CN114764043A - Detection and maintenance device and method for long nozzle clamp of continuous casting machine - Google Patents

Abstract

The invention discloses a detection and maintenance device of a long nozzle clamp holder of a continuous casting machine, which comprises a support, an upper pressing mechanism and a force measuring unit, wherein the support comprises a bottom plate, an annular supporting plate and a plurality of supporting columns arranged on the bottom plate, the annular supporting plate is arranged above the bottom plate through the supporting columns, and the upper surface of the annular supporting plate is provided with a plurality of hanging feet matched with turnbuckles at the upper half part of the clamp holder; the upward pressing mechanism is arranged on the bottom plate and used for upward pressing the lower half part of the clamp holder; the force measuring system is used for detecting the pressure between the upper pressing mechanism and the lower half part of the pressing clamp holder in real time. The invention also discloses a detection and maintenance method. The invention can lead maintenance personnel to carry out rapid detection and maintenance on the clamping device under the condition of not dismantling the spring, thereby improving the maintenance efficiency of the clamping device.

Description

Detection and maintenance device and method for long nozzle clamp of continuous casting machine

Technical Field

The invention relates to a long nozzle of a continuous casting machine, in particular to a detection and maintenance device and method for a long nozzle clamp of a continuous casting machine.

Background

The continuous casting machine has become a trend of continuous casting operation in which a long nozzle is attached and detached from a ladle by a robot instead of a worker. The robot realizes the function of disassembling and assembling the long nozzle through the clamp. The structure of the long nozzle holder is shown in figures 1-2, and mainly comprises an upper part and a lower part, wherein the upper part 1 is in a spiral buckle shape and can be suspended on a sliding nozzle mechanism of a ladle through rotation; the lower half part 2 is used for placing a long nozzle and positioning the nozzle; the upper and lower parts are connected by four pre-tensioned springs 3. When the gripper is screwed on a ladle by a robot, the turnbuckle 4 of the upper half part 1 of the gripper is gradually screwed on the hitching leg of the ladle mechanism along with the screwing action, and the four springs 3 are gradually compressed, so that enough pressure is ensured to be kept between the long nozzle and the ladle drain nozzle, and molten steel is prevented from being spitted out and secondarily oxidized when the ladle is poured.

In the actual production process, the clamp holder often has the situation that the spring force is invalid or the compression is difficult due to poor lubrication after long-term use, which causes the abnormality that steel is vomited or the water gap cannot be normally installed when the water gap is cast, and the normal operation of production is seriously influenced. Therefore, it is important to perform timely inspection and maintenance of the clamp, especially to perform proper lubrication and maintenance of the spring thereon, and to periodically inspect the elastic performance thereof.

At present, only one off-line spring detection tool is needed for detection and maintenance of the long nozzle holder, and the tool can be used for detecting the elastic performance of each spring one by one after the spring is detached from the holder, so that the whole detection process is complicated and the detection range is limited. For the lubrication maintenance of the spring of the holder, because the upper part and the lower part of the holder are clamped by the spring in a normal assembly state, the spring support rod between the upper part and the lower part needs to be lubricated and can be realized only after the spring is dismounted from the holder, so that the timely maintenance of the holder cannot be realized in the production turnover.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a device and a method for detecting and maintaining a long nozzle holder of a continuous casting machine, which can enable maintenance personnel to quickly detect and maintain the holder without detaching a spring, and improve the maintenance efficiency of the holder.

On one hand, the detection and maintenance device for the long nozzle clamp holder of the continuous casting machine comprises a support, an upper pressing mechanism and a force measuring unit, wherein the support comprises a bottom plate, an annular support plate and a plurality of support columns arranged on the bottom plate, the annular support plate is arranged above the bottom plate through the support columns, and a plurality of hanging pins matched with the turnbuckles on the upper half part of the clamp holder are arranged on the upper surface of the annular support plate; the upward pressing mechanism is arranged on the bottom plate and used for upward pressing the lower half part of the clamp holder; the force measuring system is used for detecting the pressure between the upper pressing mechanism and the lower half part of the pressing clamp holder in real time.

The upward pressing mechanism comprises a hydraulic jack and a jacking disc, the bottom of the hydraulic jack is fixed in the middle of the bottom plate, a piston rod of the hydraulic jack faces upwards, the lower end of the jacking disc is arranged at the top of the piston rod, and the upper end of the jacking disc is abutted to a step on the lower half part of the clamp holder.

The lower end of the top disc is provided with a ring sleeve matched with the top of the piston rod, the top of the piston rod is sleeved with the ring sleeve, and the side wall of the ring sleeve is further provided with a wire arranging notch.

The force measuring system comprises a pressure sensor and a display unit, the pressure sensor is arranged in the ring sleeve and is positioned between the top disc and the top of the piston rod, and a data line of the pressure sensor penetrates out of the wire arranging notch and is connected to the display unit.

The piston rod is provided with scales.

On the other hand, the detection and maintenance method of the detection and maintenance device of the long nozzle clamp of the continuous casting machine comprises the following steps:

a. reversely buckling the clamp holder on an annular supporting plate of the detection and maintenance device, and screwing the turnbuckle at the upper half part of the clamp holder into the hanging legs;

b. driving the piston rod to extend upwards until the top disc is contacted with the step on the lower half part of the clamper, and recording the pressure value obtained by the display unit and the extension amount of the piston rod at the moment;

c. the piston rod is driven to continuously upwards jack, so that the spring of the clamp holder is pressed, the upper part and the lower part of the clamp holder are separated until the compression amount of the spring reaches a preset value and then stop, and the pressure value obtained by the display unit at the moment is recorded;

d. and comparing the recorded pressure value with the spring use standard to judge whether the spring meets the use requirement.

In step c, lubricating and maintaining the connecting rod between the upper part and the lower part of the separated clamper.

By adopting the detection and maintenance device and the method for the long nozzle clamp holder of the continuous casting machine, the performance of the clamp holder can be quickly and timely checked and the lubrication and maintenance operation can be carried out under the condition of not disassembling the spring of the clamp holder, the maintenance operation intensity of the clamp holder can be effectively reduced, the detection and maintenance efficiency is improved, and the stable performance of the clamp holder is ensured.

Drawings

FIG. 1 is a perspective view of a prior art long nozzle holder;

FIG. 2 is a cross-sectional view of a prior art long nozzle holder;

FIG. 3 is a schematic structural diagram of the inspection and maintenance device of the present invention;

FIG. 4 is a schematic view of a force cell according to the present invention;

FIG. 5 is a schematic structural view of the top plate of the present invention;

FIG. 6 is a schematic view of the inspection and maintenance device according to the present invention;

fig. 7 is a sectional view showing a state of use of the inspection and maintenance device of the present invention.

In the figure, the clamp comprises an upper clamp half part 1, a lower clamp half part 2, a spring 3, a turnbuckle 4, a bottom plate 5, a supporting plate 6, a supporting column 7, a hanging foot 8, a hydraulic jack 9, a top disc 10, a ring sleeve 11, a wire arranging notch 12, a pressure sensor 13 and a display unit 14.

Detailed Description

The invention further describes a detection and maintenance device of a long nozzle clamp of a continuous casting machine by combining the attached drawings and an embodiment.

As shown in fig. 3 to 5, the detection and maintenance device for the long nozzle holder of the continuous casting machine mainly comprises a support, an upper pressing mechanism and a force measuring unit, wherein the support comprises a disc-shaped bottom plate 5, an annular support plate 6 and a plurality of support columns 7 arranged on the bottom plate 5, the support plate 6 is arranged above the bottom plate 5 through the support columns 7, a plurality of hanging legs 8 matched with the turnbuckles 4 of the upper half part 1 of the holder are arranged on the upper surface of the support plate 6, and the turnbuckles 4 of the holder are screwed into the upper half part 1 of the holder to fix the holder; the upward pressing mechanism is fixedly arranged on the bottom plate 5 and is used for upwards penetrating through the supporting plate 6 to press the lower half part 2 of the clamp holder so as to compress the spring 3 and separate the upper part 1 and the lower part 2 of the clamp holder, and the maintenance operation is convenient while the detection is carried out; the force measuring system is used for detecting the pressure between the upper pressing mechanism and the lower half part of the pressing clamp holder in real time.

As an embodiment, the upward pressing mechanism comprises a hydraulic cylinder (a hydraulic jack 9 can be adopted) and a top disc 10, the bottom of the hydraulic jack 9 can be fixed in the middle of the bottom plate 5 in a welding mode and the like, a piston rod of the hydraulic jack 9 faces upwards, the lower end of the top disc 10 is arranged at the top of the piston rod, the upper end of the top disc 10 abuts against a step of the lower half part 2 of the clamp holder, and the stability of the upper disc 10 in contact with and jacking the lower half part 2 of the clamp holder can be guaranteed.

As an embodiment, the lower end of the top plate 10 is provided with a ring sleeve 11 matched with the top of the piston rod, the ring sleeve 11 is sleeved on the top of the piston rod, and the side wall of the ring sleeve 11 is further provided with a row of notches 12.

As an embodiment, the force measuring system comprises a pressure sensor 13 and a display unit 14, the pressure sensor 13 is arranged in the ring sleeve 11 and located between the top disc 10 and the top of the piston rod, a data line of the pressure sensor 13 penetrates out of the winding displacement notch 12 and is connected to the display unit 14, and pressure data of upward pressing of the piston rod can be measured in real time through the pressure sensor 13 and read through the display unit 14.

As an embodiment, the piston rod is provided with scales, so that the jacking stroke of the piston rod, namely the compression amount of the spring 3, can be conveniently controlled and recorded.

The detection and maintenance method of the detection and maintenance device of the continuous casting machine long nozzle clamp provided by the invention comprises the following steps:

as shown in fig. 6 to 7, before the operation, it is ensured that the hydraulic jack 9, the pressure sensor 13 and the top plate 10 are well assembled and coaxial along the axial direction of the bracket, the display unit 14 is in an open state, the hydraulic valve of the hydraulic jack 9 is in a locked state, and the piston rod is not extended. During operation:

a. firstly, reversely buckling a clamp on an annular supporting plate 6 of the detection and maintenance device, and screwing a turnbuckle at the upper half part of the clamp into a hanging pin 8;

b. then the piston rod is driven to extend upwards until the top disc 10 contacts with a step on the lower half part of the clamper, and the pressure value obtained by the display unit 14 and the extension amount of the piston rod at the moment are recorded;

c. then the piston rod is driven to continuously push upwards, so that the spring of the clamp holder is pressed, the upper part and the lower part of the clamp holder are separated until the compression amount of the spring reaches a preset value, and then the pressure value obtained by the display unit 14 at the moment is recorded; in the step, the connecting rod between the upper part and the lower part of the separated clamper can be lubricated and maintained according to the requirement, so that the usability of the clamper can be ensured;

d. then comparing the recorded pressure value with the spring use standard to judge whether the spring meets the use requirement;

after the detection and maintenance are completed, the hydraulic valve is opened, the hydraulic jack 9 is gradually decompressed, the clamp holder is gradually restored to the original state, the piston rod is pressed to the non-extending state, and the clamp holder is taken down.

In conclusion, the detection and maintenance device and the method for the long nozzle clamp of the continuous casting machine can enable maintenance personnel to quickly detect and maintain the clamp in time under the condition that the spring is not dismounted, so that the maintenance efficiency of the clamp is improved.

However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.

Claims (7)

1. The utility model provides a detection maintenance device of continuous casting machine long mouth of a river holder which characterized in that: the clamp comprises a support, an upper pressing mechanism and a force measuring unit, wherein the support comprises a bottom plate, an annular supporting plate and a plurality of supporting columns arranged on the bottom plate, the annular supporting plate is arranged above the bottom plate through the supporting columns, and a plurality of hanging legs matched with the turnbuckles on the upper half part of the clamp holder are arranged on the upper surface of the annular supporting plate; the upward pressing mechanism is arranged on the bottom plate and is used for upward pressing the lower half part of the clamp holder; the force measuring system is used for detecting the pressure between the upper pressing mechanism and the lower half part of the pressing clamp holder in real time.

2. The apparatus for inspecting and maintaining a long nozzle holder of a continuous casting machine according to claim 1, wherein: the upward pressing mechanism comprises a hydraulic jack and a jacking disc, the bottom of the hydraulic jack is fixed in the middle of the bottom plate, a piston rod of the hydraulic jack faces upwards, the lower end of the jacking disc is arranged at the top of the piston rod, and the upper end of the jacking disc is abutted to a step on the lower half part of the clamp holder.

3. The apparatus for detecting and maintaining the long nozzle holder of the continuous casting machine according to claim 2, wherein: the lower end of the top disc is provided with a ring sleeve matched with the top of the piston rod, the top of the piston rod is sleeved with the ring sleeve, and the side wall of the ring sleeve is further provided with a wire arranging notch.

4. A detecting and maintaining device for a long nozzle holder of a continuous casting machine according to claim 3, characterized in that: the force measuring system comprises a pressure sensor and a display unit, the pressure sensor is arranged in the ring sleeve and is positioned between the top disc and the top of the piston rod, and a data line of the pressure sensor penetrates out of the wire arranging notch and is connected to the display unit.

5. The apparatus for inspecting and maintaining a long nozzle holder of a continuous casting machine according to claim 2, wherein: scales are arranged on the piston rod.

6. The method for detecting and maintaining the device for detecting and maintaining the long nozzle holder of the continuous casting machine as claimed in claims 1 to 5, wherein: the method comprises the following steps:

a. the clamper is reversely buckled on an annular supporting plate of the detection and maintenance device, and the turnbuckle at the upper half part of the clamper is screwed into the hanging pin;

b. driving the piston rod to extend upwards until the top disc is contacted with the step on the lower half part of the clamper, and recording the pressure value obtained by the display unit and the extension amount of the piston rod at the moment;

c. the piston rod is driven to continuously upwards jack, so that the spring of the clamp holder is pressed, the upper part and the lower part of the clamp holder are separated until the compression amount of the spring reaches a preset value and then stop, and the pressure value obtained by the display unit at the moment is recorded;

d. and comparing the recorded pressure value with the spring use standard to judge whether the spring meets the use requirement.

7. The method for detecting and maintaining the device for detecting and maintaining the long nozzle holder of the continuous casting machine as claimed in claim 6, wherein: in step c, lubricating and maintaining the connecting rod between the upper part and the lower part of the separated clamper.

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