An electric drive device for adjusting the blade angle of a vertical shaft tubular pump

Abstract

The present invention discloses an electric drive device for adjusting the blade angle of a vertical shaft through-flow pump, comprising: a drive motor, a control box electrically connected to the drive motor, the control box comprising a motor control circuit and a time relay, the time relay being used to set the operating time of the drive motor, a universal joint coupling, one end of which is connected to the drive end of the drive motor, and the other end of which is connected to the worm gear pair of the vertical shaft through-flow pump via a connecting rod. The power of the device comes from the drive motor, and then the torque is transmitted through the universal joint coupling to rotate the worm gear pair. The device is easy to use and simple to operate, and can be applied to a blade adjustment mechanism with an uncertain power input end position.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric drive devices for adjusting the blade angle of a shaft throughflow pump, and more particularly, relates to an electric drive device for adjusting the blade angle of a shaft throughflow pump. Background Art

[0002] The shaft cross-flow pump unit uses a mechanical manual adjustment device to adjust the pump blade angle. The blade adjustment mechanism of the shaft cross-flow pump unit is arranged at the connection between the end of the pump main shaft and the low-speed shaft of the gearbox. When the water pump is in operation, the adjustment mechanism rotates with the main shaft. When the water pump needs to adjust the blade angle, the water pump must be stopped. The worm gear pair (the blade adjustment power input end) must be rotated by the crank handle. The trapezoidal thread pair between the worm gear and the operating lever is then rotated to achieve the forward and backward movement of the operating lever, driving the connecting rod mechanism in the runner component to realize the rotation of the blade around the pivot, thereby achieving the purpose of adjusting the blade angle to change in the positive or negative direction. The traditional manual method of adjusting the blade angle is time-consuming and laborious. The staff must constantly observe the blade angle indicator while shaking the crank until the blade angle reaches the target value. When the blade angle indicator is in the low position, it is difficult to observe for a long time. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies in the prior art and provide an electric drive device for adjusting the blade angle of a vertical shaft through-flow pump. The power of the device comes from a drive motor. The motor body is decelerated by a planetary gearbox and then transmits torque through a universal joint coupling to rotate a worm gear pair. The device is easy to use and simple to operate, and can be applied to blade adjustment mechanisms with uncertain power input end positions.

[0004] In order to achieve the above object, the present invention provides an electric drive device for adjusting the blade angle of a vertical shaft throughflow pump, comprising:

[0005] Drive motor;

[0006] A control box electrically connected to the drive motor, the control box including a motor control circuit and a time relay, the time relay being used to set the operating time of the drive motor;

[0007] One end of the universal joint coupling is connected to the driving end of the driving motor, and the other end is connected to the worm gear pair of the shaft tubular pump through a connecting rod.

[0008] Optionally, the drive motor includes a motor body and a planetary gearbox, the drive end of the motor body is connected to the input end of the planetary gearbox, and the output end of the planetary gearbox is connected to the universal joint coupling.

[0009] Optionally, the universal joint coupling is a double-section telescopic cross universal joint coupling, including a telescopic rod, a first rod and a second rod, the two ends of the telescopic rod are respectively rotatably connected to the first rod and the second rod, the first rod is connected to the driving end of the drive motor, and the second rod is connected to the turbine worm pair through the connecting rod.

[0010] Optionally, the control box further includes a forward and reverse switching button, a start button and a power button.

[0011] Optionally, a lifting platform vehicle is further included, on which an electric drive device for adjusting the blade angle of the shaft throughflow pump is arranged, and the lifting platform vehicle includes:

[0012] A base plate, wherein a universal wheel is provided on the lower side of the base plate, and a scissor-type lifting platform is provided on the upper side of the base plate;

[0013] an armrest, arranged at one end of the base plate;

[0014] The foot-operated hydraulic jack body is arranged on the base plate, the driving end of the foot-operated hydraulic jack body is connected to the scissor structure of the scissor-type lifting platform, and the pedal of the foot-operated hydraulic jack body is located at one end of the base plate close to the handrail.

[0015] Optionally, the universal wheel is provided with a locking structure.

[0016] Optionally, the connecting rod is detachably connected to the universal joint coupling, a slot is provided at one end of the universal joint coupling close to the connecting rod, and a block matching the slot is provided on the connecting rod.

[0017] Optionally, the pressure relief valve of the foot-operated hydraulic jack body is provided on the armrest.

[0018] Optionally, a speed sensor is further included, which is arranged at the driving end of the driving motor. The control box also includes an electronic angle display meter, and the speed sensor is electrically connected to the electronic angle display meter through the motor control circuit.

[0019] Optionally, the control box further includes a motor protector.

[0020] The present invention provides an electric drive device for adjusting the blade angle of a vertical shaft throughflow pump, which has the following beneficial effects:

[0021] 1. The power of the device comes from the drive motor, which then transmits torque through the universal joint coupling to rotate the worm gear pair. It is easy to use and simple to operate, and can be applied to blade adjustment mechanisms with uncertain power input end positions.

[0022] 2. The device is equipped with a time relay that can set the operating time. The blade angle of the shaft tubular pump unit can be accurately adjusted according to the motor main body speed, transmission ratio and operating time settings;

[0023] 3. The device has a rotation speed sensor and can accurately adjust the blade angle of the shaft tubular pump unit according to the number of revolutions of the drive motor and the transmission ratio. In conjunction with the adjustment method of the above-mentioned time relay, it can also verify the adjustment accuracy;

[0024] 4. The device is equipped with a lifting platform car, which can be used to move and adjust the device, making it more convenient and labor-saving to use.

[0025] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0027] Figure 1 A schematic structural diagram of an electric drive device for adjusting the blade angle of a shaft throughflow pump according to an embodiment of the present invention is shown.

[0028] Figure 2 A schematic diagram of the use of an electric drive device for adjusting the blade angle of a shaft throughflow pump according to an embodiment of the present invention is shown.

[0029] Figure 3 A schematic diagram of the use of an electric drive device for adjusting the blade angle of a shaft throughflow pump according to an embodiment of the present invention is shown.

[0030] Figure 4 A schematic diagram of the use of an electric drive device for adjusting the blade angle of a shaft throughflow pump according to an embodiment of the present invention is shown.

[0031] Description of reference numerals:

[0032] 1. Lifting platform vehicle; 1.1. Bottom plate; 1.2. Universal wheel; 1.3. Scissor lift platform; 1.4. Handrail; 1.5. Foot-operated hydraulic jack body; 1.6. Pedal; 1.7. Pressure relief valve; 2. Drive motor; 3. Universal joint coupling; 3.1. First rod; 3.2. Second rod; 3.3. Telescopic rod; 4. Speed ​​sensor; 5. Connecting rod; 6. Control box. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0034] Figure 1 A schematic structural diagram of an electric drive device for adjusting the blade angle of a shaft throughflow pump according to one embodiment of the present invention is shown; Figure 2 A schematic diagram showing the use of an electric drive device for adjusting the blade angle of a shaft throughflow pump according to one embodiment of the present invention is shown; Figure 3 A schematic diagram showing the use of an electric drive device for adjusting the blade angle of a shaft throughflow pump according to one embodiment of the present invention is shown; Figure 4 A schematic diagram of the use of an electric drive device for adjusting the blade angle of a shaft throughflow pump according to an embodiment of the present invention is shown.

[0035] like Figure 1-4 As shown, an electric drive device for adjusting the blade angle of a vertical shaft throughflow pump comprises:

[0036] Drive motor 2;

[0037] A control box 6 is electrically connected to the drive motor 2 and includes a motor control circuit and a time relay. The time relay is used to set the operating time of the drive motor 2.

[0038] One end of the universal joint coupling 3 is connected to the driving end of the driving motor 2, and the other end is connected to the worm gear pair of the shaft through the connecting rod 5.

[0039] Specifically, the drive motor 2 is controlled by the control box 6, and the starting rotation time of the drive motor 2 is determined by setting the duration through the time relay. The drive motor 2 rotates to provide power, and the power is transmitted to the connecting rod 5 through the universal joint coupling 3. The universal joint coupling 3 can freely adjust the spatial shape to adapt to the worm gear pair of different angles and the connecting rod 5. The worm gear pair is driven to rotate by the connecting rod 5, so that the blade rotates around the pivot, thereby achieving the purpose of adjusting the blade angle to the positive and negative directions. It is easy to use and simple to operate, and is suitable for blade adjustment mechanisms with uncertain power input end positions.

[0040] Furthermore, when the blade angle is adjusted from 0 degrees to 8 degrees, it takes 80 seconds. The setting time of 10 seconds adjusts the blade angle by 1 degree. By observing the blade angle indicator, it is calculated that the angle value that needs to be rotated is increased by 10 times, which is the setting time of the time relay.

[0041] In this embodiment, the driving motor 2 includes a motor body and a planetary gearbox. The driving end of the motor body is connected to the input end of the planetary gearbox, and the output end of the planetary gearbox is connected to the universal joint coupling 3.

[0042] Specifically, the motor body provides power, and the planetary gearbox is used to reduce the speed and increase the torque of the connecting rod 5 , thereby reducing the rotation speed of the connecting rod 5 and increasing the torque of the connecting rod 5 .

[0043] In this embodiment, the universal joint coupling 3 is a double-section telescopic cross universal joint coupling, including a telescopic rod 3.3, a first rod 3.1 and a second rod 3.2. The two ends of the telescopic rod 3.3 are respectively rotatably connected to the first rod 3.1 and the second rod 3.2. The first rod 3.1 is connected to the driving end of the drive motor 2, and the second rod 3.2 is connected to the turbine worm pair through the connecting rod 5.

[0044] Specifically, power is transmitted through the first rod 3.1 connected to the driving end of the drive motor 2, and the telescopic rod 3.3 cooperates with the first rod 3.1 and the second rod 3.2 to adapt to connections of different distances and angles. The driving force is transmitted to the turbine worm pair through the second rod 3.2, thereby adjusting the angle of the through-flow pump blades.

[0045] In this embodiment, the control box 6 further includes a forward and reverse switching button, a start button and a power button.

[0046] Specifically, the forward and reverse rotation of the drive motor 2 is switched by the switch button, the drive motor 2 is started by the start button, and automatically stops according to the preset time, the drive motor 2 is powered by the power button, and at the same time, if the drive motor 2 fails, it is stopped urgently by the power button.

[0047] In this embodiment, a lifting platform vehicle 1 is further included. An electric drive device for adjusting the blade angle of the shaft throughflow pump is provided on the lifting platform vehicle 1. The lifting platform vehicle 1 includes:

[0048] Base plate 1.1, universal wheels 1.2 are provided on the lower side of base plate 1.1, and a scissor-type lifting platform is provided on the upper side of base plate 1.1;

[0049] an armrest 1.4, provided at one end of the base plate 1.1;

[0050] The foot-operated hydraulic jack body 1.5 is arranged on the base plate 1.1, the driving end of the foot-operated hydraulic jack body 1.5 is connected to the scissor structure of the scissor-type lifting platform 1.3, and the pedal 1.6 of the foot-operated hydraulic jack body 1.5 is located at one end of the base plate 1.1 near the handrail 1.4.

[0051] Specifically, the electric drive device is conveniently moved by the lifting platform vehicle 1, thereby further reducing the labor intensity of the user. The scissor-type lifting platform is supported by the base plate 1.1, and the base plate 1.1 is pushed by the handrail 1.4 to move the base plate 1.1 through the universal wheel 1.2. When in use, the pedal 1.6 of the foot-operated hydraulic jack body 1.5 is stepped on to extend the foot-operated hydraulic jack body 1.5, thereby lifting the scissor-type lifting platform.

[0052] In this embodiment, the universal wheel 1.2 is provided with a locking structure.

[0053] Specifically, the universal wheel 1.2 locking device facilitates the stopping and fixing of the lifting platform vehicle 1, thereby preventing the lifting platform vehicle 1 from being displaced when it stops.

[0054] Furthermore, the locking structure is a foot-operated brake mechanism.

[0055] In this embodiment, the connecting rod 5 is detachably connected to the universal joint coupling 3 , and a clamping groove is provided at one end of the universal joint coupling 3 close to the connecting rod 5 , and a clamping block matching the clamping groove is provided on the connecting rod 5 .

[0056] Specifically, the connection rods 5 of different types can be replaced conveniently by cooperating with the card slot and the card block, so as to adjust the cross-flow pumps of different types and sizes.

[0057] In this embodiment, the pressure relief valve 1.7 of the foot-operated hydraulic jack body 1.5 is provided on the handrail 1.4.

[0058] Specifically, by arranging the pressure relief valve 1.7 on the handrail 1.4, the pressure relief of the foot-operated hydraulic jack body 1.5 can be conveniently controlled, and the use is simple and quick.

[0059] In this embodiment, a rotation speed sensor 4 is further included. The rotation speed sensor 4 is arranged at the driving end of the driving motor 2. The control box 6 also includes an electronic angle display meter. The rotation speed sensor 4 is electrically connected to the electronic angle display meter through a motor control circuit.

[0060] Specifically, the speed sensor 4 monitors the rotation of the drive motor 2 in real time, and converts the signal measured by the speed sensor 4 into the blade rotation angle through linear calculation of the motor control loop and displays it on the electronic angle display to confirm the rotation angle, making it convenient for staff to check the specific effective rotation angle.

[0061] Furthermore, the electronic angle display table can display positive angles and negative angles, corresponding to the forward and reverse rotation of the drive motor 2. By corresponding the positive and negative angles to the forward and reverse rotation of the drive motor 2, it is convenient to judge the rotation direction.

[0062] In this embodiment, the control box 6 further includes a motor protector.

[0063] Specifically, the motor protector is used to protect the drive motor 2 to prevent the drive motor 2 from starting in a phase-loss state.

[0064] When the electric drive device of this embodiment is used, taking the adjustment of the blade angle of the through-flow pump as an example, the blade angle indicator is first observed during use to calculate the angle required to rotate and the motor rotation time. Then, the driving motor 2 and the control box 6 are moved by the lifting platform vehicle 1, and the forward, reverse and stop of the driving motor 2 are controlled by the control box 6. Then, the driving motor 2 drives the connecting rod 5 through the universal joint coupling 3 to drive the worm gear pair to rotate, so that the blade rotates around the pivot, thereby achieving the purpose of adjusting the blade angle to the positive and negative directions. At the same time, the speed sensor 4 monitors the driving motor 2 in real time, and converts the signal measured by the speed sensor 4 into the blade rotation angle through the linear calculation of the motor control loop and displays it on the electronic angle display.

[0065] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An electric drive device for adjusting the blade angle of a vertical shaft throughflow pump, characterized in that: include: Drive motor; A control box electrically connected to the drive motor, the control box including a motor control circuit and a time relay, the time relay being used to set the operating time of the drive motor; A universal joint coupling, one end of which is connected to the driving end of the drive motor, and the other end of which is connected to the worm gear pair of the shaft tubular pump via a connecting rod; Also included is a lifting platform vehicle, the lifting platform vehicle comprising: A base plate, wherein a universal wheel is provided on the lower side of the base plate, a scissor-type lifting platform is provided on the upper side of the base plate, and the control box and the drive motor are provided on the scissor-type lifting platform; an armrest, arranged at one end of the base plate; A foot-operated hydraulic jack body is disposed on the base plate, a driving end of the foot-operated hydraulic jack body is connected to the scissor structure of the scissor-type lifting platform, and a pedal of the foot-operated hydraulic jack body is located at one end of the base plate near the handrail; It also includes a speed sensor, which is arranged at the driving end of the driving motor. The control box also includes an electronic angle display meter, and the speed sensor is electrically connected to the electronic angle display meter through the motor control circuit.

2. The electric drive device for adjusting the blade angle of a shaft throughflow pump according to claim 1, characterized in that: The driving motor includes a motor body and a planetary gearbox, the driving end of the motor body is connected to the input end of the planetary gearbox, and the output end of the planetary gearbox is connected to the universal joint coupling.

3. The electric drive device for adjusting the blade angle of a shaft throughflow pump according to claim 1, characterized in that: The universal joint coupling is a double-section telescopic cross universal joint coupling, which includes a telescopic rod, a first rod and a second rod. The two ends of the telescopic rod are respectively rotatably connected to the first rod and the second rod. The first rod is connected to the driving end of the drive motor, and the second rod is connected to the worm gear pair through the connecting rod.

4. The electric drive device for adjusting the blade angle of a shaft throughflow pump according to claim 1, characterized in that: The control box also includes a forward and reverse switching button, a start button and a power button.

5. The electric drive device for adjusting the blade angle of a shaft throughflow pump according to claim 1, characterized in that: The universal wheel is provided with a locking structure.

6. The electric drive device for adjusting the blade angle of a shaft throughflow pump according to claim 1, characterized in that: The connecting rod is detachably connected to the universal joint coupling. A clamping groove is provided at one end of the universal joint coupling close to the connecting rod. A clamping block matching the clamping groove is provided on the connecting rod.

7. The electric drive device for adjusting the blade angle of a shaft throughflow pump according to claim 1, characterized in that: The pressure relief valve of the foot-operated hydraulic jack body is arranged on the handrail.

8. The electric drive device for adjusting the blade angle of a shaft throughflow pump according to claim 1, characterized in that: The control box also includes a motor protector.

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