Structure with high allowable radial and axial loads

Abstract

The utility model relates to the technical field of speed reducers, in particular to a structure with high allowable radial and axial loads, which comprises a box body and a flange arranged on the box body, and a solid shaft is arranged between the flange and the box body. The bearing structure is arranged in the flange, and the fixing structure is arranged outside the flange; through the bearing structure arranged in the flange and the fixing structure arranged outside the flange, radial force generated in the process that the solid shaft drives the first gear and the second gear to conduct meshing transmission and axial force borne by the solid shaft can be effectively absorbed and removed; therefore, the radial force and the axial force on the solid shaft are effectively prevented from being transmitted to the box body of the speed reducer, the risk that the box body is prone to breakage due to overlarge stress is further reduced, and the service life of the box body of the speed reducer is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a structure with high allowable radial and axial loads. Background Art

[0002] In many rotating mechanisms, a speed reduction motor is used to reduce speed and increase torque, such as chemical agitation, slewing structures on cranes, etc. Conventional general speed reduction motors can provide torque and speed, but the bearing capacity of the radial load and axial load on the output shaft is limited. If the radial force or axial force directly acts on the box body, it is very easy to cause serious damage such as the rupture of the box body. For example, when the first gear and the second gear installed on the solid shaft driven on the speed reducer case are in meshing transmission, radial force and axial force will be generated on the solid shaft. In such working conditions, users can only add structures such as additional frames or bottom supports to meet the usage requirements, but this method has a high cost.

[0003] In the prior art, as disclosed in CN219529771U, there is a helical planetary speed reducer. A bearing is arranged between the input shaft on the helical sun gear and the planet carrier. Through this bearing, the helical sun gear can be rotatably installed on the planet carrier, ensuring that the end face of the helical sun gear does not rub against the planet carrier during the working process. At the same time, this bearing absorbs the axial force generated by the helical sun gear during the working process. Although this patent absorbs the axial force generated by the helical sun gear during the working process and extends the service life of the speed reducer, it is still difficult to comprehensively reduce the problem that the box body of the speed reducer is prone to cracking due to the radial stress and axial stress received by the output shaft, thus affecting the service life of the speed reducer. Therefore, it is necessary to solve the problem that the service life of the box body of the speed reducer in the prior art is low due to the radial force and axial force of the solid shaft. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide a structure with high allowable radial and axial loads to solve the problem of the low service life of the box body of the speed reducer.

[0005] Based on the above purpose, the present utility model provides a structure with high allowable radial and axial loads, including: a box body, and a flange arranged on the box body. A solid shaft is arranged between the flange and the box body. The output end of the box body drives the solid shaft to rotate in the flange to drive a first gear located on the solid shaft and a second gear meshing with the first gear to rotate; it further includes: a bearing structure arranged inside the flange, and a fixing structure arranged outside the flange. The bearing structure and the fixing structure are used to offset the radial force generated by the first gear on the solid shaft and the axial force of the solid shaft.

[0006] Preferably, the bearing structure includes: an angular contact bearing disposed at one end inside the flange, an inner diameter end of the angular contact bearing is fixedly sleeved around the periphery of the solid shaft, a shaft retaining ring is disposed at the other end of the inner diameter of the angular contact bearing, the shaft retaining ring is sleeved around the periphery of the solid shaft, a hole step is provided at one end inside the flange, an outer diameter end of the angular contact bearing is fixedly installed in the hole step, a through cover is fixedly installed at one end of the flange close to the shaft retaining ring, and an oil cup is provided on the through cover.

[0007] Preferably, a second oil seal is provided between the through cover and the flange, at least two first oil seals are provided between the flange and the box body, and bearing oil retaining rings are provided on both sides of the periphery of the angular contact bearing.

[0008] Preferably, the fixing structure includes: a second connecting fixing plate fixedly installed at one end of the periphery of the flange, and a first adjusting plate and a second adjusting plate attached to both sides of the periphery of the flange. The first adjusting plate and the second adjusting plate are symmetrically arranged. A first connecting fixing plate is fixedly installed on one side of the first adjusting plate and one side of the second adjusting plate. A third connecting fixing plate is welded to one side of the first connecting fixing plate; both the first adjusting plate and the second adjusting plate are arc-shaped structures, and a reserved gap is formed at the adjacent ends of the first adjusting plate and the second adjusting plate.

[0009] Preferably, the size of the reserved gap is greater than 1 mm.

[0010] Preferably, fitting points are formed at the recessed parts on the adjacent sides of the first adjusting plate and the second adjusting plate. The fitting points are fitted to the periphery of the flange. A plurality of through holes adapted to the flange are provided on both the first adjusting plate and the second adjusting plate.

[0011] The beneficial effects of the present utility model: The box body can transmit the torque to the solid shaft, thereby driving the first gear and the second gear to mesh and drive to achieve the effect of speed reduction drive. During the transmission process of the solid shaft, through the bearing structure inside the flange and the fixing structure outside the flange, the radial force generated during the process of the solid shaft driving the first gear and the second gear to mesh and drive and the axial force received by the solid shaft can be effectively absorbed and removed, thereby effectively preventing the radial force and axial force on the solid shaft from being transmitted to the box body of the speed reducer, further reducing the risk of the box body being easily broken due to excessive stress, and further improving the service life of the box body of the speed reducer. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0013] Figure 1 Schematic diagram of the internal sectional structure of the flange of the present utility model;

[0014] Figure 2 Schematic diagram of the external structure of the flange of the present utility model;

[0015] Figure 3 Schematic diagram of the layout structure of the first adjusting plate and the second adjusting plate of the present utility model;

[0016] Figure 4 Schematic diagram of the meshing state structure of the first gear and the second gear of the present utility model.

[0017] The marks in the figure are:

[0018] 1. Flange; 2. Box body; 3. First oil seal; 4. Angular contact bearing; 5. Solid shaft; 6. Shaft retaining ring; 7. Through cover; 8. Second oil seal; 9. Bearing oil baffle ring; 10. Oil cup; 11. First adjusting plate; 12. Second adjusting plate; 13. First connecting fixing plate; 14. Second connecting fixing plate; 15. Third connecting fixing plate; 16. Fitting point; 17. Through hole; 18. First gear; 19. Second gear. Detailed implementation manners

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] As Figure 1 , Figure 2 and Figure 4 shown, a structure with high allowable radial and axial loads includes: a box body 2, the box body 2 is the housing structure of a speed reducer, and a flange 1 provided on the box body 2. A solid shaft 5 is provided between the flange 1 and the box body 2. The output end of the box body 2 drives the solid shaft 5 to rotate within the flange 1 to drive a first gear 18 located on the solid shaft 5 and a second gear 19 meshing with the first gear 18 to rotate; it further includes: a bearing structure provided inside the flange 1, and a fixing structure provided outside the flange 1. The bearing structure and the fixing structure are used to offset the radial force generated by the first gear 18 on the solid shaft 5 and the axial force of the solid shaft 5.

[0021] Among them, the torque can be transmitted to the solid shaft 5 through the box body 2, so as to drive the first gear 18 and the second gear 19 to mesh and drive to achieve the effect of deceleration drive. During the transmission process of the solid shaft 5, through the bearing structure inside the flange 1 and the fixing structure outside the flange 1, the radial force generated during the meshing transmission of the first gear 18 and the second gear 19 by the solid shaft 5 and the axial force received by the solid shaft 5 can be effectively absorbed and removed, thus effectively avoiding the radial force and axial force on the solid shaft 5 from being transmitted to the box body 2 of the speed reducer, further reducing the risk of the box body 2 being prone to cracking due to excessive stress, and further improving the service life of the box body 2 of the speed reducer.

[0022] As Figure 1 shown, the bearing structure includes: an angular contact bearing 4 arranged at one end inside the flange 1. One end of the inner diameter of the angular contact bearing 4 is fixedly sleeved around the solid shaft 5. A shaft retaining ring 6 is arranged at the other end of the inner diameter of the angular contact bearing 4, and the shaft retaining ring 6 is sleeved around the solid shaft 5. A hole step is provided at one end inside the flange 1, and one end of the outer diameter of the angular contact bearing 4 is fixedly installed in the hole step by embedding. A through cover 7 is fixedly installed at one end of the flange 1 close to the shaft retaining ring 6 by bolts, and an oil cup 10 is arranged on the through cover 7.

[0023] Among them, the oil cup 10 provided on the through cover 7 can supplement grease, so that the lubricant can be timely supplemented inside the flange 1. During the transmission process of the solid shaft 5, the angular contact bearing 4 provided can effectively lengthen the span in cooperation with the box body 2 to extend the service life of the angular contact bearing 4. At the same time, the angular contact bearing 4 can bear bidirectional axial forces and can also bear relatively large radial forces, so as to offset and buffer the radial force and axial force generated during the transmission process of the solid shaft 5, and thus the additional complex structure that needs to be added externally by the user can be saved, effectively reducing the maintenance cost of the user.

[0024] Furthermore, at least two first oil seals 3 are arranged between the flange 1 and the box body 2. The first oil seals 3 provided can effectively prevent the lubricating oil inside the box body 2 from entering the flange 1. A second oil seal 8 is arranged between the through cover 7 and the flange 1. The second oil seal 8 can prevent the lubricating oil inside the flange 1 from flowing out. Bearing oil retaining rings 9 are arranged on both sides of the periphery of the angular contact bearing 4. The bearing oil retaining rings 9 provided can ensure that the grease lubrication inside the angular contact bearing 4 will not flow out, further extending the service life of the angular contact bearing 4, and at the same time effectively increasing the sealing performance of the structure.

[0025] As Figure 2As shown in the figure, the fixing structure includes: a second connection fixing plate 14 fixedly installed at one end of the periphery of the flange 1 through bolts, and a first adjusting plate 11 and a second adjusting plate 12 attached to both sides of the periphery of the flange 1. The first adjusting plate 11 and the second adjusting plate 12 are symmetrically arranged. A first connection fixing plate 13 is fixedly installed on one side of the first adjusting plate 11 and one side of the second adjusting plate 12 through bolts. A third connection fixing plate 15 is welded to one side of the first connection fixing plate 13. Both the first adjusting plate 11 and the second adjusting plate 12 are arc-shaped structures, and a reserved gap is formed at the adjacent ends of the first adjusting plate 11 and the second adjusting plate 12.

[0026] Among them, first, the first adjusting plate 11 and the second adjusting plate 12 are installed with the first connection fixing plate 13 through bolts and washers. During installation, it must be ensured that the inner walls of the first adjusting plate 11 and the second adjusting plate 12 can be adjusted to fit the outer wall of the flange 1. Then, the first connection fixing plate 13 and the third connection fixing plate 15 are fixed by welding to enhance the stability of the overall structure. After the first adjusting plate 11 and the second adjusting plate 12 are attached to the outside of the flange 1, a reserved gap must be ensured. Through the formed reserved gap, the positions of the first adjusting plate 11 and the second adjusting plate 12 can be corrected and adjusted according to the meshing angle of the subsequent first gear 18 and the second gear 19, so as to achieve a better fitting force application point. That is, for the radial force generated during the meshing transmission of the first gear 18 and the second gear 19 on the solid shaft 5, considering the meshing angle of the first gear 18 and the second gear 19, the positions of the first adjusting plate 11 and the second adjusting plate 12 can be correspondingly corrected to achieve a better fitting force application point. Subsequently, with the cooperation of the second connection fixing plate 14, the radial force and axial force received by the solid shaft 5 can be effectively transmitted and absorbed from the outside, further reducing the stress effect on the box body 2.

[0027] Furthermore, as Figure 3 shown, the size of the reserved gap is greater than 1 mm. Fitting points 16 are formed at the concave parts on the adjacent sides of the first adjusting plate 11 and the second adjusting plate 12. The fitting points 16 are attached to the periphery of the flange 1. Through the fitting points 16, the fitting position state can be visually displayed, which is convenient for users to adjust and use. A plurality of through holes 17 that can be adapted to the flange 1 are opened on both the first adjusting plate 11 and the second adjusting plate 12. Through the through holes 17, it is convenient to adjust the installation position.

[0028] Those of ordinary skill in the art should understand that: The discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, and they are not provided in detail for the sake of brevity.

Claims

1. A structure with high permissible radial and axial loads, comprising: A housing (2), and a flange (1) arranged on the housing (2), a solid shaft (5) being arranged between the flange (1) and the housing (2), the output end of the housing (2) driving the solid shaft (5) to rotate in the flange (1) so as to drive a first gear (18) located on the solid shaft (5) and a second gear (19) meshing with the first gear (18) to rotate; the housing (2) is characterized in that it also includes: a bearing structure arranged inside the flange (1), and a fixing structure arranged outside the flange (1), the bearing structure and the fixing structure being used to offset the radial force generated by the first gear (18) on the solid shaft (5) and the axial force of the solid shaft (5).

2. A structure with high permissible radial and axial loads according to claim 1, characterized in that: The bearing structure comprises: An angular contact bearing (4) is arranged at one end of the interior of the flange (1), one end of the inner diameter of the angular contact bearing (4) is fixedly sleeved on the outer periphery of a solid shaft (5), and a shaft retaining ring (6) is arranged at the other end of the inner diameter of the angular contact bearing (4), and the shaft retaining ring (6) is sleeved on the outer periphery of the solid shaft (5). A hole step is opened at one end of the interior of the flange (1), and one end of the outer diameter of the angular contact bearing (4) is fixedly installed in the hole step. A transparent cover (7) is fixedly installed at one end of the flange (1) close to the shaft retaining ring (6), and an oil cup (10) is arranged on the transparent cover (7).

3. A structure with high permissible radial and axial loads according to claim 2, characterized in that: A second oil seal (8) is provided between the transparent cover (7) and the flange (1), at least two first oil seals (3) are provided between the flange (1) and the housing (2), and bearing oil retaining rings (9) are provided on both sides of the periphery of the angular contact bearing (4).

4. A structure with high permissible radial and axial loads according to claim 1, characterized in that: The fixed structure comprises: a second connecting and fixing plate (14) fixedly mounted on one end of the outer periphery of the flange (1), and a first adjusting plate (11) and a second adjusting plate (12) attached to two sides of the outer periphery of the flange (1), wherein the first adjusting plate (11) and the second adjusting plate (12) are symmetrically arranged, a first connecting and fixing plate (13) is fixedly mounted on one side of the first adjusting plate (11) and one side of the second adjusting plate (12), and a third connecting and fixing plate (15) is welded to one side of the first connecting and fixing plate (13); The first adjustment plate (11) and the second adjustment plate (12) are both arc-shaped structures, and a reserved gap is formed between adjacent ends of the first adjustment plate (11) and the second adjustment plate (12).

5. A structure with high permissible radial and axial loads according to claim 4, characterized in that: The size of the reserved gap is greater than 1 mm.

6. A structure with high permissible radial and axial loads according to claim 4, characterized in that: A fitting point (16) is formed at the recessed portions on the adjacent sides of the first adjustment plate (11) and the second adjustment plate (12), and the fitting point (16) fits the outer periphery of the flange (1). The first adjustment plate (11) and the second adjustment plate (12) are each provided with a plurality of through holes (17) that can be matched with the flange (1).

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