阅读说明：本技术 一种基于电磁离合器的输入通道切换机构 (Input channel switching mechanism based on electromagnetic clutch ) 是由 徐祥礼 刘向 屈海龙 刘渊博 刘赛恒 于 2020-11-10 设计创作，主要内容包括：本发明一种基于电磁离合器的输入通道切换机构,输入轴A(1)与啮合面A(2)固连,并通过轴承A(4)与紧固螺母(5)固定在支座上；啮合面B(6)上设有轴,轴与啮合面C(7)固连,并可沿输入齿轮(8)孔轴向滑动；输入齿轮(8)通过轴承B(10)固定在支座(9)上,以保证输入齿轮(8)不能轴向蹿动且能承受一定轴向载荷；啮合面D(12)与输入轴B(13)固连；电磁离合器固定在支座上。本发明基于电磁离合器的输入通道切换机构,通过单一电磁离合器实现了不同输入通道之间的切换,避免了常用速度综合机构中需要在增加多组自锁机构的问题,有效减轻了结构重量,提高了电动机构的可靠性。(The invention relates to an input channel switching mechanism based on an electromagnetic clutch, wherein an input shaft A (1) is fixedly connected with a meshing surface A (2) and is fixed on a support through a bearing A (4) and a fastening nut (5); a shaft is arranged on the meshing surface B (6), fixedly connected with the meshing surface C (7) and capable of axially sliding along a hole of the input gear (8); the input gear (8) is fixed on the support (9) through a bearing B (10) to ensure that the input gear (8) cannot axially shift and can bear certain axial load; the meshing surface D (12) is fixedly connected with the input shaft B (13); the electromagnetic clutch is fixed on the support. The input channel switching mechanism based on the electromagnetic clutch realizes the switching among different input channels through the single electromagnetic clutch, avoids the problem that a plurality of groups of self-locking mechanisms need to be added in a common speed comprehensive mechanism, effectively reduces the structural weight and improves the reliability of an electric mechanism.)

1. An input channel switching mechanism based on an electromagnetic clutch is characterized in that an input shaft A (1) is fixedly connected with a meshing surface A (2) and fixed on a support through a bearing A (4) and a fastening nut (5) to ensure that the meshing surface A (2) cannot axially shift and bear a certain axial load; a shaft is arranged on the meshing surface B (6), fixedly connected with the meshing surface C (7) and capable of axially sliding along a hole of the input gear (8); the input gear (8) is fixed on the support (9) through a bearing B (10) to ensure that the input gear (8) cannot axially shift and can bear certain axial load; the meshing surface D (12) is fixedly connected with the input shaft B (13); the electromagnetic clutch is fixed on the support; the meshing surface D (12) is fixedly connected with the input shaft B (13) and is fixed on the support through a bearing C (17).

2. The input-passage switching mechanism according to claim 1, wherein the engaging surface a (2) and the engaging surface B (6) are a pair of engaging surfaces, and the engaging surface C (7) and the engaging surface D (12) are a pair of engaging surfaces.

3. The input passage switching mechanism of claim 2, wherein the means of engagement between the engaging surfaces comprises a friction or dog plate that acts to transmit the input torque.

4. The input-passage switching mechanism according to claim 2 or 3, wherein the shaft on the meshing surface B (6) is fitted with a transmission structure axially slidable along the hole of the input gear (8) while transmitting the torque to the input gear (8).

5. The input-path switching mechanism of claim 4, wherein the drive structure is in the form of either a sliding key or a spline or a ball spline.

6. The input channel switching mechanism according to claim 1, wherein a preload spring (11) is installed between the input gear (8) and the meshing surface B (6), and when the electromagnetic clutch is not operated, the preload of the spring causes the meshing surface a (2) to mesh with the meshing surface B (6), and the mechanism is input from the input shaft a (1).

7. The input channel switching mechanism according to claim 1, wherein the armature (16) is mounted on the engaging surface C (7), and when the electromagnetic clutch is operated, the engaging surface C (7) slides axially and engages with the engaging surface D (12), and at this time, since the engaging surface B (6) and the engaging surface C (7) are fixedly connected, the input shaft a (1) is disconnected, and the mechanism is input from the input shaft B (13).

8. The input passage switching mechanism of claim 1, wherein the electromagnetic clutch includes an electromagnetic clutch housing (14), an electromagnetic clutch coil (15), and an armature (16).

9. The input-channel switching mechanism according to claim 1, wherein the output gear (18) is fixedly connected to the output shaft (19).

10. The input-channel switching mechanism of claim 1, wherein the input shaft and the output shaft of the input-channel switching mechanism are not fixed, the input direction can be switched, the input can be made from a single channel, and the output of different channels can be realized through the switching mechanism.

Technical Field

The invention relates to an input channel switching mechanism, in particular to an input channel switching mechanism based on an electromagnetic clutch.

Background

In an electric mechanism, a motor is generally called an electric input channel of the electric mechanism when the motor drives an output mechanism to realize linear or rotary output by driving a speed reducer. In some electric mechanisms, in order to ensure the reliability of output, it is common to increase the reliability of operation of the electric mechanism by adding another motor or adding a mechanical input channel. The mechanical input channel is typically an input shaft with a specific interface left, which can be driven by a specific tool. The output mechanism may be driven through a backup electrical channel or a mechanical channel when the primary electrical channel fails. Therefore, it is necessary to synthesize and switch the input channels. In the conventional working method, different input channels are generally integrated and switched by a speed integration mechanism, and a commonly used speed integration mechanism is a planetary gear train. When the input is carried out through a certain input channel, the other channel must be ensured to be self-locked, so that each channel must have self-locking capability, and common self-locking methods comprise electromagnetic clutch self-locking, turbine worm self-locking and overrunning clutch self-locking. For example, a dual input channel electric mechanism typically requires two sets of self-locking mechanisms, which results in additional weight and reliability costs.

Disclosure of Invention

The purpose of the invention is:

in order to solve the problems that a plurality of sets of self-locking mechanisms are needed in the existing input channel switching method, so that extra weight and reliability cost are brought, the invention provides an input channel switching mechanism based on an electromagnetic clutch.

The technical scheme of the invention is as follows:

an input channel switching mechanism based on an electromagnetic clutch is characterized in that an input shaft A1 is fixedly connected with a meshing surface A2 and fixed on a support through a bearing A4 and a fastening nut 5, so that the meshing surface A2 cannot axially shift and can bear a certain axial load; a shaft is arranged on the meshing surface B6, is fixedly connected with the meshing surface C7 and can axially slide along the hole 8 of the input gear; the input gear 8 is fixed on the support 9 by a bearing B10 to ensure that the input gear 8 cannot axially shift and can bear a certain axial load; the engagement surface D12 is fixedly connected with the input shaft B13; the electromagnetic clutch is fixed on the support; the engaging surface D12 is fixedly connected with the input shaft B13 and fixed on the support through a bearing C17.

Preferably, the engaging surface a2 and the engaging surface B6 are a pair of engaging surfaces, and the engaging surface C7 and the engaging surface D12 are a pair of engaging surfaces.

Preferably, the engagement between the engagement surfaces comprises friction or dog plates which act to transmit the input torque.

Preferably, the shaft on the mating surface B6 carries a transmission structure that slides axially along the bore of the input gear 8 while transmitting torque to the input gear 8.

Preferably, the transmission structure takes the form of either a sliding key or a spline or a ball spline.

Preferably, the pre-tightening spring 11 is installed between the input gear 8 and the meshing surface B6, when the electromagnetic clutch is not in operation, the pre-tightening force of the spring makes the meshing surface a2 and the meshing surface B6 meshed, and the mechanism is input from the input shaft a 1.

Preferably, the armature 16 is mounted on the engaging surface C7, and when the electromagnetic clutch is operated, the engaging surface C7 slides axially and is engaged with the engaging surface D12, and at this time, since the engaging surface B6 and the engaging surface C7 are fixedly connected, the input shaft a1 is disconnected, and the mechanism is input from the input shaft B13.

Preferably, the electromagnetic clutch includes an electromagnetic clutch housing 14, an electromagnetic clutch coil 15, and an armature 16.

Preferably, the output gear 18 is fixedly connected with the output shaft 19.

Preferably, the input shaft and the output shaft of the input channel switching mechanism are not fixed, the input direction can be switched, the input can be carried out by a single channel, and the output of different channels can be realized through the switching mechanism.

The invention has the beneficial effects that:

the input channel switching mechanism based on the electromagnetic clutch realizes the switching among different input channels through the single electromagnetic clutch, avoids the problem that a plurality of groups of self-locking mechanisms need to be added in a common speed comprehensive mechanism, effectively reduces the structural weight and improves the reliability of an electric mechanism.

Drawings

Fig. 1 is a schematic structural diagram of an input passage switching mechanism based on an electromagnetic clutch according to a preferred embodiment of the present invention.

The device comprises an input shaft A, a 2-meshing surface A, a 3-support A, a 4-bearing A, a 5-fastening nut, a 6-meshing surface B, a 7-meshing surface C, an 8-input gear, a 9-support B, a 10-bearing B, an 11-pre-tightening spring, a 12-meshing surface D, a 13-input shaft B, a 14-electromagnetic clutch shell, a 15-electromagnetic clutch coil, a 16-armature, a 17-bearing C, an 18-output gear and a 19-output shaft.

Detailed Description

The present invention will be described in further detail below by way of specific embodiments:

please refer to fig. 1, which is a schematic structural diagram of a preferred embodiment of an input channel switching mechanism based on an electromagnetic clutch according to the present invention. In the present embodiment, the present invention is based on an input channel switching mechanism of an electromagnetic clutch, and realizes switching between different input channels by the electromagnetic clutch and a sliding mechanism, and the input channel switching mechanism is composed of an input shaft a1, a meshing surface a2, a support A3, a bearing a4, a fastening nut 5, a meshing surface B6, a meshing surface C7, an input gear 8, a support B9, a bearing B10, a pre-tightening spring 11, a meshing surface D12, an input shaft B13, an electromagnetic clutch housing 14, an electromagnetic clutch coil 15, an armature 16, a bearing C17, an output gear 18, and an output shaft 19.

The input shaft 1 is fixedly connected with the meshing surface A2 and is fixed on the support through the bearing 4 and the fastening nut 1, so that the meshing surface A1 cannot axially move and can bear certain axial load. The meshing surface B6 is fixedly connected with the meshing surface C7 and can axially slide along the hole of the input gear 8. The input gear 8 is fixed to the carrier by means of bearings 10 to ensure that the input gear 8 cannot axially shift and can bear a certain axial load. The engagement surface D12 is fixedly connected with the input shaft B13. The electromagnetic clutch comprises an electromagnetic clutch shell 14, an electromagnetic clutch coil 15, an armature 16 and the like and is fixed on a support. The engaging surface D12 is fixedly connected with the input shaft B13 and fixed by a bearing 17. The pretension spring 11 is mounted between the input gear 8 and the engagement surface B6. When the electromagnetic clutch is not operated, the meshing surface A2 is meshed with the meshing surface B6 under the pretightening force of the spring, and the mechanism is input from the input shaft A1 and output through the output gear 18. The armature 16 is mounted on the meshing surface C7, when the electromagnetic clutch works, the meshing surface C7 slides axially and is meshed with the meshing surface D12, at the moment, because the meshing surface B6 and the meshing surface C7 are fixedly connected, the input shaft 1 is disconnected, and the mechanism is input from the input shaft B13.

When the output shaft 19 is an input channel, the input channel switching mechanism based on the electromagnetic clutch of the present invention can be changed into an output channel switching mechanism, and at this time, the input shaft 1 and the input shaft 13 are two switchable output channels.