Planetary reducer precision detection device

Abstract

The utility model discloses a planetary reducer precision detection device, which relates to the technical field of reducer quality inspection, and comprises a circular ring, a plurality of groups of detection wheels are arranged on the inner side of the circular ring and are annularly distributed on the inner side of the circular ring, and the two ends of each detection wheel are connected with vertical rods. A rotating speed sensor used for measuring the speed of the detection wheel is installed in the vertical rod, the top end of the vertical rod extends into the circular ring, a cavity is formed in the circular ring, and a sliding plate slidably connected with the inner wall of the cavity is fixedly connected to the position, located at the top end of the vertical rod, in the cavity. According to the utility model, through the arrangement of the detection wheel and the slide rheostat, the rotation speed precision and the circle run-out precision of the planetary reducer can be integrated, so that the detection of two steps can be realized by using the detection time of one step, the detection efficiency of the planetary reducer is greatly improved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer quality inspection technology, specifically a planetary speed reducer precision testing device. Background Technology

[0002] Planetary gear reducers consist of an internal gear ring, gearbox housing, and sun gear. The internal gears are made of 20CrMnTi carburized, quenched, and ground steel. They are characterized by small size, light weight, high load capacity, long service life, smooth operation, low noise, high output torque, large speed ratio, high efficiency, and safe performance. The maximum input power can reach 104kW, and the reduction ratio can be accurate to 0.1-0.5 rpm. They are widely distributed in East and North China and can also be used as supporting components in industries such as lifting and transportation, engineering machinery, metallurgy, mining, petrochemicals, and construction machinery.

[0003] Currently, planetary gear reducers undergo rigorous quality inspections before leaving the factory. These inspections include various aspects such as appearance and function testing. Functional aspects include accuracy testing and operational status testing. Existing technologies require multiple devices to perform accuracy testing on planetary gear reducers step by step, which significantly impacts efficiency. Therefore, we propose a multi-functional planetary gear reducer accuracy testing device. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a planetary reducer accuracy testing device to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a planetary reducer precision testing device, comprising a ring, wherein a testing wheel is installed on the inner side of the ring, and multiple sets of testing wheels are distributed in a ring on the inner side of the ring. Both ends of the testing wheel are connected to a vertical rod, and a speed sensor for measuring the speed of the testing wheel is installed inside the vertical rod. The top end of the vertical rod extends into the inner side of the ring, and a cavity is formed inside the ring. A sliding plate that is slidably connected to the inner wall of the cavity is fixedly connected to the top end of the vertical rod inside the cavity.

[0006] By adopting the above technical solution, the speed accuracy and circular runout accuracy of the planetary reducer can be integrated, thereby achieving two-step testing in one-step testing time, which greatly improves the testing efficiency of the planetary reducer and increases production efficiency.

[0007] The present invention is further configured such that an adjustment plate is provided above the slide plate on the inner wall of the cavity, and a return spring is connected between the adjustment plate and the slide plate. A downwardly extending sliding rheostat is fixed at the top of the adjustment plate, and the sliding rheostat is electrically connected to an external power supply and a current-controlled recording device through a wire. A slip ring is slidably connected to the outer wall of the sliding rheostat, and an insulating connecting post extending to the top of the slide plate is fixedly connected to the bottom end of the slip ring.

[0008] By adopting the above technical solution, an integrated detection of the rotational accuracy and circular runout accuracy of the planetary reducer output shaft can be achieved.

[0009] The present invention is further configured such that a lead screw is rotatably connected to the top of the adjusting plate via a bearing, and a driven gear for driving the lead screw is fixedly connected to the top of the lead screw, while a nut adapted to the lead screw is installed on the outside of the lead screw.

[0010] By adopting the above technical solution, the adjustment plate is driven.

[0011] The present invention is further configured such that a drive gear ring is meshed with one side of the driven gear, and the drive gear ring is slidably connected to the inner wall of the cavity, while the thickness of the driven gear is much greater than the thickness of the driven gear.

[0012] By adopting the above technical solution, a comprehensive driving effect on the driven gear is achieved.

[0013] The present invention is further configured such that the top end of the drive gear ring is also provided with a toothed wall, and a dial wheel is meshed on the toothed wall, the top of the dial wheel extends to the outside of the ring, and the dial wheel is rotatably connected to the inner wall of the ring through a damping shaft.

[0014] By adopting the above technical solution, the driving effect of the drive gear ring is achieved.

[0015] In summary, the present invention has the following main advantages:

[0016] This invention utilizes a detection wheel and a sliding rheostat. First, the output spindle of the planetary reducer to be tested is placed at the center of the inner side of the ring. Then, the detection wheel is moved to the outer wall of the output spindle, and the planetary reducer is started. At this time, the output spindle drives the detection wheel to rotate. After the detection wheel rotates, the speed sensor in the vertical rod detects the speed of the output spindle, thereby achieving the purpose of speed accuracy detection. At the same time, the circular runout accuracy of the output spindle is also measured. Specifically, when the output spindle exhibits circular runout, it will squeeze the detection wheel to move outward. The movement of the detection wheel will push the vertical rod to move upward. At this time, the slide plate will move on the inner wall of the cavity and squeeze the return spring. Furthermore, the movement of the slide plate will also push the slip ring to slide on the sliding rheostat through the insulating connecting column, thereby changing the resistance of the sliding rheostat to achieve current fluctuation. The range of current fluctuation can be used to detect the circular runout accuracy of the planetary reducer.

[0017] This invention, by setting up a lead screw, a driven gear, a drive gear ring, and a dial wheel, allows the detection wheel to be moved. Rotating the dial wheel causes the drive gear ring to rotate, which in turn drives the driven gear, which in turn drives the lead screw. The lead screw then moves downwards under the action of the nut. This movement of the lead screw causes the adjusting plate to move, and as the adjusting plate moves, the sliding plate moves accordingly, thus achieving position adjustment of the detection wheel. This allows the device to be adapted to planetary reducers with different shaft diameters. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 This utility model Figure 2 Enlarged view of section A in the image;

[0021] Figure 4 This is a schematic diagram of the driving structure of this utility model.

[0022] In the diagram: 1. Ring; 2. Detection wheel; 3. Vertical rod; 4. Cavity; 5. Slide plate; 6. Adjustment plate; 7. Return spring; 8. Sliding rheostat; 9. Slip ring; 10. Insulating connecting post; 11. Lead screw; 12. Driven gear; 13. Drive gear ring; 14. Dial wheel. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The embodiments of this utility model will be described below based on its overall structure.

[0025] A planetary gear reducer accuracy testing device, such as Figure 1-4 As shown, the device includes a circular ring 1, with a detection wheel 2 installed on the inner side of the circular ring 1. Multiple sets of detection wheels 2 are arranged in a ring on the inner side of the circular ring 1. Vertical rods 3 are connected to both ends of the detection wheels 2. A speed sensor for measuring the speed of the detection wheels 2 is installed inside the vertical rods 3. The top of the vertical rods 3 extends into the interior of the circular ring 1. A cavity 4 is opened inside the circular ring 1. A sliding plate 5 that is slidably connected to the inner wall of the cavity 4 is fixedly connected to the top of the vertical rods 3 inside the cavity 4.

[0026] Furthermore, in this embodiment, an adjustment plate 6 is provided above the slide plate 5 on the inner wall of the cavity 4, and a reset spring 7 is connected between the adjustment plate 6 and the slide plate 5. A downwardly extending sliding rheostat 8 is fixed at the top of the adjustment plate 6, and the sliding rheostat 8 is electrically connected to an external power supply and a current-controlled recording device through a wire. A slip ring 9 is slidably connected on the outer wall of the sliding rheostat 8, and an insulating connecting post 10 extending to the top of the slide plate 5 is fixedly connected at the bottom end of the slip ring 9.

[0027] Please see Figure 4 The top of the adjusting plate 6 is rotatably connected to a lead screw 11 via a bearing, and the top of the lead screw 11 is fixedly connected to a driven gear 12 for driving the lead screw 11. A nut adapted to the lead screw 11 is installed on the outside of the lead screw 11, so that driving the lead screw 11 can realize the position adjustment of the adjusting plate 6.

[0028] Please see Figure 4 A drive gear ring 13 is meshed with one side of the driven gear 12, and the drive gear ring 13 is slidably connected to the inner wall of the cavity 4. The thickness of the driven gear 12 is much greater than that of the driven gear 12, so as to realize the all-position drive function of the driven gear 12.

[0029] Please see Figure 4 The top of the drive gear ring 13 is also provided with a toothed wall, and a dial wheel 14 is meshed on the toothed wall. The top of the dial wheel 14 extends to the outside of the ring 1, and the dial wheel 14 is rotatably connected to the inner wall of the ring 1 through a damping shaft to achieve the driving effect on the drive gear ring 13.

[0030] The working principle of this utility model is as follows: First, the output spindle of the planetary reducer to be tested is placed at the center of the inner side of the ring 1. Then, the detection wheel 2 is moved to the outer wall of the output spindle and the planetary reducer is started. At this time, the output spindle will drive the detection wheel to rotate. After the detection wheel 2 rotates, the speed sensor in the vertical rod 3 will detect the speed of the output spindle, thereby achieving the purpose of speed accuracy detection.

[0031] At the same time, the circular runout accuracy of the output spindle rotation will also be measured. Specifically, when the output spindle experiences circular runout, it will squeeze the detection wheel 2 to move outward, and the movement of the detection wheel 2 will push the vertical rod 3 to move upward. At this time, the slide plate 5 will move on the inner wall of the cavity 4 and squeeze the return spring 7. The movement of the slide plate 5 will also push the slip ring 9 to slide on the sliding rheostat 8 through the insulating connecting column 10, thereby changing the resistance value of the sliding rheostat 8 to achieve current fluctuation. The circular runout accuracy of the planetary reducer can be detected by the range of current fluctuation.

[0032] Furthermore, when the detection wheel 2 is moved, the dial wheel 14 is rotated, which drives the drive gear ring 13 to rotate. The drive gear ring 13 then drives the driven gear 12 to rotate, which in turn drives the lead screw 11 to rotate. The lead screw 11 then moves downward under the action of the nut. The movement of the lead screw 11 drives the adjusting plate 6 to move. As the adjusting plate 6 moves, the slide plate 5 also moves accordingly, thereby achieving position adjustment of the detection wheel 2. This allows the device to be adapted to planetary reducers with different shaft diameters.

[0033] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A planetary gear reducer accuracy testing device, comprising a circular ring (1), characterized in that: The inner side of the ring (1) is equipped with a detection wheel (2), and there are multiple sets of detection wheels (2) distributed in a ring on the inner side of the ring (1). Both ends of the detection wheel (2) are connected to a vertical rod (3), and a speed sensor for measuring the speed of the detection wheel (2) is installed inside the vertical rod (3). The top end of the vertical rod (3) extends into the inner side of the ring (1). The inner side of the ring (1) is provided with a cavity (4), and a sliding plate (5) that is slidably connected to the inner wall of the cavity (4) is fixedly connected to the top end of the vertical rod (3) inside the cavity (4).

2. The planetary reducer accuracy testing device according to claim 1, characterized in that: An adjustment plate (6) is provided above the slide plate (5) on the inner wall of the cavity (4), and a return spring (7) is connected between the adjustment plate (6) and the slide plate (5).

3. The planetary gear reducer accuracy testing device according to claim 2, characterized in that: The top of the adjustment plate (6) is fixed with a downward-extending sliding rheostat (8), and the sliding rheostat (8) is electrically connected to the external power supply and the current-controlled recording device through wires.

4. The planetary reducer accuracy testing device according to claim 3, characterized in that: A slip ring (9) is slidably connected to the outer wall of the sliding rheostat (8), and an insulating connecting post (10) extending to the top of the slide plate (5) is fixedly connected to the bottom end of the slip ring (9).

5. The planetary reducer accuracy testing device according to claim 2, characterized in that: The top of the adjusting plate (6) is rotatably connected to a lead screw (11) via a bearing, and the top of the lead screw (11) is fixedly connected to a driven gear (12) for driving the lead screw (11), while a nut adapted to the lead screw (11) is installed on the outside of the lead screw (11).

6. The planetary reducer accuracy testing device according to claim 5, characterized in that: The driven gear (12) is meshed with a drive gear ring (13) on one side, and the drive gear ring (13) is slidably connected to the inner wall of the cavity (4), while the thickness of the driven gear (12) is much greater than the thickness of the driven gear (12).

7. The planetary reducer accuracy testing device according to claim 6, characterized in that: The top of the drive gear ring (13) is also provided with a toothed wall, and a dial wheel (14) is meshed on the toothed wall. The top of the dial wheel (14) extends to the outside of the ring (1), and the dial wheel (14) is rotatably connected to the inner wall of the ring (1) through a damping shaft.

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