CN220201269U - Heavy-load synchronous multistage guiding electric cylinder - Google Patents
Heavy-load synchronous multistage guiding electric cylinder Download PDFInfo
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- CN220201269U CN220201269U CN202321622815.4U CN202321622815U CN220201269U CN 220201269 U CN220201269 U CN 220201269U CN 202321622815 U CN202321622815 U CN 202321622815U CN 220201269 U CN220201269 U CN 220201269U
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- 238000012423 maintenance Methods 0.000 description 2
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Abstract
The utility model discloses a heavy-load synchronous multistage guiding electric cylinder, which comprises an electric cylinder body, a motor and a reduction gearbox, wherein the motor is arranged on the electric cylinder body; the electric cylinder body is provided with a coaxial transmission shaft, a hollow ball screw shaft, a screw and nut integrated shaft, a nut and push rod integrated shaft, a cylinder barrel, a primary support sleeve, a secondary support sleeve and a bearing end cover from inside to outside. The screw nut integral shaft and the nut push rod integral shaft can synchronously stretch along the axial direction when the transmission shaft drives the screw nut integral shaft to rotate, and simultaneously the primary support sleeve and the secondary support sleeve are driven to sequentially stretch out or retract. The electric cylinder is internally provided with two-stage transmission, and the outside is provided with two-stage supporting sleeves and one-stage pushing rods, so that the sleeving length between each stage is increased, the space volume is reduced, the integral rigidity of the electric cylinder is increased, and the lateral bearing capacity is enhanced.
Description
Technical Field
The utility model belongs to the technical field of electric cylinder transmission, and particularly relates to a heavy-duty type synchronous electric cylinder which is guided in multiple stages and can bear larger side load.
Background
The jack for the aircraft is an indispensable supporting device for aircraft maintenance. The existing jacks in the market are complex and various, and can be generally divided into mechanical type, hydraulic type, electrohydraulic hybrid type and electric type according to the working principle. The electric cylinder has the characteristics of high energy efficiency, no pollution, excellent control performance and the like, and is widely applied to the fields of aerospace, national defense equipment, high-end equipment such as a numerical control lathe and the like. And the full electrochemical of the jack for the machine can greatly improve the convenience, the safety and the environmental adaptability. However, the electric jack for aircraft maintenance has the difficulty that the electric jack requires small axial occupied space and large stroke, and simultaneously ensures larger lateral bearing capacity. Aiming at the problems, the utility model provides a heavy two-stage synchronous multistage guiding electric cylinder.
Disclosure of Invention
The utility model aims to provide a heavy-load synchronous multistage-guiding electric cylinder, wherein the inside of the electric cylinder is in two-stage transmission, the outside of the electric cylinder is in two-stage supporting sleeve and one-stage pushing rod, so that the nesting length between stages is increased, the space volume is reduced, the integral rigidity of the electric cylinder is increased, and the lateral bearing capacity is enhanced.
The technical scheme of the utility model is that the heavy-load synchronous multistage guiding electric cylinder comprises a motor, a speed reducer, a gear box, a transmission shaft assembly, a hollow ball screw shaft, a screw and nut integrated shaft, a nut and push rod integrated shaft assembly, a primary support sleeve assembly, a secondary support sleeve assembly, a cylinder barrel assembly and a bearing end cover; the motor is fixed at one side of the gear box after being connected with the speed reducer; the gear box consists of a gear box body, a driving wheel, an idler wheel, a driven wheel, a gear box cover and a four-point angular contact ball bearing; the transmission shaft assembly consists of a transmission shaft, a deep groove ball bearing, a bearing gland and a transmission key; the nut and push rod integrated shaft assembly consists of a nut and push rod integrated shaft, a guide support on the nut and push rod integrated shaft, a guide key on the nut and push rod integrated shaft and a nut and push rod integrated shaft end gland; the primary support sleeve assembly consists of a secondary support sleeve rear guide support, a guide key on the secondary support sleeve, a secondary support sleeve front guide support and a secondary support sleeve end gland; the secondary support sleeve assembly consists of a primary support sleeve rear guide support, a primary support sleeve upper guide key, a primary support sleeve front guide support and a primary support sleeve end gland; the cylinder barrel assembly consists of a cylinder barrel, a cylinder barrel end gland and a cylinder barrel upper guide support;
the driven wheel is fixedly connected with the transmission shaft and is supported on the gear box cover through a four-point angular contact ball bearing; the hollow ball screw shaft is fixedly connected with the gear box body, the upper end part of the hollow ball screw shaft is mutually supported with the transmission shaft through a deep groove ball bearing, and the deep groove ball bearing is pressed by a bearing gland; the bearing gland is fixedly connected with the transmission shaft through threads, and two transmission keys which are symmetrically arranged are arranged on the outer side of the bearing gland; the inner hole of the screw nut integrated shaft is provided with symmetrically arranged inner keyways, and the transmission key is matched with the screw nut integrated shaft and can axially slide in the inner keyways;
the electric cylinder body is provided with a coaxial transmission shaft, a hollow ball screw shaft, a screw and nut integrated shaft, a nut and push rod integrated shaft, a cylinder barrel, a primary support sleeve, a secondary support sleeve and a bearing end cover; the screw nut integral shaft is designed with an inner spiral rollaway nest and an outer spiral rollaway nest with different rotation directions, wherein the inner spiral rollaway nest is matched with the outer spiral rollaway nest of the hollow ball screw shaft, and the outer spiral rollaway nest is matched with the inner spiral rollaway nest of the nut push rod integral shaft; when the transmission shaft drives the screw nut integral shaft to rotate, the screw nut integral shaft and the nut push rod integral shaft can synchronously stretch along the axial direction, and simultaneously drive the primary support sleeve and the secondary support sleeve to sequentially stretch out or retract.
Further, two guide keys which are symmetrically arranged are designed on the outer side of the nut push rod integrated shaft, an inner key groove which is symmetrically arranged is designed in an inner hole of the secondary support sleeve, and the guide key on the nut push rod integrated shaft is matched with the secondary support sleeve and can axially slide in the key groove.
Further, two guide keys which are symmetrically arranged are designed on the outer side of the secondary support sleeve, an inner hole of the primary support sleeve is designed with an inner key groove which is symmetrically arranged, and the guide keys on the secondary support sleeve are matched with the primary support sleeve and can axially slide in the key groove.
Further, two guide keys which are symmetrically arranged are designed on the outer side of the primary support sleeve, an inner key groove which is symmetrically arranged is designed in an inner hole of the cylinder barrel, and the guide keys on the primary support sleeve are matched with the cylinder barrel and can axially slide in the key groove.
Further, radial support is maintained between the nut push rod integral shaft and the secondary support sleeve through a guide support on the nut push rod integral shaft and a front guide support of the secondary support sleeve.
Further, radial support is maintained between the secondary support sleeve and the primary support sleeve by a secondary support sleeve rear guide support and a primary support sleeve front guide support.
Further, radial support is maintained between the primary support sleeve and the cylinder by a primary support sleeve rear guide support and a cylinder upper guide support.
Further, the nut push rod integral shaft end gland is fixed at the front end of the nut push rod integral shaft through internal threads, and the bearing end cover is fixed at the front end of the nut push rod integral shaft through internal threads.
Further, the end gland of the secondary support sleeve is fixed at the front end of the secondary support sleeve through internal threads.
Further, the end gland of the primary support sleeve is fixed at the front end of the primary support sleeve through internal threads; the cylinder barrel end gland is fixed at the front end of the cylinder barrel through internal threads.
The beneficial effects of the utility model are as follows:
1. the overall axial dimension of the electric cylinder is further reduced;
2. according to the screw nut integrated shaft, the rotation directions of the internal threads and the external threads are different, when the transmission shaft drives the screw nut integrated shaft to rotate, the screw nut integrated shaft and the nut push rod integrated shaft can synchronously stretch along the axial direction, and meanwhile, the primary support sleeve and the secondary support sleeve are driven to sequentially stretch out or retract.
3. The electric cylinder is internally provided with two-stage transmission, and the outside is provided with two-stage supporting sleeves and one-stage pushing rods, so that the sleeving length between each stage is increased, the space volume is reduced, the integral rigidity of the electric cylinder is increased, and the lateral bearing capacity is enhanced.
Drawings
FIG. 1 is a retraction structure diagram of a heavy-duty synchronous multistage-oriented electric cylinder according to the present utility model;
FIG. 2 is a drawing of an extension structure of a heavy-duty synchronous multistage-oriented electric cylinder according to the utility model;
FIG. 3 is an enlarged partial view of FIG. 2;
fig. 4 is a partial enlarged view of fig. 2.
Reference numerals illustrate:
a motor 1; a speed reducer 2; a gear box 3; a gear housing 3.1; 3.2 parts of driving wheel; idler 3.3; driven wheel 3.4; 3.5 parts of a gear box cover; a four-point angular contact ball bearing 3.6; a drive shaft assembly 4; a drive shaft 4.1; deep groove ball bearings 4.2; bearing cover 4.3; a drive key 4.4; a hollow ball screw shaft 5; a screw-nut integrated shaft 6; a nut-push rod integrated shaft assembly 7; a nut and push rod integrated shaft 7.1; a nut push rod integrated shaft is guided and supported by 7.2; 7.3, a guide key is arranged on the nut push rod integrated shaft; 7.4, a nut and push rod integrated shaft end gland; a primary support sleeve assembly 8; the rear guide support of the secondary support sleeve is 8.1; a guide key 8.2 is arranged on the secondary support sleeve; a secondary support sleeve 8.3; the front guide support of the secondary support sleeve is 8.4; 8.5, a second-stage supporting sleeve end gland; a secondary support sleeve assembly 9; the rear guide support of the first-stage support sleeve is 9.1; a guide key 9.2 is arranged on the primary support sleeve; a primary support sleeve 9.3; the front guide support of the first-stage support sleeve is 9.4; a first-stage supporting sleeve end gland 9.5; a cylinder assembly 10; a cylinder 10.1; a cylinder barrel end gland 10.2; a cylinder barrel upper guide support 10.3; carrying an end cap 11.
Detailed Description
As shown in fig. 1, 2, 3 and 4, the heavy-load synchronous multistage guiding electric cylinder comprises a motor 1, a speed reducer 2, a gear box 3, a transmission shaft assembly 4, a hollow ball screw shaft 5, a screw nut integrated shaft 6, a nut and push rod integrated shaft assembly 7, a primary supporting sleeve assembly 8, a secondary supporting sleeve assembly 9, a cylinder barrel assembly 10 and a bearing end cover 11. The motor 1 is connected with the speed reducer 2 and then fixed at one side of the gear box 3; the gear box 3 consists of a gear box body 3.1, a driving wheel 3.2, an idler wheel 3.3, a driven wheel 3.4, a gear box cover 3.5 and a four-point angular contact ball bearing 3.6; the driven wheel 3.4 is fixedly connected with the transmission shaft 4.1 and is supported on the gear box cover 3.5 through a four-point angular contact ball bearing 3.6; the hollow ball screw shaft 5 is fixedly connected with the gear box body 3.1, the upper end part of the hollow ball screw shaft is mutually supported with the transmission shaft 4.1 through a deep groove ball bearing 4.2, and the deep groove ball bearing 4.2 is tightly pressed by a bearing gland 4.3; the bearing cover 4.3 is fixedly connected with the transmission shaft 4.1 by threads, and two transmission keys 4.4 which are symmetrically arranged are designed on the outer side of the bearing cover, as shown in fig. 3.
As shown in fig. 2, an inner hole of the screw nut integral shaft 6 is designed with symmetrically arranged inner keyways, and the transmission key 4.4 is matched with the screw nut integral shaft 6 and can axially slide in the inner keyways; the screw-nut integral shaft 6 is designed with inner and outer spiral raceways of different spin directions, wherein the inner spiral raceway is matched with the outer spiral raceway of the hollow ball screw shaft 5, and the outer spiral raceway is matched with the inner spiral raceway of the nut-push rod integral shaft 7.1.
Two guide keys 7.3 which are symmetrically arranged are designed on the outer side of the nut push rod integrated shaft 7.1, inner keyways which are symmetrically arranged are designed in the inner hole of the secondary support sleeve 8.3, and the guide keys 7.3 on the nut push rod integrated shaft are matched with the inner keyways and can axially slide in the keyways; two symmetrically arranged guide keys 8.2 are designed on the outer side of the secondary support sleeve 8.3, inner holes of the primary support sleeve 9.3 are designed with symmetrically arranged inner key grooves, and the guide keys 8.1 on the secondary support sleeve are matched with the inner key grooves and can axially slide in the key grooves; two guide keys 9.2 which are symmetrically arranged are designed on the outer side of the primary support sleeve 9.3, inner keyways which are symmetrically arranged are designed in the inner hole of the cylinder barrel 10.1, and the guide keys 9.2 on the primary support sleeve are matched with the inner keyways and can axially slide in the keyways.
The nut push rod integral shaft 7.1 and the secondary support sleeve 8.3 are kept in radial support through a guide support 7.2 on the nut push rod integral shaft and a front guide support 8.4 of the secondary support sleeve; radial support is maintained between the secondary support sleeve 8.3 and the primary support sleeve 9.3 through a secondary support sleeve rear guide support 8.1 and a primary support sleeve front guide support 9.4; radial support is maintained between the primary support sleeve 9.3 and the cylinder 10.1 by the primary support sleeve rear guide support 9.1 and the cylinder upper guide support 10.3.
The nut push rod integrated shaft end gland 7.4 is fixed at the front end of the nut push rod integrated shaft 7.1 through internal threads, and the bearing end cover 11 is fixed at the front end of the nut push rod integrated shaft 7.1 through internal threads; the end gland 8.5 of the secondary support sleeve is fixed at the front end of the secondary support sleeve 8.3 through internal threads; the first-stage support sleeve end gland 9.5 is fixed at the front end of the first-stage support sleeve 9.3 through internal threads; the cylinder head gland 10.2 is fixed at the front end of the cylinder 10.1 by internal threads.
The motor 1 drives the driven wheel 3.4 and the transmission shaft 4.1 to rotate together through the speed reducer 2 and the transmission box 3, and when the transmission key 4.4 drives the screw nut integrated shaft 6 to rotate, the screw nut integrated shaft 6 and the nut push rod integrated shaft 7.1 can synchronously stretch out and draw back along the axial direction, and simultaneously drives the primary support sleeve 9.3 and the secondary support sleeve 8.3 to stretch out or retract in sequence.
According to the transmission mode, the multistage support sleeves can be arranged according to different strokes, so that the sleeve length between the sleeves at different stages is increased, and the overall lateral bearing capacity of the electric cylinder is improved.
Claims (10)
1. The heavy-load synchronous multistage guiding electric cylinder comprises a motor (1), a speed reducer (2), a gear box (3), a transmission shaft assembly (4), a hollow ball screw shaft (5), a screw and nut integrated shaft (6), a nut and push rod integrated shaft assembly (7), a primary supporting sleeve assembly (8), a secondary supporting sleeve assembly (9), a cylinder barrel assembly (10) and a bearing end cover (11); the motor is characterized in that the motor (1) is connected with the speed reducer (2) and then is fixed at one side of the gear box (3); the gear box (3) consists of a gear box body (3.1), a driving wheel (3.2), an idler wheel (3.3), a driven wheel (3.4), a gear box cover (3.5) and a four-point angular contact ball bearing (3.6); the transmission shaft assembly (4) consists of a transmission shaft (4.1), a deep groove ball bearing (4.2), a bearing gland (4.3) and a transmission key (4.4); the nut and push rod integrated shaft assembly (7) consists of a nut and push rod integrated shaft (7.1), a guide support (7.2) on the nut and push rod integrated shaft, a guide key (7.3) on the nut and push rod integrated shaft and a nut and push rod integrated shaft end gland (7.4); the primary support sleeve assembly (8) consists of a secondary support sleeve rear guide support (8.1), a secondary support sleeve upper guide key (8.2), a secondary support sleeve (8.3), a secondary support sleeve front guide support (8.4) and a secondary support sleeve end gland (8.5); the secondary support sleeve assembly (9) consists of a primary support sleeve rear guide support (9.1), a primary support sleeve upper guide key (9.2), a primary support sleeve (9.3), a primary support sleeve front guide support (9.4) and a primary support sleeve end gland (9.5); the cylinder barrel assembly (10) consists of a cylinder barrel (10.1), a cylinder barrel end gland (10.2) and a cylinder barrel upper guide support (10.3);
the driven wheel (3.4) is fixedly connected with the transmission shaft (4.1) and is supported on the gear box cover (3.5) through a four-point angular contact ball bearing (3.6); the hollow ball screw shaft (5) is fixedly connected with the gear box body (3.1), the upper end part of the hollow ball screw shaft is mutually supported with the transmission shaft (4.1) through a deep groove ball bearing (4.2), and the deep groove ball bearing (4.2) is pressed by a bearing pressing cover (4.3); the bearing gland (4.3) is fixedly connected with the transmission shaft (4.1) through threads, two transmission keys (4.4) which are symmetrically arranged are designed on the outer side of the bearing gland, inner holes of the screw nut integrated shaft (6) are symmetrically arranged inner key grooves, and the transmission keys (4.4) are matched with the screw nut integrated shaft (6) and can axially slide in the inner key grooves;
the electric cylinder body is provided with a coaxial transmission shaft (4.1), a hollow ball screw shaft (5), a screw nut integrated shaft (6), a nut and push rod integrated shaft (7.1), a cylinder barrel (10.1), a primary support sleeve (9.3), a secondary support sleeve (8.3) and a bearing end cover (11); the screw and nut integrated shaft (6) is designed with an inner spiral rollaway nest and an outer spiral rollaway nest with different rotation directions, wherein the inner spiral rollaway nest is matched with the outer spiral rollaway nest of the hollow ball screw shaft (5), and the outer spiral rollaway nest is matched with the inner spiral rollaway nest of the nut and push rod integrated shaft (7.1); when the transmission shaft (4.1) drives the screw nut integral shaft (6) to rotate, the screw nut integral shaft (6) and the nut push rod integral shaft (7.1) can synchronously stretch along the axial direction, and simultaneously drive the primary support sleeve (9.3) and the secondary support sleeve (8.3) to stretch out or retract in sequence.
2. The heavy-duty synchronous multistage-guiding electric cylinder according to claim 1, wherein two nut-pushing-rod integrated shaft upper guide keys (7.3) which are symmetrically arranged are designed on the outer side of the nut-pushing-rod integrated shaft (7.1), inner holes of the secondary support sleeve (8.3) are designed with inner key grooves which are symmetrically arranged, and the nut-pushing-rod integrated shaft upper guide keys (7.3) are matched with the secondary support sleeve (8.3) and can axially slide in the key grooves.
3. The heavy-duty synchronous multistage-guiding electric cylinder according to claim 1, wherein two upper guide keys (8.2) of the two secondary support sleeves are symmetrically arranged outside the secondary support sleeve (8.3), inner holes of the primary support sleeve (9.3) are symmetrically arranged inner key grooves, and the upper guide keys (8.2) of the secondary support sleeve are matched with the primary support sleeve (9.3) and can axially slide in the key grooves.
4. The heavy-duty synchronous multistage-guiding electric cylinder as claimed in claim 1, characterized in that two upper-stage-supporting-sleeve guide keys (9.2) which are symmetrically arranged are designed on the outer side of the first-stage-supporting sleeve (9.3), inner-hole design of the cylinder barrel (10.1) is provided with inner-key grooves which are symmetrically arranged, and the upper-stage-supporting-sleeve guide keys (9.2) are matched with the cylinder barrel (10.1) and can axially slide in the key grooves.
5. A heavy-duty synchronous multistage-pilot electric cylinder as claimed in claim 1, characterized in that radial support is maintained between the nut-pushrod integrated shaft (7.1) and the secondary support sleeve (8.3) by means of a nut-pushrod integrated on-shaft pilot support (7.2) and a secondary support sleeve front pilot support (8.4).
6. A heavy-duty synchronous multistage pilot cylinder as claimed in claim 1, characterized in that radial support is maintained between the secondary support sleeve (8.3) and the primary support sleeve (9.3) by means of a secondary support sleeve rear pilot support (8.1) and a primary support sleeve front pilot support (9.4).
7. A heavy-duty synchronous multistage pilot cylinder as claimed in claim 1, characterized in that radial support is maintained between the primary support sleeve (9.3) and the cylinder (10.1) by means of a primary support sleeve rear pilot support (9.1) and a cylinder upper pilot support (10.3).
8. The heavy-duty synchronous multistage-guiding electric cylinder according to claim 1, wherein a nut-push-rod-integrated shaft end cover (7.4) is fixed at the front end of the nut-push-rod-integrated shaft (7.1) through internal threads, and a bearing end cover (11) is fixed at the front end of the nut-push-rod-integrated shaft (7.1) through internal threads.
9. A heavy-duty synchronous multistage-guided electric cylinder according to claim 1, characterized in that the secondary support sleeve end gland (8.5) is fixed at the front end of the secondary support sleeve (8.3) by internal threads.
10. The heavy-duty synchronous multistage-guiding electric cylinder according to claim 1, wherein a first-stage supporting sleeve end gland (9.5) is fixed at the front end of the first-stage supporting sleeve (9.3) through internal threads; the cylinder barrel end gland (10.2) is fixed at the front end of the cylinder barrel (10.1) through internal threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321622815.4U CN220201269U (en) | 2023-06-26 | 2023-06-26 | Heavy-load synchronous multistage guiding electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321622815.4U CN220201269U (en) | 2023-06-26 | 2023-06-26 | Heavy-load synchronous multistage guiding electric cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220201269U true CN220201269U (en) | 2023-12-19 |
Family
ID=89142556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321622815.4U Active CN220201269U (en) | 2023-06-26 | 2023-06-26 | Heavy-load synchronous multistage guiding electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220201269U (en) |
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2023
- 2023-06-26 CN CN202321622815.4U patent/CN220201269U/en active Active
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