CN110725920A

CN110725920A - Helical gear

Info

Publication number: CN110725920A
Application number: CN201911000633.1A
Authority: CN
Inventors: 陆海雷
Original assignee: NANTONG WANGXIN NEW MATERIALS CO Ltd
Current assignee: NANTONG WANGXIN NEW MATERIALS CO Ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-01-24
Anticipated expiration: 2039-10-21
Also published as: CN110725920B

Abstract

The invention discloses a helical gear, which relates to the technical field of gear transmission and comprises a gear piece, wherein the gear piece comprises a left gear piece and a gear piece, one side of the left gear piece is provided with a nut, one side of the left gear piece, which is far away from the nut, is provided with a groove, the inside of the groove is fixedly connected with a rubber sleeve, one side of the right gear piece is provided with a stepped hole, and the inside of the stepped hole is movably connected with a bolt. This helical tooth cylindrical gear with anti-backlash device can effectually bury nut and bolt in the inside of gear piece through the nut hole and the shoulder hole of gear piece one side, has improved this kind of anti-backlash helical tooth cylindrical gear's suitability, has reduced the requirement to transmission system, has improved the pleasing to the eye degree of technology of this kind of helical tooth cylindrical gear, and the bolt adopts hexagon socket head cap screw, is convenient for to the regulation in clearance between the gear blade, has guaranteed gear drive's stability.

Description

Helical gear

Technical Field

The invention relates to the technical field of gear transmission, in particular to a helical gear.

Background

The gear is a common part which is frequently used in mechanical transmission, adopts high-quality high-strength alloy steel, is subjected to surface carburizing and hardening treatment, and has strong bearing capacity and durability. In practical application, the helical gear has the characteristics of stable transmission, small impact, vibration and noise and the like, so that the helical gear which is widely used in high-speed heavy-load occasions is the most common type in automobile power transmission gears, generally needs to work under the conditions of high speed and heavy load and requires small vibration and noise. In order to improve the dynamic performance of the gear pair at high speed and reduce vibration and noise, tooth profile modification becomes necessary design and process means that the meshing of the gear and the gear has tooth side clearance, and when the gear transmission pair needs to rotate forwards and backwards, a certain backlash amount is generated, so that the transmission precision is reduced. Therefore, in a device requiring precise transmission, a gear capable of eliminating backlash must be used in order to eliminate backlash. The anti-backlash helical gear is a common gear capable of eliminating backlash.

Although the anti-backlash helical gear disclosed in the chinese patent application publication CN105864397B has the advantages that a large axial force can be borne during transmission, the helical angle can be designed to be large, a meshing tooth side gap cannot be generated again due to the large axial force, and the meshing tooth side gap can be automatically compensated after gear teeth are worn, in the use process, the anti-backlash helical gear also has the disadvantages that a space for accommodating an adjusting nut and an overhanging screw rod must be reserved in the axial direction of the anti-backlash helical gear, so that a transmission system with a compact structure cannot adopt the anti-backlash helical gear, the whole gear is a whole, and the processing difficulty is large.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the helical gear, which solves the problem by splitting the gear into the gear piece and the connecting shaft and arranging the buried hole in the gear piece.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a helical gear, includes the gear piece, the gear piece includes left gear piece and has the gear piece, fixed mounting has been seted up to one side of left side gear piece, one side that left side gear piece kept away from the nut is seted up flutedly, the inside fixedly connected with gum cover of recess, the shoulder hole has been seted up to one side of right side gear piece, the inside swing joint of shoulder hole has the bolt, one side that the shoulder hole was kept away from to right side gear piece is seted up flutedly, the inside fixedly connected with gum cover of recess, the inside fixedly connected with connecting axle of gear piece, the lantern ring has been cup jointed to the connecting axle, a plurality of spring of top fixedly connected with of lantern ring both sides, the one end fixedly connected with that the lantern ring was kept away from to the spring supports the snap.

Optionally, one side of the left gear piece, which is far away from the groove, is provided with four nut holes matched with the nuts, and the nuts are located inside the nut holes.

Optionally, with left gear piece symmetric distribution, the recess has two and symmetric distribution in the surface of left gear piece and right gear piece.

Optionally, the rubber sleeve is a circular ring with the size matched with the groove, and a U-shaped groove is formed in one end, far away from the groove, of the rubber sleeve.

Optionally, the bolt is in threaded connection with the nut through a stepped hole, the bolt is located inside the stepped hole, and the bolt is a hexagon socket head cap screw.

Optionally, the connecting shaft is a stepped shaft, the shaft diameters of the two ends of the connecting shaft are matched with the inner diameter of the gear piece, and the middle shaft diameter of the connecting shaft is matched with the inner diameter of the lantern ring.

Optionally, a plurality of holes matched with the springs are formed in the outer side of the lantern ring, and annular grooves matched with the support clamping rings are formed in the circumferential surfaces of the two ends of the lantern ring.

Optionally, the U-shaped ring groove of support snap ring and gum cover looks adaptation, it has two to support the snap ring, two support the snap ring and distribute in the both sides of the lantern ring.

(III) advantageous effects

The invention provides a helical cylindrical gear, which has the following beneficial effects:

1. this helical gear with anti-backlash device, on the one hand, nut hole and shoulder hole through left gear piece one side can effectually bury nut and bolt in the inside of gear piece, the suitability of this kind of anti-backlash helical gear has been improved, the requirement to transmission system has been reduced, the pleasing to the eye degree of technology of this kind of helical gear has been improved, on the other hand, the bolt adopts hexagon socket head cap bolt, be convenient for to the regulation in clearance between the gear blade, the distance between the gear drive has been reduced, the anti-backlash performance of helical gear has been improved, gear drive's stability has been guaranteed.

2. This helical gear with anti-backlash device, on the one hand, can effectual fixed gear piece through the connecting axle, and the connecting axle can provide the support for the regulation of gear piece, avoided gear piece to produce deformation in accommodation process, influence transmission performance, on the other hand, the gum cover can effectual protection gear piece, reduce the damage of gear piece in accommodation process, and, the gum cover can play the effect of buffering, reduce the axial impact that the gear received at transmission in-process, improve the life of gear, secondly, the degree of difficulty of the installation of anti-backlash structure has been reduced through the structure of gear piece and connecting axle, the efficiency of work has been improved.

Drawings

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

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

FIG. 3 is a schematic view of the internal structure of the present invention;

fig. 4 is a schematic view of the gear structure of the present invention.

In the figure: 1-gear piece, 101-left gear piece, 102-right gear piece, 2-nut, 3-groove, 4-rubber sleeve, 5-step hole, 6-bolt, 7-connecting shaft, 8-lantern ring, 9-spring and 10-supporting snap ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, the present invention provides a technical solution: a helical gear comprises gear pieces, wherein each gear piece comprises a left gear piece and a gear piece, one side of each left gear piece is provided with a fixed nut, one side, far away from the nut, of each left gear piece is provided with a groove, the inside of each groove is fixedly connected with a rubber sleeve, one side of each right gear piece is provided with a stepped hole, the inside of each stepped hole is movably connected with a bolt, one side, far away from the stepped hole, of each right gear piece is provided with a groove, the inside of each groove is fixedly connected with a rubber sleeve, the inside of each gear piece is fixedly provided with a connecting shaft, the connecting shaft is sleeved with a lantern ring, the top ends of the two sides of the lantern ring are fixedly connected with a plurality of springs, one end, far away from the lantern ring, of each spring is fixedly connected with a supporting snap ring, one side, far away from the groove, of each left gear piece is provided with a nut, the two grooves are symmetrically distributed on the surfaces of the left gear piece and the right gear piece, the rubber sleeve is a circular ring with the size matched with the groove, a U-shaped groove is arranged at one end of the rubber sleeve far away from the groove, the bolt is in threaded connection with the nut through the stepped hole, the bolt is positioned inside the stepped hole and adopts a hexagon socket head cap screw, the connecting shaft is a stepped shaft, the shaft diameters of two ends of the connecting shaft are matched with the inner diameter of the gear piece, the middle shaft diameter of the connecting shaft is matched with the inner diameter of the lantern ring, a plurality of holes matched with the springs are arranged on the outer side of the lantern ring, the annular of snap ring looks adaptation is seted up and is supported on the circumferential surface at the both ends of the lantern ring, the U-shaped ring groove looks adaptation of support snap ring and gum cover, it has two, two to support the snap ring and distribute in the both sides of the lantern ring.

When in use, the left gear piece 101 and the right gear piece 102 are sleeved and are in interference fit with the connecting shaft 7, the nut hole and the stepped hole 5 on one side of the left gear piece 101 can effectively bury the nut 2 and the bolt 6 inside the gear piece 1, so that the situation that a gear transmission system must reserve enough space for the bolt 6 and the nut 2 to cause that some transmission systems with compact structures cannot be used is avoided, the applicability of the anti-backlash helical gear is improved, the requirement on the transmission system is reduced, the process attractiveness of the helical gear is improved, the bolt 6 adopts the hexagon socket head cap bolt, the bolt 6 can be directly adjusted through the hexagon socket head cap wrench, the distance between the left gear piece and the right gear piece is further adjusted, the adjustment of the gap between the gear blades 1 is convenient, the distance between the gear transmissions is reduced, the anti-backlash performance of the helical gear is improved, the stability 7 of the gear transmissions can be effectively fixed on the gear piece 1, and connecting axle 7 can provide the support for the regulation of gear piece 1, avoided gear piece 1 to produce deformation in accommodation process, influence transmission performance, gum cover 4 can effectual protection gear piece 1, reduce the damage of gear piece 1 in accommodation process, and, gum cover 4 can play the effect of buffering, reduce the axial impact that the gear received in transmission process, improve the life of gear, secondly, the degree of difficulty of the installation of anti-backlash structure has been reduced through the structure of gear piece 1 and connecting axle 7, the efficiency of work has been improved.

In conclusion, when the helical gear with the anti-backlash device is used, a user can effectively bury the nut 2 and the bolt 6 in the gear piece 1 through the nut hole and the stepped hole on one side of the left gear piece 101, the applicability of the anti-backlash helical gear is improved, the requirement on a transmission system is reduced, the process attractiveness of the helical gear is improved, the bolt 6 adopts the hexagon socket head cap bolt, the adjustment of the gap between the gear blades 1 is facilitated, the distance between gear transmissions is reduced, the anti-backlash performance of the helical gear is improved, the stability of the gear transmissions is ensured, on one hand, the gear piece 1 can be effectively fixed through the connecting shaft 7, the connecting shaft 7 can provide support for the adjustment of the gear piece 1, and the gear piece 1 is prevented from being deformed in the adjusting process, influence transmission performance, on the other hand gum cover 4 can effectual protection gear piece 1, reduces the damage of gear piece 1 in the accommodation process, and in addition, gum cover 4 can play the effect of buffering, reduces the axial impact that the gear received at the transmission in-process, improves the life of gear, secondly, has reduced the degree of difficulty of the installation of anti-backlash structure through the structure of gear piece 1 and connecting axle 7, has improved the efficiency of work.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a helical gear, includes gear piece (1), its characterized in that: the gear piece (1) comprises a left gear piece (101) and a gear piece (102), a nut (2) is fixedly arranged on one side of the left gear piece (101), a groove (3) is formed in one side, away from the nut (2), of the left gear piece (101), a rubber sleeve (4) is fixedly connected to the inside of the groove (3), a stepped hole (5) is formed in one side of the right gear piece (102), a bolt (6) is movably connected to the inside of the stepped hole (5), a groove (3) is formed in one side, away from the stepped hole (5), of the right gear piece (102), the rubber sleeve (4) is fixedly connected to the inside of the groove (3), a connecting shaft (7) is fixedly arranged in the gear piece (1), a sleeve ring (8) is sleeved on the connecting shaft (7), and a plurality of springs (9) are fixedly connected to the top ends of the two sides of the sleeve ring (8), one end of the spring (9) far away from the lantern ring (8) is fixedly connected with a supporting snap ring (10).

2. The helical gear according to claim 1, wherein a nut hole matched with the nut (2) is formed in one side of the left gear piece (101) far away from the groove (3).

3. A helical gear as claimed in claim 2, wherein there are four of said nuts (2), said nuts (2) being located inside the nut bores.

4. Helical gear according to claim 1, characterised in that said left and said right gear plates (101) are symmetrically arranged.

5. A helical gear according to claim 4, wherein the grooves (3) have two and are symmetrically distributed on the surface of the left gear plate (101) and the right gear plate (102).

6. The helical gear according to claim 1, wherein the bolt (6) is connected with the nut (2) through a stepped hole (5) in a threaded manner, the bolt (6) is positioned inside the stepped hole (5), and the bolt (6) is a hexagon socket head cap screw.

7. The helical cylindrical gear according to claim 1, wherein the connecting shaft (7) is a stepped shaft, the shaft diameters of two ends of the connecting shaft (7) are matched with the inner diameter of the gear piece (1), and the middle shaft diameter of the connecting shaft (7) is matched with the inner diameter of the sleeve ring (8).

8. The helical gear according to claim 1, wherein the outer side of the sleeve ring (8) is provided with a plurality of holes matched with the springs (9), and the circumferential surfaces of the two ends of the sleeve ring (8) are provided with ring grooves matched with the support snap rings (10).