CN210475464U

CN210475464U - Crystallizer vibration oil cylinder

Info

Publication number: CN210475464U
Application number: CN201920241870.6U
Authority: CN
Inventors: 谢吉明; 董荣宝; 焦龙斌
Original assignee: China Coal Technology and Engineering Group Shanghai Co Ltd
Current assignee: China Coal Technology and Engineering Group Shanghai Co Ltd
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-05-08
Anticipated expiration: 2029-02-26

Abstract

The utility model discloses a crystallizer vibration hydro-cylinder, crystallizer vibration hydro-cylinder includes preceding cylinder body, rear cylinder body, piston rod gland, rear end cap, stand pipe and ball screw, last sealing ring, case, sealed step and the bearing of being equipped with of ball screw, the sealing ring is connected with the stand pipe cooperation, the case is connected with the valve barrel cooperation, sealed step is connected with the rear end cap cooperation, crystallizer vibration hydro-cylinder still includes a rotary seal part, rotary seal part is connected with rear end cap detachably to with the contact of floating of sealed step. The utility model discloses simple structure, simple to operate has reduced the wearing and tearing of ball and rear end cap, has improved life greatly.

Description

Crystallizer vibration oil cylinder

Technical Field

The utility model relates to a hydro-cylinder, concretely relates to crystallizer vibration hydro-cylinder.

Background

At present, a crystallizer vibration device of a continuous casting machine mainly adopts the following modes: the device comprises a cam mechanism, an electric oil cylinder, a servo valve closed-loop control oil cylinder and an electro-hydraulic stepping oil cylinder. The electro-hydraulic stepping oil cylinder integrates precision machinery, electricity and hydraulic technologies, and is connected with a computer through a digital interface of a stepping motor, so that the on-line control of speed and position can be conveniently realized. Under the open-loop control, the position precision can reach 0.01 mm/pulse, and the speed can reach 100 mm/s. The method has the characteristics of easy operation, high precision, quick response, high reliability, interference resistance, easy maintenance and the like, and is widely applied to the crystallizer of the continuous casting machine.

The electro-hydraulic stepping oil cylinder drives the ball screw to rotate through the stepping motor so as to drive the valve core to do linear motion, reciprocating motion of the oil cylinder is achieved, vibration is carried out according to a set waveform, the maximum frequency can reach 5Hz, and uninterrupted work can be carried out all the year round. In this case, the ball screw and the rear end cap, which are internal precision components, are frequently worn and are not usable.

The position precision can reach 0.01 mm/pulse under the open-loop control of the vibration oil cylinder of the crystallizer of the continuous casting machine, the speed can reach 100mm/s, the ball screw is driven by the stepping motor to rotate so as to drive the valve core to do linear motion, the reciprocating motion of the oil cylinder is realized, the vibration is carried out according to the set waveform, the maximum can reach 5Hz, and the uninterrupted work can be carried out all the year round. In this case, the ball screw and the rear end cap of the internal precision component are frequently severely worn, and the depth can reach 0.2 mm. The ball screw and the rear end cover which are key elements cannot be reused, and the problems of long service life and later repair of the oil cylinder are solved.

Referring to fig. 1 and 2, the mold oscillation cylinder generally includes a front cylinder body 110, a rear cylinder body 120, a piston rod 130, a piston rod gland 140, a rear end cap 150, a guide tube 160, and a ball screw 170, and a seal ring 171, a valve core 172, a seal step 173, and a bearing 174 are provided on the ball screw 170.

Through the cooperation of sealing ring 171 and stand pipe 160, can prevent that the inside fluid of hydro-cylinder piston chamber from leaking back to oil pipe, through case 172 and the cooperation of valve barrel, can realize that fluid gets into or flows out the piston chamber, through sealed step 173 and rear end cap 150 cooperation, can prevent that the inside fluid of piston chamber from leaking to the outside, can play through bearing 174 and support ball and reduce rotatory frictional resistance.

Since the ball screw 170 needs to be provided with the sealing ring 171, the valve element 172, the sealing step 173 and the bearing 174, 3 sealing surfaces and 1 supporting surface need to be provided on the ball screw 170, which causes two problems, firstly, the coaxiality of all the sealing surfaces and the supporting surfaces must be strictly controlled during processing, otherwise, the assembly problem or the performance problem is caused; secondly, after the vibration oil cylinder works for a long time, the lead screw and the rear end cover have serious abrasion phenomena, so that the lead screw and the rear end cover which are in other positions and are better are only scrapped due to abrasion of the sealing part of the sealing step.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem and provide a crystallizer vibration hydro-cylinder.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a crystallizer vibration hydro-cylinder, crystallizer vibration hydro-cylinder includes preceding cylinder body, rear cylinder body, piston rod gland, rear end cap, stand pipe and ball screw, the last sealing ring, case, sealed step and the bearing of being equipped with of ball screw, the sealing ring is connected with the stand pipe cooperation, the case is connected with the valve barrel cooperation, sealed step is connected with the rear end cap cooperation, crystallizer vibration hydro-cylinder still includes a rotary seal part, rotary seal part is connected with rear end cap detachably to with sealed step floating contact.

In a preferred embodiment of the present invention, the rotary sealing member includes a circular sealing seat and an O-ring, the sealing seat is sleeved on the ball screw and contacts with the sealing step, the sealing seat is provided with a plurality of fixing holes, the rear end cap is provided with a plurality of connecting screws, each connecting screw is correspondingly matched with one fixing hole, and the O-ring is disposed between the rear end cap and the sealing seat.

In a preferred embodiment of the present invention, the fixing hole is U-shaped.

In a preferred embodiment of the present invention, the rotary sealing member further includes a plurality of circular sleeves, and each circular sleeve is correspondingly inserted into one of the fixing holes.

In a preferred embodiment of the present invention, the height of the circular sleeve is greater than the height of the sealing seat, and the top end of the circular sleeve is provided with a limiting platform, which is not in contact with the sealing seat.

The utility model has the advantages that:

the utility model discloses simple structure, simple to operate has reduced the wearing and tearing of ball and rear end cap, has improved life greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a conventional mold oscillating cylinder;

FIG. 2 is a schematic view of the internal structure of FIG. 1;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic view of the interior of FIG. 3 at the rear end cap;

FIG. 5 is an enlarged view of area B of FIG. 4;

FIG. 6 is a schematic structural view of the seal seat;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

fig. 8 is a structural schematic diagram of the round sleeve.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 3 to 8, the utility model provides a crystallizer vibration cylinder, it includes preceding cylinder body 210, back cylinder body 220, piston rod 230, piston rod gland 240, rear end cap 250, stand pipe and ball screw 270, is equipped with sealing ring, case, sealed step 273 and bearing 274 on ball screw 270.

Through sealing ring and stand pipe cooperation, can prevent that the inside fluid of hydro-cylinder piston chamber from leaking back oil pipe, through case and valve barrel cooperation, can realize that fluid gets into or flows out the piston chamber, through sealed step 273 and the cooperation of rear end cap 250, can prevent that the inside fluid of piston chamber from leaking to the outside, can play through bearing 274 and support ball and reduce rotatory frictional resistance.

The present application further includes a rotary seal member that is directly detachably connected to the rear end cap 250 and is in floating contact with the seal step 273, thus reducing wear of the stationary seal surface of the ball screw 270 and improving the service life of the ball screw 270 and the rear end cap 250.

The rotary seal member includes an annular seal seat 310 and an O-ring 320.

The sealing seat 310 is made of a softer wear-resistant material, such as rubber, silica gel, copper alloy, and the like, and the through hole in the middle of the sealing seat can be penetrated by the ball screw 270, so as to be sleeved on the ball screw 270 and be in contact with the sealing step 273 on the ball screw 270.

The sealing seat 310 is provided with a plurality of fixing holes 311, the fixing holes 311 are specifically distributed at the edge of the sealing seat 310, the fixing holes 311 are used for realizing the detachable connection between the sealing seat 310 and the rear end cap 250, specifically, the rear end cap 250 is provided with a plurality of connecting screw holes, each connecting screw hole is correspondingly matched with one fixing hole 311, and a screw 312 penetrates through the fixing hole 311 and is matched and connected with the connecting screw hole, so that the detachable installation between the sealing seat 310 and the rear end cap 250 can be realized.

The fixing hole 311 is embodied in a U-shape for easy installation.

By installing the seal holder 310, a part of the force generated when the ball screw 270 rotates in the forward and reverse directions is transmitted to the seal holder 310 and is borne by the seal holder 310, so that the abrasion of the rear end cap 250 and the ball screw 270 is reduced, and the service life is improved.

An O-ring 320 is disposed between the rear end cap 250 and the sealing seat 310 for improving the sealing performance of the sealing seat 310.

In addition, in order to further reduce the wear of the rear end cap 250 and the ball screw 270 and improve the installation strength of the seal housing 310, the present application further includes a plurality of circular sleeves 400, and each circular sleeve 400 may be correspondingly inserted into one of the fixing holes 311.

Thus, during installation, each circular sleeve 400 is inserted into each fixing hole 311, and then the screw 312 is inserted through the circular sleeve 400 and then screwed into the connecting screw hole of the rear end cap 250.

In addition, the height of the circular sleeve 400 is greater than that of the sealing seat, and a limit table 410 is arranged at the top end of the circular sleeve 400, so that the limit table 410 is not in contact with the sealing seat 310, a floating gap 500 is formed, floating contact between the sealing seat 310 and the sealing step 273 is realized, and a fixed constraint of the ball screw 270 is released.

By adding the sealing seat 310, the O-shaped ring 320, the round sleeve 400 and the screw 312, the floating contact at the sealing step 273 can be realized, and one fixing constraint of the ball screw 270 is released. Meanwhile, the sealing seat 310 is made of a softer wear-resistant material, and after the ball screw 270 rotates forwards and backwards for a long time, only the sealing seat 310 is worn, so that the sealing step 273 and the rear end cover 250 are ensured to be intact, only the sealing seat 310 is replaced during repair, the wear is greatly reduced, and the service life is prolonged.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a crystallizer vibration hydro-cylinder, crystallizer vibration hydro-cylinder includes preceding cylinder body, rear cylinder body, piston rod gland, rear end cap, stand pipe and ball screw, the last sealing ring, case, sealed step and the bearing of being equipped with of ball screw, the sealing ring is connected with the stand pipe cooperation, the case is connected with the valve barrel cooperation, sealed step is connected with the rear end cap cooperation, its characterized in that, crystallizer vibration hydro-cylinder still includes a rotary seal part, rotary seal part is connected with rear end cap detachably to with sealed step floating contact.

2. The crystallizer vibration oil cylinder according to claim 1, wherein the rotary sealing component comprises a circular sealing seat and an O-shaped ring, the sealing seat is sleeved on the ball screw and is in contact with the sealing step, a plurality of fixing holes are formed in the sealing seat, a plurality of connecting screw holes are formed in the rear end cover, each connecting screw hole is correspondingly matched with one fixing hole, and the O-shaped ring is arranged between the rear end cover and the sealing seat.

3. The mold oscillating cylinder of claim 2, wherein said fixing hole is U-shaped.

4. The mold oscillating cylinder according to claim 2, wherein said rotary seal member further comprises a plurality of circular sleeves, each circular sleeve being inserted into a corresponding one of the fixing holes.

5. The crystallizer vibration oil cylinder as claimed in claim 4, wherein the height of the circular sleeve is greater than that of the sealing seat, and a limit table is arranged at the top end of the circular sleeve and is not in contact with the sealing seat.