CN112531974B

CN112531974B - Oil-cooled motor

Info

Publication number: CN112531974B
Application number: CN202011361474.0A
Authority: CN
Inventors: 艾朝军
Original assignee: Zhejiang Fangyuan Sifu Electromechanical Co ltd
Current assignee: Zhejiang Fangyuan Sifu Electromechanical Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2022-05-03
Anticipated expiration: 2040-11-27
Also published as: CN112531974A

Abstract

The utility model relates to an oil cold type motor, which comprises a motor body, motor body includes the shell, the stator, rotor and pivot, motor body is equipped with the installation cavity, the shell includes the front end housing, the rear end cap, a housing, the pivot cover is equipped with the front end bearing, the front end housing is equipped with the through-hole, the rear end housing is equipped with fluid passageway one, the front end housing is equipped with fluid passageway two, the front end housing is equipped with leads oil pipe, the rear end cap is equipped with the rear end bearing, the outer wall of front end housing is equipped with mends oil passageway one, mend oil passageway two, the front end housing is equipped with leads the oil groove, the front end housing, the rear end cap all is equipped with the sealing washer, be equipped with cooling channel in the casing, the casing has seted up the pin hole that supplies the cable to insert, install flexible seal spare in the pin hole. Through setting up the through-hole, leading oil pipe, during the fluid that makes the vacuum pump oil storage chamber can get into the installation cavity of this motor, cools down stator, rotor, makes this motor be difficult for impaired because of overheated, through setting up cooling channel, has further improved the heat-sinking capability of this motor.

Description

Oil-cooled motor

Technical Field

The application relates to the technical field of motors, in particular to an oil cooling type motor.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to an electromagnetic induction law. Its main function is to generate driving torque as power source of electric appliance or various machines. The vacuum pump is a device or equipment which uses mechanical, physical, chemical or physical-chemical methods to pump air to a pumped container to obtain vacuum, a driving source of the vacuum pump adopts a motor, and the vacuum pump is generally provided with an oil storage cavity and an oil throwing plate to lubricate a bearing sleeved on a rotating shaft.

In view of the above-mentioned related art, the inventor believes that after the motor is operated for a long time, heat is generated due to friction between the resistor and the inside of the motor, and the heat is too much, which may affect the normal operation of the motor.

Disclosure of Invention

In order to make the motor be difficult for damaging because of overheated, this application provides an oil cooling formula motor.

The application provides an oil-cooled motor adopts following technical scheme:

the utility model provides an oil-cooled motor, includes motor body, motor body includes shell, stator, rotor and pivot, motor body is equipped with the installation cavity that supplies the rotor installation, the shell includes front end housing, rear end cap, casing, the pivot cover is equipped with the front end bearing, the front end housing is located the oil storage intracavity of vacuum pump, the front end housing is equipped with the through-hole of intercommunication installation cavity, the outer wall of front end bearing is fixed on the inner wall of through-hole, but the front end bearing oil feeding liquid passes through.

Through adopting above-mentioned technical scheme, the fluid accessible vacuum pump of vacuum pump oil storage intracavity gets rid of the whipping of oiled plate, and its oil drips and can get into the through-hole, and rethread front end bearing gets into the installation cavity to cool off rotor and stator, in order to reduce the temperature on rotor, stator surface, fluid can gasify when the high temperature, reduces the temperature on stator and rotor surface, prevents that the winding on rotor, the stator from burning out because of the high temperature.

Preferably, the rear end cap is provided with a first oil passage, the front end cap is provided with a second oil passage, the front end cap is provided with an oil guide pipe used for communicating the first oil passage and the second oil passage, two ends of the oil guide pipe are respectively connected with the front end cap and the rear end cap, the end part of the first oil passage is communicated with the installation cavity, the end part of the second oil passage is communicated with the oil storage cavity of the vacuum pump, and the height of the second oil passage is higher than that of the first oil passage.

Through adopting above-mentioned technical scheme, the oil storage chamber accessible of vacuum pump gets into the port of fluid passageway two through the whipping of getting rid of the oiled plate, later fluid can get into the other end of installation cavity in fluid passageway one from fluid passageway two with the help of gravity, makes fluid can get into the both ends of installation cavity simultaneously, cools off the both ends of stator, rotor respectively to improve the cooling effect.

Preferably, the rear end cover is provided with a rear end bearing, the rear end bearing is sleeved on the rotating shaft, and a port of the first oil liquid channel penetrates through the side face of the rear end bearing, which deviates from the installation cavity, and is opposite to a ball of the rear end bearing.

By adopting the technical scheme, the oil can be lubricated by the ball of the rear end bearing after flowing out of the oil channel I by the position of the oil channel I, so that the rotation resistance of the rear end bearing is reduced, and the heat generated by the rotation friction of the bearing and the abrasion of the bearing are reduced.

Preferably, the outer wall of the front end cover is provided with a first oil supplementing channel, the outer wall of the rear end cover is provided with a second oil supplementing channel, and the first oil supplementing channel and the second oil supplementing channel are both communicated with the oil guide pipe.

Through adopting above-mentioned technical scheme, the setting of oil supplementing channel one and oil supplementing channel two, the personnel of being convenient for mend oil to the oil storage chamber of vacuum pump.

Preferably, the surface of front end housing orientation vacuum pump oil storage chamber is equipped with leads the oil groove, lead the oil groove slope and set up, the port of fluid passageway two is located leads on the lower terminal wall of oil groove.

Through adopting above-mentioned technical scheme, lead the setting of oil groove, can collect, lead to brushing the fluid of leading in the oil groove, with fluid water conservancy diversion to fluid passageway two in, increase the entering volume of fluid.

Preferably, the front end cover and the rear end cover are respectively provided with a sealing ring for sealing a gap between the front end cover and the housing.

Through adopting above-mentioned technical scheme, the setting of sealing washer makes during external air is difficult for getting into the installation cavity, keeps the vacuum of installation cavity, prevents simultaneously that the fluid in the installation cavity from leaking.

Preferably, a cooling channel is arranged in the shell, the cooling channel is spirally arranged around the axis of the shell, and two ends of the cooling channel are communicated with the water pipe.

Through adopting above-mentioned technical scheme, cooling channel's setting has further increased the heat-sinking capability of this motor, makes this motor be difficult for damaging because of the high temperature.

Preferably, the casing is provided with a lead hole for the cable to be connected, an elastic sealing element is installed in the lead hole, the circumferential side wall of the elastic sealing element is attached to the inner wall of the lead hole, the elastic sealing element is provided with a through hole for the cable to pass through, the inner wall of the lead hole is provided with an abutting surface for abutting against the end wall of the elastic sealing element, the inner wall of the lead hole is in threaded connection with a pressing element, and the pressing element is used for abutting against the end part of the elastic sealing element, which is deviated from the abutting surface, so that the aperture of the through hole is reduced.

Through adopting above-mentioned technical scheme, personnel can adjust the press part, make it inwards feed, make press part and elastic sealing element deviate from the tip of butt face and offset tightly, make elastic sealing element pressurized deformation, because the both ends of elastic sealing element all are supported with the circumference lateral wall and are pressed, the inside deformation of elastic sealing element reduces the aperture of via hole, make the pore wall of via hole and cable hug closely, eliminate the clearance between elastic sealing element and the cable, make outside air be difficult for getting into this motor through this clearance, and influence the vacuum of vacuum pump.

Preferably, the elastic sealing element comprises a pressing plate and an elastic block, the pressing plate is arranged at two ends of the elastic block along the axial direction of the lead hole, the two opposite surfaces of the pressing plate are respectively used for abutting against the abutting surface and the pressing part, and the two opposite surfaces of the pressing plate are respectively fixedly connected with two ends of the elastic block.

Through adopting above-mentioned technical scheme, the piece can exert pressure to the clamp plate, by the surface that the clamp plate evenly transmitted the elastic block with pressure, makes each part of elastic block evenly deform, and two clamp plates can restrict the axial deformation of elastic block simultaneously, and the circumference deformation of elastic block is restricted by the pore wall of pin hole simultaneously, makes the deformation of elastic block concentrate in via hole department, makes the pore wall of via hole can hug closely with the cable.

In summary, the present application includes at least one of the following beneficial technical effects:

through the arrangement of the through hole and the oil guide pipe, oil in the oil storage chamber of the vacuum pump can enter the installation cavity of the motor to cool the stator and the rotor, so that the motor is not easy to be damaged due to overheating;

the oil guide groove is arranged, so that oil can be guided, and the oil can conveniently enter the oil guide pipe;

through setting up cooling channel, further improved the heat-sinking capability of this motor.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present application.

Fig. 2 is a first structural schematic diagram of an embodiment of the present application.

Fig. 3 is a second structural diagram of the embodiment of the present application.

Fig. 4 is an enlarged view of fig. 1 at a.

Description of reference numerals: 1. a motor body; 11. a housing; 111. a front end cover; 112. a rear end cap; 113. a housing; 114. an oil liquid channel I; 115. an oil liquid channel II; 116. a first oil supplementing channel; 117. a second oil supplementing channel; 118. an oil guide groove; 119. a seal ring; 12. a stator; 13. a rotor; 14. a rotating shaft; 15. a mounting cavity; 16. a front end bearing; 161. a through hole; 162. a rear end bearing; 17. an oil guide pipe; 18. a cooling channel; 19. a wire hole; 191. an abutting surface; 2. an elastomeric seal; 21. pressing the plate tightly; 22. an elastic block; 23. a via hole; 24. a pressing member; 3. an oil control assembly; 31. adjusting the slider; 32. a top brace rod; 33. adjusting the spring; 34. an air spring; 4. a pressing device; 41. a drive piston; 42. a wedge block; 43. a pressure supply channel.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses oil-cooled motor. Referring to fig. 1, an oil-cooled motor includes a motor body 1, the motor body 1 includes a housing 11, a stator 12, a rotor 13 and a rotating shaft 14, the stator 12 is fixed on an inner wall of the housing 11, the rotor 13 is sleeved on the rotating shaft 14, the motor body 1 is provided with an installation cavity 15 for the rotor 13 to be installed, and the stator 12 surrounds the installation cavity 15.

Referring to fig. 1 and 2, the housing 11 includes a front end cover 111, a rear end cover 112, and a housing 113, where the front end cover 111 has a through hole 161, the through hole 161 penetrates through the mounting cavity 15, a front end bearing 16 is fixed on an inner wall of the through hole 161, the rear end cover 112 has a rear end bearing 162, the front end bearing 16 and the rear end bearing 162 are both coaxially sleeved on the rotating shaft 14, an outer surface of the front end cover 111 is located in an oil storage cavity of the vacuum pump, the front end bearing 16 can allow oil to pass through, the oil in the oil storage cavity of the vacuum pump can be swung by an oil swinging plate of the vacuum pump, oil droplets of the oil can enter the through hole 161, and then enter the mounting cavity 15 through the front end bearing 16, so as to cool the rotor 13 and the stator 12, so as to reduce temperatures on surfaces of the rotor 13 and the stator 12, and gasify the oil when the temperatures are too high, so as to reduce the temperature on the surfaces of the stator 13 and the rotor 12, and prevent windings on the rotor 13 and the stator 12 from being burned due to too high temperatures.

The rear end cover 112 is provided with a first oil passage 114, the front end cover 111 is provided with a second oil passage 115, the front end cover 111 is provided with an oil guide pipe 17, two ends of the oil guide pipe 17 are detachably connected with the front end cover 111 and the rear end cover 112 respectively, one end of the first oil passage 114 is communicated with the installation cavity 15, the other end of the first oil passage 114 is communicated with the oil guide pipe 17, one end of the second oil passage 115 is located on the surface, facing the oil storage cavity, of the front end cover 111, and the other end of the second oil passage 115 is communicated with the oil guide pipe 17.

The port of the first oil passage 114 is close to the side face, away from the installation cavity 15, of the rear end bearing 162 and is opposite to the ball of the rear end bearing 162, the position of the port of the first oil passage 114 enables oil to flow out of the first oil passage 114, the rear end bearing 162 can be lubricated, the rotating resistance of the rear end bearing 162 is reduced, and heat generated by rotating friction of the bearing is reduced.

The surface that front end housing 111 orientation vacuum pump oil storage chamber is equipped with leads oil groove 118, leads oil groove 118 and is the bar, leads oil groove 118 slope setting, and the port of the second 115 of fluid passageway is located leads on the lower end wall of oil groove 118. The oil guide groove 118 is arranged to collect and guide oil brushed into the oil guide groove 118, and guide the oil to the second oil passage 115 to increase the entering amount of the oil.

The side wall of the oil guide groove 118 is provided with the oil control assembly 3, the oil control assembly 3 comprises an adjusting slider 31 and a top support rod 32, the top wall of the oil guide groove 118 is provided with a chute, the adjusting slider 31 is connected with the inner wall of the chute in a sliding way, the sliding direction of the adjusting slider 31 is along the width direction of the oil guide groove 118, the bottom wall of the chute is provided with an adjusting spring 33, the elastic force direction of the adjusting spring 33 is along the sliding direction of the adjusting slider 31, two ends of the adjusting spring 33 are respectively and fixedly connected with the bottom wall of the chute and the adjusting slider 31, the adjusting spring 33 is a mechanical spring, the bottom wall of the oil guide groove 118 is provided with an air spring 34, and one end of the top stay 32 is fixedly connected with the air spring 34, the other end of the top stay 32 is abutted against the regulating slider 31, the axial direction of the top stay 32 is along the sliding direction of the regulating slider 31, and the elastic direction of the air spring 34 is also along the sliding direction of the regulating slider 31.

When the vacuum pump is vacuumized, because the vacuum degree is high, the load of the motor is larger, the heat generation is high, the cooling of the motor needs to be enhanced, the elastic force of the air spring 34 depends on the air pressure difference between the internal air and the outside, so when the vacuum degree in the oil storage chamber of the vacuum pump is increased, the resisting pressure of the air spring 34 and the top supporting rod 32 on the adjusting slider 31 is increased, and the pressure of the adjusting spring 33 is not influenced by the change of the vacuum degree, therefore, when the vacuum degree of the oil storage chamber is increased, the adjusting slider 31 is contracted towards the inside of the sliding groove, the notch of the oil guide groove 118 is enlarged, more oil can enter the oil guide groove 118, is guided into the oil guide channel two 115 by the oil guide groove 118, enters the installation cavity 15 to cool the stator 12 and the rotor 13, when the vacuum degree is not high, the oil entering the oil guide groove 118 by the adjusting slider 31 is blocked, and the oil amount entering the oil channel two 115 is reduced, the motor can prevent the excessive oil entering the installation cavity 15 from influencing the operation of the motor.

The front end cover 111 is provided with a first oil supplementing channel 116, the rear end cover 112 is provided with a second oil supplementing channel 117, the first oil supplementing channel 116 and the second oil supplementing channel 117 are both communicated with the oil guide pipe 17, the end part of the first oil supplementing channel 116 penetrates through the outer surface of the front end cover 111 to be communicated with the outside, so that personnel can supplement oil conveniently, the end part of the second oil supplementing channel 117 penetrates through the outer surface of the rear end cover 112, the function of the second oil supplementing channel is the same as that of the first oil supplementing channel 116, and the oil supplementing channel is sealed by a sealing plug when oil supplementing is not performed.

The front end cover 111 and the rear end cover 112 are both provided with a sealing ring 119 for sealing a gap between the front end cover 111 and the housing 113, the sealing ring 119 is provided with two sealing rings on the front end cover 111, the two sealing rings 119 are respectively used for sealing a gap between the front end cover 111 and the stator 12 and a gap between the front end cover 111 and the housing 113, the sealing ring 119 is also provided with two sealing rings on the rear end cover 112, and the two sealing rings 119 are respectively used for sealing a gap between the rear end cover 112 and the stator 12 and a gap between the front end cover 111 and the housing 113 so as to prevent oil in the installation cavity 15 from leaking into the outside or prevent outside air from flowing into the installation cavity 15.

Referring to fig. 1 again, the housing 113 is provided with a cooling channel 18 therein, the cooling channel 18 is located in a wall of the housing 113, the cooling channel 18 is spirally arranged around an axis of the housing 113, and two ends of the cooling channel 18 are used for communicating with a water pipe. The arrangement of the cooling channel 18 can increase the heat dissipation capacity of the motor, so that the motor is not easy to be damaged due to overhigh temperature.

Referring to fig. 3 and 4, the casing 113 is provided with a lead hole 19 for cable access, the lead hole 19 penetrates the surface of the stator 12, the lead hole 19 is used for a cable passing through the stator 12, the elastic sealing element 2 is installed in the lead hole 19, a circumferential side wall of the elastic sealing element 2 is attached to an inner wall of the lead hole 19, a through hole 23 for the cable to pass through is formed in the elastic sealing element 2, an abutting step is arranged on the inner wall of the lead hole 19, an abutting surface 191 for abutting against an end wall of the elastic sealing element 2 is arranged on the inner wall of the lead hole 19, and the abutting surface 191 is a surface of the abutting step facing an outer port of the lead hole 19.

The inner wall of the lead hole 19 is provided with a pressing part 24, the thread section of the inner wall of the lead hole 19 is close to the outer end of the lead hole 19, the pressing part 24 is in threaded connection with the thread section, the pressing part 24 is used for pressing against the end part of the elastic sealing element 2 departing from the abutting surface 191 to press against the elastic sealing element 2, so that the elastic sealing element 2 deforms and the aperture of the through hole 23 is reduced, the hole wall of the through hole 23 is tightly attached to a cable, the gap between the elastic sealing element 2 and the cable is eliminated, and the external air is difficult to enter the motor through the gap to influence the vacuum degree of the vacuum pump.

The elastic sealing element 2 comprises a pressing plate 21 and an elastic block 22, wherein one pressing plate 21 is fixedly arranged at each axial end of the elastic block 22 along the lead hole 19, the surfaces of the two pressing plates 21 are respectively used for abutting against an abutting surface 191 and a pressing part 24, the pressing part 24 can apply pressure to the pressing plate 21, the pressing plate 21 uniformly transmits the pressure to the surface of the elastic block 22, all parts of the elastic block 22 are uniformly deformed, meanwhile, the two pressing plates 21 can limit the axial deformation of the elastic block 22, meanwhile, the circumferential deformation of the elastic block 22 is limited by the hole wall of the lead hole 19, the deformation of the elastic block 22 is concentrated at the position of a through hole 23, and the hole wall of the through hole 23 can be tightly attached to a cable.

The inner wall of the lead hole 19 is provided with a pressing device 4, the pressing device 4 comprises a driving piston 41 and a wedge block 42, the shell 113 is provided with a pressure supply channel 43, one end of the pressure supply channel 43 is communicated with the cooling channel 18 to obtain water pressure, the other end of the pressure supply channel 43 is positioned on the inner wall of the lead hole 19, the driving piston 41 is connected with the inner wall of the pressure supply channel 43 in a sliding mode and seals the pressure supply channel 43, the cooling channel 18 is separated from the lead hole 19, the wedge block 42 is fixedly connected to the side, facing the lead hole 19, of the driving piston 41, the wedge face of the wedge block 42 faces an abutting face 191, and the wedge face of the wedge block 42 abuts against the side of the pressing plate 21, close to the end of the lead hole 19.

When the vacuum pump operates, the motor can continuously generate heat, when the required vacuum degree is higher, the motor operating power is larger, the heat generation is larger, in order to cool the motor in time, the flow speed in the cooling channel 18 needs to be improved, the flow speed is generally obtained by a method for improving the water pressure, when the motor operates at high power, the water pressure in the driving channel is larger, the water pressure acts on the side of the pressing plate 21 through the piston and the wedge block 42, the pressing plate 21 further presses the elastic sealing element 2, the sealing performance of the elastic sealing element 2 and the surface of the cable is further improved, and the outside air is enabled not to enter the motor easily.

The implementation principle of the oil-cooled motor in the embodiment of the application is as follows: when the motor operates, the oil brushing plate on the vacuum pump can be driven to move to throw oil in the oil storage chamber of the vacuum pump to the periphery, one part of thrown oil drops can enter the through hole 161, then the thrown oil drops enter the mounting cavity 15 through the front end bearing 16, so that part of the rotor 13 and part of the stator 12 close to the through hole 161 are cooled, the other part of the thrown oil drops can enter the oil guide groove 118 and flow to the oil channel II 115 along the oil guide groove 118, then the oil flows to the other end of the mounting cavity 15 from the oil channel II 115 to the oil channel I114 by virtue of gravity, the stator 12 and the part of the rotor 13 far away from the through hole 161 are cooled, so that the cooling effect is improved, the temperature of the surfaces of the rotor 13 and the stator 12 is reduced, the oil can be gasified when the temperature is too high, the temperature of the surfaces of the stator 13 is reduced, and the winding on the rotor 13 and the stator 12 is prevented from being burnt out due to overhigh temperature.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an oil-cooled motor, includes motor body (1), motor body (1) includes shell (11), stator (12), rotor (13) and pivot (14), motor body (1) is equipped with installation cavity (15) that supply rotor (13) to install, shell (11) includes front end housing (111), rear end housing (112), casing (113), pivot (14) cover is equipped with front end bearing (16), its characterized in that: the front end cover (111) is positioned in an oil storage cavity of the vacuum pump, the front end cover (111) is provided with a through hole (161) communicated with the installation cavity (15), the outer wall of the front end bearing (16) is fixed on the inner wall of the through hole (161), and the front end bearing (16) can be used for oil to pass through;

the rear end cover (112) is provided with a first oil passage (114), the front end cover (111) is provided with a second oil passage (115), the front end cover (111) is provided with an oil guide pipe (17) used for communicating the first oil passage (114) with the second oil passage (115), two ends of the oil guide pipe (17) are respectively connected with the front end cover (111) and the rear end cover (112), the end part of the first oil passage (114) is communicated with the installation cavity (15), the end part of the second oil passage (115) is communicated with an oil storage cavity of the vacuum pump, and the height of the second oil passage (115) is higher than that of the first oil passage (114); an oil guide groove (118) is formed in the surface, facing the oil storage cavity of the vacuum pump, of the front end cover (111), the oil guide groove (118) is obliquely arranged, and a port of the oil liquid channel II (115) is located on the lower end wall of the oil guide groove (118); the side wall of the oil guide groove (118) is provided with an oil control assembly (3), the oil control assembly (3) comprises an adjusting slider (31) and a top support rod (32), the top wall of the oil guide groove (118) is provided with a sliding groove, the adjusting slider (31) is connected to the inner wall of the sliding groove in a sliding manner, the sliding direction of the adjusting slider (31) is along the width direction of the oil guide groove (118), the bottom wall of the sliding groove is provided with an adjusting spring (33), the elastic direction of the adjusting spring (33) is along the sliding direction of the adjusting slider (31), two ends of the adjusting spring (33) are respectively and fixedly connected with the bottom wall of the sliding groove and the adjusting slider (31), the adjusting spring (33) is a mechanical spring, the bottom wall of the oil guide groove (118) is provided with an air spring (34) and an installation groove for installing the air spring (34), one end of the top support rod (32) is fixedly connected with the air spring (34), the other end of the top support rod is abutted against the adjusting slider (31), the axial direction of the top support rod (32) is along the sliding direction of the adjusting slider (31), the direction of the spring force of the air spring (34) is also along the sliding direction of the regulating slider (31).

2. An oil-cooled electric machine as claimed in claim 1, in which: the rear end cover (112) is provided with a rear end bearing (162), the rear end bearing (162) is sleeved on the rotating shaft (14), and a port of the oil passage I (114) penetrates through the side face, deviating from the installation cavity (15), of the rear end bearing (162) and is right opposite to a ball of the rear end bearing (162).

3. An oil-cooled electric machine as claimed in claim 1, in which: the outer wall of the front end cover (111) is provided with a first oil supplementing channel (116), the outer wall of the rear end cover (112) is provided with a second oil supplementing channel (117), and the first oil supplementing channel (116) and the second oil supplementing channel (117) are communicated with the oil guide pipe (17).

4. An oil-cooled electric machine as claimed in claim 1, in which: and the front end cover (111) and the rear end cover (112) are respectively provided with a sealing ring (119) for sealing a gap between the front end cover and the shell (113).

5. An oil-cooled electric machine as claimed in claim 1, in which: be equipped with cooling channel (18) in casing (113), cooling channel (18) are the spiral setting around the axis of casing (113), the both ends of cooling channel (18) are used for with the water pipe intercommunication.

6. An oil-cooled electric machine as claimed in claim 1, in which: the cable connector is characterized in that a lead hole (19) for cable access is formed in the shell (113), an elastic sealing element (2) is installed in the lead hole (19), the circumferential side wall of the elastic sealing element (2) is attached to the inner wall of the lead hole (19), a through hole (23) for a cable to pass through is formed in the elastic sealing element (2), an abutting surface (191) for abutting against the end wall of the elastic sealing element (2) is formed in the inner wall of the lead hole (19), a pressing piece (24) is connected to the inner wall of the lead hole (19) in a threaded mode, and the pressing piece (24) is used for abutting against the end portion, deviating from the abutting surface (191), of the elastic sealing element (2) so that the aperture of the through hole (23) is reduced.

7. An oil-cooled electric machine as claimed in claim 6, in which: elastic sealing element (2) all are equipped with one including tight clamp plate (21), elastic block (22), tight clamp plate (21) in elastic block (22) along the axial both ends of pin hole (19), two the face that tight clamp plate (21) carried on the back mutually is used for respectively keeping out with butt surface (191), holding part (24), two the face that tight clamp plate (21) is relative respectively with the both ends fixed connection of elastic block (22).