Non-magnetic-isolation detachable large-torque-distance stepping motor

Abstract

The invention is suitable for the field of motor equipment, and provides a non-magnetic-isolation detachable large-torque stepping motor which comprises a base plate and a machine shell, the machine shell is fixed to the top end of the base plate, a movable shell is movably arranged at the top end of the machine shell, and an opening and closing assembly is arranged between the machine shell and the movable shell; a main shaft is rotatably inserted between the front cover and the rear cover, a rotor assembly is arranged in the middle of the main shaft, the rotor assembly comprises a central rotor, and the two sides of the central rotor are each provided with an auxiliary rotor. When the motor equipment is used, the rotor structure of the motor equipment is changed from a conventional two-section four-piece rotor iron core structure with a magnetic isolation sheet in the middle into a two-section three-piece structure without a magnetic isolation sheet in the middle, so that the axial size of the motor is reduced, the height of the stator iron core is reduced, the height of a motor body is reduced, and the use and installation space of customers is reduced; the magnetic flux leakage of the two sections with the magnetic isolation sheets in the middle is larger than that of the two sections without the magnetic isolation sheets in the middle, and the performance without the magnetic isolation sheets is stronger under the same thickness of the rotor iron core.

Description

Technical Field

[0001] The invention belongs to the field of motor equipment, and in particular relates to a non-magnetic isolation detachable large torque stepping motor. Background Art

[0002] With the development of industrial technology, modern motor equipment technology has become more and more perfect. In the past, the stepper motor rotor structure was a two-section four-piece rotor core with a magnetic isolation plate in the middle. This rotor structure was relatively long, which would occupy a lot of space inside the motor housing. Patent CN217882996U discloses a detachable motor stator, which relates to the technical field of motor stators. The patent includes a motor housing, a bottom cover is provided at one end of the motor housing, the motor housing and the bottom cover are connected by connecting bolts, the motor housing is slidably connected to the motor stator body, the motor stator body and the motor housing are connected by a disassembly mechanism, a plurality of transverse rectangular blocks are fixed to the outside of the motor stator body, a transverse rectangular groove is provided inside the motor housing, and the motor stator body and the motor housing are slidably connected by the cooperation of the transverse rectangular blocks and the transverse rectangular grooves. This patent uses a disassembly mechanism to enable the motor stator body to be disassembled inside the motor housing, and it is more convenient and convenient for the subsequent disassembly and maintenance of the motor stator body; The device still has defects when in use. First, the rotor structure length of the device is relatively large, and the integration of the internal parts of the stepper motor is relatively high, so the device needs to occupy more internal space of the motor casing. Second, when the previous motor casing needs to be disassembled, it is necessary to unscrew all the bolts on the motor casing. This operation consumes a lot of manpower. For motors that need to be frequently disassembled for maintenance, the time taken up by maintenance work will reduce work efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a non-magnetic shielding detachable large torque stepper motor in response to the deficiencies in the prior art. When the device is in use, the motor equipment reduces the axial size of the motor and the height of the stator core by changing the rotor structure from a conventional two-section four-piece rotor core with a magnetic shielding plate in the middle to a two-section three-piece rotor core without a magnetic shielding plate in the middle. The same output torque performance can be achieved while using less material, reducing product material costs and reducing customer installation space. The leakage magnetic field of the two-section rotor with a magnetic shielding plate in the middle will be greater than the leakage magnetic field of the two-section rotor without a magnetic shielding plate in the middle. Under the same rotor core thickness, the performance of the motor without a magnetic shielding plate is better, thereby solving the problems mentioned in the background technology.

[0004] To solve the above problems, the present invention provides the following technical solutions: a non-magnetic isolation detachable large torque stepper motor, comprising a base plate and a casing, wherein the casing is fixed at the top of the base plate, a movable shell is movably provided at the top of the casing, and an opening and closing assembly is provided between the casing and the movable shell; a front cover is provided at the front end of the casing, a rear cover is provided at the rear end of the casing, a main shaft is rotatably inserted between the front cover and the rear cover, a rotor assembly is provided in the middle of the main shaft, the rotor assembly comprises a central rotor, and an auxiliary rotor is provided on both sides of the central rotor, and the width of the auxiliary rotor is half of the width of the central rotor; an extension shaft assembly is provided at the front end of the main shaft, and a torque adjustment assembly is also provided in front of the main shaft.

[0005] Furthermore, the opening and closing assembly includes a movable block on the side wall of the movable shell, a fixed block corresponding to the movable block is arranged on the side wall of the shell, a hanging ring is fixedly installed on the top of the movable block, a guide rod is arranged at the bottom end of the movable block, the guide rod passes through the inside of the fixed block, and a buffer mechanism matching the guide rod is arranged on the fixed block.

[0006] Furthermore, the buffer mechanism includes a spring tube at the bottom of the fixed block, an energy storage spring is mounted on the outer side of the guide rod, the top of the energy storage spring is fixedly connected to the bottom of the movable block, the bottom of the energy storage spring is fixedly connected to the bottom inner wall of the spring tube, and the top of the base plate is provided with an avoidance groove matching the guide rod.

[0007] Furthermore, pin holes are provided on the side walls of the movable shell, the front cover and the rear cover are fixedly connected to the side walls at both ends of the shell respectively, and the movable shell is detachably connected to the side walls of the rear cover via the pins.

[0008] Furthermore, the extension shaft assembly includes a tubular shaft mounted on the main shaft, a keyway is provided on the inner wall of the tubular shaft, a keyway matching the keyway is provided on the outer wall of the main shaft, a square tubular shaft is provided at the outer end of the tubular shaft, and a positioning and propulsion mechanism is provided at the inner end of the tubular shaft.

[0009] Furthermore, the positioning propulsion mechanism includes a propulsion ring at the end of the tube shaft, a propulsion ring is rotatably arranged inside the propulsion ring, a clutch rod is arranged on the side wall of the propulsion ring, a positioning groove is arranged on the side wall of the movable shell, the clutch rod is inserted into the slot of the positioning groove, and the positioning groove includes a plurality of vertical line grooves in a linear array, and the top ends of the vertical line grooves are connected in series through horizontal line grooves.

[0010] Furthermore, the torque adjustment assembly includes a gear box, and the gear box has a first central gear, a first reduction gear and a second reduction gear that are rotatably arranged inside. The central gear is located in the middle position, and the first reduction gear and the second reduction gear are located on both sides. The central gear is respectively meshed with the first reduction gear and the second reduction gear. The axes of the first reduction gear, the second reduction gear and the central gear are all provided with square shafts, and the square shafts can be inserted into the interior of the tube shaft. A disassembly and replacement mechanism is provided at the bottom of the gear box.

[0011] Furthermore, the disassembly and replacement mechanism includes a load-bearing bridge at the bottom of the transmission case, and three positioning pin holes are provided at the bottom of the load-bearing bridge. The positioning pin holes are fixedly connected to the top of the base plate through pin rods, and the vertical spacing of the three positioning pin holes corresponds one by one to the spacing of the three square axes.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects: Firstly, when the device is in use, the motor equipment reduces the axial size of the motor and the height of the stator core by changing the rotor structure from a conventional two-section four-piece rotor core with a magnetic shielding plate in the middle to a two-section three-piece rotor core without a magnetic shielding plate in the middle, thereby reducing the height of the motor body. The same output torque performance can be achieved while using less material, reducing product material costs and reducing customer installation space. The magnetic leakage of the two sections with a magnetic shielding plate in the middle will be greater than the magnetic leakage of the two sections without a magnetic shielding plate in the middle. Under the same rotor core thickness, the performance of the motor without a magnetic shielding plate is better.

[0013] Secondly, when the casing and the movable shell need to be opened, pull out the pin on the end face of the movable shell, and then the movable shell and the back cover can be separated. At this time, the energy storage spring inside the spring tube will push the movable shell upward, so that the components inside the motor casing can be easily debugged and maintained. The square shafts of the center gear, the first reduction gear and the second reduction gear can be connected to the pipe shaft in turn, and then the motor can output power through three square shafts with different torques. The other two gears can also be used as flywheels to store kinetic energy when they are idling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front view of the present invention.

[0015] Figure 2 It is a schematic diagram of a side view of the present invention.

[0016] Figure 3 Schematic diagram of the main axis of the present invention.

[0017] Figure 4 It is a schematic diagram of the positioning groove of the present invention.

[0018] Figure 5 It is a schematic diagram of the spring tube of the present invention.

[0019] Figure 6 It is a schematic diagram of a cross-section of the present invention.

[0020] Figure 7 It is a schematic diagram of the clutch lever of the present invention.

[0021] Figure 8 It is a schematic diagram of the transmission box of the present invention.

[0022] Fig. 9 It is a schematic diagram of the central rotor of the present invention.

[0023] Description of reference numerals: Base plate 1, avoidance groove 101, casing 2, movable casing 201, front cover 3, rear cover 4, main shaft 5, tube shaft 6, propulsion ring 601, spring tube 7, movable block 701, fixed block 702, lifting ring 703, energy storage spring 704, gear box 8, load-bearing bridge 801, positioning pin hole 802, center gear 803, first reduction gear 804, second reduction gear 805, square shaft 806, positioning groove 9, clutch rod 901, center rotor 10, auxiliary rotor 1001. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The present invention provides a non-magnetic isolation detachable large torque stepping motor, such as Figure 1-9As shown, it includes a base plate 1 and a casing 2, the casing 2 is fixed on the top of the base plate 1, a movable shell 201 is movably provided at the top of the casing 2, and an opening and closing component is provided between the casing 2 and the movable shell 201; a front cover 3 is provided at the front end of the casing 2, and a rear cover 4 is provided at the rear end of the casing 2, a main shaft 5 is rotatably inserted between the front cover 3 and the rear cover 4, a rotor assembly is provided in the middle of the main shaft 5, and the rotor assembly includes a central rotor 10, and an auxiliary rotor 1001 is provided on both sides of the central rotor 10, and the width of the auxiliary rotor 1001 is half of the width of the central rotor 10; an extension shaft assembly is provided at the front end of the main shaft 5, and a torque adjustment assembly is also provided in front of the main shaft 5.

[0027] In this embodiment, the motor device reduces the axial size of the motor and the height of the stator core by changing the rotor structure from a conventional two-section four-piece rotor core with a magnetic shielding plate in the middle to a two-section three-piece rotor core without a magnetic shielding plate in the middle, thereby reducing the height of the motor body. The same output torque performance can be achieved while using less material, reducing product material costs and reducing customer installation space. The magnetic leakage of the two sections with a magnetic shielding plate in the middle will be greater than the magnetic leakage of the two sections without a magnetic shielding plate in the middle. Under the same rotor core thickness, the performance of the motor without a magnetic shielding plate is better.

[0028] In a further embodiment of the present invention, Figure 1-5 As shown, the opening and closing assembly includes a movable block 701 on the side wall of the movable shell 201, a fixed block 702 corresponding to the movable block 701 is arranged on the side wall of the shell 2, a hanging ring 703 is fixedly installed on the top of the movable block 701, a guide rod is arranged at the bottom end of the movable block 701, the guide rod passes through the inside of the fixed block 702, and a buffer mechanism matching the guide rod is arranged on the fixed block 702.

[0029] In this embodiment, the movable shell 201 can be lifted upward relative to the casing 2. For motor equipment that needs to frequently open the casing for maintenance, the previous motors need to unscrew all the bolts before the front and rear end covers of the motor can be opened. The motor of the present invention can be opened in two parts, which increases the efficiency of opening the motor casing.

[0030] In a further embodiment of the present invention, Figure 1-5 As shown, the buffer mechanism includes a spring tube 7 at the bottom of the fixed block 702, an energy storage spring 704 is mounted on the outer side of the guide rod, the top of the energy storage spring 704 is fixedly connected to the bottom of the movable block 701, the bottom of the energy storage spring 704 is fixedly connected to the bottom inner wall of the spring tube 7, and the top of the base plate 1 is provided with an avoidance groove 101 matching the guide rod.

[0031] In this embodiment, when the connection between the movable shell 201 and the housing 2 is loosened, the energy storage spring 7040 inside the spring tube 7 will push the movable shell 201 upward, thereby facilitating the debugging and maintenance of the components inside the motor housing.

[0032] In a further embodiment of the present invention, Figure 1-3 As shown, the side wall of the movable shell 201 is provided with pin holes, the front cover 3 and the rear cover 4 are fixedly connected to the side walls of the casing 2 at both ends respectively, and the movable shell 201 is detachably connected to the side wall of the rear cover 4 through the pins.

[0033] In this embodiment, the pin on the end surface of the movable shell 201 is pulled out, and then the movable shell 201 and the rear cover 4 can be separated, and the energy storage spring 7040 will push up the movable shell 201.

[0034] In a further embodiment of the present invention, Figure 6-8 As shown, the extension shaft assembly includes a tubular shaft 6 mounted on the main shaft 5, a keyway is arranged on the inner wall of the tubular shaft 6, a 501 matching the keyway is arranged on the outer wall of the main shaft 5, a square tubular shaft is arranged at the outer end of the tubular shaft 6, and a positioning and propulsion mechanism is arranged at the inner end of the tubular shaft 6.

[0035] In this embodiment, when the base plate 1 is fixed on the building, it is very inconvenient to disassemble and move the base plate 1, and then the tube axis 6 can be lengthened or shortened relative to the main axis 5. Compared with the motor shaft in the prior art, when the position of the previous motor shaft needs to be adjusted, it is necessary to move the motor equipment as a whole, which requires a lot of manpower and time to operate.

[0036] In a further embodiment of the present invention, Figure 6-7 As shown, the positioning propulsion mechanism includes a propulsion ring 601 at the end of the tube shaft 6, a propulsion ring is rotatably arranged inside the propulsion ring 601, a clutch rod 901 is arranged on the side wall of the propulsion ring, a positioning groove 9 is arranged on the side wall of the movable shell 201, the clutch rod 901 is inserted in the slot of the positioning groove 9, and the positioning groove 9 includes a plurality of vertical grooves in a linear array, and the top ends of the vertical grooves are connected in series through horizontal grooves.

[0037] In this embodiment, the staff manually lifts the clutch rod 901 up to disengage it from the vertical line groove, and the clutch rod 901 can be inserted into the horizontal line groove. When the clutch rod 901 enters the vertical line groove at other positions, the push ring at the end of the clutch rod 901 can stimulate the push ring 601 to change its position, thereby realizing the function of conveniently adjusting the length of the tube axis 6.

[0038] In a further embodiment of the present invention, Figure 1-8As shown, the torque adjustment component includes a gear box 8, and the gear box 8 has a first central gear 803, a first reduction gear 804 and a second reduction gear 805 that are rotatably arranged inside. The central gear 803 is in the middle position, and the first reduction gear 804 and the second reduction gear 805 are in the two side positions. The central gear 803 is respectively meshed with the first reduction gear 804 and the second reduction gear 805. The axes of the first reduction gear 804, the second reduction gear 805 and the central gear 803 are all provided with square shafts 806, and the square shafts 806 can be inserted into the interior of the tube shaft 6. A disassembly and replacement mechanism is provided at the bottom of the gear box 8.

[0039] In this embodiment, the square shaft 806 at the center of the central gear 803, the first reduction gear 804 and the second reduction gear 805 can be connected to the tubular shaft 6 in turn, and then the motor can output power through three square shafts 806 with different torques, and the other two gears can also be used as flywheels to store kinetic energy when idling.

[0040] In a further embodiment of the present invention, Figure 1-8 As shown, the disassembly and replacement mechanism includes a load-bearing bridge 801 at the bottom of the transmission case 8, and three positioning pin holes 802 are arranged at the bottom of the load-bearing bridge 801. The positioning pin holes 802 are fixedly connected to the top of the base plate 1 through pin rods, and the vertical spacing of the three positioning pin holes 802 corresponds one by one to the spacing of the three square axes 806.

[0041] In this embodiment, the load-bearing bridge 801 can be fixed on the base plate 1 through three positioning pin holes 802, so that the three square shafts 806 can be connected to the tube shaft 6 in turn.

[0042] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0043] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0044] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A non-magnetic isolation detachable large torque stepping motor, characterized in that: It comprises a base plate (1) and a casing (2), wherein the casing (2) is fixed to the top of the base plate (1), a movable casing (201) is movably provided at the top of the casing (2), and an opening and closing component is provided between the casing (2) and the movable casing (201); A front cover (3) is provided at the front end of the housing (2), a rear cover (4) is provided at the rear end of the housing (2), a main shaft (5) is rotatably inserted between the front cover (3) and the rear cover (4), a rotor assembly is provided in the middle of the main shaft (5), the rotor assembly comprises a central rotor (10), and an auxiliary rotor (1001) is provided on both sides of the central rotor (10), and the width of the auxiliary rotor (1001) is half the width of the central rotor (10); An extension shaft assembly is provided at the front end of the main shaft (5), and a torque adjustment assembly is also provided in front of the main shaft (5).

2. The non-magnetic isolation detachable large torque stepping motor according to claim 1, characterized in that: The opening and closing assembly comprises a movable block (701) on the side wall of the movable shell (201); a fixed block (702) corresponding to the movable block (701) is arranged on the side wall of the housing (2); a lifting ring (703) is fixedly mounted on the top of the movable block (701); a guide rod is arranged at the bottom of the movable block (701); the guide rod passes through the inside of the fixed block (702); and a buffer mechanism matching the guide rod is arranged on the fixed block (702).

3. The non-magnetic isolation detachable large torque stepping motor according to claim 2, characterized in that: The buffer mechanism comprises a spring cylinder (7) at the bottom of a fixed block (702); an energy storage spring (704) is sleeved on the outer side of the guide rod; the top of the energy storage spring (704) is fixedly connected to the bottom of the movable block (701); the bottom of the energy storage spring (704) is fixedly connected to the bottom inner wall of the spring cylinder (7); and the top of the base plate (1) is provided with an avoidance groove (101) matching the guide rod.

4. The non-magnetic isolation detachable large torque stepping motor according to claim 1, characterized in that: The side wall of the movable shell (201) is provided with a pin hole, the front cover (3) and the rear cover (4) are respectively fixedly connected to the side walls at both ends of the housing (2), and the movable shell (201) is detachably connected to the side wall of the rear cover (4) via the pin.

5. The non-magnetic isolation detachable large torque stepping motor according to claim 1, characterized in that: The extension shaft assembly comprises a tube shaft (6) sleeved on the main shaft (5), a keyway is arranged on the inner wall of the tube shaft (6), a (501) matching the keyway is arranged on the outer wall of the main shaft (5), a square tube shaft is arranged at the outer end of the tube shaft (6), and a positioning and propulsion mechanism is arranged at the inner end of the tube shaft (6).

6. The non-magnetic isolation detachable large torque stepping motor according to claim 5, characterized in that: The positioning propulsion mechanism comprises a propulsion ring (601) at the end of the tube shaft (6), a propulsion ring is rotatably arranged inside the propulsion ring (601), a clutch rod (901) is arranged on the side wall of the propulsion ring, a positioning groove (9) is arranged on the side wall of the movable shell (201), the clutch rod (901) is inserted into the groove of the positioning groove (9), and the positioning groove (9) comprises a plurality of vertical line grooves in a linear array, and the top ends of the vertical line grooves are connected in series through horizontal line grooves.

7. The non-magnetic isolation detachable large torque stepping motor according to claim 1, characterized in that: The torque adjustment component comprises a gearbox (8), wherein a central gear (803), a first reduction gear (804) and a second reduction gear (805) are rotatably arranged inside the gearbox (8), wherein the central gear (803) is located in the middle, and the first reduction gear (804) and the second reduction gear (805) are located at two side positions, wherein the central gear (803) is respectively meshed with the first reduction gear (804) and the second reduction gear (805), wherein the axes of the first reduction gear (804), the second reduction gear (805) and the central gear (803) are all provided with square shafts (806), and the square shafts (806) can be inserted into the interior of the tube shaft (6), and a disassembly and replacement mechanism is provided at the bottom of the gearbox (8).

8. The non-magnetic isolation detachable large torque stepping motor according to claim 7, characterized in that: The disassembly and replacement mechanism comprises a load-bearing bridge (801) at the bottom of the transmission case (8), three positioning pin holes (802) being arranged at the bottom of the load-bearing bridge (801), the positioning pin holes (802) being fixedly connected to the top of the base plate (1) via pin rods, and the spacing between the three positioning pin holes (802) in the vertical direction corresponds one to one to the spacing between the three square axes (806).

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