Low-noise stepping motor

Abstract

The utility model provides a low-noise stepping motor, which belongs to the technical field of stepping motors and comprises a motor main body and a motor output shaft rotatably mounted on the left end face of the motor main body, a circuit module is fixedly mounted on the right end face of the motor main body, and a buffer box is arranged below the motor main body. The buffer box is connected with the motor body through a noise reduction mechanism, a heat exchange coil is fixedly installed on the side wall of the motor body in a winding mode, and cooling mechanisms are arranged at the input end and the output end of the heat exchange coil. Through the arrangement of the noise reduction mechanism, under the matching action of the sound absorption cotton layer, the damping spring, the hollow plate and the like, vibration force generated by the motor main body can be effectively decomposed, noise pollution caused by working of the motor main body is further remarkably reduced, meanwhile, the cooling mechanism is arranged, and when the circulating pump works, the cooling mechanism can cool the motor main body. And clear water in the buffer box can continuously flow in the heat exchange coil, so that sufficient heat dissipation and cooling of the motor main body can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of stepping motors, in particular to a low-noise stepping motor. Background Art

[0002] With the continuous development of the motor industry, the scope and connotation of motor products are also constantly expanding. Among them, stepper motors can output larger torques without a reducer, and are thus used in various fields such as metallurgy, electric power, petrochemicals, coal, mining, building materials, papermaking, municipal administration, water conservancy, shipbuilding, port loading and unloading, etc.

[0003] After searching, a permanent magnet stepper motor is proposed in the announcement number CN213817383U. The permanent magnet stepper motor includes a motor housing, a stator assembly, a rotor assembly, a rear bottom plate, and a control circuit; the stator assembly is installed on the inner surface of the motor housing, and includes a skeleton and enameled wire; the skeleton includes four sequentially stacked pole tooth inner yoke groups embedded in an engineering plastic base frame, and each pole tooth inner yoke group is composed of two pole tooth inner yokes arranged opposite to each other.

[0004] In actual use, the stepper motors in the above patent documents often need to be driven in a high temperature or hot environment. The harsh use environment will make it difficult for the motor to dissipate heat. As the heat generated by the motor accumulates, the temperature of the motor itself will rise, affecting the working efficiency of the motor and even causing the motor to overload and stop. At the same time, due to working at high temperatures, the internal lubricating oil is consumed very quickly, resulting in a large noise when the motor is working, affecting the working environment of the workers. Therefore, how to invent a low-noise stepper motor to improve these problems has become a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a low-noise stepping motor, aiming to improve the problems raised in the above background technology.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a low-noise stepper motor, comprising a motor body and a motor output shaft rotatably mounted on the left end surface of the motor body, a circuit module fixedly mounted on the right end surface of the motor body, a buffer box arranged below the motor body, the buffer box and the motor body being connected via a noise reduction mechanism, a heat exchange coil wound and fixedly mounted on the side wall of the motor body, and cooling mechanisms being arranged at the input and output ends of the heat exchange coil.

[0008] Preferably, the noise reduction mechanism includes support columns fixedly mounted on the left and right sides of the lower end surface of the motor body, and a limit plate fixedly mounted on the side walls of the support columns, an extrusion seat is fixedly mounted on the lower end surface of the support column, a damping spring is wound around the side wall of the support column, and the support column is connected through the buffer box.

[0009] By adopting the above technical solution, the range of up and down movement of the support column can be restricted to a certain extent.

[0010] Preferably, the two ends of the damping spring are respectively fixedly connected to the upper end surface of the buffer box and the lower side wall of the limit plate, support plates are fixedly installed on the left and right sides of the bottom surface of the inner cavity of the buffer box, a transmission rod is slidably installed in the inner cavity of the support plate, a hollow plate is fixedly installed on the left side of the side wall of the transmission rod, and a reset spring is wound and installed on the left side wall of the transmission rod.

[0011] Preferably, the two ends of the return spring are respectively fixedly connected to the end face of the hollow plate and the side wall of the support plate, the hollow plate is fitted with the bottom surface of the inner cavity of the buffer box, and a movable seat is fixedly installed on the right end face of the transmission rod. The cross-sections of the extrusion seat and the movable seat in the vertical direction are both trapezoidal, and the inclined surfaces of the extrusion seat and the movable seat are fitted.

[0012] By adopting the above technical solution, when the extrusion seat moves downward, the movable seat can be driven to move toward the middle of the inner cavity of the buffer box.

[0013] Preferably, the support column is composed of a support layer, a sound-absorbing cotton layer and a waterproof layer, the waterproof layer, the sound-absorbing cotton layer and the support layer are distributed in sequence from the outside to the inside, the sound-absorbing cotton layer is composed of a small molecule honeycomb panel, and the support layer is made of rigid carbon steel.

[0014] By adopting the above technical solution, with the cooperation of the sound-absorbing cotton layer, the noise generated by the vibration of the motor body can be absorbed, thereby reducing the noise pollution generated by the operation of the entire equipment.

[0015] Preferably, the cooling mechanism includes corrugated connecting pipes fixedly mounted on the input and output ends of the heat exchange coil, and a circulating pump fixedly mounted on the bottom surface of the inner cavity of the buffer box, and the circulating pump is connected to the corrugated connecting pipe at either end.

[0016] By adopting the above technical solution, clean water can flow and circulate in the heat exchange coil, and fully exchange heat with the surface wall of the motor body, so as to improve the heat dissipation effect of the entire equipment.

[0017] The beneficial effects of the utility model are:

[0018] The stepper motor can effectively decompose the vibration force generated by the motor body through the setting of the noise reduction mechanism, with the cooperation of the sound-absorbing cotton layer, the damping spring and the hollow plate, reduce the amplitude of the up and down shaking of the motor body, and thus significantly reduce the noise pollution caused by the operation of the motor body. At the same time, a cooling mechanism is provided. When the circulating pump is working, the clean water in the buffer box can continuously flow in the heat exchange coil, fully contact the surface wall of the motor body, and perform heat exchange, so as to improve the cooling and heat dissipation effect of the entire stepper motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of a low-noise stepping motor provided by an embodiment of the utility model;

[0021] Figure 2 It is a right-view overall structural schematic diagram of a low-noise stepping motor provided in an embodiment of the utility model;

[0022] Figure 3 It is a schematic cross-sectional structure diagram of a buffer box of a low-noise stepping motor provided by an embodiment of the utility model;

[0023] Figure 4 It is a schematic cross-sectional structure diagram of a buffer box of a low-noise stepping motor provided by an embodiment of the utility model;

[0024] Figure 5 It is a schematic cross-sectional structure diagram of a support column of a low-noise stepper motor provided by an embodiment of the utility model.

[0025] In the figure: 1. Motor body; 2. Motor output shaft; 3. Circuit module; 4. Buffer box; 5. Noise reduction mechanism; 51. Support column; 511. Support layer; 512. Sound-absorbing cotton layer; 513. Waterproof layer; 52. Limit plate; 53. Extrusion seat; 54. Damping spring; 55. Support plate; 56. Transmission rod; 57. Hollow plate; 58. Reset spring; 59. Movable seat; 6. Heat exchange coil; 7. Cooling mechanism; 71. Corrugated connecting pipe; 72. Circulation pump. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example

[0028] Reference Figure 1-5 A low-noise stepper motor comprises a motor body 1, and a motor output shaft 2 rotatably mounted on the left end surface of the motor body 1, a circuit module 3 is fixedly mounted on the right end surface of the motor body 1, a buffer box 4 is arranged below the motor body 1, the buffer box 4 is connected to the motor body 1 through a noise reduction mechanism 5, a heat exchange coil 6 is fixedly mounted on the side wall of the motor body 1, and a cooling mechanism 7 is arranged at the input and output ends of the heat exchange coil 6.

[0029] Furthermore, the noise reduction mechanism 5 includes a support column 51 fixedly installed on the left and right sides of the lower end surface of the motor body 1, and a limit plate 52 fixedly installed on the side wall of the support column 51. The lower end surface of the support column 51 is fixedly installed with an extrusion seat 53, and the side wall of the support column 51 is wound with a damping spring 54. The support column 51 is connected through the buffer box 4, and the two ends of the damping spring 54 are respectively fixedly connected to the upper end surface of the buffer box 4 and the lower side wall of the limit plate 52. The left and right sides of the bottom surface of the inner cavity of the buffer box 4 are fixedly installed with support plates 55, and the support plates A transmission rod 56 is slidably installed in the inner cavity of 55, and a hollow plate 57 is fixedly installed on the left side wall of the transmission rod 56. A return spring 58 is wound and installed on the left side wall of the transmission rod 56. The two ends of the return spring 58 are respectively fixedly connected to the end surface of the hollow plate 57 and the side wall of the support plate 55. The hollow plate 57 fits with the bottom surface of the inner cavity of the buffer box 4, and a movable seat 59 is fixedly installed on the right end surface of the transmission rod 56. The cross-sections of the extrusion seat 53 and the movable seat 59 in the vertical direction are both trapezoidal, and the inclined surfaces of the extrusion seat 53 and the movable seat 59 fit together.

[0030] It should be noted that: when the motor body 1 starts running, under the horizontal limit constraint of the buffer box 4 on the support column 51, the vibration force generated when the motor body 1 is working can only make the support column 51 move upward or downward. Through the cooperation of the damping spring 54, the extrusion seat 53 and the movable seat 59, the amplitude of the up and down movement of the motor body 1 can be reduced, effectively reducing the noise pollution caused by the operation of the entire equipment.

[0031] Furthermore, the support column 51 is composed of a support layer 511, a sound-absorbing cotton layer 512 and a waterproof layer 513. The waterproof layer 513, the sound-absorbing cotton layer 512 and the support layer 511 are distributed from the outside to the inside. The sound-absorbing cotton layer 512 is composed of a small molecule honeycomb panel, and the support layer 511 is made of rigid carbon steel.

[0032] It should be noted that: through the provision of the waterproof layer 513, it is possible to prevent the clean water in the buffer box 4 from corroding the support column 51, thereby ensuring the good service life of the support column 51. Through the provision of the support layer 511, the connection strength of the entire support column 51 when used as a support member is ensured. Through the provision of the sound-absorbing cotton layer 512, the noise generated by the vibration of the motor body 1 can be absorbed, further reducing the noise pollution generated during the operation of the entire equipment.

[0033] Furthermore, the cooling mechanism 7 includes a corrugated connecting pipe 71 fixedly mounted on the input and output ends of the heat exchange coil 6, and a circulating pump 72 fixedly mounted on the bottom surface of the inner cavity of the buffer box 4, the circulating pump 72 is connected to the corrugated connecting pipe 71 at either end.

[0034] The working principle of a low-noise stepper motor:

[0035] Before the equipment is put into operation, the user first injects a large amount of clean water (or a coolant with a large specific heat capacity) into the buffer box 4, so that the capacity of the clean water is greater than two-thirds of the volume of the inner cavity of the buffer box 4;

[0036] When the motor body 1 starts to run, under the horizontal limit constraint of the buffer box 4 on the support column 51, the vibration force generated by the motor body 1 during operation can only make the support column 51 move upward or downward. The tension of the damping spring 54 can constrain the power of the motor body 1 to move upward, so as to reduce the amplitude of the upward movement of the motor body 1. When the support column 51 moves downward, the elastic force of the damping spring 54 reduces the amplitude of the downward movement of the motor body 1 to a certain extent. At the same time, when the support column 51 moves downward, the extrusion seat 53 can squeeze the movable seat 59 to move the movable seat 59 to the left side of the support plate 55. At this time, the reset spring 58 is stretched, and the transmission rod 56 will also drive the hollow plate 57 to move to the left. Under the constraint of the damping of the clean water in the buffer box 4 on the hollow plate 57, the amplitude of the downward movement of the extrusion seat 53 can be further prevented. Therefore, through the above, the entire device can reduce the amplitude of the up and down movement of the motor body 1 under the action of the noise reduction mechanism 5, thereby effectively reducing the noise pollution caused by the operation of the entire device.

[0037] The waterproof layer 513 can prevent the clean water in the buffer box 4 from corroding the support column 51, thereby ensuring a good service life of the support column 51. The support layer 511 ensures the connection strength of the entire support column 51 when it is used as a support member. The sound-absorbing cotton layer 512 can absorb the noise generated when the motor body 1 vibrates, thereby further reducing the noise pollution generated when the entire device is running.

[0038] By starting the circulation pump 72, the clean water in the inner cavity of the buffer box 4 can enter the corrugated connecting pipe 71 at one end, and then be injected into the buffer box 4 from the corrugated connecting pipe 71 at the other end. At this time, the clean water can flow and circulate in the heat exchange coil 6, absorb the heat on the surface of the machine when the motor body 1 is working, and then mix with a large amount of clean water in the buffer box 4 to neutralize and cool it down, and fully exchange heat with the motor body 1 to improve the heat dissipation effect of the entire equipment.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0041] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A low-noise stepper motor, comprising a motor body (1), and a motor output shaft (2) rotatably mounted on the left end surface of the motor body (1), a circuit module (3) being fixedly mounted on the right end surface of the motor body (1), characterized in that: A buffer box (4) is provided below the motor body (1); the buffer box (4) and the motor body (1) are connected via a noise reduction mechanism (5); a heat exchange coil (6) is fixedly installed and wound around the side wall of the motor body (1); and cooling mechanisms (7) are provided at the input and output ends of the heat exchange coil (6).

2. A low-noise stepper motor according to claim 1, characterized in that: The noise reduction mechanism (5) comprises support columns (51) fixedly mounted on the left and right sides of the lower end surface of the motor body (1), and a limit plate (52) fixedly mounted on the side wall of the support column (51); an extrusion seat (53) is fixedly mounted on the lower end surface of the support column (51); a damping spring (54) is wound around the side wall of the support column (51); and the support column (51) is connected to the buffer box (4) through a through hole.

3. A low-noise stepper motor according to claim 2, characterized in that: The two ends of the damping spring (54) are respectively fixedly connected to the upper end surface of the buffer box (4) and the lower side wall of the limit plate (52); support plates (55) are fixedly installed on the left and right sides of the bottom surface of the inner cavity of the buffer box (4); a transmission rod (56) is slidably installed in the inner cavity of the support plate (55); a hollow plate (57) is fixedly installed on the left side of the side wall of the transmission rod (56); and a return spring (58) is wound and installed on the left side wall of the transmission rod (56).

4. A low-noise stepping motor according to claim 3, characterized in that: The two ends of the return spring (58) are respectively fixedly connected to the end surface of the hollow plate (57) and the side wall of the support plate (55); the hollow plate (57) is in contact with the bottom surface of the inner cavity of the buffer box (4); a movable seat (59) is fixedly installed on the right end surface of the transmission rod (56); the cross-sections of the extrusion seat (53) and the movable seat (59) in the vertical direction are both trapezoidal; the inclined surfaces of the extrusion seat (53) and the movable seat (59) are in contact with each other.

5. A low-noise stepping motor according to claim 2, characterized in that: The support column (51) is composed of a support layer (511), a sound-absorbing cotton layer (512) and a waterproof layer (513); the waterproof layer (513), the sound-absorbing cotton layer (512) and the support layer (511) are sequentially arranged from the outside to the inside; the sound-absorbing cotton layer (512) is composed of a small molecule honeycomb panel; and the support layer (511) is made of rigid carbon steel.

6. A low-noise stepper motor according to claim 1, characterized in that: The cooling mechanism (7) comprises a corrugated connecting pipe (71) fixedly mounted on the input and output ends of the heat exchange coil (6), and a circulating pump (72) fixedly mounted on the bottom surface of the inner cavity of the buffer box (4), wherein the circulating pump (72) is connected to the corrugated connecting pipe (71) at either end.

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