Electric locomotive air compressor driving motor

Abstract

The utility model discloses a driving motor of an air compressor of an electric locomotive, which adopts an improved heat dissipation and dustproof design. The front end of the rotating shaft extends out through the front end cover to form a connecting end, and the rear end of the rotating shaft extends out through the rear end cover to form an assembling end. The motor further comprises a fan cover, fan blades, an impeller and brush strips, and the fan cover is fixedly connected to the tail of the rear end cover and is axially opposite to the cooling fins. The fan blades are fixedly installed at the assembling end of the rotating shaft and arranged in the fan cover, and the impeller is rotationally installed at the tail of the fan cover through the connecting shaft and fixedly connected with the connecting shaft. A dustproof net is arranged at the tail of the fan cover, surrounds the connecting shaft and is attached to the brush strips on the outer side of the fan cover. The brush strips are evenly and fixedly connected to the connecting shaft and can clean dust on the outer side of the dustproof net. According to the design, the heat dissipation efficiency is improved through the synergistic effect of the fan blades and the impeller, meanwhile, the dustproof net and the brush strips effectively prevent dust from entering the motor, heat dissipation fins are kept clean, and the stability and heat dissipation performance of the motor in long-term operation are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive motor technical field, specifically is a kind of electric locomotive air compressor drive motor. BACKGROUND

[0002] Existing electric locomotive air compressor drive motor generally faces the problem of low heat dissipation efficiency.Although to improve the heat dissipation effect, usually install the fan blade connected with the rotating shaft at the tail of motor, with the rotation of fan blade drives the surrounding air to accelerate flow, so as to realize the effective heat dissipation of motor inside and fin. But in the long-term use process, motor generates a large amount of heat when running, and the airflow driven by fan blade can make dust in external air into motor inside. Dust accumulation not only forms accumulation layer on the surface of fin, hinders heat dissipation efficiency, but also can accumulate at the dustproof net of installation, affects the permeability of dustproof net, so as to reduce the air intake, further aggravate the heat dissipation problem.

[0003] Therefore, how to effectively improve the heat dissipation efficiency of motor, reduce the influence of dust on heat dissipation system, is still a problem to be solved in current technology. UTILITY MODEL CONTENT

[0004] In view of the above shortcomings existing in prior art, the utility model aims at providing a kind of electric locomotive air compressor drive motor, improve the stability, reliability and service life of motor, with significant beneficial effect.

[0005] The utility model employs the technical scheme that a kind of electric locomotive air compressor drive motor, including base, front end cover, rear end cover, stator assembly, rotor assembly, rotating shaft, the front and rear ends of the base are fixedly connected with the front end cover, rear end cover, the stator assembly is fixedly installed in the base, the rotating shaft is rotatably installed at the shaft center of front end cover, rear end cover, the rotor assembly is fixedly installed on the rotating shaft and is arranged in the inside of stator assembly.

[0006] The outer wall of the base is fixedly connected with fin, the front end of the rotating shaft is stretched out by the front end cover and forms connecting end, the rear end of the rotating shaft is stretched out by the rear end cover and forms assembly end.

[0007] It further includes wind cover, fan blade, impeller, brush bar, the wind cover is fixedly connected to the tail of rear end cover and keeps axial opposite with the fin, the fan blade is fixedly installed to the assembly end of rotating shaft and is arranged in the wind cover, the wind cover tail shaft center rotatably installs connection shaft, impeller is fixedly connected to the connection shaft and is arranged in the wind cover, the tail of wind cover is equipped with the dustproof net arranged in the periphery of connection shaft, the brush bar includes multiple groups fixedly connected to connection shaft and arranged outside wind cover, the brush bar keeps close to dustproof net.

[0008] On the basis of the above technical scheme, in order to ensure that the stator assembly can be stably installed inside the machine base and ensure that the stator assembly meets the wiring requirements, the following technical scheme is provided.

[0009] Further comprising a terminal box assembly, the terminal box is arranged on the top of the machine base, a sealing gasket is arranged between the terminal box assembly and the machine base, the stator assembly is fixed to the machine base by a tight spindle screw, and the power supply line led out from the stator assembly is connected with the terminal box assembly through the sealing gasket.

[0010] On the basis of the above technical scheme, in order to ensure that the shaft can be stably installed at the front end cover and the rear end cover in a relative rotating manner, the following technical scheme is provided.

[0011] The front end bearing and the rear end bearing are respectively arranged in the bearing chamber of the front end cover and the rear end cover, the outer ring of the front end bearing and the rear end bearing is in transition fit with the corresponding bearing chamber, and the inner ring of the front end bearing and the rear end bearing is in interference fit with the shaft.

[0012] On the basis of the above technical scheme, in order to ensure that the bearing can be stably installed in the corresponding bearing chamber and realize the axial positioning of the bearing and the shaft, the following technical scheme is provided.

[0013] The inner side and the outer side of the front end cover bearing chamber are respectively provided with a front bearing inner cover and a front bearing outer cover, the front end bearing is arranged between the front bearing inner cover and the front bearing outer cover, the inner side and the outer side of the rear end cover bearing chamber are respectively provided with a rear bearing inner cover and a rear bearing outer cover, and the rear end bearing is arranged between the rear bearing inner cover and the rear bearing outer cover.

[0014] On the basis of the above technical scheme, in order to realize further accurate positioning of the front end bearing and the rear end bearing and facilitate assembly of the driving motor, the following technical scheme is provided.

[0015] The front bearing inner cover and the front bearing outer cover abut against the outer ring of the front end bearing, and the rear bearing inner cover and the rear bearing outer cover are additionally provided with a steel wave spring between the outer ring of the rear end bearing.

[0016] On the basis of the above technical scheme, in order to ensure the sealing property of the connection between the shaft and the front end cover and the rear end cover and avoid dust and water vapor from entering the driving motor to affect normal operation thereof, the following technical scheme is provided.

[0017] The connection between the front bearing outer cover and the shaft and the connection between the rear bearing outer cover and the shaft are additionally provided with a skeleton oil seal.

[0018] The utility model discloses the beneficial effect:

[0019] The motor base is provided with radiating fins, in combination with the synergistic effect of the fan blade and the impeller, air flow can be accelerated, and the heat dissipation efficiency is improved. The fan blade is driven to rotate by the rotating shaft, and the external air is sucked in and blown out through the radiating fins on the front side of the fan cover, effectively taking away the heat generated in the motor, ensuring the heat dissipation demand of the motor in high load operation, and avoiding overheating phenomenon.

[0020] In view of the dust problem, the tail part of the motor cover is provided with a dust screen, which can effectively block dust in the air from entering the motor, and at the same time, the airflow driven by the fan blade can also blow away the dust attached to the radiating fins, avoiding dust accumulation and maintaining the permeability and heat dissipation effect of the radiating fins. In order to further improve the dustproof effect, a brush strip is installed outside the dust screen in the present patent, the brush strip rotates with the impeller, and the impeller is driven to rotate by the airflow, which can clean the dust outside the dust screen, ensure the smoothness of the dust screen and the air inlet amount, and further optimize the working environment of the heat dissipation system. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is Figure 1 It is an enlarged detail schematic diagram of part A;

[0023] Figure 3 It is Figure 1 It is an enlarged detail schematic diagram of part B;

[0024] Figure 4 It is Figure 1 It is an enlarged detail schematic diagram of part C;

[0025] Figure 5 It is a front view of the utility model.

[0026] In the drawing: 11 base, 111 radiating fin, 12 front end cover, 121 front bearing inner cover, 122 front bearing outer cover, 13 rear end cover, 131 rear bearing inner cover, 132 rear bearing outer cover, 14 stator assembly, 141 power line, 15 rotor assembly, 16 rotating shaft, 161 connecting end, 162 assembly end, 163 front end bearing, 164 rear end bearing, 17 junction box assembly, 171 sealing gasket, 181 steel wave spring, 182 skeleton oil seal, 21 fan cover, 211 connecting shaft, 212 dust screen, 22 fan blade, 23 impeller, 24 brush strip. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0028] Please refer to Figures 1-5 A driving motor of a power locomotive air compressor, comprising a base 11, a front end cover 12, a rear end cover 13, a stator assembly 14, a rotor assembly 15, a rotating shaft 16, the front end cover 12 and the rear end cover 13 are fixedly connected to the front end and the rear end of the base 11 respectively, the stator assembly 14 is fixedly installed in the base 11, the rotating shaft 16 is rotatably installed at the shaft center of the front end cover 12 and the rear end cover 13, and the rotor assembly 15 is fixedly installed on the rotating shaft 16 and arranged inside the stator assembly 14.

[0029] The outer wall of the base 11 is fixedly connected with a cooling fin 111, the front end of the rotating shaft 16 is extended out of the front end cover 12 and forms a connecting end 161, and the rear end of the rotating shaft 16 is extended out of the rear end cover 13 and forms an assembling end 162.

[0030] Further comprising a fan cover 21, a fan blade 22, an impeller 23 and a brush strip 24, the fan cover 21 is fixedly connected to the tail of the rear end cover 13 and axially opposite to the cooling fin 111, the fan blade 22 is fixedly installed to the assembling end 162 of the rotating shaft 16 and arranged in the fan cover 21, a connecting shaft 211 is rotatably installed at the shaft center of the tail of the fan cover 21, the impeller 23 is fixedly connected to the connecting shaft 211 and arranged in the fan cover 21, the tail of the fan cover 21 is provided with a dust screen 212 arranged outside the connecting shaft 211, and the brush strip 24 comprises a plurality of groups fixedly connected to the connecting shaft 211 and arranged outside the fan cover 21, and the brush strip 24 is attached to the dust screen 212.

[0031] The base 11, the front end cover 12 and the rear end cover 13 are all cast iron structures, and the insulation materials added in the driving motor are all H-grade low-smoke non-toxic materials.

[0032] The base 11, the front end cover 12 and the rear end cover 13 form the shell structure of the driving motor, so that the stator assembly 14, the rotor assembly 15 and the rotating shaft 16 can be stably installed and operated in the shell structure, the cooling fin 111 is arranged on the base 11, and the protection and heat dissipation effects are considered.

[0033] The driving motor provided by the utility model provides driving force as the driving equipment of the power locomotive air compressor, in use, the connecting end 161 of the rotating shaft 16 in the driving motor is connected with the impeller 23 of the air compressor, after the circuit is connected, the driving motor drives the impeller 23 to generate gas, the gas is injected into the cylinder, and the power locomotive is braked to ensure the safe and reliable operation of the power locomotive.

[0034] In the driving motor operation stage, the generated heat can be transferred outward through the base 11 and the arranged heat dissipation fins 111, and the shaft 16 can also drive the tail fan blade 22 to rotate, so that the external air is sucked from the dust screen 212 side of the tail of the fan cover 21, and then blown to the heat dissipation fins 111 on the front side through the gap between the front end cover 12 and the rear end cover 13, so that the heat of the heat dissipation fins 111 can be quickly taken out to ensure the overall heat dissipation efficiency of the driving motor.

[0035] When the fan blade 22 rotates, the dust carried in the external air can be intercepted by the dust screen 212 to ensure the cleanliness of the inside of the fan cover 21, and the airflow blown to the heat dissipation fins 111 can also take away the dust attached to the heat dissipation fins 111, avoiding the dust from accumulating on the heat dissipation fins 111 to affect the heat dissipation effect. The generated airflow can also blow the impeller 23 inside the fan cover 21 to rotate, and then drive the connecting shaft 211 and the brush strip 24 to rotate synchronously. The rotating brush strip 24 can sweep the dust intercepted outside the dust screen 212 to ensure the permeability and air intake of the interception screen. Based on the above design, the heat dissipation effect of the driving motor can be effectively improved.

[0036] On the basis of the above technical scheme, in order to ensure that the stator assembly 14 can be stably installed inside the base 11 and ensure that the stator assembly 14 meets the wiring requirements, the following technical scheme is provided.

[0037] Further comprising a wiring box assembly 17, the wiring box is arranged on the top of the base 11, and a sealing gasket 171 is arranged between the wiring box assembly 17 and the base 11 in a sealing and fitting manner. The stator assembly 14 is fixed to the base 11 by a tightening screw, and the power line 141 led out from the stator assembly 14 passes through the sealing gasket 171 and is connected to the wiring box assembly 17.

[0038] The sealing gasket 171 is installed between the base 11 and the wiring box assembly 17, so that the connection position of the two is kept in a fully sealed state, so that it has better dustproof and waterproof effect. After the wiring box assembly 17 is connected to the power supply, the stator assembly 14 can be powered through the power line 141 to drive the rotor assembly 15 and the shaft 16 to stably rotate.

[0039] On the basis of the above technical scheme, in order to ensure that the shaft 16 can be stably installed in a relative rotating manner at the front end cover 12 and the rear end cover 13, the following technical scheme is provided.

[0040] The front end bearing 163 and the rear end bearing 164 are arranged in the bearing chambers of the front end cover 12 and the rear end cover 13 respectively, the outer rings of the front end bearing 163 and the rear end bearing 164 are in transition fit with the corresponding bearing chambers, and the inner rings of the front end bearing 163 and the rear end bearing 164 are in interference fit with the rotating shaft 16.

[0041] The front end bearing 163 and the rear end bearing 164 are arranged in the bearing chambers of the front end cover 12 and the rear end cover 13 respectively, the outer rings of the front end bearing 163 and the rear end bearing 164 are in transition fit with the corresponding bearing chambers, and the inner rings of the front end bearing 163 and the rear end bearing 164 are in interference fit with the rotating shaft 16.

[0042] On the basis of the above technical scheme, in order to ensure that the bearing can be stably installed in the corresponding bearing chamber and realize axial positioning of the bearing and the rotating shaft 16, the following technical scheme is provided.

[0043] The front end bearing 163 is arranged between the front bearing inner cover 121 and the front bearing outer cover 122, and the rear end bearing 164 is arranged between the rear bearing inner cover 131 and the rear bearing outer cover 132.

[0044] The front end bearing 163 in the bearing chamber of the front end cover 12 is positioned by the matched front bearing inner cover 121 and the front bearing outer cover 122, and the rear end bearing 164 in the bearing chamber of the rear end cover 13 is positioned by the matched rear bearing inner cover 131 and the rear bearing outer cover 132, which can jointly and cooperatively realize axial precise positioning of the rotating shaft 16 and the front end bearing 163 and the rear end bearing 164 thereon, so that axial jumping is avoided.

[0045] On the basis of the above technical scheme, in order to realize further precise positioning of the front end bearing 163 and the rear end bearing 164 and facilitate assembly of the driving motor, the following technical scheme is provided.

[0046] The front bearing inner cover 121 and the front bearing outer cover 122 abut against the outer ring of the front end bearing 163, and the rear bearing inner cover 131 and the rear bearing outer cover 132 are provided with a steel wave spring 181 between the outer ring of the rear end bearing 164.

[0047] The front bearing inner cover 121, the front bearing outer cover 122 and the outer ring of the front end bearing 163 are directly abutted and arranged, and the front end bearing 163 can be precisely axially positioned by the front bearing inner cover 121 and the front bearing outer cover 122. The steel wave spring 181 is installed between the rear bearing inner cover 131, the rear bearing outer cover 132 and the outer ring of the rear end bearing 164, and the steel wave spring 181 can provide an axial pre-tightening force to prevent the rear end bearing 164 from running and to improve the service life of the bearing.

[0048] On the basis of the above technical scheme, in order to ensure the sealing performance of the connection between the rotating shaft 16 and the front end cover 12 and the rear end cover 13, and to avoid the intrusion of dust and water vapor into the driving motor and affect the normal operation thereof, the following technical scheme is provided.

[0049] The front bearing outer cover 122 and the rotating shaft 16 are connected, and the rear bearing outer cover 132 and the rotating shaft 16 are connected, and a skeleton oil seal 182 is installed.

[0050] The skeleton oil seal 182 can effectively seal the connection position of the rotating shaft 16 and the front bearing outer cover 122 and the rear bearing outer cover 132, so as to avoid the intrusion of external water vapor and dust into the driving motor.

[0051] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0052] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. An electric locomotive air compressor drive motor, comprising a base (11), a front end cover (12), a rear end cover (13), a stator assembly (14), a rotor assembly (15), a rotating shaft (16), the front and rear ends of the base (11) are fixedly connected with the front end cover (12) and the rear end cover (13) respectively, the stator assembly (14) is fixedly installed in the base (11), the rotating shaft (16) is rotatably installed at the shaft center of the front end cover (12) and the rear end cover (13), and the rotor assembly (15) is fixedly installed on the rotating shaft (16) and arranged inside the stator assembly (14). characterized in that The outer wall of the base (11) is fixedly connected with a cooling fin (111), the front end of the rotating shaft (16) is extended out of the front end cover (12) and forms a connecting end (161), and the rear end of the rotating shaft (16) is extended out of the rear end cover (13) and forms an assembly end (162). Further comprising a fan cover (21), a fan blade (22), an impeller (23), and a brush strip (24), the fan cover (21) is fixedly connected to the tail of the rear end cover (13) and axially opposite to the cooling fin (111), the fan blade (22) is fixedly installed to the assembly end (162) of the rotating shaft (16) and arranged inside the fan cover (21), a connecting shaft (211) is rotatably installed at the shaft center of the tail of the fan cover (21), the impeller (23) is fixedly connected to the connecting shaft (211) and arranged inside the fan cover (21), the tail of the fan cover (21) is provided with a dust screen (212) arranged outside the connecting shaft (211), and the brush strip (24) comprises a plurality of groups fixedly connected to the connecting shaft (211) and arranged outside the fan cover (21), and the brush strip (24) is in close contact with the dust screen (212).

2. The drive motor of claim 1, wherein: Further comprising a junction box assembly (17), the junction box is arranged on the top of the base (11), a sealing gasket (171) in sealing contact is arranged between the junction box assembly (17) and the base (11), the stator assembly (14) is fixedly connected to the base (11) by a tight winding screw, and a power supply line (141) led out of the stator assembly (14) is connected with the junction box assembly (17) through the sealing gasket (171).

3. The electric drive motor for the air compressor of a locomotive according to claim 1, characterized in that: The front and rear ends of the rotating shaft (16) are respectively provided with a front end bearing (163) and a rear end bearing (164), the front end bearing (163) and the rear end bearing (164) are arranged in the bearing chambers of the front end cover (12) and the rear end cover (13) respectively, the outer rings of the front end bearing (163) and the rear end bearing (164) are in transition fit with the corresponding bearing chambers, and the inner rings of the front end bearing (163) and the rear end bearing (164) are in interference fit with the rotating shaft (16).

4. The electric drive motor for the air compressor of a locomotive according to claim 3, characterized in that: The inner and outer sides of the bearing chamber of the front end cover (12) are respectively equipped with a front bearing inner cover (121) and a front bearing outer cover (122), the front end bearing (163) is arranged between the front bearing inner cover (121) and the front bearing outer cover (122), the inner and outer sides of the bearing chamber of the rear end cover (13) are respectively equipped with a rear bearing inner cover (131) and a rear bearing outer cover (132), and the rear end bearing (164) is arranged between the rear bearing inner cover (131) and the rear bearing outer cover (132).

5. The electric drive motor for a locomotive air compressor as set forth in claim 4, wherein: The front bearing inner cover (121) and the front bearing outer cover (122) abut against the outer ring of the front end bearing (163), and the rear bearing inner cover (131) and the rear bearing outer cover (132) are additionally provided with a steel wave spring (181) between the outer ring of the rear end bearing (164).

6. The electric drive motor for a locomotive air compressor as set forth in claim 5, wherein: The front bearing outer cover (122) and the rear bearing outer cover (132) are additionally provided with a skeleton oil seal (182) at the connection with the rotating shaft (16).

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