Auxiliary starting equipment for large motors

Abstract

The present invention provides an auxiliary starting device for a large motor, which includes a casing, a stator, a rotor, a tail casing, a driving device, and a connecting device. End covers are fixedly provided at both ends of the casing. The stator is fixedly provided in the casing. The rotor is rotatably provided in the stator, with both ends extending out of the end covers. The tail casing is fixedly provided on one of the end covers. The driving device is fixedly provided at the end of the tail casing away from the casing. The driving device is fixedly connected to the end of the rotor extending out of the end cover. The driving device drives the rotor to rotate. The connecting device is used to connect the rotor and the driving device. The driving device drives the rotor to rotate through the connecting device. The auxiliary starting device for a large motor described in the present invention ensures that the motor can be auxiliary driven by the setting of the driving device before being energized, reducing current transmission and saving energy. The setting of the connecting device ensures that the driving device and the motor are separated after the motor is working, avoiding the motor driving the driving device to rotate and causing unnecessary energy waste.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary power motors, and in particular to an auxiliary starting device for a large motor. Background Art

[0002] Large motors possess powerful output power, capable of driving a wide range of heavy equipment and machinery. Industries such as electricity, metallurgy, chemicals, petroleum, mining, and shipbuilding all rely on large motors to provide the necessary power. Therefore, starting a motor is a primary concern. This is because starting a high-power motor directly with current can cause a significant voltage drop in the line, significantly impacting the power grid, the motor, and potentially damaging the equipment itself.

[0003] Existing motors can waste significant amounts of energy during startup and operation. Because the motors are too large, the starting current can be excessive, increasing the equipment's energy consumption and reducing energy efficiency. Excessive motor current can also overload the electrical equipment and potentially cause circuit overheating. Prolonged overheating can cause fires, posing a threat to equipment and personnel safety. Current motor-assisted starting methods typically use a reduced current to start the motor, but this method can easily cause the motor to start too slowly, preventing the equipment from reaching its operating speed. Furthermore, it still consumes significant energy, increasing electricity costs. Summary of the Invention

[0004] The purpose of the present invention is to provide an auxiliary starting device for a large motor, so as to solve the problem that the existing large motor is prone to energy waste and danger during starting.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] An auxiliary starting device for a large motor, comprising:

[0007] A casing, with end covers fixedly provided at both ends of the casing; a stator and a rotor, wherein the stator is fixedly provided in the casing, and the rotor is rotatably provided in the stator, with both ends extending out of the end covers; a tail casing, fixedly provided on one of the end covers; a driving device, fixedly provided on an end of the tail casing away from the casing, the driving device and the end of the rotor extending out of the end cover are fixedly connected, and the driving device drives the rotor to rotate; a connecting device, used to connect the rotor and the driving device, and the driving device drives the rotor to rotate through the connecting device.

[0008] Furthermore, the driving device includes a warehouse body fixedly arranged on the tail shell, a cylinder body rotatably arranged in the warehouse body, and a plunger slidably arranged in the cylinder body. The warehouse body is provided with a liquid inlet and a liquid outlet connected to the cylinder body. A drive shaft extends out of the warehouse body from the side of the cylinder body away from the plunger, and the drive shaft is clamped with the connecting device.

[0009] Furthermore, the cylinder body is provided with a plurality of through holes along the axial circumference, the plurality of through holes being connected to the liquid inlet and the liquid outlet respectively, and the number of the plungers is the same as the number of the through holes, and the plungers are inserted into each of the through holes;

[0010] And / or, a core body is further provided in the warehouse body, each of the plungers and the core body abut against each other, and the core body is arranged to be inclined relative to the axial direction of the cylinder body.

[0011] Furthermore, a fixing block is fixedly provided on the core body, a spherical groove is provided on the fixing block, a spherical body is provided on the end of the plunger away from the through hole, and the spherical body is arranged in the spherical groove;

[0012] A bearing is fixedly arranged on the core body, a disc is fixedly arranged on the bearing, and the fixing block is fixedly arranged on the disc.

[0013] Furthermore, an adjusting member for adjusting the inclination angle of the core body is provided in the warehouse body, a spherical body identical to the plunger is provided on the core body, a cylindrical groove is provided on the adjusting member, the spherical body is provided in the cylindrical groove, an annular groove is provided on the warehouse body, and rotating rods are provided on both sides of the core body extending into the annular groove.

[0014] Furthermore, the adjusting member includes a cylindrical groove opened on the silo body, an adjusting shaft slidably arranged in the cylindrical groove, and a bolt rotatably arranged at the bottom end of the adjusting shaft, and the bolt is threadedly connected to the silo body.

[0015] Furthermore, the connecting device includes a follower plate fixedly provided on the driving shaft, a follower drum fixedly provided on the rotor, and an abutment piece rotatably provided on the follower plate, wherein the abutment piece abuts against the follower drum.

[0016] Furthermore, the connecting device also includes a driving member for driving the abutment plate to rotate, the driving member is sleeved on the driving shaft, and the driving member is driven by a hydraulic cylinder.

[0017] Furthermore, the driving member includes an annular sleeve slidably arranged on the driving shaft, an L-shaped rod rotatably arranged on the follower plate, and an elliptical ring rotatably arranged on the L-shaped rod, a connecting rod rotatably arranged on the elliptical ring, and the connecting rod and the abutment plate are rotatably connected.

[0018] Furthermore, there are two L-shaped rods, a cross rod is rotatably provided between the two L-shaped rods, the elliptical ring is rotatably connected to the cross rod, there are two abutment plates, two connecting rods are oppositely provided on the elliptical ring, and are rotatably connected to the two abutment plates respectively;

[0019] And / or, an active ring is rotatably provided on the annular sleeve, and the driving rod of the hydraulic cylinder is rotatably connected to the active ring.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The auxiliary starting device for a large motor described in the present invention ensures that the motor can be assisted in driving by setting a driving device, and then energized, thereby reducing current transmission and saving energy. By setting a connecting device, it ensures that the driving device and the motor are separated after the motor works, thereby avoiding the motor driving the driving device to rotate and causing unnecessary energy waste.

[0022] Through the coordinated setting of the cylinder body and the plunger, it is ensured that the motor can be driven by hydraulic pressure, the torque is increased, and the starting speed of the motor is accelerated. Through the setting of the core body, it is ensured that multiple plungers can reciprocate and extend to realize the rotation of the drive device. Through the setting of the adjusting part, the pressure provided by the hydraulic oil can be adjusted, so as to adapt to the auxiliary starting of motors of different sizes.

[0023] The coordinated setting of the follower drum and the abutment piece ensures that the motor and the drive device can be connected and separated, and ensures that the drive device will not affect the rotation of the motor after the motor is started. The setting of the elliptical ring ensures that the abutment piece can swing. The coordinated setting of the active ring and the annular sleeve ensures that the drive member can rotate with the follower disk and can also slide, which is convenient for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] In the attached figure:

[0026] Figure 1 This is a schematic diagram of the overall structure of the auxiliary starting device for a large motor according to an embodiment of the present invention;

[0027] Figure 2 This is an exploded schematic diagram of the tail housing and the connecting device according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection between the rotor, connecting device and driving device according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic structural diagram of a connecting device according to an embodiment of the present invention;

[0030] Figure 5 This is an exploded schematic diagram of a connecting device according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic structural diagram of a driving device according to an embodiment of the present invention;

[0032] Figure 7 This is an exploded schematic diagram of the bin body and the rotor according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the internal structure of the warehouse according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the core portion according to an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the exploded view of the core and plunger according to an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1. Casing; 2. End cover; 3. Stator; 4. Rotor; 5. Tail casing;

[0038] 6. Driving device; 601. Chamber; 602. Cylinder; 603. Plunger; 604. Liquid inlet; 605. Liquid outlet; 606. Driving shaft; 607. Through hole; 608. Core; 609. Fixing block; 610. Spherical groove; 611. Spherical body; 612. Bearing; 613. Disc;

[0039] 614, adjusting member; 6141, cylindrical groove; 6142, adjusting shaft; 6143, bolt;

[0040] 615, annular groove; 616, rotating rod; 617, barrel groove;

[0041] 7. Connecting device; 701. Follower plate; 702. Follower drum; 703. Abutment sheet;

[0042] 704, driving member; 7041, annular sleeve; 7042, L-shaped rod; 7043, elliptical ring; 7044, connecting rod; 7045, cross bar; 7046, active ring;

[0043] 705, hydraulic cylinder; 706, friction plate; 707, opening; 708, U-shaped groove; 709, center axis. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0045] In the description of the present invention, it should be noted that if terms such as "upper," "lower," "inner," and "back" appear, they are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0046] Furthermore, in the description of the present invention, unless otherwise expressly defined, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, these terms may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will appreciate the specific meanings of these terms in the present invention based on the specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0048] This embodiment relates to an auxiliary starting device for a large motor, the overall structure of which is as follows: Figure 1 and Figure 2 As shown, it includes a casing 1, a stator 3, a rotor 4, a tail casing 5, a driving device 6, and a connecting device 7.

[0049] Among them, end covers 2 are fixedly provided at both ends of the casing 1, the stator 3 is fixedly provided in the casing 1, the rotor 4 is rotatably provided in the stator 3, and both ends extend out of the end covers 2, the tail casing 5 is fixedly provided on one of the end covers 2, and the driving device 6 is fixedly provided at the end of the tail casing 5 away from the casing 1. The driving device 6 is fixedly connected to the end of the rotor 4 extending out of the end cover 2, and the driving device 6 drives the rotor 4 to rotate. The connecting device 7 is used to connect the rotor 4 and the driving device 6, and the driving device 6 drives the rotor 4 to rotate through the connecting device 7.

[0050] It is worth mentioning that the stator 3 and the rotor 4 are common parts of the motor in the prior art and are not described in detail here. The end cover 2 is divided into a front cover 2 and a rear cover 2, which are respectively fixed on both sides of the casing 1. The two ends of the rotor 4 extend out of the two end covers 2 respectively and can rotate on the end covers 2. One end of the rotor 4 is connected to the external equipment, and the other end is equipped with a connecting device 7. The connecting device 7 is located inside the tail shell 5. One end of the tail shell 5 is installed on the rear cover 2, and the other end is equipped with a driving device 6. The driving device 6 is connected to the external hydraulic station. When the hydraulic oil of the hydraulic station flows through the driving device 6, the driving device 6 is rotated.

[0051] In addition, the driving device 6 is used to drive the rotor 4 of the motor to rotate. When the rotor 4 rotates to a certain speed, the motor is energized and the rotor 4 rotates under the action of electromagnetic force. Such a setting can avoid the motor requiring a large amount of current when starting, thereby causing energy waste, reducing the service life of the equipment, and easily causing circuit burnout, resulting in unnecessary losses; in order to prevent the driving device 6 from rotating after the motor is started, a connecting device 7 is added. The connecting device 7 is located between the driving device 6 and the rotor 4 and can connect the rotor 4 and the driving device 6. When the motor is started, the connecting device 7 can separate the rotor 4 and the driving device 6, thereby ensuring that the driving device 6 will not rotate with the rotor 4, reducing the resistance to the rotation of the rotor 4.

[0052] Based on the overall introduction above, an exemplary structure of the auxiliary starting device of a large motor of this embodiment is as follows: Figure 6 and Figure 7 As shown, the driving device 6 includes a warehouse body 601 fixedly set on the tail shell 5, a cylinder body 602 rotatably set in the warehouse body 601, and a plunger 603 slidingly set in the cylinder body 602. A liquid inlet 604 and a liquid outlet 605 connected to the cylinder body 602 are provided on the warehouse body 601. A driving shaft 606 extends out of the warehouse body 601 on the side of the cylinder body 602 away from the plunger 603, and the driving shaft 606 is clamped with the connecting device 7.

[0053] It should be noted that the warehouse body 601 is fixedly mounted on the tail shell 5, and a bearing 612 is arranged between the cylinder body 602 and the warehouse body 601, so that the cylinder body 602 can rotate in the warehouse body 601, and the liquid inlet pipe and the liquid outlet pipe of the hydraulic station are respectively connected to the liquid inlet 604 and the liquid outlet 605, and the plunger 603 is driven to slide by the hydraulic oil. The plunger 603 can push the cylinder body 602 to rotate, and the drive shaft 606 is located on the central axis of the cylinder body 602. When the cylinder body 602 rotates, the drive shaft 606 follows the rotation, and the drive shaft 606 drives the connecting device 7 to rotate, thereby driving the rotor 4 to rotate.

[0054] As a preferred Figure 8 As shown, the cylinder body 602 of this embodiment is provided with a plurality of through holes 607 along the axial circumference, and the plurality of through holes 607 are respectively connected to the liquid inlet 604 and the liquid outlet 605. The number of plungers 603 is the same as the through holes 607, and they are inserted into each through hole 607. A core body 608 is also provided in the chamber body 601, and each plunger 603 and the core body 608 abut against each other. The core body 608 is tilted relative to the axial direction of the cylinder body 602.

[0055] Specifically, the above-mentioned plunger 603 can push the cylinder body 602 to rotate because multiple through holes 607 are evenly opened on the circumference of the cylinder body 602, and a plunger 603 is arranged in each through hole 607. The liquid inlet 604 injects oil into several of the through holes 607, and the other through holes 607 discharge oil to the liquid outlet 605. When injecting oil, the plunger 603 slides out of the through hole 607, and the plunger 603 abuts against the core body 608, thereby generating a reaction force. Since the core body 608 is tilted, it can convert linear reciprocating motion into circular motion and push adjacent plungers 603 to rotate. The tilted core body 608 ensures that the positions of multiple plungers 603 in the through hole 607 are different. In this way, the rotation of the cylinder body 602 is repeatedly realized, hydraulic energy is converted into mechanical energy, and the torque can also be increased.

[0056] As a preferred Figure 10 As shown, a fixing block 609 is fixedly provided on the core body 608 of this embodiment, a spherical groove 610 is provided on the fixing block 609, a spherical body 611 is provided on the end of the plunger 603 away from the through hole 607, the spherical body 611 is arranged in the spherical groove 610, a bearing 612 is fixedly provided on the core body 608, a disc 613 is fixedly provided on the bearing 612, and the fixing block 609 is fixedly provided on the disc 613.

[0057] Specifically, the bearing 612 adopts a thrust ball bearing 612, one end of which is installed on the core body 608 and the other end is fixed with a disc 613. The fixed block 609 is installed on the disc 613. When the multiple pistons 603 rotate, the disc 613 is driven to rotate. Due to the setting of the thrust ball bearing 612, the core body 608 does not rotate with it. Such a setting can reduce friction. Since the core body 608 and the cylinder body 602 are tilted, and the disc 613 needs to be connected to the piston 603, a fixed block 609 is added. The number of fixed blocks 609 is the same as that of the piston 603. A spherical connection is used between the fixed block 609 and the piston 603. Such a setting ensures that the disc 613 can still rotate with the cylinder body 602 after the core body 608 is tilted. The spherical connection is to open a spherical groove 610 on the fixed block 609, and the spherical body 611 on the piston 603 can rotate universally in the spherical groove 610.

[0058] As a preferred Figure 8 、 Figure 9 and Figure 10As shown, in this embodiment, an adjusting member 614 for adjusting the tilt angle of the core 608 is further provided in the warehouse body 601, and a spherical body 611 identical to the plunger 603 is provided on the core body 608. A cylindrical groove 617 is provided on the adjusting member 614, and the spherical body 611 is arranged in the cylindrical groove 617. An annular groove 615 is provided on the warehouse body 601, and rotating rods 616 are extended into the annular groove 615 on both sides of the core 608; the adjusting member 614 includes a cylindrical groove 6141 provided on the warehouse body 601, an adjusting shaft 6142 slidingly arranged in the cylindrical groove 6141, and a bolt 6143 rotatably arranged at the bottom end of the adjusting shaft 6142, and the bolt 6143 is screwed to the warehouse body 601.

[0059] Specifically, the reason why the adjusting member 614 adjusts the tilt angle of the core 608 is to control the amount of oil injected into the through hole 607, that is, the movement distance of the plunger 603, thereby controlling the torque of the cylinder 602, so that it is suitable for motors of different sizes. The spherical body 611 on the core 608 moves in the cylindrical groove 617 to ensure that the adjusting member 614 can control the swing of the core 608. Another reason why the core 608 can swing is the annular groove 615 set on both sides of the warehouse body 601, and the rotating rod 616 rotates in the annular groove 615. The shape of the rotating rod 616 is the same as the annular groove 615. Such a setting can ensure that the core 608 swings.

[0060] In addition, the reason why the adjusting member 614 can adjust the swing of the core body 608 is that the adjusting shaft 6142 can rise and fall in the cylindrical groove 6141, the axial direction of the cylindrical groove 6141 is perpendicular to the axial direction of the cylinder body 602, and the cylindrical groove 617 is opened on the side of the adjusting shaft 6142. When the bolt 6143 rotates, it pushes the adjusting shaft 6142 to rise and fall, and the adjusting shaft 6142 drives the spherical body 611 on the core body 608 to move. At the same time, the rotating rod 616 on the core body 608 rotates in the annular groove 615, so the rising and falling of the adjusting shaft 6142 can drive the core body 608 to swing.

[0061] As a preferred embodiment, Figure 3 and Figure 4 As shown, in this embodiment, the connecting device 7 includes a follower disk 701 fixedly provided on the drive shaft 606, a follower drum 702 fixedly provided on the rotor 4, and an abutment plate 703 rotatably provided on the follower disk 701, and the abutment plate 703 abuts against the follower drum 702; the connecting device 7 also includes a driving member 704 for driving the abutment plate 703 to rotate, the driving member 704 is sleeved on the drive shaft 606, and the driving member 704 is driven by a hydraulic cylinder 705.

[0062] It should be noted that a center shaft 709 can be inserted between the rotor 4 and the drive shaft 606 for assisting rotation, and the center shaft 709 will not affect the independent rotation of the rotor 4 and the drive shaft 606. The follower disc 701 is fixedly mounted on the end of the drive shaft 606, and the follower drum 702 is fixedly mounted on the end of the rotor 4. The abutment plate 703 is located on the side of the follower disc 701 away from the drive shaft 606, that is, the abutment plate 703 is located in the follower drum 702, and friction plates 706 are respectively provided on the inner wall of the follower drum 702 and the abutment plate 703. When the abutment plate 703 approaches the follower drum 702, the two friction plates 706 are in contact and subjected to force. When the force reaches a certain level, locking occurs. Therefore, the follower disc 701 can drive the follower drum 702 to rotate. The driving device 6 arranged in this way can drive the motor to rotate through the connecting device 7.

[0063] In addition, the swinging of the abutment plate 703 on the follower disk 701 needs to be controlled externally, so a driving member 704 is added. The driving member 704 is sleeved on the driving shaft 606 to ensure that the driving member 704 can rotate with the driving shaft 606 and can also control the abutment plate 703. The setting of the hydraulic cylinder 705 can drive the driving member 704 to move, ensuring that the abutment plate 703 and the follower drum 702 are locked with each other. The purpose of using the hydraulic cylinder 705 is to avoid the contact friction being too small to cause locking, resulting in the drive device 6 being unable to drive the rotor 4 to rotate.

[0064] As a preferred Figure 5 As shown, the driving member 704 of this embodiment includes an annular sleeve 7041 slidingly set on the driving shaft 606, an L-shaped rod 7042 rotatably set on the follower disk 701, and an elliptical ring 7043 rotatably set on the L-shaped rod 7042, and a connecting rod 7044 is rotatably set on the elliptical ring 7043, and the connecting rod 7044 and the abutment plate 703 are rotatably connected.

[0065] Specifically, the driving member 704 can drive the abutment piece 703 to swing because the annular sleeve 7041 slides on the driving shaft 606, driving the L-shaped rod 7042 to swing, the L-shaped rod 7042 drives the elliptical ring 7043 to rise and fall, the elliptical ring 7043 drives the connecting rod 7044 to move, and the connecting rod 7044 pushes the abutment piece 703 to move outward, thereby approaching the follower drum 702. The inner diameter of the elliptical ring 7043 is larger than the diameter of the driving shaft 606, ensuring that the elliptical ring 7043 can be sleeved on the driving shaft 606 and can rise and fall. An opening 707 is opened on the follower disk 701, and the L-shaped rod 7042 is passed through the opening 707. One end of the L-shaped rod 7042 is connected to the rotating shaft of the elliptical ring 7043, and the other end is rotatably connected to the annular sleeve 7041. A U-shaped groove 708 is opened at the other end, and the axis of the annular sleeve 7041 is set in the U-shaped groove 708 to ensure that the L-shaped rod 7042 can be pushed to swing, and a key block is set between the annular sleeve 7041 and the drive shaft 606 to ensure that the annular sleeve 7041 can only perform reciprocating sliding movements.

[0066] As a preferred embodiment, Figure 5 As shown, in this embodiment, there are two L-shaped rods 7042, a cross rod 7045 is rotatably arranged between the two L-shaped rods 7042, the elliptical ring 7043 is rotatably connected to the cross rod 7045, and there are two abutment plates 703. Two cross rods 7045 are relatively arranged on the elliptical ring 7043, and are rotatably connected to the two abutment plates 703 respectively; an active ring 7046 is rotatably arranged on the annular sleeve 7041, and the driving rod of the hydraulic cylinder 705 is rotatably connected to the active ring 7046.

[0067] It should be noted that the two L-shaped rods 7042 are located on both sides of the elliptical ring 7043 to ensure the stability of the lifting of the elliptical ring 7043. The middle part of the cross bar 7045 is connected to the rotating shaft of the elliptical ring 7043. The gap at the rotating shaft is large to ensure that when the L-shaped rod 7042 swings, the elliptical ring 7043 can achieve the lifting action. The purpose of setting two abutment plates 703 is to ensure the uniformity of the locking of the follower drum 702 and avoid fatigue of the driving member 704 and breakage. The number of connecting rods 7044 is the same as that of the abutment plates 703, and they are all connected to the same position of the elliptical ring 7043 to ensure that the two abutment plates 703 move in the same position, thereby improving the follower The drum 702 is locked uniformly, and the active ring 7046 can rotate on the annular sleeve 7041. This arrangement ensures that the annular sleeve 7041 can rotate with the follower disk 701, while the active ring 7046 will not rotate with it. That is to say, the active ring 7046 can be connected to the hydraulic cylinder 705, but will not affect the rotation of the annular sleeve 7041, and can also push the annular sleeve 7041 to swing. The cylinder sleeve of the hydraulic cylinder 705 is fixedly connected to the warehouse body 601. The hydraulic cylinder 705 can drive the annular sleeve 7041 to move, and the annular sleeve 7041 pushes the L-shaped rod 7042 to swing, and then the above steps are used to achieve the locking of the abutment piece 703 and the follower drum 702.

[0068] The auxiliary starting device of the large motor in this embodiment ensures that the motor can be auxiliary driven by the setting of the driving device 6, and then powered on, reducing current transmission and saving energy. The setting of the connecting device 7 ensures that the driving device 6 and the motor are separated after the motor works, avoiding the motor driving the driving device 6 to rotate and causing unnecessary energy waste.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An auxiliary starting device for a large motor, characterized in that: include: A casing (1), wherein end covers (2) are fixedly provided at both ends of the casing (1); A stator (3) and a rotor (4), wherein the stator (3) is fixedly disposed in the housing (1), and the rotor (4) is rotatably disposed in the stator (3), with both ends extending out of the end cover (2); A tail shell (5) is fixedly mounted on one of the end covers (2); A driving device (6) is fixedly arranged at an end of the tail housing (5) away from the housing (1), the driving device (6) is fixedly connected to an end of the rotor (4) extending out of the end cover (2), and the driving device (6) drives the rotor (4) to rotate; A connecting device (7) for connecting the rotor (4) and the driving device (6), wherein the driving device (6) drives the rotor (4) to rotate via the connecting device (7); The driving device (6) comprises a bin (601) fixedly arranged on the tail shell (5), a cylinder (602) rotatably arranged in the bin (601), and a plunger (603) slidably arranged in the cylinder (602); the bin (601) is provided with a liquid inlet (604) and a liquid outlet (605) communicating with the cylinder (602); a driving shaft (606) extends out of the bin (601) from a side of the cylinder (602) away from the plunger (603); and the driving shaft (606) is engaged with the connecting device (7); The cylinder body (602) is provided with a plurality of through holes (607) along the axial circumference, and the plurality of through holes (607) are respectively connected to the liquid inlet (604) and the liquid outlet (605). The number of the plungers (603) is the same as the number of the through holes (607), and the plungers (603) are inserted into each of the through holes (607); A core body (608) is further provided in the chamber body (601), each plunger (603) and the core body (608) abut against each other, and the core body (608) is arranged to be tilted relative to the axial direction of the cylinder body (602).

2. The auxiliary starting device for a large motor according to claim 1, characterized in that: A fixing block (609) is fixedly provided on the core (608), a spherical groove (610) is provided on the fixing block (609), a spherical body (611) is provided at one end of the plunger (603) away from the through hole (607), and the spherical body (611) is arranged in the spherical groove (610); A bearing (612) is fixedly provided on the core (608), a disc (613) is fixedly provided on the bearing (612), and the fixing block (609) is fixedly provided on the disc (613).

3. The auxiliary starting device for a large motor according to claim 1, characterized in that: The silo (601) is further provided with an adjusting member (614) for adjusting the tilt angle of the core (608). The core (608) is provided with a spherical body (611) identical to the plunger (603). The adjusting member (614) is provided with a cylindrical groove (617). The spherical body (611) is arranged in the cylindrical groove (617). The silo (601) is provided with an annular groove (615). Rotating rods (616) are provided on both sides of the core (608) and extend into the annular groove (615).

4. The auxiliary starting device for a large motor according to claim 3, characterized in that: The adjusting member (614) comprises a cylindrical groove (6141) provided on the silo body (601), an adjusting shaft (6142) slidably arranged in the cylindrical groove (6141), and a bolt (6143) rotatably arranged at the bottom end of the adjusting shaft (6142), wherein the bolt (6143) is threadedly connected to the silo body (601).

5. The auxiliary starting device for a large motor according to any one of claims 1 to 4, characterized in that: The connecting device (7) comprises a follower disc (701) fixedly arranged on the drive shaft (606), a follower drum (702) fixedly arranged on the rotor (4), and an abutment sheet (703) rotatably arranged on the follower disc (701), wherein the abutment sheet (703) abuts against the follower drum (702).

6. The auxiliary starting device for a large motor according to claim 5, characterized in that: The connecting device (7) further comprises a driving member (704) for driving the abutting plate (703) to rotate, wherein the driving member (704) is sleeved on the driving shaft (606), and the driving member (704) is driven by a hydraulic cylinder (705).

7. The auxiliary starting device for a large motor according to claim 6, characterized in that: The driving member (704) comprises an annular sleeve (7041) slidably arranged on the driving shaft (606), an L-shaped rod (7042) rotatably arranged on the follower disk (701), and an elliptical ring (7043) rotatably arranged on the L-shaped rod (7042); a connecting rod (7044) is rotatably arranged on the elliptical ring (7043); and the connecting rod (7044) and the abutting plate (703) are rotatably connected.

8. The auxiliary starting device for a large motor according to claim 7, characterized in that: There are two L-shaped rods (7042), a crossbar (7045) is rotatably arranged between the two L-shaped rods (7042), the elliptical ring (7043) is rotatably connected to the crossbar (7045), there are two abutment pieces (703), two connecting rods (7044) are arranged on the elliptical ring (7043) in opposite directions, and are rotatably connected to the two abutment pieces (703) respectively; And / or, an active ring (7046) is rotatably provided on the annular sleeve (7041), and a driving rod of the hydraulic cylinder (705) is rotatably connected to the active ring (7046).

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