Permanent magnet synchronous traction type control device structure

Abstract

The utility model relates to the technical field of elevators, in particular to a permanent magnet synchronous traction type control device structure which comprises an electric control portion and a mechanical transmission portion. The device further comprises a middle cover part. A magnetic induction groove is formed in the center of the front groove of the middle cover part; a magnet groove corresponding to the magnetic induction groove is formed in the center of the rear groove of the middle cover part; the electric control part is fixed in the front groove of the middle cover part, and a magnetic induction piece of the electric control part is accommodated in the magnetic induction groove; a permanent magnet is arranged at the rotor end part of the mechanical transmission part, the front part of the mechanical transmission part is fixed in the rear groove of the middle cover part, and the permanent magnet is accommodated in the magnet groove; therefore, the electric control area and the mechanical area are isolated, and the working stability of the two areas is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a permanent magnet synchronous traction control device structure. Background Art

[0002] The invention and use of elevators have a history of nearly a hundred years. The door control system of the elevator is a relatively important part. It controls the opening and closing of the door. Since the system is a moving part, it has a very important impact on the reliability of the entire elevator. According to statistics from internal industry data, 60% or more of the failures of an elevator are caused by this system. The original elevator door control system consists of independent "inverters", "asynchronous motors", "deceleration devices", "elevator door motion devices", "door opening deceleration, door opening position switch", "door closing deceleration, door closing position switch". These components constitute a complete system. The system often has a series of fault problems, which are solved by the Chinese patent with application number 2019107678032: a permanent magnet synchronous traction elevator door integrated control device.

[0003] The permanent magnet synchronous traction method of this permanent magnet synchronous traction elevator door integrated control device is: the transmission center shaft passes through the middle cover plate, and the information collection magnetic beads on one end of the transmission center shaft are magnetically induced with the collection chip of the control unit, so that the control unit can obtain the rotation speed of the transmission center shaft and realize the synchronous traction function.

[0004] However, the coordination between the middle cover plate, the transmission center shaft and the control unit will lead to unclear boundaries between the mechanical area and the electric control area. The transmission center shaft located in the mechanical area crosses the electric control area during rotation, and the shaking caused by its rotation directly or indirectly affects the control unit (i.e., the electric control board) located in the electric control area, causing the electric control board to work unstably. To solve the shaking problem, the electric control board is fixed by plastic sealing, but since the transmission center shaft can pass through the middle cover plate to the electric control area, during the plastic sealing, the plastic sealing glue will penetrate into the mechanical area along the shaft hole of the middle cover plate, which will directly or indirectly affect the operation of the mechanical area. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to propose a permanent magnet synchronous traction control device structure to isolate the electric control area and the mechanical area to ensure the working stability of the two areas.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A permanent magnet synchronous traction control device structure, comprising an electric control part and a mechanical transmission part; further comprising a middle cover part; a magnetic induction slot is arranged at the center of a front slot of the middle cover part, and a magnet slot is arranged at the center of a rear slot of the middle cover part corresponding to the magnetic induction slot;

[0008] The electric control part is fixed in the front groove of the middle cover part, and the magnetic induction component of the electric control part is accommodated in the magnetic induction groove;

[0009] A permanent magnet is disposed at the rotor end of the mechanical transmission part, the front part of the mechanical transmission part is fixed in the rear slot of the middle cover part, and the permanent magnet is accommodated in the magnet slot.

[0010] Furthermore, the magnetic induction component is far away from the slot wall and the slot bottom of the magnetic induction slot, and the permanent magnet is far away from the slot wall and the slot bottom of the magnet slot.

[0011] Furthermore, the distance from the magnetic induction component to the bottom of the magnetic induction slot is 1 mm, the distance from the permanent magnet to the bottom of the magnet slot is 0.2 mm, and the distance from the bottom of the magnetic induction slot to the bottom of the magnet slot is 1 mm.

[0012] Furthermore, the magnetic induction slot and the magnet slot are both made of aluminum.

[0013] Furthermore, a bearing groove is provided in the center of the rear groove of the middle cover part, the magnet groove is arranged in the bearing groove, and the bearing of the mechanical transmission part is accommodated in the bearing groove.

[0014] Furthermore, the bearing groove is made of aluminum material.

[0015] Furthermore, the magnetic induction slot, the magnet slot and the bearing slot are all circular slots.

[0016] The technical solution provided by the utility model can include the following beneficial effects: a magnetic induction slot is arranged in the center of the front slot of the middle cover part, and a magnet slot is arranged in the center of the rear slot of the middle cover part corresponding to the magnetic induction slot, thereby providing a positioning point for the magnetic induction component and the permanent magnet; when the electric control part is fixed in the front slot of the middle cover part, so that the magnetic induction component is accommodated in the magnetic induction slot, and the front part of the mechanical transmission part is fixed in the rear slot of the middle cover part, so that the permanent magnet is accommodated in the magnet slot, it is ensured that the magnetic induction component and the permanent magnet are in a positive corresponding position, and after the permanent magnet forms a rotating magnetic field as the rotor rotates, the magnetic field change can be directly sensed by the magnetic induction component through the magnetic induction slot and the slot bottom of the magnet slot, thereby identifying the rotor speed, direction and other data; thereby, the middle cover part is used to completely isolate the electric control area and the mechanical area, and the two sides do not affect each other, thereby ensuring the working stability of the two areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an assembly diagram of a permanent magnet synchronous traction control device structure of one embodiment of the utility model.

[0018] Figure 2 Yes Figure 1 Rear view of the middle cover shown.

[0019] Figure 3 Yes Figure 1 A cross-sectional view of the structure of a permanent magnet synchronous traction control device is shown.

[0020] Figure 4 Yes Figure 3 An enlarged view of section A is shown.

[0021] Among them: an electric control part 1 , a mechanical transmission part 2 , a middle cover part 3 , a magnetic induction slot 31 , a magnet slot 32 , a permanent magnet 21 , a bearing 22 , and a rotor 23 . DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0024] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Combine the following Figures 1 to 4 , describing a permanent magnet synchronous traction control device structure of an embodiment of the utility model.

[0027] A permanent magnet synchronous traction control device structure, comprising an electric control part 1 and a mechanical transmission part 2; and also comprising a middle cover part 3; a magnetic induction slot 31 is provided at the center of the front slot of the middle cover part 3, and a magnet slot 32 is provided at the center of the rear slot of the middle cover part 3 corresponding to the magnetic induction slot 31;

[0028] The electric control part 1 is fixed in the front groove of the middle cover part 3, and the magnetic induction component 11 of the electric control part 1 is accommodated in the magnetic induction groove 31;

[0029] A permanent magnet 21 is provided at the end of the rotor 23 of the mechanical transmission part 2 . The front part of the mechanical transmission part 2 is fixed in the rear slot of the middle cover part 3 , and the permanent magnet 21 is accommodated in the magnet slot 32 .

[0030] In a preferred embodiment of a permanent magnet synchronous traction control device structure of the utility model, as Figures 1 to 4 As shown, a magnetic induction slot 31 is arranged in the center of the front slot of the middle cover 3, and a magnet slot 32 is arranged in the center of the rear slot of the middle cover 3 corresponding to the magnetic induction slot 31, thereby providing positioning points for the magnetic induction component 11 (usually a magnetic induction encoder installed on the bottom surface of the electric control board) and the permanent magnet 21; when the electric control part 1 is fixed in the front slot of the middle cover 3, so that the magnetic induction component 11 is accommodated in the magnetic induction slot 31, and the front part of the mechanical transmission part 2 is fixed in the rear slot of the middle cover 3, so that the permanent magnet 21 is accommodated in the magnet slot 32, it is ensured that the magnetic induction component 11 and the permanent magnet 21 are in a positive corresponding position, and after the permanent magnet 21 forms a rotating magnetic field as the rotor 23 rotates, the magnetic induction component 11 can directly sense the magnetic field change through the bottom of the magnetic induction slot 31 and the magnet slot 32, thereby identifying the speed, direction and other data of the rotor 23; thereby, the middle cover 3 is used to completely isolate the electric control area and the mechanical area, and the two sides do not affect each other, thereby ensuring the working stability of the two areas.

[0031] Furthermore, the magnetic induction element 11 is away from the slot wall and the slot bottom of the magnetic induction slot 31 , and the permanent magnet 21 is away from the slot wall and the slot bottom of the magnet slot 32 .

[0032] In this embodiment, even if the middle cover 3 has isolated the shaking caused by the rotor in the mechanical area, the permanent magnet synchronous traction control device will still be subjected to external forces (such as impact, falling, shaking, etc.) from time to time during daily work, and dust, moisture, etc. will invade the inside of the device, and the precision components such as the electric control board in the electric control part 1 will still be greatly affected. Therefore, in order to protect the electric control part 1 from the influence of the external environment, prevent dust, moisture, etc. from entering the inside of the electric control board, and improve the reliability and service life of the electric control part 1, the electric control part 1 will be partially or completely sealed, so the magnetic induction component 11 needs to be away from the groove wall and groove bottom of the magnetic induction groove 31, and a plastic sealing space is reserved for the magnetic induction component 11 to be sealed to prevent the magnetic induction component 11 from being affected by the outside world. Since the permanent magnet 21 will rotate with the rotation of the rotor 23, if it contacts the groove body of the magnet groove 32, it will cause the permanent magnet 21 or the magnet groove 32 to wear during rotation, so the permanent magnet 21 needs to be away from the groove wall and groove bottom of the magnet groove 32.

[0033] Furthermore, the distance from the magnetic induction element 11 to the bottom of the magnetic induction slot 31 is 1 mm, the distance from the permanent magnet 21 to the bottom of the magnet slot 32 is 0.2 mm, and the distance from the bottom of the magnetic induction slot 31 to the bottom of the magnet slot 32 is 1 mm.

[0034] In this embodiment, because the magnetic induction component 11 and the permanent magnet 21 are separated by the bottoms of the magnetic induction slot 31 and the magnet slot 32, the magnetic induction component 11 needs to sense the magnetic field changes of the permanent magnet 21 through the bottom of the slot. It is necessary to consider that the magnetic field range of the permanent magnet 21 can cover the magnetic induction component 11 so as to be sensed by the magnetic induction component 11. Therefore, in actual application, it is concluded that the distance from the magnetic induction component 11 to the bottom of the magnetic induction slot 31 is about 1 mm, the distance from the permanent magnet 21 to the bottom of the magnet slot 32 is about 0.2 mm, and the distance from the bottom of the magnetic induction slot 31 to the bottom of the magnet slot 32 is about 1 mm. At this time, the induction effect of the magnetic induction component 11 is the best.

[0035] Furthermore, the magnetic induction slot 31 and the magnet slot 32 are both made of aluminum.

[0036] In this embodiment, because the magnetic field generated by the permanent magnet 21 needs to pass through the bottom of the slot to be sensed by the magnetic induction component 11, and many materials currently have magnetic conductivity, thereby absorbing or reducing the magnetic field strength, and thus making the magnetic induction component 11 unable to sense the magnetic field changes, the magnetic induction slot 31 and the magnet slot 32 must both be made of aluminum material. Because aluminum material is not magnetically conductive, the magnetic field of the permanent magnet 21 can pass through the bottom of the slot and be sensed by the magnetic induction component 11.

[0037] Furthermore, a bearing groove 33 is provided in the center of the rear groove of the middle cover portion 3 , the magnet groove 32 is arranged in the bearing groove 33 , and the bearing 22 of the mechanical transmission portion 2 is accommodated in the bearing groove 33 .

[0038] In this embodiment, the rotor is a component that frequently rotates. A bearing groove 33 is provided in the center of the rear groove of the middle cover portion 3. The magnet groove 32 is provided in the bearing groove 33. The bearing 22 of the mechanical transmission part 2 is accommodated in the bearing groove 33. The magnet groove 32 and the bearing groove 33 are used to cooperate to position the rotor and the bearing 22, so that the positioning is more accurate, ensuring that the permanent magnet 21 corresponds to the magnetic induction component 11; more importantly, it can prevent the rotor and the bearing 22 from shifting when they are offset, causing greater shaking or offset, and putting the mechanical transmission part 2 at risk of disintegration, and can allow the magnetic induction component 11 to recognize the sudden change in the rotating magnetic field of the permanent magnet 21 when the rotor is offset, indicating that the mechanical transmission part 2 has a fault.

[0039] Furthermore, the bearing groove 33 is made of aluminum material.

[0040] In this embodiment, considering that the magnetic field range of the permanent magnet 21 may exceed the magnet slot 32 and the magnetic induction slot 31, the exceeding magnetic field will also be reduced by the magnetic conductive material, so the bearing slot 33 is also made of aluminum material, which can further ensure that the magnetic field of the permanent magnet 21 is not reduced.

[0041] Furthermore, the magnetic induction slot 31 , the magnet slot 32 and the bearing slot 33 are all circular slots.

[0042] In this embodiment, because the magnetic induction component 11 identifies the rotation speed, direction and other data of the rotor 23 by sensing the changes in the magnetic field of the permanent magnet 21, the rotating magnetic field formed by the permanent magnet 21 is usually circular. Therefore, in order to conform to the rotating magnetic field and facilitate the identification of the magnetic induction component 11, it is preferred to set the magnetic induction slot 31 and the magnet slot 32 as circular slots; and because the rotating surface formed by the bearing 22 when rotating with the rotor 23 is also circular, the bearing slot 33 is also set as a circular slot.

[0043] Other components and operations of the structure of a permanent magnet synchronous traction control device according to an embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0044] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A permanent magnet synchronous traction control device structure, comprising an electric control unit and a mechanical transmission unit; characterized in that: It also includes a middle cover; a magnetic induction slot is provided in the center of the front slot of the middle cover, and a magnet slot is provided in the center of the rear slot of the middle cover corresponding to the magnetic induction slot; The electric control part is fixed in the front groove of the middle cover part, and the magnetic induction component of the electric control part is accommodated in the magnetic induction groove; A permanent magnet is disposed at the rotor end of the mechanical transmission part, the front part of the mechanical transmission part is fixed in the rear slot of the middle cover part, and the permanent magnet is accommodated in the magnet slot.

2. A permanent magnet synchronous traction control device structure according to claim 1, characterized in that: The magnetic induction component is far away from the slot wall and the slot bottom of the magnetic induction slot, and the permanent magnet is far away from the slot wall and the slot bottom of the magnet slot.

3. A permanent magnet synchronous traction control device structure according to claim 1, characterized in that: The distance from the magnetic induction component to the bottom of the magnetic induction slot is 1 mm, the distance from the permanent magnet to the bottom of the magnet slot is 0.2 mm, and the distance from the bottom of the magnetic induction slot to the bottom of the magnet slot is 1 mm.

4. A permanent magnet synchronous traction control device structure according to claim 1, characterized in that: The magnetic induction slot and the magnet slot are both made of aluminum.

5. The permanent magnet synchronous traction control device structure according to claim 1 is characterized in that: A bearing groove is also provided in the center of the rear groove of the middle cover part, the magnet groove is arranged in the bearing groove, and the bearing of the mechanical transmission part is accommodated in the bearing groove.

6. A permanent magnet synchronous traction control device structure according to claim 5, characterized in that: The bearing groove is made of aluminum material.

7. A permanent magnet synchronous traction control device structure according to claim 5, characterized in that: The magnetic induction slot, the magnet slot and the bearing slot are all circular slots.

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