Oil-cooled motor

Abstract

The utility model discloses an oil-cooled motor, which relates to the technical field of motors and comprises a motor casing and a wire holder, a motor wire outlet is arranged on the motor casing, and the wire holder comprises a holder body arranged at the motor wire outlet and a wiring assembly arranged on the holder body. One end of the wiring assembly is electrically connected with a stator outgoing line in the motor shell, and the other end of the wiring assembly is electrically connected with a three-phase line outside the motor shell; a first sealing structure is arranged between the seat body and the side wall of the motor wire outlet, a second sealing structure is arranged between the wiring assembly and the seat body, and the first sealing structure and the second sealing structure are used for sealing cooling oil in the motor shell. The oil-cooled motor provided by the utility model not only solves the problem of oil leakage of the wire outlet of the motor, but also improves the assembly efficiency of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to an oil-cooled motor. Background Art

[0002] An oil-cooled motor is a motor that uses engine oil as a cooling oil. Due to the characteristics of the engine oil itself, such as local non-magnetic conductivity, non-flammability, non-conductivity, and good heat conduction, it has no influence on the magnetic circuit of the motor and has a higher heat dissipation efficiency. Therefore, oil-cooled motors are widely used in different fields and industries.

[0003] However, for an oil-cooled motor with a cooling oil passing through its inner cavity, since the cooling oil directly contacts the stator lead-out wire of the motor, and the stator lead-out wire needs to be connected to the three-phase wire outside the motor, it is very easy to have an oil leakage problem at the motor wire outlet. Therefore, the oil-cooled motor needs to design an oil sealing system to ensure that the cooling oil cannot leak to the outside of the motor, and also needs to design a wiring system to ensure that the stator lead-out wire can be connected to the outside of the motor, which is a difficult problem for those skilled in the art. Summary of the Utility Model

[0004] Aiming at the above-mentioned defects existing in the prior art, the utility model aims to provide an oil-cooled motor with good sealing performance, which solves the problem of oil leakage at the motor wire outlet.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An oil-cooled motor, comprising a motor housing and a wiring seat. A motor wire outlet is provided on the motor housing. The wiring seat includes a seat body provided at the motor wire outlet and a wiring component provided on the seat body. One end of the wiring component is electrically connected to the stator lead-out wire inside the motor housing, and the other end of the wiring component is electrically connected to the three-phase wire outside the motor housing. A first sealing structure is provided between the seat body and the side wall of the motor wire outlet, and a second sealing structure is provided between the wiring component and the seat body. The first sealing structure and the second sealing structure are used to seal the cooling oil inside the motor housing.

[0007] Wherein, an installation portion is protrudingly provided on the seat body, and the installation portion is inserted into the motor wire outlet. The first sealing structure is provided between the installation portion and the side wall of the motor wire outlet.

[0008] Wherein, the first sealing structure is a first sealing ring. An annular first sealing groove is provided on the installation portion, and the first sealing ring is arranged in the first sealing groove.

[0009] The wiring assembly includes a copper seat penetrating the seat body and the mounting portion, and a stator output copper bar welded on the copper seat, the second sealing structure is arranged between the copper seat and the mounting portion, and the stator output copper bar is electrically connected to the stator lead wire.

[0010] Wherein, the second sealing structure is a second sealing ring, an annular second sealing groove is arranged on the copper seat, and the second sealing ring is arranged in the second sealing groove.

[0011] Wherein, the copper seat is electrically connected to the three-phase line through a transfer copper busbar.

[0012] Wherein, two ends of the transfer copper busbar are electrically connected to the copper seat and the three-phase line through bolts respectively.

[0013] Wherein, the stator outgoing copper bar and the transfer copper bar are both formed by stacking multiple layers of flexible copper foil.

[0014] Wherein, a junction box is arranged on the motor housing, and the junction seat is located in the junction box.

[0015] Wherein, the junction box is provided with a line-following hole, and the three-phase line extends into the junction box through the line-following hole.

[0016] By adopting the above technical solution, the beneficial effects of the utility model are:

[0017] The oil-cooled motor provided by the utility model realizes double sealing by arranging a first sealing structure between the base body and the side wall of the motor outlet, and arranging a second sealing structure between the wiring assembly and the base body, thereby effectively preventing the cooling oil from flowing out of the motor outlet and ensuring the sealing reliability of the motor outlet. The utility model has the advantages of good sealing, simple structure, convenient installation, high reliability and low cost, which not only solves the problem of oil leakage at the motor outlet, but also improves the assembly efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial structural schematic diagram of the oil-cooled motor of the utility model;

[0019] Figure 2 yes Figure 1 A partial cross-sectional view of

[0020] Figure 3 yes Figure 2 The structural diagram of the middle terminal block;

[0021] Figure 4 yes Figure 3 A schematic diagram of the structure of the middle seat body;

[0022] Figure 5 yes Figure 2Schematic diagram of the structure of the copper seat;

[0023] In the figure: 1, motor housing; 2, seat body; 21, mounting part; 22, adapter copper bar; 3, wiring assembly; 31, copper seat; 32, stator outgoing copper bar; 4, first sealing ring; 5, second sealing ring; 6, first bolt; 7, second bolt; 8, junction box; 81, wire guiding hole; 9, third bolt. Specific implementation mode

[0024] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] As Figures 1 to 5 shown, this embodiment discloses an oil-cooled motor, including a motor housing 1 and a wiring seat. A motor outgoing line port is provided on the motor housing 1. The wiring seat includes a seat body 2 provided at the motor outgoing line port and a wiring assembly 3 provided on the seat body 2. One end of the wiring assembly 3 is electrically connected to the stator lead wire inside the motor housing 1, and the other end of the wiring assembly 3 is electrically connected to the three-phase line outside the motor housing 1; a first sealing structure is provided between the seat body 2 and the side wall of the motor outgoing line port, and a second sealing structure is provided between the wiring assembly 3 and the seat body 2. The first sealing structure and the second sealing structure are used to seal the cooling oil inside the motor housing 1.

[0026] The oil-cooled motor in this embodiment realizes double sealing by providing a first sealing structure between the seat body 2 and the side wall of the motor outgoing line port and a second sealing structure between the wiring assembly 3 and the seat body 2, effectively preventing the cooling oil from flowing out of the motor outgoing line port, ensuring the sealing reliability of the motor outgoing line port, and having the advantages of good sealing, simple structure, convenient installation, high reliability and low cost. It not only solves the problem of oil leakage at the motor outgoing line port, but also improves the assembly efficiency of the motor.

[0027] A mounting part 21 protrudes from the seat body 2 in this embodiment. The mounting part 21 is inserted into the motor outgoing line port, and the first sealing structure is provided between the mounting part 21 and the side wall of the motor outgoing line port. With this setting, the first-stage sealing at the motor outgoing line port is realized, improving the sealing effect.

[0028] Specifically, the first sealing structure is a first sealing ring 4. An annular first sealing groove is provided on the mounting part 21, and the first sealing ring 4 is arranged in the first sealing groove.

[0029] In this embodiment, the wiring assembly 3 includes a copper seat 31 passing through the seat body 2 and the mounting portion 21, and a stator lead-out copper busbar 32 welded to the copper seat 31. A second sealing structure is disposed between the copper seat 31 and the mounting portion 21, and the stator lead-out copper busbar 32 is electrically connected to the stator lead wire. With such an arrangement, a second layer of sealing at the motor wire outlet is achieved, further improving the sealing effect.

[0030] Specifically, three groups of wiring assemblies 3 are provided. The copper seats 31 of the three groups of wiring assemblies 3 are respectively electrically connected to the three phase lines of the three-phase line, and the stator lead-out copper busbars 32 of the three groups of wiring assemblies 3 are respectively electrically connected to the corresponding stator lead wires. Three through holes passing through the seat body 2 and the mounting portion 21 are provided on the seat body 2 and the mounting portion 21. The three copper seats 31 are respectively installed in the corresponding through holes. The second sealing structure is a second sealing ring 5. An annular second sealing groove is provided on the copper seat 31, and the second sealing ring 5 is disposed in the second sealing groove.

[0031] In this embodiment, two first sealing rings 4 and two second sealing rings 5 are both arranged at intervals. With such an arrangement, the sealing effect is further improved. Of course, more can be arranged, and this embodiment does not limit this.

[0032] Since the O-ring has the advantages of simple structure, easy manufacturing, small friction, small groove size, good sealing performance, etc., therefore, the first sealing ring 4 and the second sealing ring 5 in this embodiment are both preferably O-rings.

[0033] In order to facilitate the electrical connection between the copper seat 31 and the three-phase line, a transfer copper busbar 22 is provided on the seat body 2 in this embodiment, and the copper seat 31 is electrically connected to the three-phase line through the transfer copper busbar 22.

[0034] In this embodiment, both ends of the transfer copper busbar 22 are electrically connected to the copper seat 31 and the three-phase line through bolts respectively. With such an arrangement, not only is the disassembly and assembly convenient, improving the assembly efficiency, but also the connection reliability is improved.

[0035] Specifically, through holes are respectively provided at both ends of the transfer copper busbar 22, threaded holes are provided on the copper seat 31, and a first bolt 6 passes through the through hole at one end of the transfer copper busbar 22 and is threadedly connected to the threaded hole on the copper seat 31; a second bolt 7 passes through the through hole at the other end of the transfer copper busbar 22 and is threadedly connected to the seat body 2, and the phase line of the three-phase line is pressed between the head of the second bolt 7 and the transfer copper busbar 22.

[0036] The stator outgoing copper bar 32 and the transfer copper bar 22 in this embodiment are both formed by stacking multiple layers of flexible copper foil. The soft copper bar with the above structure can not only adapt well to the distance change between the connectors, accommodate assembly errors, reduce assembly difficulty, and improve assembly quality and efficiency, but also avoid applying shear stress to the connectors, play a role in buffering and shock absorption, avoid damage to the connectors caused by vibration and mechanical shock, and have high safety and reliability.

[0037] In order to protect the three-phase wires and the terminal block from damage, prevent the three-phase wires and the terminal block from wear and aging, extend the service life of the three-phase wires and the terminal block, and enhance safety performance, in this embodiment, a terminal box 8 is arranged on the motor housing 1, and the terminal block is arranged in the terminal box 8. Specifically, the base body 2 of the terminal block is fixed to the motor housing 1 by a third bolt 9.

[0038] In order to enhance the connection strength between the junction box 8 and the motor housing 1 , in this embodiment, the junction box 8 and the motor housing 1 are preferably provided integrally.

[0039] The junction box 8 in this embodiment is provided with three line holes 81, and the three phase lines of the three-phase line extend into the junction box 8 through the corresponding line holes 81. By providing the line holes 81, the direction of the three-phase line is clearer and more organized, which is convenient for daily use and maintenance.

[0040] A preferred embodiment of the oil-cooled motor of the utility model is described in detail above, and there are more embodiments which will not be described in detail here. In summary, the oil-cooled motor of the utility model not only solves the problem of oil leakage at the motor outlet, but also improves the assembly efficiency of the motor.

[0041] The present utility model is not limited to the above-mentioned specific implementation modes. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative labor are all within the protection scope of the present utility model.

Claims

1. An oil-cooled motor, characterized in that, Comprising a motor housing (1) and a terminal block, A motor outlet is provided on the motor housing (1). The terminal block includes a base body (2) provided at the motor outlet and a wiring assembly (3) provided on the base body (2). One end of the wiring assembly (3) is electrically connected to the stator lead wire inside the motor housing (1), and the other end of the wiring assembly (3) is electrically connected to the three-phase wire outside the motor housing (1). A first sealing structure is provided between the base body (2) and the side wall of the motor outlet, and a second sealing structure is provided between the wiring assembly (3) and the base body (2). The first sealing structure and the second sealing structure are used to seal the cooling oil inside the motor housing (1).

2. The oil-cooled motor according to claim 1, characterized in that, An installation portion (21) protrudes on the base body (2), and the installation portion (21) is inserted into the motor outlet. The first sealing structure is provided between the installation portion (21) and the side wall of the motor outlet.

3. The oil-cooled motor according to claim 2, wherein The first sealing structure is a first sealing ring (4). An annular first sealing groove is provided on the installation portion (21), and the first sealing ring (4) is provided in the first sealing groove.

4. The oil-cooled motor according to claim 2, wherein The wiring assembly (3) includes a copper base (31) passing through the base body (2) and the installation portion (21), and a stator lead copper row (32) welded to the copper base (31). The second sealing structure is provided between the copper base (31) and the installation portion (21), and the stator lead copper row (32) is electrically connected to the stator lead wire.

5. The oil-cooled motor according to claim 4, wherein The second sealing structure is a second sealing ring (5). An annular second sealing groove is provided on the copper base (31), and the second sealing ring (5) is provided in the second sealing groove.

6. The oil-cooled motor according to claim 4, wherein The copper base (31) is electrically connected to the three-phase wire through a transfer copper row (22).

7. The oil-cooled motor according to claim 6, wherein Both ends of the transfer copper row (22) are electrically connected to the copper base (31) and the three-phase wire through bolts respectively.

8. The oil-cooled motor according to claim 6, wherein Both the stator lead copper row (32) and the transfer copper row (22) are formed by stacking multiple layers of flexible copper foils.

9. The oil-cooled motor according to claim 1, characterized in that, A junction box (8) is provided on the motor housing (1), and the terminal block is located inside the junction box (8).

10. The oil-cooled motor according to claim 9, characterized in that, A wire guiding hole (81) is provided on the junction box (8), and the three-phase wire extends into the junction box (8) through the wire guiding hole (81).

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