Planetary reducer torque monitoring module

Abstract

This application relates to a planetary reducer torque monitoring module in the field of torque monitoring technology. It includes an upper housing, a lower housing, an upper torque arm, a lower torque arm, a bearing, a torque sensor, a spline, and a spline sleeve. The upper housing is sleeved on the lower housing and rotatably connected to it via the bearing. The upper torque arm is fixed to the upper housing, and the lower torque arm is fixed to the lower housing. The upper and lower torque arms are connected by a torque sensor. The lower or upper housing has an axially hollow cavity, and the spline sleeve is fixed within the hollow cavity, with the spline fixed within the spline sleeve. This planetary reducer torque monitoring module improves the positioning accuracy and rigidity of the connection points, avoiding oil leakage problems caused by shaking. It eliminates the need for two reducers connected in series for torque monitoring; instead, the torque monitoring module is integrated into a single reducer by embedding it in the middle, making the overall structure more compact and reliable.

Description

Technical Field

[0001] This application relates to the field of torque monitoring technology, and in particular to a planetary gear reducer torque monitoring module. Background Technology

[0002] Traditional torque monitoring typically uses simple flange couplings to connect the gearbox, which is then supported and fixed by a torque arm. This requires two complete gearboxes working together to monitor overload and read torque values. This leads to unreliable positioning of the two gearboxes, causing wobbling and frequent oil leaks; poor concentricity and rigidity in positioning; and excessively long and non-compact gearboxes. Utility Model Content

[0003] The purpose of this application is to provide a planetary reducer torque monitoring module with a compact structure, high positioning accuracy, and high monitoring accuracy.

[0004] To achieve the above objectives, this utility model provides a planetary reducer torque monitoring module, including an upper housing, a lower housing, an upper torque arm, a lower torque arm, a bearing, a torque sensor, a spline, and a spline sleeve. The upper housing is sleeved on the lower housing and rotatably connected to the lower housing through the bearing. The upper torque arm is fixed on the upper housing, and the lower torque arm is fixed on the lower housing and arranged opposite to the upper torque arm. The upper torque arm and the lower torque arm are connected by a torque sensor. The lower housing or the upper housing has an axially hollow cavity. The spline sleeve is fixed in the hollow cavity, and the spline is fixed in the spline sleeve. When the spline rotates, it can drive the spline sleeve to rotate coaxially, and the spline sleeve can drive the lower housing or the upper housing to rotate coaxially.

[0005] To ensure the compactness and effectiveness of the connection between the upper and lower housings, the upper housing has an outer sleeve portion that is fitted over the lower housing and an inner sleeve portion that is fitted over the inner ring of the bearing, and the lower housing has a protrusion portion that is fitted over the outer ring of the bearing.

[0006] To ensure the airtightness between the upper and lower housings, an oil seal is provided at the gap between the upper and lower housings.

[0007] To ensure the overall compactness, the lower housing has the same outer diameter as the upper housing.

[0008] To ensure stability when the upper and lower housings rotate relative to each other, the bearing is a double-row roller bearing.

[0009] To facilitate the assembly and disassembly of the bearing, the bearing is fixed to the lower or upper housing by a snap ring.

[0010] To facilitate the assembly and disassembly of the upper and lower torque arms and to facilitate their cooperation with the torque sensor, the upper torque arm is fixed to the bottom end of the outer sleeve of the upper housing by a first bolt, and the lower torque arm is fixed to the bottom end of the protrusion of the lower housing by a second bolt. The lower torque arm is arranged parallel to the upper torque arm, and one end of the lower torque arm is connected to the upper torque arm through the torque sensor.

[0011] To facilitate docking with the input-stage planetary carrier and the second-stage planetary carrier, the top of the upper housing has an upper stop that allows the input-stage planetary carrier to be fitted, and the bottom of the lower housing has a lower stop that allows the second-stage planetary carrier to be fitted.

[0012] In summary, this utility model has the following beneficial effects: the planetary reducer torque monitoring module relies on the upper and lower housing stops and double-row roller bearings for positioning, rather than relying on two torque arms for support, which improves the positioning accuracy and rigidity of the connection parts and avoids the problem of oil leakage caused by shaking; this utility model no longer requires two reducers to be connected in series to realize torque monitoring, but only needs to insert the torque monitoring module into the middle part of one reducer and integrate it into one reducer, making the whole structure more compact and reliable. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the planetary reducer torque monitoring module of this utility model. Detailed Implementation

[0014] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0015] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] like Figure 1 The planetary reducer torque monitoring module shown includes an upper housing 2, a lower housing 1, an upper torque arm 4, a lower torque arm 3, a bearing 6, a torque sensor 5, a spline 14, and a spline sleeve 8.

[0017] Specifically, the lower housing 1 and the upper housing 2 have the same outer diameter. The top of the upper housing 2 has an upper stop that can be fitted onto the input stage planetary carrier, and the bottom of the lower housing 1 has a lower stop that can be fitted onto the second stage planetary carrier.

[0018] The upper housing 2 is sleeved on the lower housing 1 and rotatably connected to the lower housing 1 through the bearing 6. The upper housing 2 has an outer sleeve portion that is sleeved on the lower housing 1 and an inner sleeve portion that is sleeved on the inner ring of the bearing 6. The lower housing 1 has a protrusion portion that is sleeved on the outer ring of the bearing 6. The bearing 6 is a double-row roller bearing. The bottom end of the bearing 6 is fixed to the lower housing 2 or the upper housing 1 through the snap ring 9 and snap ring 10. The snap ring 9 and snap ring 10 press the bearing 6 between the inner sleeve portion of the upper housing 2 and the protrusion portion of the lower housing 1. In addition, an oil seal 7 is provided in the gap between the upper housing 2 and the lower housing 1.

[0019] The upper torque arm 4 is fixed to the bottom end of the outer sleeve of the upper housing 2 by the first bolt 11, and the lower torque arm 3 is fixed to the bottom end of the protrusion of the lower housing 1 by the second bolt 12. The lower torque arm 3 is arranged parallel to the upper torque arm 4. The right ends of the lower torque arm 3 and the upper torque arm 4 extend away from the lower housing 1 or the upper housing 2 and are connected by the torque sensor 5.

[0020] The lower housing 1 or the upper housing 2 has an axial hollow cavity. In this embodiment, it is preferable to set a hollow cavity in the upper housing 2. The spline sleeve 8 is coaxially fixed in the hollow cavity, and the spline 14 is coaxially set in the spline sleeve 8 and is relatively fixed by the spline snap ring 13. The top end of the spline 14 extends into the upper stop of the upper housing 2.

[0021] In use, the gear ring of the input stage planetary carrier is fixedly connected to the upper stop of the upper housing 2 of the torque monitoring module, and the gear ring of the second stage planetary carrier is fixed to the lower stop of the lower housing 1 of the torque monitoring module.

[0022] The spline inside the input stage planetary carrier mates with the top of the spline 14 of the torque monitoring module; when the input stage planetary assembly is running, torque is transmitted downward through the spline 14.

[0023] Spline 14 continues to transmit torque downwards through the variable inner spline sleeve 8. The output end of the variable inner spline sleeve 8 is connected to the sun gear of the second-stage planetary carrier, thus achieving the function of transmitting torque downwards to the planetary level (Note: The spline sleeve 8 can be changed according to the length of the sun gear and the spline specifications of the second-stage planetary carrier to achieve the function of being able to cooperate with the external spline of the second-stage sun gear).

[0024] Since the upper housing 2 and the lower housing 1 of the torque monitoring module are connected by an internal double-row roller bearing 6, the upper housing 2 and the lower housing 1 can rotate relative to each other; since the upper housing 2 and the upper torque arm 4 are fixed, and the lower housing 1 and the lower torque arm 3 are fixed, the rotation of the spline sleeve 8 can drive the upper housing 2 to rotate, so that the upper torque arm 4 and the lower torque arm 3 can move relative to each other.

[0025] When the reducer is running, the torque between the input planetary stage and the second planetary stage is transmitted to the upper torque arm 4 and the lower torque arm 3 through the housing. Then, by installing a torque sensor 5 between the upper torque arm 4 and the lower torque arm 3, the overload of the reducer can be monitored and the torque value can be read.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, principle and application direction of this application should be covered within the scope of protection of this application.

Claims

1. A planetary gear reducer torque monitoring module, characterized in that: The device includes an upper housing, a lower housing, an upper torque arm, a lower torque arm, a bearing, a torque sensor, a spline, and a spline sleeve. The upper housing is sleeved on the lower housing and rotatably connected to the lower housing via the bearing. The upper torque arm is fixed to the upper housing, and the lower torque arm is fixed to the lower housing and positioned opposite to the upper torque arm. The upper and lower torque arms are connected by a torque sensor. The lower housing or the upper housing has an axially hollow cavity. The spline sleeve is fixed inside the hollow cavity, and the spline is fixed inside the spline sleeve. When the spline rotates, it can drive the spline sleeve to rotate coaxially, and the spline sleeve can drive the lower housing or the upper housing to rotate coaxially.

2. The planetary reducer torque monitoring module according to claim 1, characterized in that: The upper housing has an outer sleeve portion that is fitted over the lower housing and an inner sleeve portion that is fitted over the inner ring of the bearing. The lower housing has a protrusion portion that is fitted over the outer ring of the bearing.

3. The planetary reducer torque monitoring module according to claim 2, characterized in that: An oil seal is provided at the gap between the upper and lower housings.

4. The planetary reducer torque monitoring module according to claim 2, characterized in that: The lower shell has the same outer diameter as the upper shell.

5. The planetary reducer torque monitoring module according to claim 1 or 2, characterized in that: The bearing is a double-row roller bearing.

6. The planetary reducer torque monitoring module according to claim 5, characterized in that: The bearing is fixed to the lower or upper housing by a snap ring.

7. The planetary reducer torque monitoring module according to claim 2, characterized in that: The upper torque arm is fixed to the bottom end of the outer sleeve of the upper housing by a first bolt, and the lower torque arm is fixed to the bottom end of the protrusion of the lower housing by a second bolt. The lower torque arm is arranged parallel to the upper torque arm, and one end of the lower torque arm and the upper torque arm are connected by a torque sensor.

8. The planetary reducer torque monitoring module according to claim 1, characterized in that: The top of the upper housing has an upper stop that allows the input stage planetary carrier to be fitted, and the bottom of the lower housing has a lower stop that allows the second stage planetary carrier to be fitted.

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