A motor with multi-machine cascading function

Abstract

The present invention discloses a motor with a multi-machine cascade function, which relates to the field of permanent magnet synchronous motors, including stator windings, etc. The stator windings are fixed to the stator core winding wiring grooves and form a stator assembly placed in a casing, and the lead-out wires of the stator windings are electrically connected to the connector fixed on the casing; the rotor yoke is fastened to the connecting end of the rotating shaft to form a rotor assembly and is installed in the casing, and the output end of the rotating shaft is provided with an external spline for matching the connecting end to realize spline connection transmission; the magnetic steel is fastened to the rotor yoke; a connecting protrusion is provided on one side of the casing close to the output end, and a connecting groove is provided on one side of the casing close to the connecting end, and the connecting protrusion and the connecting groove are detachably connected to realize multi-machine cascade. The present invention can perform motor cascade according to demand, and a single machine has a small size, light weight, and is easy to disassemble. After the multi-machine combination, it has a large torque output and a redundant backup function, which can effectively improve the driving ability and reliability of the drive system.

Description

Technical Field

[0001] The present invention relates to the field of permanent magnet synchronous motors, and in particular to a motor with a multi-machine cascade function. Background Art

[0002] Towed linear array sonar is an important device for long-range underwater acoustic detection of submarines and surface ships. The retractable system is a device that enables the towed linear array sonar to be released step by step before detection and safely recovered and stored after detection. The volume, form, and retractable capacity of the retractable device are constrained by many factors such as the platform space and the size of the towed linear array sonar. Therefore, the equipment used in the design of the retractable system has high requirements for flexibility. At the same time, as the requirements for the retractable capacity and reliability of the equipment become higher and higher, higher requirements are also placed on the driving capacity, reliability, and flexibility of the motor in the retractable system.

[0003] At present, most of the existing military equipment and general-purpose motors on the market are designed independently. Figure 1 As shown in the figure, when selecting motors, the model is mostly selected based on the capacity requirements. This type of motor cannot meet the requirements of the current towed linear array sonar for the retractable system in terms of space volume, redundant design, and installation requirements. The multi-machine cascade motor in this article has a small individual volume and weight, and a moderate output torque capacity. When different retractable systems have different requirements for driving capacity, it can be selected for single-machine use or multi-machine cascade use according to demand to meet the equipment requirements. At the same time, the multi-machine cascade method can also effectively realize the redundant backup function of the drive equipment. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a motor with a multi-machine cascade function, which has the advantages of small size, light weight, easy disassembly and flexible combination.

[0005] The objective of the present invention is achieved through the following technical solutions: This motor with multi-machine cascading function includes a stator winding, a casing, a connector, a rotating shaft, a rotor yoke, a magnetic steel and a rotary transformer. The stator winding is routed and fixed through the stator core winding routing groove. The two constitute a stator assembly and are placed in the casing for installation and fixation. The lead wire of the stator winding is electrically connected to the connector, and the connector is fixed on the casing; the rotating shaft has an output end and a connecting end. The rotor yoke is fastened to the connecting end of the rotating shaft to form a rotor assembly and is installed in the casing. The output end of the rotating shaft extends out of the casing. The output end of the output end An external spline is provided on the outer surface of the part, and a connecting hole is provided at the end of the connecting end. The external spline is used to cooperate with the internal spline provided on the inner wall of the connecting hole to realize spline connection transmission; the magnetic steel is fastened to the rotor yoke; the rotary transformer is fixedly installed at the tail of the rotor assembly and pressed with the transformer end cover, and the signal line of the rotary transformer is electrically connected to the stator assembly signal connector fixed on the casing; a connecting protrusion is provided on one side of the casing close to the output end, and a connecting groove is provided on one side of the casing close to the connecting end, and the connecting protrusion and the connecting groove are detachably connected to realize multi-machine cascading.

[0006] As a further technical solution, a groove is provided on the connecting protrusion.

[0007] As a further technical solution, a circle of magnetic steel protection material is arranged between the outer periphery of the magnetic steel and the stator core winding wiring slot for protecting the fixed magnetic steel.

[0008] As a further technical solution, the output end and the connecting end of the rotating shaft are respectively supported on the casing through a bearing.

[0009] As a further technical solution, the universal plug, the mounting cover and the baffle cover are sequentially sleeved on the output end of the rotating shaft to realize dynamic sealing between the rotating shaft and the casing; the mounting cover is threadedly fixed on the casing to press the universal plug, the baffle cover is threadedly fixed on the mounting cover to press the mounting cover, and the universal plug is arranged between the inner wall of the mounting cover and the rotating shaft.

[0010] As a further technical solution, when multiple motors are cascaded, after the connecting protrusion of the rear motor is inserted into the connecting groove of the front motor, the casing of the front motor and the casing of the rear motor are locked by threaded connection.

[0011] As a further technical solution, when the motor is used alone or as the last-stage motor, a rear sealing cover is fixedly installed on one side of the casing close to the connection end by threads, and the rear sealing cover and the casing on this side are sealed by an O-ring.

[0012] The beneficial effects of the present invention are as follows: when a motor is selected as a driving source for a device, according to the design capacity requirements of the device, the motor with cascading function can be selected to meet different demand levels, and the motors can be cascaded according to the needs. The cascade motor combination form has a small size, light weight, and easy disassembly for a single machine. After the combination of multiple machines, it has large torque output and redundant backup functions, which can effectively improve the driving capacity and reliability of the drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the prior art.

[0014] Figure 2 It is a right view of the structure of embodiment 1 of the present invention.

[0015] Figure 3 for Figure 2 AA section view.

[0016] Figure 4 It is a left view of the structure of embodiment 2 of the present invention.

[0017] Figure 5 for Figure 4 BB cross-sectional view.

[0018] Explanation of the reference numerals: stator core winding wiring slot 1, stator winding 2, casing 3, connecting protrusion 3-1, connecting groove 3-2, groove 3-3, connector 4, rotating shaft 5, output end 5-1, connecting end 5-2, external spline 5-3, connecting hole 5-4, internal spline 5-5, rotor yoke 6, magnetic steel 7, magnetic steel protective material 8, bearing 9, universal plug 10, mounting cover 11, baffle cover 12, rotating transformer 13, transformer end cover 14, stator assembly signal connector 15, rear sealing cover 16, O-ring 17, front-stage motor 18, rear-stage motor 19. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings:

[0020] Example 1: Single machine use. Figure 2 , 3As shown, a motor with a multi-machine cascade function includes a stator winding 2, a housing 3, a connector 4, a rotating shaft 5, a rotor yoke 6, a magnetic steel 7 and a rotary transformer 13. The stator winding 2 is routed and fixed through a stator core winding routing slot 1 (preferably, the stator core winding routing slot 1 is insulated), and the two constitute a stator assembly and are placed in the housing 3 for installation and fixation. The lead wire of the stator winding 2 is electrically connected to the connector 4, and the connector 4 is fixed on the housing 3; the rotating shaft 5 has an output end 5-1 and a connection end 5-2, The rotating shaft 5 is fixed with the rotor yoke 6 through the connecting end 5-2 to form a rotor assembly and is installed in the housing 3. The output end 5-1 of the rotating shaft 5 extends out of the housing 3. The outer surface of the end of the output end 5-1 is provided with an external spline 5-3. The end of the connecting end 5-2 is provided with a connecting hole 5-4, and the inner wall of the connecting hole 5-4 is provided with an internal spline 5-5. The magnetic steel 7 is fastened to the rotor yoke 6 by gluing. A circle of magnetic steel protection material 8 is provided between the outer periphery of the magnetic steel 7 and the stator core winding wiring slot 1 to protect the fixed magnetic steel 7. Preferably, the output end 5-1 and the connecting end 5-2 of the rotating shaft 5 are supported on the housing 3 by a bearing 9 respectively. The rotary transformer 13 is fixedly mounted at the tail of the rotor assembly and is compressed by the transformer end cover 14. The signal line of the rotary transformer 13 is electrically connected to the stator assembly signal connector 15 fixed on the housing 3. The housing 3 is provided with a connection protrusion 3-1 on the side close to the output end 5-1, and a connection groove 3-2 on the side close to the connection end 5-2. The housing 3 is provided with a rear sealing cover 16 on the side close to the connection end 5-2 by threaded fixing, and the rear sealing cover 16 and the housing 3 on this side are sealed by an O-ring 17.

[0021] Furthermore, the universal plug 10, the mounting cover 11 and the blocking cover 12 are sequentially sleeved on the output end 5 - 1 of the rotating shaft 5 to realize dynamic sealing between the rotating shaft 5 and the housing 3; the mounting cover 11 is threadedly fixed on the housing 3 to compress the universal plug 10, and the blocking cover 12 is threadedly fixed on the mounting cover 11 to compress the mounting cover 11, and the universal plug 10 is arranged between the inner wall of the mounting cover 11 and the rotating shaft 5.

[0022] Example 2: Two motors are used in cascade. Figure 4 , 5As shown, a motor with a multi-machine cascade function includes a stator winding 2, a housing 3, a connector 4, a rotating shaft 5, a rotor yoke 6, a magnetic steel 7 and a rotary transformer 13. The stator winding 2 is routed and fixed through a stator core winding routing slot 1 (preferably, the stator core winding routing slot 1 is insulated), and the two constitute a stator assembly and are placed in the housing 3 for installation and fixation. The lead wire of the stator winding 2 is electrically connected to the connector 4, and the connector 4 is fixed on the housing 3; the rotating shaft 5 has an output end 5-1 and a connection end 5-2, and the rotating shaft 5 is connected to the output end 5-1 through the connection end 5-2. The rotor yoke 6 is fixed to form a rotor assembly and is installed in the housing 3. The output end 5-1 of the rotating shaft 5 extends out of the housing 3. The outer surface of the end of the output end 5-1 is provided with an external spline 5-3. The end of the connecting end 5-2 is provided with a connecting hole 5-4. The external spline 5-3 is used to cooperate with the internal spline 5-5 provided on the inner wall of the connecting hole 5-4 to realize spline connection transmission. The magnetic steel 7 is fastened to the rotor yoke 6 by gluing. A circle of magnetic steel protection material 8 is provided between the outer periphery of the magnetic steel 7 and the stator core winding wiring slot 1 to protect the fixed magnetic steel 7. Preferably, the output end 5-1 and the connecting end 5-2 of the rotating shaft 5 are supported on the housing 3 by a bearing 9 respectively. The rotary transformer 13 is fixedly mounted at the tail of the rotor assembly and is compressed by a transformer end cover 14. The signal line of the rotary transformer 13 is electrically connected to a stator assembly signal connector 15 fixed on the casing 3. A connecting protrusion 3-1 is provided on one side of the casing 3 close to the output end 5-1, and a connecting groove 3-2 is provided on one side of the casing 3 close to the connection end 5-2. The connecting protrusion 3-1 and the connecting groove 3-2 are detachably connected to realize multi-machine cascading.

[0023] The universal plug 10, the mounting cover 11 and the blocking cover 12 are sequentially sleeved on the output end 5 - 1 of the rotating shaft 5 to realize dynamic sealing between the rotating shaft 5 and the housing 3; the mounting cover 11 is threadedly fixed on the housing 3 to press the universal plug 10, and the blocking cover 12 is threadedly fixed on the mounting cover 11 to press the mounting cover 11. The universal plug 10 is arranged between the inner wall of the mounting cover 11 and the rotating shaft 5.

[0024] like Figure 5As shown, when two motors are cascaded, the rear sealing cover 16 of the front motor 18 is removed, and the output end 5-1 of the shaft 5 of the rear motor 19 is first inserted into the connecting hole 5-4 of the shaft 5 of the front motor 18, so that the two are connected and transmitted through the spline, and then the connecting protrusion 3-1 of the rear motor 19 is inserted into the connecting groove 3-2 of the front motor 18, and the connecting protrusion 3-1 is provided with a groove 3-3 for accommodating the transformer end cover 14 and other components at the tail of the rotor assembly. The housing 3 at the tail of the front motor 18 and the housing 3 at the head of the rear motor 19 are locked by threaded connection and sealed by an O-ring 17. The rear sealing cover 16 is fixedly installed on the side of the housing 3 of the rear motor 19 close to the connecting end 5-2 by threaded fixing, and the rear sealing cover 16 and the housing 3 on this side are sealed by an O-ring 17. After the two motors are cascaded, the connectors 4 of the two and the signal connector 15 of the stator assembly are electrically connected to the external control device to realize cascade control.

[0025] Embodiment 3: Multi-stage cascade use. Based on Embodiment 2, multiple front-stage motors 18 can be added according to actual use requirements, and each front-stage motor 18 and the rear-stage motor 19 relative to the front-stage motor 18 are cascaded in the manner described in Embodiment 2. After the multi-stage cascade is completed, the connector 4 of each motor and the stator assembly signal connector 15 are electrically connected to the external control device to achieve multi-stage cascade control.

[0026] Working process of the present invention: The motor with multi-machine cascade function provided by the present invention can be used as a single machine, as shown in Example 1, and can also be used in multi-machine cascade, as shown in Examples 2 and 3; when performing multi-machine cascade, it is only necessary to remove the rear sealing cover 16 of the front-stage motor 18, first insert the output end 5-1 of the shaft 5 of the rear-stage motor 19 into the connecting hole 5-4 of the shaft 5 of the front-stage motor 18, so that the internal spline 5-5 of the front-stage motor 18 and the external spline 5-3 of the rear-stage motor 19 are connected and transmitted through the spline, and then the connecting protrusion 3-1 of the rear-stage motor 19 is inserted into the connecting groove 3-2 of the front-stage motor 18. At the same time, the housing 3 at the tail of the front-stage motor 18 and the housing 3 at the head of the rear-stage motor 19 are locked by threaded connection, and sealed by an O-ring 17. Each motor is cascaded in the above manner, and the number of cascaded motors can be adjusted according to actual use requirements. Thereby realizing the functions of large torque output and redundant backup, the driving ability and reliability of the drive system can be effectively improved.

[0027] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the protection scope of the claims attached to the present invention.

Claims

1. A motor with multi-machine cascading function, characterized in that: The invention comprises a stator winding (2), a housing (3), a connector (4), a rotating shaft (5), a rotor yoke (6), a magnetic steel (7) and a rotary transformer (13), wherein the stator winding (2) is routed and fixed through a stator core winding routing slot (1), the two constitute a stator assembly and are placed in the housing (3) for installation and fixation, the lead wire of the stator winding (2) is electrically connected to the connector (4), and the connector (4) is fixed on the housing (3); the rotating shaft (5) has an output end (5-1) and a connecting end (5-2), the rotor yoke (6) is fastened to the connecting end (5-2) of the rotating shaft (5) to constitute a rotor assembly and is installed in the housing (3), the output end (5-1) of the rotating shaft (5) protrudes outside the housing (3), the outer surface of the end of the output end (5-1) is provided with an external spline (5-3), and the connecting end A connection hole (5-4) is provided at the end of the (5-2), and the external spline (5-3) is used to cooperate with the internal spline (5-5) provided on the inner wall of the connection hole (5-4) to realize spline connection transmission; the magnetic steel (7) is fastened to the rotor yoke (6); the rotary transformer (13) is fixedly mounted on the tail of the rotor assembly and compressed by the transformer end cover (14), and the signal line of the rotary transformer (13) is electrically connected to the stator assembly signal connector (15) fixed on the housing (3); a connection protrusion (3-1) is provided on one side of the housing (3) close to the output end (5-1), and a connection groove (3-2) is provided on one side of the housing (3) close to the connection end (5-2), and the connection protrusion (3-1) and the connection groove (3-2) are detachably connected to realize multi-machine cascading; The connecting protrusion (3-1) is provided with a groove (3-3); A circle of magnetic steel protection material (8) is provided between the outer periphery of the magnetic steel (7) and the stator core winding wiring slot (1) for protecting the fixed magnetic steel (7); When multiple motors are cascaded, after the connection protrusion (3-1) of the rear-stage motor (19) is inserted into the connection groove (3-2) of the front-stage motor (18), the housing (3) of the front-stage motor (18) and the housing (3) of the rear-stage motor (19) are locked by threaded connection.

2. The motor with multi-machine cascade function according to claim 1, characterized in that: The output end (5-1) and the connection end (5-2) of the rotating shaft (5) are respectively supported on the housing (3) via a bearing (9).

3. The motor with multi-machine cascade function according to claim 1, characterized in that: The universal plug (10), the mounting cover (11) and the stop cover (12) are sequentially sleeved on the output end (5-1) of the rotating shaft (5) to realize dynamic sealing between the rotating shaft (5) and the housing (3); the mounting cover (11) is threadedly fixed on the housing (3) to press the universal plug (10), the stop cover (12) is threadedly fixed on the mounting cover (11) to press the mounting cover (11), and the universal plug (10) is arranged between the inner wall of the mounting cover (11) and the rotating shaft (5).

4. The motor with multi-machine cascade function according to claim 1, characterized in that: When the motor is used alone or as the last-stage motor, a rear sealing cover (16) is fixedly installed on one side of the housing (3) close to the connection end (5-2) by means of threads, and an O-ring (17) is used to seal the rear sealing cover (16) and the housing (3) on that side.

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