A ring gear for a planetary gear set

Abstract

The utility model belongs to the field of planetary gear system, propose a kind of for the inner tooth ring of planetary gear set, including ring body and the transmission tooth being arranged in ring body inner wall, the ring body is provided with multiple connecting holes, the ring body is provided with outer ring mouth in the position close to its lower half, the sidewall of outer ring mouth is provided with multiple reinforcing shafts along its circumferential direction evenly distributed, the lateral surface of ring body is provided with 3 evenly distributed reverse-stop notches, the mouth wall included angle of reverse-stop notch is right angle, the lateral surface of reverse-stop notch is provided with sensor mounting groove for installing sensor. The utility model is reasonable in design, it is convenient to guarantee bearing strength and transmission accuracy, it is convenient to install sensor and it is favorable for prolonging the overall actual service life of speed reducer, is suitable for large-scale popularization.

Description

Technical Field

[0001] This utility model belongs to the field of planetary gear systems, and particularly relates to an internal gear ring for planetary gear sets. Background Technology

[0002] Gear transmission is the most common and widely used transmission method in the mechanical field. Planetary gears are a type of gear system that rotates along an axis, named for their motion resembling that of planets in the solar system. A simple planetary gear mechanism consists of a sun gear, several planetary gears, and a ring gear. The sun gear is located at the center, and the planetary gears are supported by the fixed shaft of the planet carrier, allowing them to rotate on the support shaft. They are constantly meshed with the sun gear and the ring gear, and are typically helical gears. The ring gear is an internal gear, surrounding the planetary gears. Most internal ring gears use a traditional design, with the ring gear and reducer housing bolted together. However, both the inner wall of the ring gear and the reducer housing are smooth surfaces. For planetary gears inside reducers of heavy-duty and special vehicles, the high torque output increases the shear load on the bolts, affecting transmission accuracy and further impacting the overall lifespan of the reducer. Furthermore, as the main transmission component inside the reducer, it is inconvenient to measure the pressure and temperature parameters of the planetary gears in real time during operation, leading to delays in receiving timely feedback on problems. Utility Model Content

[0003] This utility model addresses the technical problems existing in the aforementioned internal gear rings by proposing a reasonably designed internal gear ring for planetary gear sets that ensures load-bearing strength and transmission accuracy, facilitates sensor installation, and helps extend the overall service life of the reducer.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides an internal gear ring for a planetary gear set, including a ring body and transmission teeth disposed on the inner wall of the ring body. The ring body is provided with multiple connecting holes. The ring body is provided with an outer ring opening near its lower half. Multiple reinforcing shafts are provided on the side wall of the outer ring opening, evenly distributed along its circumference. The side of the ring body is provided with three evenly distributed check grooves. The included angle between the opening walls of the check grooves is a right angle. The side of the check grooves is provided with sensor mounting grooves for mounting sensors.

[0005] Preferably, the connecting holes are divided into three groups, and each group of connecting holes is spaced apart from the check groove.

[0006] Preferably, the length direction of the sensor mounting groove is along the secant direction of the ring body.

[0007] Preferably, the sensor mounting groove is provided with a cylindrical protrusion, and the cylindrical protrusion is provided with a wire harness constraint hole that radially penetrates its side.

[0008] Preferably, the reinforcing shaft has a semi-cylindrical structure.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0010] This invention provides an internal gear ring for a planetary gear set. The outer ring mates with a shoulder on the inner wall of the reducer housing, strengthening the fit between the shaft and the cylindrical groove on the shoulder. A check groove mates with a ratchet protrusion on the inner wall of the reducer housing, thus creating multiple mating pairs between the internal gear ring and the reducer housing, which helps reduce the shear load on the bolts. A sensor mounting slot facilitates the installation of a patch sensor for monitoring the internal operating conditions of the reducer. This invention is rationally designed, ensures sufficient load-bearing capacity and transmission accuracy, facilitates sensor installation, and extends the overall service life of the reducer, making it suitable for large-scale application. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A perspective view of an internal gear ring for a planetary gear set provided for an embodiment;

[0013] Figure 2 A front view of an internal gear ring for a planetary gear set provided for an embodiment;

[0014] Figure 3 A top view of an internal gear ring for a planetary gear set provided as an embodiment;

[0015] Figure 4 A bottom view of an internal gear ring for a planetary gear set provided as an embodiment;

[0016] In the above figures: 1. Ring body; 2. Transmission gear; 3. Connecting hole; 4. Outer ring opening; 5. Reinforcing shaft; 6. Check groove; 7. Sensor mounting groove; 8. Cylindrical protrusion; 9. Wire harness constraint hole. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Examples, such as Figures 1-4 As shown, the present invention provides an internal gear ring for a planetary gear set, comprising a ring body 1 and transmission teeth 2 disposed on the inner wall of the ring body 1. The ring body 1 is provided with multiple connecting holes 3. The ring body 1 is provided with an outer ring opening 4 near its lower half. Multiple reinforcing shafts 5 are provided on the side wall of the outer ring opening 4 evenly distributed along its circumference. The side of the ring body 1 is provided with three evenly distributed check grooves 6. The included angle between the opening walls of the check grooves 6 is a right angle. The side of the check grooves 6 is provided with sensor mounting grooves 7 for mounting sensors.

[0020] Specifically, in this invention, the outer ring 4 on the ring body 1 mates with the shoulder on the inner wall of the reducer housing, strengthening the fit between the shaft 5 and the cylindrical groove on the shoulder. The check groove 6 mates with the ratchet protrusion on the inner wall of the reducer housing, thus establishing multiple mating pairs between the internal gear ring and the reducer housing, which helps reduce the shear load on the bolts. The sensor mounting slot 7 facilitates the installation of a patch sensor. The patch sensor is installed in the sensor mounting slot 7 by adhesive and screws, and the ratchet protrusion structure on the inner wall of the reducer housing forms a clamping effect with the sensor mounting slot 7. The sensor lead can be led out from the reducer housing and connected to the central control center via an electrical connection wire for monitoring the internal operating conditions of the reducer. This invention is reasonably designed, ensures load-bearing strength and transmission accuracy, facilitates sensor installation, and helps extend the overall service life of the reducer.

[0021] In order to facilitate the establishment of a synchronous connection between the internal gear ring and the reducer housing, the connecting holes 3 provided by this utility model are divided into three groups, and each group of connecting holes 3 is distributed at intervals with the non-return groove 6, thereby providing a sufficient number of connection nodes to ensure the synchronous relationship between the internal gear ring and the reducer housing, which in turn helps to ensure the transmission performance of the planetary gear.

[0022] Furthermore, the length direction of the sensor mounting groove 7 provided by this utility model is along the secant direction of the ring body 1, the groove surface of the sensor mounting groove 7 is right angled, and the cross-section of the ratchet protrusion of the inner wall of the reducer housing that mates with this position is triangular, thereby establishing a sufficient anti-reverse contact surface, forming a stable and reliable mating pair, and thus ensuring the transmission performance of the planetary gear.

[0023] To facilitate the fixing of the sensor wiring harness, the sensor mounting groove 7 provided by this utility model is provided with a cylindrical protrusion 8. The cylindrical protrusion 8 is provided with a wiring harness constraint hole 9 that radially penetrates its side. The maximum center distance between the cylindrical protrusion 8 and the internal gear ring is not greater than the outer surface diameter of the ring body 1. This allows the patch sensor used to obtain detection to be stably and reliably concealed between the ring body 1 and the reducer housing.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An internal gear ring for a planetary gear set, comprising a ring body and transmission teeth disposed on the inner wall of the ring body, wherein the ring body is provided with a plurality of connecting holes, characterized in that, The ring body has an outer ring opening near its lower half. Multiple reinforcing shafts are evenly distributed along its circumference on the side wall of the outer ring opening. The side of the ring body has three evenly distributed anti-reverse grooves with right angles between the opening walls. The side of the anti-reverse grooves has a sensor mounting groove for mounting sensors.

2. The internal gear ring for a planetary gear set according to claim 1, characterized in that, The connecting holes are divided into three groups, and each group of connecting holes is spaced apart from the check groove.

3. An internal gear ring for a planetary gear set according to claim 2, characterized in that, The length direction of the sensor mounting slot is along the secant direction of the ring body.

4. An internal gear ring for a planetary gear set according to claim 3, characterized in that, The sensor mounting slot is provided with a cylindrical protrusion, and the cylindrical protrusion is provided with a wire harness constraint hole that radially penetrates its side.

5. An internal gear ring for a planetary gear set according to claim 4, characterized in that, The reinforcing shaft has a semi-cylindrical structure.

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