Rotor press fitting tool

Abstract

The utility model belongs to the technical field of rotor assembly, and discloses a rotor press fitting tool which comprises a pressing rod, a pressing claw is arranged at the lower end of the pressing rod, and the pressing claw is used for extruding an outer ring of a rotor bearing; the support is used for supporting the pressing rod and transmitting pressure to the pressing rod; the upper end of the pressing rod is movably connected with the support, and the pressing rod can drive the pressing claw to rotate in the horizontal direction. The rotor press fitting tool can reduce the assembling difficulty of the rotor and the reduction gearbox and improve the assembling quality.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotor assembly technical field. BACKGROUND

[0002] The rotating speed of the motor is output by the rotor, and the rotating speed of the rotor output is high, and needs to be decelerated by the reduction gearbox and then output to the executing mechanism. The rotating shaft of the rotor needs to be supported in the bearing chamber of the reduction gearbox through the bearing. At present, the press-fitting of the rotor and the reduction gearbox is either carried out on a large production line (production stage) or manually operated by manpower (maintenance stage). The large production line cannot be applied to the maintenance in the 4S store, and the manual operation highly depends on the experience of manpower and the assembly quality is difficult to guarantee. CONTENT OF THE UTILITY MODEL

[0003] The application provides a rotor press-fitting tool to solve the related technical problems.

[0004] The utility model is realized through the following technical schemes:

[0005] A rotor press-fitting tool, comprising:

[0006] A pressing rod, a pressing claw is arranged at the lower end of the pressing rod, and the pressing claw is used for extruding the outer ring of the rotor bearing;

[0007] A support is used for supporting the pressing rod and transmitting the pressure to the pressing rod;

[0008] The upper end of the pressing rod is movably connected with the support, and the pressing rod can drive the pressing claw to rotate in the horizontal direction.

[0009] Since the diameter of the rotor bearing is smaller than the diameter of the rotor body, the pressing claw angle can be adjusted by the pressing rod, so that the interference between the pressing claw and the rotor body can be avoided, and thus the pressing claw can act on the outer ring of the rotor bearing smoothly. The outer ring of the rotor bearing is the stress surface of the rotor bearing acting on the bearing chamber of the reduction gearbox, so that the pressing claw can press the rotor bearing tightly in the bearing chamber by extruding the outer ring of the bearing.

[0010] Further, the support comprises a column, the upper end of the column is connected with an intermediate plate, and the lower end of the column is connected with a bottom ring; the top surface of the intermediate plate is provided with a pressing plate;

[0011] The bottom ring is used for circumferentially positioning the support;

[0012] The pressing rod is arranged in the bottom ring, and the upper end of the pressing rod penetrates through the intermediate plate and extends into the pressing plate;

[0013] The pressing rod is in clearance fit with the intermediate plate and the pressing plate, and the upper end surface of the pressing rod abuts against the pressing plate.

[0014] When the pressing device applies axial pressure to the pressure plate, the pressure plate can transmit the axial pressure to the pressure claw through the pressure rod, so that the pressure claw extrudes the bearing outer ring.

[0015] Further, the column forms an annular distribution along the bottom ring. This makes the structure of the bracket more stable and less likely to sway, ensuring the axial transmission of pressure.

[0016] Further, the column is provided with a guide block extending towards the pressure rod, and the pressure rod is in sliding connection with the guide block.

[0017] The guide block guides the pressure rod to maintain the vertical state of the pressure rod; the pressure rod is in sliding connection with the guide block, and the pressure rod can rotate in the guide block to adjust the angle of the pressure claw.

[0018] Further, the number of pressure rods is three, and they form an equidistant annular distribution.

[0019] The number of pressure rods is three, and each pressure rod is connected with a pressure claw at the lower end, so that the three pressure claws can be evenly distributed on the bearing outer ring, applying more uniform pressure to the bearing to avoid damage to the bearing due to uneven force.

[0020] Further, the pressure claw includes a pressing block, and the bottom surface of the pressing block is provided with an extrusion part for axially abutting the bearing outer ring.

[0021] The pressing block compensates for the radial size of the pressure rod and transmits the axial pressure of the pressure rod; the extrusion part precisely acts on the bearing outer ring.

[0022] Further, the pressing block is perpendicular to the pressure rod. This facilitates the horizontal extension of the pressing block into the bearing chamber, avoiding motion interference.

[0023] Further, the extrusion part is a contact or a contact strip.

[0024] Further, it also includes a positioning pin horizontally penetrating the pressure plate and the pressure rod.

[0025] The positioning pin can lock the pressure rod on the pressure plate to prevent the pressure rod from detaching from the pressure plate; pulling out the positioning pin can unlock the pressure rod, and rotating the pressure rod can adjust the angle of the pressure claw.

[0026] Further, the upper end of the pressure rod is provided with two pin holes intersecting at the axis. This facilitates locking different angles of the pressure claw. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0028] Figure 1 is a structural schematic diagram of a rotor pressing tool in the embodiment;

[0029] Figure 2 is an assembly schematic diagram of a bottom ring and a bearing chamber in the embodiment;

[0030] Figure 3 is a structural schematic diagram of a pressing rod in the embodiment;

[0031] Figure 4 is a sectional view of the rotor pressing tool in a working state in the embodiment;

[0032] Figure 5 is a schematic diagram of a pressing claw acting on an outer ring of a bearing in the embodiment. EMBODIMENT

[0033] The technical solutions in the present application will be described clearly and completely in the following with reference to the drawings. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort fall within the scope of the present application.

[0034] In order to reduce the pressing difficulty of the rotor and the reduction gearbox and improve the assembly quality, with reference to the rotor pressing tool shown in Figure 1 The rotor pressing tool provided by the embodiment comprises:

[0035] a pressing rod 2, wherein a lower end of the pressing rod 2 is provided with a pressing claw, and the pressing claw is used for extruding an outer ring of a rotor bearing;

[0036] a support, used for supporting the pressing rod 2 and transmitting a pressing force to the pressing rod 2;

[0037] an upper end of the pressing rod 2 is movably connected with the support, and the pressing rod 2 can drive the pressing claw to rotate in a horizontal direction.

[0038] Since the diameter of the rotor bearing is smaller than the diameter of the rotor body, the utility model discloses a pressure lever 2 adjusts the angle of the pressure claw, can avoid the interference of the pressure claw and the rotor body, thereby guaranteeing that the pressure claw can act on the outer ring of the rotor bearing smoothly. The outer ring of the rotor bearing is the stress surface of the bearing chamber of the speed reducer, and therefore the pressure claw can press the rotor bearing tightly in the bearing chamber by extruding the outer ring of the bearing.

[0039] In the embodiment, the support includes a column 5, the upper end of the column is connected to an intermediate plate 6, and the lower end of the column is connected to a bottom ring 1; the top surface of the intermediate plate 6 is provided with a pressing plate 8;

[0040] The bottom ring 1 is used for circumferential positioning of the support, as shown in Figure 2 Figure 2 The local part A shows that the annular boss on the bottom ring 1 is inserted into the opening end of the bearing chamber of the speed reducer, thereby playing a role in circumferential positioning of the support;

[0041] The pressure lever 2 is arranged in the bottom ring 1, the upper end of the pressure lever 2 penetrates through the intermediate plate 6 and extends into the pressing plate 8;

[0042] The pressure lever 2 is in clearance fit with the intermediate plate 6 and the pressing plate 8, and the upper end surface of the pressure lever 2 is in abutment with the pressing plate 8.

[0043] When the pressing device applies axial pressure to the pressing plate 8, the pressing plate 8 can transmit the axial pressure to the pressure claw through the pressure lever 2, so as to extrude the outer ring of the bearing through the pressure claw.

[0044] In the embodiment, in order to facilitate the taking of the rotor pressing tool, a gripper 3 is further arranged on the column 5.

[0045] In the embodiment, the column 5 is arranged in annular distribution along the bottom ring 1. In this way, the structure of the support is more stable and is not prone to shaking, thereby ensuring the axial transmission of pressure.

[0046] In the embodiment, the column 5 is provided with a guide block 4 extending towards the pressure lever 2, and the pressure lever 2 is in sliding connection with the guide block 4.

[0047] The guide block 4 is arranged to guide the pressure lever 2, so as to maintain the vertical state of the pressure lever 2; the pressure lever 2 is in sliding connection with the guide block 4, and the pressure lever 2 can rotate in the guide block 4, so as to facilitate the adjustment of the angle of the pressure claw.

[0048] In the embodiment, the number of the pressure levers 2 is three, and the pressure levers 2 are arranged in equidistant annular distribution.

[0049] The number of the pressure levers 2 is three, and each pressure lever 2 is connected to a pressure claw at the lower end. In this way, the three pressure claws can be uniformly distributed on the outer ring of the bearing, so as to apply more uniform pressure to the bearing and avoid damage to the bearing caused by uneven force.​

[0050] In the specific embodiment, as shown in Figure 3 The pressing jaw comprises a pressing block 201, and the bottom surface of the pressing block 201 is provided with a pressing part 202 for axially abutting the bearing outer ring.

[0051] The axial pressure of the pressing rod 2 is transmitted through the pressing block 201, and the axial pressure is accurately applied to the bearing outer ring through the pressing part 202.

[0052] In the specific embodiment, the pressing block 201 is perpendicular to the pressing rod 2. In this way, the pressing block 201 can horizontally extend into the bearing chamber, avoiding motion interference.

[0053] In the specific embodiment, the pressing part 202 is a contact or a contact strip.

[0054] In the specific embodiment, as shown in Figure 4 It further comprises a positioning pin 7 horizontally penetrating the pressing plate 8 and the pressing rod 2.

[0055] The positioning pin can lock the pressing rod 2 on the pressing plate 8, preventing the pressing rod 2 from being separated from the pressing plate 8; pulling out the positioning pin can unlock the pressing rod 2, and rotating the pressing rod 2 can adjust the angle of the pressing jaw.

[0056] In the specific embodiment, the upper end of the pressing rod 2 is provided with two pin holes intersecting with each other, for example, two pin holes perpendicular to each other. In this way, different angles of the pressing jaw can be locked,

[0057] The working process of the rotor pressing tool in the specific embodiment is as follows:

[0058] First, pull out the positioning pin to unlock the pressing rod 2, and rotate each pressing rod 2 to adjust the angle of the pressing jaw to a position capable of avoiding the rotor body;

[0059] Then, insert the positioning pin to lock the pressing rod 2, and cover the rotor with the bracket downward until the pressing jaw is lowered to a height capable of extending into the bearing chamber of the reduction gearbox;

[0060] After that, pull out the positioning pin again to unlock the pressing rod 2, and adjust the angle of the pressing jaw so that the pressing jaw extends into the bearing chamber and abuts on the outer ring of the rotor bearing, as shown in Figure 5 The pressing part on the pressing jaw accurately acts on the outer ring of the rotor bearing;

[0061] Finally, insert the positioning pin to lock the pressing rod 2, and apply axial pressure to the pressing plate 8 until the bearing outer ring is tightly attached to the bearing chamber.

[0062] Obviously, the above embodiments are merely example for clearly illustrating but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated and it is impossible to enumerate all the embodiments. The changes or variations derived from the above are still within the protection scope of the present application.

Claims

1. A rotor press fitting tool characterized by, The utility model relates to a bearing outer ring extruding device for a reduction gearbox, comprising: a pressing rod, the lower end of which is provided with a pressing jaw for extruding the outer ring of a rotor bearing; a support for supporting the pressing rod and transmitting pressure to the pressing rod; the upper end of the pressing rod is movably connected to the support, and the pressing rod can drive the pressing jaw to rotate in the horizontal direction.

2. The rotor press fitting tool according to claim 1, characterized by The support comprises upright columns, the upper ends of which are connected to an intermediate plate, and the lower ends of which are connected to a bottom ring; the top surface of the intermediate plate is provided with a pressing plate; the bottom ring is used to position the support circumferentially in the bearing chamber of the reduction gearbox; the pressing rod is arranged in the bottom ring, the upper end of the pressing rod penetrates through the intermediate plate and extends into the pressing plate; the pressing rod is in clearance fit with the intermediate plate and the pressing plate, and the upper end surface of the pressing rod abuts against the pressing plate.

3. The rotor press fitting tool according to claim 2, characterized by The upright columns are annularly distributed along the bottom ring.

4. The rotor press fitting tool according to claim 2 or 3, characterized by The upright columns are provided with guide blocks extending towards the pressing rod, and the pressing rod is in sliding connection with the guide blocks.

5. The rotor press fitting tool according to claim 4, wherein The number of the pressing rods is three, and the pressing rods are annularly distributed at equal intervals.

6. The rotor press fitting tool according to claim 1, wherein The pressing jaw comprises a pressing block, the bottom surface of which is provided with an extruding part for axially abutting against the outer ring of the bearing.

7. The rotor press fitting tool according to claim 6, wherein The pressing block is perpendicular to the pressing rod.

8. The rotor press fitting tool according to claim 6, wherein The extruding part is a contact or a contact strip.

9. The rotor press fitting tool according to claim 2, wherein The utility model further comprises a positioning pin horizontally penetrating through the pressing plate and the pressing rod.

10. The rotor press fitting tool according to claim 9, wherein The upper end of the pressing rod is provided with two pin holes intersecting at the axis.

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