Automatic filtering circulating lubricating device of harmonic speed reducer

Abstract

The utility model discloses an automatic filtering circulating lubricating device of a harmonic speed reducer, which relates to the technical field of harmonic speed reducers and comprises a wave generator and a collecting component. The surface of the wave generator is sleeved with a flexible gear, the surface of the flexible gear is sleeved with a rigid gear, and the rigid gear is meshed with the flexible gear; the collecting assembly comprises a fixing ring, a magnetic ring and an inclined slag discharging groove, the fixing ring is arranged at the right end of the wave generator and located in the flexible gear, an annular connecting groove is formed in the left end of the circumferential face of the fixing ring, and the magnetic ring is fixed in the annular connecting groove; two corresponding inclined slag discharging grooves are formed in the surface of the wave generator, a lubricating assembly is installed at the right end of the circumferential face of the fixing ring, chippings are collected by arranging a collecting assembly, and the lubricating assembly comprises an annular storage groove, a guide ring and an inclined flow guide pipe and can collect the chippings generated by abrasion; meanwhile, lubricating grease can be automatically smeared.

Description

Technical Field

[0001] The utility model relates to the technical field of harmonic reducers, in particular to an automatic filtering circulating lubrication device for harmonic reducers. Background Art

[0002] There are many types of reducers with different models. Reducers of different models and specifications have different application fields. Among them, harmonic reducer is a new type of reducer developed based on the transmission principle of using controllable elastic deformation of flexible elements to transmit motion and power. With the rapid development of industrial automation technology, harmonic reducers are increasingly used in intelligent occasions, and force control is necessary for most intelligent occasions. Torque sensor is a necessary sensor device to achieve force control. Harmonic reducer, as the torque output component of the intelligent module, can reflect the changes in the output force and bearing capacity of the intelligent module in real time and accurately.

[0003] The existing harmonic reducer mainly includes three basic components: a wave generator, a flexible wheel and a rigid wheel. The harmonic reducer is a gear transmission device that transmits motion and power by assembling a flexible bearing on a wave generator to make the flexible gear produce controllable elastic deformation and meshing with the rigid gear. Since the harmonic reducer has the advantages of large transmission ratio, high load-bearing capacity, high transmission accuracy, high transmission efficiency, small size and light weight, it is widely used in the collaborative robot industry.

[0004] In the prior art, most harmonic reducers apply lubricating paste directly on the wave generator of the harmonic reducer. When the harmonic reducer is in use, the wave generator rotates at a high speed at the lower end to generate heat, causing the lubricating paste to melt into a liquid state and play a lubricating role inside the harmonic reducer. However, after multiple uses, the lubricating paste is consumed more, and the harmonic reducer needs to be disassembled and the lubricating paste is added. After the addition is completed, the harmonic reducer is reassembled. The disassembly of the harmonic reducer is relatively cumbersome, and when the harmonic reducer is in use, waste chips generated due to wear will enter the lubricating paste, thereby reducing the lubricating effect of the lubricating paste. For this reason, we propose an automatic filtering circulating lubrication device for a harmonic reducer. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide an automatic filtering circulating lubrication device for a harmonic reducer, which can collect debris generated by wear and can automatically apply lubricating paste, and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic filtering circulating lubrication device for a harmonic reducer, comprising a wave generator and a collecting assembly;

[0007] Wave generator: a flexible wheel is sleeved on the surface, a rigid wheel is sleeved on the surface of the flexible wheel, and the rigid wheel is meshed with the flexible wheel;

[0008] Collection component: includes a fixed ring, a magnetic ring and an oblique slag discharge groove. The right end of the wave generator is provided with a fixed ring, and the fixed ring is located inside the flexible wheel. The left end of the circumferential surface of the fixed ring is provided with an annular connecting groove, and a magnetic ring is fixed inside the annular connecting groove. The surface of the wave generator is provided with two corresponding oblique slag discharge grooves. The right end of the circumferential surface of the fixed ring is installed with a lubrication component. The debris is collected by setting the collection component.

[0009] Furthermore, the lubrication assembly includes an annular storage groove, a guide ring and an oblique guide pipe. An annular storage groove is opened at the right end inside the fixed ring, a guide ring is fixed inside the annular storage groove, and evenly distributed discharge ports are opened on the circumferential surface of the fixed ring. An oblique guide pipe is fixed inside the discharge port. The left ends of all the oblique guide pipes are located in the gap between the wave generator and the flexible wheel. The wave generator is lubricated by setting the lubrication assembly.

[0010] Furthermore, a material injection port is provided at the right end of the fixing ring, and a sealing plug is connected to the internal thread of the material injection port, so that the annular storage groove is sealed by providing the sealing plug.

[0011] Furthermore, an internal threaded tube is fixed inside the fixing ring, an external threaded tube is fixed to the right end of the wave generator, the external threaded tube is threadedly connected to the inside of the internal threaded tube, and the fixing ring is connected to the wave generator by arranging the external threaded tube and the internal threaded tube.

[0012] Furthermore, a rigid heat-conducting ring is fixed on the circumferential surface of the fixed ring, a flexible heat-conducting ring is rotatably connected to the circumferential surface of the rigid heat-conducting ring, the flexible heat-conducting ring is fitted to the inner wall of the flexible wheel, and heat conduction is performed by arranging the rigid heat-conducting ring and the flexible heat-conducting ring.

[0013] Furthermore, two corresponding heat-conducting frames are fixed on the circumferential surface of the fixed ring, and the heat-conducting frames are rotatably connected with heat-conducting wheels inside. Both heat-conducting wheels are in contact with the inner wall of the flexible wheel, and further heat conduction is achieved by arranging the heat-conducting frames and heat-conducting wheels.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the automatic filtering circulation lubrication device of the harmonic reducer has the following advantages:

[0015] 1. By setting up the collection component, the debris generated by the friction between the surface of the wave generator and the inner wall of the flexible wheel during use will be collected by the two oblique slag discharge grooves, and the collected debris will fall to the right and downward along the two oblique slag discharge grooves onto the surface of the magnetic ring. In this case, the magnetic ring will absorb the debris, and after absorption, these debris can be prevented from contaminating the lubricating oil;

[0016] 2. By setting up the lubrication component, the heat generated inside the flexible wheel during use will heat the lubricating paste inside the fixed ring, and the lubricating paste will melt after heating. The melted lubricating liquid will flow into the gap between the wave generator and the flexible wheel through the evenly distributed oblique guide pipes under the action of centrifugal force. In this case, the wave generator can be lubricated without manual application, which greatly improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0018] Figure 2 It is a front side sectional view of the utility model;

[0019] Figure 3 This is an enlarged view of point A of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the oblique slag discharge chute of the utility model.

[0021] In the figure: 1 wave generator, 2 flexible wheel, 3 rigid wheel, 4 collecting assembly, 41 fixing ring, 42 magnetic ring, 43 oblique slag discharge groove, 5 lubrication assembly, 51 annular storage groove, 52 guide ring, 53 oblique flow guide pipe, 6 sealing plug, 7 external threaded pipe, 8 internal threaded pipe, 9 rigid heat conductive ring, 10 flexible heat conductive ring, 11 heat conductive frame, 12 heat conductive wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , This embodiment provides a technical solution: an automatic filtering circulating lubrication device for a harmonic reducer, comprising a wave generator 1 and a collecting assembly 4;

[0024] Wave generator 1: a flexible wheel 2 is sleeved on the surface, a rigid wheel 3 is sleeved on the surface of the flexible wheel 2, and the rigid wheel 3 is meshed with the flexible wheel 2;

[0025] The collecting component 4 comprises a fixing ring 41, a magnetic ring 42 and an oblique slag discharge groove 43. The right end of the wave generator 1 is provided with a fixing ring 41, which is located inside the flexible wheel 2. An annular connecting groove is provided at the left end of the circumferential surface of the fixing ring 41, and a magnetic ring 42 is fixed inside the annular connecting groove. Two corresponding oblique slag discharge grooves 43 are provided on the surface of the wave generator 1. A lubrication component 5 is installed at the right end of the circumferential surface of the fixing ring 41. The lubrication component 5 comprises an annular storage groove 51, a guide ring 52 and an oblique flow guide pipe 53. An annular storage groove 51 is provided at the right end inside the fixing ring 41, and a guide ring 52 is fixed inside the annular storage groove 51. The circumferential surface of the fixing ring 41 is provided with evenly distributed discharge ports, and oblique flow guide pipes 53 are fixed inside the discharge ports. The left ends of all oblique flow guide pipes 53 are located at the gap between the wave generator 1 and the flexible wheel 2. The wave generator 1 is lubricated by providing the lubrication component 5, and the debris is collected by providing the collecting component 4.

[0026] The right end of the fixing ring 41 is provided with a material injection port, and the inner thread of the material injection port is connected with a sealing plug 6 , and the annular storage groove 51 is sealed by setting the sealing plug 6 .

[0027] Among them: an internal threaded tube 8 is fixed inside the fixing ring 41, an external threaded tube 7 is fixed at the right end of the wave generator 1, the external threaded tube 7 is threadedly connected to the inside of the internal threaded tube 8, and the fixing ring 41 is connected to the wave generator 1 by setting the external threaded tube 7 and the internal threaded tube 8.

[0028] Wherein: a rigid heat-conducting ring 9 is fixed on the circumferential surface of the fixed ring 41, a flexible heat-conducting ring 10 is rotatably connected to the circumferential surface of the rigid heat-conducting ring 9, the flexible heat-conducting ring 10 is in contact with the inner wall of the flexible wheel 2, and heat conduction is performed by setting the rigid heat-conducting ring 9 and the flexible heat-conducting ring 10.

[0029] Two corresponding heat-conducting frames 11 are fixed on the circumferential surface of the fixed ring 41, and the heat-conducting frames 11 are rotatably connected with heat-conducting wheels 12 inside. Both heat-conducting wheels 21 are in contact with the inner wall of the flexible wheel 2, and further heat conduction is achieved by setting the heat-conducting frames 11 and the heat-conducting wheels 12.

[0030] The working principle of the automatic filtering circulating lubrication device of the harmonic reducer provided by the utility model is as follows: first, the fixing ring 41 is removed, and then the sealing plug 6 is removed. After the sealing plug 6 is removed, the lubricating paste is injected into the inside of the annular storage groove 51. During the rotation of the wave generator 1, the rigid heat-conducting ring 9, the flexible heat-conducting ring 10, the heat-conducting frame 11 and the heat-conducting wheel 12 will guide the heat generated by the rotation to the fixing ring 41. In this case, the lubricating paste inside the fixing ring 41 can be heated, and the lubricating paste will be melted after heating. The melted lubricating liquid will be in the separation Under the action of centrifugal force, the oil flows into the gap between the wave generator 1 and the flexible wheel 2 through the evenly distributed oblique flow guide pipe 53. In this case, the wave generator 1 can be lubricated without manual application, which greatly improves the efficiency. During the rotation of the wave generator 1, the debris generated by the friction between the wave generator 1 and the inner wall of the flexible wheel 2 will be collected by the two oblique slag discharge grooves 43. The collected debris will fall to the right and downward along the two oblique slag discharge grooves 43 onto the surface of the magnetic ring 42. In this case, the magnetic ring 42 will adsorb the debris, and after adsorption, the debris can be prevented from contaminating the lubricating oil.

[0031] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic filtering circulating lubrication device for a harmonic reducer, characterized in that: It comprises a wave generator (1) and a collecting assembly (4); A wave generator (1) has a flexible wheel (2) sleeved on its surface, a rigid wheel (3) sleeved on the surface of the flexible wheel (2), and the rigid wheel (3) meshes with the flexible wheel (2); The collecting assembly (4) comprises a fixing ring (41), a magnetic ring (42) and an oblique slag discharge groove (43). The fixing ring (41) is arranged at the right end of the wave generator (1). The fixing ring (41) is located inside the flexible wheel (2). An annular connecting groove is provided at the left end of the circumferential surface of the fixing ring (41). The magnetic ring (42) is fixed inside the annular connecting groove. Two corresponding oblique slag discharge grooves (43) are provided on the surface of the wave generator (1). A lubrication assembly (5) is installed at the right end of the circumferential surface of the fixing ring (41).

2. The automatic filtering circulating lubrication device for a harmonic reducer according to claim 1 is characterized in that: The lubrication assembly (5) comprises an annular storage groove (51), a guide ring (52) and an oblique flow guide pipe (53); the right end of the interior of the fixed ring (41) is provided with an annular storage groove (51); the interior of the annular storage groove (51) is fixed with a guide ring (52); the circumferential surface of the fixed ring (41) is provided with evenly distributed discharge ports; the interior of the discharge port is fixed with an oblique flow guide pipe (53); the left ends of all the oblique flow guide pipes (53) are located at the gap between the wave generator (1) and the flexible wheel (2).

3. The automatic filtering circulating lubrication device for a harmonic reducer according to claim 1 is characterized in that: The right end of the fixing ring (41) is provided with an injection port, and the internal thread of the injection port is connected with a sealing plug (6).

4. The automatic filtering circulating lubrication device for a harmonic reducer according to claim 1 is characterized in that: An internal threaded tube (8) is fixed inside the fixing ring (41), an external threaded tube (7) is fixed at the right end of the wave generator (1), and the external threaded tube (7) is threadedly connected to the inside of the internal threaded tube (8).

5. The automatic filtering circulating lubrication device for a harmonic reducer according to claim 1 is characterized in that: A rigid heat-conducting ring (9) is fixed on the circumferential surface of the fixed ring (41), a flexible heat-conducting ring (10) is rotatably connected to the circumferential surface of the rigid heat-conducting ring (9), and the flexible heat-conducting ring (10) is in contact with the inner wall of the flexible wheel (2).

6. The automatic filtering circulating lubrication device for a harmonic reducer according to claim 1 is characterized in that: Two corresponding heat-conducting frames (11) are fixed on the circumferential surface of the fixed ring (41), and the heat-conducting frames (11) are rotatably connected to heat-conducting wheels (12) inside, and the two heat-conducting wheels (12) are both in contact with the inner wall of the flexible wheel (2).

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