. The bearing 4 can be locked and installed on the rod-shaped body 1 through the bearing mounting structure 3, which can reduce the rotational friction of the rod-shaped body 1. The water-throwing component 5 can throw out the water droplets flowing from the rod-shaped body 1 as the rod-shaped body 1 rotates, which can effectively prevent the bearing 4 from being affected by water droplets, improve the service life of the bearing 4, and the drainage structure 6 can further improve the waterproof effect of the bearing 4, further improving its service life.

[0030] Specifically, the water-spinning component 5 includes a water-spinning disc-shaped part 51 and a water-spinning cylindrical part 52, which are coaxially connected to the rod-shaped body 1 and sleeved on it through a sealing installation structure 7. The end of the water-spinning disc-shaped part 51 near the water-spinning cylindrical part 52 and the water-spinning cylindrical part 52 are rotatably disposed in the bearing mounting channel 21. The water-spinning disc-shaped part 51 and the water-spinning cylindrical part 52 facilitate the rotation of the water-spinning component 5 in the bearing mounting channel 21, and the sealing installation structure 7 ensures the sealing effect between the water-spinning component 5 and the rod-shaped body 1, thus ensuring the waterproof effect.

[0031] Wherein, one end of the water throwing cylinder-shaped part 52 extends to the outside of one end of the bearing 4, and the other end of the water throwing cylinder-shaped part 52 is integrated with the water throwing disc-shaped part 51, and the end of the water throwing disc-shaped part 51 away from the water throwing cylinder-shaped part 52 extends to the outside of the bearing mounting channel 21, and the water throwing disc-shaped part 51 can conveniently throw water droplets on the rod-shaped body 1, effectively preventing water droplets from flowing into the bearing mounting channel 21, ensuring the service life of the bearing 4, and the integrated structure of the water throwing disc-shaped part 51 and the water throwing cylinder-shaped part 52 can improve the overall structural strength of the water throwing part 5 and improve the service life.

[0032] As shown in Figure 1 , Figure 2 , Figure 3 The bearing mounting channel 21 has a first water throwing part accommodating hole 211, a second water throwing part accommodating hole 212, and a bearing mounting hole 213 which are coaxial and communicate with each other, the second water throwing part accommodating hole 212 is located between the first water throwing part accommodating hole 211 and the bearing mounting hole 213, and the diameters of the first water throwing part accommodating hole 211 and the bearing mounting hole 213 are both greater than the diameter of the second water throwing part accommodating hole 212, the first water throwing part accommodating hole 211 can conveniently place the water throwing disc-shaped part 51, the second water throwing part accommodating hole 212 can conveniently prevent the water throwing cylinder-shaped part 52, and the bearing mounting hole 213 can conveniently install and place the bearing 4.

[0033] Further, one end of the water throwing disc-shaped part 51 is rotationally arranged in the first water throwing part accommodating hole 211, and the water throwing cylinder-shaped part 52 is rotationally arranged in the second water throwing part accommodating hole 212, and the water throwing disc-shaped part 51 in the first water throwing part accommodating hole 211 can limit the water throwing cylinder-shaped part 52, effectively preventing the water throwing cylinder-shaped part 52 from colliding with the bearing 4, improving the installation efficiency of the water throwing part 5, and ensuring the installation effect.

[0034] The sealing mounting structure 7 comprises a water throwing part mounting hole 71 arranged on the circumferential inner side of the water throwing part 5 and penetrating the water throwing disc-shaped part 51 and the water throwing cylinder-shaped part 52 in sequence, the rod-shaped body 1 is arranged in the water throwing part mounting hole 71, an annular gap 72 is formed between the circumferential outer side of the rod-shaped body 1 and the circumferential inner side of the water throwing part mounting hole 71, the annular gap 72 is sealed by glue injection, the circumferential inner side of the end of the water throwing cylinder-shaped part 52 away from the water throwing disc-shaped part 51 is provided with an inwardly bent annular sealing part 73, the annular sealing part 73 and an annular step 74 on the outer side of the rod-shaped body 1 are axially abutted, and an O-shaped ring 75 is arranged between the circumferential inner side of the annular sealing part 73 and the circumferential outer side of the rod-shaped body 1. The water throwing part 5 can be conveniently sleeved on the rod-shaped body 1 through the water throwing part mounting hole 71, the connection sealing effect between the water throwing part 5 and the rod-shaped body 1 can be ensured through the annular gap 72 sealed by glue injection, the connection effect between the rod-shaped body 1 and the water throwing part 5 can be improved through the annular sealing part 73 and the annular step 74, and the sealing effect between the rod-shaped body 1 and the water throwing part 5 can be further improved through the O-shaped ring 75.

[0035] As shown in Figs. 7-9, Figure 1 , Figure 2 , Figure 3 The drainage structure 6 comprises a drainage groove 61 arranged on the lower side of the lower bearing seat 2 and in a strip shape, one end of the drainage groove 61 is communicated with the bearing mounting channel 21 and the other end vertically penetrates the lower side of the lower bearing seat 2. The water droplets generated by water vapor can be drained through the drainage groove 61, and the service life of the bearing 4 can be effectively ensured.

[0036] The circumferential outer side of the end of the water throwing disc-shaped part 51 away from the water throwing cylinder-shaped part 52 is provided with a water throwing annular part 53 extending outward and in an annular shape, the water throwing annular part 53 is located on the outer side of one end of the first water throwing part containing hole 211, and the circumferential inner side of the end of the water throwing disc-shaped part 51 away from the water throwing cylinder-shaped part 52 is provided with an annular inclined water guide surface 54 arranged on one end of the water throwing part mounting hole 71 and extending outwardly and obliquely. The water droplets can be guided to the water throwing annular part 53 through the annular inclined water guide surface 54, and the water droplets can be thrown out through the water throwing annular part 53, so that the drainage effect is ensured.

[0037] Specifically, the bearing mounting structure 3 comprises a locking nut 31 arranged on the lower end of the rod-shaped body 1, the locking nut 31 is abutted with the inner ring 41 of the bearing 4 through a spacer 32, a gland 33 fixedly connected with the lower bearing seat 2 and abutted with the outer ring 42 of the bearing 4 is sleeved on the circumferential outer side of the lower end of the rod-shaped body 1, and the circumferential inner side of the gland 33 and the circumferential outer side of the spacer 32 are sealed and connected through the skeleton oil seal 8. The locking nut 31 can support and abut the bearing 4 through the spacer 32 to ensure the connection effect between the rod-shaped body 1 and the bearing 4, and the bearing 4 can be further supported and abutted through the gland 33 to ensure the installation stability of the bearing 4. The sealing effect of the bearing 4 can be ensured through the skeleton oil seal 8, and the service life of the bearing 4 is ensured.

[0038] Combination Figure 4 As shown in the figure, the rod-shaped body 1 is a lead screw, and a lead screw nut sleeve 11 is sleeved outside the rod-shaped body 1 in the circumferential direction, the lower bearing seat 2 is installed at the lower end of the sliding table body 9 arranged in an inclined or vertical manner, and the upper end of the rod-shaped body 1 is rotationally arranged at the upper end of the sliding table body 9.

[0039] The principle of the embodiment is that the bearing installation channel 21 can facilitate the installation of the rod-shaped body 1 and the bearing 4, the bearing installation structure 3 can ensure the support and sealing effect of the bearing 4, ensure the connection effect between the rod-shaped body 1 and the bearing 4, the sealing installation structure 7 can ensure the connection and sealing effect between the rod-shaped body 1 and the water throwing member 5, effectively prevent the water droplets on the rod-shaped body 1 from flowing to the bearing 4, ensure the service life of the bearing 4, and the water throwing member 5 can facilitate the throwing of the water droplets on the rod-shaped body 1, which can effectively prevent the water droplets from affecting the bearing 4, and the drainage structure 6 can further drain the water droplets generated by the water vapor, further improving the service life of the bearing 4.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0041] Although the terms rod-shaped body 1, lead screw nut sleeve 11, lower bearing seat 2, bearing installation channel 21, first water throwing member containing hole 211, second water throwing member containing hole 212, bearing installation hole 213, bearing installation structure 3, locking nut 31, spacer ring 32, gland 33, bearing 4, inner ring 41, outer ring 42, water throwing member 5, water throwing disc-shaped part 51, water throwing cylinder-shaped part 52, water throwing ring-shaped part 53, annular inclined water guide surface 54, drainage structure 6, drainage groove 61, sealing installation structure 7, water throwing member installation hole 71, annular gap 72, annular sealing part 73, annular step 74, O-ring 75, skeleton oil seal 8, sliding table body 9, etc. are used more frequently in this document, but the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A device for improving bearing service life, comprising an inclined or vertically arranged rod-shaped body (1), the lower end of which passes through a bearing mounting channel (21) within a lower bearing housing (2), and the rod-shaped body (1) is rotatably connected to a bearing (4) located within the bearing mounting channel (21) via a bearing mounting structure (3), characterized in that, The lower end of the rod-shaped body (1) is fitted with a water-throwing component (5). One end of the water-throwing component (5) extends into the bearing mounting channel (21) and the other end extends to the outside of the bearing mounting channel (21). The lower bearing seat (2) is provided with a drainage structure (6) that communicates with the bearing mounting channel (21).

2. The device for improving bearing service life according to claim 1, characterized in that, The water-throwing component (5) includes a water-throwing disc-shaped part (51) and a water-throwing cylindrical part (52) that are sleeved on the rod-shaped body (1) and coaxially connected by a sealing installation structure (7). The end of the water-throwing disc-shaped part (51) near the water-throwing cylindrical part (52) and the water-throwing cylindrical part (52) are rotatably disposed in the bearing installation channel (21).

3. The device for improving bearing service life according to claim 2, characterized in that, One end of the water-spinning cylindrical part (52) extends to the outside of one end of the bearing (4), and the other end of the water-spinning cylindrical part (52) is connected to the water-spinning disc part (51). The end of the water-spinning disc part (51) away from the water-spinning cylindrical part (52) extends to the outside of the bearing mounting channel (21).

4. A device for improving bearing service life according to claim 2 or 3, characterized in that, The bearing mounting channel (21) has a first water-throwing component receiving hole (211), a second water-throwing component receiving hole (212), and a bearing mounting hole (213) that are coaxial and interconnected in sequence. The second water-throwing component receiving hole (212) is located between the first water-throwing component receiving hole (211) and the bearing mounting hole (213), and the diameter of the first water-throwing component receiving hole (211) and the diameter of the bearing mounting hole (213) are both larger than the diameter of the second water-throwing component receiving hole (212).

5. The device for improving bearing service life according to claim 4, characterized in that, One end of the water-spraying disc-shaped part (51) is rotatably disposed in the first water-spraying component receiving hole (211), and the water-spraying cylindrical part (52) is rotatably disposed in the second water-spraying component receiving hole (212).

6. The device for improving bearing service life according to claim 4, characterized in that, The sealing installation structure (7) includes a water-spinning component mounting hole (71) located on the inner circumferential side of the water-spinning component (5) and passing through the water-spinning disc-shaped part (51) and the water-spinning cylindrical part (52) in sequence. The rod-shaped body (1) passes through the water-spinning component mounting hole (71), and an annular gap (72) is formed between the outer circumferential side of the rod-shaped body (1) and the inner circumferential side of the water-spinning component mounting hole (71). The annular gap (72) is sealed by injection. The inner circumferential side of the end of the water-spinning cylindrical part (52) away from the water-spinning disc-shaped part (51) has an inwardly bent annular sealing part (73). The annular sealing part (73) and the annular step (74) on the outer side of the rod-shaped body (1) abut axially. An O-ring (75) is provided between the inner circumferential side of the annular sealing part (73) and the outer circumferential side of the rod-shaped body (1).

7. The device for improving bearing service life according to claim 4, characterized in that, The drainage structure (6) includes a long strip-shaped drainage groove (61) located on the lower side of the lower bearing seat (2). One end of the drainage groove (61) is connected to the bearing mounting channel (21), and the other end vertically penetrates the lower side of the lower bearing seat (2).

8. The device for improving bearing service life according to claim 6, characterized in that, The water-throwing disc-shaped part (51) has a water-throwing ring-shaped part (53) extending outward and forming an annular shape at one end away from the water-throwing cylindrical part (52). The water-throwing ring-shaped part (53) is located outside one end of the first water-throwing component receiving hole (211). The water-throwing disc-shaped part (51) has an annular inclined water-guiding surface (54) extending outward at one end of the water-throwing component mounting hole (71).

9. The device for improving bearing service life according to claim 4, characterized in that, The bearing mounting structure (3) includes a locking nut (31) located at the lower end of the rod-shaped body (1). The locking nut (31) abuts against the inner ring (41) of the bearing (4) through a spacer (32). A pressure cap (33) is sleeved on the lower circumferential outer side of the rod-shaped body (1), which is fixedly connected to the lower bearing seat (2) and abuts against the outer ring (42) of the bearing (4). The pressure cap (33) is circumferentially inner and the spacer (32) is circumferentially outer, and the pressure cap (33) is sealed and connected by a skeleton oil seal (8).

10. The device for improving bearing service life according to claim 1, characterized in that, The rod-shaped body (1) is a lead screw and a lead screw nut sleeve (11) is sleeved on the outer side of the rod-shaped body (1). The lower bearing seat (2) is installed at the lower end of the inclined or vertically arranged slide body (9), and the upper end of the rod-shaped body (1) is rotatably arranged at the upper end of the slide body (9).

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