Gearbox gear for robot rotary joint

Abstract

The utility model relates to the field of gears, and discloses a gear box gear for a robot rotary joint, which comprises a gear body, a plurality of reinforcing ribs are fixedly connected to the outer walls of the upper side and the lower side of the gear body, an oil storage tank and a plurality of cavities are sequentially formed in the inner wall of the gear body from inside to outside, and extrusion assemblies are arranged in the cavities. The extrusion assembly comprises a baffle, the baffle is fixedly connected to the inner wall of the cavity, the outer wall of the baffle is fixedly connected with two sliding rods, a sliding plate is slidably connected between the two sliding rods, the outer walls of the sliding rods are sleeved with springs, the reinforcing ribs are arc-shaped, and the reinforcing ribs are evenly distributed on the outer walls of the upper side and the lower side of the gear body. When the gear works, centrifugal force is used for driving the extrusion assembly, so that the sliding plate slides on the sliding rod, the sealing ring is driven to move, the oil inlet is opened, lubricating oil is conveyed to the tooth surface through the oil inlet, the oil conveying opening and the oil outlet in sequence, and precise lubrication is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear field especially relates to a gear box gear for robot rotary joint. BACKGROUND

[0002] The gear box gear for robot rotary joint is a key transmission component applied in the gear box of robot rotary joint, which realizes the transformation of rotation speed and torque through the combination of gears with different teeth, so that the robot joint can move at appropriate speed and power to meet the needs of different working scenes and tasks.

[0003] The traditional gear lubrication mode is often difficult to realize precise lubricating oil delivery. During the operation of the robot, the working state of the gear is complex and changeable, and the load and rotation speed change all the time, so the lubrication requirement is very high. The common lubrication system is to manually add lubricating oil at regular intervals or to use simple oil bath lubrication. The former cannot adjust the lubricating oil supply according to the real-time working condition of the gear, which is prone to insufficient lubrication, aggravates the gear surface wear, and shortens the service life of the gear. The latter can ensure certain lubrication, but the consumption of lubricating oil is large, so a gear box gear for robot rotary joint is proposed. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a gear box gear for robot rotary joint, which aims at improving the problem that the common lubrication system in the prior art is to manually add lubricating oil at regular intervals or to use simple oil bath lubrication. The former cannot adjust the lubricating oil supply according to the real-time working condition of the gear, which is prone to insufficient lubrication, aggravates the gear surface wear, and shortens the service life of the gear. The latter can ensure certain lubrication, but the consumption of lubricating oil is large.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a gear box gear for robot rotary joint, comprising a gear body, a plurality of reinforcing ribs are fixedly connected to the upper and lower outer walls of the gear body, a plurality of cavities and an oil storage groove are sequentially arranged on the inner wall of the gear body from inside to outside, and an extrusion assembly is arranged in the cavity.

[0006] The extrusion assembly comprises a baffle, the baffle is fixedly connected to the inner wall of the cavity, two sliding rods are fixedly connected to the outer wall of the baffle, a sliding plate is slidably connected between the two sliding rods, and a spring is sleeved on the outer wall of the sliding rod.

[0007] As a further description of the above technical scheme:

[0008] The reinforcing ribs are arc-shaped, and a plurality of reinforcing ribs are uniformly distributed on the upper and lower outer walls of the gear body.

[0009] As a further description of the above technical scheme:

[0010] One end of the spring is fixedly connected to the baffle, and the other end of the spring is fixedly connected to one side of the sliding plate close to the baffle.

[0011] As a further description of the above technical solution:

[0012] The gear body surface is provided with a plurality of oil outlets, and the oil outlets are communicated with the cavity.

[0013] As a further description of the above technical solution:

[0014] The gear body is internally provided with an oil inlet, and the oil storage groove and the cavity are communicated through the oil inlet.

[0015] As a further description of the above technical solution:

[0016] The baffle surface is provided with a plurality of oil outlets, and the oil outlets are used for conveying lubricating oil.

[0017] As a further description of the above technical solution:

[0018] The side of the sliding plate away from the oil outlet is fixedly connected with a sealing ring, and the sealing ring abuts against the oil inlet.

[0019] The utility model has the following beneficial effects:

[0020] 1、 in the utility model, when the gear works, the centrifugal force is used to drive the extrusion assembly, the sliding plate is slid on the sliding rod, the sealing ring is driven to move, the oil inlet is opened, the lubricating oil is conveyed to the tooth surface through the oil inlet, the oil outlet and the oil outlet in sequence, precise lubrication is realized, and after the gear stops working, the spring releases potential energy and pushes the sliding plate and the sealing ring to slide, the oil inlet is blocked, lubricating oil leakage is prevented, and the lubricating system is stable and reliable.

[0021] 2、 in the utility model, the plurality of arc reinforcing ribs fixedly connected on the upper and lower two sides of the gear body not only can significantly enhance the structural strength of the gear, but also can better fit the circumferential shape of the gear body by virtue of the unique arc design, effectively disperse the stress generated by the frequent and complex movement of the robot rotary joint, high torque transmission and impact, and avoid stress concentration phenomenon. DRAWINGS

[0022] Figure 1 A perspective view of a gear box gear for a robot rotary joint is provided for the utility model;

[0023] Figure 2 For Figure 1 The enlarged view of A in the middle;

[0024] Figure 3The utility model provides a kind of gear body sectional view of gear box gear for robot rotary joint.

[0025] Legend:

[0026] 1, gear body;2, reinforcing rib;3, oil storage tank;4, cavity;5, baffle;6, sliding rod;7, sliding plate;8, sealing ring;9, spring;10, oil outlet;11, oil inlet;12, oil inlet. Specific embodiments

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0028] Reference Figures 1-3 , the utility model provides an embodiment: a kind of gear box gear for robot rotary joint, including gear body 1, gear body 1 upper and lower two sides outer wall are all fixedly connected with multiple reinforcing ribs 2, reinforcing rib 2 can significantly enhance the structural strength of gear body 1, in the frequent and complex movement process of robot rotary joint, effectively resist the stress generated by high torque transmission and impact, gear body 1 inner wall is sequentially provided with oil storage tank 3 and multiple cavities 4 from inside to outside, oil storage tank 3 is used to store lubricating oil, provides sustained lubrication guarantee for the long-term stable operation of gear, cavity 4 provides mounting space for extrusion assembly, cavity 4 is provided with extrusion assembly inside, extrusion assembly can extrude lubricating oil in oil storage tank 3 in time according to actual demand when gear works, realizes accurate lubrication;

[0029] Reference Figure 3 , extrusion assembly includes baffle 5, baffle 5 is fixedly connected in cavity 4 inner wall, baffle 5 plays the role of separation and support, ensure the structural stability of extrusion assembly, baffle 5 outer wall is fixedly connected with two sliding rods 6, sliding rod 6 provides guiding and supporting effect for the sliding of sliding plate 7, ensure that sliding plate 7 can accurately carry out extrusion action, two sliding rods 6 are slidably connected with sliding plate 7, sliding plate 7 slides on the outer wall of sliding rod 6, realizes the effect that lubricating oil inside oil storage tank 3 is transported to inside cavity 4, spring 9 is sleeved on the outer wall of sliding rod 6, spring 9 is used to provide elasticity, so that sealing ring 8 is always fitted with cavity 4 inner wall.

[0030] Reference Figure 1The reinforcing ribs 2 are arc-shaped, and are evenly distributed on the upper and lower outer walls of the gear body 1. Compared with other shapes, the arc-shaped reinforcing ribs 2 can better adapt to the circumferential shape of the gear body 1, effectively disperse stress, and avoid the emergence of stress concentration, while enhancing the structural strength. The even distribution of the reinforcing ribs 2 can balance the strength of each part of the gear body 1, and maintain good structural stability in any direction under torque or impact.

[0031] With reference to Figure 3 One end of the spring 9 is fixedly connected to the baffle 5, and the other end of the spring 9 is fixedly connected to the side of the sliding plate 7 close to the baffle 5, so that the spring 9 can effectively transmit the elastic force to the sliding plate 7 when providing the elastic force, thereby ensuring that the sliding plate 7 can be attached to the inner wall of the cavity 4 to block the oil inlet 12.

[0032] With reference to Figure 3 The gear body 1 is provided with a plurality of oil outlets 10 on the surface, and the oil outlets 10 are communicated with the cavity 4. The oil outlets 10 can guide the lubricating oil extruded by the extrusion assembly in the cavity 4 to the tooth surface of the gear body 1.

[0033] With reference to Figure 3 The gear body 1 is provided with an oil inlet 12 inside, and the oil storage groove 3 and the cavity 4 are communicated through the oil inlet 12. By providing the oil inlet 12, the lubricating oil in the oil storage groove 3 can be transported to the inside of the cavity 4 by centrifugal force during the rotation of the gear body 1.

[0034] With reference to Figure 3 The baffle 5 is provided with a plurality of oil inlets 11 on the surface, and the oil inlets 11 are used for conveying lubricating oil. When the lubricating oil enters the inside of the cavity 4, the sliding plate 7 will slide on the sliding rod 6 under the action of centrifugal force. At this time, the lubricating oil in the cavity 4 will be conveyed to the oil outlet 10 for extrusion under the action of centrifugal force and the cooperation of the oil inlet 11.

[0035] With reference to Figure 3 The side of the sliding plate 7 away from the oil inlet 11 is fixedly connected with a sealing ring 8, and the sealing ring 8 abuts against the oil inlet 12. The oil inlet 12 effectively prevents the lubricating oil from leaking from the connection between the sliding plate 7 and the oil inlet 12 when the gear stops rotating.

[0036] Working principle: when the gear body 1 works, the gear body 1 will be driven by the external gear to rotate, when the gear body 1 rotates, centrifugal force will be generated, at this time, the sliding plate 7 will slide along the surface of the sliding rod 6 under the action of the centrifugal force, and the spring 9 is extruded, so that the spring 9 stores potential energy, when the sliding plate 7 slides, the sealing ring 8 will be driven to slide, so that the sealing ring 8 no longer blocks the oil inlet 12, at this time, the lubricating oil in the oil storage groove 3 will be transported to the tooth surface of the gear body 1 through the action of the centrifugal force, the oil inlet 12, the oil outlet 11 and the oil outlet 10, and the tooth surface of the gear body 1 is lubricated, so as to reduce the friction between the gears, when the gear body 1 stops working, the centrifugal force disappears, at this time, the spring 9 releases the stored potential energy, so as to push the sliding plate 7 to slide, further drive the sealing ring 8 to slide, block the oil inlet 12, so that the lubricating oil no longer enters the cavity 4.

[0037] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A gear box gear for a robot rotary joint, comprising a gear body (1), characterized in that: The gear body (1) is fixedly connected with a plurality of reinforcing ribs (2) on the upper and lower outer walls, the inner wall of the gear body (1) is sequentially provided with an oil storage groove (3) and a plurality of cavities (4) from inside to outside, and the cavity (4) is provided with an extrusion assembly inside; The extrusion assembly comprises a baffle (5), the baffle (5) is fixedly connected to the inner wall of the cavity (4), the outer wall of the baffle (5) is fixedly connected with two slide rods (6), the slide rods (6) are slidably connected with a sliding plate (7) between them, and the outer wall of the slide rod (6) is sleeved with a spring (9).

2. A gearbox gear for a robotic rotary joint according to claim 1, characterized in that: The reinforcing rib (2) is arc-shaped, and a plurality of reinforcing ribs (2) are uniformly distributed on the upper and lower outer walls of the gear body (1).

3. A gearbox gear for a robotic rotary joint according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the baffle (5), and the other end of the spring (9) is fixedly connected to one side of the sliding plate (7) close to the baffle (5).

4. A gearbox gear for a robotic rotary joint according to claim 1, characterized in that: The gear body (1) is provided with a plurality of oil outlets (10) on the surface, and the oil outlet (10) and the cavity (4) are communicated.

5. A gearbox gear for a robotic rotary joint according to claim 1, characterized in that: The gear body (1) is provided with an oil inlet (12) inside, and the oil storage groove (3) and the cavity (4) are communicated through the oil inlet (12).

6. A gearbox gear for a robotic rotary joint according to claim 5, characterized in that: The surface of the baffle (5) is provided with a plurality of oil outlets (11), and the oil outlet (11) is used for conveying lubricating oil.

7. A gearbox gear for a robotic rotary joint according to claim 6, characterized in that: The side of the sliding plate (7) away from the oil outlet (11) is fixedly connected with a sealing ring (8), and the sealing ring (8) and the oil inlet (12) abut.

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