CN209925543U

CN209925543U - Lead screw transmission structure convenient for adding lubricant

Info

Publication number: CN209925543U
Application number: CN201920639976.1U
Authority: CN
Inventors: 方军锋; 汤伟千
Original assignee: Shanghai Tai Wu Technology Co Ltd
Current assignee: Shanghai Tai Wu Technology Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-01-10
Anticipated expiration: 2029-05-07

Abstract

The utility model provides a lead screw drive structure convenient to add emollient, the utility model relates to a lead screw drive technical field, the lead screw drive structure convenient to add emollient includes: the screw shaft is provided with at least ten circles of circular grooves which are horizontally arranged at equal intervals, a circle of ball is connected in each of the two circular grooves in a rolling mode and is positioned in the circular groove in the middle of the outer side of the screw shaft, a nut is sleeved outside the screw shaft, a circular sleeve ring and a circular shaft which are sleeved outside the screw shaft are arranged on the left side of the nut, the circular shaft is connected and communicated with the left side of the circular sleeve ring, a through hole is formed in the center of the upper surface of the nut, the tail end of the through hole is provided with a transverse groove which is communicated with the through hole and horizontally penetrates through the inner side of the circular sleeve ring and the upper side of the inner wall of the circular shaft, an oil conveying pipe is inserted into the through hole and the transverse groove, and oil conveying ports which are communicated with the; the beneficial effects of the utility model reside in that: the lubricating oil is convenient to add/the wear resistance of the sealing ring is improved.

Description

Lead screw transmission structure convenient for adding lubricant

Technical Field

The utility model belongs to the technical field of the screw drive technique and specifically relates to a lead screw drive structure convenient to add emollient is related to.

Background

The length-diameter ratio of the length L to the diameter d of the transmission screw part is large, and the transmission screw part is generally a slender shaft with twenty to thirty degrees. The rigidity is relatively poor, the structural shape is complicated, the screw of drive screw is mostly trapezoidal screw and have very high quality requirement, long-term operation's screw axle needs keep lubricated through regularly adding lubricating oil, and conventional screw axle drive structure when adding lubricating oil, not only appears lubricating oil easily and is difficult to the inside of flowing into drive structure to lead to drive structure's lubricity to reduce, again, sealing washer wherein not only wear resistance is poor, and life shortens moreover.

SUMMERY OF THE UTILITY MODEL

The utility model discloses adopt following technical scheme to realize according to above-mentioned problem: a lead screw drive structure for facilitating the addition of a lubricant, the lead screw drive structure for facilitating the addition of a lubricant comprising:

the screw shaft is provided with at least ten circles of circular grooves which are horizontally arranged at equal intervals, a circle of ball is connected in each of the two circular grooves in a rolling mode, the ball is located in the circular groove in the middle of the outer side of the screw shaft, a nut is sleeved outside the screw shaft, a circular sleeve ring and a circular shaft which are sleeved outside the screw shaft are arranged on the left side of the nut, the circular shaft is connected and communicated with the left side of the circular sleeve ring, a through hole is formed in the center of the upper surface of the nut, the tail end of the through hole is provided with a transverse groove which is communicated with the through hole and horizontally penetrates through the inner side of the circular sleeve ring and the upper side of the inner wall of the circular shaft, an oil conveying pipe is inserted into the through hole and the transverse groove, oil conveying ports which are communicated with the inner wall of the circular shaft are formed in the middle of the lower surface of the oil conveying;

the labyrinth seal ring comprises two sealing strips, outer circular rings and rubber rings, the two sealing strips are clamped into the upper side and the lower side of the inner wall of the labyrinth seal ring respectively, the two outer circular rings are sleeved into the upper side and the lower side of the outer wall of the labyrinth seal ring respectively, the two rubber rings are clamped into the two outer circular rings and are arranged around the axis of the outer wall of the labyrinth seal ring, and three jacks are formed in the central positions of the front side and the rear side of the upper surface of the labyrinth seal ring.

Preferably, both ends are equipped with left riser and right riser respectively about the screw shaft outside, and the round hole that the diameter is greater than screw shaft diameter is all seted up at left riser and right riser outer wall center, both ends pass two round holes respectively and make left riser and right riser all cup joint with the screw shaft about the screw shaft.

Preferably, the inner wall of the round shaft is provided with two circles of semicircular grooves, the round beads are clamped into the semicircular grooves respectively and are in rolling connection with the semicircular grooves, and the oil delivery ports are aligned to the two circles of round beads.

Preferably, the diameter of the labyrinth seal ring is smaller than that of the circular sleeve ring and is clamped into the inner wall of the circular sleeve ring, and the rubber ring and the outer wall of the outer circular ring are both attached to the inner wall of the circular sleeve ring.

Preferably, one end of the circular shaft, which is connected with the circular sleeve ring, is inserted into the inner wall of the labyrinth seal ring and is attached to the surface of the seal strip.

The utility model provides a lead screw drive structure convenient to add emollient has following beneficial effect:

when lubricating oil is added, the lubricating oil is dripped into the oil delivery pipe in the through hole, the dripped lubricating oil enters the transverse groove along with the axis of the oil delivery pipe and flows out through the two oil delivery ports on the bottom surface of the oil delivery pipe, and the lubricating oil directly drips on the surface of the ball because the two oil delivery ports are aligned to the two circles of balls, so that the lubricating oil can be accurately dripped, the waste is avoided, and the use effect of adding the lubricating oil can be greatly improved;

utilize outer ring and rubber circle can avoid labyrinth sealing circle and circle lantern ring inner wall direct contact and produce wearing and tearing, so not only can effectively reduce labyrinth sealing circle's wearing and tearing degree to be favorable to prolonging its life, recycle the sealing strip of labyrinth sealing circle inner wall and can avoid circle axle and circle lantern ring direct contact, also can increase leakproofness between the two simultaneously.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the cross-sectional structure of the nut of the present invention;

fig. 3 is a schematic structural view of the labyrinth seal ring of the present invention.

The labels in the figure are: 1-a left vertical plate; 101-a right vertical plate; 102-a circular hole; 2-a screw shaft; 201-circular groove; 202-round beads; 3-a nut; 301-a through hole; 302-a piston; 303-a circular collar; 304-a circular shaft; 305-a transverse slot; 306-an oil delivery pipe; 307-oil conveying port; 308-a semicircular groove; 4-labyrinth seal ring; 401-a jack; 402-a sealing strip; 403-outer circular ring; 404-rubber ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-3, a screw driving structure for facilitating lubricant addition includes:

the screw shaft 2, the outside of the screw shaft 2 is equipped with at least ten circles of circular grooves 201 which are horizontally arranged at equal intervals, and two of the circular grooves 201 are connected with a circle of ball 202 in a rolling way, and the ball 202 is positioned in the circular groove 201 at the middle of the outside of the screw shaft 2, the outside of the screw shaft 2 is sleeved with a nut 3, and the left side of the nut 3 is equipped with a circular sleeve ring 303 and a circular shaft 304 which are sleeved on the outside of the screw shaft 2, and the circular shaft 304 is connected and communicated with the left side of the circular sleeve ring 303, the center of the upper surface of the nut 3 is equipped with a through hole 301, the tail end of the through hole 301 is equipped with a transverse groove 305 which is communicated with the through hole and horizontally penetrates through the inner side of the circular sleeve ring 303 and the upper part of the inner wall of the circular shaft 304, an oil pipeline 306 is inserted into the through hole 301 and the transverse groove 305, and the middle of the lower surface and the left side of the oil pipeline 306 are equipped with an oil, the two circles of balls 202 are respectively clamped into the two circles of semi-circular grooves 308 and are in rolling connection with the two circles of semi-circular grooves, the two oil delivery ports 307 are aligned with the two circles of balls 202, a user sleeves the nut 3 on the outer side of the screw shaft 2 and aligns the two circles of semi-circular grooves 308 on the inner wall of the circular shaft 304 with the two circles of balls 202 in the circular groove 201 respectively, so that the balls 202 are clamped into the semi-circular grooves 308 and are in rolling connection with each other, then, after the user uses the screw shaft 2 for a long time and needs to add lubricating oil, the piston 302 above the through hole 301 can be pulled out first, then, the lubricating oil can be dripped into the oil delivery pipe 306 in the through hole 301, the dripped lubricating oil enters the transverse groove 305 along with the axis of the oil delivery pipe 306 and flows out through the two oil delivery ports 307 on the bottom surface of the oil delivery pipe 306, because the two oil delivery ports 307 are aligned with the two circles of balls 202, the lubricating oil will directly, not only is no waste generated, but also the use effect of adding lubricating oil can be greatly improved;

in the embodiment of the present invention, the labyrinth seal 4 includes a sealing strip 402, an outer ring 403 and a rubber ring 404, the sealing strip 402 is provided with two strips which are respectively clamped into the upper and lower sides of the inner wall of the labyrinth seal 4, the outer ring 403 is provided with two strips which are respectively sleeved into the upper and lower sides of the outer wall of the labyrinth seal 4, the rubber ring 404 is clamped between the two outer rings 403 and arranged around the axis of the outer wall of the labyrinth seal 4, and the central positions of the front and rear sides of the upper surface of the labyrinth seal 4 are respectively provided with three insertion holes 401, the diameter of the labyrinth seal 4 is smaller than the diameter of the ring 303 and is clamped into the inner wall of the ring 303, and the outer walls of the rubber ring 404 and the outer ring 403 are both attached to the inner wall of the ring 303, the end of the circular shaft 304 connected to the circular ring 303 is inserted into the inner wall of the labyrinth seal 4 and attached to the surface, the outer ring 403 and the rubber ring 404 can prevent the labyrinth seal ring 4 from being worn due to direct contact with the inner wall of the circular sleeve 303, so that the abrasion degree of the labyrinth seal ring 4 can be effectively reduced, the service life of the labyrinth seal ring can be prolonged, the sealing strip 402 on the inner wall of the labyrinth seal ring 4 can prevent the circular shaft 304 from being in direct contact with the circular sleeve 303, and meanwhile, the sealing performance between the circular shaft and the circular sleeve 303 can be improved.

In this embodiment, both ends are equipped with left riser 1 and right riser 101 respectively about screw shaft 2 outside, and the round hole 102 that the diameter is greater than screw shaft 2 diameter is all seted up at left riser 1 and right riser 101 outer wall center, both ends pass two round holes 102 respectively and make left riser 1 and right riser 101 all cup joint with screw shaft 2 about screw shaft 2, can play the effect of supporting screw shaft 2 through left riser 1 and right riser 101, and round hole 102 is passed at screw shaft 2 both ends, can avoid the phenomenon that screw shaft 2 drops from two risers to take place.

It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a lead screw drive structure convenient to add emollient which characterized in that, lead screw drive structure convenient to add emollient includes:

the screw rod comprises a screw rod shaft (2), wherein at least ten circles of circular grooves (201) which are horizontally arranged at equal intervals are formed in the outer side of the screw rod shaft (2), a circle of round beads (202) are connected in each of the two circular grooves (201) in a rolling mode, the round beads (202) are located in the circular grooves (201) in the middle of the outer side of the screw rod shaft (2), a nut (3) is sleeved on the outer portion of the screw rod shaft (2), a round sleeve ring (303) and a round shaft (304) which are sleeved on the outer side of the screw rod shaft (2) are arranged on the left side of the nut (3), the round shaft (304) is connected and communicated with the left side of the round sleeve ring (303), a through hole (301) is formed in the center of the upper surface of the nut (3), a transverse groove (305) which is communicated with the through the tail end of the through hole (301) and horizontally penetrates through the inner side of the round sleeve ring (303) and the inner wall of the round shaft (304, oil delivery ports (307) communicated with the inner wall of the circular shaft (304) are formed in the middle of the lower surface and on the left side of the lower surface of the oil delivery pipe (306), and pistons (302) for sealing the through holes (301) are embedded above the through holes;

labyrinth seal circle (4), labyrinth seal circle (4) include sealing strip (402), outer ring (403) and rubber circle (404), just sealing strip (402) are equipped with two and go into lower side on labyrinth seal circle (4) inner wall respectively, outer ring (403) are equipped with two and embolia lower side on labyrinth seal circle (4) outer wall respectively, rubber circle (404) card is gone into two arrange around labyrinth seal circle (4) outer wall axis between outer ring (403), just three jack (401) have all been seted up to side central point position around labyrinth seal circle (4) upper surface.

2. A screw drive structure facilitating the addition of lubricant according to claim 1, wherein: both ends are equipped with left riser (1) and right riser (101) respectively about screw shaft (2) outside, and left riser (1) and right riser (101) outer wall center all set up diameter and are greater than round hole (102) of screw shaft (2) diameter, both ends pass two round holes (102) respectively and make left riser (1) and right riser (101) all cup joint with screw shaft (2) about screw shaft (2).

3. A screw drive structure facilitating the addition of lubricant according to claim 1, wherein: two circles of semicircular grooves (308) are formed in the inner wall of the round shaft (304), the round beads (202) are clamped into the semicircular grooves (308) respectively and are in rolling connection with the semicircular grooves, and the oil conveying ports (307) are aligned to the two circles of the round beads (202).

4. A screw drive structure facilitating the addition of lubricant according to claim 1, wherein: labyrinth seal circle (4) diameter is less than the ring (303) diameter and blocks into ring (303) inner wall, just rubber circle (404) and outer ring (403) outer wall all with the laminating of ring (303) inner wall.

5. A screw drive structure facilitating the addition of lubricant according to claim 4, wherein: one end of the round shaft (304) connected with the round sleeve ring (303) is inserted into the inner wall of the labyrinth seal ring (4) and is attached to the surface of the sealing strip (402).