Harmonic speed reducer with high impact resistance

Abstract

The utility model discloses a harmonic speed reducer with high impact resistance, which relates to the technical field of harmonic speed reducers and comprises a steel wheel, a fixed cover and a protective unit. Clamping teeth on the inner side face of the steel wheel are meshed with clamping teeth on the outer side of the flexible wheel, the flexible wheel is inserted into the steel wheel, the interior of the flexible wheel and the outer side of the wave generator are installed in a matched mode, an installation groove is formed in the outer side of the steel wheel, installation blocks are fixed to the two ends of the right side face of the fixing cover, and the installation blocks are correspondingly inserted into the installation groove. The protection unit comprises a clamping block and a protection shell, according to the harmonic speed reducer with the high impact resistance, the installed fixing cover can prevent foreign matter from entering the steel wheel to cause damage to the structure, and the rotating wheel is rotated to enable the limiting ring to be fixed to the outer side of the external connecting shaft; the external connecting shaft is prevented from vibrating during rotation, so that the damage caused by impact force between the wave generator and the flexible gear is avoided, and the outer side of the flexible gear can be protected by the arranged protective shell.

Description

Technical Field

[0001] The utility model relates to the technical field of harmonic reducers, in particular to a harmonic reducer with strong impact resistance. Background Art

[0002] A harmonic reducer is a gear transmission device that meets the needs of various working machines by reducing the speed and increasing the torque. It is widely used in many industries such as aerospace, navigation, machinery manufacturing, transportation, etc. Harmonic reducers are increasingly widely used in aviation, mining, metallurgy, chemical industry and other industries due to their small size, light weight and large load-bearing capacity. During the use of a harmonic reducer, the external connecting shaft is prone to vibration when it rotates, which makes it easy for the wave generator and the flexible wheel to be damaged by impact force. At the same time, the outer side of the flexible wheel lacks a protective structure, which makes it easy for the flexible wheel to deform when hit by external objects, affecting its subsequent use. For this reason, we propose a harmonic reducer with strong impact resistance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a harmonic reducer with strong impact resistance. The installed fixing cover can prevent foreign matter from entering the interior of the steel wheel and causing damage to the structure. The rotating wheel fixes the limit ring on the outside of the external connecting shaft to prevent the external connecting shaft from vibrating during rotation, causing damage to the wave generator and the flexible wheel due to impact force. The protective shell provided can protect the outer side of the flexible wheel, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a harmonic reducer with strong impact resistance, comprising a steel wheel, a fixed cover and a protective unit;

[0005] Steel wheel: The teeth on the inner side mesh with the teeth on the outer side of the flexible wheel, the flexible wheel is inserted into the inside of the steel wheel, the inside of the flexible wheel is installed in cooperation with the outer side of the wave generator, the outer side of the steel wheel is provided with a mounting groove, both ends of the right side of the fixed cover are fixed with mounting blocks, and the mounting blocks are correspondingly plugged into the mounting grooves;

[0006] Protection unit: comprising a card block and a protection shell, wherein the card block is sleeved on the outside of the flexible wheel, and the two ends of the left side of the protection shell are fixed with protection shells;

[0007] It also includes mounting holes, which are evenly opened on the surfaces of the steel wheel and the fixing cover.

[0008] The external connecting shaft is inserted into the wave generator, and the wave generator drives the outer teeth of the flexible wheel to engage with the inner teeth of the steel wheel, which can effectively reduce the speed. The mounting block is inserted into the mounting groove to fix the fixed cover, which can prevent foreign objects from entering the steel wheel and causing structural damage. The installed protective shell can protect the outer side of the flexible wheel to prevent the outer side of the flexible wheel from being damaged by external objects.

[0009] Furthermore, the protection unit also includes a rotating wheel, a connecting frame, a bidirectional screw, a bracket and a limiting ring. The connecting frame is fixed to the left side of the fixed cover, and the front side of the connecting frame is rotatably connected to the bidirectional screw. The top of the bidirectional screw is fixed with a rotating wheel. The threads at both ends of the bidirectional screw are opposite. There are two limiting rings and brackets are fixed on the outside. The screw holes on the surface of the bracket are connected to the outer threads of the bidirectional screw. Rotating the rotating wheel drives the bidirectional screw to rotate, thereby driving the two limiting rings to clamp and limit the external connecting shaft to increase the stability of the external connecting shaft during rotation, thereby reducing the influence of the vibration generated during the rotation of the external connecting shaft on the wave generator and the flexible wheel.

[0010] Furthermore, the protective unit also includes a card frame and a fixed frame, there are two fixed frames and they are respectively installed at the two ends of the right side of the steel wheel, the interior of the fixed frame is plugged into the card block, the card frame is installed inside the fixed frame, the card frame is carded with the card slot in the middle of the card block, the interior of the fixed frame is carded with the card block, and the card frame is inserted into the card slot in the middle of the card block to increase the stability of the protective shell while facilitating subsequent disassembly.

[0011] Furthermore, the protection unit also includes a limit rod, which is fixed on the rear side of the connecting frame and is slidably connected to a slide groove on the surface of the bracket to increase the stability of the movement and adjustment of the limit ring.

[0012] Furthermore, it also includes an elastic protrusion and a fixing hole, wherein the elastic protrusion is fixed inside the mounting groove, and the fixing hole is opened on the surface of the mounting block, and the elastic protrusion is correspondingly engaged with the fixing hole to increase the stability of the installation of the fixed cover.

[0013] Furthermore, it also includes a through hole and a rubber ring, wherein the through hole is opened in the middle of the fixed cover, and the rubber ring is sleeved on the outer side of the protective shell. The through hole is engaged with the left end of the wave generator to increase the stability of the wave generator's rotation, and the sleeved rubber ring can buffer the impact on the protective shell.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the harmonic reducer with strong impact resistance has the following advantages:

[0015] 1. Insert the external connecting shaft into the wave generator. The wave generator drives the outer teeth of the flexible wheel to engage with the teeth inside the steel wheel, which can effectively reduce the speed. The mounting block is inserted into the mounting groove to fix the fixed cover, which can prevent foreign objects from entering the steel wheel and causing structural damage. The installed protective shell can protect the outer side of the flexible wheel to prevent the outer side of the flexible wheel from being damaged by external objects.

[0016] 2. The bidirectional lead screw is driven to rotate by rotating the rotating wheel, thereby driving the two limit rings to clamp and limit the external connecting shaft, so as to increase the stability of the external connecting shaft during rotation, thereby reducing the influence of the vibration generated by the rotation of the external connecting shaft on the wave generator and the flexible wheel.

[0017] 3. The through hole is used to fit the left end of the wave generator to increase the stability of the wave generator's rotation, and the sleeved rubber ring can buffer the impact on the protective shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the protection unit of the utility model;

[0020] Figure 3 It is a schematic diagram of the internal structure of the steel wheel of the utility model.

[0021] In the figure: 1 steel wheel, 2 protection unit, 21 clamping block, 22 protection shell, 23 rotating wheel, 24 connecting frame, 25 bidirectional screw, 26 bracket, 27 limit ring, 28 clamping frame, 29 fixing frame, 210 limit rod, 3 flexible wheel, 4 wave generator, 5 mounting groove, 6 fixing cover, 7 mounting block, 8 elastic protrusion, 9 fixing hole, 10 through hole, 11 rubber ring, 12 mounting hole. 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 1-3 ,This embodiment provides a technical solution: a harmonic reducer with strong impact resistance, comprising a steel wheel 1, a fixed cover 6 and a protective unit 2;

[0024] Steel wheel 1: The teeth on the inner side mesh with the teeth on the outer side of the flexible wheel 3, the flexible wheel 3 is inserted into the inside of the steel wheel 1, the inside of the flexible wheel 3 is installed in coordination with the outer side of the wave generator 4, the outer side of the steel wheel 1 is provided with a mounting groove 5, and both ends of the right side of the fixing cover 6 are fixed with mounting blocks 7, and the mounting blocks 7 are correspondingly plugged into the mounting grooves 5;

[0025] The protection unit 2: comprises a block 21 and a protection shell 22, the block 21 is sleeved on the outer side of the flexible wheel 3, and the protection shell 22 is fixed at both ends of the left side of the protection shell 22. The protection unit 2 also comprises a rotating wheel 23, a connecting frame 24, a bidirectional lead screw 25, a bracket 26 and a limiting ring 27. The connecting frame 24 is fixed on the left side of the fixed cover 6, and the front side of the connecting frame 24 is rotatably connected with the bidirectional lead screw 25, and the top of the bidirectional lead screw 25 is fixed with a rotating wheel 23. The threads at both ends of the bidirectional lead screw 25 are opposite, and there are two limiting rings 27 and brackets 26 are fixed on the outside. The screw holes on the surface of the bracket 26 are connected to the outer side of the bidirectional lead screw 25. Rotating the rotating wheel 23 drives the bidirectional lead screw 25 to rotate, thereby driving the two limiting rings 27 to clamp and limit the external connecting shaft to increase the stability of the external connecting shaft during rotation, thereby reducing the external connecting shaft. The vibration generated during rotation affects the wave generator 4 and the flexible wheel 3. The protection unit 2 also includes a bracket 28 and a fixed bracket 29. There are two fixed brackets 29 and they are respectively installed at the two ends of the right side of the steel wheel 1. The interior of the fixed bracket 29 is plugged into the block 21. The bracket 28 is installed inside the fixed bracket 29. The bracket 28 is plugged into the slot in the middle of the block 21. The interior of the fixed bracket 29 is plugged into the block 21, and the bracket 28 is inserted into the slot in the middle of the block 21 to increase the stability of the protective shell 22 while facilitating subsequent disassembly. The protection unit 2 also includes a limit rod 210, which is fixed to the rear side of the connecting frame 24. The limit rod 210 is slidably connected to the slide groove on the surface of the bracket 26. The limit rod 210 is slidably connected to the slide groove on the surface of the bracket 26 to increase the stability of the movement adjustment of the limit ring 27.

[0026] Among them, it also includes mounting holes 12, which are evenly opened on the surfaces of the steel wheel 1 and the fixed cover 6. The external connecting shaft is inserted into the wave generator 4, and the wave generator 4 drives the outer teeth of the flexible wheel 3 to engage with the teeth inside the steel wheel 1, which can effectively play a role in deceleration. The mounting block 7 is inserted into the mounting groove 5 to fix the fixed cover 6, which can prevent foreign matter from entering the steel wheel 1 and causing damage to the structure. The installed protective shell 22 can protect the outer side of the flexible wheel 3 to prevent the outer side of the flexible wheel 3 from being damaged by external objects. It includes an elastic protrusion 8 and a fixing hole 9. The elastic protrusion 8 is fixed inside the mounting groove 5. The fixing hole 9 is opened on the surface of the mounting block 7. The elastic protrusion 8 is correspondingly engaged with the fixing hole 9 to increase the stability of the installation of the fixing cover 6. It also includes a through hole 10 and a rubber ring 11. The through hole 10 is opened in the middle of the fixing cover 6. The rubber ring 11 is sleeved on the outer side of the protective shell 22. The through hole 10 is engaged with the left end of the wave generator 4 to increase the rotation stability of the wave generator 4, and the sleeved rubber ring 11 can buffer the impact on the protective shell 22.

[0027] The working principle of a harmonic reducer with strong impact resistance provided by the utility model is as follows: first, the flexible wheel 3 is installed inside the steel wheel 1, the wave generator 4 is installed inside the flexible wheel 3, the mounting block 7 is inserted into the inside of the mounting groove 5, and the elastic protrusion 8 is inserted into the fixing hole 9 to fix the fixing cover 6, so as to prevent foreign matter from entering the steel wheel 1 and causing damage to the structure. The through hole 10 in the middle of the fixing cover 6 is engaged with the left end of the wave generator 4 to increase the rotation stability of the wave generator 4, and the axial hole in the middle of the wave generator 4 is correspondingly plugged with the external connecting shaft. The wave generator 4 drives the outer teeth of the flexible wheel 3 to mesh with the teeth inside the steel wheel 1, which can effectively play a role in deceleration, and the rotating wheel 23 is rotated. The bidirectional lead screw 25 is driven to rotate, thereby driving the two limit rings 27 to clamp and limit the external connecting shaft to increase the stability of the external connecting shaft during rotation, thereby reducing the impact of the vibration generated by the rotation of the external connecting shaft on the wave generator 4 and the flexible wheel 3. Then, the block 21 on the left side of the protective shell 22 is inserted into the interior of the fixing frame 29, and the bracket 28 is inserted into the slot in the middle of the block 21 to increase the stability of the protective shell 22 while facilitating subsequent disassembly. The installed protective shell 22 can protect the outer side of the flexible wheel 3 to prevent the outer side of the flexible wheel 3 from being damaged by external objects, and the sleeved rubber ring 11 can buffer the impact on the protective shell 22.

[0028] 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. A harmonic reducer with strong impact resistance, characterized in that: It comprises a steel wheel (1), a fixed cover (6) and a protective unit (2); Steel wheel (1): the latching teeth on the inner side mesh with the latching teeth on the outer side of the flexible wheel (3), the flexible wheel (3) is inserted into the interior of the steel wheel (1), the interior of the flexible wheel (3) is matched with the outer side of the wave generator (4), the outer side of the steel wheel (1) is provided with a mounting groove (5), and both ends of the right side of the fixing cover (6) are fixed with mounting blocks (7), and the mounting blocks (7) are correspondingly plugged into the mounting grooves (5); The protection unit (2) comprises a clamping block (21) and a protection shell (22), wherein the clamping block (21) is sleeved on the outer side of the flexible wheel (3), and the protection shell (22) is fixed to both ends of the left side of the protection shell (22); It also includes mounting holes (12), and the mounting holes (12) are evenly opened on the surfaces of the steel wheel (1) and the fixing cover (6).

2. The harmonic reducer with strong impact resistance according to claim 1, characterized in that: The protection unit (2) further comprises a rotating wheel (23), a connecting frame (24), a bidirectional lead screw (25), a bracket (26) and a limiting ring (27); the connecting frame (24) is fixed on the left side of the fixing cover (6); the front side of the connecting frame (24) is rotatably connected to the bidirectional lead screw (25); the top end of the bidirectional lead screw (25) is fixed with a rotating wheel (23); the threads at both ends of the bidirectional lead screw (25) are opposite; there are two limiting rings (27) and the bracket (26) is fixed on the outer side of each; the screw hole on the surface of the bracket (26) is connected to the outer thread of the bidirectional lead screw (25).

3. The harmonic reducer with strong impact resistance according to claim 1, characterized in that: The protection unit (2) further comprises a card frame (28) and a fixed frame (29), wherein the fixed frames (29) are two and are respectively mounted at two ends of the right side of the steel wheel (1), the interior of the fixed frame (29) is correspondingly plugged into the card block (21), the card frame (28) is mounted inside the fixed frame (29), and the card frame (28) is card-engaged with a card slot in the middle of the card block (21).

4. The harmonic reducer with strong impact resistance according to claim 2, characterized in that: The protection unit (2) further comprises a limiting rod (210), wherein the limiting rod (210) is fixed to the rear side inside the connecting frame (24), and the limiting rod (210) is slidably connected to a sliding groove on the surface of the bracket (26).

5. The harmonic reducer with strong impact resistance according to claim 1, characterized in that: It also comprises an elastic protrusion (8) and a fixing hole (9), wherein the elastic protrusion (8) is fixed inside the mounting groove (5), and the fixing hole (9) is opened on the surface of the mounting block (7).

6. The harmonic reducer with strong impact resistance according to claim 1, characterized in that: It also comprises a through hole (10) and a rubber ring (11), wherein the through hole (10) is opened in the middle of the fixed cover (6), and the rubber ring (11) is sleeved on the outer side of the protective shell (22).

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