Gear motor and electric valve

Abstract

The utility model discloses a gear motor, and aims to solve the technical problem that manual control cannot be realized in the prior art. The speed reduction motor comprises a speed reduction motor shell, a mounting frame, a power mechanism and a speed reduction gear set. The reduction gear set comprises a fixed gear set, a separation gear set and an output shaft, a power transmission line of the reduction gear set can be disconnected through the clutch gear set, the problem that in the prior art, manual control cannot be achieved is effectively solved, the clutch gear set is arranged on the upper level of the output shaft, and therefore manual control can be achieved. The effect of easily rotating the manual handle is achieved. The manual control rod is additionally arranged on the gear motor, the problem that in the prior art, force for rotating a handle of a large-diameter valve is too large is effectively solved, and the purpose of easily adjusting the opening degree of the valve is achieved. A valve opening pointer is further installed on the output shaft of the gear motor, the problem that the opening of the electric valve cannot be displayed in the prior art is effectively solved, and the purpose of visualizing the opening of the valve is achieved.

Description

Technical Field

[0001] This utility model relates to the field of geared motor technology, specifically to a geared motor and an electric valve. Background Technology

[0002] In modern agriculture, scientific irrigation is key to achieving efficient agriculture and sustainable development. Among the methods, precise automatic irrigation using electric valves to control water flow is highly favored by farmers and agricultural experts. This method significantly improves irrigation efficiency, conserves water resources, and reduces manual operation costs. However, in practice, unforeseen circumstances may necessitate manual control of the valves. Existing electric valves generally lack manual operation capabilities, leading to delays in irrigation or over-irrigation. Therefore, an electric valve compatible with manual operation is needed, making the compatibility of the geared motor within it paramount.

[0003] The inventors know of a clutch reduction device for a geared motor (CN 214590987 U), which includes a motor, a housing and a gear set. By adding a clutch gear to the gear set, the engagement and disengagement of the motor gear set are controlled, thereby achieving the effect of controlling whether the motor input shaft and the gear set output shaft are transmitted, and thus realizing the function of switching between manual and automatic modes.

[0004] However, in the process of implementing the technical solutions in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems:

[0005] First, the geared motor has a low number of transmission stages, resulting in a low output torque. Second, there are other shafts between the clutch gear and the output shaft of the geared motor, which requires considerable force to operate the manual handle on the output shaft. Third, the geared motor can only be manually operated via the manual handle at the output end. Since the geared motor uses a reduction gear set, and the output shaft of the reduction gear set has the highest torque, turning the valve here requires more force than turning the valve near the input end of the reduction gear set. When encountering a large-diameter, high-resistance valve body, it may be impossible to turn it. Finally, the geared motor cannot display the opening degree of the electric valve.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] In view of at least one of the above technical problems, this disclosure provides a geared motor in which the device is controlled to be manually or automatically adjusted by adjusting the position of the speed-changing gear in a multi-stage reduction gear.

[0008] To achieve the above objectives, this disclosure provides the following technical solution:

[0009] Design a geared motor, including a housing, a mounting bracket installed inside the housing, a power mechanism fixed on the mounting bracket, and a reduction gear set installed inside the mounting bracket. The reduction gear set includes a fixed gear set, a release gear set, and an output shaft. The fixed gear set includes a gear shaft and a double gear fixed on the gear shaft. A manual control lever for manually driving the reduction gear set to rotate is installed on the gear shaft corresponding to the side of the fixed gear set near the power mechanism. The release gear set includes a drive shaft, a power release double gear installed on the drive shaft, and a release spring passing through the drive shaft and located below the power release double gear. A release pressure rod is installed above the power release double gear, and the release pressure rod is used to drive the power release double gear to move axially along the drive shaft to cut off the transmission of the reduction gear set.

[0010] In some embodiments of this disclosure, the output shaft includes a gear shaft, a large reduction gear connected to the gear shaft, and a valve opening pointer mounted on the upper end of the gear set.

[0011] In some embodiments of this disclosure, the power mechanism includes a motor, a motor output shaft, and a gear mounted on the motor output shaft.

[0012] In some embodiments of this disclosure, the mounting bracket includes a first mounting plate, a second mounting plate, and a positioning plate between the two mounting plates, with the three plates fixed in parallel by fixing rods.

[0013] Another aspect of this disclosure provides an electric valve comprising the aforementioned geared motor.

[0014] One or more technical solutions provided in the embodiments of this application have at least one of the following technical effects or advantages:

[0015] 1. A multi-stage speed change structure is adopted, which effectively solves the technical problem of low torque in the existing technology, thereby meeting the needs of high load.

[0016] 2. The designed clutch gear set is effectively compatible with manual operation, and by placing the clutch gear set one level above the output shaft, it achieves the effect of easily turning the manual handle.

[0017] 3. By adding a manual control lever to increase the output torque, the problem of excessive force required to turn the handle for large-diameter valves in existing technologies is effectively solved, achieving the goal of easily adjusting the valve opening.

[0018] 4. By adding a valve opening indicator, the problem that the opening degree of electric valves cannot be displayed in the existing technology is effectively solved, and the purpose of visualizing the valve opening degree is achieved. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the electric valve in one embodiment of the present disclosure.

[0020] Figure 2 This is a schematic diagram of the internal structure of a geared motor in one embodiment of the present disclosure.

[0021] Figure 3 This is a schematic diagram of a reduction gear set of a geared motor in one embodiment of the present disclosure.

[0022] In the above figures, 1 represents the geared motor, 11 represents the housing; 12 represents the mounting bracket, 121 represents the first mounting plate, 122 represents the positioning plate, 123 represents the second mounting plate, and 124 represents the fixing rod; 13 represents the power mechanism, 131 represents the motor, 132 represents the motor output shaft, 133 represents the motor gear, and 14 represents the reduction gear set. 141 is drive shaft A, 1411 is the first drive shaft, 1412 is the first double gear, 142 is drive shaft B, 1421 is the second drive shaft, 1422 is the second double gear, 143 is drive shaft C, 1431 is the third drive shaft, 1432 is the third double gear, 144 is separation shaft A, 1441 is the first separation shaft, 1442 is the first power separation double gear, 1443 is the first separation spring, 1444 is the first separation lever, 145 is drive shaft D, 1451 is the fourth drive shaft, 1452 is the fourth double gear, 1453 is the manual control lever, 146 is separation shaft B, 1461 is the second separation shaft, 1462 is the second power separation double gear, 1463 is the second separation spring, 1464 is the second separation lever, and 147 is the output shaft of the geared motor. 1471 is the output shaft, 1472 is the large reduction gear, 1473 is the valve opening pointer; 2 is the valve body; 3 is the sensor module; 4 is the control handle. Detailed Implementation

[0023] In the description of this disclosure, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. The terms "first," "second," etc., used in this disclosure are used to distinguish the described objects and do not have any sequential or technical meaning. And the terms "connection" and "linkage," unless otherwise specified, include both direct and indirect connections (linkages).

[0024] Unless otherwise specified, the unit modules (components, structures, mechanisms) or sensors involved in the following embodiments are all conventional commercially available products.

[0025] This disclosure provides a geared motor that solves the problem of electric valves being unable to be manually controlled in the prior art. By adding a separation gear set to the motor's reduction gear set, the electric valve can be switched to manual control.

[0026] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0027] By adding a separation gear set within the reduction gear set, the power transmission from the power mechanism to the output shaft can be cut off when necessary. Since the separation gear is close to the output shaft, most transmission components are not driven, making the operation of the control handle easier. Simultaneously, a manual control lever is installed on the fixed gear set near the power mechanism, allowing for the adjustment of large-diameter valves with minimal force. A valve opening indicator is installed on the output shaft of the geared motor, providing a visual display of the valve opening.

[0028] To better understand the technical solutions disclosed herein, the above technical solutions will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] This example discloses a geared motor; see [link / reference]. Figure 1-3Specifically, it includes a geared motor housing 11, within which a mounting bracket 12 provides support for components. The mounting bracket 12 consists of three layers: a first mounting plate 121, a second mounting plate 123, and a positioning plate 122 between the two mounting plates. These three plates are connected and fixed in parallel by a fixing rod 124. A power unit 13 is fixed on top of the first mounting plate 121. The motor 131 of the power unit 13 is mounted on the first mounting plate 121, and the motor output shaft 132 passes through the first mounting plate 121. A reduction gear set is connected between the first mounting plate 121 and the positioning plate 122 via a motor gear 133.

[0031] The drive shafts of the reduction gear sets all pass through the positioning plate 122 and are installed between the first mounting plate 121 and the second mounting plate 123. The fixed gear set consists of drive shafts A141, B142, C143, and D145, each including its own drive shaft and a double gear fixed on the drive shaft. The shaft end of drive shaft D145 is also equipped with a manual adjustment lever 1453. The separation gear set includes separation shafts A144 and B146, each including a separation shaft, a power separation double gear connected to the separation shaft, a separation pressure rod installed above the power separation double gear, and a separation spring passing through the separation shaft and located below the power separation double gear. The separation pressure rod is limited above the power separation double gear by the first mounting plate and the positioning plate, and it is not welded to the power separation double gear. The output shaft 131 of the power mechanism 13 transmits power to the reduction gear set through the transmission shaft A141. The power is then transmitted sequentially to the transmission shaft B142, transmission shaft C143, separation shaft A144, transmission shaft D145, separation shaft B146 and the output shaft 147 of the reduction motor. After that, the power is transmitted to the valve and regulates the opening and closing of the valve.

[0032] During operation, the motor gear 133 of the power mechanism 13 inputs power into the reduction gear set through the large gear of the first double gear 1412 on the transmission shaft A141, causing the first double gear 1412 to rotate. Then, the small gear of the first double gear 1412 drives the large gear of the second double gear 1422 on the second transmission shaft 1421 to rotate. At the same time, the small gear of the second double gear 1422 drives the large gear of the third double gear 1432, causing the third transmission shaft 1431 to rotate. The small gear of the third double gear 1432 drives the first power separation double gear 1442 on the first separation shaft 1441 to rotate. However, the power separation double gear slides with its separation shaft and does not drive the separation shaft to rotate. The power exits from the small gear of the first power separation double gear 1442 and then passes through the large and small gears of the fourth double gear 1452, transmitting the power to the small gear of the second power separation double gear 1462 on the second separation shaft 1461. Finally, the power is transmitted from the large gear of the second power separation double gear 1462 to the large reduction gear 1472, driving the output shaft 147 of the reduction motor to rotate. The power transmission in the reduction motor ends. The lower end of the output shaft 147 of the reduction motor is connected to the valve switch, and the upper end is fixed with a valve opening pointer 1473, which can accurately display the valve opening size.

[0033] When manual control is required, press the second separation lever 1464. The second separation lever 1464 presses down the second power separation double gear 1462, disconnecting the power transmission of the reduction gear set. At this time, the control handle 4 is only connected to the output shaft. Moving the control handle 4 will open and close the valve connected to the control handle 4. Since the entire reduction gear set is not rotated together, it is easier to move the handle at this time. When electric control is required, release the second separation lever 1464. Under the elastic force of the second separation spring 1463, the second power separation double gear 1462 returns to its original position, and the power transmission of the reduction gear set is restored.

[0034] Compared to the control handle 4, the drive shaft D145 is positioned closer to the input end of the reduction gear set. Since the geared motor uses a reduction gear set, and the function of the reduction gear set is to reduce speed and increase torque, a smaller force is needed at the input end of the reduction gear set to output a larger torque. Therefore, when encountering a large-diameter valve, rotating the manual control lever 1453 mounted on the drive shaft D145 (which can press down the first separation lever 1444, or leave it unpressed; the difference is that leaving it unpressed will cause the gear closer to the input shaft to rotate, requiring slightly more effort) Figure 1 The version used does not press down the first separation lever 1444. It will drive the drive shaft D145 and the reduction gear set to rotate. When the power is transmitted to the output shaft, the torque reaches its maximum, thereby controlling the valve rotation with a smaller force, thus adjusting the valve opening.

[0035] Although some preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from the spirit and scope of its technical concept. Therefore, if these modifications and variations of this disclosure fall within the scope of the claims of this application and their equivalents, the scope of protection of this disclosure is also intended to include these modifications and variations.

Claims

1. A reduction motor comprising a housing, a mounting frame mounted in said housing, a power mechanism fixed to said mounting frame, and a reduction gear set mounted in said mounting frame, characterized in that, The reduction gear set comprises a fixed gear set, a separation gear set and an output shaft; the fixed gear set comprises a gear shaft and a double gear fixed on the gear shaft; a manual control rod is installed on the corresponding gear shaft of the fixed gear set near the power mechanism to manually drive the rotation of the reduction gear set; the separation gear set comprises a transmission shaft, a power separation double gear installed on the transmission shaft, a separation spring penetrating through the transmission shaft and located below the power separation double gear; a separation pressure rod is installed above the power separation double gear to drive the power separation double gear to move along the axial direction of the transmission shaft to cut off the transmission of the reduction gear set.

2. The reduction gear motor according to claim 1, characterized by The output shaft comprises a gear shaft, a large reduction gear connected to the gear shaft and a valve opening pointer installed on the upper end of the gear set.

3. The reduction gear motor according to claim 1, characterized by The power mechanism comprises a motor, a motor output shaft and a gear installed on the motor output shaft.

4. The reduction gear motor according to claim 1, characterized by The mounting frame comprises a first mounting plate, a second mounting plate and a positioning plate between the two mounting plates, and the three plates are fixed in parallel through fixing rods.

5. An electrically powered valve characterised in that: The reduction motor comprises the reduction gear set.

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