Speed reducer special for double-input tower crane

Abstract

The utility model discloses a speed reducer special for a double-input tower crane, which belongs to the technical field of tower cranes, and is characterized in that the speed reducer comprises a tower crane planetary speed reducer body, and flushing mechanisms are arranged on the front side and the rear side of the tower crane planetary speed reducer body; the surface of the tower crane planetary reducer body is movably sleeved with a fixing ring; the problems that when lubricating oil is maintained and replaced in most existing planetary reducers special for tower cranes, the interiors of the planetary reducers special for the tower cranes are inconvenient to wash, waste lubricating oil is not thoroughly discharged, and the maintenance effect is poor are solved. And when the special planetary reducer for the tower crane needs to be disassembled after being mounted by using more bolts, more bolts still need to be disassembled, so that the special planetary reducer for the tower crane is more time-consuming and labor-consuming to disassemble, and the use effect is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of tower cranes, in particular to a special reducer for double-input tower cranes. Background Art

[0002] A planetary reducer is a power transmission mechanism that uses a gear speed converter to reduce the motor's rotation speed to the desired number of rotations and obtain a larger torque. The gear with fewer teeth on the planetary reducer's transmission shaft meshes with the large gear on the output shaft to achieve the purpose of deceleration. In tower cranes, planetary reducers are one of the important components.

[0003] It is inconvenient to flush the interior of most of the existing planetary reducers dedicated to tower cranes during maintenance and replacement of lubricating oil, which easily leads to incomplete discharge of waste lubricating oil and poor maintenance effect. In addition, when the planetary reducer dedicated to tower cranes is installed with many bolts and needs to be disassembled, many bolts still need to be disassembled, which is time-consuming and labor-intensive. Utility Model Content

[0004] The utility model provides a double-input special reducer for tower cranes, aiming to solve the problem that it is inconvenient to flush the interior of most existing special planetary reducers for tower cranes when the lubricating oil is replaced during maintenance, which easily leads to incomplete discharge of waste lubricating oil and poor maintenance effect, and more bolts are still needed to be removed when the special planetary reducer for tower cranes needs to be disassembled after installation, which makes the disassembly of the special planetary reducer for tower cranes time-consuming and laborious, thus affecting the use effect.

[0005] The utility model is realized as follows: a double-input tower crane special reducer comprises a tower crane planetary reducer body, the front and rear sides of the tower crane planetary reducer body are provided with flushing mechanisms, and the surface movable sleeve of the tower crane planetary reducer body is provided with a fixing ring;

[0006] The flushing mechanism includes a through groove, a plurality of through holes and an oil filling pipe, wherein the through groove is arranged inside the tower crane planetary reducer body, the through holes are arranged on the inner wall of the tower crane planetary reducer body, the through groove is connected with the through holes, the oil filling pipe is fixedly connected with the tower crane planetary reducer body on one side close to the tower crane planetary reducer body, and the oil filling pipe is connected with the through groove.

[0007] In order to facilitate the tight connection between the external oil delivery pipe and the oil filling pipe, as a preferred dual-input tower crane-specific reducer of the utility model, the surface fixing sleeve of the oil filling pipe is provided with an anti-slip ring, and the number of the anti-slip rings is several and evenly distributed on the surface of the oil filling pipe.

[0008] In order to achieve the effect of sealing the oil filling pipes, as a preferred double-input tower crane-specific reducer of the utility model, sealing covers are provided on opposite sides of the two oil filling pipes, and the surfaces of the sealing covers are threadedly connected to the inner walls of the oil filling pipes.

[0009] In order to achieve the effect of facilitating the rotation of the sealing cover, as a preferred embodiment of the utility model of a double-input tower crane-specific reducer, a groove is provided inside the sealing cover.

[0010] In order to prevent the tower crane planetary reducer body from slipping off the fixed ring, a dual-input tower crane-specific reducer of the utility model is preferably provided with a limiting ring on the surface fixing sleeve of the tower crane planetary reducer body, and the surface of the tower crane planetary reducer body is in active contact with the inner wall of the fixed ring, and the bottom of the limiting ring is in contact with the top of the fixed ring.

[0011] In order to achieve the effect of conveniently connecting the tower crane planetary reducer body and the fixed ring together, as a preferred double-input tower crane special reducer of the utility model, the top of the fixed ring is fixedly connected with a clamping block, the surface of the limit ring is fixedly connected with the limit block, the limit block is movably inserted into the inside of the clamping block, and the number of the clamping block and the limit block are both several and are evenly distributed on the top of the fixed ring and the surface of the limit ring.

[0012] In order to achieve the effect of facilitating the rotation of the tower crane planetary reducer body, as a preferred dual-input tower crane-specific reducer of the utility model, both sides of the top of the limit ring are fixedly connected with shift blocks, and the surface of the shift block is fixedly connected with an anti-sliding block, and the number of the anti-sliding blocks is several and evenly distributed on the surface of the shift block.

[0013] In order to prevent the block from being separated from the limit block, a dual-input tower crane-specific reducer of the utility model is preferably provided with a limit column on the top of the limit ring, and a limit hole is provided inside the fixed ring. The number of the limit column and the number of the limit hole are both four, and the bottom of the limit column passes through the limit ring and extends to the inside of the limit hole.

[0014] In order to prevent the limit column from being separated from the limit hole, a dual-input tower crane-specific reducer is preferably configured in the present invention in which a strong magnet is fixedly connected to the bottom of the limit column, the bottom of the strong magnet is magnetically attracted to the bottom of the inner wall of the limit hole, and a pull ring is fixedly connected to the surface of the limit column.

[0015] In order to facilitate the installation of the fixing ring, as a preferred double-input tower crane-specific reducer of the utility model, the fixing ring is provided with mounting holes inside, and the number of the mounting holes is several and evenly distributed inside the fixing ring.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The special planetary reducer design suitable for tower cranes uses an external bolt to pass through the mounting hole, and the external bolt is threadedly connected to the position where the tower crane planetary reducer body needs to be installed. At this time, the fixing ring can be fixed, and then the tower crane planetary reducer body is passed through the fixing ring, the dial block is rotated to make the limit block contact the inner wall of the card block, and then the limit column is inserted into the limit hole to connect the tower crane planetary reducer body with the fixing ring, so as to fix and install the tower crane planetary reducer body. When the tower crane planetary reducer body needs to be disassembled and the internal lubricating oil needs to be replaced, it is only necessary to pull out the four limit columns upwards, and then rotate the tower crane planetary reducer body to make the limit block disengage from the card block, and then the tower crane planetary reducer body can be pulled out from the inside of the fixing ring, and the tower crane planetary reducer body can be disassembled, which saves time and effort and does not need to be reassembled. By twisting more screws and removing the sealing cover, the external oil delivery pipe can be plugged and connected with the oil filling pipe, the lubricating oil can be injected into the through groove through the oil filling pipe, and then evenly sprayed into the interior of the tower crane planetary reducer body through a plurality of through holes, the gears inside the tower crane planetary reducer body can be flushed, and then new lubricating oil can be injected and the sealing cover can be reset to quickly reinstall and use the tower crane planetary reducer body, avoiding the problem that it is inconvenient to flush the interior of the tower crane special planetary reducer when the lubricating oil is replaced during maintenance of most existing tower crane special planetary reducers, which easily leads to incomplete discharge of waste lubricating oil and poor maintenance effect, and when the tower crane special planetary reducer needs to be disassembled after installation using more bolts, more bolts still need to be disassembled, and the disassembly of the tower crane special planetary reducer is relatively time-consuming and laborious. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure diagram of the special planetary reducer designed for tower crane of the utility model;

[0019] Figure 2 It is a three-dimensional connection diagram of the planetary reducer body and the limit ring of the tower crane in the utility model;

[0020] Figure 3 It is a three-dimensional cross-sectional view of the internal structure of the planetary reducer body of the tower crane in the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional connection between the fixing ring and the clamping block in the utility model;

[0022] Figure 5 It is a schematic diagram of the three-dimensional connection between the limit column and the pull ring in the utility model;

[0023] Figure 6 It is a three-dimensional connection diagram of the shifting block and the anti-sliding block in the utility model;

[0024] Figure 7 It is a three-dimensional exploded schematic diagram of the oil filling pipe and the sealing cover in the utility model.

[0025] In the figure, 1. tower crane planetary reducer body; 2. limit ring; 3. fixing ring; 4. clamping block; 5. flushing mechanism; 501. through groove; 502. through hole; 503. oil filling pipe; 6. shift block; 7. limit column; 8. limit block; 9. sealing cover; 10. mounting hole; 11. limit hole; 12. pull ring; 13. strong magnet; 14. anti-slip block; 15. anti-slip ring; 16. groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] See also Figure 1-7The utility model provides a technical solution: a double-input tower crane special reducer, including a tower crane planetary reducer body 1, the front and rear sides of the tower crane planetary reducer body 1 are provided with a flushing mechanism 5, and the surface movable sleeve of the tower crane planetary reducer body 1 is provided with a fixing ring 3;

[0029] The flushing mechanism 5 includes a through groove 501, a plurality of through holes 502 and an oil filling pipe 503. The through groove 501 is arranged inside the tower crane planetary reducer body 1, the through holes 502 are arranged on the inner wall of the tower crane planetary reducer body 1, the through groove 501 is connected with the through holes 502, the oil filling pipe 503 is fixedly connected with the tower crane planetary reducer body 1 on one side close to the tower crane planetary reducer body 1, and the oil filling pipe 503 is connected with the through groove 501.

[0030] In this embodiment: by using an external bolt to pass through the mounting hole 10, the external bolt is threadedly connected to the position where the tower crane planetary reducer body 1 needs to be installed. At this time, the fixing ring 3 can be fixed, and then the tower crane planetary reducer body 1 is passed through the fixing ring 3, the dial block 6 is rotated to make the limit block 8 contact the inner wall of the clamping block 4, and then the limit column 7 is inserted into the limiting hole 11 to connect the tower crane planetary reducer body 1 with the fixing ring 3, so that the tower crane planetary reducer body 1 is fixedly installed. When the tower crane planetary reducer body 1 needs to be disassembled and the internal lubricating oil needs to be replaced, it is only necessary to pull out the four limit columns 7 upwards, and then rotate the tower crane planetary reducer body 1 to make the limit block 8 disengage from the clamping block 4, and then the tower crane planetary reducer body 1 can be pulled out from the inside of the fixing ring 3, and the tower crane planetary reducer body 1 can be disassembled, which saves time and effort, and there is no need to twist more again. The screws can be inserted and connected with the oil filling pipe 503 after the sealing cover 9 is removed, and the lubricating oil can be injected into the through groove 501 through the oil filling pipe 503, and then evenly sprayed into the interior of the tower crane planetary reducer body 1 through a plurality of through holes 502, so that the gears inside the tower crane planetary reducer body 1 can be flushed, and then new lubricating oil can be injected and the sealing cover 9 can be reset to quickly reinstall and use the tower crane planetary reducer body 1, thereby avoiding the problem that it is inconvenient to flush the interior of the tower crane special planetary reducer when the lubricating oil is replaced during maintenance of most existing tower crane special planetary reducers, which easily leads to incomplete discharge of waste lubricating oil and poor maintenance effect, and when the tower crane special planetary reducer needs to be disassembled after being installed with more bolts, more bolts still need to be disassembled, and the disassembly of the tower crane special planetary reducer is relatively time-consuming and laborious.

[0031] As a technical optimization solution of the utility model, the surface of the oil filling pipe 503 is fixedly sleeved with an anti-slip ring 15 , and the number of the anti-slip rings 15 is several and evenly distributed on the surface of the oil filling pipe 503 .

[0032] In this embodiment: by plugging the external oil pipe and the fixed pipe together, the inner wall of the external oil pipe will be in close contact with the anti-slip ring 15 on the surface of the oil filling pipe 503, so that the external oil pipe and the oil filling pipe 503 can be connected more tightly, achieving the effect of conveniently connecting the external oil pipe and the oil filling pipe 503 tightly.

[0033] As a technical optimization solution of the utility model, sealing covers 9 are provided on opposite sides of the two oil filling pipes 503 , and the surface of the sealing covers 9 is threadedly connected to the inner wall of the oil filling pipe 503 .

[0034] In this embodiment, the oil filling pipe 503 can be sealed by threading the sealing cover 9 to the inner wall of the oil filling pipe 503 , thereby achieving the effect of sealing the oil filling pipe 503 .

[0035] As a technical optimization solution of the present invention, a groove 16 is provided inside the sealing cover 9 .

[0036] In this embodiment, the sealing cover 9 can be conveniently rotated by inserting an external flat-blade screwdriver into the groove 16 , thereby achieving the effect of conveniently rotating the sealing cover 9 .

[0037] As a technical optimization solution of the utility model, a surface fixing sleeve of the tower crane planetary reducer body 1 is provided with a limit ring 2, the surface of the tower crane planetary reducer body 1 is in active contact with the inner wall of the fixing ring 3, and the bottom of the limit ring 2 is in contact with the top of the fixing ring 3.

[0038] In this embodiment: by passing the tower crane planetary reducer body 1 through the fixing ring 3, the bottom of the limiting ring 2 is made to contact the top of the fixing ring 3. At this time, the limiting ring 2 can limit the tower crane planetary reducer body 1 to prevent the tower crane planetary reducer body 1 and the fixing ring 3 from slipping off, thereby achieving the effect of preventing the tower crane planetary reducer body 1 and the fixing ring 3 from slipping off.

[0039] As a technical optimization solution of the utility model, a clamping block 4 is fixedly connected to the top of the fixing ring 3, a limiting block 8 is fixedly connected to the surface of the limiting ring 2, and the limiting block 8 is movably inserted into the inside of the clamping block 4. The number of clamping blocks 4 and the number of limiting blocks 8 are both several and are evenly distributed on the top of the fixing ring 3 and the surface of the limiting ring 2, respectively.

[0040] In this embodiment: by rotating the limit ring 2 and the tower crane planetary reducer body 1, the tower crane planetary reducer body 1 is rotated until the limit block 8 moves into the inside of the blocking block 4. At this time, the tower crane planetary reducer body 1 can be connected with the fixing ring 3, thereby achieving the effect of conveniently connecting the tower crane planetary reducer body 1 with the fixing ring 3.

[0041] As a technical optimization solution of the utility model, both sides of the top of the limit ring 2 are fixedly connected with a shift block 6, and the surface of the shift block 6 is fixedly connected with an anti-sliding block 14. The number of anti-sliding blocks 14 is several and evenly distributed on the surface of the shift block 6.

[0042] In this embodiment, the planetary reducer body 1 of the tower crane can be conveniently rotated by moving the hand-held shifting block 6 and the anti-sliding block 14, thereby achieving the effect of conveniently rotating the planetary reducer body 1 of the tower crane.

[0043] As a technical optimization solution of the utility model, a limiting column 7 is arranged on the top of the limiting ring 2, and a limiting hole 11 is opened inside the fixing ring 3. The number of the limiting column 7 and the number of the limiting hole 11 are both four, and the bottom of the limiting column 7 passes through the limiting ring 2 and extends to the inside of the limiting hole 11.

[0044] In this embodiment: by extending the limiting column 7 through the limiting ring 2 to the inside of the limiting hole 11, the limiting ring 2 can be limited to prevent the clamping block 4 from being separated from the limiting block 8, thereby achieving the effect of preventing the clamping block 4 from being separated from the limiting block 8.

[0045] As a technical optimization solution of the utility model, a strong magnet 13 is fixedly connected to the bottom of the limiting column 7, the bottom of the strong magnet 13 is magnetically attracted to the bottom of the inner wall of the limiting hole 11, and a pull ring 12 is fixedly connected to the surface of the limiting column 7.

[0046] In this embodiment: through the magnetic attraction between the strong magnet 13 at the bottom of the limiting column 7 and the bottom of the inner wall of the limiting hole 11, the strong magnet 13 can limit the limiting column 7 to prevent the limiting column 7 from separating from the limiting hole 11, thereby achieving the effect of preventing the limiting column 7 from separating from the limiting hole 11.

[0047] As a technical optimization solution of the present invention, a mounting hole 10 is opened inside the fixing ring 3 , and the number of the mounting holes 10 is several and evenly distributed inside the fixing ring 3 .

[0048] In this embodiment: by using an external bolt to pass through the mounting hole 10, the external bolt is threadedly connected to the position where the tower crane planetary reducer body 1 needs to be installed, and then the fixing ring 3 can be installed, achieving the effect of facilitating the installation of the fixing ring 3.

[0049] Working principle: First, use an external bolt to pass through the mounting hole 10, and thread the external bolt to the position where the tower crane planetary reducer body 1 needs to be installed. At this time, the fixing ring 3 can be fixed, and then the tower crane planetary reducer body 1 is passed through the fixing ring 3, so that the bottom of the limiting ring 2 contacts the top of the fixing ring 3. At this time, the limiting ring 2 can limit the tower crane planetary reducer body 1 to prevent the tower crane planetary reducer body 1 and the fixing ring 3 from slipping. Then, hold the dial block 6 to move, and the limiting ring 2 and the tower crane planetary reducer body 1 can be rotated. Rotate the tower crane planetary reducer body 1 until the limiting block 8 moves to the inside of the block 4. At this time, the tower crane planetary reducer can be The reducer body 1 is connected to the fixing ring 3, and then the limiting column 7 passes through the limiting ring 2 and extends to the inside of the limiting hole 11. At this time, the limiting column 7 can limit the limiting ring 2 to prevent the limiting ring 2 from rotating and causing the limiting block 8 to separate from the clamping block 4. The strong magnet 13 at the bottom of the limiting column 7 is magnetically attracted to the bottom of the inner wall of the limiting hole 11. The strong magnet 13 can limit the limiting column 7 to prevent the limiting column 7 from separating from the limiting hole 11, thereby preventing the limiting block 8 from separating from the clamping block 4. At this time, the tower crane planetary reducer body 1 can be stably connected to the fixing ring 3, so that the tower crane planetary reducer body 1 is fixedly installed. When the tower crane planetary reducer body 1 needs to be disassembled and the internal lubricating oil replaced , you only need to pull out the four limit columns 7 upwards, and then rotate the tower crane planetary reducer body 1 to disengage the limit block 8 from the clamping block 4, and then pull the tower crane planetary reducer body 1 out from the inside of the fixing ring 3, and then disassemble the tower crane planetary reducer body 1, which saves time and effort, and does not need to screw many screws again. When it is necessary to replace the lubricating oil inside the tower crane planetary reducer body 1, use an external flat-blade screwdriver to insert the groove 16, and then the sealing cover 9 can be easily rotated. The sealing cover 9 is connected to the inner wall of the oil filling pipe 503 through a thread. When the sealing cover 9 is rotated, the sealing cover 9 can be disengaged from the oil filling pipe 503, and the waste lubricating oil is discharged from the tower crane planetary reducer body 1, and then By plugging and connecting the external oil delivery pipe and the oil filling pipe 503, the lubricating oil can be injected into the through groove 501 through the oil filling pipe 503, and then evenly sprayed into the interior of the tower crane planetary reducer body 1 through a plurality of through holes 502, so that the gears inside the tower crane planetary reducer body 1 can be flushed. By rotating the gears from the outside of the tower crane planetary reducer body 1, the planetary gears inside the tower crane planetary reducer body 1 can be rotated, so that the planetary gears inside the tower crane planetary reducer body 1 can be fully flushed. The lubricating oil after flushing will be discharged through one of the oil filling pipes 503. After flushing, one of the sealing covers 9 is threadedly connected to one of the oil filling pipes 503.Then, new lubricating oil can be added into the tower crane planetary reducer body 1 from another oil filling pipe 503, and then another sealing cap 9 is threadedly connected to the other oil filling pipe 503, so that the tower crane planetary reducer body 1 can be sealed, and the tower crane planetary reducer body 1 can be quickly reinstalled and used, avoiding the problem that the interior of most existing planetary reducers for tower cranes is inconvenient to flush the interior of the planetary reducer for tower cranes when the lubricating oil is replaced during maintenance, which easily leads to incomplete discharge of waste lubricating oil and poor maintenance effect. In addition, when the planetary reducer for tower cranes needs to be disassembled after installation using many bolts, many bolts still need to be disassembled, and the disassembly of the planetary reducer for tower cranes is time-consuming and laborious. It should be noted that the planetary reducer for tower cranes is an existing published mature technology, and a planetary reduction gear can be installed inside it, which will not be described in detail here.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-input tower crane special reducer, comprising a tower crane planetary reducer body (1), characterized in that: The front and rear sides of the tower crane planetary reducer body (1) are both provided with flushing mechanisms (5), and a fixed ring (3) is provided on the surface of the tower crane planetary reducer body (1); The flushing mechanism (5) comprises a through groove (501), a plurality of through holes (502) and an oil injection pipe (503); the through groove (501) is arranged inside the tower crane planetary reducer body (1); the through holes (502) are arranged on the inner wall of the tower crane planetary reducer body (1); the through groove (501) is connected to the through holes (502); the oil injection pipe (503) is fixedly connected to the tower crane planetary reducer body (1) at one side close to the tower crane planetary reducer body (1); and the oil injection pipe (503) is connected to the through groove (501).

2. A double-input tower crane special reducer according to claim 1, characterized in that: The surface of the oil filling pipe (503) is fixedly sleeved with an anti-slip ring (15), and the number of the anti-slip rings (15) is several and evenly distributed on the surface of the oil filling pipe (503).

3. The double-input tower crane-specific reducer according to claim 1, characterized in that: A sealing cover (9) is provided on opposite sides of the two oil filling pipes (503), and the surface of the sealing cover (9) is threadedly connected to the inner wall of the oil filling pipe (503).

4. A double-input tower crane-specific reducer according to claim 3, characterized in that: A groove (16) is provided inside the sealing cover (9).

5. The double-input tower crane-specific reducer according to claim 1, characterized in that: The surface fixing sleeve of the tower crane planetary reducer body (1) is provided with a limiting ring (2), the surface of the tower crane planetary reducer body (1) is in active contact with the inner wall of the fixing ring (3), and the bottom of the limiting ring (2) is in contact with the top of the fixing ring (3).

6. A double-input tower crane-specific reducer according to claim 5, characterized in that: The top of the fixing ring (3) is fixedly connected with a clamping block (4), the surface of the limiting ring (2) is fixedly connected with a limiting block (8), the limiting block (8) is movably inserted into the inside of the clamping block (4), and the number of the clamping block (4) and the limiting block (8) are both several and are evenly distributed on the top of the fixing ring (3) and the surface of the limiting ring (2).

7. The double-input tower crane-specific reducer according to claim 5, characterized in that: Both sides of the top of the limiting ring (2) are fixedly connected with a shifting block (6), and the surface of the shifting block (6) is fixedly connected with an anti-sliding block (14), and the number of the anti-sliding blocks (14) is several and evenly distributed on the surface of the shifting block (6).

8. The double-input tower crane-specific reducer according to claim 5, characterized in that: A limiting column (7) is arranged on the top of the limiting ring (2), and a limiting hole (11) is provided inside the fixing ring (3). The number of the limiting column (7) and the number of the limiting hole (11) are both four, and the bottom of the limiting column (7) passes through the limiting ring (2) and extends to the inside of the limiting hole (11).

9. A double-input tower crane-specific reducer according to claim 8, characterized in that: A strong magnet (13) is fixedly connected to the bottom of the limiting column (7), the bottom of the strong magnet (13) is magnetically attracted to the bottom of the inner wall of the limiting hole (11), and a pull ring (12) is fixedly connected to the surface of the limiting column (7).

10. The double-input tower crane-specific reducer according to claim 1, characterized in that: The interior of the fixing ring (3) is provided with mounting holes (10), and the number of the mounting holes (10) is several and evenly distributed inside the fixing ring (3).

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