CN213180592U

CN213180592U - Reduce sealed detection device of sizing roller box roof pressure hydro-cylinder

Info

Publication number: CN213180592U
Application number: CN202021908061.5U
Authority: CN
Inventors: 丁可俊; 吴海乐; 沙鹏飞
Original assignee: Nanjing Iron and Steel Co Ltd
Current assignee: Nanjing Iron and Steel Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-05-11
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a sealing detection device for a top pressure oil cylinder of a reducing and sizing roller box, which comprises a test bed, wherein an oil storage cavity for installing the top pressure oil cylinder is arranged in the test bed, an oil inlet is arranged at the bottom outside the test bed, and the oil inlet is communicated with the oil storage cavity; the outer wall of the test bed is fixedly connected with an L-shaped support, and the L-shaped support is provided with a mandril bolt which is used for hermetically fixing the jacking oil cylinder on the test bed. The utility model discloses a two screw-thread fit ejector pin bolts on test bench and the support are with the inclosed fixing of roof pressure hydro-cylinder spare part on the test bench, use convenient, detect reliably, can high-efficient accurate detection go out the sealed situation of locking pneumatic cylinder spare part, sieve out problem spare part fast, effectively reduce the emergence of equipment accident, guaranteed the product precision.

Description

Reduce sealed detection device of sizing roller box roof pressure hydro-cylinder

Technical Field

The utility model relates to a detection device especially relates to a subtract eccentric cover locking pneumatic cylinder sealing test detection device of sizing roller case.

Background

The reducing and sizing equipment of the high-speed wire rod production line mainly undertakes the control of the dimensional tolerance and precision of the final finished product during the wire rod production, and the running precision of the equipment directly influences the precision of the finished wire rod. In the operation process of the existing reducing and sizing equipment, in order to ensure that an eccentric sleeve arranged in a reducing and sizing roller box realizes '0' movement, the copper sliding block arranged on the upper end surface of the roller box and a sliding groove on the eccentric sleeve need to be controlled to move smoothly, the requirement of the fit clearance between the copper sliding block and the sliding groove is 0.02mm, the abrasion condition between the copper sliding block and the sliding groove is considered to occur, the clearance value is gradually increased, the precision of the roller box is directly influenced, so that the eccentric sleeve cannot realize '0' movement in the roller box, the top pressing oil cylinder needs to be used for carrying out top pressing on an ear plate on the eccentric sleeve, and further the clearance between the copper sliding block and the sliding groove. However, in actual work, since the quality condition of the top pressure cylinder cannot be identified and judged, when the device is used online, the phenomenon that the pressure is insufficient or cannot be maintained due to oil leakage of the top pressure cylinder is easy to occur, the effect of eliminating the gap between the sliding blocks cannot be achieved, and quality accidents are easy to occur.

SUMMERY OF THE UTILITY MODEL

The purpose of the invention is as follows: an object of the utility model is to provide a judge detection device who subtracts the sealed situation of sizing roller box roof pressure hydro-cylinder.

The technical scheme is as follows: the utility model discloses a reduce sizing roller case roof pressure hydro-cylinder seal detection device, including the test bench, be equipped with the oil storage chamber that is used for installing the roof pressure hydro-cylinder in the test bench, the bottom is equipped with the oil inlet outside the test bench, the oil inlet communicates with the oil storage chamber; the outer wall of the test bed is fixedly connected with an L-shaped support, and an ejector rod bolt used for sealing and fixing the jacking oil cylinder on the test bed is arranged on the L-shaped support.

The top end of the L-shaped support is aligned with the central line of the oil storage cavity, an internal thread through hole for installing a jacking oil cylinder is formed in the position, aligned with the central line of the oil storage cavity, of the top end of the L-shaped support, the jacking oil cylinder can be directly jacked by the jacking oil cylinder in the test, the jacking oil cylinder is fixed on the test bed, the distance between the top end of the L-shaped support and the upper surface of the test bed is 50-60 mm, the requirement that the jacking oil cylinder is adjusted in the vertical direction can be met, and the jacking oil cylinder is ensured to be sealed and fixed.

Further, the jacking oil cylinder comprises an oil cylinder sleeve and a copper plunger arranged in the oil cylinder sleeve, the upper end face of the copper plunger, which extends out of the oil cylinder sleeve, is right opposite to the ejector rod bolt, and is used for accurately positioning the top face of the copper plunger by the ejector rod bolt.

Furthermore, in order to improve the sealing performance of jacking the inside of the oil cylinder and connecting the copper piston with other parts, an O-shaped ring used for sealing with the oil cylinder sleeve is arranged on the excircle of the copper piston, and a rubber ring used for sealing with the internal thread is arranged at the root part of the external thread of the oil cylinder sleeve.

The working principle is as follows: the jacking oil cylinder to be detected is arranged in the thread of the oil storage cavity of the test bed, the ejector rod bolt on the support is rotated to enable the bottom surface of the bolt to be attached to the upper end surface of the plunger of the jacking oil cylinder, then the oil inlet of the test bed is connected with the oil pipeline of the high-pressure oil ejector, the pressure of the pressing oil ejector is controlled within the range of 34-36MPa, the pressure is maintained for 24 hours to observe whether the pressure is reduced, and if the pressure is not reduced and no oil leakage phenomenon exists around the pressure, the spare part of the jacking oil cylinder is judged to be intact and can be used safely.

Has the advantages that: compared with the prior art, the utility model, have following advantage: the utility model discloses a two screw-thread fit ejector pin bolts on test bench and the support are with the inclosed fixing of roof pressure hydro-cylinder spare part on the test bench, adopt high-pressure grease squirt to pour into high-pressure hydraulic oil into, carry out observation and detection of sufficient time to the roof pressure hydro-cylinder leakproofness, can high-efficiently accurate detect out the sealed situation of locking pneumatic cylinder spare part through this kind of mode, sieve out problem spare part fast, effectively reduce the emergence of equipment accident, guaranteed wire rod product precision.

Drawings

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

FIG. 2 is a schematic view of the location of an internally threaded through-hole;

FIG. 3 is a schematic view of the working principle of the device of the present invention;

fig. 4 is a schematic view of the overall structure of the top pressure oil cylinder assembly of the present invention;

fig. 5 is a schematic diagram of the structure of the top pressure oil cylinder of the present invention;

fig. 6 is a perspective view showing the operation principle of the jack cylinder.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Referring to fig. 1-2, the device for detecting the sealing of the top pressure oil cylinder of the reducing and sizing roller box comprises a test bed 1, wherein the test bed 1 is barrel-shaped, an oil storage cavity 2 is arranged in the test bed 1, and an internal thread 201 with the diameter of M33 x 3mm is processed on the inner wall of the test bed 1 and is used for installing the top pressure oil cylinder 3 to be detected; the side surface of the lower end of the test bed 1 is opened and processed into a G1/8 pipe thread oil inlet 4, and the oil inlet 4 is communicated with the oil storage cavity 2 and is used for connecting a high-pressure oil injector; a set of L type support 5 that has of outer wall fixedly connected with of test bench 1, the long limit of L type support 5 and the outer wall welding of test bench 1, the minor face of L type support 5 is located the top of test bench 1, the distance of the top of L type support 5 apart from the test bench upper surface is 55mm, a set of M16 internal thread through-hole 501 of position processing that aligns with the oil storage chamber 2 central line on L type support 5 minor face, install a piece M16 in internal thread through-hole 501 ejector pin bolt 6 of 100mm, a roof pressure hydro-cylinder 3 that is used for withholding required detection when experimental.

Referring to fig. 4, the top pressure oil cylinder 3 comprises an oil cylinder sleeve 301 and a copper plunger 302 arranged in the oil cylinder sleeve, wherein an M33 × 3mm external thread 303 is arranged outside the

oil cylinder sleeve

301, and 4 dismounting holes 304 are symmetrically distributed on the upper end surface of the oil cylinder sleeve and are used for screwing into an oil cavity of the roller box body and fastening in place; the top surface of the copper plunger 302 extends out of the upper end surface of the oil cylinder sleeve 301 and is opposite to the ejector rod bolt 6, and when the oil cylinder sleeve 301 is installed in the oil storage cavity 2, the lower end surface of the oil cylinder sleeve 301 is located at the upper part of the oil inlet 4.

Referring to fig. 5, after the jacking cylinder 3 is disassembled, a group of O-rings 401 are arranged in the middle of the outer circle of the copper plunger 302 and have the function of sealing between the copper plunger 302 and the cylinder sleeve 301; in addition, a group of rubber rings 402 are also arranged at the root of the external thread 303 of the oil cylinder sleeve 301, and have the function of sealing between the thread part of the jacking oil cylinder 3 and the internal thread 201 of the oil storage cavity, or between the internal thread of the reducing diameter roller box in actual production.

Referring to fig. 3, a jacking oil cylinder 3 to be detected is arranged in an oil storage cavity 2 of a test bed 1, a jacking rod bolt 6 is arranged in an internal thread through hole 501 on an L-shaped support 5, so that the bottom surface of the bolt is attached to the upper end surface of a copper plunger 302 of the jacking oil cylinder, then an oil inlet 4 of the test bed 1 is connected with an oil conveying pipe of a high-pressure oil injector, the pressure is controlled at 35MPa, the pressure is maintained for 24 hours to observe whether the pressure is reduced, if the pressure is not reduced and no oil leakage phenomenon exists around the pressure, the jacking oil cylinder spare part is judged to be intact and can be used safely, and otherwise, the experimental spare part is not usable.

The detected top pressure oil cylinder 3 can be directly used in a sizing reduction device, referring to fig. 6, an eccentric sleeve 102 is arranged in an inner hole of a roller box 101, the eccentric sleeve 102 needs to rotate in the roller box 101 according to production requirements, a copper slide block 103 is firmly arranged on the upper end surface of the roller box 101, the side arc surface is arranged in the upper chute 104 of the eccentric sleeve 102, when the rotation is needed, the slide block 103 slides in the chute 104, the matching clearance between the slide block and the chute is required to be 0.02mm, then the top pressure oil cylinder 3 with good quality is arranged on the side surface of the upper end of the roller box 101 and is connected with the hydraulic station through the oil hole 107, the hydraulic station provides 16MPa of oil pressure for the top pressure oil cylinder and keeps the pressure all the time when in work, the jacking oil cylinder 106 is stressed by the internal plunger to realize jacking effect on the lug plate 105 on the eccentric sleeve 102, so that the clearance between the sliding block 103 and the sliding groove 104 which is gradually increased due to abrasion is thoroughly eliminated, and the eccentric sleeve 102 realizes 0-position movement in the roller box 101.

Claims

1. The utility model provides a subtract sealed detection device of sizing roller box roof pressure hydro-cylinder which characterized in that: the test bed comprises a test bed (1), wherein an oil storage cavity (2) for mounting a jacking oil cylinder (3) is arranged in the test bed (1), an oil inlet (4) is arranged at the bottom of the outer side of the test bed (1), and the oil inlet (4) is communicated with the oil storage cavity (2); the outer wall of the test bed (1) is fixedly connected with an L-shaped support (5), and an ejector bolt (6) used for hermetically fixing the jacking oil cylinder (3) on the test bed (1) is arranged on the L-shaped support (5).

2. The sizing reduction roller box top pressure oil cylinder sealing detection device according to claim 1, characterized in that: and an internal thread through hole (501) for installing a mandril bolt (6) is formed in the position where the top end of the L-shaped support (5) is aligned with the central line of the oil storage cavity (2).

3. The sizing reduction roller box top pressure oil cylinder sealing detection device according to claim 2, characterized in that: the distance between the top end of the L-shaped support (5) and the upper surface of the test bed (1) is 50-60 mm.

4. The sizing reduction roller box top pressure oil cylinder sealing detection device according to claim 1, characterized in that: the jacking oil cylinder (3) comprises an oil cylinder sleeve (301) and a copper plunger (302) arranged in the oil cylinder sleeve, the upper end face of the copper plunger (302) extending out of the oil cylinder sleeve (301) is right opposite to the ejector rod bolt (6), the oil cylinder sleeve (301) is installed in the oil storage cavity (2), and the lower end face of the oil cylinder sleeve (301) is located on the upper portion of the oil inlet (4).

5. The sizing reduction roller box top pressure oil cylinder sealing detection device according to claim 4, characterized in that: the oil cylinder sleeve (301) is in threaded connection with the oil storage cavity (2), an external thread (303) is arranged on the outer side of the oil cylinder sleeve (301), and an internal thread (201) matched with the external thread (303) is arranged on the inner wall of the oil storage cavity (2).

6. The sizing reduction roller box top pressure oil cylinder sealing detection device according to claim 4, characterized in that: and an O-shaped ring (401) used for sealing the oil cylinder sleeve (301) is arranged on the excircle of the copper plunger (302).

7. The sizing reduction roller box top pressure oil cylinder sealing detection device according to claim 5, characterized in that: and a rubber ring (402) which is sealed with the internal thread (201) is arranged at the root part of the external thread (303) of the oil cylinder sleeve.

8. The sizing reduction roller box top pressure oil cylinder sealing detection device according to claim 1, characterized in that: the oil inlet (4) is externally connected with a high-pressure oil injector, and the pressure of the high-pressure oil injector is controlled to be 34-36 Mpa.