Manual rotating device of mixer

Abstract

The utility model discloses a manual rotating device of a mixer, which relates to the field of mixers and is technically characterized by comprising a base, a stirring drum is arranged at the top of the base, a stirring component is arranged in the stirring drum, a transmission rotating shaft is rotatably connected in the base, the transmission rotating shaft and the stirring component are in coaxial transmission, and the transmission rotating shaft and the stirring component are in coaxial transmission. One side of the base is rotatably connected with a first transmission gear, the first transmission gear and the transmission rotating shaft are in coaxial transmission, and one side of the base is provided with a second transmission gear, so that the problems that the internal space of the mixer is relatively narrow, only one position in the mixer can allow an operator to stand, and the operation is inconvenient are solved. The technical problem that the stirring assembly is inconvenient to clean due to the fact that the stirring assembly is provided with a plurality of stirring blades, which means that an operator cannot freely move in the mixer, but the stirring assembly is provided with a plurality of stirring blades, so that the operator cannot clean the plurality of stirring blades of the stirring assembly at the same time in a narrow space is solved.

Description

Technical Field

[0001] The utility model relates to the field of mixers, and particularly to a manual rotation device for a mixer. Background Art

[0002] Before glass production, various raw materials required for manufacturing glass need to be prepared, mainly including quartz sand (silica sand), soda ash (sodium carbonate), limestone (calcium carbonate), etc. The ratio of these raw materials needs to be determined according to the type and quality requirements of the glass to be produced. Then, the prepared raw materials are put into the mixer in a certain order and proportion. Under the action of the stirring device, the raw materials start to be preliminarily mixed. The purpose of this stage is to make the various raw materials evenly distributed and reduce local concentration differences. However, after the stirring component of the mixer has been used for a long time, the stirring component will adhere to the glass raw materials. Therefore, it is necessary to manually clean the stirring component. However, due to the large volume of the mixer, when cleaning the stirring component, the operator needs to enter the interior of the mixer. However, the internal structure of the mixer is designed complexly, making the internal space of the mixer relatively narrow. Usually, there is only one position inside the mixer where the operator can stand, which means that the operator cannot move freely inside the mixer. However, there are multiple stirring blades on the stirring component of the mixer, resulting in the operator being unable to clean multiple stirring blades of the stirring component simultaneously in the narrow space. In the prior art, the drive motor usually needs to be frequently started to work to adjust the position of the stirring blades of the stirring component. However, since the drive motor drives the stirring component at a relatively fast speed, it is impossible to accurately adjust the position of the stirring blades of the stirring component, and the relatively fast speed also poses a danger to the personal safety of the operator, causing inconvenience in cleaning the stirring component. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a manual rotation device for a mixer, aiming to solve the technical problems that due to the relatively narrow internal space of the mixer, usually there is only one position inside the mixer where the operator can stand, which means that the operator cannot move freely inside the mixer. However, there are multiple stirring blades on the stirring component of the mixer, resulting in the operator being unable to clean multiple stirring blades of the stirring component simultaneously in the narrow space, causing inconvenience in cleaning the stirring component.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A manual rotation device for a mixer, comprising a base. A mixing barrel is provided at the top of the base. A mixing assembly is provided inside the mixing barrel. A transmission rotating shaft is rotatably connected inside the base. The transmission rotating shaft is coaxially driven with the mixing assembly. A first transmission gear is rotatably connected to one side of the base. The first transmission gear is coaxially driven with the transmission rotating shaft. A second transmission gear is provided on one side of the base. A transmission motor for driving the second transmission gear is provided on one side of the base. An adjustable gear is provided on one side of the base. The adjustable gear is located between the first transmission gear and the second transmission gear. The adjustable gear meshes with the first transmission gear and the second transmission gear. A rotation handle is provided on one side of the adjustable gear.

[0006] When the mixing blades of the mixing assembly need to be cleaned by an operator entering the mixing barrel, stop the transmission motor. When the operator cleans any one of the mixing blades of the mixing assembly, the operator can temporarily leave the mixing barrel. Then, an external person can manually rotate the rotation handle. The rotation handle drives the adjustable gear to rotate. The adjustable gear drives the first transmission gear to rotate. The first transmission gear drives the mixing blades of the mixing assembly to slowly adjust their positions, so that the operator can clean another mixing blade of the mixing assembly at the same position in the mixing barrel.

[0007] Further, in this application, it further includes a connection socket. A first connection seat is provided on one side of the base. The first connection seat is located between the first transmission gear and the second transmission gear. A first connection cavity is opened inside the first connection seat. A movable rotating shaft is provided on the other side of the adjustable gear. A rotating groove is opened inside the connection socket. The movable rotating shaft is rotatably connected to the rotating groove. The connection socket is detachably connected to the first connection cavity.

[0008] Since the adjustable gear needs to mesh with the first transmission gear and the second transmission gear during operation, the wear of the adjustable gear is relatively large, resulting in the adjustable gear being easily damaged. When the adjustable gear is damaged, the connection socket of the adjustable gear can be detached from the first connection cavity, thereby facilitating the replacement of a new adjustable gear.

[0009] Further, in this application, a second connection seat is provided on one side of the base. The second connection seat is far from the second transmission gear and close to the first transmission gear. A second connection cavity is opened inside the second connection seat. When the connection socket is detached from the first connection cavity, the connection socket is detachably connected to the second connection cavity.

[0010] When the stirring assembly is in the cleaning state, the connecting socket of the adjustable gear disengages from the first connecting cavity and is installed in the second connecting cavity of the second connecting seat. Since the second connecting seat is far from the second transmission gear and close to the first transmission gear, the adjustable gear can remain meshed with the first transmission gear while not meshing with the second transmission gear. That is, the driving motor cannot drive the first transmission gear to work by driving the second transmission gear, thus ensuring the personal safety of the operators inside the mixing drum.

[0011] Further, in the present application, a first fixing hole is provided inside the connecting socket, a second fixing hole is provided on one side of the first connecting seat, the second fixing hole communicates with the first connecting cavity, and a first fixing bolt is inserted through the second fixing hole. When the connecting socket is inserted into the first connecting cavity, the first fixing bolt is in threaded engagement with the first fixing hole.

[0012] Further, in the present application, a third fixing hole is provided on one side of the second connecting seat, the third fixing hole communicates with the second connecting cavity, and a second fixing bolt is inserted through the third fixing hole. When the connecting socket is inserted into the second connecting cavity, the second fixing bolt is in threaded engagement with the first fixing hole.

[0013] Further, in the present application, a first guiding chute is provided inside the first connecting cavity, a second guiding chute is provided inside the second connecting cavity, a guiding slider is provided on the outer edge of the connecting socket, and the guiding slider is in sliding fit with the first guiding chute or the second guiding chute.

[0014] Further, in the present application, a connecting bearing is provided inside the rotating groove, and the movable rotating shaft is in rotational fit with the inside of the connecting bearing.

[0015] Further, in the present application, a rotating insertion slot is provided on one side of the adjustable gear, a plurality of limiting insertion slots are provided on the outer edge of the rotating insertion slot, a rotating insertion block is provided on one side of the rotating handle, a plurality of limiting insertion protrusions are provided on the outer edge of the rotating insertion block, the rotating insertion block is inserted into the rotating insertion slot, and the plurality of limiting insertion protrusions are respectively inserted into the plurality of limiting insertion slots.

[0016] Further, in the present application, a fastening block is provided on one side of the limiting insertion protrusion, the fastening block is elastic, and the fastening block abuts against the limiting insertion slot.

[0017] Furthermore, in the present application, a first transmission cavity is formed at the top of the base, a first bevel gear is rotatably connected to the bottom of the mixing drum, the first bevel gear is coaxially driven with the mixing assembly, the first bevel gear is located inside the first transmission cavity, a second transmission cavity communicating with the first transmission cavity is formed on one side of the base, a stabilizing bearing is provided inside the second transmission cavity, the transmission rotating shaft is rotatably fitted inside the stabilizing bearing, a second bevel gear is provided at one end of the transmission rotating shaft, and the second bevel gear meshes with the first bevel gear.

[0018] The present utility model has the following beneficial effects:

[0019] When the mixing blades of the mixing assembly need to be cleaned by an operator entering the mixing drum, stop the driving motor. When the operator cleans any one of the mixing blades of the mixing assembly, the operator can temporarily leave the mixing drum, and then an external person can manually rotate the rotating handle. The rotating handle drives the adjustable gear to rotate, the adjustable gear drives the first transmission gear to rotate, and the first transmission gear drives the mixing blades of the mixing assembly to slowly adjust their positions, so that the operator can clean another mixing blade of the mixing assembly at the same position in the mixing drum. Description of the Drawings

[0020] Figure 1 is a schematic structural view of the present utility model.

[0021] Figure 2 is a schematic structural view of the first transmission cavity and the second transmission cavity of the present utility model.

[0022] Figure 3 is a schematic structural view of the transmission rotating shaft of the present utility model.

[0023] Figure 4 is a schematic structural view of the adjustable gear of the present utility model.

[0024] Wherein, reference numerals:

[0025] 1. Base; 2. Mixing drum; 3. Mixing assembly; 4. First transmission cavity; 5. Second transmission cavity; 6. First bevel gear; 7. Transmission rotating shaft; 8. Second bevel gear; 9. Stable bearing; 10. First transmission gear; 11. Adjustable gear; 12. Second transmission gear; 13. Rotating slot; 14. Rotating plug; 15. Rotating handle; 16. Limiting plug; 17. Limiting slot; 18. Fastening block; 19. Movable rotating shaft; 20. Connecting bearing; 21. Connecting socket; 22. First connecting seat; 23. First connecting cavity; 24. Second fixing hole; 25. First fixing bolt; 26. First fixing hole; 27. Guide slider; 28. First guide chute; 29. Second connecting seat; 30. Second connecting cavity; 31. Second fixing bolt; 32. Third fixing hole; 33. Second guide chute; 34. Transmission motor; 35. Rotating groove. Detailed implementation manner

[0026] The following details the implementation manners of the present utility model. Examples of the implementation manners are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The implementation manners described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Referring to Figures 1-4 , in some specific embodiments, a manual rotation device of a mixer includes a base 1. A mixing cylinder 2 is provided on the top of the base 1. A mixing assembly 3 is provided inside the mixing cylinder 2. A transmission rotating shaft 7 is rotatably connected inside the base 1. The transmission rotating shaft 7 is coaxially driven with the mixing assembly 3. A first transmission gear 10 is rotatably connected to one side of the base 1. The first transmission gear 10 is coaxially driven with the transmission rotating shaft 7. A second transmission gear 12 is provided on one side of the base 1. A transmission motor 34 for driving the second transmission gear 12 is provided on one side of the base 1. An adjustable gear 11 is provided on one side of the base 1. The adjustable gear 11 is located between the first transmission gear 10 and the second transmission gear 12. The adjustable gear 11 meshes with the first transmission gear 10 and the second transmission gear 12. A rotation handle 15 is provided on one side of the adjustable gear 11.

[0030] Through the above technical solution, when the mixer is working normally, the transmission motor 34 is started. The transmission motor 34 drives the second transmission gear 12 to rotate. Since the second transmission gear 12 meshes with the adjustable gear 11, and the adjustable gear 11 meshes with the first transmission gear 10, when the second transmission gear 12 rotates, it drives the first transmission gear 10 to rotate. The first transmission gear 10 drives the transmission rotating shaft 7 to rotate, so that the mixing assembly 3 mixes the materials in the mixing cylinder 2. When the mixing blades of the mixing assembly 3 need to be cleaned by an operator entering the mixing cylinder 2, the transmission motor 34 is stopped. When the operator cleans any one of the mixing blades of the mixing assembly 3, the operator can temporarily leave the mixing cylinder 2. Then, an external person can manually rotate the rotation handle 15. The rotation handle 15 drives the adjustable gear 11 to rotate. The adjustable gear 11 drives the first transmission gear 10 to rotate. The first transmission gear 10 drives the mixing blades of the mixing assembly 3 to slowly adjust the position, so that the operator can clean another mixing blade of the mixing assembly 3 at the same position in the mixing cylinder 2.

[0031] Referring to Figures 1-4, in some specific embodiments, it further includes a connection socket 21. One side of the base 1 is provided with a first connection seat 22. The first connection seat 22 is located between the first transmission gear 10 and the second transmission gear 12. A first connection cavity 23 is formed inside the first connection seat 22. The other side of the adjustable gear 11 is provided with a movable rotating shaft 19. A rotating groove 35 is formed inside the connection socket 21. The movable rotating shaft 19 is rotatably connected to the rotating groove 35. The connection socket 21 is detachably connected to the first connection cavity 23.

[0032] Through the above technical solution, since the adjustable gear 11 needs to mesh with the first transmission gear 10 and the second transmission gear 12 during operation, the adjustable gear 11 is worn more severely, resulting in easy damage to the adjustable gear 11. When the adjustable gear 11 is damaged, the connection socket 21 of the adjustable gear 11 can be disengaged from the first connection cavity 23, facilitating the replacement of a new adjustable gear 11.

[0033] Refer to Figures 1-4 , in some specific embodiments, one side of the base 1 is provided with a second connection seat 29. The second connection seat 29 is far from the second transmission gear 12 and close to the first transmission gear 10. A second connection cavity 30 is formed inside the second connection seat 29. When the connection socket 21 is disengaged from the first connection cavity 23, the connection socket 21 is detachably connected to the second connection cavity 30.

[0034] Through the above technical solution, when the stirring assembly 3 is being cleaned, since the adjustable gear 11 still remains meshed with the first transmission gear 10 and the second transmission gear 12, if an external operator who is unaware accidentally starts the transmission motor 34, it may cause casualties to the operators inside the mixing drum 2. In this regard, when the stirring assembly 3 is in a cleaning state, the connection socket 21 of the adjustable gear 11 is disengaged from the first connection cavity 23 and installed in the second connection cavity 30 of the second connection seat 29. Since the second connection seat 29 is far from the second transmission gear 12 and close to the first transmission gear 10, the adjustable gear 11 can remain meshed with the first transmission gear 10 while not meshing with the second transmission gear 12, that is, the transmission motor 34 cannot drive the first transmission gear 10 to work by driving the second transmission gear 12, thus ensuring the personal safety of the operators inside the mixing drum 2.

[0035] Refer to Figure 4 , in some specific embodiments, a first fixing hole 26 is formed inside the connection socket 21. A second fixing hole 24 is formed on one side of the first connection seat 22. The second fixing hole 24 communicates with the first connection cavity 23. A first fixing bolt 25 is inserted into the second fixing hole 24. When the connection socket 21 is inserted into the first connection cavity 23, the first fixing bolt 25 is in threaded fit with the first fixing hole 26.

[0036] Through the above technical solution, when it is necessary to disassemble the connection socket 21 from the first connection cavity 23, the first fixing bolt 25 can be loosened to separate the connection socket 21 from the first connection seat 22, thereby facilitating the replacement of the adjustable gear 11 or facilitating the adjustment of the position of the adjustable gear 11.

[0037] Refer to Figure 4 , in some specific embodiments, a third fixing hole 32 is formed on one side of the second connection seat 29. The third fixing hole 32 communicates with the second connection cavity 30. A second fixing bolt 31 is inserted into the third fixing hole 32. When the connection socket 21 is inserted into the second connection cavity 30, the second fixing bolt 31 is in threaded engagement with the first fixing hole 26.

[0038] Through the above technical solution, when the connection socket 21 is inserted into the second connection cavity 30, the second fixing bolt 31 passes through the third fixing hole 32, so that the second fixing bolt 31 is in threaded engagement with the first fixing hole 26, thereby facilitating the fixing of the position of the adjustable gear 11.

[0039] Refer to Figure 4 , in some specific embodiments, a first guiding chute 28 is formed inside the first connection cavity 23, a second guiding chute 33 is formed inside the second connection cavity 30, a guiding slider 27 is provided on the outer edge of the connection socket 21, and the guiding slider 27 is in sliding fit with the first guiding chute 28 or the second guiding chute 33.

[0040] Through the above technical solution, the guiding slider 27 is in sliding fit with the first guiding chute 28 or the second guiding chute 33, ensuring that when the connection socket 21 is inserted into the first connection cavity 23 of the first connection seat 22 or the second connection cavity 30 of the second connection seat 29, it can be accurately aligned and positioned along the first guiding chute 28 or the second guiding chute 33.

[0041] Refer to Figure 4 , in some specific embodiments, a connection bearing 20 is provided inside the rotation groove 35, and the movable rotating shaft 19 is in rotational fit with the inside of the connection bearing 20.

[0042] Refer to Figure 4 , in some specific embodiments, a rotation slot 13 is formed on one side of the adjustable gear 11. A plurality of limit slots 17 are formed on the outer edge of the rotation slot 13. A rotation plug 14 is provided on one side of the rotation handle 15. A plurality of limit protrusions 16 are provided on the outer edge of the rotation plug 14. The rotation plug 14 is inserted into the rotation slot 13, and the plurality of limit protrusions 16 are respectively inserted into the plurality of limit slots 17.

[0043] Through the above technical solution, when it is necessary to slowly drive the adjustable gear 11 to rotate, the rotating insertion block 14 of the rotating handle 15 is inserted into the rotating slot 13. When the rotating insertion block 14 is inserted into the rotating slot 13 and the plurality of limiting insertion protrusions 16 are respectively inserted into the plurality of limiting slots 17, when the rotating handle 15 rotates, the adjustable gear 11 is driven to rotate, so as to realize the precise adjustment of the position of the stirring assembly 3.

[0044] Referring to Figure 4 , in some specific embodiments, a fastening block 18 is provided on one side of the limiting insertion protrusion 16. The fastening block 18 has elasticity and the fastening block 18 abuts against the limiting slot 17.

[0045] Through the above technical solution, when the plurality of limiting insertion protrusions 16 are respectively inserted into the plurality of limiting slots 17, the fastening block 18 abuts against the limiting slot 17, thereby strengthening the firmness of the rotating handle 15 and preventing the rotating handle 15 from detaching from the adjustable gear 11 when rotating.

[0046] Referring to Figures 2-3 , in some specific embodiments, a first transmission cavity 4 is formed at the top of the base 1. A first bevel gear 6 is rotatably connected to the bottom of the mixing barrel 2. The first bevel gear 6 is coaxially driven with the stirring assembly 3. The first bevel gear 6 is located inside the first transmission cavity 4. A second transmission cavity 5 communicating with the first transmission cavity 4 is formed on one side of the base 1. A stable bearing 9 is provided inside the second transmission cavity 5. The transmission rotating shaft 7 is rotatably fitted with the inside of the stable bearing 9. A second bevel gear 8 is provided at one end of the transmission rotating shaft 7. The second bevel gear 8 meshes with the first bevel gear 6.

[0047] Through the above technical solution, when the first transmission gear 10 rotates, the first transmission gear 10 drives the transmission rotating shaft 7 to rotate, and the transmission rotating shaft 7 drives the second bevel gear 8 to rotate. Since the second bevel gear 8 meshes with the first bevel gear 6, when the second bevel gear 8 rotates, the first bevel gear 6 is driven to rotate, so as to facilitate driving the stirring assembly 3 to rotate.

[0048] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device.

Claims

1. A manual rotation device for a mixing machine, comprising a base, a mixing cylinder is provided at the top of the base, a mixing assembly is provided inside the mixing cylinder, a transmission rotating shaft is rotatably connected inside the base, the transmission rotating shaft is coaxially driven with the mixing assembly, a first transmission gear is rotatably connected to one side of the base, the first transmission gear is coaxially driven with the transmission rotating shaft, a second transmission gear is provided on one side of the base, and a transmission motor for driving the second transmission gear is provided on one side of the base, characterized in that, One side of the base is provided with an adjustable gear, which is located between the first transmission gear and the second transmission gear. The adjustable gear meshes with the first transmission gear and the second transmission gear, and a rotating handle is provided on one side of the adjustable gear.

2. The manual rotation device of a mixing machine according to claim 1, characterized in that, It further includes a connection socket. One side of the base is provided with a first connection seat, which is located between the first transmission gear and the second transmission gear. A first connection cavity is formed inside the first connection seat. An activity rotating shaft is provided on the other side of the adjustable gear. A rotating groove is formed inside the connection socket. The activity rotating shaft is rotatably connected to the rotating groove. The connection socket is detachably connected to the first connection cavity.

3. The manual rotation device of a mixer according to claim 2, characterized in that, One side of the base is provided with a second connection seat, which is far away from the second transmission gear and close to the first transmission gear. A second connection cavity is formed inside the second connection seat. When the connection socket is separated from the first connection cavity, the connection socket is detachably connected to the second connection cavity.

4. The manual rotation device of a mixing machine according to claim 3, characterized in that, A first fixing hole is formed inside the connection socket. A second fixing hole is formed on one side of the first connection seat. The second fixing hole communicates with the first connection cavity. A first fixing bolt is inserted into the second fixing hole. When the connection socket is inserted into the first connection cavity, the first fixing bolt is in threaded fit with the first fixing hole.

5. The manual rotation device of a mixing machine according to claim 4, characterized in that, A third fixing hole is formed on one side of the second connection seat. The third fixing hole communicates with the second connection cavity. A second fixing bolt is inserted into the third fixing hole. When the connection socket is inserted into the second connection cavity, the second fixing bolt is in threaded fit with the first fixing hole.

6. The manual rotation device of a mixing machine according to claim 5, characterized in that, A first guiding sliding groove is formed inside the first connection cavity. A second guiding sliding groove is formed inside the second connection cavity. A guiding sliding block is provided on the outer edge of the connection socket. The guiding sliding block is in sliding fit with the first guiding sliding groove or the second guiding sliding groove.

7. The manual rotation device of a mixing machine according to claim 2, characterized in that, A connection bearing is provided inside the rotating groove. The activity rotating shaft is rotatably fitted with the inside of the connection bearing.

8. The manual rotation device of a mixing machine according to claim 1, characterized in that, A rotating insertion slot is formed on one side of the adjustable gear. A plurality of limiting insertion slots are formed on the outer edge of the rotating insertion slot. A rotating insertion block is provided on one side of the rotating handle. A plurality of limiting insertion protrusions are provided on the outer edge of the rotating insertion block. The rotating insertion block is inserted into the rotating insertion slot, and the plurality of limiting insertion protrusions are respectively inserted into the plurality of limiting insertion slots.

9. The manual rotation device of a mixing machine according to claim 8, characterized in that, A fastening block is provided on one side of the limiting insertion protrusion. The fastening block has elasticity and abuts against the limiting insertion slot.

10. The manual rotation device of a mixing machine according to claim 1, characterized in that, A first transmission cavity is formed at the top of the base. A first bevel gear is rotatably connected to the bottom of the mixing drum. The first bevel gear is coaxially driven with the mixing assembly. The first bevel gear is located inside the first transmission cavity. A second transmission cavity communicating with the first transmission cavity is formed on one side of the base. A stabilizing bearing is provided inside the second transmission cavity. The transmission rotating shaft is rotatably fitted with the inside of the stabilizing bearing. A second bevel gear is provided at one end of the transmission rotating shaft. The second bevel gear meshes with the first bevel gear.

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