Distance-adjustable wire horse stator structure

Abstract

The invention relates to the technical field of motors, in particular to a distance-adjustable wire motor stator structure. According to the technical scheme, the motor comprises a stator support, a plurality of stator coil adjusting supports are arranged on the peripheral side of the stator support in the circumferential direction of the stator support, and each stator coil adjusting support is provided with a stator coil; the stator coil adjusting support comprises a telescopic support body and a driving device, and the driving device is used for driving the stress piece to move in the width direction of the guide shell so as to adjust the distance between the stator coil and the axis direction of the stator support. The telescopic support body can extend by a certain length in the height direction of the guide shell, so that the distance between a stator coil and a rotor coil is adjusted, and under the condition that the input current and voltage of the motor are fixed, the change of a magnetic field in the motor is changed in a physical adjustment mode, so that the rotating speed of the motor rotor can be adjusted; and the adjustability of the motor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a linear motor stator structure with adjustable pitch. Background Art

[0002] The linear stator structure is suitable for cooperating with the rotor to make it rotate. The structure includes a surrounding wall around the axis, several magnetic pole protrusions, several coils and a wire group. The magnetic pole protrusions are arranged on the circumference of the surrounding wall and are coaxially arranged with the magnet group. The circumference of each magnetic pole protrusion is formed with a recess. The coil ring is arranged on the circumference of the magnetic pole protrusion. Each coil includes a first conductive end formed on the inner edge of the coil and close to the recess, and a second conductive end formed on the outer edge of the coil. The wire group is electrically connected to the first conductive end and the second conductive end of the coil, and cooperates with a control signal to form a control loop.

[0003] There is also a wire motor stator structure, which has six sets of starting coils and six sets of running coils wound with resistor enameled coils on a silicon steel base. This structure can quickly complete the winding operation, save the amount of resistor enameled wire used, and can be safely and evenly laid out, which is suitable for application scenarios that require efficient and uniform wiring.

[0004] The stator structure of the motor can take many forms depending on the specific application scenario and design requirements, but the common feature is that they can all provide efficient and precise motion control. The principle is to drive the rotor to move through the changes in the magnetic field generated by the stator coil and the rotor coil. However, the current control of the rotor speed is generally achieved by controlling the input current of the motor or adjusting the resistance value. There is no physical control method, resulting in poor controllability of the motor. Summary of the invention

[0005] The problem solved by the present invention is: how to adjust the output speed of the motor when the current and voltage input to the motor are constant, so as to ensure the controllability of the motor.

[0006] In order to solve the above problems, the present invention provides a linear motor stator structure with adjustable pitch, comprising a stator bracket, wherein a plurality of stator coil adjustment brackets are arranged on the outer peripheral side of the stator bracket along the circumferential direction thereof, and each of the stator coil adjustment brackets is provided with a stator coil;

[0007] The stator coil--coil adjustment bracket comprises a telescopic bracket body, a guide housing, a stress-bearing sheet, a light spring and a guide rod, wherein the guide housing is fixed to the outer surface of the stator bracket, the stress-bearing sheet is arranged in the guide housing and extends along the height direction of the guide housing, the guide rod is fixed to the back side of the stress-bearing sheet, the guide rod passes through the guide housing and is connected to the telescopic bracket body, the light spring is sleeved on the guide rod, and the stator coil is arranged on the telescopic bracket body;

[0008] It also includes a driving device, which is used to drive the force-bearing plate to move along the width direction of the guide shell to adjust the distance between the stator coil and the axial direction of the stator bracket.

[0009] In an optional embodiment, a rotor bearing is provided on the inner circumference of the stator bracket, and the rotor bearing is used to mount the motor rotor.

[0010] In an optional embodiment, the driving device includes an annular tube body and a plurality of shunt tubes, one end of each of the shunt tubes is connected to the annular tube body, the other ends of each of the shunt tubes extend into corresponding guide housings, and at least one high-pressure nozzle facing the force-bearing sheet is installed on the shunt tube;

[0011] It also includes a pipeline interface, which is arranged on the annular tube body and is used to connect to an external air pump output interface.

[0012] In an optional embodiment, the cross-section of the stress-bearing plate is V-shaped, and the width of the stress-bearing plate matches the width of the guide shell.

[0013] In an optional embodiment, each side of the guide shell is provided with an air leakage hole. When the driving device drives the force-bearing plate to move along the height direction of the guide shell, the air leakage hole is exposed, and at least a part of the gas ejected by the driving device can overflow through the air leakage hole.

[0014] In an optional embodiment, baffles are provided at both ends of the telescopic bracket body, the stator coil is provided between the two baffles, two adjacent stator coils are connected via their ends, and there is a bent extension section between the stator coils.

[0015] In an optional embodiment, a stator structure mounting frame is provided on the outer side of the stator bracket, and the stator structure mounting frame is used to be mounted on the inner wall of the motor housing.

[0016] In an optional embodiment, air holes are provided on the surface of the motor housing.

[0017] Compared with the prior art, the adjustable-pitch linear motor stator structure of the present invention has the following beneficial effects:

[0018] By arranging the stator coil on the telescopic bracket body and movably arranging the light spring and the guide rod, the telescopic bracket body can be extended to a certain length along the height direction of the guide shell, so as to adjust the distance between the stator coil and the rotor coil. When the input current and voltage of the motor are constant, the internal magnetic field of the motor is changed by physical adjustment, so as to adjust the speed of the motor rotor and improve the controllability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 Schematic diagram of the structure of the adjustable-pitch linear motor stator structure in an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0022] Figure 3 The schematic diagram of the structure of the stator coil of the adjustable-pitch linear motor stator structure in the embodiment of the present invention is removed;

[0023] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0024] Reference numerals:

[0025] 110. Stator coil adjustment bracket; 111. Telescopic bracket body; 112. Guide shell; 113. Light spring; 114. Guide rod; 115. Stress plate; 116. Air vent; 120. Rotor bearing; 130. Stator bracket; 140. Stator coil; 200. Annular pipe body; 210. Diverter pipe; 220. High-pressure nozzle; 230. Pipeline interface; 300. Stator structure mounting frame. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0030] like Figures 1 to 4 As shown, an embodiment of the present invention provides a linear motor stator structure with adjustable pitch, including a stator bracket 130, a plurality of stator coil adjustment brackets 110 are arranged on the outer peripheral side of the stator bracket 130 along the circumferential direction thereof, and a stator coil 140 is arranged on each of the stator coil adjustment brackets 110;

[0031] Typically, the stator coil adjustment bracket 110 is arranged on the surface of the stator bracket 130 in a circular arrangement, and the stator coil 140 is evenly distributed along the circumference of the stator bracket 130, so that the magnetic field inside the motor is more uniform, and the spacing between the stator coil 140 and the motor rotor is usually fixed, that is, the distance between the stator coil 140 and the motor rotor coil is fixed, resulting in the motor being able to control the speed of the rotor only by turning the power on and off.

[0032] Further, the stator coil adjustment bracket 110 includes a telescopic bracket body 111, a guide housing 112, a stress-bearing sheet 115, a light spring 113 and a guide rod 114, wherein the guide housing 112 is fixed to the outer surface of the stator bracket 130, the stress-bearing sheet 115 is arranged in the guide housing 112 and extends along the height direction of the guide housing 112, the guide rod 114 is fixed to the back side of the stress-bearing sheet 115, the guide rod 114 penetrates the guide housing 112 and is connected to the telescopic bracket body 111, the light spring 113 is sleeved on the guide rod 114, and the stator coil 140 is arranged on the telescopic bracket body 111;

[0033] The guide housing 112 further includes a driving device for driving the force-bearing sheet 115 to move along the width direction of the guide housing 112 to adjust the distance between the stator coil 140 and the stator bracket 130 in the axial direction.

[0034] By arranging the stator coil 140 on the telescopic bracket body 111 and movably arranging the light spring 113 and the guide rod 114, the telescopic bracket body 111 can be extended to a certain length in the height direction of the guide shell 112, so as to adjust the distance between the stator coil 140 and the rotor coil. When the input current and voltage of the motor are constant, the magnetic field inside the motor can be changed by physical adjustment, so as to adjust the speed of the motor rotor and improve the controllability of the motor.

[0035] It should be noted that a rotor bearing 120 is provided on the inner circumference of the stator bracket 130, and the rotor bearing 120 is used to install the motor rotor. Generally, the rotor is the output shaft of the motor, and a rotor coil is provided on it to cooperate with the stator coil 140 to rotate the output shaft. The rotor bearing 120 makes the motor rotor rotate more smoothly.

[0036] Furthermore, the driving device includes an annular tube body 200 and a plurality of shunt tubes 210, one end of each of the shunt tubes 210 is connected to the annular tube body 200, and the other ends of each of the shunt tubes 210 extend into corresponding guide housings 112, and at least one high-pressure nozzle 220 facing the force-bearing sheet 115 is installed on the shunt tube 210;

[0037] It also includes a pipeline interface 230, which is arranged on the annular tube body 200, and is used to connect to an external air pump output interface.

[0038] High-pressure gas is pumped into the annular tube body 200 through an external air pump, and the high-pressure gas is ejected through the shunt pipe 210 and the high-pressure nozzle 220, and directly acts on the stress-bearing piece 115, thereby driving the stress-bearing piece 115 to move along the height direction of the guide shell 112, thereby making the stator coil 140 away from the rotor coil. During the movement of the telescopic bracket body 111 and the guide rod 114, the lightweight spring 113 is compressed. When the force applied to the stress-bearing piece 115 is released, the telescopic bracket body 111 can be reset by the lightweight spring 113.

[0039] The cross section of the stress-bearing piece 115 is V-shaped, and the width of the stress-bearing piece 115 matches the width of the guide housing 112 .

[0040] Each side of the guide shell 112 is provided with an air leakage hole 116 . When the driving device drives the force-bearing plate 115 to move along the height direction of the guide shell 112 , the air leakage hole 116 is exposed, and at least a part of the gas ejected by the driving device can overflow through the air leakage hole 116 .

[0041] It should be noted that by providing an air vent 116 on the guide housing 112, part of the high-pressure gas can overflow through the air vent 116, and in this embodiment, the air vent 116 points to the position of the stator coil 140, and the high-pressure gas acts on the stator coil 140, so that the stator coil 140 can be dissipated to reduce the heat generated when the stator coil 140 is energized. Furthermore, a stator structure mounting frame 300 is provided on the outer side of the stator bracket 130, and the stator structure mounting frame 300 is used to be installed on the inner wall of the motor housing. The surface of the motor housing is provided with air holes. The stator structure mounting frame 300 is used as a carrier of the stator structure to facilitate its fixation in the motor housing. By providing air holes on the surface of the motor housing, it is convenient for the high-pressure gas to dissipate the heat generated by the stator coil 140 being energized out of the motor housing through airflow, thereby ensuring the efficient operation of the motor.

[0042] Blocking pieces are provided at both ends of the telescopic support body 111, and the stator coil 140 is provided between the two blocking pieces. Two adjacent stator coils 140 are connected through their ends, and there is a bent extension section between the stator coils 140. Since the stator coil 140 is on the telescopic support body 111 and moves with the movement of the telescopic support body 111, the distance between the stator coils 140 will increase during the movement. In this embodiment, by providing a bent extension section, the distance change between the stator coils 140 can be adapted.

[0043] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A linear motor stator structure with adjustable pitch, characterized in that: It comprises a stator bracket (130), wherein a plurality of stator coil adjustment brackets (110) are arranged on the outer peripheral side of the stator bracket (130) along the circumferential direction thereof, and each of the stator coil adjustment brackets (110) is provided with a stator coil (140); The stator coil adjustment bracket (110) comprises a telescopic bracket body (111), a guide housing (112), a stress-bearing sheet (115), a light spring (113) and a guide rod (114); the guide housing (112) is fixed to the outer surface of the stator bracket (130); the stress-bearing sheet (115) is arranged in the guide housing (112) and extends along the height direction of the guide housing (112); the guide rod (114) is fixed to the back side of the stress-bearing sheet (115); the guide rod (114) penetrates the guide housing (112) and is connected to the telescopic bracket body (111); the light spring (113) is sleeved on the guide rod (114); and the stator coil (140) is arranged on the telescopic bracket body (111); It also includes a driving device, which is used to drive the force-bearing sheet (115) to move along the width direction of the guide housing (112) to adjust the distance between the stator coil (140) and the stator bracket (130) in the axial direction.

2. The adjustable pitch linear motor stator structure according to claim 1, characterized in that: A rotor bearing (120) is provided on the inner circumference of the stator bracket (130), and the rotor bearing (120) is used to install the motor rotor.

3. The adjustable pitch linear motor stator structure according to claim 1, characterized in that: The driving device comprises an annular tube body (200) and a plurality of shunt tubes (210), one end of the plurality of shunt tubes (210) being connected to the annular tube body (200), the other ends of the plurality of shunt tubes (210) respectively extending into corresponding guide housings (112), and at least one high-pressure nozzle (220) facing the force-bearing sheet (115) being installed on the shunt tube (210); It also comprises a pipeline interface (230), wherein the pipeline interface (230) is arranged on the annular pipe body (200), and the pipeline interface (230) is used to be connected to an external air pump output interface.

4. The adjustable pitch linear motor stator structure according to claim 3 is characterized in that: The cross section of the stress-bearing piece (115) is V-shaped, and the width of the stress-bearing piece (115) matches the width of the guide housing (112).

5. The adjustable pitch linear motor stator structure according to claim 4, characterized in that: Each of the guide housings (112) is provided with an air leakage hole (116) on its side. When the driving device drives the force-bearing sheet (115) to move along the height direction of the guide housing (112), the air leakage hole (116) is exposed, and at least a portion of the gas ejected by the driving device can overflow through the air leakage hole (116).

6. The adjustable pitch linear motor stator structure according to claim 1, characterized in that: Blocking pieces are provided at both ends of the telescopic bracket body (111); the stator coil (140) is provided between the two blocking pieces; two adjacent stator coils (140) are connected via their ends; and there is a bent extension section between the stator coils (140).

7. The adjustable pitch linear motor stator structure according to claim 1, characterized in that: A stator structure mounting frame (300) is arranged on the outer side of the stator bracket (130), and the stator structure mounting frame (300) is used to be mounted on the inner wall of the motor housing.

8. The adjustable pitch linear motor stator structure according to claim 7, characterized in that: The surface of the motor housing is provided with air holes.

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