Embedded outdoor safety power cabinet

Abstract

The invention provides an embedded outdoor safety power cabinet, and relates to the technical field of power cabinets. The embedded outdoor safety power cabinet comprises a preset shell and a shielding frame, an operation table is arranged at the upper end of the preset shell, the shielding frame penetrates through the operation table, an interval grid plate is arranged on the inner side of the preset shell, a cooling interval is formed between the interval grid plate and the preset shell, a drainage mechanism is arranged on the inner side of the cooling interval, and a heat dissipation shell is arranged on the inner side of the preset shell. The heat dissipation shell is arranged on the inner side of the spacing grid plate. According to the embedded outdoor safety power cabinet, the interval grid plate is arranged, the cooling interval and the heat dissipation interval are formed on the two sides of the interval grid plate, cooling liquid on the inner side of the cooling interval can uniformly and continuously cool the interval grid plate, airflow circulates on the inner side of the heat dissipation interval plate, hot airflow can make contact with the interval grid plate, and the heat dissipation effect is improved. The air flow can be cooled, the effect of cooling the power cabinet is achieved, and the problem that an embedded power cabinet is poor in heat dissipation effect and cannot be effectively and continuously cooled is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power cabinets, and specifically to a buried outdoor safety power cabinet. Background Art

[0002] An outdoor safety power cabinet, as the name implies, is a power cabinet installed outdoors. Currently, all outdoor safety power cabinets are installed on the upper end of the ground surface. During the long-term use of such power cabinets, the outer surface of the power cabinet is easily eroded by rainwater, affecting the service life of the power cabinet. In addition, for a power cabinet installed on the ground surface, due to its relatively large volume, it will occupy a large amount of ground surface space, affecting the installation of other public facilities. Moreover, a power cabinet installed on the ground surface is easily impacted by accidental impact forces. For example, in the event of a vehicle accident, the vehicle hits the power cabinet, causing damage to the internal components of the power cabinet and resulting in huge economic losses.

[0003] Through retrieval, Chinese Patent Publication No. CN115939959B discloses a buried outdoor safety power cabinet, which includes a power cabinet and a protection box in which the power cabinet is installed. The upper end of the protection box is provided with a box opening, and guiding sliding grooves are symmetrically opened on both sides inside the protection box. Fixed support plates are symmetrically welded on both sides of the upper port of the protection box. Connecting through grooves are opened on the fixed support plates, and a fixed end block is welded to one end of the fixed support plate away from the protection box on one side, and a driving motor is fixedly installed on the fixed support plate away from the protection box on the other side. A threaded motor shaft is installed on the driving motor, and the power cabinet is movably installed inside the protection box. By burying the power cabinet in the ground through the protection box, not only the utilization rate of the ground surface space is improved, but also the power cabinet can be better protected by burying it in the ground through the protection box, avoiding the occurrence of damage to the power cabinet caused by accidental impact forces.

[0004] When installing and maintaining electrical equipment in existing buried power cabinets, it is necessary to enter the equipment space underground for installation, which will result in problems such as inconvenient installation and maintenance and a small space. In addition, existing buried power cabinets have poor heat dissipation effects and cannot effectively continuously cool down. Moreover, since the buried power cabinets are installed underground and cannot be closed in time, external sundries and dust will enter the power cabinets. Therefore, a buried outdoor safety power cabinet is proposed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a buried outdoor safety power cabinet, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: An embedded outdoor safety power cabinet, comprising a preset outer shell and a shielding frame. An operating platform is provided at the upper end of the preset outer shell. The shielding frame penetrates through the operating platform. An interval grid plate is provided inside the preset outer shell. A cooling interval is formed between the interval grid plate and the preset outer shell. A drainage mechanism is provided inside the cooling interval. A heat dissipation shell is provided inside the preset outer shell. The heat dissipation shell is arranged inside the interval grid plate. A heat dissipation interval is formed between the inner wall of the interval grid plate and the heat dissipation shell. A flow guide plate is provided inside the heat dissipation interval. A sealing shell is provided at the lower end of the preset outer shell. A synchronization unit is provided inside the sealing shell. An elevating screw rod is provided above the synchronization unit. The elevating screw rod penetrates through the bottom of the preset outer shell. A placement table is provided at the inner bottom of the preset outer shell. A lifting frame is engaged with the outer surface of the elevating screw rod. An installation plate is provided on the upper surface of the lifting frame. The installation plate is placed above the placement table. An installation cabinet is provided above the installation plate. A sealing mechanism is provided above the installation plate. The upper end of the sealing mechanism is connected to a sealing end cover. The sealing end cover is rotatably connected to the operating platform.

[0007] Preferably, the overall shape of the interval grid plate is square. Grooves formed by repeated folding are provided on the surface of the interval grid plate to increase the contact area between the cooling interval and the heat dissipation interval.

[0008] Preferably, the drainage mechanism includes a drainage motor and a drainage fan blade column. The cooling interval is filled with a coolant. The drainage fan blade column is arranged at the corner position of the cooling interval to promote the circulation of the coolant. The drainage motor is arranged inside the bottom surface of the preset outer shell to prevent the coolant from soaking the drainage motor.

[0009] Preferably, the flow guide plate is inclined and arranged at the corner position of the heat dissipation interval. There are two groups of flow guide plates, which are diagonally distributed inside the heat dissipation interval. A number of ventilation holes are arranged in an array on the surface of the flow guide plate.

[0010] Preferably, the shape of the heat dissipation shell is a square cylinder. Ventilation holes are provided on the surface of the heat dissipation shell at a position close to the flow guide plate to exchange the air flow inside and outside the heat dissipation shell.

[0011] Preferably, the synchronization unit includes a driving motor. A driving disk is fixedly connected to the output end of the driving motor. Tooth teeth are provided on the outer peripheral surface of the driving disk. Synchronization gears are provided on both sides of the outer surface of the driving disk. The upper end surface of the synchronization gear is connected to the elevating screw rod.

[0012] Preferably, the sealing mechanism includes a tooth ring sleeve. There are two groups of tooth ring sleeves, which are divided into an upper tooth ring sleeve and a lower tooth ring sleeve. Tooth teeth are provided on the surface of the upper tooth ring sleeve. A linkage pull ring is sleeved on the outer surface of the tooth ring sleeve. The linkage pull ring is used to drive the rotation of the upper tooth ring sleeve. The upper tooth ring sleeve is arranged on the rotating shaft surface of the sealing end cover. The lower tooth ring sleeve is arranged on the surface of the installation plate.

[0013] Preferably, an air exchange motor is arranged inside the ventilation hole, and an air exchange fan blade is arranged at the output end of the air exchange motor for accelerating the air circulation.

[0014] Preferably, the lower end of the outer surface of the tooth ring sleeve is connected to the outer surface of the installation cabinet. When the installation cabinet ascends or descends, it can drive the tooth ring sleeve to move. A section of teeth is arranged inside the upper end of the tooth ring sleeve, and the teeth are used to push the upper tooth ring sleeve to rotate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. For the embedded outdoor safety power cabinet, by setting the spaced grid plates, cooling intervals and heat dissipation intervals are formed on both sides of the spaced grid plates. The cooling liquid inside the cooling interval can continuously and evenly cool the grid plates. Through the airflow flowing inside the heat dissipation interval plate, the hot air flow can contact the grid plates, and the airflow can be cooled, achieving the effect of cooling the power cabinet and solving the problem that the heat dissipation effect of the embedded power cabinet is poor and it cannot effectively and continuously cool down.

[0016] 2. For the embedded outdoor safety power cabinet, by setting the lifting screw and the lifting frame to drive the installation plate and the installation cabinet to ascend and descend, the power equipment can be installed on the surface of the operating platform during installation, preventing the problem that there is no installation environment due to the small space when the power equipment is installed underground, making the installation and maintenance of the power equipment more convenient, and solving the problem that when installing and maintaining the embedded power cabinet, it is necessary to enter the equipment space underground for installation, which will cause inconvenience in installation and maintenance and small space.

[0017] 3. For the embedded outdoor safety power cabinet, when the installation cabinet ascends, it drives the linkage pull ring, and the linkage pull ring drives the upper tooth ring sleeve to rotate, so that the sealing end cover can be opened in time when the installation cabinet ascends and closed in time when the installation cabinet descends, achieving the effect of timely closing the heat dissipation shell to prevent sundries and dust from entering the installation cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall external structure of the present invention; Figure 2 is a schematic diagram of the preset outer shell structure of the present invention; Figure 3 is a schematic diagram of the spaced grid plate structure of the present invention; Figure 4 is a schematic diagram of the heat dissipation shell structure of the present invention; Figure 5 is an enlarged view of position A of the present invention; Figure 6 is an enlarged view of position B of the present invention; Figure 7 is a schematic diagram of the sealing end cover structure of the present invention; Figure 8 is a schematic diagram of the lifting frame structure of the present invention; Figure 9 This is the enlarged view of position C of the present invention; Figure 10 This is the structural schematic diagram of the sealing mechanism of the present invention; Figure 11 This is the enlarged view of position D of the present invention.

[0019] In the figure: 1, preset outer shell; 2, shielding frame; 3, operating table; 4, spaced grid plate; 5, cooling interval; 6, drainage mechanism; 61, drainage motor; 62, drainage fan blade column; 7, heat dissipation shell; 71, ventilation holes; 8, heat dissipation interval; 9, diversion plate; 91, ventilation holes; 92, ventilation motor; 93, ventilation fan blades; 10, sealing shell; 11, synchronization unit; 111, driving motor; 112, driving disc; 113, synchronization gear; 12, lifting screw; 13, placing table; 14, lifting frame; 15, mounting plate; 16, mounting cabinet; 17, sealing mechanism; 171, tooth ring sleeve; 1711, upper tooth ring sleeve; 1712, lower tooth ring sleeve; 172, linkage pull ring; 18, sealing end cover. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0021] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0022] In the present application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0023] In addition, in this application, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0024] As Figures 1-11 shown, a buried outdoor safety power cabinet includes a preset outer shell 1 and a shielding frame 2. An operating platform 3 is provided at the upper end of the preset outer shell 1. The shielding frame 2 penetrates through the operating platform 3 and is inserted into the ground around the preset outer shell 1. It can reinforce the ground around the preset outer shell 1, and the top can also shield the operating platform 3 from rain. An interval grid plate 4 is provided inside the preset outer shell 1. A cooling interval 5 is formed between the interval grid plate 4 and the preset outer shell 1. A drainage mechanism 6 is provided inside the cooling interval 5. The drainage mechanism 6 includes a drainage motor 61 and a drainage fan blade column 62. The cooling interval 5 is filled with a coolant. The drainage fan blade column 62 is arranged at the corner position of the cooling interval 5 to promote the circulation of the coolant. The drainage motor 61 is arranged inside the bottom surface of the preset outer shell 1 to prevent the coolant from soaking the drainage motor 61. The drainage mechanism 6 can push the coolant filled inside the cooling interval 5 to circulate, so that the coolant can evenly cool the interval grid plate 4.

[0025] A heat dissipation shell 7 is provided inside the preset outer shell 1. The heat dissipation shell 7 is arranged inside the interval grid plate 4. A heat dissipation interval 8 is formed between the inner wall of the interval grid plate 4 and the heat dissipation shell 7. The overall shape of the interval grid plate 4 is in a square frame shape. Grooves formed by repeated folding are provided on the surface of the interval grid plate 4 to increase the contact area between the cooling interval 5 and the heat dissipation interval 8. The interval grid plate 4 can increase the contact area on the surface by bending, making the cooling effect of the coolant better.

[0026] A flow guide plate 9 is provided inside the heat dissipation interval 8. The flow guide plate 9 is inclined and arranged at the corner position of the heat dissipation interval 8. There are two groups of flow guide plates 9 distributed diagonally inside the heat dissipation interval 8. A number of ventilation holes 91 are arranged in an array on the surface of the flow guide plate 9. The flow guide plate 9 can make the air flow inside the heat dissipation interval 8 circulate.

[0027] A sealing shell 10 is provided at the lower end of the preset outer shell 1. The heat dissipation shell 7 is in the shape of a square cylinder. Ventilation holes 71 are provided on the surface of the heat dissipation shell 7 at a position close to the flow guide plate 9 for exchanging the air flow inside and outside the heat dissipation shell 7. The heat dissipation shell 7 exchanges the air flow inside and outside by providing the ventilation holes 71, so that the hot air flow and the cold air can be exchanged to achieve the effect of cooling and heat dissipation.

[0028] Inside the sealed housing 10, a synchronization unit 11 is provided. Inside the ventilation hole 91, a ventilation motor 92 is provided. At the output end of the ventilation motor 92, a ventilation fan blade 93 is provided, which is used to accelerate the air circulation. The ventilation fan blade 93 provided inside the ventilation hole 91 can accelerate the air flow, so that the air can still circulate when a drying plate is added inside the heat dissipation interval 8.

[0029] Above the synchronization unit 11, a lifting screw 12 is provided. The lifting screw 12 penetrates through the bottom of the preset housing 1. The synchronization unit 11 includes a driving motor 111. At the output end of the driving motor 111, a driving disk 112 is fixedly connected. Tooth teeth are provided on the outer peripheral surface of the driving disk 112. Synchronization gears 113 are provided on both sides of the outer surface of the driving disk 112. The upper end surface of the synchronization gear 113 is connected to the lifting screw 12. The synchronization unit 11 can drive the two lifting screws 12 to rotate simultaneously.

[0030] At the inner bottom of the preset housing 1, a placement table 13 is provided. A lifting frame 14 is engaged with the outer surface of the lifting screw 12. An installation plate 15 is provided on the upper surface of the lifting frame 14. The installation plate 15 is placed above the placement table 13. Above the installation plate 15, an installation cabinet 16 is provided. Above the installation plate 15, a sealing mechanism 17 is provided. The upper end of the sealing mechanism 17 is connected to a sealing end cover 18. The sealing mechanism 17 includes a tooth ring sleeve 171. There are two groups of tooth ring sleeves 171, which are divided into an upper tooth ring sleeve 1711 and a lower tooth ring sleeve 1712. Tooth teeth are provided on the surface of the upper tooth ring sleeve 1711. A linkage pull ring 172 is sleeved on the outer surface of the tooth ring sleeve 171. The linkage pull ring 172 is used to push the upper tooth ring sleeve 1711 to rotate. The upper tooth ring sleeve 1711 is provided on the rotating shaft surface of the sealing end cover 18. The lower tooth ring sleeve 1712 is provided on the surface of the installation plate 15. The sealing mechanism 17 can timely close the upper end of the heat dissipation housing 7 to prevent foreign objects and dust from entering.

[0031] The sealing end cover 18 is rotatably connected to the operation table 3. The lower end of the outer surface of the tooth ring sleeve 171 is connected to the outer surface of the installation cabinet 16. When the installation cabinet 16 moves up and down, it can drive the tooth ring sleeve 171 to move. A section of tooth teeth is provided inside the upper end of the tooth ring sleeve 171. The tooth teeth are used to push the upper tooth ring sleeve 1711 to rotate. The tooth ring sleeve 171 can be driven to rotate at a specific position by the linkage pull ring 172, so that the upper tooth ring sleeve 1711 drives the sealing end cover 18 to rotate before contacting the rising installation cabinet 16, so that the sealing end cover 18 can be timely opened. When the installation cabinet 16 descends, when the installation cabinet 16 descends below the operation table 3, the linkage pull ring 172 drives the upper tooth ring sleeve 1711 to rotate, so that the sealing end cover 18 is timely closed.

[0032] In use, first embed the preset housing 1 into the ground, and insert the shielding frame 2 into the ground around the preset housing 1, which can not only reinforce the ground around the preset housing 1 but also shield the operating table 3 from rain. When electrical equipment needs to be installed, start the driving motor 111 to drive the driving disc 112 to rotate, so that the synchronous gears 113 on both sides drive the lifting screw 12 to rotate, making the lifting frame 14 drive the mounting plate 15 to lift from the surface of the placement table 13, and the installation cabinet 16 rises and extends out of the operating table 3 for convenient installation. While the installation cabinet 16 moves and rises, it drives the linkage pull ring 172 to rotate around the tooth ring sleeve 171, so that the gear on the inner surface of the linkage pull ring 172 drives the upper tooth ring sleeve 1711 to rotate when it rotates, making the upper tooth ring sleeve 1711 drive the sealing end cover 18 to rotate before the installation cabinet 16 rises and contacts, so that the sealing end cover 18 can be opened in time. When the installation cabinet 16 descends, when the installation cabinet 16 descends below the operating table 3, the linkage pull ring 172 drives the upper tooth ring sleeve 1711 to rotate, so that the sealing end cover 18 closes; Before the device is used, inject coolant into the cooling interval 5. Drive the drainage fan blade column 62 to rotate through the drainage motor 61, so that the coolant circulates inside the cooling interval 5, preventing the problem of poor local cooling effect caused by local temperature rise of the coolant. By starting the ventilation motor 92 inside the ventilation hole 91, the ventilation fan blade 93 rotates to blow the air flow to circulate inside the heat dissipation interval 8, so that the air flow can fully contact the spacer grid plate 4, and the coolant can use the spacer grid plate 4 to cool the air flow. By setting ventilation holes 71 on the surface of the heat dissipation shell 7, the air flow inside and outside the heat dissipation shell 7 can be exchanged to cool the installation cabinet 16, and a drying plate is added inside the heat dissipation interval 8 during the process of air flow passing through to dry the air flow.

[0033] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0034] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An embedded outdoor safety power cabinet, comprising a preset housing (1) and a shielding frame (2), characterized in that: An operating table (3) is arranged at the upper end of the preset shell (1), the shielding frame (2) passes through the operating table (3), a spacing grid (4) is arranged on the inner side of the preset shell (1), a cooling gap (5) is formed between the spacing grid (4) and the preset shell (1), a drainage mechanism (6) is arranged on the inner side of the cooling gap (5), a heat dissipation shell (7) is arranged on the inner side of the spacing grid (4), a heat dissipation gap (8) is formed between the inner wall of the spacing grid (4) and the heat dissipation shell (7), and a guide plate (9) is arranged on the inner side of the heat dissipation gap (8); A sealing shell (10) is arranged at the lower end of the preset shell (1), a synchronization unit (11) is arranged inside the sealing shell (10), a lifting screw (12) is arranged above the synchronization unit (11), the lifting screw (12) passes through the bottom of the preset shell (1), a placement table (13) is arranged at the bottom of the inner side of the preset shell (1), a lifting frame (14) is meshed on the outer surface of the lifting screw (12), a mounting plate (15) is arranged on the upper surface of the lifting frame (14), the mounting plate (15) is placed above the placement table (13), a mounting cabinet (16) is arranged above the mounting plate (15), a sealing mechanism (17) is arranged above the mounting plate (15), a sealing end cover (18) is connected to the upper end of the sealing mechanism (17), and the sealing end cover (18) is rotatably connected to the operating table (3).

2. The embedded outdoor safety power cabinet according to claim 1 is characterized in that: The spacer grid (4) has an overall square frame shape, and a groove formed by repeated folding is provided on the surface of the spacer grid (4) to increase the contact area between the cooling space (5) and the heat dissipation space (8).

3. The embedded outdoor safety power cabinet according to claim 1 is characterized in that: The drainage mechanism (6) comprises a drainage motor (61) and a drainage fan blade column (62); The inner side of the cooling space (5) is filled with coolant; The drainage fan blade column (62) is arranged at a corner position of the cooling interval (5) to promote the circulation of the coolant, and the drainage motor (61) is arranged on the inner side of the bottom surface of the preset shell (1) to prevent the coolant from soaking the drainage motor (61).

4. The embedded outdoor safety power cabinet according to claim 1 is characterized in that: The guide plates (9) are arranged obliquely at the corners of the heat dissipation interval (8); there are two groups of guide plates (9) distributed diagonally inside the heat dissipation interval (8); and a plurality of groups of ventilation holes (91) are arranged in an array on the surface of the guide plates (9).

5. The embedded outdoor safety power cabinet according to claim 1 is characterized in that: The heat dissipation shell (7) has a square cylindrical shape, and a ventilation hole (71) is provided on the surface of the heat dissipation shell (7). The ventilation hole (71) is located close to the guide plate (9) and is used to exchange airflow inside and outside the heat dissipation shell (7).

6. The embedded outdoor safety power cabinet according to claim 1, characterized in that: The synchronization unit (11) comprises a driving motor (111), the output end of the driving motor (111) being fixedly connected to a driving disk (112), the outer peripheral surface of the driving disk (112) being provided with teeth, both sides of the outer surface of the driving disk (112) being provided with synchronization gears (113), and the upper end surface of the synchronization gear (113) being connected to the lifting screw (12).

7. The embedded outdoor safety power cabinet according to claim 1, characterized in that: The sealing mechanism (17) comprises a gear ring sleeve (171), the gear ring sleeve (171) having two groups, namely an upper gear ring sleeve (1711) and a lower gear ring sleeve (1712), the upper gear ring sleeve (1711) having teeth on its surface, a linkage pull ring (172) being sleeved on the outer surface of the gear ring sleeve (171), the linkage pull ring (172) being used to push the upper gear ring sleeve (1711) to rotate, the upper gear ring sleeve (1711) being arranged on the surface of the rotating shaft of the sealing end cover (18), and the lower gear ring sleeve (1712) being arranged on the surface of the mounting plate (15).

8. The embedded outdoor safety power cabinet according to claim 4, characterized in that: A ventilation motor (92) is arranged inside the ventilation hole (91), and a ventilation fan blade (93) is arranged at the output end of the ventilation motor (92) to accelerate the circulation of air.

9. The embedded outdoor safety power cabinet according to claim 7, characterized in that: The lower end of the outer surface of the gear ring sleeve (171) is connected to the outer surface of the installation cabinet (16), and the installation cabinet (16) can drive the gear ring sleeve (171) to move when it is raised or lowered. A section of teeth is arranged on the inner side of the upper end of the gear ring sleeve (171), and the teeth are used to drive the upper gear ring sleeve (1711) to rotate.

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