Medical tower with self-lubricating function

Abstract

This utility model relates to a medical pendant with self-lubricating function, belonging to the field of medical device technology. It solves the problem of inadequate lubrication caused by bearings detaching from lubricating oil during operation in existing medical pendants. This utility model includes a drive mechanism, which comprises a shaft and an oil reservoir ring. An oil inlet hole is provided along the axial direction of the shaft, penetrating at least one end of the shaft. An oil distribution hole is provided along the radial direction of the shaft, communicating with the oil inlet hole. The oil reservoir ring is located at the end of the oil inlet hole near the lubricating oil. A height difference exists between the inner wall of the oil reservoir ring at the end furthest from the shaft and the inner wall of the oil inlet hole, forming an oil reservoir. After the shaft detaches from the lubricating oil, under the action of centrifugal force, the lubricating oil in the oil reservoir flows out through the oil distribution hole and lubricates the rolling bearings mounted on the shaft, achieving uninterrupted continuous lubrication of the rolling bearings and ensuring smooth reciprocating lifting and lowering of the medical pendant's cantilever.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a medical pendant with self-lubricating function. Background Technology

[0002] Medical pendant towers are a new type of auxiliary medical equipment that has been developed in recent years for use in hospital settings such as ICU wards and operating rooms. They provide centralized solutions for medical gas input, power distribution, network transmission, negative pressure suction, and exhaust gas emission.

[0003] When adjusting the position and supporting equipment, medical pendant towers require stable transmission and a large load capacity. Therefore, planetary gearboxes are usually used as one of the transmission mechanisms of the pendant tower to ensure flexible operation and safe use.

[0004] However, in some operating environments, the bearings in the planetary gearbox need to operate continuously. However, in the existing planetary gearboxes, the lubricating oil level is lower than the center line of the sun gear. Therefore, when the planet carrier drives multiple bearings to rotate, the bearings that rotate to the top are not submerged in lubricating oil, resulting in inadequate lubrication. This can easily lead to the bearings burning out due to overheating, making the pendant unable to operate normally and seriously affecting the surgical procedure or the treatment of ICU patients. Utility Model Content

[0005] Based on the above analysis, the present invention aims to provide a medical pendant with self-lubricating function to solve the problem of inadequate lubrication caused by bearings detaching from lubricating oil during the operation of existing medical pendants.

[0006] The objective of this utility model is mainly achieved through the following technical solutions:

[0007] A medical pendant with self-lubricating function includes a drive mechanism, the drive mechanism including a shaft and an oil reservoir ring, an oil inlet hole is provided along the axial direction of the shaft, the oil inlet hole penetrates at least one end of the shaft, and an oil distribution hole is provided along the radial direction of the shaft, the oil distribution hole communicating with the oil inlet hole;

[0008] The oil storage ring is located at the end of the oil inlet near the lubricating oil. The inner wall of the end of the oil storage ring away from the shaft has a height difference with the inner wall of the oil inlet, so that the oil storage ring and the oil inlet form an oil storage tank.

[0009] Furthermore, the drive mechanism also includes a retaining ring for limiting the oil reservoir ring, the retaining ring being disposed on the outer side of the oil reservoir ring; and / or,

[0010] The oil storage ring is provided with a flared hole, and the larger end of the flared hole faces the end of the shaft.

[0011] Furthermore, the oil distribution holes are provided in multiple manner, and the multiple oil distribution holes are evenly arranged around the axial direction of the shaft.

[0012] Furthermore, the oil distribution hole includes a first hole and a second hole, wherein the flow cross-section of the first hole is smaller than that of the second hole.

[0013] Furthermore, one end of the first hole is connected to the oil storage tank, and the other end is connected to one end of the second hole, while the other end of the second hole is connected to the outside of the shaft.

[0014] Furthermore, the drive mechanism also includes a filter screen, which is disposed at the oil outlet end of the oil distribution hole or the oil outlet end of the second hole.

[0015] Furthermore, it also includes supports, fixed arms, cantilever arms, booms, tower heads, and pallets;

[0016] The upper end of the fixed arm is fixedly connected to the lower end of the bracket, the drive mechanism is installed at the lower end of the fixed arm, one end of the cantilever is connected to the drive mechanism, the other end of the cantilever is hinged to the upper end of the boom, the upper end of the tower head is connected to the lower end of the boom, and the tray is connected to the lower end of the tower head.

[0017] Furthermore, the drive mechanism also includes a housing and a planetary carrier, the planetary carrier being connected to the shaft, and the end of the cantilever being hinged to the housing.

[0018] Furthermore, the drive mechanism also includes a swing assembly, which includes a first connecting rod and a second connecting rod. The first connecting rod is a bent rod, with one end of the first connecting rod perpendicular to the output shaft of the planetary carrier and the other end inclined toward the extension line of the output shaft of the planetary carrier.

[0019] Furthermore, one end of the first connecting rod is connected to the output shaft of the planetary carrier, the other end of the first connecting rod is fixedly connected to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the end of the cantilever.

[0020] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0021] (1) The drive mechanism of this utility model has an axial oil inlet hole and a radial oil distribution hole on its shaft. The oil distribution hole is connected to the oil inlet hole. An oil storage ring is installed at the end of the oil inlet hole. The inner wall of the oil storage ring is higher than the inner wall of the oil inlet hole, forming a height difference, so that the oil storage ring and the oil inlet hole form an oil storage tank that can store lubricating oil. When the shaft rotates into the lubricating oil, the lubricating oil enters the oil storage tank through the oil inlet hole. As the rotating shaft gradually leaves the lubricating oil, under the action of centrifugal force, the lubricating oil in the oil storage tank flows out through the oil distribution hole and lubricates the rolling bearing installed on the shaft. This realizes uninterrupted continuous lubrication of the rolling bearing, reliably ensures the operation of the rolling bearing, ensures the service life of the rolling bearing, and thus ensures that the cantilever of the medical pendant can smoothly reciprocate and rise and fall, avoiding the problem of bearing burnout due to lack of lubricating oil in the gearbox bearing.

[0022] (2) The oil distribution hole of this utility model is set as a stepped hole structure, and the flow area of ​​the part directly connected to the oil storage tank is smaller than the flow area of ​​the other part, so that the lubricating oil is atomized. The atomized lubricating oil can form tiny oil droplets, which can more evenly cover the surface that needs lubrication. This structure can make the lubricating oil more evenly distributed, enhance the penetration performance of the lubricating oil, improve the heat dissipation performance, reduce the resistance between components, and reduce the wear between components.

[0023] (3) The present invention provides a filter screen at the oil outlet end of the oil distribution hole or the oil outlet end of the second hole. The filter screen can cut the lubricating oil and separate it into smaller droplets, which further improves the lubrication effect.

[0024] (4) The oil storage ring of this utility model is provided with a horn hole. The large end of the horn hole faces the end of the shaft. When the shaft is in the lubricating oil, the lubricating oil can quickly enter from the large end of the horn hole, forming a pouring structure from large to small, forming a rapid pouring function, and ensuring rapid oil storage in a short time.

[0025] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0026] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0027] Figure 1 This is a schematic diagram of the structure of a medical pendant with self-lubricating function according to specific embodiment 1;

[0028] Figure 2 This is a schematic diagram of the planetary gearbox in specific embodiment 1;

[0029] Figure 3 This is a side view of the planetary gear in specific embodiment 1;

[0030] Figure 4 For specific embodiment 1 Figure 2 Enlarged diagram of part A in the middle;

[0031] Figure 5 This is a schematic diagram of the connection structure of the shaft, oil reservoir ring, and retaining ring for the bore in specific embodiment 1;

[0032] Figure 6 This is a schematic diagram of the connection structure of the swing assembly, cantilever, outer shell and planetary carrier in specific embodiment 1;

[0033] Figure 7 This is a schematic diagram of the connection structure of the shaft, oil reservoir ring, and retaining ring for the bore in specific embodiment 2;

[0034] Figure 8 This is one of the schematic diagrams of the connection structure between the shaft and the filter screen in specific embodiment 3;

[0035] Figure 9 This is the second schematic diagram of the connection structure between the shaft and the filter screen in specific embodiment 3;

[0036] Figure 10 This is a schematic diagram of the filter structure in specific embodiment 3.

[0037] Figure label:

[0038] 1-Drive mechanism; 11-Shaft; 111-Oil inlet; 112-Oil reservoir; 113-Oil distribution hole; 1131-First hole; 1132-Second hole; 114-Annular groove; 12-Oil reservoir ring; 121-Bell hole; 13-Rolling bearing; 14-Hole retaining ring; 15-Housing; 16-Planet carrier; 17-Planet gear; 18-Sun gear; 19-Oscillating assembly; 191-First connecting rod; 192-Second connecting rod; 10-Filter screen; 2-Bracket; 3-Fixed arm; 4-Cantilever; 41-Groove; 5-Hanging arm; 6-Tower head; 7-Pattern. Detailed Implementation

[0039] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0040] Example 1

[0041] A specific embodiment of this utility model, combined with Figure 2 , Figure 4 and Figure 5 As shown, a medical pendant with self-lubricating function is disclosed, including a drive mechanism 1. The drive mechanism 1 includes a shaft 11 and an oil reservoir ring 12. An oil inlet hole 111 is provided along the axial direction of the shaft 11, and the oil inlet hole 111 penetrates at least one end of the shaft 11. The oil reservoir ring 12 is located at the end of the oil inlet hole 111 near the lubricating oil. There is a height difference between the inner wall of the oil reservoir ring 12 away from the shaft 11 and the inner wall of the oil inlet hole 111, so that the lubricating oil can be stored in the oil reservoir 112 formed by the oil reservoir ring 12 and the oil inlet hole 111. An oil distribution hole 113 is provided along the radial direction of the shaft 11, and the oil distribution hole 113 communicates with the oil inlet hole 111.

[0042] Compared with the prior art, the medical pendant with self-lubricating function provided in this embodiment has an axial oil inlet hole 111 and a radial oil distribution hole 113 on the shaft 11 of the drive mechanism 1. The oil distribution hole 113 is connected to the oil inlet hole 111. An oil storage ring 12 is installed at the end of the oil inlet hole 111. The inner wall of the oil storage ring 12 is higher than the inner wall of the oil inlet hole 111, forming a height difference, so that the oil storage ring 12 and the oil inlet hole 111 form an oil storage tank 112 that can store lubricating oil. When shaft 11 rotates into the lubricating oil, the lubricating oil enters the oil reservoir 112 through the oil inlet 111. As shaft 11 gradually disengages from the lubricating oil, under the action of centrifugal force, the lubricating oil in the oil reservoir 112 flows out through the oil distribution hole 113 and lubricates the rolling bearing 13 mounted on shaft 11. This achieves continuous lubrication of the rolling bearing 13, reliably ensuring its operation and service life. Consequently, it ensures that the cantilever 4 of the medical pendant can smoothly reciprocate and rise, preventing the gearbox bearing from burning out due to lack of lubricating oil.

[0043] Preferably, such as Figure 5 As shown, the oil inlet hole 111 is opened along the axis of shaft 11. The oil reservoir ring 12 is a rotating structure.

[0044] Considering the installation of the oil reservoir ring 12, such as Figure 4 and Figure 5 As shown, the drive mechanism 1 also includes a retaining ring 14, which is located on the outside of the oil reservoir ring 12 and is used to limit the oil reservoir ring 12. The retaining ring 14 is connected to the end of the oil inlet hole 111. Using the retaining ring 14 to limit the oil reservoir ring 12 allows for quick assembly and disassembly of the oil reservoir ring 12. It should be noted that the oil reservoir ring 12 can also be assembled with the shaft 11 in other ways, such as interference fit, screw connection, welding, etc.

[0045] To increase the rate at which lubricating oil is poured in, such as Figure 4 and Figure 5As shown, the oil reservoir ring 12 is provided with a flared hole 121, with the larger end of the flared hole 121 facing the end of the shaft 11. The flared hole 121 is coaxial with the oil inlet hole 111. When the shaft 11 is in the lubricating oil, the lubricating oil can quickly enter from the larger end of the flared hole 121, forming a pouring structure from large to small, which forms a rapid pouring function and ensures rapid oil storage in a short time.

[0046] To facilitate the installation of the retaining ring 14, the oil reservoir ring 12 is positioned at the upper limit of the axial direction of the shaft 11, such as... Figure 4 and Figure 5 As shown, the oil reservoir ring 12 and the oil inlet hole 111 are limited by a stepped design. Understandably, an annular groove 114 for mounting the retaining ring 14 is provided at the end of the oil inlet hole 111.

[0047] To ensure uniform flow of lubricating oil, multiple oil distribution holes 113 are provided, and these holes are evenly distributed around the axial direction of the shaft 11. Since the shaft 11 is equipped with two rolling bearings 13, the oil distribution holes 113 are located between the two rolling bearings 13.

[0048] Combination Figure 1 , Figure 2 and Figure 3 As shown, the drive mechanism 1 also includes a housing 15, a planetary carrier 16, planetary gears 17, and a sun gear 18. The planetary carrier 16, planetary gears 17, sun gear 18, shaft 11, rolling bearings 13, and a gear ring (not shown in the figure) and corresponding connecting parts form a planetary gearbox. The housing 15 houses the planetary gearbox and a motor (not shown in the figure) that provides power. The rolling bearings 13 are mounted on the shaft 11, and the planetary gears 17 are sleeved on the rolling bearings 13 and mesh with the gear ring and sun gear 18 simultaneously. The planetary carrier 16 is connected to the shaft 11. It should be noted that the structure of the planetary gearbox (planetary gear mechanism) is mature existing technology and is not an improvement of this embodiment; only a simple description of its structure is given here.

[0049] The sun gear 18 of the planetary gearbox serves as the power input, and the planet carrier 16 serves as the power output. The output of the motor is connected to the sun gear 18, and the ring gear is fixed inside the housing 15. The motor drives the sun gear 18 to rotate, and power is input from the sun gear 18, reduced in speed by the planetary gear reducer, and then output by the planet carrier 16. The rolling bearings 13 and gears inside the planetary gearbox are lubricated by gear oil. Because it operates continuously, the rolling bearings 13 require continuous lubrication.

[0050] like Figure 1As shown, the medical pendant also includes a support 2, a fixed arm 3, a cantilever 4, a boom 5, a tower head 6, and a tray 7. The support 2 can be installed on the ceiling. Exemplarily, the support 2 is connected to the ceiling by fixing bolts. The upper end of the fixed arm 3 is fixedly connected to the lower end of the support 2. The drive mechanism 1 is installed at the lower end of the fixed arm 3, i.e., the lower end of the fixed arm 3 is connected to the outer casing 15. One end of the cantilever 4 is connected to the drive mechanism 1, and the other end of the cantilever 4 is hinged to the upper end of the boom 5. The upper end of the tower head 6 is connected to the lower end of the boom 5, and the tray 7 is connected to the lower end of the tower head 6. The drive mechanism 1 can drive the cantilever 4 to swing up and down, thereby causing the tower head 6 and tray 7 to rise and fall via the boom 5.

[0051] Since the planetary carrier 16 outputs rotational motion, it is necessary to convert the rotational motion output by the planetary carrier 16 into vertical oscillation. Therefore, the drive mechanism 1 also includes an oscillation component 19, such as... Figure 6 As shown, the swing assembly 19 includes a first connecting rod 191 and a second connecting rod 192. The first connecting rod 191 is a bent rod. One end of the first connecting rod 191 is connected to the output shaft of the planetary carrier 16, and the other end is fixedly connected to one end of the second connecting rod 192. The other end of the second connecting rod 192 is hinged to the end of the cantilever 4. The cantilever 4 is also hinged to the outer shell 15. The first section of the first connecting rod 191 is perpendicular to the output shaft of the planetary carrier 16, and the other end is inclined to the extension line of the output shaft of the planetary carrier 16.

[0052] When the output shaft of the planetary carrier 16 rotates, it drives the first connecting rod 191 to rotate. The first connecting rod 191 then drives the second connecting rod 192 to rotate in a virtual cone shape, with the hinged end of the second connecting rod 192 and the cantilever 4 as the apex, and the length of the second connecting rod 192 as the generatrix. Since the second connecting rod 192 is hinged to the cantilever 4, and the cantilever 4 is hinged to the outer casing 15, the cantilever 4 swings vertically under the influence of the second connecting rod 192.

[0053] Preferably, such as Figure 6 As shown, a groove 41 is provided at the end of the cantilever 4, and the end of the second connecting rod 192 is located in the groove 41 and rotatably connected to the cantilever 4. Exemplarily, the cantilever 4 and the second connecting rod 192 are connected by a pin. The groove 41 needs to be long enough to avoid interference during the movement of the second connecting rod 192.

[0054] Example 2

[0055] Another specific embodiment of this example is, for example... Figure 7As shown, a medical pendant with self-lubricating function is disclosed. The difference from Embodiment 1 is that, to further improve the lubrication effect, the oil distribution hole 113 is a stepped hole, specifically including a first hole 1131 and a second hole 1132. One end of the first hole 1131 is connected to the oil storage tank 112, and the other end is connected to one end of the second hole 1132. The other end of the second hole 1132 is connected to the outer side of the shaft 11. The flow cross-section of the first hole 1131 is smaller than that of the second hole 1132. It should be noted that the fluid cross-section is the cross-section of the first hole 1131 and the second hole 1132, which is a cross-section perpendicular to the length direction of the first hole 1131 and the second hole 1132.

[0056] According to the Venturi principle, when fluid flows from the first hole 1131 into the second hole 1132, the fluid pressure decreases, and the gas solubility decreases, causing bubbles in the fluid to precipitate and ultimately form atomized lubricating oil. It should be noted that lubricating oil itself and its additives typically do not contain oxygen. However, during storage, transportation, or use, air can easily come into contact with the lubricating oil, and oxygen in the air can dissolve into the oil.

[0057] Preferably, the first hole 1131 and the second hole 1132 are both cylindrical holes, and they are concentrically arranged, with the diameter of the first hole 1131 being smaller than the diameter of the second hole 1132.

[0058] In this embodiment, the oil distribution hole 113 is configured with a stepped hole structure, and the flow area of ​​the part directly connected to the oil reservoir 112 is smaller than that of the other part, allowing the lubricating oil to be atomized. The atomized lubricating oil can form tiny oil droplets, which can more evenly cover the surface requiring lubrication. The oil mist can enter various tiny gaps and friction parts, ensuring that all friction surfaces are lubricated in a timely and sufficient manner compared to traditional oil bath lubrication or drip lubrication. The atomized lubricating oil can better penetrate into the tiny gaps of the friction pair, forming an effective lubricating film on the surface of the friction pair and reducing wear. When the atomized lubricating oil comes into contact with the high-temperature friction surface, its increased surface area allows it to absorb and dissipate the heat generated by friction more quickly, providing a good cooling effect. The atomized lubricating oil can form a thinner and more uniform oil film on the friction surface, which helps to reduce the coefficient of friction and reduce the resistance between moving parts. Oil mist lubrication can make the bearing rotate more smoothly, reduce energy consumption, and improve the operating efficiency of the equipment. After atomization, lubricating oil can form a continuous and uniform lubricating film on the friction surface, which can effectively separate two relatively moving surfaces, reduce direct metal-to-metal contact, and thus reduce wear.

[0059] Example 3

[0060] Another specific embodiment of this utility model is as follows: Figure 8 , Figure 9 and Figure 10As shown, a medical pendant with self-lubricating function is disclosed. Based on embodiment 1 or embodiment 2, the drive mechanism 1 further includes a filter screen 10. The filter screen 10 is disposed at the oil outlet end of the oil distribution hole 113 or the oil outlet end of the second hole 1132. The filter screen 10 can cut the lubricating oil and separate the lubricating oil into smaller droplets, which further helps to improve the lubrication effect.

[0061] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A medical pendant with self-lubricating function, characterized in that, The device includes a drive mechanism (1), which includes a shaft (11) and an oil reservoir ring (12). An oil inlet hole (111) is provided along the axial direction of the shaft (11), and the oil inlet hole (111) passes through at least one end of the shaft (11). An oil distribution hole (113) is provided along the radial direction of the shaft (11), and the oil distribution hole (113) communicates with the oil inlet hole (111). The oil storage ring (12) is located at the end of the oil inlet (111) near the lubricating oil. The inner wall of the end of the oil storage ring (12) away from the shaft (11) has a height difference with the inner wall of the oil inlet (111), so that the oil storage ring (12) and the oil inlet (111) form an oil storage chamber (112).

2. The medical pendant tower with self-lubricating function according to claim 1, characterized in that, The drive mechanism (1) further includes a retaining ring (14) for limiting the oil reservoir ring (12), the retaining ring (14) being disposed on the outer side of the oil reservoir ring (12); and / or, The oil storage ring (12) is provided with a horn hole (121), and the larger end of the horn hole (121) faces the end of the shaft (11).

3. The medical pendant tower with self-lubricating function according to claim 1, characterized in that, The oil distribution holes (113) are provided in multiple ways, and the multiple oil distribution holes (113) are evenly arranged around the axis of the shaft (11).

4. The medical pendant with self-lubricating function according to any one of claims 1-3, characterized in that, The oil distribution hole (113) includes a first hole (1131) and a second hole (1132), wherein the flow cross section of the first hole (1131) is smaller than the flow cross section of the second hole (1132).

5. The medical pendant tower with self-lubricating function according to claim 4, characterized in that, One end of the first hole (1131) is connected to the oil storage tank (112), and the other end is connected to one end of the second hole (1132). The other end of the second hole (1132) is connected to the outside of the shaft (11).

6. The medical pendant tower with self-lubricating function according to claim 5, characterized in that, The drive mechanism (1) also includes a filter screen (10), which is disposed at the oil outlet end of the oil distribution hole (113) or the oil outlet end of the second hole (1132).

7. The medical pendant tower with self-lubricating function according to any one of claims 1-3 and 5-6, characterized in that, It also includes a support (2), a fixed arm (3), a cantilever (4), a boom (5), a tower head (6), and a tray (7); The upper end of the fixed arm (3) is fixedly connected to the lower end of the bracket (2), the drive mechanism (1) is installed at the lower end of the fixed arm (3), one end of the cantilever (4) is connected to the drive mechanism (1), the other end of the cantilever (4) is hinged to the upper end of the boom (5), the upper end of the tower head (6) is connected to the lower end of the boom (5), and the tray (7) is connected to the lower end of the tower head (6).

8. The medical pendant tower with self-lubricating function according to claim 7, characterized in that, The drive mechanism (1) also includes a housing (15) and a planetary carrier (16), the planetary carrier (16) being connected to the shaft (11), and the end of the cantilever (4) being hinged to the housing (15).

9. The medical pendant tower with self-lubricating function according to claim 8, characterized in that, The drive mechanism (1) further includes a swing assembly (19), which includes a first connecting rod (191) and a second connecting rod (192). The first connecting rod (191) is a bent rod, with one end of the first connecting rod (191) perpendicular to the output shaft of the planet carrier (16) and the other end inclined to the extension line of the output shaft of the planet carrier (16).

10. The medical pendant tower with self-lubricating function according to claim 9, characterized in that, One end of the first connecting rod (191) is connected to the output shaft of the planetary carrier (16), the other end of the first connecting rod (191) is fixedly connected to one end of the second connecting rod (192), and the other end of the second connecting rod (192) is hinged to the end of the cantilever (4).

Images