阅读说明：本技术 一种轧机hgc液压缸的安装方法 (Mounting method of rolling mill HGC hydraulic cylinder ) 是由 贾帅 曾祥勇 李亮 毕国良 余江 于 2021-02-24 设计创作，主要内容包括：本发明是一种安全系数高,操作方便的轧机HGC液压缸的安装方法,涉及轧机安装技术领域。一种轧机HGC液压缸的安装方法,包括以下步骤：在轧机平衡梁之间搭设长度超过轧机横向长度的支撑平台,将HGC液压缸吊装在设置于该支撑平台上的平移小车上,并对HGC液压缸纵向定位；利用直线驱动装置推动平移小车移动,将HGC液压缸平移至轧机压下孔下方；利用提升装置将HGC液压缸提升至安装位置,将两根安装螺杆与HGC液压缸安装板连接；取下提升装置以及吊装螺杆,安装剩余安装螺杆。本发明可以节约劳动力,提高安装效率。(The invention discloses a mounting method of a rolling mill HGC hydraulic cylinder with high safety coefficient and convenient operation, and relates to the technical field of rolling mill mounting. A mounting method of a rolling mill HGC hydraulic cylinder comprises the following steps: erecting a supporting platform with the length exceeding the transverse length of the rolling mill between balance beams of the rolling mill, hoisting an HGC hydraulic cylinder on a translation trolley arranged on the supporting platform, and longitudinally positioning the HGC hydraulic cylinder; pushing the translation trolley to move by using a linear driving device, and translating the HGC hydraulic cylinder to the position below a rolling mill screw-down hole; lifting the HGC hydraulic cylinder to a mounting position by using a lifting device, and connecting the two mounting screws with the HGC hydraulic cylinder mounting plate; and taking down the lifting device and the hoisting screw, and installing the residual installation screw. The invention can save labor force and improve installation efficiency.)

1. The mounting method of the rolling mill HGC hydraulic cylinder is characterized by comprising the following steps:

step one, a supporting platform (1) with the length exceeding the transverse length of a rolling mill is erected between balance beams of the rolling mill (4), an HGC hydraulic cylinder (2) is hoisted on a translation trolley (11) arranged on the supporting platform (1), and the HGC hydraulic cylinder (2) is longitudinally positioned;

pushing the translation trolley (11) to move by using the linear driving device (12), and translating the HGC hydraulic cylinder to the position below a rolling mill pressing hole (41);

step three, mounting the HGC hydraulic cylinder mounting plate (3) on a rolling mill screw-down hole (41), firstly adjusting the position of a mounting threaded hole of the HGC hydraulic cylinder (2), enabling the mounting threaded hole of the HGC hydraulic cylinder (2) to correspond to the mounting hole of the HGC hydraulic cylinder mounting plate (3) one by one, then mounting two mounting screws (21) and two hoisting screws (22) with one ends penetrating through the mounting hole of the HGC hydraulic cylinder mounting plate (3) on the mounting threaded hole of the HGC hydraulic cylinder (2), mounting a hoisting plate (23) in threaded connection with the hoisting screws (22) above the HGC hydraulic cylinder mounting plate (3), finally connecting a lifting device with the hoisting plate (23), lifting the HGC hydraulic cylinder (2) to a mounting position by using the lifting device, and connecting the two mounting screws (21) with the HGC hydraulic cylinder mounting plate (3);

and step four, taking down the lifting device and the hoisting screw (22), and installing the residual installation screw (21).

2. A method for mounting rolling mill HGC cylinders according to claim 1, wherein said step of longitudinally positioning the HGC cylinders (2) comprises: before hoisting, aligning marks are made at the center of an HGC hydraulic cylinder (2), and an infrared emitting device (5) which corresponds to the center of a rolling mill pressing hole (41) and emits rays along the transverse direction of a rolling mill (1) is arranged on the rolling mill (4);

enabling the alignment mark to correspond to the ray emitted by the infrared emitting device (5) in the hoisting process, thereby completing alignment;

and finally, placing the HGC hydraulic cylinder (2) which is aligned on the translation trolley (11).

3. A method of mounting a rolling mill HGC hydraulic cylinder according to claim 1, characterized in that the linear actuator (12) is a jack mounted on the support platform (1).

4. A method for mounting a hydraulic cylinder of a rolling mill HGC according to claim 1, characterized in that the support platform (1) is placed on the holding hydraulic cylinders on both sides of the frame of the rolling mill (4) and is fixed to the frame of the rolling mill (4) by means of a snap connection.

5. A method for mounting a hydraulic cylinder of a rolling mill HGC according to claim 1, wherein the translation trolley (11) is provided with a support disc (111) for carrying the hydraulic cylinder (2) of the HGC, the support disc (111) being rotatably arranged.

6. The method for mounting a hydraulic cylinder of a rolling mill HGC according to claim 1, wherein the lifting device is a hand-operated block.

Technical Field

The invention relates to the technical field of installation of rolling mills, in particular to an installation method of a rolling mill HGC hydraulic cylinder.

Background

In all technical fields of rolling mills such as hot rolling, cold rolling and the like, an HGC (Hydraulic Gap control) hydraulic cylinder is an essential component for installing the rolling mill. The HGC hydraulic cylinder of the rolling mill is positioned at the upper part of the window of the mill housing, the lower part of the screw-down hole, and the mounting position is narrow and is not beneficial to mounting.

The traditional mounting mode of the HGC hydraulic cylinder of the rolling mill mainly utilizes the matching of the traveling crane and the chain block, and the HGC hydraulic cylinder of the rolling mill is mounted by changing the positions of two hook heads of the traveling crane and the chain block back and forth.

Disclosure of Invention

The invention aims to solve the technical problem of providing the mounting method of the rolling mill HGC hydraulic cylinder, which has high safety coefficient and convenient operation.

The technical scheme adopted by the invention for solving the technical problems is as follows: a mounting method of a rolling mill HGC hydraulic cylinder comprises the following steps:

step one, erecting a supporting platform with the length exceeding the transverse length of a rolling mill between balance beams of the rolling mill, hoisting an HGC hydraulic cylinder on a translation trolley arranged on the supporting platform, and longitudinally positioning the HGC hydraulic cylinder;

pushing the translation trolley to move by using a linear driving device, and translating the HGC hydraulic cylinder to the position below a rolling mill screw-down hole;

step three, mounting the HGC hydraulic cylinder mounting plate on a rolling mill screw hole, firstly adjusting the position of the HGC hydraulic cylinder mounting threaded hole to enable the mounting threaded hole of the HGC hydraulic cylinder to correspond to the mounting hole of the HGC hydraulic cylinder mounting plate one by one, then mounting two mounting screws and two hoisting screws with one ends penetrating through the mounting hole of the HGC hydraulic cylinder mounting plate on the HGC hydraulic cylinder mounting threaded hole, mounting a hoisting plate in threaded connection with the hoisting screws above the HGC hydraulic cylinder mounting plate, finally connecting a lifting device with the hoisting plate, lifting the HGC hydraulic cylinder to the mounting position by using the lifting device, and connecting the two mounting screws with the HGC hydraulic cylinder mounting plate;

and step four, taking down the lifting device and the hoisting screw rod, and installing the residual installation screw rod.

Further, the longitudinally positioning the HGC cylinder comprises: firstly, making an alignment mark at the center of an HGC hydraulic cylinder before hoisting, and installing an infrared transmitting device which corresponds to the center of a rolling mill screw-down hole and transmits rays along the transverse direction of the rolling mill on the rolling mill;

enabling the alignment mark to correspond to the ray emitted by the infrared emitting device in the hoisting process so as to complete alignment;

and finally, placing the HGC hydraulic cylinder which is aligned on the translation trolley.

Further, the linear driving device is a jack mounted on the supporting platform.

Furthermore, the supporting platform is placed on the holding hydraulic cylinders on two sides of the rolling mill stand and fixedly connected with the rolling mill stand in a buckling connection mode.

Furthermore, a supporting disk for bearing an HGC hydraulic cylinder is arranged on the translation trolley, the supporting disk can be rotatably arranged, and the lifting device is a hand-operated hoist.

The invention has the beneficial effects that: according to the installation method, the supporting platform is erected on the rolling mill, the HGC hydraulic cylinder is longitudinally positioned, then the supporting platform is utilized to translate the HGC hydraulic cylinder into the rolling mill in a trolley translation mode, transverse positioning is achieved, and finally the installation is achieved in a vertical lifting mode.

Drawings

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a schematic view of the support platform installation of the present invention;

FIG. 3 is a schematic view of the present invention showing the construction of the dolly;

shown in the figure: the device comprises a supporting platform 1, an HGC hydraulic cylinder 2, an HGC hydraulic cylinder mounting plate 3, a rolling mill 4, an infrared transmitting device 5, a buckle 6, a translation trolley 11, a linear driving device 12, a guardrail 13, a mounting screw 21, a hoisting screw 22, a rolling mill pressing hole 41, a supporting plate 111 and balls 112.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

As shown in fig. 1 and 2, the method for mounting the hydraulic cylinder of the HGC of the rolling mill of the present invention comprises the following steps:

step one, erecting a supporting platform 1 with the length exceeding the transverse (along the axial direction of a rolling mill roller) length of the rolling mill between balance beams of a rolling mill 4, wherein the specific length of the supporting platform 1 is convenient for personnel to operate, two ends of the platform can be provided with guardrails 13, an HGC hydraulic cylinder 2 is hoisted on a translation trolley 11 arranged on the supporting platform 1, and the HGC hydraulic cylinder is longitudinally positioned (along the rolling direction of the rolling mill) to meet the installation requirement;

secondly, pushing the translation trolley 11 to move by using the linear driving device 12, translating the HGC hydraulic cylinder to the position below a rolling mill pressing hole 41, and realizing the positioning in the transverse direction of the rolling mill;

step three, mounting the HGC hydraulic cylinder mounting plate 3 on the rolling mill screw-down hole 41, firstly adjusting the position of the mounting threaded hole of the HGC hydraulic cylinder 2 to enable the mounting threaded hole of the HGC hydraulic cylinder 2 to correspond to the mounting hole of the HGC hydraulic cylinder mounting plate 3 one by one, then mounting two mounting screws 21 and two hoisting screws 22 with one ends penetrating through the mounting hole of the HGC hydraulic cylinder mounting plate 3 on the mounting threaded hole of the HGC hydraulic cylinder 2, mounting a hoisting plate 23 in threaded connection with the hoisting screws 22 above the HGC hydraulic cylinder mounting plate 3, finally connecting a lifting device with the hoisting plate 23, lifting the HGC hydraulic cylinder 2 to the mounting position by using the lifting device, and connecting the two mounting screws 21 with the HGC hydraulic cylinder mounting plate 3;

and step four, taking down the lifting device and the hoisting screw 22, and installing the residual installation screw 21.

According to the installation method, the supporting platform is erected on the rolling mill, the HGC hydraulic cylinder is longitudinally positioned, then the supporting platform is used for translating the HGC hydraulic cylinder into the rolling mill (below the mill screwdown hole 41) in a trolley translation mode to realize transverse positioning, and finally the installation is realized by utilizing the guide effect of the hoisting screw 22 and adopting a vertical lifting mode.

The longitudinal positioning of the HGC hydraulic cylinder 2 can be realized in a manual measuring mode and can be carried out after the HGC hydraulic cylinder is dropped on the translation trolley 11, and the longitudinal positioning of the HGC hydraulic cylinder 2 is realized by the following steps: firstly, before hoisting, a contraposition mark is made at the center of an HGC hydraulic cylinder 2, and an infrared emitting device 5 which corresponds to the center of a rolling mill pressing hole 41 and emits rays along the transverse direction of a rolling mill 1 is arranged on the rolling mill 4; adjusting the position of the HGC hydraulic cylinder in the hoisting process to enable the alignment mark to correspond to the ray emitted by the infrared emitting device 5, thereby completing alignment; and finally, placing the HGC hydraulic cylinder 2 which is aligned on the translation trolley 11. Namely, the positioning is realized by adopting an infrared positioning mode in the hoisting process, and the mode is more convenient and quick.

The linear driving device 12 of the present invention is a jack mounted on the support platform 1. Of course, electric lead screws or hydraulic cylinders can also be used.

In order to ensure the stability of the supporting platform 1, the supporting platform 1 is placed on the holding hydraulic cylinders on two sides of the stand of the rolling mill 4, the supporting platform 1 is supported by the holding hydraulic cylinders, and the supporting platform 1 is fixed by adopting the clamping connection of the clamping buckles 6 and the stand of the rolling mill 4. The mode of adopting the buckle to connect still has the convenient characteristics of demolising.

In order to adjust the position of the mounting threaded hole of the HGC hydraulic cylinder 2 conveniently, the translation trolley 11 is provided with a supporting plate 111 for bearing the HGC hydraulic cylinder 2, and the supporting plate 111 can be arranged in a rotating mode. Specifically, a support plate 111 is inserted on the translation trolley 11, a support ball 112 is arranged between the support plate 111 and the translation trolley 11, and the ball 112 is arranged in an annular roller way with the center coinciding with the rotation center of the support plate 111.

The lifting device can be an electric hoist, a traveling crane and the like, the lifting speed of the device is high, the HGC hydraulic cylinder 2 is easy to collide with the frame due to the high lifting speed in the lifting process, and in order to avoid the situation, the lifting device is preferably a manual hoist with controllable lifting speed.