CN114110112A

CN114110112A - Combined screw rod nut

Info

Publication number: CN114110112A
Application number: CN202111346846.7A
Authority: CN
Inventors: 翁海龙; 汤超雄; 叶卢炼; 郭杰; 姚仁刚
Original assignee: Zhejiang Jiankang Transmission Technology Co ltd
Current assignee: Zhejiang Jiankang Transmission Technology Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-03-01

Abstract

The invention discloses a combined screw rod nut which comprises a screw rod and a nut, wherein the nut is installed on the outer wall of the screw rod, and a sealing device is installed on the outer wall of the nut. This combination formula screw-nut, through the second leakproofness, first disc, mutually support between screw and the first sealing washer isotructure, can install first disc and second disc at the both ends of nut, and install first sealing washer and second sealing washer in first disc and the second disc respectively, thereby through first sealing washer and the cooperation of second sealing washer alright improve the leakproofness of this device, through the second diaphragm, the arc piece, L shape baffle, the second threaded rod, mutually support between second handle and the riser isotructure, L shape baffle can be rotated, make L shape baffle enter into the recess of second disc, rotate the second handle again, make the second handle drive the second threaded rod rotate, support L shape baffle tightly through the second threaded rod, thereby made things convenient for and installed and make up this device.

Description

Combined screw rod nut

Technical Field

The invention relates to the technical field of feed screw nuts, in particular to a combined feed screw nut.

Background

The screw nut is also a ball screw, which is an ideal product for converting rotary motion into linear motion or converting linear motion into rotary motion, and is also the most commonly used transmission element on tool machinery and precision machinery, the main function of the screw nut is to convert rotary motion into linear motion or convert torque into axial repeated acting force, and the screw nut has the characteristics of high precision, reversibility and high efficiency, but the screw nut in the prior art has poor sealing performance, so that the dustproof effect is reduced, and meanwhile, the screw nut in the prior art is inconvenient to assemble and install.

Disclosure of Invention

The invention aims to provide a combined feed screw nut to solve the problem that the feed screw nut in the prior art proposed in the background art is poor in sealing performance, so that the dustproof effect is reduced.

In order to achieve the purpose, the invention provides the following technical scheme: a combined screw nut comprises a screw and a nut, wherein the nut is arranged on the outer wall of the screw and is in threaded connection with the screw, and a sealing device is arranged on the outer wall of the nut;

the sealing device comprises a retainer, a ball, a nut outer ring, a first disc, a screw and a first sealing ring;

control the inner wall of keeping the ware links to each other with the inside of nut is fixed, the spout department of keeping the ware installs a plurality of balls, and the outer wall of ball and the spout department inner wall clearance fit of keeping the ware, the outer wall of keeping the ware is equipped with the nut outer lane, the spout department inner wall of nut outer lane and the outer wall clearance fit of ball, first disc is installed on the right side of nut outer lane, and just first disc links to each other with nut outer lane screw thread through a plurality of bolts, the inside processing of first disc has the circular recess, first sealing washer is installed to the circular recess department of first disc, and the outer wall of first sealing washer and through-hole department inner wall respectively with the circular recess inner wall of first disc and the outer wall clearance fit of nut.

Preferably, the second disc is installed to the left side outer wall of nut outer lane, and the inside processing of second disc has a circular recess, the circular recess department of second disc installs the second sealing washer, and the outer wall of second sealing washer and through-hole department inner wall respectively with the circular recess department inner wall of second disc and the outer wall clearance fit of lead screw, can improve the leakproofness of this device through second sealing washer and first sealing washer like this.

Preferably, the midpoint of the first disk and the midpoint of the outer ring of the nut are on the same horizontal line.

Preferably, the outer wall of the left side of the outer ring of the nut is provided with a connecting device;

the connecting device comprises an arc-shaped plate, a hook, a rectangular buckle, a first threaded rod, a first handle and a first transverse plate;

from top to bottom the inner wall of arc and the outer wall of nut outer lane closely laminate, the top the equal rigid coupling of front and back end outer wall of arc has the couple, the outer wall of couple closely laminates and has the rectangle to detain, the below that the rectangle was detained is rotated and is connected with first threaded rod, the lower surface integrated into one piece of first threaded rod is provided with the first in command, the top of the first in command is equipped with first diaphragm, and the below outer wall of the middle inside and first threaded rod of first diaphragm rotates and links to each other.

Preferably, the top outer wall threaded connection of first threaded rod has the rectangle frame, the processing of the left and right sides inner wall of rectangle frame has the spout, and the spout department inner wall of rectangle frame and the outer wall clearance fit of first diaphragm, rotate through the pivot in the middle of the below of rectangle frame and be connected with the rectangular block, around the outer wall of rectangular block links to each other with the arc of below is fixed, can drive the rectangle of top through the rectangle frame etc. like this and detain the removal.

Preferably, the first transverse plate and the rectangular frame form a sliding structure, so that the first transverse plate and the rectangular frame can be matched to enable the first threaded rod to move more stably.

Preferably, a fixing device is installed on the left side of the arc-shaped plate;

the fixing device comprises a second transverse plate, an arc-shaped block, an L-shaped baffle, a second threaded rod, a second handle and a vertical plate;

from top to bottom the right side of second diaphragm links to each other with the arc is fixed, the rigid coupling has the arc piece in the middle of the inboard of second diaphragm, the rear end face of arc piece rotates through the pivot and is connected with L shape baffle, and the one end outer wall of L shape baffle and the groove inner wall clearance fit of second disc, the left side of L shape baffle closely laminates there is the second threaded rod, and the left side outer wall rigid coupling of second threaded rod has the second handle, the right side of second handle is equipped with the riser, and the one end outer wall of riser links to each other with the second diaphragm is fixed, the inside of riser links to each other with the outer wall screw thread of second threaded rod.

Preferably, the vertical plate and the second transverse plate are vertically arranged.

Compared with the prior art, the invention has the beneficial effects that: according to the combined screw nut, the first disc and the second disc can be arranged at two ends of the nut through the mutual matching of the second sealing performance, the first disc, the screw, the first sealing ring and the like, and the first sealing ring and the second sealing ring are respectively arranged in the first disc and the second disc, so that the sealing performance of the device can be improved through the matching of the first sealing ring and the second sealing ring;

through the mutual matching among the structures such as the nut, the retainer, the ball and the nut outer ring, the ball can be limited through the matching of the retainer and the nut outer ring, so that the nut can move more easily through the ball, the screw rod and the like;

the rectangular buckle can be arranged on the hook through the mutual matching of the structures such as the arc-shaped plates, the hook, the rectangular buckle, the first threaded rod, the first handle and the first transverse plate, the first handle drives the first threaded rod to rotate, the first threaded rod drives the rectangular buckle to move through the rectangular frame, and therefore the two arc-shaped plates can be fixed on the nut outer ring;

through mutually supporting between structures such as second diaphragm, arc piece, L shape baffle, second threaded rod, second handle and riser, can rotate L shape baffle, make L shape baffle enter into the recess of second disc, rotate the second handle again, make the second handle drive the second threaded rod and rotate, support L shape baffle tightly through the second threaded rod to made things convenient for and installed and make up this device.

Drawings

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

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural diagram of the screw, the first seal ring and the ball shown in FIG. 2; (ii) a

FIG. 4 is a schematic view of the hook, rectangular clasp and retainer of FIG. 2;

FIG. 5 is a schematic view of the first handle, the first threaded rod and the rectangular frame of FIG. 2

Fig. 6 is a schematic structural diagram of the L-shaped baffle, the second sealing ring and the second disk in fig. 2.

In the figure: 1. the screw rod, 2, the nut, 3, the sealing device, 301, the retainer, 302, the ball, 303, the nut outer ring, 304, the first disc, 305, the screw, 306, the first sealing ring, 4, the connecting device, 401, the arc-shaped plate, 402, the hook, 403, the rectangular buckle, 404, the first threaded rod, 405, the first handle, 406, the first transverse plate, 5, the fixing device, 501, the second transverse plate, 502, the arc-shaped block, 503, the L-shaped baffle, 504, the second threaded rod, 505, the second handle, 506, the vertical plate, 6, the second disc, 7, the second sealing ring, 8, the rectangular frame, 9, the rectangular block.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a combined screw nut comprises a screw rod 1 and a nut 2, wherein the nut 2 is installed on the outer wall of the screw rod 1, the nut 2 is in threaded connection with the screw rod 1, the threads of the screw rod 1 and spiral grooves in the nut 2 are combined to form a spiral raceway, a sealing device 3 is installed on the outer wall of the nut 2, the sealing device 3 comprises a retainer 301, balls 302, a nut outer ring 303, a first disc 304, a screw 305 and a first sealing ring 306, the inner walls of a left retainer 301 and a right retainer 301 are fixedly connected with the inside of the nut 2, a plurality of balls 302 are installed at a chute of the retainer 301, the outer walls of the balls 302 are in clearance fit with the inner wall of the chute of the retainer 301, the balls 302 can be limited by the retainer 301, the nut outer ring 303 is arranged on the outer wall of the

retainer

301, 2 chutes are machined in the inside of the nut outer ring 303, and the inner wall of the chute of the nut outer ring 303 is in clearance fit with the outer wall of the balls 302, the right side of the nut outer ring 303 is provided with a first disc 304, the first disc 304 is in threaded connection with the nut outer ring 303 through 4 bolts 305, a circular groove is processed inside the first disc 304, a first sealing ring 306 is installed at the circular groove of the first disc 304, the outer wall and the inner wall of the through hole of the first sealing ring 306 are in clearance fit with the inner wall of the circular groove of the first disc 304 and the outer wall of the nut 2 respectively, the sealing performance of the nut 2 can be improved through the first sealing ring 306, the left outer wall of the nut outer ring 303 is provided with a second disc 6, the inner wall of the second disc 6 is processed with a circular groove, the left side of the second disc 6 is processed with 2 grooves, the circular groove of the second disc 6 is provided with a second sealing ring 7, the outer wall and the inner wall of the through hole of the second sealing ring 7 are in clearance fit with the inner wall of the circular groove of the second disc 6 and the outer wall of the screw rod 1 respectively, the sealing performance of the second disc 6 can be improved through the second sealing ring 7, the midpoint of the first disk 304 is on the same horizontal line as the midpoint of the nut outer race 303.

The connecting device 4 is installed on the outer wall of the left side of the nut outer ring 303, the connecting device 4 comprises an arc-shaped plate 401, a hook 402, a rectangular buckle 403, a first threaded rod 404, a first handle 405 and a first transverse plate 406, the inner walls of the upper arc-shaped plate 401 and the lower arc-shaped plate 401 are tightly attached to the outer wall of the nut outer ring 303, the hooks 402 are fixedly connected to the outer walls of the front end and the rear end of the upper arc-shaped plate 401, the rectangular buckle 403 is tightly attached to the outer wall of the hook 402, the rectangular buckle 403 can be installed on the hook 402, the first threaded rod 404 is rotatably connected to the lower portion of the rectangular buckle 403, the first handle 405 is integrally formed on the lower surface of the first threaded rod 404, the first threaded rod 404 can be driven to rotate by the first handle 405, the first transverse plate 406 is arranged above the first handle 405, the inner portion of the middle of the first transverse plate 406 is rotatably connected to the outer wall of the lower portion of the first threaded rod 404, and can support the first threaded rod 404 by the first transverse plate 406, the top outer wall threaded connection of first threaded rod 404 has rectangular frame 8, the processing of the left and right sides inner wall of rectangular frame 8 has the spout, and the outer wall clearance fit of the spout department inner wall of rectangular frame 8 and first diaphragm 406, first diaphragm 406 can remove in the spout department of rectangular frame 8, it is connected with rectangular block 9 to rotate through the pivot in the middle of the below of rectangular frame 8, can play limiting displacement to rectangular frame 8 through rectangular block 9, the outer wall of rectangular block 9 links to each other with arc 401 of below is fixed around, sliding structure is constituteed with rectangular frame 8 to first diaphragm 406.

The left side of the arc-shaped plate 401 is provided with a fixing device 5, the fixing device 5 comprises a second transverse plate 501, arc-shaped blocks 502, an L-shaped baffle 503, a second threaded rod 504, a second handle 505 and a vertical plate 506, the right sides of the upper and lower second transverse plates 501 are fixedly connected with the arc-shaped plate 401, the arc-shaped blocks 502 are fixedly connected with the middle of the inner side of the second transverse plate 501, the rear end surface of the arc-shaped blocks 502 is rotatably connected with the L-shaped baffle 503 through a rotating shaft, the outer wall of one end of the L-shaped baffle 503 is in clearance fit with the inner wall of the groove of the second disk 6, the L-shaped baffle 503 can be tightly abutted through the groove of the second disk 6, the left side of the L-shaped baffle 503 is tightly abutted with the second threaded rod 504 through the second threaded rod 504, the outer wall of the left side of the second threaded rod 504 is fixedly connected with the second handle 505, the right side of the second handle 505 is provided with the vertical plate 506, and the outer wall of one end of the vertical plate 506 is fixedly connected with the second transverse plate 501, the inside of riser 506 links to each other with the outer wall screw thread of second threaded rod 504, and second threaded rod 504 can remove through riser 506, and riser 506 is the perpendicular setting with second diaphragm 501.

In this embodiment, when an operator needs to use the combined screw nut, firstly, the operator installs the nut 2 on the screw rod 1, the screw thread of the screw rod 1 and the spiral groove inside the nut 2 are combined to form a spiral raceway, the two ends of the spiral groove of the nut 2 are provided with the retainers 301, the ball 302 can be prevented from rolling out of the nut 2 by the retainers 301, and the ball 302 can also return, the first disc 304 and the second disc 6 are installed on the outer ring 303 of the nut, the first disc 304 can be fixed by the screw 305, the first sealing ring 306 and the second sealing ring 7 are respectively installed inside the first disc 304 and the second disc 6, so that the sealing performance of the device can be improved by the first sealing ring 306 and the second sealing ring 7, the arc plate 401 drives the second transverse plate 501 to move, and the arc plate 401 is installed on the outer ring 303 of the nut, the rectangular frame 8 is rotated to install the rectangular buckle 403 on the hook 402, then the first handle 405 is rotated to make the first handle 405 drive the first threaded rod 404 to rotate, the first threaded rod 404 can move downwards through the rectangular frame 8, so that the first threaded rod 404 drives the rectangular buckle 403 to move, therefore, the upper arc-shaped plate 401 and the lower arc-shaped plate 401 can be fixed on the outer ring 303 of the nut through the rectangular buckle 403 and the hook 402, then the L-shaped baffle 503 is rotated to enable the L-shaped baffle 503 to enter the groove of the second disc 6, then the second handle 505 is rotated to enable the second handle 505 to drive the second threaded rod 504 to rotate, the second threaded rod 504 can move to the right side through the vertical plate 506, and therefore the L-shaped baffle 503 is tightly pressed by the second threaded rod 504, the second disc 6 can be fixed on the nut outer ring 303 through the L-shaped baffle 503, so that the assembly and installation work of the feed screw nut is completed.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

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 combined type feed screw nut, includes lead screw (1) and nut (2), nut (2) are installed to the outer wall of lead screw (1), and nut (2) and lead screw (1) screw thread link to each other its characterized in that: the outer wall of the nut (2) is provided with a sealing device (3);

the sealing device (3) comprises a retainer (301), a ball (302), a nut outer ring (303), a first disc (304), a screw (305) and a first sealing ring (306);

the inner walls of the left retainer (301) and the right retainer (301) are fixedly connected with the inner part of the nut (2), a plurality of balls (302) are arranged at the sliding groove of the retainer (301), and the outer wall of the ball (302) is in clearance fit with the inner wall of the retainer (301) at the sliding chute, the outer wall of the retainer (301) is provided with a nut outer ring (303), the inner wall of the sliding groove of the nut outer ring (303) is in clearance fit with the outer wall of the ball (302), the right side of the nut outer ring (303) is provided with a first disc (304), and the first disc (304) is in threaded connection with the nut outer ring (303) through a plurality of bolts (305), a circular groove is processed inside the first disc (304), a first sealing ring (306) is arranged at the circular groove of the first disc (304), and the outer wall of the first sealing ring (306) and the inner wall of the through hole are in clearance fit with the inner wall of the circular groove of the first disc (304) and the outer wall of the nut (2) respectively.

2. The modular lead screw nut of claim 1, wherein: second disc (6) are installed to the left side outer wall of nut outer lane (303), and the inside processing of second disc (6) has the circular recess, second sealing washer (7) are installed to the circular recess department of second disc (6), and the outer wall of second sealing washer (7) and through-hole department inner wall respectively with the circular recess department inner wall of second disc (6) and the outer wall clearance fit of lead screw (1).

3. The modular lead screw nut of claim 1, wherein: the middle point of the first disc (304) and the middle point of the nut outer ring (303) are on the same horizontal line.

4. The modular lead screw nut of claim 1, wherein: the outer wall of the left side of the nut outer ring (303) is provided with a connecting device (4);

the connecting device (4) comprises an arc-shaped plate (401), a hook (402), a rectangular buckle (403), a first threaded rod (404), a first handle (405) and a first transverse plate (406);

from top to bottom the inner wall of arc (401) closely laminates with the outer wall of nut outer lane (303), the top the equal rigid coupling of front and back end outer wall of arc (401) has couple (402), the outer wall of couple (402) closely laminates and has the rectangle to detain (403), the below that the rectangle was detained (403) is rotated and is connected with first threaded rod (404), the lower surface integrated into one piece of first threaded rod (404) is provided with the first in command (405), the top of the first in command (405) is equipped with first diaphragm (406), and the inside below outer wall with first threaded rod (404) of centre of first diaphragm (406) rotates continuously.

5. The modular lead screw nut of claim 4, wherein: the top outer wall threaded connection of first threaded rod (404) has rectangle frame (8), the processing of the left and right sides inner wall of rectangle frame (8) has the spout, and the spout department inner wall of rectangle frame (8) and the outer wall clearance fit of first diaphragm (406), rotate through the pivot in the middle of the below of rectangle frame (8) and be connected with rectangular block (9), the front and back the outer wall of rectangular block (9) links to each other with arc (401) of below are fixed.

6. The modular lead screw nut of claim 4, wherein: the first transverse plate (406) and the rectangular frame (8) form a sliding structure.

7. The modular lead screw nut of claim 4, wherein: a fixing device (5) is arranged on the left side of the arc-shaped plate (401);

the fixing device (5) comprises a second transverse plate (501), an arc-shaped block (502), an L-shaped baffle (503), a second threaded rod (504), a second handle (505) and a vertical plate (506);

from top to bottom the right side of second diaphragm (501) is fixed continuous with arc (401), the rigid coupling has arc piece (502) in the middle of the inboard of second diaphragm (501), the rear end face of arc piece (502) rotates through the pivot and is connected with L shape baffle (503), and the recess inner wall clearance fit of the one end outer wall of L shape baffle (503) and second disc (6), the left side of L shape baffle (503) closely laminates second threaded rod (504), and the left side outer wall rigid coupling of second threaded rod (504) has second handle (505), the right side of second handle (505) is equipped with riser (506), and the one end outer wall of riser (506) links to each other with second diaphragm (501) is fixed, the inside of riser (506) links to each other with the outer wall screw thread of second threaded rod (504).

8. The modular lead screw nut of claim 7, wherein: the vertical plate (506) and the second transverse plate (501) are arranged vertically.