CN210915225U

CN210915225U - Precise anti-backlash spiral elevator

Info

Publication number: CN210915225U
Application number: CN201921765925.XU
Authority: CN
Inventors: 刘超
Original assignee: Shandong Niman Transmission Machinery Co ltd
Current assignee: Shandong Niman Transmission Machinery Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-07-03
Anticipated expiration: 2029-10-21

Abstract

The utility model relates to the technical field of elevators, and a accurate anti-backlash spiral elevator is disclosed, including first protective housing, the worm has been cup jointed in the inside activity of first protective housing, and one side threaded connection of worm has the worm wheel, and the inside threaded connection of worm has the lead screw, and the both ends fixedly connected with bearing of worm wheel, the top surface fixedly connected with second protective housing of first protective housing, the top surface fixedly connected with third protective housing of second protective housing, the groove of stepping down has been seted up to one side of third protective housing, and the regulating part has been cup jointed in the inside activity in the groove of stepping down. The utility model discloses an engagement motion between worm and the worm wheel for the adjusting nut at lead screw top can rotate, utilizes the regulating part to drive the upper cover and moves in the vertical direction in one side of third protective housing, and then makes upper cover one side fixed connection's connecting piece carry out the fine motion at sliding guide, thereby realizes the fine setting to lead screw and worm wheel concentricity, makes the screw elevator transmission more stable.

Description

Precise anti-backlash spiral elevator

Technical Field

The utility model relates to the technical field of elevators, specifically be an accurate anti-backlash screw elevator.

Background

The common domestic spiral elevator is generally a worm gear elevator, generally comprises parts such as a worm gear, a box body, a bearing, a lead screw and the like, and has the working principle that a motor or a manual drive worm rotates, the worm drives the worm gear to rotate in a speed reducing mode, an inner cavity of the worm gear is processed into internal threads, the lead screw is driven to move up and down, and the effect of amplifying thrust is achieved due to the effect of an internal worm gear and the speed reducing effect of the lead screw.

But the concentricity of the screw rod and the worm wheel of the existing spiral lifter is troublesome to adjust, the transmission stability of the spiral lifter cannot be well guaranteed, and after the screw rod and the worm wheel are used in a friction way to generate a gap, the precision of the spiral lifter is reduced, and the service life is greatly reduced.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model provides an accurate anti-backlash spiral lift possesses the advantage of adjusting the concentricity, eliminating the clearance, has solved the problem mentioned among the above-mentioned background art.

The utility model provides a following technical scheme: a precise reverse-backlash spiral elevator comprises a first protective shell, wherein a worm is movably sleeved in the first protective shell, one side of the worm is in threaded connection with a worm wheel, the inner part of the worm is in threaded connection with a screw rod, two ends of the worm wheel are fixedly connected with bearings, the top surface of the first protective shell is fixedly connected with a second protective shell, the top surface of the second protective shell is fixedly connected with a third protective shell, one side of the third protective shell is provided with a yielding groove, the interior of the yielding groove is movably sleeved with an adjusting piece, one side of the adjusting piece is fixedly connected with an adjusting nut which is connected with the top of the screw rod in a threaded manner, one end of the adjusting piece is fixedly connected with an upper cover which is fixedly connected with one side of the connecting piece, one side joint of connecting piece is in sliding guide's the outside, sliding guide fixed connection is in top one side of third protective housing.

Carefully selecting, the both ends of worm respectively are connected with a bearing, and the inside of bearing has seted up the mounting groove.

And carefully selecting, wherein two ends of the adjusting nut are fixedly connected with two adjusting pieces, and the height value of each adjusting piece is the same as that of the upper cover.

Carefully selecting, the length value of the sliding guide rail is larger than that of the connecting piece, and the length value of the connecting piece is larger than that of the upper cover.

Carefully selecting, two yielding grooves are formed in one side of the third protective shell, and the width value of the yielding groove is larger than the thickness value of the adjusting piece.

Carefully, the bottom of the second protective housing is in threaded connection with the top of the first protective housing through a first screw, and the top of the second protective housing is in threaded connection with the bottom of the third protective housing through a second screw.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model discloses an engagement motion between worm and the worm wheel for the adjusting nut at lead screw top can rotate, utilizes the regulating part to drive the upper cover and moves in the vertical direction in one side of third protective housing, and then makes upper cover one side fixed connection's connecting piece carry out the fine motion at sliding guide, thereby realizes the fine setting to lead screw and worm wheel concentricity, makes the screw elevator transmission more stable.

2. The utility model discloses a clearance after adjusting nut rubs screw and worm wheel is adjusted, eliminates the clearance between screw and the worm wheel, resumes the use precision of lead screw, prolongs the life of lead screw to this accurate anti-backlash screw lift's practicality has been improved.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a rear view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the worm wheel of the present invention;

FIG. 4 is a schematic view of the structural worm of the present invention in front view;

fig. 5 is a schematic top view of the structure adjusting nut of the present invention.

In the figure: 1. a first protective case; 2. a worm; 3. a worm gear; 4. a second protective shell; 5. a third protective shell; 6. a yielding groove; 7. a sliding guide rail; 8. a connecting member; 9. an upper cover; 10. an adjustment member; 11. adjusting the nut; 12. a bearing; 13. and a screw rod.

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. 1-5, a precise inverse tooth gap spiral elevator comprises a first protective shell 1, a worm 2 is movably sleeved inside the first protective shell 1, a worm wheel 3 is connected to one side of the worm 2 through a thread, a lead screw 13 is connected to the inside of the worm 2 through a thread, bearings 12 are fixedly connected to two ends of the worm wheel 3, a second protective shell 4 is fixedly connected to the top surface of the first protective shell 1, a third protective shell 5 is fixedly connected to the top surface of the second protective shell 4, a abdicating groove 6 is formed in one side of the third protective shell 5, an adjusting piece 10 is movably sleeved inside the abdicating groove 6, an adjusting nut 11 is fixedly connected to one side of the adjusting piece 10, the adjusting nut 11 is connected to the top of the lead screw 13 through a thread, an upper cover 9 is fixedly connected to one end of the adjusting piece 10, the upper cover 9 is fixedly connected to one side of a connecting piece 8, one, the sliding guide 7 is fixedly connected to one side of the top of the third protective shell 5.

Wherein, the both ends of worm 2 respectively are connected with a bearing 12, and the mounting groove has been seted up to the inside of bearing 12, and the mounting groove of bearing 12 can facilitate for the power supply of the follow-up connection motor class of device, perfects the motion structure of device, improves the rationality of device.

Wherein, two regulating parts 10 of adjusting nut 11's both ends fixedly connected with, and the altitude value of regulating part 10 is the same with the 9 altitude values of upper cover, utilizes adjusting nut 11 to drive regulating part 10 and upper cover 9 and moves in the vertical direction in one side of third protective housing 5, and then makes 9 one side fixedly connected's of upper cover connecting piece 8 carry out the fine motion at sliding guide 7 to the realization is to the fine setting of screw and worm wheel concentricity, makes spiral elevator transmission more stable.

The length value of the sliding guide rail 7 is larger than that of the connecting piece 8, the length value of the connecting piece 8 is larger than that of the upper cover 9, the movement stroke of the device concentricity adjusting structure is limited, the connection relation between the devices is perfected, and certain parts of the structure are prevented from being mutually collided.

Wherein, two groove 6 of stepping down have been seted up to one side of third protective housing 5, and step down the thickness value that groove 6 width value is greater than regulating part 10, and groove 6 of stepping down provides the motion space for the concentricity is adjusted the structure and is eliminated clearance structure, guarantees that the device function can realize smoothly, improves the practicality of device.

Wherein, the bottom of second protective housing 4 and the top of first protective housing 1 pass through first screw threaded connection, and the top of second protective housing 4 and the bottom of third protective housing 5 pass through second screw threaded connection, pass through screwed connection between the protective housing, and usable threaded connection is firm, detachable characteristics, facilitates for the inside maintenance of later stage device.

The working principle is as follows: during the use, when the concentricity of lead screw and worm wheel needs to be adjusted, connect the one end of bearing 12 in one side of motor, utilize the meshing transmission between worm 2 and the worm wheel 3, make lead screw 13 rotatory, utilize adjusting nut 11 to drive regulating part 10 and upper cover 9, and then make the connecting piece 8 with upper cover 9 one side fixed connection do the fine setting motion on sliding guide 7, thereby realize the fine setting of the concentricity of lead screw 13 and worm wheel 3, when lead screw 13 and worm wheel 3 friction produced the clearance, same step, utilize adjusting nut 11 to eliminate the clearance between lead screw 13 and the worm wheel 3.

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. Simultaneously in the utility model discloses an in the drawing, fill the pattern and just do not do any other injecions for distinguishing the picture layer.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a precision anti-backlash screw elevator, includes first protective housing (1), its characterized in that: the worm (2) is sleeved in the first protective shell (1) in the inner movable mode, a worm wheel (3) is connected to one side of the worm (2) in a threaded mode, a lead screw (13) is connected to the inner threads of the worm (2), bearings (12) are fixedly connected to two ends of the worm wheel (3), a second protective shell (4) is fixedly connected to the top surface of the first protective shell (1), a third protective shell (5) is fixedly connected to the top surface of the second protective shell (4), a abdicating groove (6) is formed in one side of the third protective shell (5), an adjusting piece (10) is sleeved in the abdicating groove (6) in the inner movable mode, an adjusting nut (11) is fixedly connected to one side of the adjusting piece (10), the adjusting nut (11) is in a threaded mode and connected to the top of the lead screw (13), an upper cover (9) is fixedly connected to one end of the adjusting piece (10), and the upper cover (9) is, one side joint of connecting piece (8) is in the outside of sliding guide (7), sliding guide (7) fixed connection is in top one side of third protective housing (5).

2. A precision anti-backlash screw elevator as claimed in claim 1, wherein: two ends of the worm (2) are respectively connected with a bearing (12), and a mounting groove is formed in the bearing (12).

3. A precision anti-backlash screw elevator as claimed in claim 1, wherein: two ends of the adjusting nut (11) are fixedly connected with two adjusting pieces (10), and the height value of each adjusting piece (10) is the same as that of the upper cover (9).

4. A precision anti-backlash screw elevator as claimed in claim 1, wherein: the length value of the sliding guide rail (7) is larger than that of the connecting piece (8), and the length value of the connecting piece (8) is larger than that of the upper cover (9).

5. A precision anti-backlash screw elevator as claimed in claim 1, wherein: two abdicating grooves (6) are formed in one side of the third protective shell (5), and the width value of each abdicating groove (6) is larger than the thickness value of each adjusting piece (10).

6. A precision anti-backlash screw elevator as claimed in claim 1, wherein: the bottom of the second protective shell (4) is in threaded connection with the top of the first protective shell (1) through a first screw, and the top of the second protective shell (4) is in threaded connection with the bottom of the third protective shell (5) through a second screw.