CN111503164A

CN111503164A - Bearing device and shaft rotation apparatus

Info

Publication number: CN111503164A
Application number: CN201910088899.XA
Authority: CN
Inventors: 黄国轩
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-08-07

Abstract

A bearing device and a shaft rotating apparatus, the bearing device is adapted to allow a shaft body to be rotatably mounted, and includes a base, a bearing unit including at least one bearing, a first collar, a ring seat, and a second collar. The base comprises a seat space, and a first opening and a second opening which are communicated with the seat space. The bearing unit is used for the rod body to rotatably penetrate and extend. The first sleeve ring can be synchronously rotated and sleeved around the rod body. The ring seat and the second sleeve ring are arranged on one side of the bearing unit opposite to the first sleeve ring. The base has one hole for oil to flow through the first sleeve ring, the ring seat and the second sleeve ring to reach the heat exchange and cooling effect and avoid overheat and heat expansion of the rod body, so as to raise the machining precision.

Description

Bearing device and shaft rotation apparatus

Technical Field

The present invention relates to a bearing device and a shaft rotating apparatus, and more particularly, to a bearing device in which a rod is rotatably installed, and a shaft rotating apparatus including the rod and the bearing device.

Background

In the known machining technology, a workpiece is machined by mounting the workpiece on a worktable, the worktable is mounted on a screw of a machine tool, the screw is mounted on a bearing and is driven to rotate by a motor, and when the screw rotates, the worktable and the workpiece can be driven to move linearly and simultaneously machine the workpiece by a proper machine tool. However, in the machining process, the continuous rotation of the screw can cause the joint of the screw and the bearing to generate heat due to the long-time rotation friction, so that the temperature of the screw is increased, and the screw made of metal can generate thermal expansion and thermal elongation after being heated, so that the positioning precision error is caused, and the machining precision and the machining error are further influenced. For a workpiece requiring high precision, the above-mentioned problems of expansion and elongation due to heat are still to be solved.

Disclosure of Invention

The invention aims to provide a bearing device and shaft rotating equipment which can provide cooling and heat dissipation effects and improve processing precision.

The bearing device of the present invention is adapted to rotatably mount a rod body, and includes: the bearing comprises a base and a bearing unit, wherein the base comprises an inner circumferential surface for defining a seat space, an outer circumferential surface opposite to the inner circumferential surface, a first opening and a second opening, the first opening and the second opening penetrate from the outer circumferential surface to the inner circumferential surface and are communicated with the seat space, and oil can pass through the first opening and the second opening; the bearing unit is installed in the seat space of the base and is used for the rod body to rotatably penetrate through, and the bearing unit is provided with a first end part and a second end part which are spaced left and right. The bearing device also comprises a first lantern ring, a ring seat and a second lantern ring which can be synchronously and rotatably sleeved around the rod body and is positioned in the ring seat, wherein the first lantern ring is arranged in the seat space of the base and can be synchronously and rotatably sleeved around the rod body, the first lantern ring is positioned on one side of the first end part and comprises an inner ring surface attached to the rod body, an outer ring surface opposite to the inner ring surface, at least one first flow hole which penetrates from the outer ring surface to the inner ring surface and is communicated with the seat space of the base, and a ring groove which is concavely formed on the inner ring surface and is communicated with the at least one first flow hole; the ring seat is non-rotatably mounted in the seat space and located on one side of the second end of the bearing unit, and comprises an inner seat surface, an outer seat surface opposite to the inner seat surface and facing the inner peripheral surface of the base, and at least one second flow hole penetrating from the outer seat surface to the inner seat surface and communicating the first opening with the second opening; one of the first opening and the second opening can be used for injecting oil, so that the oil can flow through the ring seat, the at least one first flow hole and the ring groove of the first lantern ring, the rod body and the bearing unit through the at least one second flow hole and then flow out of the other one of the first opening and the second opening.

In the bearing device of the present invention, the second collar includes an inner annular surface that is attached to the rod body, an outer annular surface that is opposite to the inner annular surface, at least one first flow hole that penetrates from the outer annular surface to the inner annular surface and communicates with the seat space of the base, and an annular groove that is recessed and formed on the inner annular surface and communicates with the at least one first flow hole, and the oil liquid also flows through the at least one first flow hole and the annular groove of the second collar.

In the bearing device, the first sleeve ring and the second sleeve ring both further comprise a surrounding ring part axially extending along the rod body, and a positioning ring part radially protruding from one end of the surrounding ring part.

The bearing device also comprises two oil seals which are respectively sleeved on the surrounding ring part of the first lantern ring and the second lantern ring in a circle mode, and a first O-shaped ring and a second O-shaped ring which are respectively embedded on the inner ring surfaces of the first lantern ring and the second lantern ring, wherein the positions of the first O-shaped ring and the second O-shaped ring respectively correspond to the positions of the positioning ring parts of the first lantern ring and the second lantern ring.

In the bearing device of the present invention, a gap is formed between the outer seat surface of the ring seat and the inner peripheral surface of the base, the gap communicating the seat space and the at least one second flow hole of the ring seat.

In the bearing device of the present invention, a direction in which the at least one first flow hole of the first collar extends through from the outer ring surface toward the inner ring surface is not parallel to a radial direction of the first collar, and a direction in which the at least one first flow hole of the second collar extends through from the outer ring surface toward the inner ring surface is not parallel to a radial direction of the second collar.

The shaft rotating equipment is suitable for being connected with a motor and comprises two spaced bearing devices, a rod body which can be driven by the motor and can be rotatably arranged on the bearing devices, and a mounting seat which is assembled with one of the bearing devices and is used for mounting the motor; each bearing device comprises a base and a bearing unit, wherein the base comprises an inner circumferential surface defining a seat space and an outer circumferential surface opposite to the inner circumferential surface, the bearing unit is installed in the seat space of the base and is used for the rod body to rotatably penetrate through, and the bearing unit is provided with a first end part and a second end part which are spaced left and right. Each bearing device also comprises a first lantern ring, a ring seat and a second lantern ring which can be synchronously and rotatably sleeved around the rod body and is positioned in the ring seat, wherein the first lantern ring is arranged in the seat space of the base and can be synchronously and rotatably sleeved around the rod body, the first lantern ring is positioned at one side of the first end part and comprises an inner ring surface attached to the rod body, an outer ring surface opposite to the inner ring surface, at least one first flow hole which penetrates from the outer ring surface to the inner ring surface and is communicated with the seat space, and a ring groove which is concavely formed on the inner ring surface and is communicated with the at least one first flow hole; the ring seat is non-rotatably mounted in the seat space and located on one side of the second end of the bearing unit, and comprises an inner seat surface, an outer seat surface opposite to the inner seat surface and facing the inner peripheral surface of the base, and at least one second flow hole penetrating from the outer seat surface to the inner seat surface and communicating the first opening with the second opening; the base of at least one of the bearing devices further comprises a first opening which penetrates from the outer peripheral surface to the inner peripheral surface and is communicated with the seat space; the rod body comprises an inner rod surface defining an axially extending rod flow channel, an outer rod surface opposite to the inner rod surface, and a plurality of rod flow holes which are spaced from each other, penetrate from the outer rod surface to the inner rod surface and are communicated with the rod flow channel, and the rod flow holes are communicated with the first flow holes through the annular groove of the first sleeve ring; the mounting seat is combined with the base of one of the bearing devices, and the mounting seat is provided with a through hole communicated with the seat space of the base and a liquid outlet hole communicated with the through hole; the first opening of the base of one of the bearing devices can be used for injecting oil, and the oil can flow to the base of the other of the bearing devices through the rod flow channel of the rod body and flows into the through hole of the mounting seat to flow out from the liquid outlet hole.

The shaft rotating equipment comprises a second sleeve ring, a first sleeve ring and a second sleeve ring, wherein the second sleeve ring comprises an inner ring surface which is attached to the rod body, an outer ring surface which is opposite to the inner ring surface, at least one first flow hole which penetrates from the outer ring surface to the inner ring surface and is communicated with the seat space, and an annular groove which is formed on the inner ring surface in a recessed mode and is communicated with the at least one first flow hole; the rod flow bore communicates with the first flow bore through the first collar and the annular channel of the second collar.

The shaft rotating equipment comprises a base wall, a frame wall extending and combined from the base wall to the base of one of the bearing devices, wherein the frame wall extends to the periphery of the motor and is provided with a through hole and a combining surface attached to the base, and the through hole is provided with a lateral opening formed on the combining surface and communicated with the seat space of the base.

The shaft rotating device comprises a mounting seat and a frame wall, wherein the frame wall extends to the periphery of the motor from the base wall and is combined with the base of one of the bearing devices in an extending mode, the frame wall is provided with a through hole, the through hole extends in the axial direction of the rod body to form a long hole shape, the base wall is provided with a liquid outlet hole, an inner wall surface and an outer wall surface which are spaced, and a ring groove which is recessed from the inner wall surface to the outer wall surface, is communicated between the through hole and the liquid outlet hole and is provided with an inner ring opening penetrating through the inner wall surface, and the mounting seat further comprises a plug cover which is plugged in the base wall and seals the inner ring opening.

The invention has the beneficial effects that: through one of the first opening and the second opening of the base, oil can be injected, and the design of the first lantern ring, the first flow hole of the second lantern ring, the annular groove and the like is matched, so that the oil can flow around the rod body through the first lantern ring, the annular seat and the second lantern ring, the effects of heat exchange and cooling of the rod body are achieved, the problems of overheating, thermal expansion and thermal elongation of the rod body can be avoided, the invention can achieve good cooling and radiating effects, and the processing precision is improved.

Drawings

Other features and effects of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a perspective assembly view showing a first embodiment of an axle turning apparatus of the present invention and a stop block;

FIG. 2 is a right side view of the first embodiment;

FIG. 3 is a front view of the first embodiment;

FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 2;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is an exploded perspective view showing some of the components of the first embodiment;

FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 3;

FIG. 8 is a partial cross-sectional view taken along line 8-8 of FIG. 2;

FIG. 9 is a cross-sectional view similar to FIG. 5, illustrating a variation of the first embodiment in which an annular groove of a first collar and an annular groove of a second collar are enlarged;

fig. 10 is a perspective view of a second embodiment of an axle turning apparatus of the present invention;

FIG. 11 is a right side view of a mount on the left side of the second embodiment in combination with a bearing assembly;

fig. 12 is a cross-sectional view taken along line 12-12 of fig. 11.

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, like elements are represented by like reference numerals.

Referring to fig. 1, 2 and 3, a first embodiment of the shaft rotating apparatus of the present invention includes two left and right spaced mounting seats 1, two bearing devices 2 respectively mounted on the mounting seats 1, a locking seat 4, and a rod body 5 rotatably mounted on the bearing devices 2.

The mounting seats 1 are spaced from each other left and right, and each mounting seat 1 has a horizontal bottom wall 11 and a frame wall 12 extending upward from the bottom wall 11 and used for mounting the corresponding bearing device 2. In this embodiment, the appearance of the mounting base 1 is different, and the structure of the mounting base 1 is not limited in implementation, as long as the bearing device 2 can be mounted. In addition, the mounting base 1 on the left side can be provided with a motor 10, and the motor 10 is used for driving the rod body 5 to rotate.

Referring to fig. 4-6, each bearing device 2 is adapted for rotatably mounting the rod 5 and includes a base 21, a bearing unit 220, a first ring 23, a ring seat 24, a second ring 25, a plurality of oil seals 27, and a screw 28.

The base 21 of each bearing device 2 is fixedly combined with the corresponding mounting seat 1, and the base 21 is fixed and does not rotate. The base 21 includes an inner circumferential surface 211 defining an axially extending seat space 210, an outer circumferential surface 212 opposite to the inner circumferential surface 211 and having a raised and lowered annular surface, and a first opening 213 and a second opening 214 penetrating from the outer circumferential surface 212 to the inner circumferential surface 211 and communicating with the seat space 210. The first opening 213 and the second opening 214 allow for the ingress and egress of an oil for cooling the rod 5. In different applications, the first opening 213 and the second opening 214 may be used as an inlet for oil and an outlet for oil. Therefore, the present invention does not need to limit which of the first opening 213 and the second opening 214 is the inlet and which is the outlet.

The bearing unit 220 is installed in the seat space 210 of the base 21 and through which the rod 5 rotatably passes. The bearing unit 220 includes a plurality of bearings 22 adjacent to each other, and the number of the bearings 22 in this embodiment is two, and may be at least one in implementation. Each bearing 22 is a ball bearing and includes an inner ring seat 221 coupled to the rod 5 in a linkage manner, an outer ring seat 222 surrounding the inner ring seat 221 in a fixed and non-rotatable manner, and a plurality of balls 223 located between the inner ring seat 221 and the outer ring seat 222. The bearing unit 220 formed by the plurality of bearings 22 has a first end 224 and a second end 225 spaced apart from each other in the left-right direction. In this embodiment, the first end 224 is on the left side and the second end 225 is on the right side.

Referring to fig. 5 to 7, the first collar 23 is installed in the seating space 210 of the base 21 and can be synchronously and tightly sleeved around the rod 5 in a rotating manner, and the first collar 23 is located at one side of the first end 224 of the bearing unit 220. The first collar 23 includes a surrounding ring portion 236 extending axially along the rod body 5, a positioning ring portion 237 protruding radially from one end of the surrounding ring portion 236, an inner ring surface 231 formed by the surrounding ring portion 236 and the positioning ring portion 237 and attached to the rod body 5, an outer ring surface 232 opposite to the inner ring surface 231 and formed by the surrounding ring portion 236 and the positioning ring portion 237 and having a step shape, a plurality of first flow holes 233 penetrating from the outer ring surface 232 to the inner ring surface 231, and a ring groove 234 formed in the inner ring surface 231 and communicating with the first flow holes 233. The first fluid hole 233 communicates with the first opening 213 through the seating space 210 of the base 21. Each of the first flow holes 233 extends from the outer annular surface 232 to the inner annular surface 231 in a direction not parallel to the radial direction of the first collar 23, i.e., the extending direction of the first flow holes 233 is offset from the radial direction of the first collar 23.

The ring seat 24 is non-rotatably installed in the seat space 210 and located at the second end 225 side of the bearing unit 220. The ring seat 24 includes an inner seat surface 241 and an outer seat surface 242 opposite to each other, an abutting surface 243 connecting the inner seat surface 241 and the outer seat surface 242 and abutting against the second end 225 of the bearing unit 220, and a plurality of second flow holes 244 penetrating through the inner seat surface 241 and the outer seat surface 242. The outer seat 242 has a contact surface 245 spaced from the contact surface 243 and contacting the inner circumferential surface 211 of the base 21, an inclined surface 246 extending from the periphery of the contact surface 243 toward the contact surface 245 and extending in an annular shape, and a screw surface 247 connecting the contact surface 245 opposite to the inclined surface 246 and screwed with the inner circumferential surface 211 of the base 21. Wherein, an annular gap 240 communicating with the seat space 210 is formed between the inclined surface portion 246 and the inner circumferential surface 211 of the base 21. Each second flow hole 244 extends from the inclined surface portion 246 toward the inner seating surface 241, and is communicated with the seating space 210 of the base 21 and the first opening 213 through the gap 240, and the second flow hole 244 is also communicated with the second opening 214.

The second collar 25 can be synchronously rotated and tightly sleeved around the rod 5 and is installed in the ring seat 24. The second collar 25 is spaced apart from and opposite to the first collar 23 and is located at one side of the second end 225 of the bearing unit 220. The second collar 25 of this embodiment is identical in structure to the first collar 23, except that the left and right directions are opposite in mounting. The second collar 25 also includes a surrounding ring portion 236, a positioning ring portion 237, an inner ring surface 231 and an outer ring surface 232 formed by the surrounding ring portion 236 and the positioning ring portion 237, a plurality of first flow holes 233, and an annular groove 234, and the structure of the second collar 25 will not be further described herein. The first orifice 233 of the second collar 25 communicates with the first opening 213 of the base 21 via the second orifice 244 of the ring seat 24.

The oil seals 27 are respectively sleeved around the surrounding ring portions 236 of the first collar 23 and the second collar 25, so as to prevent oil from flowing out and leaking in non-predetermined directions, and mainly prevent oil from flowing out from the left and right openings of the seating space 210 of the base 21. In addition, in order to achieve better effect of tightening the components and preventing oil leakage, more oil seals 27 and a plurality of O-rings can be installed at appropriate positions according to the present invention. Specifically, the present embodiment is provided with a first O-ring 291 and a second O-ring 292, which are respectively embedded in the grooves of the inner ring 231 of the first collar 23 and the second collar 25, for restraining the oil from leaking out along the outer circumference of the rod 5. The positions of the first O-ring 291 and the second O-ring 292 correspond to the positions of the positioning ring 237 of the first collar 23 and the second collar 25, respectively. A third O-ring 293 is disposed in the groove of the outer surface 242 of the ring 24 to prevent oil leakage.

Referring to fig. 1 and 4, the screw 28 of each bearing device 2 is located at the left end of the base 21 and is screwed around the rod 5. The locking seat 4 is disposed on the right side of the bearing device 2, and the locking seat 4 is screwed around the rod 5 and can cooperate with the screw 28 to fix the right side of the base 21 at a predetermined position. It should be noted that, in the present embodiment, a stop block 3 (fig. 1) is further disposed on one side of the left bearing device 2, the stop block 3 can be locked on the base 21 of the left bearing device 2, and the rod 5 can be held against rotation by two vertically extending stop surfaces 31 thereof, so that the rod 5 cannot rotate freely during the process of locking the locking seat 4 on the rod 5, thereby facilitating the locking operation. Therefore, the function of the stop block 3 is to facilitate the assembly of the present invention, and when the assembly is completed, the stop block 3 can be removed, so that the rod 5 and other related elements can be operated.

Referring to fig. 5 to 7, the rod body 5 extends axially in the left-right direction, and includes an inner rod surface 51 defining an axially extending rod flow channel 50, an outer rod surface 52 opposite to the inner rod surface 51 and having two planar locking plane portions 521, and a plurality of rod flow holes 53 spaced apart from each other and penetrating from the outer rod surface 52 toward the inner rod surface 51 and communicating with the rod flow channel 50. The openings on the left and right sides of the rod flow passage 50 are respectively provided with a plug 55 for plugging. Each of the rod flow holes 53 extends in the radial direction of the rod 5 and communicates the first flow holes 233 of the corresponding first and

second collars

23 and 25.

When the present invention is installed, the outer seat surface 242 of the ring seat 24 is provided with the screw thread surface portion 247, so that the present invention can be fixedly installed in the base 21 by using a screw locking manner. By controlling the degree of locking the ring seat 24, the abutting tightness between the abutting surface 243 and the second end 225 of the bearing unit 220 can be controlled, so that the abutting surface 243 can be tightly abutted against the second end 225 without additional machining and modification, thereby achieving the pre-pressure of the bearing 22. The oil seals 27 may be installed in the base 21 and the ring seat 24, respectively.

When the rod 5 is mounted on the base 21, the first sleeve ring 23 is firstly sleeved on the rod 5, and then the rod 5 and the first sleeve ring 23 are inserted into the seat space 210 and the bearing device 2, so that the first sleeve ring 23 is positioned at the left end of the base 21, and then the second sleeve ring 25 is sleeved on the rod 5 and positioned at the right end of the base 21. Since the present invention can be applied to a machine tool and machine a workpiece, the radially enlarged positioning ring portions 237 of the first collar 23 and the second collar 25 are tightly inserted into the left and right side ends of the base 21, respectively, so as to prevent metal chips generated during machining from being sprayed into the base 21, and prevent the metal chips from affecting the oil flow and cooling effect. In addition, in the process that the rod body 5 extends into the base 21, if the rod body 5 slightly inclines upwards or downwards, the oil seal 27 which is installed in the base 21 in advance can be pressed, so that the oil seal 27 is easy to damage, and the anti-leakage effect is damaged. The radially enlarged positioning ring 237 has the effect of stopping and stabilizing the rod 5 from extending into the base 21 due to the shape of the space for mounting the rod in the base 21, so that the rod 5 can be aligned with the base 21 more straightly, and the oil seal 27 can be prevented from being damaged by upward or downward deviation.

When the first collar 23 is assembled with the second collar 25, the first flow hole 233 can communicate with the rod flow hole 53 through the annular groove 234. It should be noted that the first collar 23 may have a screw hole (the same applies to the second collar 25) for a bolt 235 to be locked into and tightly press the locking plane 521 of the rod 5, so that the first collar 23 and the rod 5 are more firmly combined.

Referring to fig. 4-7, in use, the rod 5 is a long rod such as a screw or a shaft of a machine tool, and the rod 5 is driven by a motor 10 to rotate. When oil is injected into the first opening 213 of one of the bearing devices 2 (for example, the right bearing device 2), the oil can flow into the first flow hole 233 of the first collar 23 through the seat space 210, and also flow into the first flow hole 233 of the second collar 25 through the gap 240 between the ring seat 24 and the base 21 and the second flow hole 244, so that the oil flows on the outer rod surface 52 around the rod 5, and the heat generated by the rotation friction between the rod 5 and the bearing 22 can be cooled, thereby achieving the cooling and heat dissipation effects. Furthermore, the oil will also flow from the first flow hole 233 of the first collar 23 and the second collar 25, through the annular groove 234 into the rod flow hole 53 of the rod 5, and through the rod flow passage 50 to the rod flow hole 53 of the rod 5 adjacent to the other bearing device 2 (for example, the left bearing device 2), and then through the rod flow hole 53 into the annular groove 234 and the first flow hole 233 of the other bearing device 2, so that the oil will flow inside the whole rod 5 and the rotating friction portion of the rod 5 in the other bearing device 2, thereby achieving the cooling and heat dissipation effects, and during the continuous rotation of the rod 5, the oil will be continuously injected from one of the bearing devices 2 and flow into the other bearing device 2 through the rod 5, and finally the oil can be discharged through the first opening 213 of the other bearing device 2. The oil after heat exchange with the rod 5 and the bearing 22 and discharged through the first opening 213 may flow into a not-shown cooler for recycling, and the oil cooled by the cooler may be injected into one of the bearing devices 2 for use, and the oil continuously repeats the above flowing process for recycling.

It should be noted that, when the bearing device 2 and the rod 5 form a communicating oil path, the second opening 214 of the bearing device 2 as an oil inlet can be blocked by a plug not shown, and the second opening 214 of the bearing device 2 as an oil outlet can also be blocked by a plug not shown.

Referring to fig. 8, the present invention is not limited to the above-mentioned three-way communication. The oil inlet and outlet of the bearing devices 2 can be independent, that is, the first opening 213 of each bearing device 2 can be used for oil inlet, the second opening 214 can be used for oil outlet which exchanges heat with the rod body 5 and the bearing 22, and the rod flow hole 53 and the rod flow channel 50 of the rod body 5 can be omitted, that is, a non-hollow rod body 5 can be used, so that the oil flowing in from each bearing device 2 can flow on the outer rod surface 52 of the rod body 5 and can also be used for cooling the rod body 5 and the bearing 22. The bearing devices 2 may be connected to a cooler, not shown, so that the oil can be cooled by the cooler and then re-injected into each bearing device 2 for recycling.

Referring to fig. 5 to 7, it should be noted that the aperture r1 of the first flow hole 233 of the first collar 23 and the first flow hole 233 of the second collar 25 of the present embodiment is larger than the aperture r2 of the corresponding rod flow hole 53, which is favorable for hole alignment, and the oil flows smoothly from the first flow hole 233 to the rod flow hole 53, which is favorable for oil feeding. In addition, since the oil in the rotating element is more or less subject to centrifugal force and flows out from the radial opening of the rotating element, in order to avoid this problem, in the embodiment, the extending direction of the first flow holes 233 is not parallel to the radial direction of the first collar 23 and the second collar 25, and the first flow holes 233 are intentionally designed to extend in a non-radial direction, so as to stop the oil and avoid the problem of oil spraying out, and also when the first collar 23 and the second collar 25 rotate in the forward and backward directions along with the rod 5, it is beneficial to extrude the oil outside the first collar 23 and the second collar 25 into the first flow holes 233, so as to ensure that enough oil can flow to the peripheral surface and the inside of the rod 5 through the first flow holes 233.

In summary, the first opening 213 of the base 21 is used to inject oil, and the oil can flow around the rod 5, the center and the bearing 22 through the first sleeve ring 23, the ring seat 24 and the second sleeve ring 25, so as to achieve the effects of heat exchange and cooling the rod 5 and the bearing 22, and avoid the problems of overheating, thermal expansion and thermal elongation of the rod 5 and the bearing 22 due to rotational friction. It should be noted that, by designing the annular grooves 234 of the first collar 23 and the second collar 25 to correspond to the positions of the first flow holes 233 and the rod flow holes 53, the first flow holes 233 and the rod flow holes 53 can be ensured to communicate with each other, so as to ensure that the oil path is smooth. And the annular groove 234 surrounds the rod body 5, because the whole ring can contain oil, so that the whole ring and sufficient oil can flow around the rod body 5, the cooling effect is good, and by the design of the annular groove 234 of the first lantern ring 23 and the second lantern ring 25, when the first lantern ring 23 and the second lantern ring 25 are assembled on the rod body 5, the first flow hole 233 and the rod flow hole 53 do not need to be accurately adjusted to correspond to each other, so that the assembly process can be fixed and assembled, and the assembly process is simplified.

Referring to fig. 9, in a variation of the first embodiment of the shaft rotating apparatus of the present invention, the annular grooves 234 of the first collar 23 and the second collar 25 may be enlarged, and the axial length of the annular grooves 234 is increased relative to fig. 5, so as to accommodate more oil and provide better cooling and heat dissipation effects.

Referring to fig. 10 to 12, a second embodiment of the shaft rotating apparatus of the present invention has substantially the same structure as the first embodiment, except that: the mounting base 1 for mounting the motor 10 on the left side of the second embodiment includes a base wall 13 spaced apart from and upstanding from the left side of the bearing device 2, and a frame wall 12 extending from the base wall 13 toward the base 21 of the left side of the bearing device 2. The frame wall 12 is generally frame-shaped and extends around a coupling 101 for connection to the motor 10. The frame wall 12 has a joint surface 122 attached to the base 21, and a plurality of through holes 121 penetrating through the joint surface 122 and extending in a long hole shape along the axial direction of the rod 5. Each through hole 121 has a lateral opening 120 formed on the bonding surface 122, and the lateral opening 120 can communicate with the seat space 210 of the base 21 through the first opening 213 or the second opening 214.

The base wall 13 has an inner wall surface 131 and an outer wall surface 132 which are spaced and substantially annular, a ring groove 133 recessed from the inner wall surface 131 toward the outer wall surface 132, and a liquid outlet hole 134 penetrating from the ring groove 133 toward the outer wall surface 132 of the base wall 13. The ring groove 133 is connected to an end of the through hole 121 adjacent to the base wall 13 and connected between the through hole 121 and the liquid outlet 134, so that the liquid outlet 134 can communicate with the through hole 121 through the ring groove 133. The ring groove 133 has a first groove section 136 connecting the through hole 121, and a second groove section 137 radially extending from the first groove section 136 and also extending toward the motor 10. The first channel section 136 has an inner annular opening 135 that extends through the inner wall surface 131 of the base wall 13. The volume of the second groove segment 137 is larger than that of the first groove segment 136, and the length of the second groove segment 137 is larger than that of the first groove segment 136 along the axial direction of the rod body 5, so that the second groove segment 137 is closer to the motor 10 than the first groove segment 136. The special shape of the ring groove 133 is formed by a mold, for example, a sand mold. The mounting 1 further comprises a plug cap 14 which is arranged in the base wall 13 and closes the inner ring opening 135 of the ring groove 133.

In the second embodiment, after the oil is injected from the first opening 213 of the right bearing device 2, the oil flows through the right bearing device 2, through the inside of the rod 5, and to the left bearing device 2, and the flow direction is substantially the same as that of the first embodiment. In contrast, in the embodiment, the first opening 213 and the second opening 214 of the left bearing device 2 are plugged by an end plug, so that the oil can flow into the lateral opening 120 of the through hole 121 of the left mounting seat 1 through the seat space 210 of the base 21, the first opening 213 and the second opening 214 after reaching the left bearing device 2, and then flow out of the liquid outlet 134 through the through hole 121 and the ring groove 133. Since the oil of this embodiment can also flow in the left mounting seat 1, and the oil flowing in the ring groove 133 can exchange heat with the motor 10 to reduce the temperature of the motor 10, this second embodiment further has the effect of cooling the motor 10. It should be noted that the second groove section 137 is disposed on the ring groove 133, so that the ring groove 133 can accommodate more oil for increasing the design, and the second groove section 137 is located close to the motor 10, so that a large amount of oil can sufficiently exchange heat with the motor 10 when flowing through the ring groove 133, and the cooling effect of the motor 10 is good.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and the invention is still within the scope of the present invention by simple equivalent changes and modifications made according to the claims and the contents of the specification.

Claims

1. A bearing arrangement adapted for rotatable mounting of a rod body and comprising: the bearing comprises a base and a bearing unit, wherein the base comprises an inner circumferential surface for defining a seat space, an outer circumferential surface opposite to the inner circumferential surface, a first opening and a second opening, the first opening and the second opening penetrate from the outer circumferential surface to the inner circumferential surface and are communicated with the seat space, and oil can pass through the first opening and the second opening; this bearing unit installs in this seat space of this base to supply this body of rod can wear to stretch through with rotating, first end and the second end of interval about this bearing unit has, its characterized in that: the bearing device also comprises a first lantern ring, a ring seat and a second lantern ring which can be synchronously and rotatably sleeved around the rod body and is positioned in the ring seat, wherein the first lantern ring is arranged in the seat space of the base and can be synchronously and rotatably sleeved around the rod body, the first lantern ring is positioned on one side of the first end part and comprises an inner ring surface attached to the rod body, an outer ring surface opposite to the inner ring surface, at least one first flow hole which penetrates from the outer ring surface to the inner ring surface and is communicated with the seat space of the base, and a ring groove which is concavely formed on the inner ring surface and is communicated with the at least one first flow hole; the ring seat is non-rotatably mounted in the seat space and located on one side of the second end of the bearing unit, and comprises an inner seat surface, an outer seat surface opposite to the inner seat surface and facing the inner peripheral surface of the base, and at least one second flow hole penetrating from the outer seat surface to the inner seat surface and communicating the first opening with the second opening; one of the first opening and the second opening can be used for injecting oil, so that the oil can flow through the ring seat, the at least one first flow hole and the ring groove of the first lantern ring, the rod body and the bearing unit through the at least one second flow hole and then flow out of the other one of the first opening and the second opening.

2. The bearing assembly of claim 1, wherein: the second collar includes an inner annular surface that is attached to the rod body, an outer annular surface opposite to the inner annular surface, at least one first flow hole that penetrates from the outer annular surface to the inner annular surface and is communicated with the seat space of the base, and an annular groove that is recessed and formed on the inner annular surface and is communicated with the at least one first flow hole, wherein the oil liquid also flows through the at least one first flow hole and the annular groove of the second collar.

3. The bearing assembly of claim 2, wherein: the first lantern ring and the second lantern ring both further comprise a surrounding ring part axially extending along the rod body, and a positioning ring part radially protruding from one end of the surrounding ring part.

4. A bearing assembly according to claim 3, wherein: the bearing device also comprises two oil seals which are respectively sleeved on the surrounding ring part of the first lantern ring and the second lantern ring in a circle mode, and a first O-shaped ring and a second O-shaped ring which are respectively embedded on the inner ring surfaces of the first lantern ring and the second lantern ring, wherein the positions of the first O-shaped ring and the second O-shaped ring respectively correspond to the positions of the positioning ring parts of the first lantern ring and the second lantern ring.

5. The bearing assembly of claim 1, wherein: a gap is formed between the outer seat surface of the ring seat and the inner peripheral surface of the base and is used for communicating the seat space with the at least one second flow hole of the ring seat.

6. The bearing assembly of claim 2, wherein: the direction in which the at least one first flow hole of the first collar extends through from the outer ring surface toward the inner ring surface is not parallel to the radial direction of the first collar, and the direction in which the at least one first flow hole of the second collar extends through from the outer ring surface toward the inner ring surface is not parallel to the radial direction of the second collar.

7. An apparatus for rotating a shaft, adapted to be coupled to a motor, comprising: the motor comprises two spaced bearing devices, a rod body which can be driven by the motor and can be rotatably arranged on the bearing devices, and a mounting seat which is assembled with one of the bearing devices and is used for mounting the motor; each bearing device comprises a base and a bearing unit, wherein the base comprises an inner circumferential surface defining a seat space and an outer circumferential surface opposite to the inner circumferential surface, the bearing unit is arranged in the seat space of the base and can be penetrated and passed by the rod body in a rotating manner, and the bearing unit is provided with a first end part and a second end part which are arranged at left and right intervals, and is characterized in that: each bearing device also comprises a first lantern ring, a ring seat and a second lantern ring which can be synchronously and rotatably sleeved around the rod body and is positioned in the ring seat, wherein the first lantern ring is arranged in the seat space of the base and can be synchronously and rotatably sleeved around the rod body, the first lantern ring is positioned at one side of the first end part and comprises an inner ring surface attached to the rod body, an outer ring surface opposite to the inner ring surface, at least one first flow hole which penetrates from the outer ring surface to the inner ring surface and is communicated with the seat space, and a ring groove which is concavely formed on the inner ring surface and is communicated with the at least one first flow hole; the ring seat is non-rotatably mounted in the seat space and located on one side of the second end of the bearing unit, and comprises an inner seat surface, an outer seat surface opposite to the inner seat surface and facing the inner peripheral surface of the base, and at least one second flow hole penetrating from the outer seat surface to the inner seat surface and communicating the first opening with the second opening; the base of at least one of the bearing devices further comprises a first opening which penetrates from the outer peripheral surface to the inner peripheral surface and is communicated with the seat space; the rod body comprises an inner rod surface defining an axially extending rod flow channel, an outer rod surface opposite to the inner rod surface, and a plurality of rod flow holes which are spaced from each other, penetrate from the outer rod surface to the inner rod surface and are communicated with the rod flow channel, and the rod flow holes are communicated with the first flow holes through the annular groove of the first sleeve ring; the mounting seat is combined with the base of one of the bearing devices, and the mounting seat is provided with a through hole communicated with the seat space of the base and a liquid outlet hole communicated with the through hole; the first opening of the base of one of the bearing devices can be used for injecting oil, and the oil can flow to the base of the other of the bearing devices through the rod flow channel of the rod body and flows into the through hole of the mounting seat to flow out from the liquid outlet hole.

8. The shaft turning apparatus according to claim 7, characterized in that: the second sleeve ring comprises an inner ring surface which is attached to the rod body, an outer ring surface which is opposite to the inner ring surface, at least one first flow hole which penetrates from the outer ring surface to the inner ring surface and is communicated with the seat space, and a ring groove which is formed on the inner ring surface in a recessed mode and is communicated with the at least one first flow hole; the rod flow bore communicates with the first flow bore through the first collar and the annular channel of the second collar.

9. The shaft turning apparatus according to claim 7, characterized in that: the mounting seat comprises a base wall and a frame wall extending and combined from the base wall to the base of one of the bearing devices, the frame wall extends to the periphery of the motor, the frame wall is provided with a through hole and a combining surface attached to the base, and the through hole is provided with a lateral opening formed on the combining surface and communicated with the seat space of the base.

10. The shaft turning apparatus according to claim 7, characterized in that: the mounting seat comprises a base wall and a frame wall extending and combined from the base wall to the base of one of the bearing devices, wherein the frame wall extends to the periphery of the motor and is provided with a through hole, the through hole extends in a long hole shape along the axial direction of the rod body, the base wall is provided with a liquid outlet hole, an inner wall surface and an outer wall surface at intervals, and a ring groove recessed from the inner wall surface to the outer wall surface, the ring groove is communicated between the through hole and the liquid outlet hole and is provided with an inner ring opening penetrating through the inner wall surface, and the mounting seat further comprises a plug cover which is plugged in the base wall and seals the inner ring opening.