CN114516009A - Dismounting device for gerotor motors - Google Patents
Dismounting device for gerotor motors Download PDFInfo
- Publication number
- CN114516009A CN114516009A CN202011298702.4A CN202011298702A CN114516009A CN 114516009 A CN114516009 A CN 114516009A CN 202011298702 A CN202011298702 A CN 202011298702A CN 114516009 A CN114516009 A CN 114516009A
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- CN
- China
- Prior art keywords
- rotor
- stator
- gerotor motor
- dismounting device
- support base
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a dismounting device for a gerotor motor, which comprises a stator and a rotor arranged in the stator. The disassembling device comprises: supporting seat, a plurality of uide pins, and rotor dismounting device. The support seat comprises a first part and a second part positioned below the first part, the first part is provided with a first inner hole, the second part is provided with an inner cavity communicated with the first inner hole, and the first part is used for supporting the stator and allowing the rotor to pass through the first inner hole to enter the inner cavity. A plurality of guide pins are fixed to the first portion of the support base, extend upward from the upper end surface of the first portion of the support base, and are configured to be fitted into fixing holes of a stator of the gerotor motor to position the stator in a radial direction and a circumferential direction of the stator. The rotor removing device is used for applying a downward force to the rotor while rotating the rotor. The dismounting device can effectively reduce surface scratches of the stator and the rotor, greatly reduce dismounting time and reduce labor intensity of workers.
Description
Technical Field
Embodiments of the present invention relate to a dismounting device for a gerotor motor.
Background
The cycloidal motor needs to be reworked when the torque is out of tolerance after the stator and the rotor are assembled, and the rotor needs to be detached from the inner cavity of the stator and then installed into a new rotor again until the matching torque meets the requirement. Due to the matching torque, the rotor and the stator are in a clamping state, the rotor is usually difficult to detach from the inner cavity of the stator by manpower, and particularly, the rotor and the stator of a large-displacement cycloid motor are wide, so that the matching surfaces of the rotor and the stator are wide. The rotor is forcibly detached from the inner cavity of the stator in a knocking mode, and the tooth-shaped outer contour surface of the rotor and the cylindrical surface of the inner cavity of the stator can be scratched. The contact surfaces of the stator and rotor are finely ground, the surface roughness requirement is high and the occurrence of scratches is unacceptable.
Disclosure of Invention
It is an object of embodiments of the present invention to provide a dismounting device for a gerotor motor, whereby e.g. surface scratches of the rotor and the stator of the gerotor motor can be at least reduced.
An embodiment of the present invention provides a disassembling apparatus for a gerotor motor including a stator and a rotor provided in the stator, the disassembling apparatus including:
a support shoe including a first portion having a first bore and a second portion below the first portion having an inner cavity in communication with the first bore, the first portion for supporting the stator and allowing the rotor to pass through the first bore into the inner cavity; a plurality of guide pins fixed to the first portion of the support base, extending upward from an upper end surface of the first portion of the support base, and configured to be engaged with a fixing hole of a stator of the gerotor motor to position the stator in a radial direction and a circumferential direction of the stator; and a rotor removing device for applying a downward force to the rotor while rotating the rotor.
According to an embodiment of the invention, the rotor dismounting device comprises a spline wrench for insertion into the inner bore of the rotor and mating with splines of the inner bore of the rotor.
According to an embodiment of the invention, the first bore of the first portion of the support seat has the same cross-sectional shape as the inner cavity of the stator.
According to an embodiment of the invention, the second portion of the support seat has a cylindrical shape and comprises a second inner bore adjacent to the first inner bore of the first portion of the support seat and an opening in the side wall for extracting the rotor falling in the inner cavity.
According to an embodiment of the present invention, the disassembling apparatus for the cycloid motor further includes: a base plate below the support base, and a second portion of the support base is secured to the base plate.
According to an embodiment of the present invention, the disassembling apparatus for the cycloid motor further includes: a spacer disposed between the second portion of the support base and the bottom plate, the spacer having a hardness less than a hardness of the bottom plate.
According to an embodiment of the present invention, the disassembling apparatus for the cycloid motor further includes: the backing plate is arranged in the second part of the supporting seat and positioned on the partition plate, and the hardness of the backing plate is smaller than that of the partition plate.
According to the embodiment of the invention, the upper end of the second inner hole of the second part of the supporting seat has the same cross-sectional shape with the inner cavity of the stator.
According to an embodiment of the invention, the first part of the support seat is fixed to the second part of the support seat by means of screws.
According to an embodiment of the present invention, the rotor detaching device includes: the spline part is inserted into the inner hole of the rotor and matched with the spline of the inner hole of the rotor so as to rotate the rotor through the spline part; and a shoulder connected with the spline portion and having a diameter greater than a diameter of the inner bore of the rotor and smaller than a diameter of the inner bore of the stator to apply a downward force to the rotor through the shoulder.
According to an embodiment of the present invention, the rotor detaching device further includes: a stem connected to the shoulder; and a handle connected to the stem portion.
With the dismounting device for the gerotor motor according to an embodiment of the present invention, for example, surface scratches of the rotor and the stator of the gerotor motor can be at least reduced.
Drawings
Fig. 1 is a schematic perspective view of a gerotor motor in accordance with an exemplary embodiment of the present invention;
figure 2 is a schematic cross-sectional view of the gerotor motor shown in figure 1;
figure 3 is a schematic side view of the gerotor motor shown in figure 1;
figure 4 is a schematic perspective view of a dismounting device for a gerotor motor according to an exemplary embodiment of the present invention;
figure 5 is a schematic side view of the dismounting device shown in figure 4 in a state of use for dismounting a rotor from a stator of a gerotor motor; and
fig. 6 is a schematic cross-sectional view of the dismounting device taken along line AA in fig. 5, showing the dismounting device in use for dismounting the rotor from the stator of the gerotor motor.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Referring to fig. 1 to 3, a typical gerotor motor 200 includes: the device comprises a shell 21, an output shaft 22, a linkage shaft 23, a partition disc 24, a stator 25, a rotor 26 arranged in the stator 25 and a rear cover 27. The output shaft 22 is coupled to a rotor 26 via a linkage shaft 23. Splines on the outer peripheral surfaces of both ends of the interlocking shaft 23 are respectively coupled with splines in the inner hole of the output shaft 22 and splines in the inner hole of the rotor 26. The stator 25 has a plurality of fixing holes 251 (e.g., 7 through holes), the spacer 24 has a plurality of through holes 241, and the housing 21 has a plurality of screw holes 211 therein, and the stator 25 and the housing 21 are fixed together by bolts 28.
Referring to fig. 4 to 6, a disassembling apparatus 100 for a gerotor motor according to an embodiment of the present invention includes a support base 1, a plurality of guide pins 3, and a rotor disassembling device 5. The support seat 1 comprises a first portion 11 and a second portion 12 located below the first portion 11, the first portion 11 has a first inner hole 110, the second portion 12 has an inner cavity 120 communicated with the first inner hole 110, the first portion 11 is used for supporting the stator and allowing the rotor to pass through the first inner hole 110 to enter the inner cavity 120. The first portion 11 of the support 1 may be secured to the second portion 12 of the support 1 by means of screws 7. A plurality of guide pins 3 are fixed to the first portion 11 of the support base 1, extend upward from the upper end surface of the first portion 11 of the support base 1, and are configured to be fitted into fixing holes 251 of the stator 25 of the gerotor motor 100 to position the stator 25 in the radial direction and the circumferential direction of the stator 25. As shown in fig. 5 and 6, the rotor removing device 5 is used to apply a downward force to the rotor 26 while rotating the rotor 26.
Referring to fig. 5 and 6, in an embodiment of the invention, the rotor remover 5 comprises a spline wrench for insertion into the internal bore of the rotor 26 and for engagement with the splines of the internal bore of the rotor. For example, the rotor removing device 5 includes a spline portion 51, a shoulder portion 53, a connecting portion 52 between the spline portion 51 and the shoulder portion 53, a rod portion 54 connected to the shoulder portion 53, and a handle 55 connected to the rod portion 54. The splined portion 51 of the rotor remover 5 mates with the splines of the inner bore of the rotor 26 to rotate the rotor 26 with the rotor remover 5 through the splined portion 51, while the diameter of the shoulder 53 is larger than the diameter of the inner bore of the rotor 26 and smaller than the diameter of the inner bore of the stator to apply a downward force to the rotor 26 with the rotor remover 5 through the shoulder 53. Further, the connecting portion 52 may not be provided between the spline portion 51 and the shoulder portion 53, but the spline portion 51 and the shoulder portion 53 may be directly connected. The diameter of the stem 54 is smaller than the diameter of the inner bore of the rotor 26. Further, the rotor removing device 5 may take other suitable forms as long as it can apply a downward force to the rotor 26 while rotating the rotor 26.
Referring to fig. 4 to 6, according to the embodiment of the present invention, the first inner hole 110 of the first portion 11 of the support seat 1 has the same cross-sectional shape as the inner cavity of the stator 25, thereby better supporting the stator 25 and better guiding the rotor 26 to rotate down. The second portion 12 of the support seat 1 has a cylindrical shape and comprises a second bore 121 adjacent to the first bore 110 of the first portion 11 of the support seat 1 (the second bore 121 may also have the same cross-sectional shape as the cavity of the stator 25) and an opening 122 in the side wall, the opening 122 being used to extract the rotor 26 that falls into the cavity. It will be appreciated that the first and second bores may be sized slightly larger than the interior cavity of the stator 25 to facilitate removal of the rotor. The first and second parts 11, 12 of the support 1 may be two parts connected together by the screw 7 as shown in figures 4 to 6, or the first and second parts 11, 12 of the support 1 may be integral.
Referring to fig. 4 to 6, according to an embodiment of the present invention, the detaching device 100 further includes: a base plate 61, the base plate 61 being below the support base 1 and the second portion 12 of the support base 1 being secured to the base plate 61. The detaching device 100 may further include: and the partition plate 62 is arranged between the second part 12 of the support seat 1 and the bottom plate 61, and the hardness of the partition plate 62 is less than that of the bottom plate 61. According to an example of the present invention, the detaching device 100 may further include: a shim plate 63, the shim plate 63 being arranged in the second portion 12 of the support base 1 and on the spacer plate 62, the shim plate 63 having a hardness less than that of the spacer plate 62. The partition plate 62 may be made of a nylon plate to prevent the end surface of the rotor from being damaged when the rotor falls down, and particularly has a good buffering effect on the rotor of a large-displacement cycloid motor. The backing plate 63 can be made of a silica gel plate, so that the end face of the rotor is prevented from being damaged when the rotor falls, and the backing plate has a good buffer effect particularly on the rotors of the cycloid motors with medium and small displacement.
In addition, referring to fig. 4 and 5, the dismounting device 100 can further include a locking screw 8, and the locking screw 8 has a limiting function to prevent the backing plate 63 from transversely shifting out of the supporting seat 1. The locking screw 8 simultaneously fixes the spacer 62, and further, as shown in fig. 6, the support base 1 and the bottom plate 61 are fixed together by the screw 64, and the spacer 62 is sandwiched between the support base 1 and the bottom plate 61. The support base 1 has a recess in which the spacer 62 and the stay 1 are placed.
With the dismounting device according to the embodiment of the present invention, it is possible to fix the stator 25 to the 3 positioning pins 3 through the fixing holes 251 of the stator 25, insert the rotor dismounting device 5 such as a spline wrench into the inner hole of the rotor 26, and apply a force downward while rotating the rotor 26, so as to realize that the rotor 26 continuously rotates away from the inner cavity of the stator 25, and finally falls onto the backing plate 63 (made of, for example, a silicone pad). By adopting the dismounting device provided by the embodiment of the invention, the obvious surface scratch caused by the downward sliding of the rotor 56 in the dismounting process can be effectively reduced, the dismounting time is greatly reduced, and the labor intensity of workers in operation is reduced.
While the above embodiments have been described, some of the features of the above embodiments may be combined to form new embodiments.
Claims (11)
1. A dismounting device for a gerotor motor, the gerotor motor including a stator and a rotor disposed in the stator, the dismounting device comprising:
a support shoe including a first portion having a first bore and a second portion below the first portion having an inner cavity in communication with the first bore, the first portion for supporting the stator and allowing the rotor to pass through the first bore into the inner cavity;
a plurality of guide pins fixed to the first portion of the support base, extending upward from an upper end surface of the first portion of the support base, and configured to be engaged with a fixing hole of a stator of the gerotor motor to position the stator in a radial direction and a circumferential direction of the stator; and
a rotor removing device for applying a downward force to the rotor while rotating the rotor.
2. The dismounting device for a gerotor motor of claim 1, wherein:
the rotor dismounting device comprises a spline wrench, and the spline wrench is used for being inserted into the inner hole of the rotor and matched with the spline of the inner hole of the rotor.
3. The dismounting device for a gerotor motor of claim 1, wherein:
the first inner hole of the first part of the supporting seat and the inner cavity of the stator have the same cross-sectional shape.
4. The dismounting device for a gerotor motor of claim 1, wherein:
the second portion of the bearing seat has a cylindrical shape and includes a second bore adjacent the first bore of the first portion of the bearing seat and an opening in the sidewall for removal of a rotor falling in the internal cavity.
5. The takedown apparatus for a gerotor motor of claim 1, further comprising:
a bottom plate below the support base, and a second portion of the support base is secured to the bottom plate.
6. The takedown apparatus for a gerotor motor of claim 5, further comprising:
a spacer disposed between the second portion of the support base and the bottom plate, the spacer having a hardness less than a hardness of the bottom plate.
7. The takedown apparatus for a gerotor motor of claim 5, further comprising:
the backing plate is arranged in the second part of the supporting seat and positioned on the partition plate, and the hardness of the backing plate is smaller than that of the partition plate.
8. The dismounting device for a gerotor motor of claim 4, wherein:
the upper end of the second inner hole of the second part of the supporting seat and the inner cavity of the stator have the same cross sectional shape.
9. The dismounting device for a gerotor motor of claim 8, wherein:
the first portion of the support base is secured to the second portion of the support base by screws.
10. The dismounting device for a gerotor motor of claim 1, wherein:
the rotor detaching device includes:
the spline part is inserted into the inner hole of the rotor and matched with the spline of the inner hole of the rotor so as to rotate the rotor through the spline part; and
a shoulder connected with the spline portion and having a diameter greater than a diameter of the inner bore of the rotor and less than a diameter of the inner bore of the stator to apply a downward force to the rotor through the shoulder.
11. The takedown apparatus for a gerotor motor of claim 10 wherein:
the rotor detaching device further includes: a stem connected to the shoulder; and a handle connected to the stem portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298702.4A CN114516009A (en) | 2020-11-18 | 2020-11-18 | Dismounting device for gerotor motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298702.4A CN114516009A (en) | 2020-11-18 | 2020-11-18 | Dismounting device for gerotor motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114516009A true CN114516009A (en) | 2022-05-20 |
Family
ID=81594171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011298702.4A Pending CN114516009A (en) | 2020-11-18 | 2020-11-18 | Dismounting device for gerotor motors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114516009A (en) |
-
2020
- 2020-11-18 CN CN202011298702.4A patent/CN114516009A/en active Pending
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