CN221237126U

CN221237126U - Screw clearance eliminating device

Info

Publication number: CN221237126U
Application number: CN202323128932.8U
Authority: CN
Inventors: 孙小龙; 赵豪
Original assignee: Chongqing Juji Electromechanical Equipment Co ltd
Current assignee: Chongqing Juji Electromechanical Equipment Co ltd
Priority date: 2023-11-20
Filing date: 2023-11-20
Publication date: 2024-06-28
Anticipated expiration: 2033-11-20

Abstract

The utility model discloses a screw gap eliminating device, which belongs to the technical field of screw nuts and comprises a screw body, wherein nuts are connected to the outer surface of the screw body in a threaded manner, connecting pipes are fixedly connected to the left side surface and the right side surface of each nut, a supporting plate is fixedly connected to the upper surface of each connecting pipe, a sliding groove is formed in one side surface of each supporting plate, which is close to each other, the side plates can move up and down through the sliding grooves and sliding blocks, a control plate can push the side plates to move through the sliding blocks by utilizing the matching of threaded ejector rods and threaded holes, the side plates can push the gap ejector rods to be in contact with threads of the screw body, and thrust is applied to the screw body, so that the gap between the screw and the threaded connection position of the screw is reduced, the accuracy of the screw body and the screw is ensured, and the problem that when two nuts are adopted, the threads of a second nut and the screw still wear the screw, so that the gap is not completely eliminated is solved.

Description

Screw clearance eliminating device

Technical Field

The utility model relates to the field of screw nuts, in particular to a screw clearance eliminating device.

Background

The screw-nut mechanism is a device for converting rotary motion into linear motion, and the working principle is that when the screw rod rotates relative to the nut, the screw rod and the nut generate relative displacement in the axial direction, and the screw-nut mechanism is widely applied to various industrial equipment and precise instruments due to the advantages of stable transmission, high precision, high transmission efficiency and the like, and the screw rod and the nut can be worn due to long-time operation, so that a gap elimination device is needed to ensure the rotation precision of the screw rod and the nut.

The utility model discloses a screw-nut mechanism with a gap adjusting device, which solves the problem of inconvenient gap adjustment of the screw-nut mechanism and is characterized in that the Chinese patent with the publication number of CN 206830751U: the mounting seat is also provided with a second nut matched with the screw rod, the distance between the first nut and the second nut is adjustable, and the first nut, the second nut and the screw rod form a transmission thread pair. When a gap is generated between the screw rod and the nut, the gap between the screw rod and the nut is eliminated by adjusting the gap between the second nut and the first nut, so that the use precision of the screw rod and the nut is ensured.

Although the above patent can eliminate the gap between the screw rod and the nut during use, there still exist some disadvantages in the use process, for example, the gap is eliminated by adjusting the second nut during use, but since the second nut and the screw rod are also threaded, the second nut will also wear with the screw rod, so that the elimination of the gap is not thorough, and therefore, a person skilled in the art provides a screw rod gap elimination device to solve the problems set forth in the above background art.

Disclosure of utility model

The present utility model is directed to a screw clearance eliminating device, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

Screw clearance eliminating device, including the screw rod body, the surface threaded connection of screw rod body has the nut, the equal fixedly connected with connecting pipe of left and right sides face of nut, every the equal fixedly connected with backup pad of upper surface of connecting pipe, two the spout has all been seted up to a side that the backup pad is close to each other, every the equal sliding connection of inner wall of spout has the slider, two the common fixedly connected with control panel of a side that the slider is close to each other, two the equal fixedly connected with curb plate of a side that the slider is kept away from each other, every the equal fixedly connected with clearance ejector pin in bottom of curb plate, every the bottom of clearance ejector pin all with screw rod body threaded connection, two the common fixedly connected with diaphragm of upper surface of backup pad, the screw hole is seted up to the upper surface of diaphragm, the inner wall threaded connection of screw hole has the screw ejector pin.

As still further aspects of the utility model: the screw thread ejector rod is characterized in that a rotating plate is arranged above the screw thread ejector rod, and the bottom surface of the rotating plate is fixedly connected with the top end of the screw thread ejector rod.

As still further aspects of the utility model: two reinforcing blocks are fixedly connected to the outer surface of each connecting pipe, and one side surface, close to each other, of each reinforcing block is fixedly connected with the front surfaces of the two supporting plates and the back surfaces of the two supporting plates respectively.

As still further aspects of the utility model: the top of control panel is equipped with wear-resisting piece, the upper surface of wear-resisting piece contacts with the bottom of screw thread ejector pin.

As still further aspects of the utility model: the upper surface of the control panel is fixedly connected with two tension springs, and the upper surface of each tension spring is fixedly connected with the bottom surface of the transverse plate.

As still further aspects of the utility model: two limiting blocks are arranged below the control board, and the bottom surfaces of the two limiting blocks are fixedly connected with the upper surfaces of the two connecting pipes respectively.

As still further aspects of the utility model: two locating plates are fixedly connected to the bottom surface of each side plate, and one side surface, close to each other, of each locating plate is fixedly connected with the front surfaces of the two gap ejector rods and the back surfaces of the two gap ejector rods respectively.

Compared with the prior art, the utility model has the beneficial effects that:

This lead screw clearance remove device can make the curb plate reciprocate through being equipped with spout and slider to utilize the cooperation of screw thread ejector pin and screw hole, can make the control panel promote the curb plate through the slider and remove, and then make the curb plate can promote the screw thread of clearance ejector pin and lead screw body and contact, and exert thrust to the lead screw body, make the screw and the threaded connection department clearance of nut reduce, thereby ensure the accuracy when lead screw body and nut join in marriage, when having solved two nuts, the screw thread of second nut and lead screw still can appear nut and lead screw wearing and tearing, so that the incomplete problem of clearance's elimination.

Drawings

FIG. 1 is a schematic perspective view of a screw gap eliminating device;

FIG. 2 is a schematic perspective view of a side view of a lead screw gap elimination device;

FIG. 3 is a schematic perspective view of a top view of a lead screw gap elimination device;

fig. 4 is a schematic perspective view of a screw gap eliminating device in a plan view.

In the figure: 1. a screw rod body; 2. a reinforcing block; 3. a nut; 4. a connecting pipe; 5. a wear block; 6. a gap ejector rod; 7. a positioning plate; 8. a side plate; 9. a slide block; 10. a support plate; 11. a cross plate; 12. a threaded ejector rod; 13. a rotating plate; 14. a threaded hole; 15. a tension spring; 16. a control board; 17. a chute; 18. and a limiting block.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Referring to fig. 1 to 4, in the embodiment of the utility model, the screw gap eliminating device comprises a screw body 1, wherein a nut 3 is in threaded connection with the outer surface of the screw body 1, connecting pipes 4 are fixedly connected with the left side surface and the right side surface of the nut 3, supporting plates 10 are fixedly connected with the upper surface of each connecting pipe 4, sliding grooves 17 are formed in one side surface of each two supporting plates 10, sliding blocks 9 are slidably connected with the inner wall of each sliding groove 17, a control plate 16 is fixedly connected with one side surface of each two sliding blocks 9, a side surface of each two sliding blocks 9, which is far away from each other, is fixedly connected with a side plate 8, a gap ejector rod 6 is fixedly connected with the bottom surface of each side plate 8, the bottom end of each gap ejector rod 6 is in threaded connection with the screw body 1, a transverse plate 11 is fixedly connected with the upper surface of each two supporting plates 10, a threaded hole 14 is formed in the upper surface of each transverse plate 11, and a threaded ejector rod 12 is in threaded connection with the inner wall of each threaded hole 14.

The top of screw ejector 12 is equipped with the rotating plate 13, the bottom surface of rotating plate 13 and the top fixed connection of screw ejector 12, can be convenient for control screw ejector 12 through being equipped with rotating plate 13 and rotate, thereby be convenient for make screw ejector 12 reciprocate through screw hole 14, the equal fixedly connected with of surface of every connecting pipe 4 consolidates piece 2, a side that two sets of consolidates pieces 2 are close to each other can consolidate backup pad 10 through being equipped with the reinforcing piece 2 respectively with the front of two backup pads 10 and the back fixed connection of two backup pads 10, increase backup pad 10's stability, prevent backup pad 10 to appear rocking, the top of control panel 16 is equipped with wear-resisting piece 5, the upper surface of wear-resisting piece 5 contacts with the bottom of screw ejector 12, can protect control panel 16 through being equipped with wear-resisting piece 5, avoid control panel 16 to use for a long time and receive wearing and tearing.

The upper surface fixedly connected with two extension springs 15 of control panel 16, the upper surface of every extension spring 15 all with the bottom surface fixed connection of diaphragm 11, can be convenient for pull control panel 16 through being equipped with extension spring 15 and restore to the throne, so that protect clearance ejector pin 6 before the clearance is eliminated, reduce the wearing and tearing of clearance ejector pin 6, the below of control panel 16 is equipped with two stopper 18, the bottom surface of two stopper 18 respectively with the upper surface fixed connection of two connecting pipes 4, can fix a position control panel 16 through being equipped with stopper 18, prevent that control panel 16 and nut 3 from bumping, the bottom surface of every curb plate 8 all fixedly connected with two locating plates 7, the side that two sets of locating plates 7 are close to each other respectively with the front of two clearance ejector pins 6 and the back fixed connection of two clearance ejector pins 6, can consolidate clearance ejector pin 6 through being equipped with locating plate 7, prevent that clearance ejector pin 6 from appearing the slope.

The working principle of the utility model is as follows: when the screw rod body 1 rotates, the nut 3 can be moved through threaded connection, the nut 3 pushes connected equipment to move, after the screw rod 3 is worn for a long time, the rotating plate 13 is rotated to drive the threaded ejector rod 12 to move downwards, the threaded ejector rod 12 pushes the wear-resisting block 5 to move downwards, so that the wear-resisting block 5 pushes the control plate 16 to move downwards, the control plate 16 pushes the sliding block 9 to slide in the sliding groove 17, the side plate 8 is driven to move downwards, the side plate 8 pushes the gap ejector rod 6 to move downwards, the gap ejector rod 6 is contacted with the screw rod body 1, the screw rod body 1 is pushed to move downwards, a gap between the nut 3 and the screw rod body 1 is eliminated, and accuracy of the nut 3 and the screw rod body 1 during matching is ensured.

While the utility model has been described with reference to the preferred embodiments, it will be apparent to those skilled in the art that the utility model is not limited to the details of the exemplary embodiments and that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof, as long as the scope of the utility model is defined by the claims and its spirit and scope. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. Screw gap elimination device, including screw rod body (1), its characterized in that, the surface threaded connection of screw rod body (1) has nut (3), the equal fixedly connected with connecting pipe (4) of the left and right sides face of nut (3), every equal fixedly connected with backup pad (10) of upper surface of connecting pipe (4), two spout (17) have all been seted up to the side that backup pad (10) are close to each other, every the equal sliding connection of inner wall of spout (17) has slider (9), two the common fixedly connected with control panel (16) of a side that slider (9) are close to each other, two the equal fixedly connected with curb plate (8) of a side that slider (9) are kept away from each other, every the bottom of curb plate (8) all with screw rod body (1) threaded connection, two the upper surface of backup pad (10) is fixedly connected with diaphragm (11) jointly, threaded hole (14) have been seted up to the upper surface of diaphragm (11), threaded hole (12) threaded connection has inner wall (12) of ejector pin (14).

2. The screw clearance elimination device according to claim 1, characterized in that a rotating plate (13) is arranged above the threaded ejector rod (12), and the bottom surface of the rotating plate (13) is fixedly connected with the top end of the threaded ejector rod (12).

3. Screw gap elimination device according to claim 1, characterized in that the outer surface of each connecting tube (4) is fixedly connected with two reinforcing blocks (2), and one side surface of two groups of reinforcing blocks (2) close to each other is fixedly connected with the front surfaces of two supporting plates (10) and the back surfaces of two supporting plates (10) respectively.

4. Screw clearance elimination device according to claim 1, characterized in that the upper part of the control plate (16) is provided with a wear-resistant block (5), the upper surface of the wear-resistant block (5) is contacted with the bottom end of the threaded ejector rod (12).

5. Screw gap elimination device according to claim 1, characterized in that the upper surface of the control plate (16) is fixedly connected with two tension springs (15), the upper surface of each tension spring (15) is fixedly connected with the bottom surface of the transverse plate (11).

6. Screw clearance elimination device according to claim 1, characterized in that two limiting blocks (18) are arranged below the control board (16), and the bottom surfaces of the two limiting blocks (18) are fixedly connected with the upper surfaces of the two connecting pipes (4) respectively.

7. Screw clearance elimination device according to claim 1, characterized in that the bottom surface of each side plate (8) is fixedly connected with two positioning plates (7), and one side surface of two groups of positioning plates (7) close to each other is fixedly connected with the front surfaces of two clearance ejector rods (6) and the back surfaces of two clearance ejector rods (6) respectively.