An integrated self-lubricating electric lift

Abstract

The application relates to the technical field of electric lifters, and discloses an integrated self-lubricating electric lifter which comprises a shell, a ball bearing and a rope, a motor is fixedly arranged in the shell, an output shaft is fixedly arranged on the output end of the motor, and an integrated self-lubricating end cover assembly is fixedly arranged at the end of the motor away from the shell. When lubrication is needed, lubricating oil enters the ball bearing for lubrication from a first oil storage tank through an injection groove, an oil injection port and an oil outlet groove, realizes self-lubrication circulation, and is prevented from leaking through a sealing ring. Meanwhile, impurities such as dust from the outside are prevented from entering. The interference fit between a sealing plug and a movable groove can effectively seal the movable groove, prevent the lubricating oil from leaking, avoid the direct contact between the metal surfaces which can cause the rapid wear of the bearing, affect the rotation accuracy of the output shaft, cause the low service life of the bearing and the whole lifter, and thus the long-time use is inconvenient.

Description

Technical Field

[0001] This invention relates to the field of fire rescue equipment, specifically to an integrated self-lubricating electric lift. Background Technology

[0002] In high-altitude work environments such as fire fighting, outdoor work, power, military and police work, and air conditioning, winches or lifting devices are often used for personal safety to achieve rapid lifting and lowering due to the need for high-altitude operations. As the core crawling equipment that enables vertical and horizontal movement of personnel and equipment, the structural stability and reliability of the lifting device are particularly important.

[0003] Chinese utility model patent CN208008377U discloses a lift with a rope guiding mechanism. In this lift, the rolling friction between the rope and the guiding mechanism reduces rope wear and significantly improves the rope's service life. At the same time, it reduces the lift's power consumption, allowing the lift to run for a longer period of time. Furthermore, the addition of a guide roller design expands the application of the DC lift, making it suitable not only for vertical lifting but also for lateral movement.

[0004] Although this type of lifting platform is designed with guide rollers to reduce rope wear and thus improve rope lifespan, the lubrication structure between the motor end and the wheel in the entire design is not designed with lubrication. If there is a lack of lubrication, the balls and the inside of the bearings will be in direct contact for a long time, causing the bearings to wear quickly, affecting the rotational stability of the output shaft, resulting in a shorter service life of the bearings and the entire lifting platform, making it inconvenient for long-term use. Summary of the Invention

[0005] This invention addresses the problems of stability and reliability of existing electric lifting devices by providing an integrated self-lubricating electric lifting device, thereby improving the overall wear resistance and reliability of the electric lifting device.

[0006] To achieve the above objectives, the present invention provides an integrated self-lubricating electric lifting device, comprising a housing, ball bearings, and ropes. A motor is fixedly installed inside the housing, and an output shaft is fixedly installed on the output end of the motor. An integrated self-lubricating end cap assembly is fixedly installed at the end of the motor away from the housing, and a protective component is fixedly installed at the end of the integrated self-lubricating end cap assembly away from the motor. A wheel is fixedly installed on the extension portion of the output shaft away from the motor, and a limit groove is formed at the end of the wheel near the output shaft. A retaining tooth is formed on the outer edge of the wheel.

[0007] The integrated self-lubricating end cap assembly includes an end cap, a first connecting seat, and a second connecting seat. The end cap near the motor has a through-hole connecting groove adapted to the output shaft. The end cap near the first connecting seat has an injection groove. The first connecting seat away from the end cap is threadedly connected to a first oil reservoir. The end cap near the second connecting seat has an oil outlet groove. The second connecting seat away from the end cap is threadedly connected to a second oil reservoir. An oil inlet is through-hole along the outer edge of the ball bearing. The injection groove, oil inlet, and oil outlet groove are interconnected. A retaining groove is formed along the outer edge of the output shaft. A rubber sealing ring is fixedly installed on the output shaft via the retaining groove. Two identical sealing rings are provided, and a ball bearing is fixedly installed between the two sealing rings.

[0008] Preferably, the protective component includes a protective member, an installation groove is provided at the outer edge of the protective member, an extension plate is fixedly installed at the outer edge of the protective member, a locking shaft is rotatably installed on the extension plate, a connecting handle is fixedly installed at the other end of the locking shaft away from the extension plate, and a locking block is fixedly installed at one end of the connecting handle; the locking block is adapted to the locking teeth.

[0009] Preferably, one end of the protective component has a first through groove, and the outer edge of the rotating wheel has a locking tooth. The locking teeth are arranged in a ring, and the locking block is adapted to the locking teeth. A handle is fixedly installed at the other end of the locking block away from the locking block.

[0010] With the above technical solution, when it is necessary to fix the wheel, rotating the handle drives the connecting handle to rotate, so that the locking block is engaged in the gap between the locking teeth, thereby limiting the rotation of the wheel and realizing the braking of the lift. Although it can play a limiting role after the motor stops, it can avoid the failure of the brake of a heavy motor.

[0011] Preferably, a rotating roller is rotatably mounted on the other end of the integrated self-lubricating end cap assembly away from the motor. The other end of the rotating roller away from the integrated self-lubricating end cap assembly is rotatably connected to the protective component. Two identical sets of rotating rollers are provided, with two identical rotating rollers in each set. Another set of rotating rollers is installed in the mounting groove of the protective component, and the rope passes through the two sets of rotating rollers.

[0012] The above technical solution guides and supports the rope through two sets of rotating rollers, reducing friction between the rope and other components and making the rope more stable during lifting. At the same time, the rotating rollers are located at the mounting groove, which can prevent wear between the rope and the opening of the protective components, thus affecting its normal use.

[0013] Preferably, a first threaded sleeve and a mounting base are fixedly installed at the end of the integrated self-lubricating end cap assembly away from the motor, and a second threaded sleeve is fixedly installed at the end of the mounting base away from the motor.

[0014] The above technical solution provides a connection point for the installation of the cover plate through the first threaded sleeve and the second threaded sleeve on the mounting base, which facilitates the installation and disassembly of the cover plate and the integrated self-lubricating end cover assembly, and makes it convenient to inspect and maintain the internal components.

[0015] Preferably, there are four identical first threaded sleeves and second threaded sleeves. The integrated self-lubricating end cap assembly is threadedly connected to a cover plate through the first threaded sleeves and second threaded sleeves. A threaded bolt is threadedly connected to the cover plate, and the threaded bolt passes through the cover plate and extends into the interior of the first threaded sleeves and second threaded sleeves.

[0016] Through the above technical solution, the four first threaded sleeves and second threaded sleeves are connected to the cover plate by threaded bolts, so that the cover plate is firmly installed on the integrated self-lubricating end cover assembly, which protects the internal components. At the same time, this connection method is easy to disassemble.

[0017] Preferably, a second through groove is provided at one end of the cover plate, and the second through groove is adapted to the protective component.

[0018] Through the above technical solution, the design of the second through groove can quickly limit the position of the cover plate during installation, preventing the cover plate from easily shifting during installation, and also making it easier for the protective components to pass through the cover plate, thus providing a double protection function.

[0019] Preferably, a handle is fixedly installed on the housing, a battery is provided inside the housing, and a hook is fixedly installed on the end of the integrated self-lubricating end cap assembly away from the motor.

[0020] Through the above technical solution, the handle facilitates the handling and movement of the housing, the battery provides power to the motor so that the lifting device can work normally, and the hook can be used to suspend objects to realize the lifting function.

[0021] Preferably, the integrated self-lubricating end cap assembly further includes a movable groove, the inner surface of which is provided with a sealing plug, and the sealing plug and the movable groove are interference fit.

[0022] With the above technical solution, when lubrication is required, lubricating oil enters the ball bearing from the first oil tank through the injection groove and oil inlet for lubrication, and then flows into the second oil tank through the oil outlet groove to achieve self-lubricating circulation. The sealing ring prevents lubricating oil leakage and prevents external dust and other impurities from entering. The interference fit between the sealing plug and the movable groove can effectively seal the movable groove to prevent lubricating oil leakage, while preventing external dust and impurities from entering the interior, ensuring the normal operation of the self-lubricating structure.

[0023] Preferably, a connecting cover is fixedly installed at the end of the sealing plug away from the movable groove, and the diameter of the connecting cover is larger than the diameter of the movable groove.

[0024] With the above technical solution, the diameter of the connecting cover is larger than the diameter of the movable groove, which facilitates the operation of the sealing plug and also limits the sealing plug to prevent it from entering the movable groove completely. This makes disassembly and installation convenient, and when adjustment is needed, the oil volume can be changed by changing the length of the sealing plug.

[0025] Compared with the prior art, the integrated self-lubricating electric lifting device solution provided by the present invention has the following beneficial effects:

[0026] 1. In the present invention, when it is necessary to fix the rotating wheel, the handle is rotated to drive the connecting handle to rotate, so that the locking block is engaged in the gap between the locking teeth, thereby restricting the rotation of the rotating wheel and realizing the braking of the lifting device. Although the motor can play a limiting role after it stops, it can avoid the failure of the braking of the heavy motor.

[0027] 2. In the present invention, when lubrication is required, lubricating oil enters the ball bearing from the first oil storage tank through the injection groove and oil inlet for lubrication, and then flows into the second oil storage tank through the oil outlet groove to achieve self-lubricating circulation. The sealing ring prevents lubricating oil leakage and prevents external dust and other impurities from entering. The interference fit between the sealing plug and the movable groove can effectively seal the movable groove to prevent lubricating oil leakage. Direct contact between metal surfaces will prevent the bearing from wearing out quickly, affecting the rotation accuracy of the output shaft, resulting in a shorter service life of the bearing and the entire lifting device, which is not convenient for long-term use.

[0028] 3. In this invention, two sets of rotating rollers guide and support the rope, reducing friction between the rope and other components and making the rope more stable during lifting. At the same time, the rotating rollers are located at the mounting groove, which can prevent wear between the rope and the opening of the protective component, thus affecting its normal use. Attached Figure Description

[0029] Figure 1 A first-view perspective three-dimensional structural example of an electric lifter with a self-lubricating structure provided by the present invention;

[0030] Figure 2 A second-view perspective three-dimensional structural example of an electric lifter with a self-lubricating structure provided by the present invention;

[0031] Figure 3 A third-view perspective stereoscopic structural example of an electric lifter with a self-lubricating structure provided by the present invention;

[0032] Figure 4 This is a schematic diagram of the disassembled structure of the casing and battery components in this invention;

[0033] Figure 5 This is a schematic diagram of the housing and motor mounting structure in this invention;

[0034] Figure 6This is a schematic diagram of the self-lubricating end cap assembly and ball bearing mounting structure integrated in this invention;

[0035] Figure 7 This is a schematic diagram of the installation structure of the ball bearing and oil inlet in this invention;

[0036] Figure 8 This is a schematic diagram of the disassembled structure of the mounting base and cover plate in this invention;

[0037] Figure 9 This is a schematic diagram of the installation structure of the integrated self-lubricating end cap assembly and protective assembly in this invention;

[0038] Figure 10 This is a schematic diagram showing the disassembled structure of the self-lubricating end cap assembly and the protective assembly integrated in this invention.

[0039] Figure 11 This is a schematic diagram of the installation structure of the rotating wheel and rope in this invention;

[0040] Figure 12 This is a three-dimensional structural diagram of the protective component in this invention;

[0041] Figure 13 This is a schematic cross-sectional view of the self-lubricating end cap assembly integrated in this invention.

[0042] Figure 14 This is a schematic diagram of the installation structure of the sealing plug and connecting cover in this invention.

[0043] The components include: 1. Housing; 2. Battery assembly; 3. Handle; 4. Integrated self-lubricating end cap assembly; 401. End cap assembly; 402. Connecting groove; 403. Injection groove; 404. First connecting seat; 405. First oil reservoir; 406. Oil outlet groove; 407. Second connecting seat; 408. Second oil reservoir; 409. Movable groove; 410. Connecting cover; 411. Sealing plug; 5. Motor; 6. Output shaft; 7. Slot; 8. Sealing ring; 9. Ball bearing; 10. Oil filling unit. 11. Rotary wheel; 12. Clamping tooth; 13. Limiting groove; 14. Rope; 16. First threaded sleeve; 17. Protective component; 1701. Protective part; 1702. Mounting groove; 1703. First through groove; 1704. Extension plate; 1705. Clamping shaft; 1706. Connecting handle; 1707. Clamping block; 1708. Handle; 18. Hook seat; 19. Rotary roller; 20. Mounting seat; 21. Second threaded sleeve; 22. Cover plate; 23. Threaded bolt; 24. Second through groove. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1:

[0046] See Figures 1 to 6 The figure shown is an example of the main structure of an electric lifter with a self-lubricating structure, as presented in this example.

[0047] Based on the diagram, the main structure of this electric lifter mainly includes a housing 1, a ball bearing 9, and a rope 14. A motor 5 is fixedly installed inside the housing 1. An output shaft 6 is fixedly installed on the output end of the motor 5. An integrated self-lubricating end cap assembly 4 is fixedly installed on the end of the motor 5 away from the housing 1. A protective component 17 is fixedly installed on the end of the integrated self-lubricating end cap assembly 4 away from the motor 5. A wheel 11 is fixedly installed on the extension of the output shaft 6 away from the motor 5. A limit groove 13 is opened on the end of the wheel 11 near the output shaft 6.

[0048] Based on this, combined Figure 7 , 10 11, 13 and Figure 14 As shown, the integrated self-lubricating end cap assembly 4 in this example includes an end cap 401. The end cap 401 has a through-hole opening at the end near the motor 5, which is adapted to the output shaft 6. It includes a connecting groove 402, an injection groove 403, a first connecting seat 404, a first oil reservoir 405, an oil outlet groove 406, a second connecting seat 407, a second oil reservoir 408, and a movable groove 409.

[0049] The end cap 401 has an injection groove 403 at the end near the first connecting seat 404, the first connecting seat 404 is threaded to the end away from the end cap 401 and has an oil outlet groove 406 at the end near the second connecting seat 407, and the second connecting seat 407 is threaded to the end away from the end cap 401 and has a second oil storage tank 408.

[0050] Furthermore, in this example, a sealing plug 411 is provided on the inner surface of the movable groove 409, and the sealing plug 411 and the movable groove 409 are interference-fitted. With this configuration, when lubrication is required, lubricating oil enters the ball bearing 9 from the first oil reservoir 405 through the injection groove 403 and the oil inlet 10 for lubrication, and then flows into the second oil reservoir 408 through the oil outlet groove 406, realizing self-lubricating circulation. The sealing ring 8 prevents lubricating oil leakage and also prevents external dust and other impurities from entering. The interference fit between the sealing plug 411 and the movable groove 409 can effectively seal the movable groove 409, prevent lubricating oil leakage, and prevent external dust and impurities from entering the interior, ensuring the normal operation of the self-lubricating structure.

[0051] Furthermore, in this example, a connecting cover 410 is fixedly installed at the end of the sealing plug 411 away from the movable groove 409. The diameter of the connecting cover 410 is larger than the diameter of the movable groove 409. This arrangement, with the diameter of the connecting cover 410 being larger than the diameter of the movable groove 409, facilitates the operation of the sealing plug 411 and also limits the sealing plug 411, preventing it from completely entering the movable groove 409. This facilitates disassembly and installation, and when adjustment is required, the oil volume can be changed by altering the length of the sealing plug 411.

[0052] Based on the above scheme, in this example, an oil inlet 10 is further provided through the outer edge of the ball bearing 9. The oil inlet 10 and the oil outlet 406 are interconnected. A groove 7 is provided on the outer edge of the output shaft 6. A rubber sealing ring 8 is fixedly installed on the output shaft 6 through the groove 7. Two identical sealing rings 8 are provided. The ball bearing 9 is fixedly installed between the two sealing rings 8.

[0053] Further integration Figure 8 As shown, in this example, a first threaded sleeve 16 and a mounting base 20 are fixedly installed at the end of the integrated self-lubricating end cap assembly 4 away from the motor 5, and a second threaded sleeve 21 is fixedly installed at the end of the mounting base 20 away from the motor 5. This arrangement provides a connection point for the installation of the cover plate 22 through the first threaded sleeve 16 and the second threaded sleeve 21 on the mounting base 20, facilitating the installation and removal of the cover plate 22 from the integrated self-lubricating end cap assembly 4, and making it convenient for the inspection and maintenance of internal components.

[0054] Example 2:

[0055] Based on the solution in Embodiment 1, this example further provides a configuration scheme for the protective component 17.

[0056] Combination Figure 8-12As shown, the protective component 17 in this example includes a protective member 1701. A mounting groove 1702 is provided at the outer edge of the protective member 1701. An extension plate 1704 is fixedly installed at the outer edge of the protective member 1701. A retaining shaft 1705 is rotatably installed on the extension plate 1704. A connecting handle 1706 is fixedly installed at the other end of the retaining shaft 1705 away from the extension plate 1704. A retaining block 1707 is fixedly installed at one end of the connecting handle 1706.

[0057] As a further feature, this example includes a first through slot 1703 extending through one end of the protective component 1701, and a locking tooth 12 formed at the outer edge of the rotating wheel 11. Multiple locking teeth 12 are arranged in a ring, and a locking block 1707 is fitted to the locking teeth 12. A handle 1708 is fixedly installed at the other end of the locking block 1707, away from the locking tooth 12. With this configuration, when the rotating wheel 11 needs to be fixed, rotating the handle 1708 rotates the connecting handle 1706, causing the locking block 1707 to engage with the gap between the locking teeth 12, thereby restricting the rotation of the rotating wheel 11 and braking the lift. Although this also serves as a limit switch after the motor 5 stops, it prevents the braking of the heavy motor 5 from failing.

[0058] Based on this, in this example, a rotating roller 19 is rotatably mounted on the end of the integrated self-lubricating end cap assembly 4 away from the motor 5. The other end of the rotating roller 19 away from the integrated self-lubricating end cap assembly 4 is rotatably connected to the protective assembly 17. Two identical sets of rotating rollers 19 are provided, with two identical rollers in each set. Another set of rotating rollers 19 is installed in the mounting groove 1702 of the protective component 1701 in the protective assembly 17. The rope 14 passes through the two sets of rotating rollers 19. With this arrangement, the two sets of rotating rollers 19 guide and support the rope 14, reducing friction between the rope 14 and other components, making the rope 14 more stable during lifting and lowering. At the same time, the rotating rollers 19 are located in the mounting groove 1702, which can prevent wear between the rope and the opening of the protective assembly 17, thus avoiding affecting its normal use.

[0059] Example 3:

[0060] This example provides further optimization solutions based on the solutions in Example 1 and Example 2.

[0061] Regarding the electric lifting device solutions formed in Examples 1 and 2, this example provides four identical first threaded sleeves 16 and second threaded sleeves 21. An integrated self-lubricating end cap assembly 4 is threadedly connected to a cover plate 22 via the first threaded sleeves 16 and second threaded sleeves 21. A threaded bolt 23 is threaded onto the cover plate 22, penetrating the cover plate 22 and extending into the interior of the first threaded sleeves 16 and second threaded sleeves 21. This arrangement connects the four first threaded sleeves 16 and second threaded sleeves 21 to the cover plate 22 via the threaded bolt 23, ensuring the cover plate 22 is securely mounted on the integrated self-lubricating end cap assembly 4, protecting the internal components. This connection method also facilitates disassembly.

[0062] As a further feature, this example includes a second through slot 24 extending through one end of the cover plate 22, which is adapted to the protective component 17. This design of the second through slot 24 allows for quick positioning of the cover plate 22 during installation, preventing displacement and facilitating the passage of the protective component 17 through the cover plate 22, thus providing dual protection.

[0063] As a further configuration, in this example, a handle 3 is fixedly installed on the housing 1, a battery 2 is installed inside the housing 1, and a hook 18 is fixedly installed at the end of the integrated self-lubricating end cap assembly 4 away from the motor 5. With this configuration, the handle 3 facilitates the handling and movement of the housing 1, the battery 2 provides power to the motor 5 so that the lifter can work normally, and the hook 18 can be used to suspend objects to realize the lifting function.

[0064] The operation of the electric lifting device with a self-lubricating structure formed in the above example will be explained in detail below with reference to the corresponding attached drawings.

[0065] When this electric lifter with a self-lubricating structure is in use, the motor 5 inside the housing 1 is powered on and operates, transmitting power to the turntable 11 through the output shaft 6. When the turntable 11 rotates, the rope 14 wrapped around its outer edge is driven. The rope 14 passes through two sets of rollers 19. Since the rollers 19 guide and support the rope 14, the rope 14 can move smoothly, thereby lifting and lowering the object suspended by the hook seat 18. The battery 2 provides continuous power to the motor 5 to ensure the normal operation of the lifter.

[0066] Handle 3 facilitates the handling of housing 1. When it is necessary to stop lifting or fix wheel 11, rotate handle 1708. Handle 1708 drives connecting handle 1706 to rotate around locking shaft 1705, so that locking block 1707 is engaged in the gap between locking teeth 12 distributed in a ring on the outer edge of wheel 11, thereby restricting the rotation of wheel 11 and braking the lift. This design can play a limiting role after motor 5 stops, avoiding the failure of motor 5 braking due to the large weight of the object. The first through slot 1703 on protective part 1701 allows rope 14 to pass through without affecting the normal movement of rope 14.

[0067] The end of the integrated self-lubricating end cap assembly 4 away from the motor 5 and the mounting groove 1702 of the protective assembly 17 are respectively equipped with rollers 19. There are two rollers 19 in each set. The rope 14 passes through these two sets of rollers 19. The setting of the rollers 19 plays a guiding and supporting role for the rope 14, reducing the friction between the rope 14 and other components, making the rope 14 rise and fall more smoothly. At the same time, the rollers 19 are located at the mounting groove 1702, which can prevent the rope 14 from wearing with the opening of the protective assembly 17, protect the rope 14, and ensure its normal use.

[0068] The end of the integrated self-lubricating end cap assembly 4 away from the motor 5 is fixed with a first threaded sleeve 16 and a mounting base 20. A second threaded sleeve 21 is fixed on the mounting base 20. There are four first threaded sleeves 16 and four second threaded sleeves 21. The cover plate 22 is connected to these threaded sleeves through threaded bolts 23 and fixed on the integrated self-lubricating end cap assembly 4 to protect the internal components. The second through groove 24 is adapted to the protective component 17. When the cover plate 22 is installed, it can quickly limit the position of the cover plate 22 to prevent displacement during installation. At the same time, it is easy for the protective component 17 to pass through the cover plate 22, which provides double protection. Moreover, this threaded connection method is easy to disassemble and facilitates the inspection and maintenance of the internal components.

[0069] In the self-lubricating structure of the integrated self-lubricating end cap assembly 4, the first oil reservoir 405 is connected to the injection groove 403 of the end cap 401 via the first connecting seat 404, and the second oil reservoir 408 is connected to the oil outlet groove 406 of the end cap 401 via the second connecting seat 407. The oil inlet 10 on the outer edge of the ball bearing 9 is interconnected with the injection groove 403 and the oil outlet groove 406. When lubrication is required, lubricating oil enters the ball bearing 9 from the first oil reservoir 405 through the injection groove 403 and the oil inlet 10 for lubrication, and then flows into the second oil reservoir 408 through the oil outlet groove 406. The self-lubricating circulation system uses two rubber sealing rings 8 in the groove 7 on the outer edge of the output shaft 6 to prevent lubricating oil leakage and to prevent external dust and other impurities from entering. The sealing plug 411 in the movable groove 409 is interference-fitted with the movable groove 409 to further seal and prevent lubricating oil leakage and the entry of external impurities. The connecting cover 410 on the sealing plug 411 has a larger diameter than the movable groove 409, which facilitates the operation of the sealing plug 411 and serves as a limit to prevent it from completely entering the movable groove 409. This facilitates disassembly and installation, and the oil volume can be adjusted by changing the length of the sealing plug 411.

[0070] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated self-lubricating electric lifting device, comprising a housing (1), ball bearings (9), and ropes (14), wherein a motor (5) is fixedly installed inside the housing (1), characterized in that: An output shaft (6) is fixedly installed on the output end of the motor (5). An integrated self-lubricating end cap assembly (4) is fixedly installed on the end of the motor (5) away from the housing (1). A protective assembly (17) is fixedly installed on the end of the integrated self-lubricating end cap assembly (4) away from the motor (5). A rotating wheel (11) is fixedly installed on the extended portion of the output shaft (6) away from the motor (5). A limiting groove (13) is opened on the end of the rotating wheel (11) near the output shaft (6). A retaining tooth (12) is opened on the outer edge of the rotating wheel (11). The integrated self-lubricating end cap assembly (4) includes an end cap (401), a first connecting seat (404), and a second connecting seat (407). A connecting groove (402) adapted to the output shaft (6) is opened through the end of the end cap (401) near the motor (5). The end of the cover (401) near the first connecting seat (404) is provided with an injection groove (403). The end of the first connecting seat (404) away from the end cover (401) is threadedly connected to a first oil storage tank (405). The end of the end cover (401) near the second connecting seat (407) is provided with an oil outlet groove (406). The end of the second connecting seat (407) away from the end cover (401) is threadedly connected to a second oil storage tank (408). An oil inlet (10) is provided through the outer edge of the ball bearing (9). The injection groove (403), the oil inlet (10) and the oil outlet groove (406) are interconnected. A retaining groove (7) is provided on the outer edge of the output shaft (6). A rubber sealing ring (8) is fixedly installed on the output shaft (6) through the retaining groove (7). A ball bearing (9) is fixedly installed between the two sealing rings (8).

2. The integrated self-lubricating electric lifting device according to claim 1, characterized in that: The protective component (17) includes a protective member (1701), an installation groove (1702) is provided at the outer edge of the protective member (1701), an extension plate (1704) is fixedly installed at the outer edge of the protective member (1701), a retaining pin (1705) is rotatably installed on the extension plate (1704), a connecting handle (1706) is fixedly installed at the other end of the retaining pin (1705) away from the extension plate (1704), a retaining block (1707) is fixedly installed at one end of the connecting handle (1706), and the retaining block (1707) is adapted to the retaining tooth (12).

3. The integrated self-lubricating electric lifting device according to claim 2, characterized in that: The protective component (1701) has a first through groove (1703) through one end, and the locking teeth (12) are provided in a ring-shaped arrangement. The other end of the locking block (1707) away from the locking block (1707) is fixedly equipped with a handle (1708).

4. The integrated self-lubricating electric lifting device according to claim 2, characterized in that: The integrated self-lubricating end cap assembly (4) has a rotating roller (19) rotatably mounted on the other end away from the motor (5). The other end of the rotating roller (19) away from the integrated self-lubricating end cap assembly (4) is rotatably connected to the protective assembly (17). There are two identical sets of rotating rollers (19), and each set of rotating rollers (19) has two identical sets. The other set of rotating rollers (19) is installed in the mounting groove (1702) of the protective component (1701). The rope (14) passes through the two sets of rotating rollers (19).

5. The integrated self-lubricating electric lifting device according to claim 1, characterized in that: The integrated self-lubricating end cap assembly (4) is fixedly mounted with a first threaded sleeve (16) and a mounting base (20) at the end away from the motor (5), and a second threaded sleeve (21) is fixedly mounted at the end of the mounting base (20) away from the motor (5).

6. The integrated self-lubricating electric lifting device according to claim 5, characterized in that: The first threaded sleeve (16) and the second threaded sleeve (21) are provided in four identical forms. The integrated self-lubricating end cap assembly (4) is threadedly connected to a cover plate (22) through the first threaded sleeve (16) and the second threaded sleeve (21). A threaded bolt (23) is threadedly connected to the cover plate (22). The threaded bolt (23) penetrates the cover plate (22) and extends into the interior of the first threaded sleeve (16) and the second threaded sleeve (21).

7. The integrated self-lubricating electric lifting device according to claim 6, characterized in that: The cover plate (22) has a second through groove (24) through one end, and the second through groove (24) is adapted to the protective component (17).

8. The integrated self-lubricating electric lifting device according to claim 1, characterized in that: A handle (3) is fixedly installed on the housing (1), a battery component (2) is provided inside the housing (1), and a hook seat (18) is fixedly installed on the end of the integrated self-lubricating end cap assembly (4) away from the motor (5).

9. The integrated self-lubricating electric lifting device according to claim 8, characterized in that: The integrated self-lubricating end cap assembly (4) also includes a movable groove (409), and a sealing plug (411) is provided on the inner surface of the movable groove (409). The sealing plug (411) and the movable groove (409) are interference fit.

10. An integrated self-lubricating electric lifting device according to claim 9, characterized in that: A connecting cover (410) is fixedly installed at the end of the sealing plug (411) away from the movable groove (409), and the diameter of the connecting cover (410) is larger than the diameter of the movable groove (409).

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