Intelligent decelerator

Abstract

The application is particularly an intelligent speed reducer, which solves the problems of small transmission ratio, low transmission efficiency and large self-consumption of the existing speed reducer. The intelligent speed reducer comprises a box body, a box seat and a box cover, and a brake gear shaft and an intermediate gear shaft are rotatably connected between the box seat and the box cover; a planetary gear mechanism is arranged between an input shaft and the brake gear shaft, and a sun gear is sleeved on the input shaft; an end of the brake gear shaft is fixedly connected with a planet carrier; an output shaft gear is fixedly assembled on an output shaft; a torque support arm is fixedly arranged on an outer portion of an inner ring gear, a torque support arm I is fixedly arranged on an inner wall of the box body, and a force sensor is arranged between the torque support arm and the torque support arm I. The application achieves the purpose of increasing the transmission ratio of the speed reducer, has high transmission efficiency, avoids the problem of large self-consumption of the belt, realizes intelligent control and monitoring, has high mechanical efficiency, has low failure rate, and is particularly suitable for oilfield long-stroke and low-stroke pumping units.

Description

Technical Field

[0001] This invention relates to the field of speed reducer technology, specifically an intelligent speed reducer. Background Technology

[0002] Currently, most oilfields have entered the middle and late stages of development, and the underground conditions have changed. Existing wells are showing signs of reduced oil layer depth and poor fluidity. Meanwhile, newly developed wells are reaching increasingly deeper depths, and existing pumping units can no longer meet the needs of oilfield development. Therefore, the development of long-stroke, low-stroke pumping units is urgently needed. Long-stroke, low-stroke pumping units in oilfields require reducers with large transmission ratios, but existing reducers have a small transmission ratio range, typically only around 30, which cannot meet the transmission ratio requirements of long-stroke, low-stroke pumping.

[0003] Therefore, a high-ratio belt drive is typically used at the input shaft of the reducer to lower the input speed. However, this results in high belt energy consumption and significant belt wear during operation. Therefore, it is necessary to invent an intelligent reducer with a large transmission ratio and high transmission efficiency to solve the problems of low transmission ratio, low transmission efficiency, and high belt wear in existing reducers. Summary of the Invention

[0004] To address the problems of small transmission ratio, low transmission efficiency, and high wear and tear on belts in existing reducers, this invention provides an intelligent reducer.

[0005] This invention is achieved using the following technical solution:

[0006] An intelligent reducer includes a housing, an input shaft, and an output shaft. The housing includes a housing base and a housing cover. The input shaft and the output shaft are rotatably supported between the housing base and the housing cover by bearings. A brake gear shaft located behind and coaxially placed with the input shaft and an intermediate gear shaft located between the input shaft and the output shaft are rotatably connected between the housing base and the housing cover by bearing I. A planetary gear mechanism consisting of a sun gear, planet gears, a planet carrier, and an internal gear ring is provided between the input shaft and the brake gear shaft. The sun gear is fixedly mounted on the input shaft. The end of the brake gear shaft is fixedly connected to the planet carrier. An output shaft gear is fixedly mounted on the output shaft, and the intermediate gear shaft meshes with the output shaft gear. An intermediate gear that meshes with the brake gear shaft is fixedly mounted on the intermediate gear shaft.

[0007] A torque support arm is fixed to the outside of the internal gear ring, and a torque support arm I is fixed to the inner wall of the housing. A force sensor is set between the torque support arm and the torque support arm I, and the force-bearing surface of the force sensor is in contact with the surface of the torque support arm.

[0008] Furthermore, the torque support arm I is fixedly connected to the box base or box cover; a sensor connection line is fixedly connected to the side of the force sensor perpendicular to its force-bearing surface, and the other end of the sensor connection line extends out of the box cover.

[0009] Furthermore, the gears on the intermediate gear shaft and the output shaft are both herringbone double circular arc gears.

[0010] Furthermore, an upward-facing auxiliary lubricating oil reservoir is fixed on the internal gear ring, and the bottom of the planetary gear located below extends into the interior of the auxiliary lubricating oil reservoir.

[0011] Furthermore, the force sensor is a weighing sensor.

[0012] Furthermore, the torque support arm and the force sensor, as well as the torque support arm I and the force sensor, are all connected by bolts.

[0013] The present invention has a reasonable and reliable structural design, which achieves the purpose of increasing the transmission ratio of the reducer, and has high transmission efficiency. High speed input avoids the problem of high wear of the belt itself. At the same time, it realizes intelligent control and monitoring, has high mechanical efficiency and low failure rate, and is particularly suitable for long-stroke and low-stroke pumping units in oil fields. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the external structure of the present invention;

[0016] Figure 3 When the moment support arm I of the present invention is connected to the box base, along the force... Figure 2 Sectional view of line AA in the middle;

[0017] Figure 4 yes Figure 3 Connection diagram at the force sensor;

[0018] Figure 5 When the moment support arm I of the present invention is connected to the box cover, along the force... Figure 2 Sectional view of line AA in the middle;

[0019] Figure 6 yes Figure 5 Connection diagram at the force sensor.

[0020] In the diagram, 1-input shaft, 2-output shaft, 3-box base, 4-box cover, 5-brake gear shaft, 6-intermediate gear shaft, 7-sun gear, 8-planet gear, 9-planet carrier, 10-internal gear ring, 11-output shaft gear, 12-torque support arm, 13-torque support arm I, 14-force sensor, 15-sensor connection wire, 16-auxiliary lubricating oil sump, 17-bolt, 18-oil scraper, 19-lubricating oil groove, 20-bearing, 21-bearing I, 22-intermediate gear. Detailed Implementation

[0021] A smart reducer includes a housing, an input shaft 1, and an output shaft 2; as shown in the attached figure. Figure 1 -Appendix Figure 3 Appendix Figure 5 As shown, the housing includes a housing base 3 and a housing cover 4. The input shaft 1 and the output shaft 2 are rotatably supported between the housing base 3 and the housing cover 4 via bearings 20. The housing base 3 and the housing cover 4 are also rotatably connected via bearings 121 to a brake gear shaft 5 located behind the input shaft 1 and placed coaxially with it, and an intermediate gear shaft 6 located between the input shaft 1 and the output shaft 2. A planetary gear mechanism consisting of a sun gear 7, planet gears 8, a planet carrier 9, and an internal gear ring 10 is provided between the input shaft 1 and the brake gear shaft 5. The sun gear 7 is fixedly fitted onto the input shaft 1. The end of the brake gear shaft 5 is fixedly connected to the planet carrier 9. An output shaft gear 11 is fixedly mounted on the output shaft 2, and the intermediate gear shaft 6 meshes with the output shaft gear 11. An intermediate gear 22 that meshes with the brake gear shaft 5 is fixedly mounted on the intermediate gear shaft 6.

[0022] As attached Figure 4 Appendix Figure 6 As shown, a torque support arm 12 is fixed to the outside of the internal gear ring 10, and a torque support arm I13 is fixed to the inner wall of the housing. A force sensor 14 is provided between the torque support arm 12 and the torque support arm I13, and the force-bearing surface of the force sensor 14 is in contact with the surface of the torque support arm 12.

[0023] This invention employs a three-stage gear transmission mechanism with a visible three-axis and a concealed four-axis design, significantly improving the transmission ratio of this intelligent reducer to between 100 and 160. This enables the intelligent reducer to achieve high-speed input and optimizes the belt drive on the input shaft 1 side. High-speed input reduces the overall cost of ordinary V-belts or triangular belts by 60% and increases efficiency by over 10%. The high-speed input also results in high linear velocity and a large wrap angle for the V-belts or triangular belts, greatly reducing the radial force on the input shaft 1. Simultaneously, this intelligent reducer incorporates a force sensor 14 output device designed for load-bearing capacity. Through the interaction of the torque support arm 12 and torque support arm 113, the force sensor 14 can output the applied dynamic torque. This enables intelligent control and monitoring, resulting in high mechanical efficiency and a low failure rate. It is particularly suitable for long-stroke, low-stroke pumping units in oil fields.

[0024] During operation, power is input through input shaft 1 and transmitted to sun gear 7, then to planetary carrier 9, which in turn transmits the power to brake gear shaft 5, then to output shaft gear 11 via intermediate gear shaft 6, and finally out through output shaft 2. During this process, the dynamic torque borne by the internal gear ring 10 under the action of torque support arms 12 and 113 is output through force sensor 14. This invention overcomes the problems of small transmission ratio, low transmission efficiency, and high belt wear in existing reducers.

[0025] After starting, the motor of this intelligent reducer operates at high speed. The speed of input shaft 1 is close to that of the motor. The rotor of the motor, input shaft 1, and all gears store rotational mechanical energy. There is no loss of kinetic energy. When used in a pumping unit, more energy can be stored during pumping unit reversal. This energy can play a balancing role during pumping unit reversal. The pumping unit's motion system operates in a stable state. Therefore, during pumping unit mechanical reversal, the peak current of the motor is less than the current under rated conditions.

[0026] As attached Figure 4 Appendix Figure 6 As shown, the torque support arm I13 is fixedly connected to the box base 3 or the box cover 4; a sensor connection line 15 is fixedly connected to the side of the force sensor 14 that is perpendicular to its force-bearing surface, and the other end of the sensor connection line 15 passes through the box cover 4.

[0027] As attached Figure 1 As shown, the gears of the intermediate gear shaft 6 and the output shaft gear 11 are both herringbone double circular arc gears.

[0028] In this invention, the planetary gear mechanism achieves a single-stage coaxial planetary reduction, while the gear transmission between the brake gear shaft 5, intermediate gear shaft 6, and output shaft gear 11 achieves a two-stage herringbone gear reduction. To reduce gear backlash, both the gears on the intermediate gear shaft 6 and the output shaft gear 11 employ a double-circular-arc tooth profile. This ensures that the total gear backlash is less than the total gear backlash of a two-stage herringbone gear transmission in advanced international standards. This makes the intelligent reducer suitable for driving impact loads.

[0029] As attached Figure 1 Appendix Figure 3 Appendix Figure 5 As shown, an upper-facing auxiliary lubricating oil pool 16 is fixed on the internal gear ring 10, and the bottom of the planetary gear 8 located below extends into the interior of the auxiliary lubricating oil pool 16.

[0030] The auxiliary lubricating oil sump 16 is dedicated to lubricating the coaxial planetary reduction mechanism. By changing the position of the auxiliary lubricating oil sump 16 within the housing, the lubrication circuit structure becomes more rational. The lubricating oil in the auxiliary lubricating oil sump 16 flows in via gear meshing and splashing from the brake gear shaft 5 and the intermediate gear shaft 6, achieving forced circulation lubrication. Once full, the oil automatically flows back into the housing.

[0031] The force sensor 14 is a weighing sensor.

[0032] As attached Figure 4 Appendix Figure 6 As shown, the torque support arm 12 and the force sensor 14, and the torque support arm 113 and the force sensor 14 are all connected by bolts 17.

[0033] In practical implementation, the main lubrication structure of this intelligent reducer adopts the existing reducer lubrication system. Specifically, lubricating oil is contained within the housing, and an oil scraper 18, which mates with the intermediate gear shaft 6, is fixed to the inner wall of the housing. A lubricating oil groove 19 is provided on the mating surface of the housing to receive the oil scraper 18. The oil scraped from the intermediate gear 22 by the oil scraper 18 is fed into the lubricating oil groove 19, and the lubricating oil flows along the lubricating oil groove 19 into the bearings at each shaft end, thus achieving bearing lubrication. The design ensures lubrication. This intelligent reducer has the same appearance as existing reducers, except that it does not require a larger pulley, and the mounting foot dimensions are consistent. There are three planetary gears 8. Bearing covers connected to the housing are provided at both ends of the intermediate gear shaft 6.

Claims

1. An intelligent speed reducer, comprising a housing, an input shaft (1), and an output shaft (2); characterized in that: The housing includes a housing base (3) and a housing cover (4). The input shaft (1) and the output shaft (2) are rotatably supported between the housing base (3) and the housing cover (4) via bearings (20). The housing base (3) and the housing cover (4) are also rotatably connected via bearing I (21) to a brake gear shaft (5) located behind the input shaft (1) and placed coaxially with it, and an intermediate gear shaft (6) located between the input shaft (1) and the output shaft (2). A planetary gear mechanism consisting of a sun gear (7), planet gears (8), a planet carrier (9) and an internal gear ring (10) is provided between the input shaft (1) and the brake gear shaft (5). The sun gear (7) is fixedly fitted to the input shaft (1). The end of the brake gear shaft (5) is fixedly connected to the planet carrier (9). An output shaft gear (11) is fixedly mounted on the output shaft (2), and the intermediate gear shaft (6) meshes with the output shaft gear (11). An intermediate gear (22) meshing with the brake gear shaft (5) is fixedly mounted on the intermediate gear shaft (6). An external torque support arm (12) is fixed to the outside of the internal gear ring (10), and an internal torque support arm I (13) is fixed to the inner wall of the box. A force sensor (14) is provided between the torque support arm (12) and the torque support arm I (13), and the force-bearing surface of the force sensor (14) is in contact with the surface of the torque support arm (12). The torque support arm I (13) is fixedly connected to the box base (3) or the box cover (4); the force sensor (14) has a sensor connection line (15) fixedly connected to its side perpendicular to the force surface, and the other end of the sensor connection line (15) passes through the box cover (4). The gears of the intermediate gear shaft (6) and the output shaft gear (11) are both herringbone double circular arc gears.

2. The intelligent speed reducer according to claim 1, characterized in that: An upper-facing auxiliary lubricating oil sump (16) is fixed on the internal gear ring (10), and the bottom of the planetary gear (8) located below extends into the interior of the auxiliary lubricating oil sump (16).

3. The intelligent speed reducer according to claim 1, characterized in that: The force sensor (14) is a weighing sensor.

4. The intelligent speed reducer according to claim 1, characterized in that: The torque support arm (12) and the force sensor (14), and the torque support arm I (13) and the force sensor (14) are all connected by bolts (17).

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