CN217354993U

CN217354993U - Automatic return nut locking hydraulic cylinder

Info

Publication number: CN217354993U
Application number: CN202220182960.4U
Authority: CN
Inventors: 顾为易; 李会; 沈胜
Original assignee: Wuxi Shangcheng Machinery Automation Equipment Co ltd
Current assignee: Wuxi Shangcheng Machinery Automation Equipment Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-09-02
Anticipated expiration: 2032-01-24

Abstract

The utility model discloses an automatic return stroke nut locking hydraulic cylinder, the cylinder body comprises a cylinder body, sliding connection has a first piston board in the cylinder body, screw plug post of first piston board upper end fixedly connected with, screw plug post upper end pass the cylinder body and with cylinder body upper end lateral wall sliding connection, a return stroke oil groove has been seted up to screw plug post lower extreme, sliding connection has a second piston board in the return stroke oil groove, piston post of second piston board lower extreme fixedly connected with, piston post lower extreme passes screw plug post and first piston board and fixed connection at the cylinder body lower extreme, the beneficial effects of the utility model are that: through the rotation of the output end of the servo motor and the transmission of the driving bevel gear and the driven bevel gear, the positioning nut can rotate while the threaded plug is stretched, so that the limitation that the hydraulic cylinder can only be positioned after stretching to a specified position is avoided, and the safety protection of the hydraulic cylinder in the stretching process is realized.

Description

Automatic return nut locking hydraulic cylinder

Technical Field

The utility model relates to a hydraulic cylinder technical field specifically is an automatic return nut locking hydraulic cylinder.

Background

The hydraulic oil cylinder is a jacking machine, has higher energy density and jacking capacity, and mainly utilizes hydraulic oil to push the piston plate to slide so as to realize jacking operation.

In order to guarantee that hydraulic cylinder can not retract because of the hydraulic cylinder that load or oil leak lead to after the jacking, can set up set nut on the screw thread cock, through the position of adjusting set nut, the screw thread cock that can avoid after the jacking retracts, however set nut all is through manual regulation, can't operate at the jacking in-process, lead to adjusting the protection after the jacking operation is accomplished, can't effectually play the guard action at the jacking in-process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic return nut locking hydraulic cylinder to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic return nut locking hydraulic oil cylinder comprises a cylinder body, wherein a first piston plate is connected in the cylinder body in a sliding manner, a threaded plug column is fixedly connected to the upper end of the first piston plate, the upper end of the threaded plug column penetrates through the cylinder body and is in sliding connection with the side wall of the upper end of the cylinder body, a return oil groove is formed in the lower end of the threaded plug column, a second piston plate is connected in the return oil groove in a sliding manner, a piston column is fixedly connected to the lower end of the second piston plate, the lower end of the piston column penetrates through the threaded plug column and the first piston plate and is fixedly connected to the lower end of the cylinder body, a connecting oil groove is formed in the piston column, a return oil hole is formed in the lower end of the side wall of the cylinder body and corresponds to the connecting oil groove, a positioning nut is connected to the upper end of the cylinder body in a rotating manner, the threaded plug column penetrates through positioning threads and is in threaded connection with the positioning nut, the cylinder body upper end just is located a set nut outside fixedly connected with a installing frame, fixedly connected with servo motor in the installing frame, servo motor output end fixedly connected with one initiative bevel gear, set nut outside lower extreme just with initiative bevel gear corresponding position fixedly connected with one driven bevel gear, initiative bevel gear and driven bevel gear meshing are connected.

Preferably, a jacking oil hole is formed in the lower end of the side wall of the cylinder body and corresponds to the return oil hole, oil is fed through the jacking oil hole, and hydraulic oil pushes the first piston plate to move upwards, so that the threaded plug is moved upwards.

Preferably, the piston column passes first piston board and with first piston board sliding connection, the equal fixedly connected with sealing washer in first piston board and piston column junction both ends, the leakproofness of first piston board and piston column junction can be guaranteed to the sealing washer.

Preferably, the lower end of the connecting oil groove is communicated with the return oil hole, and hydraulic oil enters through the return oil hole and enters the return oil groove, so that the first piston plate can be pushed to move downwards.

Compared with the prior art, the beneficial effects of the utility model are that: through the rotation of the output end of the servo motor and the transmission of the driving bevel gear and the driven bevel gear, the positioning nut can rotate while the threaded plug is stretched, so that the limitation that a hydraulic oil cylinder can be positioned only after being stretched to a specified position is avoided, and the safety protection of the hydraulic cylinder in the stretching process is realized.

Drawings

FIG. 1 is a front sectional view of the present invention;

fig. 2 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention;

fig. 3 is a schematic view of the front appearance structure of the present invention.

In the figure: 1. a cylinder body; 2. a first piston plate; 3. a threaded plug; 4. jacking oil holes; 5. a return oil hole; 6. a return oil groove; 7. a second piston plate; 8. a piston post; 9. connecting the oil groove; 10. installing a frame; 11. positioning a nut; 12. a servo motor; 13. a driving bevel gear; 14. a driven bevel gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an automatic return nut locking hydraulic oil cylinder comprises a cylinder body 1, a first piston plate 2 is connected in the cylinder body 1 in a sliding mode, a threaded plug 3 is fixedly connected to the upper end of the first piston plate 2, the upper end of the threaded plug 3 is connected with the side wall of the upper end of the cylinder body 1 in a sliding mode and penetrates through the cylinder body 1, a return oil groove 6 is formed in the lower end of the threaded plug 3, a second piston plate 7 is connected in the return oil groove 6 in a sliding mode, a piston column 8 is fixedly connected to the lower end of the second piston plate 7, the lower end of the piston column 8 penetrates through the threaded plug 3 and the first piston plate 2 and is fixedly connected with the lower end of the cylinder body 1, a connecting oil groove 9 is formed in the piston column 8, a return oil hole 5 is formed in the lower end of the side wall of the cylinder body 1 and corresponds to the connecting oil groove 9 in position, the upper end of the cylinder body 1 is rotatably connected with a positioning nut 11, the threaded plug 3 is in threaded connection with the positioning nut 11 and penetrates through the positioning thread, a mounting frame 10 is fixedly connected to the upper end of the cylinder body 1 and is positioned outside the positioning nut 11, the servo motor 12 is fixedly connected in the mounting frame 10, the driving bevel gear 13 is fixedly connected at the output end of the servo motor 12, the driven bevel gear 14 is fixedly connected at the lower end of the outer side of the positioning nut 11 and corresponds to the driving bevel gear 13 in position, and the driving bevel gear 13 is in meshed connection with the driven bevel gear 14.

Wherein, in order that the piston plate can freely stretch out and draw back, the jacking oil hole 4 is arranged at the lower end of the side wall of the cylinder body 1 and corresponds to the return oil hole 5 in position, and the lower end of the connecting oil groove 9 is communicated with the return oil hole 5.

Wherein, in order to guarantee the leakproofness of first piston plate 2 and piston post 8 junction, piston post 8 and first piston plate 2 sliding connection just pass first piston plate 2, and the equal fixed connection of sealing washer is at first piston plate 2 and piston post 8 junction both ends.

Specifically, when the utility model is used, the whole device is firstly connected with an external power supply, during the jacking operation, the hydraulic oil is fed through the jacking oil hole 4 to push the first piston plate 2 to move upwards, so that the threaded plug 3 moves upwards, in the process, the servo motor 12 is started at the same time, so that the output end of the servo motor 12 drives the driving bevel gear 13 to rotate, and the rotation of the driven bevel gear 14 can make the positioning nut 11 rotate, the expansion and the contraction of the threaded plug 3 can not be influenced, the retraction condition in the re-jacking process of the threaded plug 3 can be avoided, when the hydraulic oil cylinder returns, oil is fed through the return oil hole 5, so that the hydraulic oil enters the return oil groove 6 through the connecting oil groove 9, thereby pushing the first piston plate 2 to move downwards, and simultaneously, the output end of the servo motor 12 rotates reversely, so that the threaded plug 3 can return smoothly.

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 the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" 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, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "disposed", "connected", "fixed", "screwed" and the like are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral body; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above 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 an automatic return stroke nut locking hydraulic cylinder, its characterized in that, includes cylinder body (1), sliding connection has a first piston board (2) in cylinder body (1), a screw plug post (3) of first piston board (2) upper end fixedly connected with, screw plug post (3) upper end pass cylinder body (1) and with cylinder body (1) upper end lateral wall sliding connection, a return stroke oil groove (6) have been seted up to screw plug post (3) lower extreme, sliding connection has a second piston board (7) in oil groove (6), a piston post (8) of second piston board (7) lower extreme fixedly connected with, piston post (8) lower extreme passes screw plug post (3) and first piston board (2) and fixed connection is at cylinder body (1) lower extreme, a connection oil groove (9) have been seted up in piston post (8), a return stroke oil has been seted up to cylinder body (1) lateral wall lower extreme and the position corresponding with connection oil groove (9) oil groove (3) Hole (5), cylinder body (1) upper end is rotated and is connected with a set nut (11), screw plug (3) pass the set screw and with set nut (11) threaded connection, cylinder body (1) upper end just is located a set nut (11) outside fixedly connected with installing frame (10), servo motor (12) of fixedly connected with in installing frame (10), servo motor (12) output end fixedly connected with one initiative bevel gear (13), set nut (11) outside lower extreme just with initiative bevel gear (13) corresponding position fixedly connected with one driven bevel gear (14), initiative bevel gear (13) are connected with driven bevel gear (14) meshing.

2. The automatic return nut locking hydraulic cylinder according to claim 1, characterized in that: and a jacking oil hole (4) is formed at the lower end of the side wall of the cylinder body (1) and corresponds to the return oil hole (5).

3. The automatic return nut locking hydraulic cylinder according to claim 1, characterized in that: piston post (8) pass first piston board (2) and with first piston board (2) sliding connection, first piston board (2) and the equal fixedly connected with sealing washer in piston post (8) junction both ends.

4. The automatic return nut locking hydraulic cylinder according to claim 1, characterized in that: the lower end of the connecting oil groove (9) is communicated with the return oil hole (5).