Speed reducer for industrial robot

Abstract

The utility model relates to the field of speed reducers, and discloses a speed reducer for an industrial robot, which comprises a base, the periphery of the upper end face of the base is in threaded connection with a top cover through fixing bolts, the center position of the upper end face of the top cover is provided with a sight hole structure, and one side of the upper end face of the base is rotatably provided with a first speed reduction structure. A first speed reduction structure is rotatably arranged on one side of the upper end face of the base and comprises a first connecting shaft, a second speed reduction structure is rotatably arranged on the other side of the upper end face of the base and comprises a second connecting shaft, and a third speed reduction structure is rotatably arranged in the center of the upper end face of the base and comprises a third connecting shaft. The three connecting shafts are arranged, the gears are installed on the shafts, the speed reduction purpose is achieved through meshing of the gears, the speed reduction purpose can be achieved more efficiently through connection of the multiple shafts and the multiple gears, the speed reduction ratio is extremely high, operation is more stable, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of reducers, in particular to a reducer for an industrial robot. Background Art

[0002] The application scope of reducers in the current mechanism for transmitting power and motion is quite wide, and its traces can be seen in almost all kinds of mechanical transmission systems, from ships, cars, locomotives, heavy machinery used in construction, processing machinery and automated production equipment used in the machinery industry, to daily electric clocks, etc. Its application ranges from large power transmission to small loads and precise angle transmission. In industrial applications, reducers have the functions of reducing speed and increasing torque, so they are widely used in speed and torque conversion equipment.

[0003] Most of the existing reducers are one-piece reducers with low transmission efficiency and no oil absorption and oil discharge functions. Lubrication of the gears can only be done manually, and the upper seat must be opened to lubricate the internal gears, which is extremely inconvenient.

[0004] Therefore, the utility model provides a speed reducer for an industrial robot to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a speed reducer for an industrial robot, which has an extremely high speed reduction ratio, runs more smoothly and prolongs the service life of the device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reducer for an industrial robot, comprising a base, a top cover is threadedly connected around the upper end surface of the base by fixing bolts, a viewing hole structure is provided at the center of the upper end surface of the top cover, a first reduction structure is rotatably provided on one side of the upper end surface of the base, the first reduction structure includes a first connecting shaft, a second reduction structure is rotatably provided on the other side of the upper end surface of the base, the second reduction structure includes a second connecting shaft, a third reduction structure is rotatably provided at the center of the upper end surface of the base, the third reduction structure includes a third connecting shaft, an oil drain structure is provided at the lower position of the other side of the base, the oil drain structure includes an oil drain hole, an oil injection device is provided at the edge of the other side of the base near the oil drain structure, and the oil injection device includes an oil suction pump;

[0007] Through the above technical solution, the base enables the device to be installed stably, the top cover seals the upper end surface of the base, the viewing hole structure can observe the internal situation of the device, the first connecting shaft is used to install other parts of the first reduction structure, the second connecting shaft is used to install other parts of the second reduction structure, the third connecting shaft is used to install other parts of the third reduction structure, the oil drain hole is used to drain oil, the oil filling device allows lubricating oil to enter the device, and the oil suction pump is used to suck oil.

[0008] Further, a first pinion is fixedly provided at the center of the outer surface of the first connecting shaft, shaft sleeves are fixedly provided on both sides of the first pinion on the outer surface of the first connecting shaft, first sealing covers are fixedly provided on the outer surface of the first connecting shaft near the edges of both sides of the base, and a bearing is fixedly provided on the first connecting shaft near the first sealing cover;

[0009] Through the above technical solution, the first small gear is meshed with the second large gear, the sleeve is used to fix the position of the first small gear, the first sealing cover is used to seal the connection gap between the first connecting shaft and the device, and the bearing enables the connecting shaft to rotate.

[0010] Furthermore, a second sealing cover is fixedly provided on the edge positions of both sides of the outer surface of the second connecting shaft close to the base, a first large gear is fixedly provided on the edge position of the outer surface of the second connecting shaft, and gear sleeves are fixedly provided on both sides of the first large gear on the outer surface of the second connecting shaft;

[0011] Through the above technical solution, the second sealing cover is used to seal the connection gap between the second connecting shaft and the device, the first large gear is used to mesh with the second small gear, and the gear sleeve is used to fix the position of the first large gear.

[0012] Further, a third sealing cover is fixedly provided on both sides of the outer surface of the third connecting shaft near the base, a second large gear is highly provided on one side of the outer surface of the third connecting shaft, and a second small gear is fixedly provided on the other side of the outer surface of the third connecting shaft;

[0013] Through the above technical solution, the third sealing cover is used to seal the gap between the third connecting shaft and the device, the second large gear is used to mesh with the first small gear for transmission, and the second small gear is used to mesh with the first large gear for transmission.

[0014] Furthermore, an oil suction hole is fixedly connected to the other side of the oil suction pump, and a sealing plug is clamped around the inner surface of the oil suction hole;

[0015] Through the above technical solution, the oil suction hole is used to transmit the suction force of the oil suction pump to suck oil, and the sealing plug is used to seal the oil suction hole.

[0016] Furthermore, a sealing bolt is threadedly connected around the inner surface of the oil drain hole, and a sealing ring is clamped and arranged on the other side of the sealing bolt;

[0017] Through the above technical solution, the sealing bolt is used to seal the oil drain hole, and the sealing ring can strengthen the sealing of the sealing bolt.

[0018] Furthermore, the viewing hole structure comprises a viewing axis hole, and a viewing hole cover is threadedly connected around the upper end surface of the viewing axis hole via a plurality of connecting bolts;

[0019] Through the above technical solution, the sight hole is used to observe the internal situation of the device, the connecting bolt is used to connect the sight hole cover, and the sight hole cover is used to seal the sight hole.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model proposes a speed reducer for an industrial robot. The device achieves the purpose of speed reduction by setting three connecting shafts and installing multiple gears on the shafts. The connection of multiple shafts and multiple gears can achieve the purpose of speed reduction more efficiently. It has an extremely high speed reduction ratio, makes the operation more stable, and prolongs the service life of the device.

[0022] 2. The utility model proposes a reducer for an industrial robot. The device has an oil filling device on one side of the base. The oil suction pump can suck oil through the oil suction hole to allow the lubricating oil to enter the interior, thereby reducing manual oil filling and preventing damage to the device due to frequent assembly and disassembly. The oil discharge structure can discharge the lubricating oil, making it convenient to replace the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an axonometric drawing of the utility model;

[0024] Figure 2 It is an exploded view of the utility model;

[0025] Figure 3 This is a schematic diagram of the first internal structure of the utility model;

[0026] Figure 4 It is a second internal structure schematic diagram of the utility model;

[0027] Figure 5 It is a partial cross-sectional view of the utility model.

[0028] Legend:

[0029] 1. Base; 2. Top cover; 3. Sight hole structure; 301. Sight axis hole; 302. Sight hole cover; 303. Connecting bolts; 4. Oil filling device; 401. Oil suction pump; 402. Oil suction hole; 403. Sealing plug; 5. Oil discharge structure; 501. Oil discharge hole; 502. Sealing ring; 503. Sealing bolt; 6. Fixing bolt; 7. First reduction structure; 701. First connecting shaft; 702. First small gear; 703. Bushing; 704. First sealing cover; 8. Second reduction structure; 801. Second connecting shaft; 802. Gear sleeve; 803. First large gear; 804. Second sealing cover; 9. Third reduction structure; 901. Third connecting shaft; 902. Second large gear; 903. Second small gear; 904. Third sealing cover; 10. Bearing. DETAILED DESCRIPTION

[0030] 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.

[0031] Example

[0032] Reference Figure 1-5 The utility model provides an embodiment: a speed reducer for an industrial robot, comprising a base 1, a top cover 2 is threadedly connected around the upper end surface of the base 1 through a fixing bolt 6, the top cover 2 can seal the upper end surface of the base 1, a viewing hole structure 3 is opened at the center of the upper end surface of the top cover 2, a first speed reduction structure 7 is rotatably arranged on one side of the upper end surface of the base 1, the first speed reduction structure 7 includes a first connecting shaft 701, the first connecting shaft 701 can be connected to an external motor to provide rotation, and a second speed reduction structure 8 is rotatably arranged on the other side of the upper end of the base 1, the second speed reduction structure 8 includes a second connecting shaft 8 01, the second connecting shaft 801 connects the decelerated rotation to one end of the industrial robot, and a third deceleration structure 9 is rotatably arranged at the center position of the upper end surface of the base 1. The third deceleration structure 9 includes a third connecting shaft 901, and the third connecting shaft 901 is decelerated in the middle. An oil drain structure 5 is provided at the lower position on the other side of the base 1, and the oil drain structure 5 includes an oil drain hole 501. The oil drain hole 501 allows the lubricating oil to flow out of the device. An oil injection device 4 is provided at the edge of the other side of the base 1 near the oil drain structure 5. The oil injection device 4 includes an oil suction pump 401, and the oil suction pump 401 provides suction to suck oil.

[0033] A first pinion 702 is fixedly provided at the center position of the outer surface of the first connecting shaft 701, and the first pinion 702 meshes with the second large gear 902 to transmit rotation. Bushings 703 are fixedly provided on both sides of the first pinion 702 on the outer surface of the first connecting shaft 701, and the bushings 703 fix the first pinion 702 on the outer surface of the first connecting shaft 701. First sealing covers 704 are fixedly provided on the outer surface of the first connecting shaft 701 near the edge positions on both sides of the base 1, and the first sealing covers 704 seal the connection between the first connecting shaft 701 and the device. Bearings 10 are fixedly provided on the first connecting shaft 701 near the first sealing covers 704, and the bearings 10 enable the connecting shaft to rotate. Second sealing covers 804 are fixedly provided on the outer surface of the second connecting shaft 801 near the edge positions on both sides of the base 1, and the second sealing covers 804 seal the connection between the second connecting shaft 801 and the device. 01 A first large gear 803 is fixedly provided at the edge of the outer surface, and the first large gear 803 is meshed with the second small gear 903 to transmit the rotation after deceleration. Gear sleeves 802 are fixedly provided on both sides of the first large gear 803 on the outer surface of the second connecting shaft 801, and the gear sleeves 802 fix the first large gear 803 on the outer surface of the second connecting shaft 801. Third sealing covers 904 are fixedly provided on both sides of the outer surface of the third connecting shaft 901 near the base 1, and the third sealing covers 904 seal the connection between the third connecting shaft 901 and the device. A second large gear 902 is highly provided on one side of the outer surface of the third connecting shaft 901, and the second large gear 902 is meshed with the first small gear 702 to transmit the rotation of the motor. A second small gear 903 is fixedly provided on the other side of the outer surface of the third connecting shaft 901, and the second small gear 903 reduces the rotation speed and meshes with the first large gear 803 to transmit the rotation.

[0034] The other side of the oil suction pump 401 is fixedly connected with an oil suction hole 402, and the oil suction hole 402 absorbs oil by transmitting suction force through the oil suction pump 401. A sealing plug 403 is clamped around the inner surface of the oil suction hole 402, and the sealing plug 403 seals the oil suction hole 402 to prevent dust from entering. A sealing bolt 503 is threadedly connected around the inner surface of the oil drain hole 501, and the sealing bolt 503 seals the oil drain hole 501 to prevent impurities from entering the interior of the device. A sealing ring 502 is clamped on the other side of the sealing bolt 503, and the sealing ring 502 can enhance the sealing performance of the sealing bolt 503. The viewing hole structure 3 includes an axial viewing hole 301, and the axial viewing hole 301 can be used to observe the interior of the device to find out whether there is any problem with the device. A viewing hole cover 302 is threadedly connected around the upper end surface of the axial viewing hole 301 through multiple connecting bolts 303, and the viewing hole cover 302 seals the axial viewing hole 301 to prevent other objects from entering the interior of the device and damaging the device.

[0035] Working principle: The external motor is connected to the first connecting shaft 701 to provide rotation capability, and the other rotating devices of the industrial robot are connected to the second connecting shaft 801. The first connecting shaft 701 is driven by the motor, and the first small gear 702 on the first connecting shaft 701 drives the second large gear 902 on the third connecting shaft 901 to mesh, and the second large gear 902 rotates to drive the third connecting shaft 901 to mesh, and the second small gear 903 on the third connecting shaft 901 meshes with the first large gear 803, and the first large gear 803 drives the second connecting shaft 801 to rotate, so as to achieve the purpose of multi-stage transmission for deceleration. When lubrication is needed, the sealing plug 403 is opened, and the oil suction pump 401 sucks oil through the oil suction hole 402 to lubricate the internal gears. When oil needs to be drained, the sealing bolt 503 is opened and the oil is drained through the oil drain hole 501.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A speed reducer for an industrial robot, comprising a base (1), characterized in that: The upper end surface of the base (1) is threadedly connected to a top cover (2) via fixing bolts (6); a viewing hole structure (3) is provided at the center of the upper end surface of the top cover (2); a first deceleration structure (7) is rotatably provided on one side of the upper end surface of the base (1); the first deceleration structure (7) includes a first connecting shaft (701); a second deceleration structure (8) is rotatably provided on the other side of the upper end surface of the base (1); the second deceleration structure (8) includes a second connecting shaft (801); a third deceleration structure (9) is rotatably provided at the center of the upper end surface of the base (1); the third deceleration structure (9) includes a third connecting shaft (901); an oil discharge structure (5) is provided at a lower position on the other side of the base (1); the oil discharge structure (5) includes an oil discharge hole (501); an oil injection device (4) is provided at the edge of the other side of the base (1) near the oil discharge structure (5); the oil injection device (4) includes an oil suction pump (401).

2. The reducer for an industrial robot according to claim 1, characterized in that: A first pinion (702) is fixedly arranged at the center position of the outer surface of the first connecting shaft (701), shaft sleeves (703) are fixedly arranged on both sides of the first pinion (702) on the outer surface of the first connecting shaft (701), first sealing covers (704) are fixedly arranged on the outer surface of the first connecting shaft (701) near the edge positions on both sides of the base (1), and a bearing (10) is fixedly arranged on the first connecting shaft (701) near the first sealing cover (704).

3. The reducer for an industrial robot according to claim 1, characterized in that: A second sealing cover (804) is fixedly provided on both sides of the outer surface of the second connecting shaft (801) close to the edge positions of the base (1), a first large gear (803) is fixedly provided on the edge positions of the outer surface of the second connecting shaft (801), and a gear sleeve (802) is fixedly provided on both sides of the first large gear (803) on the outer surface of the second connecting shaft (801).

4. The reducer for an industrial robot according to claim 1, characterized in that: A third sealing cover (903) is fixedly provided on both sides of the outer surface of the third connecting shaft (901) close to the base (1), a second large gear (902) is arranged at a height on one side of the outer surface of the third connecting shaft (901), and a second small gear (904) is fixedly provided on the other side of the outer surface of the third connecting shaft (901).

5. The reducer for an industrial robot according to claim 1, characterized in that: The other side of the oil suction pump (401) is fixedly connected with an oil suction hole (402), and a sealing plug (403) is clamped around the inner surface of the oil suction hole (402).

6. The reducer for an industrial robot according to claim 1, characterized in that: A sealing bolt (503) is threadedly connected around the inner surface of the oil drain hole (501), and a sealing ring (502) is clamped on the other side of the sealing bolt (503).

7. The speed reducer for an industrial robot according to claim 1, characterized in that: The viewing hole structure (3) comprises a viewing axis hole (301), and a viewing hole cover (302) is threadedly connected around the upper end surface of the viewing axis hole (301) via a plurality of connecting bolts (303).

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