CN214218019U

CN214218019U - Be applied to lift platform's high accuracy lead screw spiral bevel gear speed reducer

Info

Publication number: CN214218019U
Application number: CN202023256672.9U
Authority: CN
Inventors: 曾益良; 周建华
Original assignee: Guangdong Zhuohongda Intelligent Transmission Technology Co Ltd
Current assignee: Guangdong Zhuohongda Intelligent Transmission Technology Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-17
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a be applied to high accuracy lead screw spiral bevel gear speed reducer of lift platform, including input motor, connection axle bed, fixed axle bed, lead screw, input motor nestedly is fixed with the protective sleeve outside the limit week of output shaft, the front end fixedly connected with connection axle bed of protective sleeve, the inside of fixed axle bed is formed with the cylindricality chamber that link up top, bottom, the output shaft outside end fixedly connected with transmission shaft of input motor, the front end fixedly connected with of transmission shaft is with the bevel gear of coaxial axis rotation, bevel gear is located the cylindricality chamber; the top of the fixed shaft seat is fixedly connected with an installation shaft plate, a main shaft hole is formed in the middle of the installation shaft plate, the bottom of the fixed shaft seat is fixedly connected with an installation shaft seat, a reverser matched and meshed with a screw rod is rotatably connected in the installation shaft seat, and the top wall of the annular installation plate is fixedly connected with a bevel gear which is coaxial and matched and meshed with the bevel gear.

Description

Be applied to lift platform's high accuracy lead screw spiral bevel gear speed reducer

Technical Field

The utility model belongs to the technical field of the speed reducer, concretely relates to be applied to high accuracy lead screw spiral bevel gear speed reducer of lift platform.

Background

The speed reducer has a wide application in various mechanical devices, and the existing speed reducer applied to the lifting platform mainly includes a planetary gear speed reducer and a worm speed reducer, wherein the planetary gear speed reducer has the advantages of high bearing capacity, large output torque, high efficiency and the like, and is widely applied to heavy-duty equipment, but the control range of the stroke is single and inaccurate, and usually only a specific large-range stroke can be set, so that it is difficult to determine the stroke with accurate precision, and the worm speed reducer has a relatively accurate small-stroke range due to relatively small and stable output torque, but the bearing capacity is poor and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be applied to lift platform's high accuracy lead screw spiral bevel gear speed reducer to solve the problem that provides among the above-mentioned background art.

This utility model adopts for achieving the above purpose:

the utility model provides a be applied to high accuracy lead screw spiral bevel gear speed reducer of lift platform, includes input motor, connection axle bed, fixed axle bed, lead screw, input motor is fixed with the protective sleeve in the edge week outside nestification of output shaft, the front end fixedly connected with of protective sleeve connects the axle bed, the inside of fixed axle bed is formed with the cylindrical cavity that link up top, bottom, fixed axle bed sets up with connecting the axle bed is mutually perpendicular, be formed with the counterpoint shaft hole that matches with connecting the axle bed counterpoint on a lateral wall of fixed axle bed, the front end embedding of connecting the axle bed is on the counterpoint shaft hole and fix on the lateral wall of fixed axle bed, the output shaft outside fixedly connected with transmission shaft of input motor, the preceding, the rear end of connecting the axle bed are formed with the annular groove, the embedded ball bearing that is provided with coaxial line of ring channel, the preceding, The rear part of the transmission shaft is respectively embedded into ball bearings arranged in annular grooves at the front side and the rear side of the connection shaft seat, annular baffles are respectively formed at the front end and the rear end of the circumferential side wall of the transmission shaft, the inner side wall of each annular baffle is abutted against the outer side wall of each ball bearing, a bevel gear rotating by a coaxial line is fixedly connected at the front end of the transmission shaft, and the bevel gear is positioned in a cylindrical cavity; the top of the fixed shaft seat is fixedly connected with an installation shaft plate, the middle of the installation shaft plate is provided with a main shaft hole, the bottom of the installation shaft plate is provided with a first embedding groove which is coaxial with the main shaft hole at the periphery of the main shaft hole, a ball bearing with a coaxial line is embedded in the first embedding groove, a limit shaft sleeve is rotationally connected in the ball bearing of the first embedding groove, the lower part of the outer side wall of the limit shaft sleeve is provided with a thickened wall with the top end attached to the bottom wall of the ball bearing in the first embedding groove, the inner side wall of the limit shaft sleeve is provided with threads, a screw rod which is matched and meshed is embedded in the limit shaft sleeve, the bottom of the fixed shaft seat is fixedly connected with an installation shaft seat, the center of the bottom of the installation shaft seat is provided with an auxiliary shaft hole which is opposite to the main shaft hole, and the bottom of the installation shaft seat is provided with a second embedding groove above the auxiliary shaft hole, the ball bearing with the coaxial line is embedded in the second embedding groove, the reverser is connected in the mounting shaft seat in a rotating mode, the screw rod is meshed in a matched mode, the limiting baffle is formed on the upper portion of the reverser, the bottom wall of the limiting baffle abuts against the top wall of the ball bearing in the second embedding groove, the lower end of the reverser extends to the lower portion of the mounting shaft seat through the auxiliary shaft hole, the annular mounting plate is fixedly connected to the periphery of the top end of the reverser, the bevel gear which is coaxial with the coaxial line and meshed with the bevel gear is fixedly connected to the top wall of the annular mounting plate, the lower end of the screw rod extends to the lower portion of the reverser through the middle portion of the bevel gear and the reverser, and the tooth surface of the bevel gear is meshed and in key joint with the tooth surface of the bevel gear.

Further, the middle top wall of the bevel gear abuts against the bottom wall of the limiting shaft sleeve.

It is further explained that the output shaft of the input motor, the protective sleeve, the connecting shaft seat, the alignment shaft hole, the transmission shaft, the annular groove and the axis line of the bevel gear coincide.

It is further explained that the axes of the mounting shaft plate, the main shaft hole, the limit shaft sleeve, the screw rod, the mounting shaft seat, the auxiliary shaft hole, the second tabling groove, the reverser and the bevel gear are coincided.

Further explaining, the top end of the screw rod is rotatably connected with a matched rotating shaft sleeve.

Compared with the prior art, the beneficial effects of the utility model reside in that:

use in reality, output shaft through input motor provides power for the transmission shaft, make the transmission shaft in connecting the axle bed drive the bevel gear coaxial rotation that is in the cylindricality intracavity, thereby it rotates to drive the bevel gear, the reverser rotates coaxially under the rotation of bevel gear, thereby make the lead screw firm rotation on fixed axle bed, compare in traditional planetary reducer or worm reducer, the tooth number is more on the flank of tooth of bevel gear and bevel gear, more meshing rotation stroke has, the bevel gear, the reverser, the lead screw all rotates simultaneously under power drive, meshing between every key tooth on the flank of tooth of bevel gear and bevel gear all makes the lead screw have the translation stroke from top to bottom of a plurality of differences, make the utility model has the advantages of accurate stroke scope, and have the rotation stability, the moment of torsion is big.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

wherein: 1. inputting a motor; 2. connecting the shaft seat; 3. fixing the shaft seat; 4. a screw rod; 5. a protective sleeve; 6. a cylindrical cavity; 7. aligning the shaft hole; 8. a drive shaft; 9. an annular groove; 10. a ball bearing; 11. an annular baffle; 12. a bevel gear; 13. mounting a shaft plate; 14. a spindle hole; 15. a first fitting groove; 16. a limiting shaft sleeve; 17. thickening the wall; 18. installing a shaft seat; 19. an auxiliary shaft hole; 20. a second fitting groove; 21. an inverter; 22. a limit baffle; 23. an annular mounting plate; 24. a bevel gear; 25. the shaft sleeve is rotated.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides the following technical solutions:

a high-precision lead screw spiral bevel gear speed reducer applied to a lifting platform comprises an input motor 1, a connecting shaft seat 2, a fixed shaft seat 3 and a lead screw 4, wherein a protective sleeve 5 is fixedly embedded outside the periphery of an output shaft of the input motor 1, the front end of the protective sleeve 5 is fixedly connected with the connecting shaft seat 2, a cylindrical cavity 6 penetrating through the top and the bottom is formed inside the fixed shaft seat 3, the fixed shaft seat 3 and the connecting shaft seat 2 are vertically arranged, an aligning shaft hole 7 matched with the connecting shaft seat 2 in an opposite position is formed on one side wall of the fixed shaft seat 3, the front side end of the connecting shaft seat 2 is embedded in the aligning shaft hole 7 and fixed on the side wall of the fixed shaft seat 3, a transmission shaft 8 is fixedly connected to the outer side end of the output shaft of the input motor 1, an annular groove 9 is formed on the front end and the rear end of the connecting shaft seat 2, a ball bearing 10 provided with a coaxial lead is embedded in the annular groove 9, and the front side end of the transmission shaft 8, The rear part is respectively embedded into ball bearings 10 arranged in the front and rear annular grooves 9 of the connecting shaft seat 2, the front and rear ends of the circumferential side wall of the transmission shaft 8 are respectively provided with an annular baffle 11, the inner side wall of the annular baffle 11 is abutted against the outer side wall of the ball bearings 10, the front end of the transmission shaft 8 is fixedly connected with a bevel gear 12 rotating by coaxial line, and the bevel gear 12 is positioned in the cylindrical cavity 6; a mounting shaft plate 13 is fixedly connected to the top of the fixed shaft seat 3, a main shaft hole 14 is formed in the middle of the mounting shaft plate 13, a first embedding groove 15 coaxial with the main shaft hole 14 is formed at the periphery of the main shaft hole 14 at the bottom of the mounting shaft plate 13, a ball bearing 10 with a coaxial line is embedded in the first embedding groove 15, a limiting shaft sleeve 16 is rotatably connected to the ball bearing 10 of the first embedding groove 15, a thickened wall 17 with the top end attached to the bottom wall of the ball bearing 10 in the first embedding groove 15 is formed at the lower part of the outer side wall of the limiting shaft sleeve 16, threads are formed on the inner side wall of the limiting shaft sleeve 16, a screw rod 4 which is in matched meshing is embedded in the limiting shaft sleeve 16, a mounting shaft seat 18 is fixedly connected to the bottom of the fixed shaft seat 3, a secondary shaft hole 19 opposite to the main shaft hole 14 is formed at the center of the bottom of the mounting shaft seat 18, a second embedding groove 20 is formed above the secondary shaft hole 19 at the bottom in the mounting shaft seat 18, the ball bearing 10 with a coaxial line is embedded in the second embedding groove 20, the mounting shaft seat 18 is rotatably connected with a reverser 21 matched and meshed with the screw rod 4, the upper part of the reverser 21 is provided with a limit baffle 22, the bottom wall of the limit baffle 22 is propped against the top wall of the ball bearing 10 in the second embedding groove 20, the lower end of the reverser 21 extends to the lower part of the mounting shaft seat 18 through an auxiliary shaft hole 19, the periphery of the top end of the reverser 21 is fixedly connected with an annular mounting plate 23, the top wall of the annular mounting plate 23 is fixedly connected with a bevel gear 24 matched and meshed with the bevel gear 12 with a coaxial line, the lower end of the screw rod 4 extends to the middle part of the bevel gear 24 and the lower part of the reverser 21, and the tooth surface of the bevel gear 24 is meshed and.

Wherein, the middle top wall of the bevel gear 24 is propped against the bottom wall of the limit shaft sleeve 16; the shaft axes of the output shaft of the input motor 1, the protective sleeve 5, the connecting shaft seat 2, the alignment shaft hole 7, the transmission shaft 8, the annular groove 9 and the bevel gear 12 are coincided; the shaft axes of the mounting shaft plate 13, the main shaft hole 14, the limiting shaft sleeve 16, the screw rod 4, the mounting shaft seat 18, the auxiliary shaft hole 19, the second embedding groove 20, the reverser 21 and the bevel gear 24 are coincided; the top end of the screw rod 4 is rotatably connected with a matched rotating shaft sleeve 25.

In practice, the bottom of the lifting platform is fixed on the screw rod 4 by using a rotating shaft sleeve 25 matched with the screw rod 4, the output shaft of the input motor 1 provides power for the transmission shaft 8, so that the transmission shaft 8 in the connecting shaft seat 2 drives the bevel gear 12 in the cylindrical cavity 6 to coaxially rotate, thereby driving bevel gear 24 to rotate, reverser 21 rotates coaxially under the rotation of bevel gear 24, therefore, the screw rod 4 can stably rotate on the fixed shaft seat 3, compared with a traditional planetary reducer or a worm reducer, the number of teeth on the tooth surfaces of the bevel gear 24 and the bevel gear 12 is large, and the tooth surfaces of the bevel gear 24 and the bevel gear 12 have a large meshing rotation stroke, the bevel gear 24, the bevel gear 12, the reverser 21 and the screw rod 4 synchronously rotate under the driving of power, and the meshing between each key tooth on the tooth surfaces of the bevel gear 24 and the bevel gear 12 enables the screw rod 4 to have different vertical up-down translation strokes.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a be applied to lift platform's high accuracy lead screw spiral bevel gear speed reducer, includes input motor (1), connection axle bed (2), fixed axle bed (3), lead screw (4), its characterized in that: the input motor (1) is fixed with a protective sleeve (5) in an embedded manner on the outer side of the periphery of an output shaft, the front end of the protective sleeve (5) is fixedly connected with a connecting shaft seat (2), a cylindrical cavity (6) penetrating through the top and the bottom is formed inside the fixed shaft seat (3), the fixed shaft seat (3) is perpendicular to the connecting shaft seat (2), an alignment shaft hole (7) which is matched with the connecting shaft seat (2) in a relative position is formed on one side wall of the fixed shaft seat (3), the front end of the connecting shaft seat (2) is embedded into the alignment shaft hole (7) and fixed on the side wall of the fixed shaft seat (3), a transmission shaft (8) is fixedly connected to the outer side end of the output shaft of the input motor (1), annular grooves (9) are formed on the front end and the rear end of the connecting shaft seat (2), and ball bearings (10) with coaxial lead wires are embedded into the annular grooves (9), the front and rear parts of the transmission shaft (8) are respectively embedded into ball bearings (10) arranged in annular grooves (9) at the front and rear sides of the connecting shaft seat (2), annular baffles (11) are respectively formed at the front and rear ends of the circumferential side wall of the transmission shaft (8), the inner side wall of each annular baffle (11) is abutted against the outer side wall of each ball bearing (10), a bevel gear (12) rotating along a coaxial line is fixedly connected at the front end of the transmission shaft (8), and the bevel gear (12) is positioned in a cylindrical cavity (6); the top of the fixed shaft seat (3) is fixedly connected with an installation shaft plate (13), a main shaft hole (14) is formed in the middle of the installation shaft plate (13), a first embedding groove (15) coaxial with the main shaft hole (14) is formed in the periphery of the main shaft hole (14) at the bottom of the installation shaft plate (13), a ball bearing (10) with a coaxial line is embedded in the first embedding groove (15), a limiting shaft sleeve (16) is rotatably connected to the ball bearing (10) of the first embedding groove (15), a thickening wall (17) with the top end attached to the bottom wall of the ball bearing (10) in the first embedding groove (15) is formed on the lower portion of the outer side wall of the limiting shaft sleeve (16), threads are formed on the inner side wall of the limiting shaft sleeve (16), a lead screw (4) matched and meshed with each other is embedded in the limiting shaft sleeve (16), and an installation shaft seat (18) is fixedly connected to the bottom of the fixed shaft seat (3), an auxiliary shaft hole (19) opposite to the main shaft hole (14) is formed in the center of the bottom of the installation shaft seat (18), a second embedding groove (20) is formed in the upper portion of the auxiliary shaft hole (19) at the bottom of the installation shaft seat (18), a ball bearing (10) with a coaxial line is embedded into the second embedding groove (20), a reverser (21) meshed with a screw rod (4) in a matched mode is connected in the installation shaft seat (18) in a rotating mode, a limiting baffle (22) is formed on the upper portion of the reverser (21), the bottom wall of the limiting baffle (22) abuts against the top wall of the ball bearing (10) in the second embedding groove (20), the lower end of the reverser (21) extends to the lower portion of the installation shaft seat (18) through the auxiliary shaft hole (19), an annular installation plate (23) is fixedly connected to the periphery of the top end of the reverser (21), and a bevel gear (24) meshed with a bevel gear (12) and with a coaxial line is fixedly connected to the top wall of the annular installation plate (23) ) The lower end of the screw rod (4) extends through the middle part of the bevel gear (24) and the reverser (21) to the lower part of the reverser (21), and the tooth surface of the bevel gear (24) is in meshing key joint with the tooth surface of the bevel gear (12).

2. The high-precision screw rod screw cone gear speed reducer applied to the lifting platform according to claim 1 is characterized in that: the middle top wall of the bevel gear (24) is abutted against the bottom wall of the limiting shaft sleeve (16).

3. The high-precision screw rod screw cone gear speed reducer applied to the lifting platform according to claim 1 is characterized in that: the axial leads of an output shaft of the input motor (1), the protective sleeve (5), the connecting shaft seat (2), the alignment shaft hole (7), the transmission shaft (8), the annular groove (9) and the bevel gear (12) are coincided.

4. The high-precision screw rod screw cone gear speed reducer applied to the lifting platform according to claim 1 is characterized in that: the axis lines of the mounting shaft plate (13), the main shaft hole (14), the limiting shaft sleeve (16), the screw rod (4), the mounting shaft seat (18), the auxiliary shaft hole (19), the second embedding groove (20), the reverser (21) and the bevel gear (24) are overlapped.

5. The high-precision screw rod screw cone gear speed reducer applied to the lifting platform according to claim 1 is characterized in that: the top end of the screw rod (4) is rotatably connected with a rotating shaft sleeve (25) matched with the screw rod.