Motor inertia control device and motor inertia control method

Abstract

The present invention discloses a motor inertia control device, comprising an inertia shaft that is rotatably arranged and used to be connected to a motor and a first inertia disk that is arranged on the inertia shaft and used to be connected to a load device, wherein the inertia shaft and the first inertia disk are located outside the motor. The motor inertia control device of the present invention can directly increase the motor inertia as required by connecting the motor through a separately designed inertia structure, so that the motor can easily drive a device with a larger load. The structure can simply and conveniently increase the motor inertia, is flexible and convenient, and is simple and convenient to install and disassemble. The present invention also provides a motor inertia control method.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric motors, and in particular, relates to a motor inertia control device and a motor inertia control method. Background Art

[0002] The existing method of increasing the inertia of the motor is to install an inertia disk on the rotor of the motor. The inertia disk is located between the stator and the rear end cover of the motor. The stator is filled with potting glue to become a potted stator. The rear end surface of the potted stator protrudes with a wire fixing body formed by potting glue. The wires led out of the stator pass through the wire fixing body and then lead out to the outside of the motor housing. The wire fixing body is located between the housing and the inertia disk. The installation method of the motor with this structure is: first install the front bearing, rotor, inertia disk, rear bearing and rear end cover into component A, then install the housing, stator and front end cover and then pot glue to form component B, install component A into component B from the rear end of the housing, and then install the encoder and rear cover.

[0003] The motor of the above structure seals the inertia disk inside the housing with potting glue, which is not convenient for disassembly. Moreover, the structure only considers the connection method between the inertia disk and the motor rotor, but does not consider the connection method between the inertia disk and the external device, which makes it difficult to use. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a motor inertia control device and a motor inertia control method, the purpose of which is to facilitate disassembly and assembly.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a motor inertia control device includes an inertia shaft that is rotatably arranged and used to be connected to the motor and a first inertia disk that is arranged on the inertia shaft and used to be connected to the load device, and the inertia shaft and the first inertia disk are located outside the motor.

[0006] The inertia shaft is detachably connected to the motor, and the first inertia disk is detachably connected to the inertia shaft.

[0007] The first inertia disc is a disc-shaped structure, and the first inertia disc is sleeved on the inertia shaft, and the first inertia disc and the inertia shaft are coaxially arranged.

[0008] A expansion sleeve is provided between the first inertia disc and the inertia shaft.

[0009] The inertia shaft comprises a transmission shaft and a second inertia disc, wherein the second inertia disc is arranged at one end of the transmission shaft and connected to the motor, and the first inertia disc is arranged at the other end of the transmission shaft.

[0010] The second inertia disc is a disc-shaped structure, and the second inertia disc is coaxially arranged with the transmission shaft and the first inertia disc.

[0011] The diameter of the first inertia disk is greater than the diameter of the second inertia disk.

[0012] The motor inertia control device further includes a support mechanism for supporting the inertia shaft, and the support mechanism is located between the first inertia disk and the second inertia disk.

[0013] The support mechanism includes a bracket, a bearing seat arranged on the bracket, and a bearing located between the bearing seat and the transmission shaft, and the bearing seat is located between the first inertia disk and the second inertia disk.

[0014] The present invention also provides a motor inertia control method, which adopts the motor inertia control device, and the motor is connected to the load device through the motor inertia control device.

[0015] The motor inertia control device of the present invention increases the inertia structure by a separate design and connects it to the motor, and can directly increase the motor inertia as required, so that the motor can easily drive equipment with a larger load. This structure can simply and conveniently increase the motor inertia, is flexible and convenient, and is simple and convenient to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 It is a structural schematic diagram of the motor inertia control device of the present invention;

[0018] Figure 2 is a cross-sectional view of the motor inertia control device of the present invention;

[0019] Figure 3 is a top view of the motor inertia control device of the present invention;

[0020] The markings in the figure are: 1, transmission shaft; 2, first inertia plate; 3, second inertia plate; 4, inner ring of expansion sleeve; 5, outer ring of expansion sleeve; 6, bearing seat; 7, bracket; 8, bearing; 9, sleeve; 10, bolt; 11, bearing retaining ring. DETAILED DESCRIPTION

[0021] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0022] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0023] like Figures 1 to 3 As shown, the present invention provides a motor inertia control device, including an inertia shaft rotatably arranged and used to be connected to the motor and a first inertia disk 2 arranged on the inertia shaft and used to be connected to a load device, wherein the inertia shaft and the first inertia disk 2 are located outside the motor.

[0024] Specifically, if Figures 1 to 3 As shown, the motor inertia control device is used to transfer the rotational force generated by the motor to the load device. The motor is connected to the load device through the motor inertia control device, and the motor drives the load device to operate through the motor inertia control device. One end of the inertia shaft is connected to the motor, and the first inertia disk 2 is arranged at the other end of the inertia shaft and the first inertia disk 2 is connected to the load device. The first inertia disk 2 rotates synchronously with the inertia shaft. By arranging the first inertia disk 2 to cooperate with the inertia shaft, the motor inertia is increased, so that the motor can easily drive equipment with a larger load. At the same time, considering the convenience of installation and disassembly of the motor inertia control device, the inertia shaft and the motor are detachably connected, and the first inertia disk 2 and the inertia shaft are detachably connected.

[0025] like Figures 1 to 3 As shown, the first inertia disc 2 is a disc-shaped structure, and the first inertia disc 2 is sleeved on the inertia shaft and the first inertia disc 2 and the inertia shaft are coaxially arranged. The inertia shaft is connected to the motor through multiple bolts, and the first inertia disc 2 is connected to the load device through multiple bolts, which is convenient and simple to disassemble and assemble, and has high efficiency. The first inertia disc 2 has an internal threaded hole for inserting the bolt, and multiple internal threaded holes are provided and all the internal threaded holes are evenly distributed along the circumference on the first inertia disc 2 with the axis of the first inertia disc 2 as the center line, so as to improve the reliability of connection with the load device.

[0026] like Figures 1 to 3As shown, as a preferred embodiment, a clamping sleeve is provided between the first inertia disc 2 and the inertia shaft, and the first inertia disc 2 has a receiving cavity for accommodating the clamping sleeve, which is a circular cavity provided at the inner center of the first inertia disc 2. The inertia shaft comprises a transmission shaft 1 and a second inertia disc 3, the second inertia disc 3 is provided at one end of the transmission shaft 1 and the second inertia disc 3 is connected to the motor, and the first inertia disc 2 is provided at the other end of the transmission shaft 1. The clamping sleeve is composed of a clamping sleeve inner ring 4 and a clamping sleeve outer ring 5, the clamping sleeve outer ring 5 is sleeved on the clamping sleeve inner ring 4, the clamping sleeve outer ring 5 is embedded in the receiving cavity of the first inertia disc 2, and the clamping sleeve outer ring 5 and the first inertia disc 2 are tightly matched, and the clamping sleeve inner ring 4 is sleeved on the transmission shaft 1. The outer ring 5 of the expansion sleeve is a hollow annular structure. The center hole of the outer ring 5 of the expansion sleeve is a tapered hole. The inner surface of the expansion sleeve is a tapered surface. The diameter of the center hole of the outer ring 5 of the expansion sleeve gradually decreases in the direction close to the supporting mechanism. The inner ring 4 of the expansion sleeve is a circular ring structure with a hollow interior, the outer circumferential surface of the inner ring 4 of the expansion sleeve is a conical surface, the central hole of the inner ring 4 of the expansion sleeve is a circular hole, and a flange is provided at one end of the inner ring 4 of the expansion sleeve away from the supporting mechanism, the flange is a circular ring structure and the flange protrudes toward the outer side of the inner ring 4 of the expansion sleeve along the radial direction of the inner ring 4 of the expansion sleeve, the flange has a through hole for allowing the bolt 10 to pass through, and the aperture of the outer circumferential surface of the inner ring 4 of the expansion sleeve also tends to gradually decrease in the direction away from the flange; the outer circumferential surface of the outer ring 5 of the expansion sleeve fits with the inner circumferential surface of the accommodating cavity of the first inertia disk 2, the inner circumferential surface of the inner ring 4 of the expansion sleeve fits with the outer circumferential surface of the transmission shaft 1, the outer circumferential surface of the inner ring 4 of the expansion sleeve fits with the inner circumferential surface of the outer ring 5 of the expansion sleeve, the outer ring 5 of the expansion sleeve hugs the inner ring 42 of the expansion sleeve, and the inner ring 4 of the expansion sleeve hugs the transmission shaft 1, thereby realizing locking, so that the first inertia disk 2 and the inertia shaft can rotate synchronously. The inner ring 4 of the expansion sleeve is fixedly connected with the outer ring 5 of the expansion sleeve by a plurality of bolts 10. The axis of the bolt 10 is parallel to the axis of the transmission shaft 1. The outer ring 5 of the expansion sleeve has an internal thread hole for inserting the bolt 10. The bolt 10 passes through the through hole provided on the flange of the inner ring 4 of the expansion sleeve and is screwed into the internal thread hole of the outer ring 5 of the expansion sleeve, thereby tightening the inner ring 4 of the expansion sleeve and the outer ring 5 of the expansion sleeve, and realizing the purpose of assembling the inertia shaft and the first inertia disc 2 in a tight fit. One end of the first inertia disc 2 is close to the support mechanism, and the other end is far away from the support mechanism. The accommodating cavity of the first inertia disc 2 is formed with an opening for the expansion sleeve to pass through on the end surface of the end of the first inertia disc 2 far away from the support mechanism. When disassembling, the bolt 10 is first unscrewed and taken out, and then the inner ring 4 of the expansion sleeve is removed from the transmission shaft 1. Finally, the first inertia disc 2 can be removed from the transmission shaft 1. The operation is time-saving and labor-saving, and the mating surfaces between the components will not be damaged.

[0027] like Figures 1 to 3As shown, the second inertia disc 3 is a disc-shaped structure. The second inertia disc 3 is coaxially arranged with the transmission shaft 1 and the first inertia disc 2. The diameter of the first inertia disc 2 is larger than the diameter of the second inertia disc 3. The transmission shaft 1 is a round shaft. One end of the transmission shaft 1 is fixedly connected to the second inertia disc 3 at the center of the second inertia disc 3. The first inertia disc 2 is sleeved on the other end of the transmission shaft 1. The expansion sleeve is also arranged on the end of the transmission shaft 1. The diameters of the first inertia disc 2 and the second inertia disc 3 are larger than the diameter of the transmission shaft 1. The second inertia disc 3 is connected to the motor through multiple bolts, which is convenient and simple to disassemble and assemble with high efficiency. The second inertia disc 3 has an internal threaded hole for inserting the bolt. The internal threaded holes are arranged in multiple and all the internal threaded holes are evenly distributed along the circumferential direction on the second inertia disc 3 with the axis of the second inertia disc 3 as the center line, so as to improve the reliability of the connection with the motor. The second inertia disc 3 is arranged to further increase the inertia of the motor. The disc-shaped design at both ends can not only effectively change the inertia, but also balance the entire structure, and improve reliability and stability. The first inertia disk 2 is replaceable. The first inertia disk 2 has a plurality of models with different outer diameters. By selecting first inertia disks 2 with different outer diameters and installing them on the inertia shaft, the size of the motor inertia can be changed as needed.

[0028] like Figures 1 to 3 As shown, the motor inertia control device of the present invention also includes a support mechanism for supporting the inertia shaft, the support mechanism keeps the inertia shaft in a horizontal state, and the support mechanism is located between the first inertia disk 2 and the second inertia disk 3. The support mechanism includes a bracket 7, a bearing seat 6 arranged on the bracket 7, and a bearing 8 located between the bearing seat 6 and the transmission shaft 1, and the bearing seat 6 is located between the first inertia disk 2 and the second inertia disk 3. The bracket 7 is vertically arranged, and the bracket 7 has a mounting hole for inserting the bearing seat 6, and the bearing seat 6 is fixedly connected to the bracket 7. The bearing seat 6 is a structure with openings at both ends and a hollow interior, and the transmission shaft 1 passes through the center hole of the bearing seat 6. Two bearings 8 are provided, and the two bearings 8 are located in the center hole of the bearing seat 6 and the two bearings 8 are sleeved on the transmission shaft 1. A sleeve is also provided between the two bearings 8, and the sleeve is sleeved on the transmission shaft 1, and the sleeve is clamped between the two bearings 8.

[0029] The present invention also provides a motor inertia control method, using the motor inertia control device of the above structure, the motor is connected to the load device through the motor inertia control device. Figures 1 to 3 Since the motor inertia control method of the present invention adopts the motor inertia control device in the above embodiment, it has all the advantages of the above motor inertia control device.

[0030] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A motor inertia control device, characterized in that: It includes an inertia shaft that is rotatably arranged and used to be connected to the motor, and a first inertia disk that is arranged on the inertia shaft and used to be connected to the load device, and the inertia shaft and the first inertia disk are located outside the motor; The motor inertia control device is used to transmit the rotational force generated by the motor to the load device. The motor is connected to the load device through the motor inertia control device, and the motor drives the load device to operate through the motor inertia control device. One end of the inertia shaft is connected to the motor, and the first inertia disk is arranged at the other end of the inertia shaft, and the first inertia disk rotates synchronously with the inertia shaft. The first inertia disc is detachably connected to the inertia shaft; the first inertia disc is a disc-shaped structure, the first inertia disc is sleeved on the inertia shaft and the first inertia disc and the inertia shaft are coaxially arranged; the inertia shaft is connected to the motor through a plurality of bolts, and the first inertia disc is connected to the load device through a plurality of bolts; the first inertia disc has an internal threaded hole for the bolt to be inserted, and a plurality of internal threaded holes are arranged and all the internal threaded holes are evenly distributed along the circumferential direction on the first inertia disc with the axis of the first inertia disc as the center line; The inertia shaft includes a transmission shaft and a second inertia disc, the second inertia disc is arranged at one end of the transmission shaft and the second inertia disc is connected to the motor, and the first inertia disc is arranged at the other end of the transmission shaft; The second inertia disc is a disc-shaped structure, the second inertia disc is coaxially arranged with the transmission shaft and the first inertia disc, and the diameter of the first inertia disc is greater than the diameter of the second inertia disc; The transmission shaft is a round shaft, one end of the transmission shaft is fixedly connected to the second inertia disc at the center of the second inertia disc, the first inertia disc is sleeved on the other end of the transmission shaft, and the diameters of the first inertia disc and the second inertia disc are larger than the diameter of the transmission shaft; The inertia shaft is detachably connected to the motor, and the second inertia disc is connected to the motor by a plurality of bolts; the second inertia disc has an internal threaded hole for inserting the bolts, and a plurality of internal threaded holes are provided, and all the internal threaded holes are evenly distributed along the circumferential direction on the second inertia disc with the axis of the second inertia disc as the center line; The first inertia disk is replaceable. The first inertia disk has multiple models with different outer diameters. By selecting first inertia disks with different outer diameters and installing them on the inertia shaft, the size of the motor inertia can be changed as needed. A tightening sleeve is arranged between the first inertia disc and the inertia shaft. The first inertia disc has a receiving cavity for accommodating the tightening sleeve. The receiving cavity is a circular cavity arranged at the inner center of the first inertia disc. The tightening sleeve is composed of an inner ring of the tightening sleeve and an outer ring of the tightening sleeve. The outer ring of the tightening sleeve is sleeved on the inner ring of the tightening sleeve. The outer ring of the tightening sleeve is embedded in the receiving cavity of the first inertia disc and the outer ring of the tightening sleeve is tightly matched with the first inertia disc. The inner ring of the tightening sleeve is sleeved on the transmission shaft. The outer ring of the tightening sleeve is a circular hollow inner ring. The central hole of the outer ring of the expansion sleeve is a tapered hole, the inner surface of the expansion sleeve is a tapered surface, and the diameter of the central hole of the outer ring of the expansion sleeve gradually decreases in the direction close to the supporting mechanism; the inner ring of the expansion sleeve is a circular ring structure with a hollow interior, the outer surface of the inner ring of the expansion sleeve is a tapered surface, the central hole of the inner ring of the expansion sleeve is a circular hole, and a flange is provided at one end of the inner ring of the expansion sleeve away from the supporting mechanism, and the flange is a circular ring structure and the flange faces the expansion sleeve along the radial direction of the inner ring of the expansion sleeve. The outer side of the inner ring is protruding, and the flange has a through hole for the bolt to pass through. The outer circumferential surface of the inner ring of the expansion sleeve has a gradually decreasing aperture in the direction away from the flange; the outer circumferential surface of the outer ring of the expansion sleeve fits with the inner circumferential surface in the accommodating cavity of the first inertia disk, the inner circumferential surface of the inner ring of the expansion sleeve fits with the outer circumferential surface of the transmission shaft, the outer circumferential surface of the inner ring of the expansion sleeve fits with the inner circumferential surface of the outer ring of the expansion sleeve, the outer ring of the expansion sleeve hugs the inner ring of the expansion sleeve, and the inner ring of the expansion sleeve hugs the transmission shaft, thereby achieving locking. , so that the first inertia disk and the inertia shaft can rotate synchronously; the inner ring of the expansion sleeve is fixedly connected to the outer ring of the expansion sleeve by multiple bolts, the axis of the bolts is parallel to the axis of the transmission shaft, and the outer ring of the expansion sleeve has an internal threaded hole for the bolts to be inserted. The bolts pass through the through holes provided on the flange of the inner ring of the expansion sleeve and are screwed into the internal threaded holes of the outer ring of the expansion sleeve, thereby tightening the inner ring of the expansion sleeve and the outer ring of the expansion sleeve, thereby achieving the purpose of assembling the inertia shaft and the first inertia disk together in a tight fit; The motor inertia control device further comprises a support mechanism for supporting the inertia shaft, one end of the first inertia disc is close to the support mechanism, and the other end is far away from the support mechanism. The accommodating cavity of the first inertia disc is formed with an opening for the expansion sleeve to pass through on the end surface of the end of the first inertia disc far away from the support mechanism. When disassembling, the bolts are first unscrewed and taken out, and then the inner ring of the expansion sleeve is removed from the transmission shaft, and finally the first inertia disc can be removed from the transmission shaft; The support mechanism keeps the inertia shaft in a horizontal state, the support mechanism is located between the first inertia disk and the second inertia disk, the support mechanism includes a bracket, a bearing seat arranged on the bracket, and a bearing located between the bearing seat and the transmission shaft, and the bearing seat is located between the first inertia disk and the second inertia disk; The bracket has a mounting hole for inserting the bearing seat, the bearing seat is fixedly connected to the bracket, the bearing seat is a structure with openings at both ends and a hollow interior, the transmission shaft passes through the center hole of the bearing seat, two bearings are provided, the two bearings are located in the center hole of the bearing seat and the two bearings are sleeved on the transmission shaft, and a sleeve is also provided between the two bearings, the sleeve is sleeved on the transmission shaft, and the sleeve is clamped between the two bearings.

2. A motor inertia control method, characterized in that: Using the motor inertia control device described in claim 1, the motor is connected to the load device through the motor inertia control device.

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