Axial elastic connecting device of motor

Abstract

An axial elastic connecting device for a motor relates to the technical field of couplings and comprises a motor seat, a motor shaft connecting sleeve and a power output connecting sleeve. The motor base is hollow, and the two ends of the motor base are correspondingly connected with the rack and the motor shell in a fastened mode respectively. One end of the motor shaft connecting sleeve is correspondingly fastened and connected with an output shaft of the motor, the other end of the motor shaft connecting sleeve is movably sleeved with a power output connecting sleeve, and a power transmission structure is arranged between the motor shaft connecting sleeve and the power output connecting sleeve; a limiting boss is arranged at the end, corresponding to the motor, of the motor shaft connecting sleeve, an annular boss is arranged on a sleeve body of the power output connecting sleeve, and a spring is arranged between the annular boss of the power output connecting sleeve and the limiting boss of the motor shaft connecting sleeve in a sleeving mode. Axial elastic connection between the motor and the gear is achieved under pushing of elastic force of the spring, the gear can be automatically combined with the power output connecting sleeve at any position in the circumferential direction after the power output connecting sleeve rotates, adjustment is not needed, and assembling is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coupling technical field, especially a motor axial elastic connecting device. BACKGROUND

[0002] Generally, the motor is connected with the driving device through the elastic coupling, no matter the elastic sleeve pin coupling, the elastic pin coupling, the elastic pin tooth type coupling, the plum blossom elastic coupling, the elastic ring coupling or other elastic couplings, only the circumferential elastic connection can be realized, and the axial elastic connection cannot be realized, some gears need to be axially moved during the maintenance on the paper machine equipment, therefore, the motor and the gear transmission connection cannot be realized by using the existing coupling.

[0003] Chinese patent (announcement number: CN210510003U) discloses a butt joint shaft structure with a butt joint sleeve that can be quickly replaced; the patent contains a shaft body, the shaft body is a hollow shaft body, a movable pin that can be displaced in the axial direction is arranged in the hollow cavity of the hollow shaft body, the movable pin or its connecting piece is in contact with the radial locking part, and at least one contact surface that extrudes the corresponding radial locking part outward in the radial direction is maintained in the stroke of the movable pin in the axial direction, and the movable pin has a containing space for locally or integrally containing or avoiding the radial locking part that is retracted in the radial direction; the patent structure can realize that the gear and the motor can be axially relatively moved and can realize power transmission; however, the patent structure is complex, the use cost is high, and the motor cannot be fixed. UTILITY MODEL CONTENT

[0004] In order to overcome the defects in the background art, the utility model discloses a motor axial elastic connecting device.

[0005] In order to realize the above-mentioned invention purposes, the utility model adopts the following technical scheme:

[0006] A motor axial elastic connecting device is used for tightly connecting the motor and the rack and connecting the motor and the gear, one end of the gear is provided with a character-shaped boss that passes the center of the end face, and the motor axial elastic connecting device comprises a motor base, a motor shaft connecting sleeve and a power output connecting sleeve, the motor base is hollow, and the two ends thereof are tightly connected with the rack and the motor shell correspondingly, one end of the motor shaft connecting sleeve is tightly connected with the output shaft of the motor, the other end of the motor shaft connecting sleeve movably sleeves the power output connecting sleeve, and a power transmission structure is arranged between the motor shaft connecting sleeve and the power output connecting sleeve, the end of the motor shaft connecting sleeve corresponding to the motor is provided with a limiting boss, the sleeve body of the power output connecting sleeve is provided with an annular boss, and the spring is sleeved between the annular boss of the power output connecting sleeve and the limiting boss of the motor shaft connecting sleeve.

[0007] Preferably, the power transmission structure is a spline connection structure; or the power transmission structure comprises a sliding groove arranged on the motor shaft connecting sleeve body, and the power output connecting sleeve is internally provided with a positioning pin in sliding fit with the sliding groove.

[0008] Preferably, the motor shaft connecting sleeve body is provided with two symmetrical sliding grooves.

[0009] Preferably, one side of the inner hole of the motor shaft connecting sleeve is provided with a milled flat structure, and the milled flat structure is provided with a step corresponding to one end of the motor.

[0010] Preferably, the motor shaft connecting sleeve is fastened and connected to the output shaft of the motor through a set screw, and the set screw is perpendicular to the axis of the motor shaft connecting sleeve.

[0011] Preferably, the motor seat is internally provided with an annular stop edge with an inner diameter smaller than the outer diameter of the annular protrusion of the power output connecting sleeve.

[0012] Preferably, one end of the motor seat is provided with a flange structure corresponding to the motor shell, the other end is provided with a flange structure corresponding to the rack, and the end of the motor seat corresponding to the rack is provided with a stop structure for positioning the motor seat; the flange structures at both ends of the motor seat are embedded with sealing rings.

[0013] Preferably, the power output connecting sleeve is provided with a flat hole vertically penetrating the one-shaped groove corresponding to one end of the one-shaped groove.

[0014] Due to the adoption of the technical scheme as described above, the utility model has the following beneficial effects:

[0015] The utility model discloses a motor axial elastic connecting device, simple structure, easy to assemble, and lower production cost, the motor shaft connecting sleeve is movably sleeved with the power output connecting sleeve at one end away from the motor, the motor shaft connecting sleeve is provided with a limiting protrusion at one end corresponding to the motor, the sleeve body of the power output connecting sleeve is provided with an annular protrusion, and the power output connecting sleeve is provided with a spring between the annular protrusion and the limiting protrusion of the motor shaft connecting sleeve, the spring is in contact with the power output connecting sleeve, so that the power output connecting sleeve and the gear are combined, when the gear is combined with the power output connecting sleeve in the axial direction, if the one-shaped protrusion of the gear does not correspond to the one-shaped groove of the power output connecting sleeve, the one-shaped protrusion of the gear will be in contact with the end of the power output connecting sleeve, and the spring is compressed in the axial direction, when the motor drives the power output connecting sleeve to rotate, under the elastic force of the spring, the one-shaped groove of the power output connecting sleeve enters the one-shaped protrusion of the gear, so that the gear and the power output connecting sleeve are combined correspondingly, and power is transmitted. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The utility model discloses a structural schematic view;

[0017] Fig. 2 Structure diagram of the motor shaft connecting sleeve and the motor output shaft connection;

[0018] Fig. 3 Structure diagram of the power output connecting sleeve.

[0019] In the figure: 1, motor; 2, sealing ring; 3, motor shaft connecting sleeve; 4, motor base; 5, positioning pin; 6, set screw; 7, spring; 8, power output connecting sleeve; 9, gear; 10, frame; 11, annular flange; 12, balancing hole. DETAILED DESCRIPTION

[0020] The utility model can be explained in detail through the following examples, the purpose of the utility model is disclosed in the utility model range, in the description of the utility model, it needs to be understood that if there are terms "upper", "lower", "front", "rear", "left", "right" and so on indicate the orientation or position relation, only with the drawing of the application, in order to facilitate the description of the utility model, and not indicate or imply the device or element must have a particular orientation.

[0021] Combined with the drawings Figs. 1-3 A motor axial elastic connecting device is used for fastening connection of a motor 1 and a frame 10 and transmission connection of the motor 1 and a gear 9, and one end of the gear 9 is provided with a one-word-shaped boss passing through the center of the end face;

[0022] The motor axial elastic connecting device comprises a motor base 4, a motor shaft connecting sleeve 3 and a power output connecting sleeve 8; as shown in the accompanying drawings Fig. 1 And 2 The motor base 4 is hollow inside and fastened to the frame 10 and the motor 1 shell at both ends correspondingly, that is, the motor base 4 is used for fastening connection of the motor 1 and the frame 10, the hollow cavity inside the motor base 4 is used for mounting the motor shaft connecting sleeve 3 and the power output connecting sleeve 8, the structure is compact, and the motor shaft connecting sleeve 3 and the power output connecting sleeve 8 can be protected at the same time, so that foreign matters are prevented from being accidentally wound on the motor shaft connecting sleeve 3 or the power output connecting sleeve 8;

[0023] According to needs, one end of the motor base 4 is provided with a flange structure corresponding to the motor 1 shell, the other end is provided with a flange structure corresponding to the frame 10, and the connection is accurate and reliable; one end of the motor base 4 corresponding to the frame 10 is provided with a stop opening structure for positioning the motor base 4, that is, the stop opening structure can be inserted into the corresponding mounting opening of the frame 10 when assembling, so as to accurately position the motor base 4, and the motor 1 and the gear 9 are conveniently coaxial; the flange structures at both ends of the motor base 4 are embedded with sealing rings 2, so that the sealing performance of the connection can be effectively improved.

[0024] One end of the motor shaft connecting sleeve 3 is fastened and connected with the output shaft of the motor 1, as a preferred fastening and connecting structure, as shown in the accompanying drawings Fig. 2 The inner hole of the motor shaft connecting sleeve 3 is provided with a milled flat structure, and the milled flat structure is provided with a step corresponding to one end of the motor 1. The motor shaft connecting sleeve 3 is fastened and connected with the output shaft of the motor 1 through a set screw 6, and the set screw 6 is perpendicular to the axis of the motor shaft connecting sleeve 3. The milled flat structure can achieve the purpose of circumferential limiting, avoiding relative rotation between the motor shaft connecting sleeve 3 and the output shaft of the motor 1. The step of the milled flat structure can achieve the purpose of axial limiting, so that there is a gap between the motor shaft connecting sleeve 3 and the shell of the motor 1, preventing frictional contact between the motor shaft connecting sleeve 3 and the shell of the motor 1. At the same time, the milled flat structure and the step of the milled flat structure can facilitate the alignment of the hole positions of the motor shaft connecting sleeve 3 and the output shaft of the motor 1 for installing the set screw 6, thereby facilitating the installation of the set screw 6 and improving the assembly efficiency.

[0025] The end of the motor shaft connecting sleeve 3 away from the motor 1 is movably sleeved with a power output connecting sleeve 8, and a power transmission structure is arranged between the motor shaft connecting sleeve 3 and the power output connecting sleeve 8, that is, the output shaft of the motor 1 transmits power to the motor shaft connecting sleeve 3, and the motor shaft connecting sleeve 3 transmits power to the power output connecting sleeve 8 through the power transmission structure.

[0026] The power transmission structure can be a spline connection structure, and the motor shaft connecting sleeve 3 and the power output connecting sleeve 8 can not only transmit power but also move axially relative to each other. However, when the diameter of the motor shaft connecting sleeve 3 is small, it is difficult to process the spline, which increases the use cost.

[0027] As another preferred structure, as shown in the accompanying drawings Fig. 1 The power transmission structure includes a sliding groove arranged on the sleeve body of the motor shaft connecting sleeve 3, and the power output connecting sleeve 8 is provided with a positioning pin 5 which is in sliding fit with the sliding groove, that is, the power transmission is realized by the engagement of the positioning pin 5 and the sliding groove, and the positioning pin 5 can slide along the sliding groove, so that the motor shaft connecting sleeve 3 and the power output connecting sleeve 8 can move axially relative to each other.

[0028] In order to improve the stability of the connection and operation of the motor shaft connecting sleeve 3 and the power output connecting sleeve 8, the sleeve body of the motor shaft connecting sleeve 3 is provided with two symmetrical sliding grooves, that is, the power output connecting sleeve 8 is provided with two positioning pins 5 which are respectively adapted to the two sliding grooves.

[0029] In order to prevent the power output connecting sleeve 8 from moving at will, the motor shaft connecting sleeve 3 is provided with a limiting boss corresponding to one end of the motor 1, the sleeve body of the power output connecting sleeve 8 is provided with an annular boss, and the power output connecting sleeve 8 is sleeved with a spring 7 between the annular boss and the limiting boss of the motor shaft connecting sleeve 3; the end of the power output connecting sleeve 8 away from the motor 1 is provided with a linear groove corresponding to a linear boss of the gear 9; the spring 7 is in contact with the power output connecting sleeve 8, so that the power output connecting sleeve 8 and the gear 9 are combined, thereby transmitting the power of the motor 1 to the gear 9 to start the rotation of the gear 9;

[0030] In order to prevent the power output connecting sleeve 8 from accidentally coming out of the motor base 4, the inner end of the motor base 4 away from the motor 1 is provided with an annular stop edge 11 with an inner diameter smaller than the outer diameter of the annular boss of the sleeve body of the power output connecting sleeve 8, that is, the annular stop edge 11 can play an axial limiting role on the power output connecting sleeve 8;

[0031] It should be noted that the linear boss of the gear 9 can also be a cross boss, if the linear boss of the gear 9 is modified to a cross boss, the end of the power output connecting sleeve 8 away from the motor 1 is correspondingly modified to a cross groove, so that the power output connecting sleeve 8 can transmit power to the gear 9, and at the same time does not hinder the axial movement of the gear 9; if the power output connecting sleeve 8 is provided with a linear groove, the end of the power output connecting sleeve 8 corresponding to the linear groove is provided with a balance hole 12 vertically penetrating the linear groove, as shown in the accompanying drawings, the dynamic balance performance of the power output connecting sleeve 8 is optimized through the balance hole 12 to avoid large vibration during operation. Fig. 3

[0032] In use, the motor shaft connecting sleeve 3 is first installed on the output shaft of the motor 1, and then the spring 7 and the power output connecting sleeve 8 are sequentially installed; then the motor base 4 is tightly connected with the motor 1, and the motor base 4 is installed together with the motor 1 at the corresponding position of the rack 10; when the gear 9 is combined with the power output connecting sleeve 8 in the axial direction, if the linear boss of the gear 9 does not correspond to the linear groove of the power output connecting sleeve 8, the linear boss of the gear 9 will be pressed against the end of the power output connecting sleeve 8, the spring 7 will be compressed in the axial direction, and the distance between the motor shaft connecting sleeve 3 and the power output connecting sleeve 8 will be shortened to provide space for the installation of the gear 9; when the motor 1 drives the power output connecting sleeve 8 to rotate, under the elastic pushing of the spring 7, the linear groove of the power output connecting sleeve 8 will enter the linear boss of the gear 9, so that the gear 9 and the power output connecting sleeve 8 are combined correspondingly without adjustment, which is convenient for assembly operation.

[0033] ​The utility model discloses the part of not detailed is prior art, for the person skilled in the art, apparently the utility model is not limited to the details of the above exemplary embodiments, and can realize the utility model with other specific forms without departing from the spirit or basic characteristics of the utility model, therefore, no matter from which point, should be regarded as exemplary, and is non - limitative, aims at including all changes in the meaning and range of equivalent elements in the utility model.

Claims

1. An axial elastic connection device for a motor, used to fasten a motor (1) to a frame (10) and to drive a motor (1) and a gear (9), wherein one end of the gear (9) is provided with a straight boss passing through the center of the end face of the gear (9); characterized in that: It includes a motor base (4), a motor shaft connecting sleeve (3), and a power output connecting sleeve (8); the motor base (4) is hollow inside, and its two ends are respectively fastened to the frame (10) and the motor (1) housing; one end of the motor shaft connecting sleeve (3) is fastened to the output shaft of the motor (1), and the other end is movably sleeved with the power output connecting sleeve (8), and a power transmission structure is provided between the motor shaft connecting sleeve (3) and the power output connecting sleeve (8); the motor shaft connecting sleeve (3) is provided with a limiting boss at the end corresponding to the motor (1), and the sleeve body of the power output connecting sleeve (8) is provided with an annular boss, and a spring (7) is sleeved between the annular boss and the limiting boss of the motor shaft connecting sleeve (3) corresponding to the power output connecting sleeve (8); the end of the power output connecting sleeve (8) away from the motor (1) is provided with a straight groove that matches the straight boss of the gear (9).

2. The motor axial elastic connection device as described in claim 1, characterized in that: The power transmission structure is a spline connection structure; or the power transmission structure includes a groove provided on the body of the motor shaft connecting sleeve (3), and the power output connecting sleeve (8) is provided with a positioning pin (5) that slides and engages with the groove.

3. The motor axial elastic connection device as described in claim 1, characterized in that: The motor shaft connecting sleeve (3) has two sliding grooves, and the two sliding grooves are symmetrically arranged.

4. The motor axial elastic connection device as described in claim 1, characterized in that: The inner hole of the motor shaft connecting sleeve (3) is provided with a milled flat structure, and the milled flat structure is provided with a step at one end of the motor (1).

5. The motor axial elastic connection device as described in claim 1 or 4, characterized in that: The motor shaft connecting sleeve (3) is fastened to the output shaft of the motor (1) by the set screw (6), and the set screw (6) is perpendicular to the axis of the motor shaft connecting sleeve (3).

6. The axial elastic connection device for a motor as described in claim 1, characterized in that: The motor base (4) has an annular flange (11) with an inner diameter smaller than the outer diameter of the annular boss of the power output connecting sleeve (8) at one end away from the motor (1).

7. The motor axial elastic connection device as described in claim 1, characterized in that: The motor base (4) has a flange structure at one end that corresponds to and is adapted to the housing of the motor (1), and a flange structure at the other end that corresponds to and is adapted to the frame (10). The motor base (4) has a stop structure at one end corresponding to the frame (10) for positioning the motor base (4). Both flange structures at both ends of the motor base (4) are fitted with sealing rings (2).

8. The motor axial elastic connection device as described in claim 1, characterized in that: The power output connecting sleeve (8) has a leveling hole (12) that vertically penetrates the straight groove at one end.

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