Center water outlet gear box with lubrication protection function

Abstract

The utility model relates to the technical field of gear boxes, in particular to a center water outlet gear box with a lubrication protection function, which comprises an outer shell and a central spindle for center water outlet, and the upper end and the lower end of the central spindle are rotatably mounted on the outer shell through a first bearing and a second bearing respectively. A driving mechanism used for driving the mandrel to rotate is arranged on the outer shell, an oil conveying hole and an oil outlet hole are formed in the outer shell, when the lubricating device is used, the mandrel is arranged in the lubricating area, the lower bottom face of the lubricating area is higher than the lower bottom face of the deposition area, it is guaranteed that oil in the deposition area overflows to the position of the mandrel, and then the mandrel is lubricated; oil input through the oil conveying hole lubricates the first bearing and then enters the cavity to lubricate parts in the cavity, then the oil is accumulated in the deposition area, the liquid level of the oil is gradually raised and overflows to the lubricating area along with increase of the oil, and the oil enters the second bearing to be lubricated and then is discharged through the oil outlet hole.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a central water outlet gear box with lubrication and protection functions. Background Art

[0002] The gearbox mainly includes an outer shell and components installed in the outer shell. As the only mechanical transmission component, the components in the outer shell need to be lubricated to ensure smooth operation of the gears. The existing lubricating oil is directly injected into the outer shell and splashes the oil to the required position during gear transmission. At the same time, the iron filings at the bottom of the outer shell cannot be deposited, causing the iron filings in the oil to be brought into the transmission components. They will accumulate between the components for a long time, causing the components to not operate normally and reducing the service life of the gearbox. Utility Model Content

[0003] The technical problem to be solved by the present invention is: in order to solve the problem that the existing lubricating oil is directly injected into the outer shell and splashes the oil to the required position during gear transmission, while preventing iron chips and the like from being deposited at the bottom of the outer shell, causing the iron chips in the oil to be brought into the transmission parts and accumulate between the parts for a long time, causing the parts to be unable to operate normally and reducing the service life of the gear box, a central water outlet gear box with lubrication protection function is now provided.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a central water outlet gearbox with lubrication and protection function, comprising an outer shell and a core shaft for central water outlet, the upper end and the lower end of the core shaft are rotatably mounted on the outer shell through a first bearing and a second bearing respectively, the outer shell is provided with a driving mechanism for driving the core shaft to rotate, the outer shell is provided with an oil delivery hole and an oil outlet hole, one end of the oil delivery hole extends inward from the outer peripheral wall of the outer shell to the first bearing at the upper end, and one end of the oil outlet hole extends inward from the outer peripheral wall of the outer shell to the second bearing at the lower end, the cavity body has a sedimentation area and a lubrication area arranged in the sedimentation area, the lower bottom surface of the lubrication area is higher than the lower bottom surface of the sedimentation area, and the core shaft is located in the lubrication area. Compared with the existing technology, this solution sets the core shaft in the lubrication area, and the lower bottom surface of the lubrication area is higher than the lower bottom surface of the deposition area, so as to ensure that the oil in the deposition area overflows to the core shaft and then lubricates the core shaft. The oil input from the oil delivery hole lubricates the first bearing, then enters the cavity to lubricate the components in the cavity, and then the oil accumulates in the deposition area. As the oil increases, the liquid level of the oil gradually rises and overflows to the lubrication area, the oil enters the second bearing and lubricates it, and then is discharged through the oil outlet.

[0005] To better drain the oil from the cavity, some embodiments preferably further include an oil pump disposed on the outer shell, wherein the input end of the oil pump is connected to the oil outlet. By disposing the oil pump on the outer shell, the oil pump extracts the oil from the second bearing and delivers it to the oil cooling mechanism of the machine tool.

[0006] To better collect iron chips, in some preferred embodiments, the drive mechanism and the mandrel are connected to each other via a gear set, with the meshing portion of the gear set located within the settling area. By locating the meshing portion of the gear set within the settling area, iron chips from the worn gear set fall directly into the settling area, preventing them from entering the lubrication area and facilitating their collection.

[0007] In some preferred embodiments, the outer shell includes a lower shell and an upper cover plate covering the lower shell.

[0008] In order to facilitate the transportation of the gearbox, in some preferred embodiments, the outer shell is provided with a lifting lug.

[0009] In order to better discharge the iron filings from the deposition area, in some preferred embodiments, a magnetic bar is detachably mounted on the outer shell, and the magnetic bar is located on the lower bottom surface of the deposition area. The magnetic bar is arranged on the outer shell to attract the iron filings, and the magnetic bar can be removed to discharge some of the iron filings from the outer shell.

[0010] In order to ensure the balance of air pressure inside and outside the cavity, in some preferred embodiments, an exhaust valve communicating with the cavity is provided on the top of the outer shell.

[0011] The beneficial effects of the present invention are as follows: when the present invention is a center-outlet gearbox with a lubrication protection function, the core shaft is arranged in the lubrication area, and the lower bottom surface of the lubrication area is higher than the lower bottom surface of the deposition area, so that the oil in the deposition area is ensured to overflow to the core shaft and then lubricate the core shaft, the oil input from the oil delivery hole lubricates the first bearing, and then enters the cavity to lubricate the parts in the cavity, and then the oil accumulates in the deposition area. As the oil increases, the liquid level of the oil gradually rises and overflows to the lubrication area, the oil enters the second bearing and lubricates it, and then is discharged through the oil outlet, avoiding the existing lubricating oil being directly injected into the outer shell, and driving the oil to splash to the required position during gear transmission, and at the same time making it impossible for iron filings and the like at the bottom of the outer shell to be deposited, resulting in the iron filings in the oil being brought into the transmission parts, which will be accumulated between the parts for a long time, causing the parts to be unable to operate normally, thereby reducing the service life of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is the main view of the utility model;

[0015] Figure 3 It is a left view of the utility model;

[0016] Figure 4 It is a top view of the utility model;

[0017] Figure 5 It is a bottom view of the utility model;

[0018] Figure 6 yes Figure 2 Middle AA section view;

[0019] Figure 7 yes Figure 2 Middle BB cross-section;

[0020] Figure 8 yes Figure 4 Middle CC section view;

[0021] Figure 9 It is a three-dimensional structural schematic diagram of the lower shell of the utility model.

[0022] In the figure: 1. outer shell, 2. cavity, 3. core shaft, 4. first bearing, 5. second bearing, 6. driving mechanism, 7. oil delivery hole, 8. oil outlet hole, 9. sedimentation area, 10. lubrication area, 11. oil pump, 12. lower shell, 13. upper cover plate, 14. lifting ear, 15. magnetic rod, 16. exhaust valve, 17. first gear, 18. second gear. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the following embodiments:

[0024] The present invention is not limited to the following specific embodiments. Based on the disclosure of this invention, a person skilled in the art can adopt a variety of other specific embodiments to implement the present invention. Any simple changes or modifications made to the design structure and concept of this invention fall within the scope of protection of this invention. It should be noted that the embodiments and features of the embodiments of this invention can be combined with each other unless there is a conflict.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] like Figure 1-9 As shown, a center water outlet gearbox with lubrication protection function includes an outer shell 1, a core shaft 3 and an oil pump 11. The core shaft 3 is provided with a through hole for center water outlet along its axial direction. The upper end of the core shaft 3 is rotatably mounted on the outer shell 1 through a first bearing 4, and the lower end of the core shaft 3 is rotatably mounted on the outer shell 1 through a second bearing 5. The outer shell 1 is provided with a driving mechanism 6, which is used to drive the core shaft 3 to rotate. The upper end of the outer shell 1 is provided with an oil delivery hole 7, the lower end of the outer shell 1 is provided with an oil outlet hole 8, and the oil delivery hole 7 is provided with an oil outlet hole 8. One end of the oil outlet hole 8 extends inward from the outer peripheral wall of the outer shell 1 to the first bearing 4 at the upper end, and one end of the oil outlet hole 8 extends inward from the outer peripheral wall of the outer shell 1 to the second bearing 5 at the lower end. The cavity 2 is provided with a deposition area 9, and the deposition area 9 is provided with a lubrication area 10. The lower bottom surface of the lubrication area 10 is higher than the lower bottom surface of the deposition area 9. The core shaft 3 is located in the lubrication area 10, that is, the first bearing 4 is located on the upper top surface of the lubrication area 10, and the second bearing 5 is located on the lower bottom surface of the lubrication area 10. The input end of the oil pump 11 is connected to the oil outlet hole 8.

[0028] The driving mechanism 6 and the core shaft 3 are connected to each other through a gear set. The driving mechanism 6 can be a servo motor or a stepper motor, etc. The meshing part of the gear set is located in the deposition area 9, that is, a first gear 17 is installed on the core shaft 3, and a second gear 18 is installed on the driving mechanism 6. The first gear 17 and the second gear 18 are meshed with each other, and the meshing part of the first gear 17 and the second gear 18 is located in the deposition area 9.

[0029] The outer shell 1 includes a lower shell 12 and an upper cover plate 13 covering the lower shell 12. The lower shell 12 and the upper cover plate 13 are fixedly connected by screws. A lifting ear 14 is provided on the outer peripheral wall of the outer shell 1. A magnetic rod 15 is threadedly connected to the lower shell 12 of the outer shell 1 to realize the detachable connection of the magnetic rod 15 to the outer shell 1. The magnetic rod 15 is located on the lower bottom surface of the deposition area 9. The upper cover plate 13 on the top of the outer shell 1 is provided with an exhaust valve 16 connected to the cavity 2.

[0030] When the above-mentioned central water-discharge gearbox with lubrication protection function is in use, the external lubricating oil is input into the first bearing 4 at the upper end of the core shaft 3 through the oil delivery hole 7, and the lubricating oil lubricates the first bearing 4. The lubricated oil falls to the first gear 17 and the second gear 18 and lubricates them. The lubricated oil falls into the sedimentation area 9, and the sedimentation area 9 deposits the lubricating oil after lubrication, and deposits iron filings and the like at the bottom, which greatly reduces the entry of iron filings into the second bearing 5 and reduces the impact on the second bearing 5. At the same time, the meshing part of the first gear 17 and the second gear 18 is placed in the sedimentation area 9, which reduces the risk of iron filings entering the second bearing 5, ensuring that the second bearing 5 runs stably and reliably, and improving The service life of the equipment is prolonged, the maintenance cycle is extended, and the maintenance cost is reduced. Through the continuous delivery of lubricating oil, the liquid level of the lubricating oil in the deposition area 9 continues to rise until the lubricating oil overflows to the lubrication area 10 and lubricates the second bearing 5. The oil at the second bearing 5 is extracted by the oil pump 11 and transported to the oil cooling mechanism of the machine tool. In this way, the lubricating oil is continuously circulated and delivered. The lifting lug 14 facilitates the transportation of the gear box. At the same time, the gear box will heat up inside during operation, resulting in the pressure inside the cavity 2 being different from the pressure outside the gear box. In order to balance the pressure inside and outside the gear box, an exhaust valve 16 is installed on the top of the gear box to discharge the internal high pressure to the outside to ensure the pressure difference between the inside and outside of the gear box is balanced.

[0031] The above-described preferred embodiments of the present invention are intended as a guide. Based on the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A center-discharge gearbox with a lubrication protection function, comprising an outer shell (1) and a core shaft (3) for center-discharge, wherein the upper end and the lower end of the core shaft (3) are rotatably mounted on the outer shell (1) via a first bearing (4) and a second bearing (5), respectively, and a driving mechanism (6) for driving the core shaft (3) to rotate is provided on the outer shell (1), characterized in that: The outer shell (1) is provided with an oil delivery hole (7) and an oil outlet hole (8), one end of the oil delivery hole (7) extends inward from the outer peripheral wall of the outer shell (1) to the first bearing (4) at the upper end, and one end of the oil outlet hole (8) extends inward from the outer peripheral wall of the outer shell (1) to the second bearing (5) at the lower end. The cavity (2) has a deposition area (9) and a lubrication area (10) arranged in the deposition area (9), the lower bottom surface of the lubrication area (10) is higher than the lower bottom surface of the deposition area (9), and the core shaft (3) is located in the lubrication area (10).

2. The central water outlet gearbox with lubrication protection function according to claim 1, characterized in that: It also includes an oil pump (11) arranged on the outer shell (1), and the input end of the oil pump (11) is connected to the oil outlet hole (8).

3. The central water outlet gearbox with lubrication and protection function according to claim 1, characterized in that: The driving mechanism (6) and the core shaft (3) are connected to each other through a gear set, and the meshing portion of the gear set is located in the deposition area (9).

4. The central water outlet gearbox with lubrication and protection function according to claim 1, characterized in that: The outer shell (1) comprises a lower shell (12) and an upper cover plate (13) covering the lower shell (12).

5. The central water outlet gearbox with lubrication and protection function according to claim 1, characterized in that: The outer shell (1) is provided with a lifting lug (14).

6. The central water outlet gearbox with lubrication and protection function according to claim 1, characterized in that: A magnetic rod (15) is detachably mounted on the outer shell (1), and the magnetic rod (15) is located on the lower bottom surface of the deposition area (9).

7. The central water outlet gearbox with lubrication and protection function according to claim 1, characterized in that: An exhaust valve (16) communicating with the cavity (2) is provided on the top of the outer shell (1).

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