CN218934892U

CN218934892U - Improved tooth sleeve structure for spiral swing oil cylinder

Info

Publication number: CN218934892U
Application number: CN202223117501.7U
Authority: CN
Inventors: 岳勇杰; 张文君; 钱雪锋
Original assignee: Shanghai Dunke Machinery Co ltd
Current assignee: Shanghai Dunke Machinery Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-28
Anticipated expiration: 2032-11-23

Abstract

The utility model provides a modified tooth cover structure for spiral swing hydro-cylinder, including the cylinder body of a spiral swing hydro-cylinder, be provided with an output shaft in the cylinder body, the cover is equipped with a piston on the output shaft, the one end cover of piston is equipped with a tooth cover, the one end of cylinder body is provided with a back lid, the output shaft, the piston, the tooth cover, the back lid is coaxial, the inboard of back lid inwards forms a go-between along the circumferencial direction arch, the go-between stretches into in the cylinder body, the inboard of tooth cover meshes with the one end of piston, be provided with first terminal surface tooth along the circumferencial direction on the outer terminal surface of tooth cover, be provided with the second terminal surface tooth along the circumferencial direction on the interior terminal surface of go-between, first terminal surface tooth and second terminal surface tooth intermesh. Compared with the prior art, the utility model has positive and obvious effects. 1. The end face teeth have high strength and large bearing capacity, and overload slip is not worried about. 2. The device is particularly suitable for severe vibration working conditions, and even if the rear cover bolt is slightly loosened, the end face teeth are still meshed and cannot slip.

Description

Improved tooth sleeve structure for spiral swing oil cylinder

Technical Field

The utility model relates to the field of machinery, in particular to a spiral swing oil cylinder, and especially relates to an improved tooth sleeve structure for the spiral swing oil cylinder.

Background

The spiral swing cylinder has wide application. In the prior art, there are two ways to adjust the phase of the output shaft of the helical oscillating cylinder. One way adopts taper sleeve matching (as shown in figure 1), namely, a section of conical surface is turned on the tooth sleeve and the rear cover respectively, sufficient fixed friction force is obtained by expanding the conical surface, when the phase of the output shaft is regulated, the phase of the output shaft can be rotated to a required position after the rear cover is loosened, the tooth sleeve moves axially along with the generation of axial movement, then the rear cover is compressed again, and the tooth sleeve is fixed at the regulated position. Another way is to enlarge the step surface of the tooth sleeve (as shown in fig. 2), press the step surface with the rear cover to obtain enough fixed friction, when the phase of the output shaft is adjusted, the phase of the output shaft can be rotated to a required position after the rear cover is loosened, the tooth sleeve moves axially along with the axial movement, and then press the rear cover again to fix the tooth sleeve at the adjusted position. However, the two modes have the defects that 1, the taper sleeve is easy to deform when being pressed, the taper sleeve is difficult to separate after being meshed, and the fixed friction force is insufficient to resist heavy load. 2. The step surface of the fixed gear sleeve needs to be made large enough to obtain enough fixed friction force, so that the outer diameter of the rear cover is overlarge, and once the rear cover bolt is slightly loosened by vibration, the fixed friction force of the gear sleeve is greatly reduced.

Disclosure of Invention

The utility model aims to provide an improved tooth sleeve structure for a spiral swinging oil cylinder, which aims to solve the technical problem that the tooth sleeve fixing mode in the spiral swinging oil cylinder is not ideal in the prior art.

The utility model discloses an improved tooth sleeve structure for a spiral swing oil cylinder, which comprises a cylinder body of the spiral swing oil cylinder, wherein an output shaft is arranged in the cylinder body, a piston is sleeved on the output shaft, one end of the piston is sleeved with a tooth sleeve, one end of the cylinder body is provided with a rear cover, the output shaft, the piston, the tooth sleeve and the rear cover are coaxial, the inner side end surface of the rear cover protrudes axially to form a coaxial connecting ring, the connecting ring stretches into the cylinder body, the inner side of the tooth sleeve is meshed with one end of the piston, a first end surface tooth is arranged on the outer end surface of the tooth sleeve along the circumferential direction, a second end surface tooth is arranged on the inner end surface of the connecting ring along the circumferential direction, and the first end surface tooth and the second end surface tooth are meshed with each other.

Further, a first inner side tooth is arranged on the inner side wall of the tooth sleeve, a first outer side tooth is arranged on the outer side wall of the piston, and the first inner side tooth and the first outer side tooth are meshed with each other.

Further, a second inner side tooth is arranged on the inner side wall of the piston, a second outer side tooth is arranged on the outer side wall of the output shaft, and the second inner side tooth and the second outer side tooth are meshed with each other.

Further, the rear cover is fixedly connected with the cylinder body through a plurality of screws.

Working principle: the end face teeth are arranged between the tooth sleeve and the rear cover, the tooth sleeve is meshed with the rear cover through the end face teeth, the strength of the end face teeth is high enough, and zero position adjustment is convenient.

Compared with the prior art, the utility model has positive and obvious effects. 1. The end face teeth have high strength and large bearing capacity, and overload slip is not worried about. 2. The device is particularly suitable for severe vibration working conditions, and even if the rear cover bolt is slightly loosened, the end face teeth are still meshed and cannot slip.

Drawings

Fig. 1 is a schematic diagram of a prior art cone sleeve mating structure.

Fig. 2 is a schematic view of a step surface structure of an enlarged gear sleeve in the prior art.

Fig. 3 is a schematic structural view of an improved tooth cover structure for a spiral swing cylinder according to the present utility model.

Detailed Description

Example 1

As shown in fig. 3, the solution provided by the present utility model,

the utility model provides an improved tooth cover structure for spiral swing hydro-cylinder, including the cylinder body 1 of a spiral swing hydro-cylinder, be provided with an output shaft 2 in the cylinder body 1, the cover is equipped with a piston 3 on the output shaft 2, the one end cover of piston 3 is equipped with a tooth cover 4, the one end of cylinder body 1 is provided with a back lid 5, output shaft 2, piston 3, tooth cover 4, back lid 5 is coaxial, the inboard terminal surface of back lid 5 forms a coaxial go-between 51 along the axial arch, go-between 51 stretches into in the cylinder body 1, the inboard of tooth cover 4 meshes with the one end of piston 3, be provided with first terminal surface tooth 6 along the circumferencial direction on the outer terminal surface of tooth cover 4, be provided with second terminal surface tooth 7 along the circumferencial direction on the interior terminal surface of go-between 51, first terminal surface tooth 6 and second terminal surface tooth 7 intermesh.

Further, a first inner tooth 8 is arranged on the inner side wall of the tooth sleeve 4, a first outer tooth 9 is arranged on the outer side wall of the piston 3, and the first inner tooth 8 and the first outer tooth 9 are meshed with each other.

Further, a second inner side tooth 10 is provided on the inner side wall of the piston 3, a second outer side tooth 11 is provided on the outer side wall of the output shaft 2, and the second inner side tooth 10 and the second outer side tooth 11 are meshed with each other.

Further, the rear cover 6 is fixedly connected with the cylinder 1 through a plurality of screws 12.

The working procedure of this embodiment is:

the piston 3 moves back and forth along the axial direction under the action of hydraulic thrust, and drives the output shaft 2 to rotate and swing clockwise and anticlockwise. The inner end surfaces of the tooth sleeve 4 and the connecting ring 51 are meshed by milling end surface teeth, if the initial phase of the output shaft 2 needs to be adjusted, the piston 3 is operated to the left end point, the rear cover 5 is loosened, then the output shaft 2 is rotated clockwise from the shaft end to a required position (the screw teeth between the output shaft 2 and the tooth sleeve 4 are right-handed, the counterclockwise rotation can cause piston back-channeling), the tooth sleeve 4 moves axially, then the inner end surface of the connecting ring 51 is meshed with the outer end surface of the tooth sleeve 4, finally the bolt 12 is screwed down, and the tooth sleeve 4 is fixed at the adjusted position through the rear cover 5.

The tooth angle of the end face is generally divided into 60 degrees and 45 degrees, the tooth depth of 60 degrees is moderate, the processing is simple and convenient, and the milling can be performed by using a common triangular thread blade; the 45 ° profile is deeper and has a deeper engagement length.

In this embodiment, 60 ° tooth-shaped end face teeth are selected, the circumferences of the inner ring and the outer ring of the end face teeth are different, but the number of teeth is the same, so that the outer tooth pitch is large, the inner tooth pitch is small, in order to ensure that the tooth top widths are the same, the end face turning has a corresponding taper, and the situation that the first end face teeth 6 and the second end face teeth 7 cannot be meshed to the root along the outer tooth depth due to the fact that the inner tooth teeth are too sharp is avoided.

Claims

1. The utility model provides a modified tooth cover structure for spiral swing hydro-cylinder, includes cylinder body (1) of a spiral swing hydro-cylinder, cylinder body (1) in be provided with one output shaft (2), output shaft (2) on the cover be equipped with one piston (3), one end cover of piston (3) be equipped with one tooth cover (4), one end of cylinder body (1) be provided with one back lid (5), output shaft (2) piston (3) tooth cover (4) back lid (5) coaxial, its characterized in that: the inner side end face of the rear cover (5) protrudes along the axial direction to form a coaxial connecting ring (51), the connecting ring (51) stretches into the cylinder body (1), the inner side of the tooth sleeve (4) is meshed with one end of the piston (3), first end face teeth (6) are arranged on the outer end face of the tooth sleeve (4) along the circumferential direction, second end face teeth (7) are arranged on the inner end face of the connecting ring (51) along the circumferential direction, and the first end face teeth (6) are meshed with the second end face teeth (7).

2. The improved tooth cover structure for a helical oscillating cylinder according to claim 1, wherein: the inner side wall of the tooth sleeve (4) is provided with a first inner side tooth (8), the outer side wall of the piston (3) is provided with a first outer side tooth (9), and the first inner side tooth (8) and the first outer side tooth (9) are meshed with each other.

3. The improved tooth cover structure for a helical oscillating cylinder according to claim 1, wherein: the piston (3) is provided with second inner side teeth (10) on the inner side wall, the outer side wall of the output shaft (2) is provided with second outer side teeth (11), and the second inner side teeth (10) are meshed with the second outer side teeth (11).

4. The improved tooth cover structure for a helical oscillating cylinder according to claim 1, wherein: the rear cover (5) is fixedly connected with the cylinder body (1) through a plurality of screws (12).