Crawler travel motor of electrically driven crane

Abstract

The utility model discloses an electrically-driven crane crawler walking motor which comprises a motor shell, one end of the motor shell is fixedly connected with a supporting sleeve, an output shaft is arranged in the motor shell, the output shaft is rotatably connected with the supporting sleeve, the tail end of the output shaft is provided with a planetary reducer, and the planetary reducer is connected with the supporting sleeve. An inner gear ring is arranged on the outer side of the planetary reducer, and the side, close to the motor shell, of the inner gear ring is fixedly connected with a driving sleeve. The utility model relates to the technical field of crane crawler walking motors, and solves the problems that in the prior art, a planetary reducer of an electric driving walking motor adopts a closed oil pool lubrication mode, effective cooling circulation cannot be formed in the planetary reducer, local overheating and oil oxidation acceleration are easily caused during high-speed or continuous operation, and the service life of the planetary reducer is prolonged. And dry friction and abnormal wear of the gear are possibly caused, so that the maintenance frequency of the travel motor is high, and the service life of the electrically driven travel motor is influenced.

Description

Technical Field

[0001] This utility model relates to the field of crane track motor technology, specifically an electric crane track motor. Background Technology

[0002] Electric-driven crane track travel motors are electric-powered travel devices used for crane tracks. They are characterized by high efficiency, energy saving, and environmental friendliness, effectively reducing crane energy consumption and emissions, improving crane operating efficiency and stability, ensuring stable movement and precise positioning, and maintaining excellent performance under long-term high-load operation, providing strong support for the continuous and stable operation of the crane. In existing technologies, the planetary reducers of electric-driven travel motors use a closed oil sump lubrication method, which cannot form an effective cooling cycle inside the planetary reducer. During high-speed or continuous operation, this can easily lead to local overheating and accelerated oil oxidation, and may also cause dry friction and abnormal wear of gears, resulting in a higher maintenance frequency for the travel motor and affecting its service life. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides an electric-driven crane crawler motor, which solves the problem that in existing technologies, the planetary reducer of the electric-driven crawler motor uses a closed oil sump lubrication method, which cannot form an effective cooling cycle inside the planetary reducer. This can easily lead to local overheating and accelerated oil oxidation during high-speed or continuous operation, and may also cause dry friction and abnormal wear of gears, resulting in a high maintenance frequency of the crawler motor and affecting its service life.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an electric-driven crane track motor includes a motor housing, one end of which is fixedly connected to a support sleeve. An output shaft is disposed inside the motor housing and rotatably connected to the support sleeve. A planetary reducer is disposed at the end of the output shaft, and an internal gear ring is disposed on the outer side of the planetary reducer. A drive sleeve is fixedly connected to the side of the internal gear ring near the motor housing, and the drive sleeve is rotatably connected to both the motor housing and the support sleeve. A planetary carrier is disposed on the side of the planetary reducer near the support sleeve. Oil inlet channels are provided inside both the motor housing and the support sleeve. Oil outlet channels are provided on the side of both the motor housing and the support sleeve away from the oil inlet channels. An oil guide pipe is connected to the end of the oil inlet channel and inserted into the inner wall of the support sleeve. Oil inlet holes are equidistantly disposed on the inner side of the outer wall of the planetary carrier, corresponding to the oil guide pipes. Oil outlet holes are equidistantly disposed on the outer side of the outer wall of the planetary carrier, corresponding to the oil outlet channels.

[0005] Preferably, a cover plate is fixedly connected to the end of the planetary reducer away from the motor housing, and a first sealed bearing is installed on the inner wall of both ends of the support sleeve. The inner wall of the first sealed bearing is connected to the output shaft. A first bearing is installed on the outer side of the motor housing near the planetary reducer, and a second bearing is installed on the outer wall of the support sleeve. The outer walls of the first and second bearings are connected to the drive sleeve. An oil seal is provided at the end of the motor housing and the drive sleeve that are close to each other.

[0006] Preferably, the outer wall of the motor housing is provided with a first connecting flange, and the outer wall of the drive sleeve is provided with a second connecting flange.

[0007] Preferably, an end cover is fixedly connected to the end of the motor housing away from the support sleeve, an electromagnetic brake is provided on the side of the end cover away from the planetary reducer, and a brake disc is installed on the end of the output shaft away from the planetary reducer. The electromagnetic brake is connected in cooperation with the brake disc.

[0008] Preferably, the electromagnetic brake is provided with a dust cover on its outer side, the dust cover is fixedly connected to the end cover, and a second sealed bearing is installed on the inner wall of the end cover, the second sealed bearing being connected to the output shaft.

[0009] This utility model provides an electric-driven crawler motor for cranes. It offers the following advantages: Through the cooperation of the motor housing, support sleeve, planetary reducer, internal gear ring, drive sleeve, planetary carrier, oil inlet channel, oil outlet channel, oil guide pipe, oil inlet hole, and oil outlet hole, and by setting a support sleeve between the motor housing and the planetary reducer, and by establishing a lubricating oil circulation channel within the motor housing and support sleeve, a continuous lubrication and cooling cycle can be formed inside the planetary reducer of the electric drive motor. This effectively avoids the problems of localized overheating and accelerated oil oxidation inside the planetary reducer of the electric drive motor, reduces dry friction and abnormal wear of the gears, thus helping to reduce the maintenance frequency of the electric drive motor and extend its service life.

[0010] The fit between the motor housing, support sleeve, planetary reducer, drive sleeve, cover plate, first sealing bearing, first bearing, second bearing and oil seal can effectively seal the interior of the planetary reducer, prevent lubricating oil leakage, and further improve the sealing performance of the electric drive travel motor. It can effectively prevent external impurities from entering the planetary reducer and ensure stable circulation of lubricating oil, which helps to improve the operating stability and reliability of the electric drive travel motor. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0013] Figure 3 for Figure 1 A magnified view of a portion of region B in the middle;

[0014] Figure 4 for Figure 1 A magnified view of a portion of region C.

[0015] In the diagram: 1. Motor housing; 2. Support sleeve; 3. Output shaft; 4. Planetary reducer; 5. Internal gear ring; 6. Drive sleeve; 7. Planetary carrier; 8. Oil inlet channel; 9. Oil outlet channel; 10. Oil guide pipe; 11. Oil inlet hole; 12. Oil outlet hole; 13. Cover plate; 14. First sealed bearing; 15. First bearing; 16. Second bearing; 17. Oil seal; 18. First connecting flange; 19. Second connecting flange; 20. End cover; 21. Electromagnetic brake; 22. Brake disc; 23. Dust cover; 24. Second sealed bearing. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In existing technology, the fit between the motor housing, support sleeve, planetary reducer, internal gear ring, drive sleeve, planetary carrier, oil inlet channel, oil outlet channel, oil guide pipe, oil inlet hole, and oil outlet hole, and the support sleeve between the motor housing and the planetary reducer, along with the circulation channels for lubricating oil inside the motor housing and the support sleeve, creates a continuous lubrication and cooling cycle within the planetary reducer of the electric drive motor. This effectively avoids localized overheating and accelerated oil oxidation within the planetary reducer of the electric drive motor, reduces dry friction and abnormal wear of the gears, and thus significantly reduces the maintenance frequency of the electric drive motor and extends its service life.

[0018] In view of this, the present invention provides an electric crane crawler motor. Through the cooperation of the motor housing, support sleeve, planetary reducer, internal gear ring, drive sleeve, planetary carrier, oil inlet channel, oil outlet channel, guide pipe, oil inlet hole, and oil outlet hole, and by connecting the oil inlet and outlet channels to a lubricating oil circulation and delivery system, lubricating oil is delivered through the oil inlet channel to the guide pipe during the operation of the crawler motor, and then enters the interior of the planetary reducer through the oil inlet hole, effectively lubricating the gears. Simultaneously, the lubricating oil is discharged through the oil outlet hole and oil outlet channel, creating a continuous lubrication and cooling cycle within the planetary reducer of the electric crane. This effectively avoids localized overheating and accelerated oil oxidation within the planetary reducer of the electric crane, reduces dry friction and abnormal wear of the gears, thereby significantly reducing the maintenance frequency of the electric crane and extending its service life.

[0019] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0020] Depend on Figure 1-4 It is known that an electric-driven crawler travel motor for a crane includes a motor housing 1, with a support sleeve 2 fixedly connected to one end of the motor housing 1. An output shaft 3 is disposed inside the motor housing 1 and rotatably connected to the support sleeve 2. A planetary reducer 4 is disposed at the end of the output shaft 3, and an internal gear ring 5 is disposed on the outer side of the planetary reducer 4. A drive sleeve 6 is fixedly connected to the side of the internal gear ring 5 closest to the motor housing 1. The drive sleeve 6 is rotatably connected to both the motor housing 1 and the support sleeve 2. The planetary reducer 4 is located near the support sleeve 2. A planetary carrier 7 is provided on one side. An oil inlet channel 8 is provided inside the motor housing 1 and the support sleeve 2. An oil outlet channel 9 is provided on the side of the motor housing 1 and the support sleeve 2 away from the oil inlet channel 8. An oil guide pipe 10 is connected to the end of the oil inlet channel 8. The oil guide pipe 10 is inserted into the inner wall of the support sleeve 2. An oil inlet hole 11 is provided at equal intervals on the inner side of the outer wall of the planetary carrier 7. The oil inlet hole 11 is corresponding to the oil guide pipe 10. An oil outlet hole 12 is provided at equal intervals on the outer side of the outer wall of the planetary carrier 7. The oil outlet hole 12 is corresponding to the oil outlet channel 9.

[0021] In the specific implementation process, it is worth noting that, through the cooperation between the motor housing 1 and the output shaft 3, the stator winding is installed inside the motor housing 1, and the rotor is installed on the outer wall of the output shaft 3. When the motor is energized, the stator generates a rotating magnetic field, and the rotor and output shaft 3 begin to rotate under the action of the rotating magnetic field, thereby realizing the rotational drive of the output shaft 3. Through the cooperation between the output shaft 3, the planetary reducer 4, the internal gear ring 5, the drive sleeve 6, and the planetary carrier 7, the output shaft 3 transmits power to the planetary reducer 4. The gear set inside the planetary reducer 4 reduces speed and increases torque, thereby... The drive internal gear ring 5 rotates with the drive sleeve 6, and the drive sleeve 6 is connected to the drive wheel of the crane track to realize the power transmission between the electric drive travel motor and the crane track. The oil inlet 11 is inclined so that the lubricating oil can flow more smoothly into the planetary reducer 4 under the action of centrifugal force. Through the cooperation between the motor housing 1, support sleeve 2, planetary reducer 4, internal gear ring 5, drive sleeve 6, planetary carrier 7, oil inlet channel 8, oil outlet channel 9, oil guide pipe 10, oil inlet 11 and oil outlet 12, the support sleeve 2 drives the electric drive motor. The motor and planetary reducer 4 are isolated. The oil inlet channel 8 and oil outlet channel 9 are connected to the lubricating oil circulation and delivery system. During the operation of the travel motor, lubricating oil is delivered through the oil inlet channel 8 to the oil guide pipe 10, and then enters the interior of the planetary reducer 4 through the oil inlet hole 11, effectively lubricating the gears. Simultaneously, the lubricating oil is discharged through the oil drain hole 12 and oil outlet channel 9, achieving cooling circulation and lubrication of the planetary reducer 4. The system consists of the motor housing 1, support sleeve 2, planetary reducer 4, internal gear ring 5, drive sleeve 6, planetary carrier 7, oil inlet channel 8, and oil outlet channel 9. The fit between the oil passage 9, the oil guide pipe 10, the oil inlet hole 11 and the oil outlet hole 12, and the support sleeve 2 between the motor housing 1 and the planetary reducer 4, and the circulation channel of lubricating oil inside the motor housing 1 and the support sleeve 2, make the planetary reducer 4 of the electric drive motor form a continuous lubrication and cooling cycle. This effectively avoids the problems of local overheating and accelerated oil oxidation inside the planetary reducer 4 of the electric drive motor, reduces dry friction and abnormal wear of gears, thereby significantly reducing the maintenance frequency of the electric drive motor and extending the service life of the electric drive motor.

[0022] Furthermore, a cover plate 13 is fixedly connected to the end of the planetary reducer 4 away from the motor housing 1, and a first sealed bearing 14 is installed on the inner wall of both ends of the support sleeve 2. The inner wall of the first sealed bearing 14 is connected to the output shaft 3. A first bearing 15 is installed on the outer side of the motor housing 1 near the planetary reducer 4, and a second bearing 16 is installed on the outer wall of the support sleeve 2. The outer walls of the first bearing 15 and the second bearing 16 are connected to the drive sleeve 6. An oil seal 17 is provided at the ends of the motor housing 1 and the drive sleeve 6 that are close to each other.

[0023] In the specific implementation process, it is worth noting that the cooperation between the support sleeve 2, the planetary reducer 4, the cover plate 13, and the first sealing bearing 14 effectively seals the interior of the planetary reducer 4, preventing lubricating oil leakage. Through the cooperation between the motor housing 1, the support sleeve 2, the drive sleeve 6, the first bearing 15, the second bearing 16, and the oil seal 17, the drive sleeve 6 is supported and positioned externally by the first bearing 15 and the second bearing 16. The oil seal 17 further seals the space between the motor housing 1 and the drive sleeve 6, effectively improving the sealing performance of the electric drive motor. To prevent external impurities from entering the planetary reducer 4 and ensure stable circulation of lubricating oil, the operation stability and reliability of the electric drive travel motor are improved. Through the cooperation between the motor housing 1, support sleeve 2, planetary reducer 4, drive sleeve 6, cover plate 13, first sealing bearing 14, first bearing 15, second bearing 16 and oil seal 17, the interior of the planetary reducer 4 is effectively sealed to prevent lubricating oil leakage, further improve the sealing performance of the electric drive travel motor, effectively prevent external impurities from entering the planetary reducer 4, and ensure stable circulation of lubricating oil, thereby improving the operation stability and reliability of the electric drive travel motor.

[0024] Furthermore, the outer wall of the motor housing 1 is provided with a first connecting flange 18, and the outer wall of the drive sleeve 6 is provided with a second connecting flange 19.

[0025] In the specific implementation process, it is worth noting that through the cooperation between the motor housing 1, the drive sleeve 6, the first connecting flange 18 and the second connecting flange 19, the motor housing 1 and the drive sleeve 6 can be easily connected or fixed to the crane frame and the crawler drive wheel, increasing the installation flexibility and ease of use of the electric drive crane crawler motor.

[0026] Furthermore, an end cover 20 is fixedly connected to the end of the motor housing 1 away from the support sleeve 2. An electromagnetic brake 21 is provided on the side of the end cover 20 away from the planetary reducer 4. A brake disc 22 is installed on the end of the output shaft 3 away from the planetary reducer 4. The electromagnetic brake 21 and the brake disc 22 are connected in cooperation.

[0027] In the specific implementation process, it is worth noting that, through the cooperation between the motor housing 1, end cover 20, electromagnetic brake 21 and brake disc 22, when it is necessary to brake the crawler travel motor of the electric drive crane, the electromagnetic brake 21 is energized to generate magnetic force, which attracts the brake disc 22 to fit tightly with the electromagnetic brake 21, thereby realizing the rapid braking of the travel motor, improving braking efficiency and response speed, effectively reducing the wear and noise that may be caused by traditional mechanical braking methods, ensuring the safety and stability of the crane during operation, and improving the overall user experience. The specific model of the electromagnetic brake 21 is not limited, as long as it meets the usage requirements.

[0028] Furthermore, a dust cover 23 is provided on the outer side of the electromagnetic brake 21. The dust cover 23 is fixedly connected to the end cover 20. A second sealed bearing 24 is installed on the inner wall of the end cover 20. The second sealed bearing 24 is connected to the output shaft 3.

[0029] In the specific implementation process, it is worth noting that the drive motor is sealed by the cooperation between the end cover 20, the dust cover 23, and the second sealed bearing 24, which effectively prevents dust and impurities from entering the drive motor and the electromagnetic brake 21, thus avoiding affecting the performance and service life of the drive motor and the electromagnetic brake 21.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric-driven crane crawler motor, comprising a motor housing (1), characterized in that: One end of the motor housing (1) is fixedly connected to a support sleeve (2). An output shaft (3) is provided inside the motor housing (1). The output shaft (3) is rotatably connected to the support sleeve (2). A planetary reducer (4) is provided at the end of the output shaft (3). An internal gear ring (5) is provided on the outside of the planetary reducer (4). A drive sleeve (6) is fixedly connected to the side of the internal gear ring (5) near the motor housing (1). The drive sleeve (6) is rotatably connected to both the motor housing (1) and the support sleeve (2). A planetary carrier (7) is provided on the side of the planetary reducer (4) near the support sleeve (2). Both the motor housing (1) and the support sleeve (2) have an oil inlet channel (8) inside. The motor housing (1) and the support sleeve (2) have an oil outlet channel (9) on the side away from the oil inlet channel (8) inside. The end of the oil inlet channel (8) is connected to an oil guide pipe (10). The oil guide pipe (10) is inserted into the inner wall of the support sleeve (2). The outer wall of the planetary carrier (7) has an oil inlet hole (11) at equal intervals. The oil inlet hole (11) is corresponding to the oil guide pipe (10). The outer wall of the planetary carrier (7) has an oil outlet hole (12) at equal intervals. The oil outlet hole (12) is corresponding to the oil outlet channel (9).

2. The electric drive crane track motor according to claim 1, characterized in that: The planetary reducer (4) is fixedly connected to a cover plate (13) at the end away from the motor housing (1). The inner walls of both ends of the support sleeve (2) are equipped with first sealed bearings (14). The inner walls of the first sealed bearings (14) are connected to the output shaft (3). The outer side of the motor housing (1) near the planetary reducer (4) is equipped with a first bearing (15). The outer wall of the support sleeve (2) is equipped with a second bearing (16). The outer walls of the first bearing (15) and the second bearing (16) are connected to the drive sleeve (6). An oil seal (17) is provided at the ends of the motor housing (1) and the drive sleeve (6) that are close to each other.

3. The electric drive crane track motor according to claim 1, characterized in that: The outer wall of the motor housing (1) is provided with a first connecting flange (18), and the outer wall of the drive sleeve (6) is provided with a second connecting flange (19).

4. The electric drive crane track motor according to claim 1, characterized in that: An end cap (20) is fixedly connected to the end of the motor housing (1) away from the support sleeve (2). An electromagnetic brake (21) is provided on the side of the end cap (20) away from the planetary reducer (4). A brake disc (22) is installed on the end of the output shaft (3) away from the planetary reducer (4). The electromagnetic brake (21) is connected to the brake disc (22).

5. The electric drive crane track motor according to claim 4, characterized in that: The electromagnetic brake (21) is provided with a dust cover (23) on the outside. The dust cover (23) is fixedly connected to the end cover (20). The inner wall of the end cover (20) is equipped with a second sealed bearing (24). The second sealed bearing (24) is connected to the output shaft (3).

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