CN210859195U

CN210859195U - Oil-free male and female screw

Info

Publication number: CN210859195U
Application number: CN201921642508.6U
Authority: CN
Inventors: 胡锐
Original assignee: Ningbo Xinwei Fluid Technology Co ltd
Current assignee: Ningbo Xinwei Fluid Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-26
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses an there is not oily negative and positive screw rod belongs to no oily screw rod technical field, and all parts overlap in proper order on the screw rod, and the gear that utilizes the screw rod tip compresses tightly lid and nut and fixes all parts to utilize the interval between the fixed cloudy of a pair of meshed synchronizing gear, the positive screw rod, simple to operate, the precision is high moreover.

Description

Oil-free male and female screw

Technical Field

The utility model relates to an there is not oily screw rod technical field, in particular to there is not oily negative and positive screw rod.

Background

Oil-free male and female screws are installed in the oil-free dry screw compressor and the screw fan, the oil-free male and female screws generally comprise male screws and female screws matched with the male screws, the fixation of the male and female screws completely depends on the limiting structure inside the machine at present, the installation of the male and female screws is very troublesome, and the installation precision of the oil-free male and female screws is not high due to errors in the production process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an oil-free cloudy screw rod, it is fixed with the interval between cloudy screw rod and the positive screw rod to utilize a pair of synchronizing gear, and the part is fixed through the nut of cloudy screw rod one side, and the installation is simple, and the installation accuracy is high.

In order to achieve the above object, the utility model provides a following technical scheme: an oil-free yin-yang screw comprises a yin screw 6 and a yang screw 5, and is characterized in that floating seal assemblies 7, shaft sleeves 7-1, oil slingers 8, bearing assemblies and bearing pressing covers 11 are mounted on the yin screw 6 and the yang screw 5, the floating seal assemblies 7 are mounted on the shaft sleeves 7-1, the oil slingers 8 are mounted on one sides of the floating seal assemblies 7, bearing assemblies are mounted on one sides of the oil slingers 8 and comprise first bearings 9 and second bearings 10, the bearing pressing covers 11 are arranged on one sides of the bearing assemblies, a second gear 4 is mounted on one side of the bearing pressing covers 11 in the yin screw 6, a gear pressing cover 2 is mounted on one side of the second gear 4, a first gear 3 is mounted on one side of the bearing pressing covers 11 in the yang screw 5, and a driving wheel 12 is arranged on one side of the first gear 3, the nut 1 is installed on one side of the driving wheel 12, and the first gear 3 and the second gear 4 are meshed with each other.

Preferably, the drive wheel 12 is connected to an electric motor.

Preferably, the first gear 3 and the second gear 4 are a pair of synchronous gears.

Compared with the prior art, the beneficial effects of the utility model are that: all parts are sleeved on the screw rod in sequence, the gear pressing cover and the nut at the end part of the screw rod are utilized to fix all parts, the space between the male screw rod and the female screw rod is fixed by utilizing a pair of meshed synchronous gears, the installation is convenient, the precision is high, and meanwhile, the problem of part processing precision can be solved by selecting oil slingers with different thicknesses, so that the working precision of the oil-free male screw rod and the oil-free female screw rod is further improved.

Drawings

Fig. 1 is a side view of the present invention;

FIG. 2 is a cross-sectional view taken at A in FIG. 1;

fig. 3 is a top view of the present invention.

In the figure: 1. a nut; 2. a gear pressing cover; 3. a first gear; 4. a second gear; 5. a male screw; 6. a female screw; 7. a floating seal assembly; 7-1, shaft sleeve; 8. an oil slinger; 9. a first bearing; 10. a second bearing; 11. a bearing hold down cap; 12. a driving wheel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example (b): as shown in the figure, the oil-free male-female screw comprises a female screw 6 and a male screw 5, and is characterized in that floating seal assemblies 7, shaft sleeves 7-1, oil slingers 8, bearing assemblies and bearing pressing covers 11 are mounted on the female screw 6 and the male screw 5, the floating seal assemblies 7 are mounted on the shaft sleeves 7-1, the oil slingers 8 are mounted on one sides of the floating seal assemblies 7, the bearing assemblies are mounted on one sides of the oil slingers 8 and comprise first bearings 9 and second bearings 10, the bearing pressing covers 11 are arranged on one sides of the bearing assemblies, a second gear 4 is mounted on one side of the bearing pressing covers 11 in the female screw 6, a gear pressing cover 2 is mounted on one side of the second gear 4, a first gear 3 is mounted on one side of the bearing pressing covers 11 in the male screw 5, a driving wheel 12 is arranged on one side of the first gear 3, the nut 1 is installed to action wheel 12 one side, first gear 3 and second gear 4 intermeshing, first gear 3 and second gear 4 are a pair of synchromesh gear, and action wheel 12 links to each other with the motor.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An oil-free male and female screw rod comprises a female screw rod (6) and a male screw rod (5), and is characterized in that floating seal assemblies (7), a shaft sleeve (7-1), an oil slinger (8), a bearing assembly and a bearing pressing cover (11) are installed on the female screw rod (6) and the male screw rod (5), the floating seal assemblies (7) are installed on the shaft sleeve (7-1), the oil slinger (8) is installed on one side of the floating seal assemblies (7), the bearing assembly is installed on one side of the oil slinger (8), the bearing assembly comprises a first bearing (9) and a second bearing (10), the bearing pressing cover (11) is arranged on one side of the bearing pressing cover (11) in the female screw rod (6), a second gear (4) is installed on one side of the bearing pressing cover (11), and a gear pressing cover (2) is installed on one side of the second gear (, first gear (3) are installed to one side that the bearing compressed tightly lid (11) in positive (5) screw rod, first gear (3) one side is provided with action wheel (12), nut (1) are installed to action wheel (12) one side, first gear (3) and second gear (4) intermeshing.

2. An oil-free male-female screw according to claim 1, characterized in that: the driving wheel (12) is connected with the motor.

3. An oil-free male-female screw according to claim 1, characterized in that: the first gear (3) and the second gear (4) are a pair of synchronous gears.