CN211009828U - Bearing installation mechanism of reduction gearbox - Google Patents
Bearing installation mechanism of reduction gearbox Download PDFInfo
- Publication number
- CN211009828U CN211009828U CN201922116592.4U CN201922116592U CN211009828U CN 211009828 U CN211009828 U CN 211009828U CN 201922116592 U CN201922116592 U CN 201922116592U CN 211009828 U CN211009828 U CN 211009828U
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- roller bearing
- tapered roller
- end cover
- side wall
- annular
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Abstract
The utility model discloses a bearing installation mechanism of a reduction box, which comprises a main shell, a transmission gear shaft, an upper tapered roller bearing and a lower tapered roller bearing, wherein an upper installation through hole is formed on the upper wall surface of the middle part of the main shell, and an inner installation groove is formed on the inner wall surface of the main shell right below the upper installation through hole; a lower tapered roller bearing is installed in the inner installation groove, the transmission gear shaft is positioned in the main shell, and the bottom end shaft part of the transmission gear shaft is fixed in the lower tapered roller bearing; the mounting and the adjustment of an upper tapered roller bearing and a lower tapered roller bearing in a main shell body are realized by fixing an inner end cover sleeve and an outer end cover on the main shell body, so that the mounting is realized.
Description
The technical field is as follows:
the utility model relates to a fork truck makes technical field, and more specifically says and relates to a bearing installation mechanism of reducing gear box.
Background art:
in the existing forklift gearbox, as shown in fig. 1, a third-stage gear shaft adopts a deep groove ball bearing 1a, and the deep groove ball bearing 1a mainly bears radial load, has high limit rotation speed, is not impact-resistant and is not suitable for bearing heavy load, so that when the forklift gearbox is continuously operated during market leasing, the bearing of the third-stage gear shaft of the gearbox is easily damaged and fails within 2000-3000 hours;
according to the operation requirement of the forklift gearbox, the tapered roller bearing which is low in speed and high in load and can bear radial load and axial load is required to be installed, however, when the tapered roller bearing is installed, the position between the outer ring and the inner ring of the tapered roller bearing needs to be adjusted, namely, the axial gap is required to meet the installation requirement, and the existing gearbox structure does not have a structure capable of adjusting the tapered roller bearing, so that the installation cannot be achieved.
The utility model has the following contents:
the utility model aims at overcoming prior art not enough, providing a bearing installation mechanism of reducing gear box, it adopts inner end cover and outer end cover to fix and realizes the installation and the regulation of the last tapered roller bearing in the main casing body and lower tapered roller bearing on the main casing body, realizes the installation.
The utility model provides a technical problem's scheme is:
a bearing mounting mechanism of a reduction gearbox comprises a main shell, a transmission gear shaft, an upper tapered roller bearing and a lower tapered roller bearing, wherein an upper mounting through hole is formed in the upper wall surface of the middle part of the main shell, and an inner mounting groove is formed in the inner wall surface of the main shell right below the upper mounting through hole;
a lower tapered roller bearing is installed in the inner installation groove, the transmission gear shaft is positioned in the main shell, and the bottom end shaft part of the transmission gear shaft is fixed in the lower tapered roller bearing;
go up the plug bush in the installation through-hole and have inner end cover, the lateral wall of inner end cover is tightly pasted the inside wall of installation through-hole, the shaping of the top lateral wall of inner end cover has the radial extension limit, the bottom surface on radial extension limit presses on the middle part upper wall of the main casing body, outer end cover presses on the top surface on radial extension limit, adjusting bolt's screw rod plug bush is in the through-hole that has the upper and lower alignment of radial extension limit and outer end cover shaping, the end connection of adjusting bolt's screw rod is on the middle part upper wall of the main casing body, the shaping of the bottom surface middle part of outer end cover has the adjusting sleeve body of downwardly extending, go up conical roller bearing's outer lane card and put on the lower part inside wall of inner end cover, the top axial region of transmission gear is fixed on the inside wall of the inner circle of last conical roller bearing.
The outer side wall of the outer ring of the lower tapered roller bearing is clamped on the inner side wall of the inner mounting groove, the bottom end face of the outer ring of the lower tapered roller bearing is pressed on the top face of an annular protruding portion formed on the bottom side portion of the inner mounting groove, the bottom end shaft portion is fixed on the inner side wall of the inner ring of the lower tapered roller bearing, an annular protruding step is formed on the outer side wall of the upper portion of the bottom end shaft portion, and the bottom face of the annular protruding step is pressed on the top end face of the inner ring of the lower tapered roller bearing.
An outer annular groove is formed in the outer side wall of the inner end cover sleeve, the first sealing ring is nested in the outer annular groove, and the outer side wall of the first sealing ring is tightly attached to the inner side wall of the mounting through hole.
And a lower annular groove is formed on the bottom surface of the outer end cover, a second sealing ring is nested in the lower annular groove, and the second sealing ring is pressed against the top surface of the radial extending edge.
An upper annular raised step is formed on the outer side wall of the lower portion of the top shaft portion, the annular sleeve body is clamped in the top shaft portion, the bottom end face of the annular sleeve body is pressed against the top face of the upper annular raised step, and the bottom end face of the inner ring of the upper tapered roller bearing is pressed against the top face of the annular sleeve body.
The utility model discloses an outstanding effect is:
the mounting and the adjustment of an upper tapered roller bearing and a lower tapered roller bearing in a main shell body are realized by fixing an inner end cover sleeve and an outer end cover on the main shell body, so that the mounting is realized.
Description of the drawings:
fig. 1 is a partial structural schematic view at a conventional main casing;
fig. 2 is a partial structural schematic view at the main casing of the present embodiment;
FIG. 3 is a partial top view of the outer end cap installed at the main housing.
The specific implementation mode is as follows:
in an embodiment, as shown in fig. 2 to 3, a bearing mounting mechanism of a reduction gearbox comprises a main housing 10, a transmission gear shaft 20, an upper tapered roller bearing 30 and a lower tapered roller bearing 40, wherein an upper mounting through hole 11 is formed on the upper wall surface of the middle part of the main housing 10, and an inner mounting groove 12 is formed on the inner wall surface of the main housing 10 right below the upper mounting through hole 11;
a lower tapered roller bearing 40 is installed in the inner installation groove 12, the transmission gear shaft 20 is positioned in the main shell 10, and the bottom end shaft part 21 of the transmission gear shaft 20 is fixed in the lower tapered roller bearing 40;
an inner end cover sleeve 50 is inserted and sleeved in the upper mounting through hole 11, the outer side wall of the inner end cover sleeve 50 is tightly attached to the inner side wall of the mounting through hole 11, a radial extending edge 51 is formed on the outer side wall of the top end of the inner end cover sleeve 50, the bottom surface of the radial extending edge 51 is pressed on the upper wall surface of the middle part of the main shell 10, the outer end cover 60 is pressed on the top surface of the radial extending edge 51, a screw rod of the adjusting bolt 1 is inserted and sleeved in a through hole which is formed in the radial extending edge 51 and the outer end cover 60 and aligned up and down, the end part of the screw rod of the adjusting bolt 1 is connected to the upper wall surface of the middle part of the main shell 10, an elastic washer is inserted and sleeved on the upper part of the adjusting bolt 1, the elastic washer is clamped between the head part of the adjusting bolt 1 and the outer end cover 60, an adjusting sleeve body 61 which extends down is formed in the middle part of the bottom surface of the outer end cover, the bottom surface of the regulation sleeve body 61 is pressed against the top end surface of the outer ring of the upper tapered roller bearing 30.
Further, the outer side wall of the outer ring of the lower tapered roller bearing 40 is clamped on the inner side wall of the inner mounting groove 12, the bottom end surface of the outer ring of the lower tapered roller bearing 40 is pressed against the top surface of the annular protrusion 121 formed at the bottom side portion of the inner mounting groove 12, the bottom end shaft portion 21 is fixed on the inner side wall of the inner ring of the lower tapered roller bearing 40, the annular protrusion step 23 is formed on the outer side wall of the upper portion of the bottom end shaft portion 21, and the bottom surface of the annular protrusion step 23 is pressed against the top end surface of the inner ring of the lower tapered roller bearing 40.
Further, an outer annular groove 52 is formed on the outer side wall of the inner end cover sleeve 50, the first seal ring 2 is nested in the outer annular groove 52, and the outer side wall of the first seal ring 2 is closely attached to the inner side wall of the upper mounting through hole 11.
Further, the bottom surface of the outer end cap 60 is formed with a lower annular groove 62, the second seal ring 3 is nested in the lower annular groove 62, and the second seal ring 3 is pressed against the top surface of the radially extending edge 51.
Further, an upper annular protruding step 24 is formed on the lower outer side wall of the top shaft portion 22, the annular sleeve 25 is clamped in the top shaft portion 22, the bottom end surface of the annular sleeve 25 is pressed against the top surface of the upper annular protruding step 24, and the bottom end surface of the inner ring of the upper tapered roller bearing 30 is pressed against the top surface of the annular sleeve 25.
In use, the present embodiment can adjust the force with which the bottom surface of the regulation sleeve body 61 is pressed against the top end surface of the outer ring of the upper tapered roller bearing 30 by inserting a washer on the regulation sleeve body 61, clamping the washer between the outer end cover 60 and the radially extending edge 51, thereby adjusting the position between the outer ring and the inner ring of the upper tapered roller bearing 30, and adjusting the axial gap;
meanwhile, when the adjustment is carried out, the position of the transmission gear shaft 20 can be adjusted, and the vertical position of the inner ring of the lower tapered roller bearing 40 can be realized when the transmission gear shaft 20 is adjusted in the vertical direction, so that the axial gap between the inner ring and the outer ring of the lower tapered roller bearing 40 can be adjusted, and the adjustment is convenient and good.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (5)
1. The utility model provides a bearing installation mechanism of reducing gear box, includes main casing (10), drive gear axle (20), goes up tapered roller bearing (30) and lower tapered roller bearing (40), its characterized in that: an upper mounting through hole (11) is formed in the upper wall surface of the middle of the main shell (10), and an inner mounting groove (12) is formed in the inner wall surface of the main shell (10) right below the upper mounting through hole (11);
a lower tapered roller bearing (40) is installed in the inner installation groove (12), the transmission gear shaft (20) is located in the main shell (10), and a bottom end shaft part (21) of the transmission gear shaft (20) is fixed in the lower tapered roller bearing (40);
go up the plug bush in installation through-hole (11) and have inner end cover (50), the lateral wall of inner end cover (50) is tightly pasted the inside wall of installation through-hole (11), the top lateral wall shaping of inner end cover (50) has radial extension limit (51), the bottom surface of radial extension limit (51) presses on the middle part upper wall of main casing body (10), outer end cover (60) presses on the top surface of radial extension limit (51), the screw rod plug bush of adjusting bolt (1) is in the through-hole of upper and lower alignment that has on radial extension limit (51) and outer end cover (60), the end connection of the screw rod of adjusting bolt (1) is on the middle part upper wall of main casing body (10), the bottom surface middle part shaping of outer end cover (60) has downwardly extending's adjusting sleeve body (61), the outer lane card of going up tapered roller bearing (30) is put on the lower part inside wall of inner end cover (50), the top (22) of transmission gear shaft (20) is fixed on the inside wall portion of the inner side wall of the inner And the bottom surface of the adjusting sleeve body (61) is pressed against the top end surface of the outer ring of the upper tapered roller bearing (30).
2. The bearing mounting mechanism of a reduction gearbox as set forth in claim 1, wherein: the outer side wall of the outer ring of the lower tapered roller bearing (40) is clamped on the inner side wall of the inner mounting groove (12), the bottom end face of the outer ring of the lower tapered roller bearing (40) is pressed on the top face of an annular bulge (121) formed on the bottom side portion of the inner mounting groove (12), the bottom end shaft portion (21) is fixed on the inner side wall of the inner ring of the lower tapered roller bearing (40), an annular bulge step (23) is formed on the outer side wall of the upper portion of the bottom end shaft portion (21), and the bottom face of the annular bulge step (23) is pressed on the top end face of the inner ring of the lower tapered roller bearing (40).
3. The bearing mounting mechanism of a reduction gearbox as set forth in claim 2, wherein: an outer annular groove (52) is formed in the outer side wall of the inner end cover sleeve (50), the first sealing ring (2) is nested in the outer annular groove (52), and the outer side wall of the first sealing ring (2) is tightly attached to the inner side wall of the mounting through hole (11).
4. The bearing mounting mechanism of a reduction gearbox as set forth in claim 1, wherein: the bottom surface of the outer end cover (60) is formed with a lower annular groove (62), the second sealing ring (3) is nested in the lower annular groove (62), and the second sealing ring (3) is pressed against the top surface of the radial extending edge (51).
5. The bearing mounting mechanism of a reduction gearbox as set forth in claim 1, wherein: an upper annular protruding step (24) is formed on the outer side wall of the lower portion of the top end shaft portion (22), the annular sleeve body (25) is clamped in the top end shaft portion (22), the bottom end face of the annular sleeve body (25) is pressed against the top face of the upper annular protruding step (24), and the bottom end face of the inner ring of the upper tapered roller bearing (30) is pressed against the top face of the annular sleeve body (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116592.4U CN211009828U (en) | 2019-12-02 | 2019-12-02 | Bearing installation mechanism of reduction gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116592.4U CN211009828U (en) | 2019-12-02 | 2019-12-02 | Bearing installation mechanism of reduction gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211009828U true CN211009828U (en) | 2020-07-14 |
Family
ID=71472478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922116592.4U Active CN211009828U (en) | 2019-12-02 | 2019-12-02 | Bearing installation mechanism of reduction gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211009828U (en) |
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2019
- 2019-12-02 CN CN201922116592.4U patent/CN211009828U/en active Active
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