Split type motor mounting device

Abstract

The utility model discloses a split type motor mounting device, which belongs to the technical field of motor mounting auxiliary tools and comprises a rotating disc, a screw and a mounting seat. The rotating disc is sleeved outside the screw rod and is in threaded fit with the screw rod; the upper end of the mounting seat is supported on the rotating disc through a bearing; and the end part of the screw rod penetrates through the rotating disc, the mounting seat and the motor rotor and is sleeved in an inner hole of the motor rotating shaft. According to the utility model, the motor rotor does not rotate relative to the motor stator in the installation process, the rotor slowly moves and descends to the rotor installation surface along the screw rod, and the problem that the outer circumferential surface of the motor rotor and the inner circumferential surface of the motor stator are scratched and damaged due to the relative rotation between the motor stator and the motor rotor is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor installation auxiliary frock technical field, concretely relates to a split type motor installation device. BACKGROUND

[0002] Split type motor is widely used, and the existing auxiliary frock structure is simple when installing the split type motor, the installation precision is not high, and there are disadvantages, which greatly influence the motor installation quality and safety.

[0003] The existing split type motor installation mode includes the following two kinds:

[0004] Method one, using the guide rod positioning, the motor rotor installation mode of sliding along the guide rod, this mode installs first motor stator, then the end of the cylindrical guide rod is inserted into the shaft hole of the motor rotor to be installed in the center position, the inner hole of the motor rotor is inserted into the guide rod, and the motor rotor is slid to the installation surface along the guide rod.

[0005] Method two, using screw rod and connecting disc screw movement mode, this mode installs first motor stator, the motor rotor is fixed to the connecting disc, the inner thread of the connecting disc center is screwed to the outer thread of the screw rod, the cylindrical end of the screw rod end is inserted into the shaft hole of the motor rotor to be installed in the center position, and the motor rotor and connecting disc assembly are moved along the screw rod in the axial direction, so that the motor rotor gradually reaches the motor rotor installation surface.

[0006] The above two installation modes have disadvantages: in method one, when the motor rotor approaches the motor stator end face, the magnetic force between the motor stator and the motor rotor makes the motor rotor accelerate into the stator cavity, and stops after hitting the motor rotor installation surface, so that the motor rotor is easily damaged; at the same time, when the guide rod is not guided accurately, the motor stator and the motor rotor are easily collided, causing the motor stator and the motor rotor to be damaged at the same time. In method two, although the motor rotor can slowly reach the installation surface, there is relative rotation between the motor stator and the motor rotor during installation, and when the motor rotor rotates into the motor stator cavity, the motor rotor outer wall circumference surface and the motor stator inner cavity inner wall circumference surface are damaged due to the combined influence of the screw rod positioning precision, the motor rotor outer circle roundness and the motor stator inner cavity roundness, causing the motor stator and the motor rotor to be damaged at the same time.

[0007] Therefore, a split type motor installation device is needed, which can avoid damage during the installation of the stator and the motor rotor of the split type motor. UTILITY MODEL CONTENTS

[0008] Therefore, the split type motor mounting device can realize relative rotation of a motor rotor during a motor rotor mounting process, and the rotor slowly moves down to a rotor mounting surface along a screw rod, thereby solving the problem of scratch damage between an outer circumferential surface of the motor rotor and an inner circumferential surface of the motor stator caused by relative rotation between the motor stator and the motor rotor.

[0009] The utility model is realized through the following technical schemes:

[0010] A split type motor mounting device, comprising: a rotating disc, a screw rod and a mounting seat.

[0011] The rotating disc is sleeved on the screw rod and threadedly cooperates with the screw rod.

[0012] The upper end of the mounting seat is supported on the rotating disc through a bearing, and the lower end is provided with a motor rotor.

[0013] The end of the screw rod is sleeved in the inner hole of the motor rotating shaft through the rotating disc, the mounting seat and the motor rotor.

[0014] Further, the split type motor mounting device further comprises a positioning head.

[0015] The positioning head is coaxially sleeved in the inner hole of the motor rotating shaft, and the positioning head is in a cylindrical structure and is internally provided with a tapered hole.

[0016] The screw rod comprises a cylindrical threaded segment and a tapered segment, the small-diameter end of the tapered segment faces downward, and the large-diameter end of the tapered segment is fixedly connected with the lower end of the threaded segment or is an integral structure.

[0017] The cylindrical threaded segment of the screw rod threadedly cooperates with the rotating disc, and the tapered segment of the screw rod conically cooperates with the tapered hole of the positioning head.

[0018] Further, an annular boss is formed on the outer surface of the upper end of the positioning head along the circumference thereof.

[0019] The annular boss on the positioning head abuts against the upper end face of the motor rotating shaft.

[0020] Further, the bottom of the tapered hole of the positioning head is a threaded hole.

[0021] Further, the lower end face of the rotating disc is provided with a cylindrical boss coaxial therewith.

[0022] The mounting seat comprises an upper bearing seat and a lower bearing seat, the upper bearing seat is in an annular structure, the lower end face of the upper bearing seat is provided with a mounting groove a, the lower bearing seat is in a cylindrical structure, and the upper end face of the lower bearing seat is provided with a mounting groove b; the mounting groove a of the upper bearing seat and the mounting groove b of the lower bearing seat are mutually butted to form a mounting groove.

[0023] The inner ring of the bearing is sleeved outside the cylindrical boss, and the outer ring is clamped in the mounting groove a and the mounting groove b;

[0024] The motor rotor is installed on the lower bearing seat.

[0025] Further, the split motor mounting device further comprises a pressing ring.

[0026] The outer circumferential surface of the cylindrical boss has an axial shoulder; the upper end surface of the bearing is axially limited by the axial shoulder, and the lower end surface is pressed by the pressing ring.

[0027] Further, the split motor mounting device further comprises a transition disc.

[0028] The motor rotor is installed on the lower bearing seat through the transition disc.

[0029] Further, the upper bearing seat and the lower bearing seat, the lower bearing seat and the transition disc, and the transition disc and the motor rotor are detachably connected.

[0030] Further, the rotating disc, the screw rod, the bearing, the upper bearing seat, the lower bearing seat, the transition disc, and the mounting seat are made of non-magnetic metal materials.

[0031] Beneficial effects:

[0032] (1) The split motor mounting device can slowly move the motor rotor along the axial direction of the motor rotating shaft to the mounting surface inside the motor stator, thereby solving the problem of scraping and damage between the outer circumferential surface of the motor rotor and the inner circumferential surface of the motor stator caused by relative rotation.

[0033] (2) The split motor mounting device can ensure the coaxiality between the screw rod and the positioning head, and the coaxiality between the screw rod and the motor rotating shaft, thereby ensuring the coaxiality between the motor rotor and the motor stator, avoiding scraping and damage between the motor rotor and the motor stator caused by misalignment; at the same time, by using positioning heads of different sizes, the mounting device is suitable for motor rotating shafts of different sizes, and the device can be used for the installation of split motors of different sizes.

[0034] (3) The split motor mounting device can limit the annular boss on the positioning head by the upper end surface of the motor rotating shaft, and can provide stable support for the screw rod.

[0035] (4) The utility model discloses a split type motor mounting device, the bottom of the taper hole of the positioning head is the threaded hole, when the taper section of the screw rod and the positioning head are pressed tightly and are not easy to separate, the screw rod can be pushed out upwards by the mode of screwing the screw into the threaded hole of the positioning head, thereby realizing the disassembly between the screw rod and the positioning head.

[0036] (5) The utility model discloses a split type motor mounting device, the upper end surface of the bearing is axially limited through the shaft shoulder, and the lower end surface is pressed tightly through the pressing ring, which can effectively fix the inner ring of the bearing, thereby guaranteeing the use stability of the whole device.

[0037] (6) The utility model discloses a split type motor mounting device, the motor rotor is installed on the lower bearing seat through the transition disc, and only the transition disc needs to be replaced to make the mounting device applicable to the installation between the motor rotor and the motor stator of different sizes and different models of split type motors.

[0038] (7) The utility model discloses a split type motor mounting device, the rotating disc, the screw rod, the bearing, the upper bearing seat, the lower bearing seat, the transition disc and the mounting seat all adopt non-magnetic metal materials, which can avoid the collision and damage of the device caused by the adsorption of the permanent magnet of the split type motor. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is the appearance drawing of the utility model;

[0040] Figure 2 It is the section view of the utility model;

[0041] Figure 3 It is the motor rotor installation before state diagram of the utility model;

[0042] Figure 4 It is the motor rotor installation after state diagram of the utility model;

[0043] Among them, 1-rotating disc, 2-upper bearing seat, 3-screw a, 4-lower bearing seat, 5-screw b, 6-transition disc, 7-screw c, 8-positioning head, 9-screw rod, 10-pressing ring, 11-bearing, 12-motor rotor, 13-motor rotating shaft, 14-motor stator. DETAILED DESCRIPTION

[0044] The utility model is described in detail below in combination with the drawings and examples.

[0045] The embodiment provides a split type motor mounting device, as shown in Figure 1 And Figure 2 It is shown that it comprises rotating disc 1, screw rod 9, bearing 11, pressing ring 10, mounting seat, transition disc 6, positioning head 8, a plurality of screws and the gasket corresponding to the screw.

[0046] The screw rod 9 comprises a cylindrical threaded segment and a tapered segment (i.e. a conical structure), the small-diameter end of the tapered segment faces downward, and the large-diameter end of the tapered segment is fixedly connected (or integrated) with the lower end of the cylindrical threaded segment.

[0047] The lower end surface of the rotating disc 1 has a cylindrical boss coaxial therewith; a coaxial threaded hole is formed in the rotating disc 1, the threaded hole penetrates the rotating disc 1 and the cylindrical boss, the rotating disc 1 is threadedly connected with the cylindrical threaded segment of the screw rod 9 through the threaded hole, so that the rotating disc 1 is coaxially sleeved on the cylindrical threaded segment of the screw rod 9. The outer circumference of the cylindrical boss has a shoulder (i.e. the cylindrical boss is a stepped shaft), and the end of the cylindrical boss is provided with external threads.

[0048] The inner ring of the bearing 11 is sleeved outside the cylindrical boss. The upper end surface of the bearing 11 is axially limited by the shoulder of the outer circumference of the cylindrical boss, and the lower end surface is pressed by the pressure ring 10. The pressure ring 10 is provided with internal threads, which are threadedly connected with the external threads of the end of the cylindrical boss. The lower end surface of the pressure ring 10 is provided with a T-shaped slot for tightening the pressure ring 10.

[0049] The outer ring of the bearing 11 is sleeved in the mounting seat; the mounting seat comprises an upper bearing seat 2 and a lower bearing seat 4.

[0050] The upper bearing seat 2 has a ring structure, and the lower end surface thereof is provided with a mounting groove a. The lower bearing seat 4 has a cylindrical structure, and the upper end surface thereof is provided with a mounting groove b. The mounting groove a of the upper bearing seat 2 and the mounting groove b of the lower bearing seat 4 are butted to form a mounting groove of the bearing 11, the outer ring of the bearing 11 is clamped in the mounting groove a and the mounting groove b, and the upper bearing seat 2 and the lower bearing seat 4 are fixedly connected by a screw a3. The inner circumferential surface of the mounting groove b of the lower bearing seat 4 is provided with a relief groove, so as to avoid the bottom surface of the mounting groove b of the lower bearing seat 4 from contacting the inner ring of the bearing 11 and affecting the normal operation of the bearing 11.

[0051] The lower end of the lower bearing seat 4 is provided with an annular mounting boss for mounting the motor rotor 12.

[0052] The motor rotor 12 is mounted on the mounting boss of the lower end surface of the lower bearing seat 4 through the transition disc 6. In this embodiment, the transition disc 6 comprises a large-diameter segment and a small-diameter segment; the large-diameter segment of the transition disc 6 is connected with the lower bearing seat 4 through a screw b5, and the motor rotor 12 is mounted on the small-diameter segment of the transition disc 6 through a screw c7 (the screw c7 is screwed into the threaded hole carried by the motor rotor 12 itself, and it is not necessary to additionally form a threaded hole on the motor rotor 12). The transition disc 6 can be independently replaced, so that the device can be applied to the mounting surfaces of different motor rotors 12.

[0053] The positioning head 8 is coaxially sleeved in the inner hole of the motor rotating shaft 13. The positioning head 8 is in a cylindrical structure, and a tapered hole is arranged in the inside of the positioning head 8. The tapered section of the screw rod 9 is in conical cooperation with the tapered hole of the positioning head 8 through the rotating disc 1, the mounting seat and the motor rotor 12, which can ensure the coaxiality between the screw rod 9 and the positioning head 8, and the coaxiality between the screw rod 9 and the motor rotating shaft 13, and further ensure the coaxiality between the motor rotor 12 and the motor stator 14, thereby avoiding the scraping and damage between the motor rotor 12 and the motor stator 14 caused by the misalignment.

[0054] An annular boss is machined on the outer surface of the upper end of the positioning head 8 along the circumference thereof. Figure 3 When the positioning head 8 is inserted into the inner hole of the motor rotating shaft 13, the upper end surface of the motor rotating shaft 13 abuts against the annular boss of the positioning head 8 to form a limit. The positioning head 8 can provide stable support for the screw rod 9. The bottom of the tapered hole of the positioning head 8 is a threaded hole. When the motor stator 14 and the motor rotor 12 are large in size, the magnetic attraction between the motor stator 14 and the motor rotor 12 is large, which can easily cause the compression between the tapered section of the screw rod 9 and the positioning head 8 and is not easy to separate. At this time, the screw rod 9 can be pushed out upward by screwing a screw into the threaded hole of the positioning head 8, so as to realize the disassembly between the screw rod 9 and the positioning head 8. The positioning head 8 can be independently replaced, so that the device can be applied to different hole diameters of the motor rotating shaft 13.

[0055] In the embodiment, the rotating disc 1, the screw rod 9, the bearing, the threaded compression ring 10, the mounting seat, the transition disc 6, the positioning head 8, the plurality of screws (including the screw a3, the screw b5 and the screw c7) and the gaskets corresponding to the screws are all made of a metal material without magnetism or easy magnetism. The metal material can be preferably stainless steel.

[0056] A gasket is sleeved on each screw (including the screw a3, the screw b5 and the screw c7) in the device, which can increase the contact area, disperse the stress and prevent the screw from loosening.

[0057] The state of the motor rotor 12 after being installed is shown in Figure 4

[0058] Usage method:

[0059] The split type motor installation device in the embodiment is used through the following steps:

[0060] S01, the rotating disc 1, the screw rod 9, the bearing 11 and the mounting seat are assembled; the transition disc 6 is fixed on the motor rotor 12; and the positioning head 8 is loaded into the inner hole of the motor rotating shaft 13;

[0061] S02, the transition disc 6 with the motor rotor 12 is fixed on the lower end of the mounting seat; ​

[0062] S03, the screw 9 of the positioning head 8 is placed in the tapered hole of the positioning head 8, the installation device is stably vertically downward, the rotating disc 1 is rotated, so that the mounting seat and the motor rotor 12 are stably and slowly lowered along the screw 9; the motor rotor 12 is gradually entered into the inner cavity of the motor stator 14, until the motor rotor 12 reaches the installation surface (i.e. the shaft shoulder of the motor rotating shaft 13);

[0063] S04, when the motor rotor 12 is installed in place, the screw b5 is removed, the device is vertically lifted as a whole, and the installation device is removed; then the screw c7 is removed, the transition disc 6 and the positioning head 8 are removed, and the installation of the split motor is completed.

[0064] Working principle:

[0065] In the embodiment, the rotating disc 1 of the split motor installation device is threadedly connected with the screw 9, and with the rotation of the rotating disc 1 (clockwise rotation in the embodiment), the mounting seat with the motor rotor 12 is driven to move downward, so that the slow lowering of the motor rotor 12 is realized, and the motor rotor 12 reaches the installation surface without damage. Since the mounting seat and the rotating disc 1 are connected through the bearing 11, the rotating disc 1 and the mounting seat with the motor rotor 12 are separated from each other, so that the relative rotation between the motor rotor 12 and the motor stator 14 is avoided, and the scraping damage between the outer wall circumferential surface of the motor rotor 12 and the inner wall circumferential surface of the inner cavity of the motor stator 14 is avoided.

[0066] In conclusion, the above is only a preferred embodiment of the utility model, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A split motor mounting device, characterized in that: include: Rotating disc (1), screw (9) and mounting base; The rotating disk (1) is sleeved outside the screw rod (9) and is threadably matched with the screw rod (9); The upper end of the mounting seat is supported on the rotating disk (1) via a bearing (11), and the motor rotor (12) is mounted on the lower end; The end of the screw (9) passes through the rotating disk (1), the mounting seat and the motor rotor (12) and is sleeved into the inner hole of the motor rotating shaft (13).

2. A split motor mounting device as claimed in claim 1, characterized in that: Also includes: Positioning head (8); The positioning head (8) is coaxially sleeved in the inner hole of the motor rotating shaft (13); The positioning head (8) is a cylindrical structure with a tapered hole provided inside. The screw (9) comprises: a cylindrical threaded section and a tapered section, wherein the small diameter end of the tapered section faces downward, and the large diameter end of the tapered section is fixedly connected to the lower end of the threaded section or forms an integral structure; The cylindrical thread section of the screw rod (9) is threadedly matched with the rotating disk (1); the conical section of the screw rod (9) is conically matched with the conical hole of the positioning head (8).

3. A split motor mounting device as claimed in claim 2, characterized in that: The outer surface of the upper end of the positioning head (8) is processed with an annular boss along its circumference; The annular boss on the positioning head (8) contacts the upper end surface of the motor rotating shaft (13).

4. A split motor mounting device as claimed in claim 2 or 3, characterized in that: The bottom of the tapered hole of the positioning head (8) is a threaded hole.

5. A split motor mounting device as claimed in claim 1, characterized in that: The lower end surface of the rotating disk (1) has a cylindrical boss coaxial with the rotating disk; The mounting seat comprises: an upper bearing seat (2) and a lower bearing seat (4); the upper bearing seat (2) is an annular structure, and a mounting groove a is processed on its lower end surface; the lower bearing seat (4) is a cylindrical structure, and a mounting groove b is processed on its upper end surface; the mounting groove a of the upper bearing seat (2) and the mounting groove b of the lower bearing seat (4) are connected to each other to form a mounting groove; The inner ring of the bearing (11) is sleeved on the outside of the cylindrical boss, and the outer ring is clamped in the mounting groove a and the mounting groove b; The motor rotor (12) is mounted on the lower bearing seat (4).

6. A split motor mounting device as claimed in claim 5, characterized in that: Also includes: Pressing ring (10); The outer circumferential surface of the cylindrical boss has a shaft shoulder; the upper end surface of the bearing (11) is axially limited by the shaft shoulder, and the lower end surface is pressed by the pressing ring (10).

7. A split motor mounting device as claimed in claim 5, characterized in that: Also includes: transition plate (6); The motor rotor (12) is mounted on the lower bearing seat (4) via a transition plate (6).

8. A split motor mounting device as claimed in claim 7, characterized in that: The upper bearing seat (2) and the lower bearing seat (4), the lower bearing seat (4) and the transition plate (6), and the transition plate (6) and the motor rotor (12) are all detachably connected.

9. A split motor mounting device according to any one of claims 7-8, characterized in that: The rotating disk (1), screw (9), bearing (11), upper bearing seat (2), lower bearing seat (4), transition plate (6), and mounting seat are all made of non-magnetic metal materials.

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