High-precision speed reducer suitable for heavy-load working condition
By designing the support disc and slewing support in the high-precision reducer to bear loads outside the axial direction, the problem of decreasing accuracy and aggravating wear of the reducer under heavy load conditions is solved, and high-precision output and equipment life are achieved under high load conditions.
Patent Information
- Application Number
- CN202422379815.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The existing high-precision reducers are not suitable under heavy load conditions. The reason is that when the shaft of the reducer is not perpendicular to the horizontal plane, it needs to bear support loads outside the axial rotation direction, resulting in stress deformation of the output shaft, affecting the fit of the internal gear, resulting in a decrease in accuracy and aggravating wear, and shortening the applicable life of the equipment.
A high-precision reducer including a speed reduction mechanism, a slewing support and a load-bearing cover plate is designed. By providing a support disc on the housing and a rotary support is provided on the support disc, the rotary support bears loads outside the axial rotation direction, and protects the output end of the speed reduction assembly from bending and deformation, thereby maintaining high-precision output.
It realizes that the reducer maintains high-precision output under high load conditions, extends the service life of the equipment and reduces internal wear.
Smart Images
Figure CN222992088U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reducers, and particularly relates to a high-precision reducer suitable for heavy-duty working conditions. Background Art
[0002] A speed reducer is a device that obtains a larger output torque by reducing the output speed, and thus is widely used in various industries. With the continuous development of the field of automatic control, the requirement for the action accuracy of equipment is getting higher and higher. As an important part of mechanical transmission, the requirement for the accuracy of the speed reducer is also getting higher and higher. The high-precision speed reducers available on the market achieve high-precision output by machining internal gears with higher precision and more precise assembly tolerances. However, the existing high-precision speed reducers are not applicable under heavy-duty working conditions. The reasons are as follows: when the rotating shaft of the speed reducer is not perpendicular to the horizontal plane, the speed reducer needs to bear the support load other than the axial rotation direction. Under heavy-duty working conditions, this load is large, and there will be a certain amount of stress deformation on the output shaft of the speed reducer. This deformation will greatly affect the fit degree of the internal gears, resulting in a decrease in the accuracy of the speed reducer; and working in a deformed state will exacerbate the internal wear of the speed reducer, further causing a decrease in accuracy and also reducing the service life of the speed reducer. Summary of the Utility Model
[0003] To overcome the deficiencies in the prior art, the utility model provides a high-precision reducer suitable for heavy-duty working conditions.
[0004] To achieve the above object, the technical solution adopted by the utility model is as follows: A high-precision reducer suitable for heavy-duty working conditions, comprising:
[0005] A speed reduction mechanism, including a housing and a speed reduction assembly disposed inside the housing. The speed reduction assembly is provided with an output end and an input end extending from both ends of the housing. The housing is provided with a support disk extending outwardly and peripherally.
[0006] A slewing bearing, including an inner ring and an outer ring. The outer ring is coaxially arranged with the inner ring and rotates relative to each other along the axis. The slewing bearing is coaxially arranged with the speed reduction mechanism and disposed on the support disk. The outer ring is fixedly connected to the support disk, and the output end is located inside the inner ring.
[0007] A load-bearing cover plate, the middle of the load-bearing cover plate is fixedly connected to the output end, and the edge of the load-bearing cover plate is fixedly connected to the inner ring.
[0008] Further, a raised support stop edge is provided on the outer edge of the support disk. The outer ring is located inside the support stop edge, and the outer diameter of the outer ring is adapted to the inner diameter of the support stop edge, so that the outer wall of the outer ring fits the inner wall of the support stop edge.
[0009] Further, the housing includes a front housing and a rear housing, the front housing and the rear housing are combined and connected, the support disk is formed by extending outward from the outer periphery of the rear housing, and the support disk and the rear housing are of an integral structure.
[0010] Further, an input port is provided on the rear housing, the input end passes through the input port, and a bearing and a seal are provided between the input end and the input port, and the seal is located at the rear side of the bearing.
[0011] Further, a rear equipment cavity is formed in the housing, the speed reduction assembly is arranged in the equipment cavity, the rear housing is provided with an injection port penetrating into the equipment cavity, and a detachable plug is provided at the injection port.
[0012] Further, the support disk is provided with a plurality of first mounting holes arranged in a circumferential array around the axis, and one side of the outer ring facing the support disk is provided with a plurality of first screw holes arranged in a circumferential array around the axis. The first mounting holes and the first screw holes correspond one by one. A first bolt is arranged in a first mounting hole, and the first bolt passes through a first mounting hole and is locked to the first screw hole.
[0013] Further, the bearing cover plate is provided with a plurality of second mounting holes arranged in a circumferential array around the axis, and one side of the inner ring facing the bearing cover plate is provided with a plurality of second screw holes arranged in a circumferential array around the axis. The second mounting holes and the second screw holes correspond one by one. A second bolt is arranged in a second mounting hole, and the second bolt passes through a second mounting hole and is locked to the second screw hole.
[0014] Further, a plurality of third mounting holes are provided in the middle of the bearing cover plate, and one side of the output end facing the bearing cover plate is provided with a plurality of third screw holes. The third mounting holes and the third screw holes correspond one by one. A third bolt is arranged in a third mounting hole, and the third bolt passes through a third mounting hole and is locked to the third screw hole.
[0015] As can be seen from the above description of the present invention, compared with the prior art, a high-precision speed reducer suitable for heavy-duty working conditions provided by the present invention has the following advantages:
[0016] A support disk is provided on the housing of the present application, and a slewing bearing is arranged on the support disk. The slewing bearing is used to bear the load other than the axial rotation direction during work, so that the output end of the speed reduction assembly will not undergo bending deformation, which plays a role in protecting the high-precision speed reduction assembly, and further realizes the ability of the speed reducer to maintain high-precision output under high-load conditions, and at the same time enables the equipment to have a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic cross-sectional view of a high-precision speed reducer suitable for heavy-duty working conditions of the present invention.
[0018] Figure 2Schematic diagram of the disassembly of a high-precision reducer suitable for heavy-duty working conditions according to the present utility model.
[0019] Figure 3 Schematic diagram of the structure of a high-precision reducer suitable for heavy-duty working conditions according to the present utility model.
[0020] Figure 4 Schematic diagram of the slewing bearing structure according to the present utility model.
[0021] Figure 5 Schematic diagram of the structure of the rear housing according to the present utility model.
[0022] The markings in the figure correspond to the following: 1 - reduction mechanism, 11 - housing, 111 - front housing, 112 - rear housing, 113 - input port, 114 - bearing, 115 - seal, 116 - injection port, 117 - plug, 12 - reduction assembly, 121 - output end, 1211 - third screw hole, 1212 - third bolt, 122 - input end, 13 - support disc, 131 - support retaining edge, 132 - first mounting hole, 2 - slewing bearing, 21 - inner ring, 211 - second screw hole, 212 - second bolt, 22 - outer ring, 221 - first screw hole, 222 - first bolt, 3 - load-bearing cover plate, 31 - second mounting hole, 32 - third mounting hole. Detailed implementation manners
[0023] The present utility model will be further described below through specific implementation manners.
[0024] Refer to Figures 1 to 5 As shown, a high-precision reducer suitable for heavy-duty working conditions includes a reduction mechanism 1, a slewing bearing 2, and a load-bearing cover plate 3.
[0025] The reduction mechanism 1 includes a housing 11 and a reduction assembly 12 provided inside the housing 11. The reduction assembly 12 includes an output end 121 and an input end 122 extending from both ends of the housing 11. The housing 11 is provided with a support disc 13 extending outwardly towards the periphery. The slewing bearing 2 includes an inner ring 21 and an outer ring 22. The outer ring 22 is coaxially arranged with the inner ring 21 and rotates relative to each other along the axis. The slewing bearing 2 is coaxially arranged with the reduction mechanism 1 and is provided on the support disc 13. The outer ring 22 is fixedly connected to the support disc 13, and the output end 121 is located inside the inner ring 21. The middle of the load-bearing cover plate 3 is fixedly connected to the output end 122, and the edge of the load-bearing cover plate 3 is fixedly connected to the inner ring 22.
[0026] The outer edge of the support disc 13 is provided with a raised support stop edge 131. The outer ring 22 is located within the support stop edge 131, and the outer diameter of the outer ring 22 is adapted to the inner diameter of the support stop edge 131, such that the outer wall of the outer ring 22 is in contact with the inner wall of the support stop edge 131. The housing 11 includes a front housing 111 and a rear housing 112. The front housing 111 and the rear housing 112 are combined and connected. The support disc 13 extends outward from the outer periphery of the rear housing 112, and the support disc 13 and the rear housing 112 are of an integral structure. The rear housing 112 is provided with an input port 113. The input end 122 passes through the input port 113. A bearing 114 and a seal 115 are provided between the input end 122 and the input port 113, and the seal 115 is located at the rear side of the bearing 114. A rear equipment cavity is formed within the housing 11. The reduction assembly 12 is disposed within the equipment cavity. The rear housing 112 is provided with an injection port 116 that penetrates into the equipment cavity. A removable plug 117 is provided at the injection port 116, and lubricant can be injected into the equipment cavity through the injection port 116.
[0027] The support disc 13 is provided with a plurality of first mounting holes 132 arranged in a circumferential array around the axis. One side of the outer ring 22 facing the support disc 13 is provided with a plurality of first screw holes 221 arranged in a circumferential array around the axis. The first mounting holes 132 and the first screw holes 221 correspond to each other one by one. A first bolt 222 is provided within one first mounting hole 132. The first bolt 222 passes through one first mounting hole 132 and is locked to the first screw hole 221. The load-bearing cover plate 3 is provided with a plurality of second mounting holes 31 arranged in a circumferential array around the axis. One side of the inner ring 21 facing the load-bearing cover plate is provided with a plurality of second screw holes 211 arranged in a circumferential array around the axis. The second mounting holes 31 and the second screw holes 211 correspond to each other one by one. A second bolt 212 is provided within one second mounting hole 31. The second bolt 212 passes through one second mounting hole 31 and is locked to the second screw hole 212. The middle of the load-bearing cover plate 3 is provided with a plurality of third mounting holes 32. One side of the output end 121 facing the load-bearing cover plate 3 is provided with a plurality of third screw holes 1211. The third mounting holes 32 and the third screw holes 1211 correspond to each other one by one. A third bolt 1212 is provided within one third mounting hole 32. The third bolt 1212 passes through one third mounting hole 32 and is locked to the third screw hole 1211.
[0028] The working principle of this high-precision reducer suitable for heavy-duty working conditions is as follows:
[0029] The deceleration assembly 12 uses a high-precision planetary gear reducer. Taking the application of this device to a robotic arm as an example, this reducer is arranged at the operating end of the robotic arm, that is, the rear housing 112 is connected to the end of the arm body, and the operating fixture is connected to the load-bearing cover plate 3. Since the support disk 13 and the rear housing 112 are integrally designed, the slewing bearing 2 is installed on the support disk 13 through the outer ring 22, and the load-bearing cover plate 3 is connected to the inner ring 21. Therefore, the load generated by the gravity of the operating fixture and the product it grabs is transmitted to the robotic arm through the slewing bearing 2, that is, the load exerted on the reducer of this application by the gravity of the operating fixture and the product it grabs is borne by the slewing bearing 2. The slewing bearing 2 is a mechanical component specifically designed to support and transmit axial loads, radial loads, and overturning moments. Therefore, it has high reliable stability and can bear high loads. The output end 121 of the deceleration assembly 12 is connected to the support disk 13. The deceleration assembly 12 only needs to output and provide an axial rotation driving force without bearing loads in other directions. Therefore, the output end 121 will not undergo bending deformation, which achieves the effect of protecting the deceleration assembly with high precision. Furthermore, it realizes the ability of the reducer to maintain high-precision output under high-load conditions, and at the same time enables the device to have a longer service life.
[0030] The above is only a specific implementation manner of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modification made to the present utility model using this concept shall fall within the scope of infringement of the protection scope of the present utility model.
Claims
1. A high-precision reducer suitable for heavy-load conditions, characterized in that: include: The speed reduction mechanism comprises a housing and a speed reduction assembly arranged in the housing, wherein the speed reduction assembly is provided with an output end and an input end extending from two ends of the housing, and the housing is provided with a supporting plate extending toward the periphery; A slewing bearing, comprising an inner ring and an outer ring, wherein the outer ring and the inner ring are coaxially arranged and relatively rotate along the axis, the slewing bearing and the reduction mechanism are coaxially arranged on a support disk, the outer ring is tightly connected to the support disk, and the output end is located inside the inner ring; A load-bearing cover plate, wherein the middle portion of the load-bearing cover plate is tightly connected to the output end, and the edge of the load-bearing cover plate is tightly connected to the inner ring.
2. According to claim 1, a high-precision reducer suitable for heavy-load conditions, characterized in that: The outer edge of the support plate is provided with a raised support stop edge, the outer ring is located inside the support stop edge, and the outer diameter of the outer ring is matched with the inner diameter of the support stop edge, so that the outer wall of the outer ring fits the inner wall of the support stop edge.
3. According to claim 1, a high-precision reducer suitable for heavy-load conditions, characterized in that: The shell comprises a front shell and a rear shell, the front shell is combined and connected with the rear shell, the support plate is formed by extending outward from the outer peripheral surface of the rear shell, and the support plate and the rear shell are an integral structure.
4. A high-precision reducer suitable for heavy-load conditions according to claim 3, characterized in that: The rear housing is provided with an input port, the input end passes through the input port, a bearing and a sealing member are provided between the input end and the input port, and the sealing member is located at the rear side of the bearing.
5. According to claim 3, a high-precision reducer suitable for heavy-load conditions, characterized in that: A rear equipment cavity is formed in the shell, the deceleration assembly is arranged in the equipment cavity, the rear shell is provided with an injection port penetrating into the equipment cavity, and a detachable plug is provided at the injection port.
6. The high-precision reducer suitable for heavy-load conditions according to claim 1, characterized in that: The support plate is provided with a plurality of first mounting holes arranged in a circular array around the axis, and a side of the outer ring facing the support plate is provided with a plurality of first screw holes arranged in a circular array around the axis, the first mounting holes correspond to the first screw holes one by one, a first bolt is arranged in a first mounting hole, and the first bolt passes through a first mounting hole and is locked in the first screw hole.
7. The high-precision reducer suitable for heavy-load conditions according to claim 1, characterized in that: The load-bearing cover plate is provided with a plurality of second mounting holes arranged in a circular array around the axis, and a side of the inner ring facing the load-bearing cover plate is provided with a plurality of second screw holes arranged in a circular array around the axis, the second mounting holes correspond to the second screw holes one by one, a second bolt is arranged in a second mounting hole, and the second bolt passes through a second mounting hole and is locked in the second screw hole.
8. The high-precision reducer suitable for heavy-load conditions according to claim 1, characterized in that: A plurality of third mounting holes are provided in the middle of the load-bearing cover plate, and a plurality of third screw holes are provided on a side of the output end facing the load-bearing cover plate. The third mounting holes correspond to the third screw holes one by one, a third bolt is provided in a third mounting hole, and the third bolt passes through a third mounting hole and is locked in the third screw hole.