Servo motor casing structure convenient for heat dissipation

Abstract

The invention discloses a servo motor casing structure convenient for heat dissipation, which belongs to the technical field of motors and comprises a casing, end covers are detachably mounted at two ends of the casing respectively, a plurality of heat dissipation fins are distributed on the side wall of the casing, and two independent cooling channels are arranged in the inner wall of the casing; the oil cooling channel is composed of a plurality of wide channels which are circumferentially distributed at equal intervals, and the water cooling channel is composed of a plurality of gap channels which are circumferentially distributed at equal intervals; the two ends of the machine shell axially and symmetrically extend to form inner protruding edges, and the oil cooling channels are distributed in the inner protruding edges in a penetrating mode. An oil inlet ring and an oil discharge ring are symmetrically arranged on the machine shell, are both distributed between the machine shell and the end cover, and are respectively communicated with two sides of the oil cooling channel; amplitude modulation units are slidably arranged at the positions, located on the peripheries of the inner protruding edges, of the machine shell, and the two amplitude modulation units can be matched to adjust the effective circulation length of each gap channel in the water cooling channel; the oil cooling channels and the water cooling channels are arranged correspondingly, so that the heat dissipation effect of the case is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a servo motor casing structure which is convenient for heat dissipation. Background Art

[0002] With the advancement of motor technology and the expansion of its application scope, the development of high-power and high-density motors, especially the popularization of high-power and high-density motors, the problem of heat generation per unit volume of the core and winding has increased significantly; and effective cooling can reduce the efficiency loss caused by overheating of the motor and extend the service life of the motor; At present, the motor heat dissipation methods used in the prior art include natural cooling, air cooling, liquid cooling, etc., such as the invention patent with publication number CN111245146A, which mainly provides water channels and oil channels on the casing. Although it integrates water cooling and oil cooling, it can significantly improve the heat dissipation effect of the casing, but the flow paths of the water channels and oil channels are fixed, and the heat distribution of the motor casing is different under different working conditions due to environmental factors, and local overheating is prone to occur. Although direct liquid cooling of the casing can achieve overall rapid cooling, it is impossible to concentrate on cooling and dissipating the heat on the overheated parts, resulting in insignificant cooling effect and increased cooling medium consumption cost.

[0003] Therefore, it is necessary to provide a servo motor housing structure that is easy to dissipate heat to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above object, the present invention provides the following technical solution: a servo motor housing structure that is convenient for heat dissipation, comprising a housing, end covers are detachably mounted at both ends of the housing, a plurality of heat dissipation fins are evenly distributed on the side wall of the housing, and two independent cooling channels are arranged in the inner wall of the housing, wherein the cooling channel located on the inner side is arranged as an oil cooling channel, and the cooling channel located on the outer side is arranged as a water cooling channel; The oil cooling channel is composed of a plurality of wide channels which are evenly spaced around the circumference, and the water cooling channel is composed of a plurality of gap channels which are evenly spaced around the circumference; The two ends of the housing are axially symmetrically extended to form an inner convex edge, and the oil cooling channel runs through and is distributed in the inner convex edge; The casing is symmetrically provided with an oil inlet ring and an oil outlet ring, the oil inlet ring and the oil outlet ring are both distributed between the casing and the end cover, and are respectively connected to the two sides of the oil cooling channel; The housing is provided with an amplitude modulation unit slidably disposed on the periphery of each inner convex edge, and the two amplitude modulation units can cooperate to adjust the effective flow length of each gap in the water cooling channel, so that the water cooling channel on the housing adopts an appropriate water cooling flow path for cooling and heat dissipation when the motor is cooled in different working states; Two gaps located at the left and right positions of the wide channel are combined to form a whole, a through opening is opened at the center of the inner wall of the housing, and the two gaps are connected through the through opening; sealing strips are symmetrically arranged in the gaps, inner ribs are fixed between the sealing strips, and strip holes are opened at both ends of the inner ribs; The outer wall of the housing is axially provided with side convex edges at each slot, the side convex edges are provided with guide grooves, and the housing is radially provided with flow holes at each side convex edge, the guide grooves are correspondingly connected with each slot through the flow holes; The side convex edge of the casing located on the same side of each wide channel is connected to a water inlet pipe, and the side convex edge located on the other side of each wide channel is connected to a drain pipe.

[0005] Furthermore, preferably, the number of gaps in the water cooling channel is twice the number of wide channels in the oil cooling channel, and each of the wide channels is distributed in the middle of two adjacent gaps, and the overall width of the wide channel extends and covers two-thirds of the gap.

[0006] Further, preferably, the length of the gap channel is smaller than the length of the wide channel.

[0007] Further, preferably, a plurality of oil holes corresponding to the wide channels are distributed on the oil inlet ring, and each of the oil holes is sealed and connected with the wide channels respectively; an annular cavity is provided inside the oil inlet ring, and the annular cavity is connected with each of the wide channels through the oil holes, and an external hole is provided on the side wall of the oil inlet ring, and an oil delivery pipe is connected to the outside of the external hole.

[0008] Further, preferably, the diameter of the oil hole on the oil inlet ring close to the outer hole is smaller than the diameter of the oil hole far from the outer hole; and the internal structure of the oil discharge ring is exactly the same as that of the oil inlet ring.

[0009] Further, as a preference, the amplitude modulation unit comprises a shaft ring, the shaft ring is coaxially slidably connected to the inner convex edge of the casing, each of the gaps is slidably connected with a baffle plate, a slide groove is provided in the middle of the baffle plate, the baffle plate is slidably assembled with the inner rib through the slide groove, a plurality of support rods are axially connected to the shaft ring, one end of each support rod passes through a sealing strip and is connected to the baffle plate; A rubber strip is fixed on a side of the baffle plate away from the support rod. The rubber strip slides horizontally along the strip hole and is vertically arranged with the strip hole. The rubber strip is in sealing and sliding contact with the gap.

[0010] Further, as a preference, the support rod is slidably connected to the shaft ring, and a spring is sleeved on the support rod, and the other end of the spring is in abutment with the baffle; a plurality of guide sleeves are rotatably connected to the shaft ring, and each of the guide sleeves is sleeved on the outside of the support rod through a threaded engagement, and the guide sleeve drives the support rod to slide axially along the casing in corresponding forward and reverse rotation adjustment, thereby accurately adjusting the effective flow length and distribution path of each gap.

[0011] Further, preferably, an adjustment ring is rotatably connected to the casing, and a threaded ring is fixed to one side of the shaft ring through an extension rib, and the adjustment ring is threadedly connected to the threaded ring, so that the water cooling channel in the casing can be flexibly adjusted through the amplitude modulation unit during the rotation adjustment of the adjustment ring.

[0012] Furthermore, preferably, the water inlet pipe connected to the outer side of the side convex edge uses a variety of pumping liquid pressures to deliver the cold water medium into the gap, and when the pumping liquid pressure is higher than a threshold value, each gap gradually expands its internal effective flow length.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The oil cooling channel and the water cooling channel used in the casing of the present invention are arranged correspondingly, so that the heat inside the casing and on the inner wall can be quickly transferred to the outer wall of the casing through the oil cooling channel, and then the outer wall of the casing is quickly cooled and dissipated through the water cooling channel, thereby improving the heat dissipation effect of the casing; the oil cooling channel adopts multiple wide channels for unidirectional transportation of cold oil medium, and the water cooling channel adopts multiple groups of mutually coordinated gaps for S-shaped flow transportation of cold water medium, thereby enhancing the overall heat dissipation and cooling intensity of the casing; the amplitude modulation unit is also provided, which can adaptively adjust the water-cooling flow path of each gap according to the working environment and long-term working status of the motor, so that the cold water medium in the gap flows correspondingly and concentratedly in the heat gathering part of the casing, thereby ensuring the heat dissipation effect and significantly increasing the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the casing in the present invention; Figure 2 It is a schematic diagram of the assembly structure of the housing and the end cover in the present invention; Figure 3 It is a front view of the housing of the present invention; Figure 4 It is a schematic diagram of the structure of the gap channel in the present invention; Figure 5 It is a partial structural cross-sectional view of the casing of the present invention; Figure 6 It is a schematic diagram of the structure of the oil inlet ring in the present invention; Figure 7 It is a front view of the oil inlet ring in the present invention; Figure 8 It is a structural schematic diagram of the amplitude modulation unit in the present invention; Fig. 9 for Figure 8 A schematic diagram of the structure enlargement in the middle; In the figure: 1, casing; 11, end cover; 12, heat dissipation fins; 13, oil cooling channel; 14, water cooling channel; 15, inner convex edge; 16, side convex edge; 17, adjustment ring; 2, wide channel; 3, gap channel; 31, sealing strip; 32, inner rib; 33, strip hole; 34, through port; 4, oil inlet ring; 41, oil hole; 42, ring cavity; 43, outer hole; 5, amplitude modulation unit; 51, shaft ring; 52, baffle; 53, support rod; 54, rubber strip; 55, guide sleeve; 56, threaded ring. DETAILED DESCRIPTION

[0015] See also Figure 1-Figure 9 In an embodiment of the present invention, a servo motor housing structure that is convenient for heat dissipation includes a housing 1, end covers 11 are detachably mounted at both ends of the housing, a plurality of heat dissipation fins 12 are evenly distributed on the side walls of the housing 1, and two independent cooling channels are arranged in the inner wall of the housing 1, wherein the cooling channel located on the inner side is arranged as an oil cooling channel 13, and the cooling channel located on the outer side is arranged as a water cooling channel 14; that is, the oil cooling channel 13 is arranged closer to the center of the housing relative to the water cooling channel 14, so that the heat inside the housing and on the inner wall can be dissipated by the cold oil medium in the oil cooling channel 13; The oil cooling channel 13 is composed of a plurality of wide channels 2 which are evenly distributed around the circumference, and the water cooling channel 14 is composed of a plurality of gap channels 3 which are evenly distributed around the circumference; The two ends of the housing 1 are axially symmetrically extended to form an inner convex edge 15, and the oil cooling channel 13 is distributed throughout the inner convex edge 15; The housing 1 is symmetrically provided with an oil inlet ring 4 and an oil drain ring, which are distributed between the housing 1 and the end cover 11 and are respectively connected to the two sides of the oil cooling channel 13; the cold oil medium in the oil inlet ring 4 can enter the wide channel 2 in each oil cooling channel 13, and then be discharged through the oil drain ring; The housing 1 is provided with an amplitude modulation unit 5 slidably disposed on the periphery of each inner convex edge 15. The two amplitude modulation units 5 can cooperate to adjust the effective flow length of each gap 3 in the water cooling channel 14, so that the water cooling channel 14 on the housing adopts an appropriate water cooling flow path to cool down and dissipate heat when the motor is cooled down in different working states; so as to improve the heat dissipation effect of the housing, thereby being able to adapt to the heat dissipation and cooling of the motor in a complex environment; The two gaps 3 located at the left and right positions of the wide channel 2 are combined with each other to form a whole, and a through opening 34 is opened at the center position of the inner wall of the casing 1, and the two gaps 3 are connected through the through opening 34; the gaps 3 are symmetrically arranged with sealing strips 31, and inner ribs 32 are fixed between the sealing strips 31, and strip holes 33 are opened at both ends of the inner ribs 32; that is, the cold water medium can flow axially along the sealing strip 31 after entering one of the gaps 3, and flow to the other side of the gap 3 through the two strip holes 33 on the sealing strip 31, and then enter the adjacent gap 3 through the through opening 34, and flow to the other side through the two strip holes 33 in the gap 3, forming an S-shaped flow trajectory; The outer wall of the housing 1 is axially provided with a side convex edge 16 at each gap 3, and a guide groove is provided in the side convex edge 16. The housing 1 is radially provided with a flow hole at each side convex edge 16, and the guide groove is correspondingly connected with each gap 3 through the flow hole; the cold water medium in the guide groove can enter the gap 3 or be discharged from the gap 3 through the flow hole; The side convex edge 16 on the casing 1 located on the same side of each wide channel 2 is connected to an inlet pipe, and the side convex edge 16 located on the other side of each wide channel 2 is connected to a drain pipe (not shown in the figure); therefore, the cold water medium in the water inlet pipe can enter the corresponding gap channel 3 through the guide groove in the side convex edge 16, and then be discharged through another gap channel 3, and discharged into the drain pipe through the guide groove in the corresponding side convex edge 16; wherein the drain pipes can be connected to each other through a main pipe, so as to discharge the cold water medium in a centralized manner.

[0016] In this embodiment, the number of gaps 3 in the water-cooling channel 14 is twice the number of wide channels 2 in the oil-cooling channel 13, and each of the wide channels 2 is distributed in the middle of two adjacent gaps 3, and the overall width of the wide channels 2 extends and covers two-thirds of the gaps 3, thereby ensuring the overall heat dissipation and cooling effect of the water-cooling channel 14 on the casing 1.

[0017] As a preferred embodiment, the length of the gap channel 3 is smaller than the length of the wide channel 2 .

[0018] In this embodiment, a plurality of oil holes 41 corresponding to the wide channels 2 are distributed on the oil inlet ring 4, and each of the oil holes 41 is sealed and connected with the wide channels 2 respectively; an annular cavity 42 is provided inside the oil inlet ring 4, and the annular cavity 42 is connected with each of the wide channels 2 through the oil holes 41, and an outer hole 43 is provided on the side wall of the oil inlet ring 4, and an oil delivery pipe (not shown in the figure) is connected to the outer hole 43.

[0019] In this embodiment, the diameter of the oil hole 41 on the oil inlet ring 4 close to the outer hole 43 is smaller than the diameter of the oil hole 41 far from the outer hole 43, thereby ensuring that the flow rate of the cold oil medium entering each wide channel through the oil hole 41 in the oil inlet ring 4 remains consistent, thereby improving the uniformity of heat dissipation; and the internal structure of the oil discharge ring is exactly the same as that of the oil inlet ring 4.

[0020] In this embodiment, the amplitude modulation unit 5 includes a shaft ring 51, and the shaft ring 51 is coaxially slidably connected to the inner convex edge 15 of the housing 1. A baffle plate 52 is slidably connected in each of the gaps 3. A slide groove is provided in the middle of the baffle plate 52. The baffle plate 52 is slidably assembled with the inner rib 32 through the slide groove. A plurality of support rods 53 are axially connected to the shaft ring 51, and one end of each support rod 53 passes through the sealing strip 31 and is connected to the baffle plate 52. A rubber strip 54 is fixed on the side of the baffle plate 52 away from the support rod 53. The rubber strip 54 slides horizontally along the strip hole 33 and is arranged vertically with the strip hole 33. The rubber strip 54 is in sealed sliding contact with the gap 3, that is, the rubber strip 54 can form a flow-blocking effect on the gap 3 in the gap 3. By adjusting the positioning points of the two rubber strips 54 in the strip hole 33, on the one hand, the effective flow length of a single gap 3 can be accurately controlled, and on the other hand, the distribution position of the flow path of each gap 3 can be adjusted, so that highly concentrated heat dissipation can be carried out on the heat accumulation part of the casing 1.

[0021] As a preferred embodiment, the support rod 53 is slidably connected to the shaft ring 51, and a spring is sleeved on the support rod 53, and the other end of the spring is in contact with the baffle plate 52; a plurality of guide sleeves 55 are rotatably connected to the shaft ring 51, and each of the guide sleeves 55 is sleeved on the outside of the support rod 53 through a threaded engagement action, and the guide sleeve 55 drives the support rod 53 to slide axially along the casing 1 in the forward and reverse rotation adjustment, thereby accurately adjusting the effective flow length and distribution path of each gap 3, that is, before the motor is used, each guide sleeve 55 can be twisted forward and backward with the help of a tool, thereby effectively changing the effective flow length of the gap 3 and the distribution position of the flow path.

[0022] In this embodiment, an adjustment ring 17 is rotatably connected to the housing 1, and a threaded ring 56 is fixed to one side of the shaft ring 51 through an extension rib. The adjustment ring 17 is threadedly connected to the threaded ring 56, so that the water cooling channel 14 in the housing 1 can be flexibly adjusted through the amplitude modulation unit 5 according to the specific use environment of the motor during the rotation adjustment of the adjustment ring 17, wherein the adjustment ring 17 can synchronously adjust each gap 3 at the same time, and in specific use, after the guide sleeve 55 completes the independent adjustment of a single gap 3, the adjustment ring 17 then controls and adjusts the overall water cooling channel 14 based on the long-term working state and environmental conditions of the motor, so as to provide a quick adjustment means for the water cooling channel 14 for the motor.

[0023] In this embodiment, the water inlet pipe connected to the outside of the side convex edge 16 uses a variety of pumping pressures to deliver the cold water medium into the gap 3, and when the pumping pressure is higher than the threshold, each gap 3 gradually expands its internal effective flow length, that is, when the motor is working, the amplitude modulation unit 5 no longer regulates the water cooling channel 14. At this time, the effective flow length of each gap 3 in the water cooling channel 14 can be changed by changing the pumping pressure of the cold water medium, thereby further improving the heat dissipation effect of the casing 1.

[0024] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A servo motor housing structure for facilitating heat dissipation, comprising a housing (1), end covers (11) being detachably mounted at both ends of the housing, a plurality of heat dissipation fins (12) being evenly distributed on the side wall of the housing (1), characterized in that: Two independent cooling channels are arranged in the inner wall of the casing (1), wherein the cooling channel located on the inner side is arranged as an oil cooling channel (13), and the cooling channel located on the outer side is arranged as a water cooling channel (14); The oil cooling channel (13) is composed of a plurality of wide channels (2) distributed at equal intervals around the circumference, and the water cooling channel (14) is composed of a plurality of gap channels (3) distributed at equal intervals around the circumference; The two ends of the housing (1) are axially symmetrically extended to form an inner convex edge (15), and the oil cooling channel (13) is distributed throughout the inner convex edge (15); An oil inlet ring (4) and an oil drain ring are symmetrically arranged on the casing (1); the oil inlet ring (4) and the oil drain ring are both distributed between the casing (1) and the end cover (11), and are respectively connected to two sides of the oil cooling channel (13); The housing (1) is provided with an amplitude modulation unit (5) slidably disposed on the periphery of each inner convex edge (15), and the two amplitude modulation units (5) can cooperate to adjust the effective flow length of each gap (3) in the water cooling channel (14), so that the water cooling channel (14) on the housing adopts an appropriate water cooling flow path to cool and dissipate heat when the motor is cooled in different working states; Two slots (3) located to the left and right of the wide slot (2) are combined to form a whole; a through opening (34) is provided at the center of the inner wall of the housing (1); the two slots (3) are connected via the through opening (34); sealing strips (31) are symmetrically arranged in the slots (3); inner ribs (32) are fixed between the sealing strips (31); and strip holes (33) are provided at both ends of the inner ribs (32); The outer wall of the housing (1) is axially provided with a side convex edge (16) at each slot (3), a guide groove is provided in the side convex edge (16), and a flow hole is radially provided at each side convex edge (16) on the housing (1), and the guide groove is correspondingly connected to each slot (3) through the flow hole; The side convex edge (16) on the casing (1) located on the same side of each wide channel (2) is connected to a water inlet pipe, and the side convex edge (16) located on the other side of each wide channel (2) is connected to a drainage pipe.

2. A servo motor housing structure for facilitating heat dissipation according to claim 1, characterized in that: The number of the gap channels (3) in the water cooling channel (14) is twice the number of the wide channels (2) in the oil cooling channel (13), and each of the wide channels (2) is distributed in the middle of two adjacent gap channels (3), and the overall width of the wide channels (2) extends to and covers two-thirds of the gap channels (3).

3. A servo motor housing structure for facilitating heat dissipation according to claim 2, characterized in that: The length of the gap channel (3) is smaller than the length of the wide channel (2).

4. A servo motor housing structure for facilitating heat dissipation according to claim 1, characterized in that: The oil inlet ring (4) is provided with a plurality of oil holes (41) corresponding to the wide channels (2), and each of the oil holes (41) is sealed and connected to the wide channels (2). An annular cavity (42) is provided inside the oil inlet ring (4), and the annular cavity (42) is connected to each of the wide channels (2) through the oil holes (41). An outer hole (43) is provided on the side wall of the oil inlet ring (4), and an oil delivery pipe is connected to the outer hole (43).

5. A servo motor housing structure for facilitating heat dissipation according to claim 4, characterized in that: The diameter of the oil hole (41) on the oil inlet ring (4) close to the outer hole (43) is smaller than the diameter of the oil hole (41) far from the outer hole (43); and the internal structure of the oil discharge ring and the oil inlet ring (4) is completely the same.

6. The servo motor housing structure for facilitating heat dissipation according to claim 1, characterized in that: The amplitude modulation unit (5) comprises a shaft ring (51), the shaft ring (51) is coaxially slidably connected to the inner convex edge (15) of the housing (1), each of the gaps (3) is slidably connected to a baffle plate (52), a sliding groove is provided in the middle of the baffle plate (52), the baffle plate (52) is slidably assembled with the inner rib (32) through the sliding groove, and a plurality of support rods (53) are axially connected to the shaft ring (51), one end of each of the support rods (53) passes through the sealing strip (31) and is connected to the baffle plate (52); A rubber strip (54) is fixed to a side of the baffle plate (52) away from the support rod (53); the rubber strip (54) slides horizontally along the strip hole (33) and is arranged vertically with the strip hole (33); the rubber strip (54) is in sealing sliding contact with the gap channel (3).

7. A servo motor housing structure for facilitating heat dissipation according to claim 6, characterized in that: The support rod (53) is slidably connected to the shaft ring (51), and a spring is sleeved on the support rod (53), and the other end of the spring is in abutment with the baffle plate (52); a plurality of guide sleeves (55) are rotatably connected to the shaft ring (51), and each of the guide sleeves (55) is sleeved on the outside of the support rod (53) through a threaded engagement action. The guide sleeve (55) drives the support rod (53) to slide axially along the housing (1) in a forward and reverse rotation adjustment, thereby accurately adjusting the effective flow length and distribution path of each gap (3).

8. The servo motor housing structure for facilitating heat dissipation according to claim 6, characterized in that: An adjusting ring (17) is rotatably connected to the casing (1), and a threaded ring (56) is fixed to one side of the shaft ring (51) via an extension rib, the adjusting ring (17) and the threaded ring (56) being threadedly connected, so that the water cooling channel (14) in the casing (1) can be flexibly adjusted via the amplitude modulation unit (5) during the rotation adjustment of the adjusting ring (17).

9. A servo motor housing structure for facilitating heat dissipation according to claim 8, characterized in that: The water inlet pipe connected to the outside of the side convex edge (16) uses a variety of pumping liquid pressures to send cold water medium into the gap channel (3), and when the pumping liquid pressure is higher than a threshold value, each gap channel (3) gradually expands its internal effective flow length.

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