Cycloidal needle type RT speed reducer with external auxiliary supporting structure

Abstract

The utility model discloses a cycloid needle type RT speed reducer with an external auxiliary supporting structure, which comprises a speed reducer body and a butt joint shaft positioned on one side of the speed reducer body, and a coupler is arranged at the tail end of an output shaft of the speed reducer body and one end, close to each other, of the butt joint shaft. An output shaft of the speed reducer body and the inner side of the top of a butt joint shaft are respectively and fixedly provided with an outer spline capable of being connected in a coupler in a clamped mode, and an auxiliary supporting assembly used in cooperation with the butt joint shaft is arranged on a shell on the inner side of the speed reducer body. The length of the device can be adaptively adjusted according to the length of the butt-joint shaft in butt joint with the output shaft of the speed reducer body, so that the butt-joint shaft is supported and positioned in an auxiliary mode, the situation that the balance between the output shaft of the speed reducer body and a corresponding bearing is damaged due to the fact that the butt-joint shaft slightly shakes when rotating due to the fact that the butt-joint shaft is long can be effectively avoided, and the vibration problem can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of speed reducers, in particular to a cycloid pin type RT speed reducer with an external auxiliary support structure. Background Art

[0002] A speed reducer is commonly used as a speed reduction transmission device between a prime mover and a working machine, and plays a role in matching speeds and transmitting torques between the prime mover and the working machine or the actuator. It is widely used in modern machinery. Among them, the cycloid pin type RT speed reducer is a kind of speed reducer. However, an external auxiliary support structure adapted to its output shaft is not installed on the traditional cycloid pin type RT speed reducer, resulting in the inability to adaptively support and position according to the length of the docking shaft docked with the output shaft. As a result, the docking shaft is likely to have slight shaking due to its long length during rotation, which will further damage the balance between the output shaft of the cycloid pin type RT speed reducer and the corresponding bearing, easily cause vibration problems, and easily damage the bearing, shortening the service life of the bearing.

[0003] In view of the above problems, the utility model is improved. Summary of the Invention

[0004] The utility model provides a cycloid pin type RT speed reducer with an external auxiliary support structure, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is realized as follows: A cycloid pin type RT speed reducer with an external auxiliary support structure includes a speed reducer body and a docking shaft located on one side of the speed reducer body. A coupling is provided at the end of the output shaft of the speed reducer body and one end of the docking shaft close to each other. External splines capable of being clamped in the coupling are fixedly arranged on the inner sides of the output shaft of the speed reducer body and the top of the docking shaft. An auxiliary support assembly adapted to the docking shaft is arranged on the inner shell of the speed reducer body. A vertical plate is fixedly arranged on the inner side of the top of the speed reducer body, and an auxiliary fixing assembly adapted to the auxiliary support assembly is arranged on the vertical plate.

[0006] The utility model relates to the cycloid pin type RT reducer with an external auxiliary support structure as described above. Further: the auxiliary support assembly includes a first sleeve and a second sleeve which are sequentially arranged on the docking shaft in a sliding manner along the left-right direction. Inner splines for inserting external splines are provided at the tops of the inner cavities of the first sleeve and the second sleeve. The second sleeve is clamped on the inner splines on the inner side through the external splines. One side of the first sleeve is uniformly connected with screws through first screw holes. One end of each screw is fixed with a support column capable of penetrating the second sleeve. A locking bolt for limiting the first sleeve is connected to the outer side of the external splines through an auxiliary screw hole. A rotating bearing is arranged on the second sleeve. Inclined plates are fixed to the top of the inner shell of the reducer body and the front and back of the outer ring of the rotating bearing. Reinforcing columns are clamped on the left and right groups of inclined plates. Fixing bolts are connected to the outer sides of each group of inclined plates through second screw holes. Third screw holes for screwing the fixing bolts are provided at both ends of each group of reinforcing columns.

[0007] The utility model relates to the cycloid pin type RT reducer with an external auxiliary support structure as described above. Further: the auxiliary fixing assembly includes a top plate fixed to the outer ring of the rotating bearing and located above the second sleeve. An auxiliary bolt with a cylindrical structure at one end is connected to the top plate through a fourth screw hole. The cylindrical end of the auxiliary bolt is rotatably provided with a positioning plate. A synchronous belt with one end fixed to the positioning plate penetrates through the top of the vertical plate. Side frames are fixed to the front and back of the vertical plate. Mounting shafts are rotatably provided on the sides of the side frames close to each other. Synchronous wheels meshing with the synchronous belt are fixed on the mounting shafts. A ratchet wheel is fixed to one end of the mounting shaft. A pawl meshing with the ratchet wheel is rotatably provided on the front side frame through a rotating shaft. A spring is fixed to the front side frame through a mounting block. One end of the spring is fixed to a pull plate with the top end fixed to the rotating shaft.

[0008] The utility model relates to the cycloid pin type RT reducer with an external auxiliary support structure as described above. Further: a guiding column cooperating with the synchronous belt is rotatably provided at the top of the side frames close to each other. A limiting frame for clamping the synchronous belt is fixed to the left side of the vertical plate. One end of the synchronous belt in contact with the limiting frame is in a vertically downward structure.

[0009] The utility model relates to the cycloid pin type RT reducer with an external auxiliary support structure as described above. Further: a section of the synchronous belt between the vertical plate and the positioning plate is in an inclined structure.

[0010] The utility model relates to the cycloid pin type RT reducer with an external auxiliary support structure as described above. Further: the number of support columns between the first sleeve and the second sleeve is at least six groups.

[0011] The above-mentioned cycloid pin RT reducer with an external auxiliary support structure of the present utility model further: circular placement holes are provided at the tops of the left and right inclined plates close to each other, and both ends of the reinforcement column are clamped in the circular placement holes, and there is a spacing between the second sleeve and the end of the support column away from the screw rod.

[0012] In summary, the beneficial effects of the present utility model are as follows:

[0013] 1. By setting the auxiliary support assembly, the present utility model can quickly form an adjustable auxiliary support and lifting structure, which can adaptively adjust its own length according to the length of the docking shaft docked with the output shaft of the reducer body, so as to perform auxiliary positioning on the docking shaft, effectively avoiding slight shaking of the docking shaft due to its long length during rotation, thereby destroying the balance between the output shaft of the reducer body and the corresponding bearing, and avoiding vibration problems. It can not only ensure the normal operation of the reducer body, but also synchronously extend the service life of the docking bearing.

[0014] 2. By setting the auxiliary fixation assembly, the present utility model can form an auxiliary pulling structure for the rotating bearing, and the entire pulling structure can adaptively adjust according to the position of the rotating bearing, so as to perform lifting and positioning on the entire auxiliary support assembly, effectively avoiding the easy downward drop of the auxiliary support assembly due to excessive extension, and further improving the overall stability of the auxiliary support assembly.

[0015] 3. By setting the guide column, the present utility model can change the direction of the synchronous belt so that the synchronous belt can be stably clamped with the synchronous pulley, and in cooperation with the limit frame, the synchronous belt can be further limited, effectively avoiding the synchronous belt from disengaging from the synchronous pulley and affecting the meshing stability.

[0016] 4. By setting a section of the synchronous belt in an inclined structure, the present utility model can further improve the lifting stability of the auxiliary support assembly, avoiding the easy downward drop of one end of the auxiliary support assembly and affecting the auxiliary support effect on the docking shaft docked with the output shaft of the reducer body.

[0017] 5. By limiting the number of support columns, the present utility model further improves the stability between the first sleeve and the second sleeve, so that when the first sleeve rotates following the docking shaft, it can stably drive the second sleeve to rotate, avoiding the easy breakage due to the small number of support columns.

[0018] 6. By setting the circular placement hole, the present utility model can give a certain clamping space to the reinforcement column for preliminary positioning of the reinforcement column, facilitating the quick positioning of the subsequent fixing bolts. At the same time, the design of the spacing can give a certain movable space to the second sleeve, leaving a margin for the docking of the reinforcement column and avoiding the second sleeve from disengaging from the support column when the reinforcement column is docked. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Side view of the overall structure of the present invention;

[0022] Figure 3 For Figure 2 Enlarged view of the structure at A in

[0023] Figure 4 Partial exploded view of the structure of the auxiliary support assembly of the present invention;

[0024] Figure 5 Partial exploded view of the overall structure of the present invention.

[0025] In the figure: 1, reducer body; 2, docking shaft; 3, coupling; 4, external spline; 5, vertical plate; 6, inclined plate; 7, first sleeve; 8, support pillar; 9, screw; 10, second sleeve; 11, rotating bearing; 12, internal spline; 13, reinforcing column; 14, fixing bolt; 15, circular placement hole; 16, top plate; 17, auxiliary bolt; 18, positioning plate; 19, synchronous belt; 20, side frame; 21, mounting shaft; 22, guide post; 23, synchronous pulley; 24, ratchet; 25, ratchet pawl; 26, pull plate; 27, spring; 28, limit frame; 29, locking bolt. Specific embodiments

[0026] The following will combine the attached Figures 1-5 in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Embodiment

[0027] A cycloid pin RT reducer with an external auxiliary support structure, comprising a reducer body 1 and a docking shaft 2 located on one side of the reducer body 1. A coupling 3 is provided at the end of the output shaft of the reducer body 1 and the end of the docking shaft 2 close to each other. External splines 4 capable of being clamped in the coupling 3 are fixed on the inner sides of the top of the output shaft of the reducer body 1 and the docking shaft 2. An auxiliary support assembly for cooperating with the docking shaft 2 is provided on the inner shell of the reducer body 1. The auxiliary support assembly includes a first sleeve 7 and a second sleeve 10 that are sequentially slidably arranged on the docking shaft 2 in the left-right direction. Inner splines 12 for inserting the external splines 4 are provided at the tops of the inner cavities of the first sleeve 7 and the second sleeve 10. The second sleeve 10 is clamped on the inner splines 12 on the inner side through the external splines 4. One side of the first sleeve 7 is uniformly connected with a screw rod 9 through a first screw hole. One end of the screw rod 9 is fixed with a support column 8 capable of passing through the second sleeve 10. A locking bolt 29 for limiting the first sleeve 7 is threadedly connected to the external splines 4 through an auxiliary screw hole. A rotating bearing 11 is provided on the second sleeve 10. Diagonal plates 6 are fixed on the front and back of the top of the inner shell of the reducer body 1 and the outer ring of the rotating bearing 11. Reinforcing columns 13 are clamped on the left and right groups of diagonal plates 6. Fixing bolts 14 are threadedly connected to the outer sides of each group of diagonal plates 6 through second screw holes. Third screw holes for threading the fixing bolts 14 are provided at both ends of each group of reinforcing columns 13. A vertical plate 5 is fixed on the inner side of the top of the reducer body 1. An auxiliary fixing assembly for cooperating with the auxiliary support assembly is provided on the vertical plate 5.

[0028] Specifically, by utilizing the threaded connection between the first screw hole and the screw rod 9, and in cooperation with the threaded connection between the fixing bolt 14 and the third screw hole, the suitable support column 8 and the reinforcing column 13 can be quickly fixed on the first sleeve 7 and the diagonal plate 6 according to the length of the docking shaft 2. And in cooperation with the threaded connection between the locking bolt 29 and the auxiliary screw hole, the first sleeve 7 can be restricted on the external splines 4 of the docking shaft 2, so that the diagonal plate 6, the reinforcing column 13, the first sleeve 7, the second sleeve 10 and the support column 8 can form a stable support structure, so as to perform auxiliary support positioning on the docking shaft 2 according to its length, and can effectively avoid the slight shaking of the docking shaft 2 during rotation due to its long length, thereby destroying the balance between the output shaft of the reducer body 1 and the corresponding bearing, and can avoid causing vibration problems.

[0029] The auxiliary fixing assembly includes a top plate 16 fixed to the outer ring of the rotating bearing 11 and located above the second sleeve 10. An auxiliary bolt 17 with a cylindrical structure at one end is threadedly connected to the top plate 16 through a fourth screw hole. A positioning plate 18 is rotatably installed at the cylindrical end of the auxiliary bolt 17. A synchronous belt 19 with one end fixed to the positioning plate 18 penetrates through the top of the vertical plate 5. Side frames 20 are fixed to both the front and back of the vertical plate 5. Mounting shafts 21 are rotatably installed on the sides of the side frames 20 close to each other. Synchronous wheels 23 meshing with the synchronous belt 19 are fixed to the mounting shafts 21. A ratchet 24 is fixed to one end of the mounting shaft 21. A pawl 25 meshing with the ratchet 24 is rotatably installed on the front side frame 20 through a rotating shaft. A spring 27 is fixed to the front side frame 20 through a mounting block. A pull plate 26 with one end fixed to the rotating shaft is fixed to one end of the spring 27.

[0030] Specifically, the designs of the ratchet 24, pawl 25 and spring 27 can quickly form a locking structure for the synchronous wheel 23, thereby limiting the moving direction of the synchronous belt 19 and preventing it from moving back. Thus, the entire auxiliary support assembly can be lifted and positioned by the synchronous belt 19 with a self-locking structure, effectively avoiding the auxiliary support assembly from sagging due to excessive extension and further improving the overall stability of the auxiliary support assembly.

[0031] Guide posts 22 used in conjunction with the synchronous belt 19 are rotatably installed at the tops of the side frames 20 close to each other. A limiting frame 28 for clamping the synchronous belt 19 is fixed to the left side of the vertical plate 5. One end of the synchronous belt 19 in contact with the limiting frame 28 is in a vertically downward structure.

[0032] Specifically, the design of the guide posts 22 can change the direction of the synchronous belt 19, facilitating the stable clamping of the synchronous belt 19 with the synchronous wheel 23. At the same time, the design of the limiting frame 28 can limit the vertical end of the synchronous belt 19 to prevent it from moving left and right, further ensuring the stable clamping of the synchronous belt 19 and the synchronous wheel 23.

[0033] A section of the synchronous belt 19 between the vertical plate 5 and the positioning plate 18 is in an inclined structure.

[0034] Specifically, the synchronous belt 19 with an inclined structure can further improve the lifting stability of the auxiliary support assembly, preventing one end of the auxiliary support assembly from sagging and affecting the auxiliary support effect on the docking shaft 2 docked with the output shaft of the reducer body 1.

[0035] The number of struts 8 between the first sleeve 7 and the second sleeve 10 is at least six groups.

[0036] Specifically, the limitation on the number of struts 8 improves the stability between the first sleeve 7 and the second sleeve 10, facilitating the stable driving of the second sleeve 10 to rotate following the first sleeve 7 and preventing the struts 8 from being easily broken during rotation due to a small number of struts 8.

[0037] Circular placement holes 15 are provided at the tops of the left and right sets of inclined plates 6 close to each other. Both ends of the reinforcement column 13 are clamped in the circular placement holes 15, and there is a spacing between the second sleeve 10 and the end of the support column 8 away from the screw 9.

[0038] Specifically, the circular placement hole 15 is designed to provide a certain clamping space for the reinforcement column 13 to preliminarily position the reinforcement column 13, facilitating the rapid positioning of the subsequent fixing bolt 14. At the same time, the design of the spacing provides a certain movable space for the second sleeve 10, leaving a margin for the docking of the reinforcement column 13 to prevent the second sleeve 10 from detaching from the support column 8 when the reinforcement column 13 is docked. The specific usage process is as follows: The user pre-selects the appropriate support column 8 and reinforcement column 13 according to the length of the docking shaft 2. Subsequently, the user threads the screw 9 at one end of the support column 8 onto the first screw hole on the first sleeve 7 to fix the support column 8 on the first sleeve 7. Then, the user inserts the support column 8 through the second sleeve 10. At the same time, the user inserts the first sleeve 7 and the second sleeve 10 onto the docking shaft 2. Subsequently, the user uses the coupling 3 to dock and fix the output shaft of the reducer body 1 with the docking shaft 2. The coupling 3 is a common existing connection device, and its docking principle will not be elaborated here. Then, the user rotates and moves the first sleeve 7 and engages the internal spline 12 thereon with the external spline 4. At this time, the first sleeve 7 contacts the coupling 3. Then, the user threads the locking bolt 29 onto the auxiliary screw hole at the top of the external spline 4 on the docking shaft 2 to limit the position of the first sleeve 7. Then, the user moves the rotating bearing 11 to the right, driving the inclined plate 6 thereon to move to the right by a certain distance synchronously. At this time, the user inserts one end of the appropriate reinforcement column 13 into the circular placement hole 15 on the left inclined plate 6 and threads the fixing bolt 14 onto the third screw hole at one end of the reinforcement column 13 to pre-fix the reinforcement column 13. Then, the user moves the rotating bearing 11 to the left, driving the inclined plate 6 thereon to move to the left and engaging the circular placement hole 15 thereon with the other end of the reinforcement column 13. Then, the user can use the fixing bolt 14 to fix the other end of the reinforcement column 13. At this time, the inclined plate 6, the reinforcement column 13, the first sleeve 7, the second sleeve 10, and the support column 8 can form a stable support structure, and the size of the entire support structure can be adjusted according to the length of the docking shaft 2, thereby supporting and positioning the docking shaft 2, effectively preventing the docking shaft 2 from vibrating slightly due to its length during rotation, which may damage the balance between the output shaft of the reducer body 1 and the corresponding bearing and avoid causing vibration problems. Then, the user threads the auxiliary bolt 17 onto the top plate 16 through the fourth screw hole. At the same time, the user pulls down the synchronous belt 19, which can drive the synchronous pulley 23 to rotate. Moreover, the ratchet 24, the ratchet pawl 25, and the spring 27 can form a locking structure for the mounting shaft 21 and the synchronous pulley 23, thereby limiting the position of the synchronous belt 19 and preventing it from moving back until the section of the synchronous belt 19 between the vertical plate 5 and the top plate 16 is pulled to a tight state, thereby stably pulling and positioning the above support structure and preventing one end from extending too long and being prone to sagging. By using the threaded connection between the first screw hole and the screw 9 and cooperating with the threaded connection between the fixing bolt 14 and the third screw hole,The adapted pillar 8 and the reinforcement pillar 13 can be quickly fixed to the first sleeve 7 and the inclined plate 6 according to the length of the docking shaft 2, and the first sleeve 7 can be restricted to the external spline 4 of the docking shaft 2 by cooperating with the threaded connection of the locking bolt 29 and the auxiliary screw hole, so that the inclined plate 6, the reinforcement pillar 13, the first sleeve 7, the second sleeve 10 and the pillar 8 can form a stable supporting structure, so as to assist and position the docking shaft 2 according to its length, and effectively avoid the docking shaft 2 from shaking slightly due to its length when rotating, thereby damaging the output of the reducer body 1. The balance between the shaft and the corresponding bearing can avoid vibration problems; the design of the ratchet 24, the pawl 25 and the spring 27 can quickly form a locking structure for the synchronous wheel 23, thereby limiting the moving direction of the synchronous belt 19 and preventing it from moving back. The synchronous belt 19 with a self-locking structure can be used to lift and position the entire auxiliary support assembly, which can effectively prevent the auxiliary support assembly from falling due to excessive extension, further improving the overall stability of the auxiliary support assembly; the design of the guide column 22 can change the direction of the synchronous belt 19, making it easier to The synchronous belt 19 can be stably connected with the synchronous wheel 23. At the same time, the design of the limit frame 28 can limit the vertical end of the synchronous belt 19 to prevent it from moving left and right, so as to further ensure the stable connection between the synchronous belt 19 and the synchronous wheel 23; a section of the synchronous belt 19 with an inclined structure can further improve the lifting stability of the auxiliary support component and prevent one end of the auxiliary support component from falling easily, affecting the supporting effect of the docking shaft 2 docked with the output shaft of the reducer body 1; the limitation of the number of pillars 8 improves the gap between the first sleeve 7 and the second sleeve 10 Stability is ensured to stably drive the second sleeve 10 to rotate with the first sleeve 7, preventing the pillars 8 from breaking easily during the rotation due to the small number of pillars 8. The circular placement holes 15 are designed to provide a certain amount of clamping space for the reinforcement pillars 13, allowing for preliminary positioning of the reinforcement pillars 13 and facilitating the rapid positioning of the subsequent fixing bolts 14. At the same time, the spacing is designed to provide a certain amount of movable space for the second sleeve 10, leaving a margin for the docking of the reinforcement pillars 13, preventing the second sleeve 10 from separating from the pillars 8 when the reinforcement pillars 13 are docked.

[0039] It should be noted that the functions to be implemented by each hardware in the present invention are supported by a large number of mature technologies and belong to the existing technology. The essence of the present invention lies in optimizing the combination of existing hardware and its connection methods for specific application scenarios to meet the adaptation needs in specific application scenarios. Solving the problems raised in the background technology does not involve improvements to the internal software of the hardware.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cycloid pin RT reducer with an external auxiliary support structure, comprising a reducer body (1) and a docking shaft (2) located on one side of the reducer body (1), characterized in that: At the end of the output shaft of the speed reducer body (1) and one end of the docking shaft (2) close to each other, a coupling (3) is provided. Outer splines (4) capable of being clamped in the coupling (3) are fixed on the inner sides of the tops of the output shaft of the speed reducer body (1) and the docking shaft (2). An auxiliary supporting component used in cooperation with the docking shaft (2) is arranged on the inner shell of the speed reducer body (1). A vertical plate (5) is fixed on the inner side of the top of the speed reducer body (1), and an auxiliary fixing component used in cooperation with the auxiliary supporting component is arranged on the vertical plate (5).

2. The cycloid pin RT reducer with an external auxiliary support structure according to claim 1, characterized in that: The auxiliary supporting component includes a first sleeve (7) and a second sleeve (10) which are sequentially arranged on the docking shaft (2) in a sliding manner in the left-right direction. Inner splines (12) for inserting the outer spline (4) are formed at the tops of the inner cavities of the first sleeve (7) and the second sleeve (10). The second sleeve (10) is clamped on the inner spline (12) on the inner side through the outer spline (4). One side of the first sleeve (7) is uniformly connected with a screw rod (9) through a first screw hole. One end of the screw rod (9) is fixed with a support column (8) capable of penetrating through the second sleeve (10). A locking bolt (29) for limiting the first sleeve (7) is connected to the outer spline (4) through an auxiliary screw hole. A rotating bearing (11) is arranged on the second sleeve (10). Diagonal plates (6) are fixed on the front and back of the top of the inner shell of the speed reducer body (1) and the outer ring of the rotating bearing (11). Reinforcing columns (13) are clamped on the left and right groups of diagonal plates (6). A fixing bolt (14) is connected to the outer side of each group of diagonal plates (6) through a second screw hole. Third screw holes for threading the fixing bolt (14) are formed at both ends of each group of reinforcing columns (13).

3. The cycloid pin RT reducer with an external auxiliary support structure according to claim 2, characterized in that: The auxiliary fixing component includes a top plate (16) fixed on the outer ring of the rotating bearing (11) and located above the second sleeve (10). An auxiliary bolt (17) with one end in a cylindrical structure is connected to the top plate (16) through a fourth screw hole. A positioning plate (18) is rotatably installed at the cylindrical end of the auxiliary bolt (17). A synchronous belt (19) with one end fixed on the positioning plate (18) penetrates through the top of the vertical plate (5). Side frames (20) are fixed on the front and back of the vertical plate (5). A mounting shaft (21) is rotatably installed on the side of the side frames (20) close to each other. A synchronous pulley (23) meshing with the synchronous belt (19) is fixed on the mounting shaft (21). A ratchet wheel (24) is fixed at one end of the mounting shaft (21). A pawl (25) meshing with the ratchet wheel (24) is rotatably installed on the front side frame (20) through a rotating shaft. A spring (27) is fixed on the front side frame (20) through a mounting block. One end of the spring (27) is fixed with a pull plate (26) with the top fixed on the rotating shaft.

4. The cycloid pin RT reducer with an external auxiliary support structure according to claim 3, characterized in that: The top parts of the side frames (20) close to each other are rotatably provided with guide columns (22) used in cooperation with the synchronous belt (19), a limiting frame (28) used in clamping connection with the synchronous belt (19) is fixed to the left side of the vertical plate (5), and one end of the synchronous belt (19) in contact with the limiting frame (28) is in a vertically downward structure.

5. The cycloid pin RT reducer with an external auxiliary support structure according to claim 3, characterized in that: A section of the synchronous belt (19) located between the vertical plate (5) and the positioning plate (18) is in an inclined structure.

6. The cycloid pin RT reducer with an external auxiliary support structure according to claim 2, wherein: The number of the struts (8) between the first sleeve (7) and the second sleeve (10) is at least six groups.

7. A cycloidal pin RT reducer with an external auxiliary support structure according to claim 2, characterized in that: Circular placing holes (15) are formed in the top parts of the left and right inclined plates (6) close to each other, both ends of the reinforcing column (13) are clamped in the circular placing holes (15), and there is a distance between the second sleeve (10) and the end of the strut (8) far from the screw (9).

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