Integrated rotary drive with high heat dissipation performance

Abstract

The utility model relates to the technical field of rotary drives, in particular to a high-heat-dissipation-performance integrated rotary drive which comprises a shell, an inner ring fixedly connected to the interior of the shell, an outer ring rotationally arranged on the inner ring and a drive installation part arranged on the shell. The inner ring is provided with a first oil injection hole used for conducting oil injection and cooling on a ball between the inner ring and the outer ring, the shell is provided with a second oil injection hole used for conducting oil injection and cooling on the tooth surface of the outer ring, and the shell is provided with a third oil injection hole used for conducting oil injection and cooling on a transmission meshing part where the outer ring is connected with the driving installation part. The bearing has the beneficial effects that the balls are subjected to oil injection and cooling through the first oil injection hole, the transmission meshing part is subjected to oil injection and cooling through the third oil injection hole, the tooth surface of the outer ring is cooled through the second oil injection hole, and the heat dissipation and cooling effects of the outer ring are improved; and meanwhile, the problem that the heat dissipation efficiency at the balls is reduced due to the formation of a heat accumulation effect is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary drive technical field, concretely relates to a high heat dissipation performance integrated rotary drive. BACKGROUND

[0002] In high speed rotary drive (such as robot joint, wind power variable pitch system, precision machine tool rotary table etc.), due to the friction, gear meshing and motor loss brought by high speed operation, the system will generate a large amount of heat, and bearing part and transmission meshing area are the main heat sources. Overhigh temperature rise will lead to lubrication failure, material thermal deformation, mechanical precision decline, and even cause equipment failure, so heat dissipation design becomes one of the key technical challenges of high speed rotary drive.

[0003] At present, the heat dissipation scheme for rotary drive mainly focuses on bearing local cooling and transmission meshing part cooling, and common method is lubrication cooling: reducing bearing friction heat through oil cooling or grease lubrication;

[0004] But the traditional heat dissipation mode has the problem of insufficient heat dissipation of the outer ring, and the outer ring of the rotary drive is usually a large gear ring structure, and the surface area is large and the heat capacity is high, so only the bearing or local transmission position is cooled, and the overall temperature of the outer ring cannot be effectively reduced. When the outer ring is high temperature, the outer ring high temperature will be conducted to the bearing area in reverse, forming a "heat accumulation" effect, which further reduces the bearing heat dissipation efficiency.

[0005] Therefore, a high heat dissipation performance integrated rotary drive is needed to overcome the occurrence of the above problems. UTILITY MODEL CONTENTS

[0006] In order to solve the above problems, the utility model embodiment provides a high heat dissipation performance integrated rotary drive, which realizes the purpose of solving the problems in the background art.

[0007] In order to realize the above purpose, the utility model embodiment specifically adopts the following technical scheme: a high heat dissipation performance integrated rotary drive, comprising a shell, an inner ring fixedly connected inside the shell, an outer ring rotatably arranged on the inner ring, a drive mounting portion arranged on the shell, an oil injection hole one for oil injection cooling of the ball between the inner ring and the outer ring is arranged on the inner ring, an oil injection hole two for oil injection cooling of the tooth surface of the outer ring is arranged on the shell, and an oil injection hole three for oil injection cooling of the transmission meshing portion connected with the drive mounting portion of the outer ring is arranged on the shell.

[0008] The ball is cooled by the oil injection hole one, the transmission meshing portion is cooled by the oil injection hole three, and the tooth surface of the outer ring is cooled by the oil injection hole two, which improves the heat dissipation and cooling effect of the outer ring, and avoids the problem of reduced heat dissipation efficiency of the ball due to the formation of "heat accumulation" effect.

[0009] In order to balance the oil, the shell is provided with an oil outlet one near the outer ring, and the driving mounting portion is provided with an oil outlet two near the driving mounting portion bearing, so that the oil is discharged through the oil outlet one and the oil outlet two, and the circulation of the oil is realized.

[0010] The inner ring is a split structure, specifically comprising a base fixedly connected to the shell and a gland fixedly connected to the base.

[0011] In order to discharge the oil from the channel, the bottom of the channel is provided with a passage, and the oil can be discharged through the passage.

[0012] The oil injection hole one is arranged on the gland, and the oil injection hole one communicates with the top of the channel.

[0013] The channel is provided with an oil storage groove on both sides, so that part of the oil is stored in the channel, facilitating the lubrication between the ball and the channel.

[0014] The workpiece mounting direction of the outer ring is opposite to the driving source mounting direction of the driving mounting portion, and the shell is provided with a base.

[0015] The beneficial effects of the embodiment of the utility model are as follows:

[0016] The oil injection hole one is used for oil injection and cooling of the ball, the oil injection hole three is used for oil injection and cooling of the transmission meshing part, and the oil injection hole two is used for cooling of the tooth surface of the outer ring, so that the heat dissipation and cooling effect of the outer ring is improved, and the problem of reduced heat dissipation efficiency of the ball due to the "heat accumulation" effect is avoided.

[0017] The gland can be disassembled, that is, the oil injection hole one can be disassembled from the rotary drive main body for maintenance of the oil injection hole one. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the first perspective of the utility model;

[0019] Figure 2 It is a structure schematic view of the second perspective of the utility model;

[0020] Figure 3 It is a sectional view schematic view of the first perspective of the utility model;

[0021] Figure 4 It is a sectional view schematic view of the second perspective of the utility model;

[0022] Figure 5 It is the third view of the utility model.

[0023] In the figure: 1, shell; 2, inner ring; 3, outer ring; 4, ball; 5, oil injection hole one; 6, oil injection hole two; 7, oil injection hole three; 8, drive mounting portion; 9, oil outlet one; 10, oil outlet two; 11, channel; 12, passage; 13, oil storage groove; 14, base;

[0024] 21, base; 22, gland. DETAILED DESCRIPTION

[0025] The preferred embodiments of the utility model are described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the utility model, and are not intended to limit the protection scope of the utility model.

[0026] Referring to Figure 1 The utility model discloses a kind of integrated rotary drive of high heat dissipation performance, including base 14, base 14 is fixedly connected with shell 1, the inside of shell 1 is fixedly connected with inner ring 2, inner ring 2 is rotatably connected with outer ring 3;Rotary workpiece is installed on outer ring 3, drive source is installed on the drive mounting portion 8 on shell 1, drive source is driven outer ring 3 to rotate by drive mounting portion 8, to drive rotary workpiece to rotate;The workpiece mounting direction of outer ring 3 and the drive source mounting direction of drive mounting portion 8 are opposite, so that the installation of drive source does not encroach on the installation space of rotary workpiece.

[0027] Referring to Figures 1-5 Inner ring 2 and outer ring 3 are provided with ball 4, inner ring 2 is provided with oil injection hole one 5 for oil injection cooling of ball 4 between inner ring 2 and outer ring 3, shell 1 is provided with oil injection hole two 6 for oil injection cooling of the tooth surface of outer ring 3, shell 1 is provided with oil injection hole three 7 for oil injection cooling of the transmission part connected between outer ring 3 and drive mounting portion 8, shell 1 is provided with oil outlet one 9 close to outer ring 3, drive mounting portion 8 is provided with oil outlet two 10 close to the bearing of drive mounting portion 8, oil is injected into the inside of rotary drive through oil injection hole one 5, oil injection hole two 6 and oil injection hole three 7, then oil is discharged through oil outlet one 9 and oil outlet two 10, to realize the circulation of oil, that is, ball 4 can be oil injection cooled through oil injection hole one 5, transmission meshing part is oil injection cooled through oil injection hole three 7, the tooth surface of outer ring 3 is cooled through oil injection hole two 6, improve the heat dissipation cooling effect of outer ring 3, while avoiding the problem that the heat dissipation efficiency of ball 4 is reduced due to the formation of "heat accumulation" effect.

[0028] The oil outlet one 9 is arranged close to the outer ring 3, the circulation effect of the oil at the outer ring 3 can be accelerated, and the heat dissipation of the outer ring 3 is avoided from being affected by the circulation dead zone; the oil outlet two 10 has the same effect, and the heat dissipation of the bearing at the driving mounting portion 8 is avoided from being affected by the circulation dead zone.

[0029] Referring to Figure 2 and Figure 5 , the inner ring 2 is of a split structure, specifically, the inner ring 2 comprises a base 21 fixedly connected to the housing 1 and a gland 22 fixedly connected to the base 21; the outer ring 3, the base 21 and the gland 22 jointly form a channel 11 for placing the ball 4; the split structure of the inner ring 2 facilitates disassembly, so that the channel 11 is exposed, thereby facilitating maintenance of the channel 11 and the ball 4.

[0030] The bottom of the channel 11 is provided with a passage 12, through which the oil in the channel 11 can be quickly discharged, facilitating circulation of the oil.

[0031] The channel 11 is provided with an oil storage groove 13 on both sides, so that part of the oil in the channel 11 is stored through the oil storage groove 13, facilitating lubrication between the ball 4 and the channel 11.

[0032] Referring to Figure 5 , the oil injection hole one 5 is arranged on the gland 22, the gland 22 can be disassembled, that is, the oil injection hole one 5 can be disassembled from the rotary drive main body to facilitate maintenance of the oil injection hole one 5; the oil injection hole one 5 communicates with the top of the channel 11, so that the oil injected through the oil injection hole one 5 can directly drop above the ball 4, and under the action of centrifugal force and gravity, the oil can quickly enter the channel 11 when rotating at high speed.

[0033] As an optional embodiment of the present application:

[0034] A temperature sensor can be arranged in the rotary drive, and the temperature sensor is used to monitor the temperature of the oil in the rotary drive in real time, thereby facilitating adjustment of the flow rate of the oil.

[0035] It should be noted that, in the description of the present application, the terms "center, upper, lower, left, right, vertical, horizontal, inner, outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first, second, third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In addition, it needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the term "mounting, connecting, connection" should be broad understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0037] The term "comprising" or any other similar word is intended to encompass a non-exclusive inclusion, so that a process, article, or equipment / device including a series of elements includes not only those elements, but also other elements not explicitly listed, or inherent elements of these processes, articles or equipment / devices.

[0038] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical schemes after these changes or replacements will fall within the protection scope of the utility model.

Claims

1. A high heat dissipation integrated rotary drive, comprising a housing (1), an inner ring (2) fixedly connected inside the housing (1), an outer ring (3) rotatably arranged on the inner ring (2), and a drive mounting portion (8) arranged on the housing (1), characterized in that, The inner ring (2) is provided with an oil injection hole (5) for oil injection and cooling of the balls (4) between the inner ring (2) and the outer ring (3), the housing (1) is provided with an oil injection hole (6) for oil injection and cooling of the tooth surface of the outer ring (3), and the housing (1) is provided with an oil injection hole (7) for oil injection and cooling of the transmission meshing part connected between the outer ring (3) and the driving mounting part (8).

2. The high heat dissipation performance integrated rotary drive according to claim 1, characterized by, The housing (1) is provided with an oil outlet (9) close to the outer ring (3).

3. The high heat dissipation performance integrated rotary drive according to claim 2, characterized by, The driving mounting part (8) is provided with an oil outlet (10) close to the bearing of the driving mounting part (8).

4. The high heat dissipation performance integrated rotary drive according to claim 1, wherein The inner ring (2) is a split structure, specifically, the inner ring (2) includes a base (21) fixedly connected to the housing (1) and a gland (22) fixedly connected to the base (21). The outer ring (3), the base (21) and the gland (22) form a channel (11) for placing the balls (4).

5. The high heat dissipation performance integrated rotary drive according to claim 4, wherein The bottom of the channel (11) is provided with a passage (12).

6. The high heat dissipation performance integrated rotary drive according to claim 4 or 5, characterized by The oil injection hole (5) is arranged on the gland (22), and the oil injection hole (5) is communicated with the top of the channel (11).

7. The high heat dissipation performance integrated rotary drive according to claim 4, wherein Both sides of the channel (11) are provided with oil storage grooves (13).

8. The high heat dissipation performance integrated rotary drive according to claim 1, wherein The rotation workpiece mounting direction of the outer ring (3) and the driving source mounting direction of the driving mounting part (8) are opposite, and the housing (1) is provided with a base (14).

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