CN213968332U

CN213968332U - Automatic steel machine of getting of heavy rail and abnormal shape shaped steel

Info

Publication number: CN213968332U
Application number: CN202021416555.1U
Authority: CN
Inventors: 潘华; 李景伟; 张鹏
Original assignee: Shandong Province Metallurgical Engineering Co Ltd
Current assignee: Shandong Province Metallurgical Engineering Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-08-17
Anticipated expiration: 2030-07-17

Abstract

The invention belongs to the technical field of metallurgy, and relates to an automatic steel taking machine for heavy rails and special-shaped steel. The steel taking machine comprises a plurality of groups of steel taking trolleys and a transverse moving lifting system, wherein each steel taking trolley is driven by an independent variable frequency motor to reciprocate on a track through a chain, the transverse moving system is realized by a chain wheel and chain structure driven by a motor, and the lifting system adopts a mechanical hydraulic double-synchronous structure to carry out integral lifting. The steel taking trolley adopts a tumbler clamping structure to realize automatic accurate positioning and automatic steel division of the steel taking trolley, and can prevent sliding of heavy rails and special-shaped steel. The automatic control system realizes synchronous alignment of a plurality of groups of steel-taking trolleys in the advancing process through the track control of the motor encoder and the transverse moving position of the steel-taking trolleys. The invention has the advantages of realizing the automatic separation and the automatic steel taking of the heavy rail and the special-shaped steel and avoiding the defects of scratching and scuffing of the heavy rail and the special-shaped steel caused by the transverse displacement.

Description

Automatic steel machine of getting of heavy rail and abnormal shape shaped steel

Technical Field

The invention belongs to the technical field of metallurgy, and relates to an automatic steel taking machine for heavy rails and special-shaped steel.

Background

The heavy rail and special-shaped steel production cooling bed outlet steel taking machine consists of a steel taking trolley, a transverse moving lifting system and an auxiliary system, and has the function of automatically separating the heavy rail and transversely moving the heavy rail onto a cooling bed output roller way to carry out straightening operation. The cross sections of the heavy rails and the special-shaped section steel are of asymmetric structures, so that the cooling is not uniform in the cooling process of a cooling bed, the cooled heavy rails and the cooled special-shaped section steel are not straight, the position interval between the adjacent heavy rails is usually larger than 80mm after the cooling, but the irregular interval is partially 0mm, when the heavy rails and the special-shaped section steel are very small in interval or even closely arranged, the steel splitting operation of the heavy rails cannot be realized by the conventional flat plate type steel taking machine, and various defect conditions such as steel scraping and scratching can be caused by manual intervention.

At present, steel taking of a flat plate type steel taking machine is mainly realized through laser positioning, and the steel can be smoothly taken under the condition that the straightness of heavy rails or special-shaped steel is ideal, but because the heavy rails and the special-shaped steel on a cooling bed are not uniformly cooled and the superposition influence of a pre-bending trolley at the inlet of the cooling bed is caused, the straightness of each heavy rail at an outlet area is different, so that a laser device cannot be accurately positioned, and the steel receiving position of the steel taking machine cannot be accurately positioned.

The invention provides a steel taking machine which can realize automatic separation and automatic steel taking of heavy rails and special-shaped steel. In order to ensure the relative stability of the positions of the taken heavy rail, the taken special-shaped section steel and the steel-taking machine steel-supporting trolley, the steel-taking trolley has the functions of independently separating steel and preventing the heavy rail and the special-shaped section steel from sliding; because the heavy rail and the special-shaped steel which are taken out have certain bending degree, the steel supporting trolley of the steel taking machine is required to have the functions of automatic adjustment and automatic determination of the supporting point positions of the heavy rail and the special-shaped steel which are taken out; the steel supporting trolley of the steel taking machine is provided with a scratch-proof device which can be quickly replaced, the heavy rail and the special-shaped steel can be effectively restrained from irregular changes caused by residual stress in the steel taking process of the full length, and the surface of the heavy rail and the surface of the special-shaped steel can not be scratched.

Disclosure of Invention

The invention aims to solve the problem that the heavy rail and the special-shaped section steel cannot be automatically separated at the outlet of a production cooling bed, and realize the automatic separation and the automatic steel taking and transverse moving of the heavy rail and the special-shaped section steel.

The technical scheme of the invention is as follows:

the automatic steel transverse moving and taking machine for the heavy rails and the special-shaped steel is composed of a plurality of groups of steel taking trolleys and transverse moving lifting systems (for example, 33 groups of trolleys at the outlet of a hectometer heavy rail cooling bed), each steel taking trolley can realize independent operation control, and the transverse moving lifting structure can realize integral synchronous control.

The tumbler clamping structure is arranged to realize automatic accurate positioning of the steel taking trolley, and the concave space between the clamping jaw and the corresponding stop block can contain railheads of steel rails of all specifications and has a certain gap. The lifting of the tumbler device detects signals through the proximity switch. When the steel taking trolley is far away from the roller way to take steel, the proximity switch finishes the combined signal from normal power-on to short-time (about 0.15 second) power-off to power-on again, namely the signal that the trolley stops running currently. Thereby ensuring that each steel taking machine can automatically stop when the tumbler structure passes through the heavy rail and the special-shaped steel railhead. Realize automatic independent steel of minute to can prevent the slip of heavy rail, abnormal shape shaped steel.

Each steel taking trolley is driven by an independent variable frequency motor, four groups of rollers are adopted to be pulled on a movable guide rail to reciprocate through chains, and the four groups of rollers of the trolley are restrained through conduction and the guide rail, so that overturning, separation, deviation and the like in the running process are prevented.

The lifting device of the transverse moving lifting system adopts a crank connecting rod lifting mechanism and is driven hydraulically. A section of circular side arc (symmetrical about a horizontal line passing through the circle center) is used in the crank running track, the lifting height is 200mm, the self-transverse movement of the trolley is only 17mm, the transverse position of the trolley during lifting is reduced as much as possible, and the influence on adjacent section steel is avoided.

The automatic control system realizes synchronous alignment of a plurality of groups of steel-taking trolleys in the advancing process through the track control of the motor encoder and the transverse moving position of the steel-taking trolleys.

The invention has the beneficial effects that: the automatic separation and automatic steel taking of the heavy rail and the special-shaped steel are realized, and the automatic operation is realized; the defects of scratching and scuffing of the heavy rail and the special-shaped steel caused by the transverse displacement are avoided.

Drawings

FIG. 1 is a three-dimensional view of an automatic steel taking machine for heavy rails and special-shaped steel

FIG. 2 is a plan view of the automatic steel-taking machine for heavy rail and special-shaped steel

FIG. 3 is a main view of the automatic steel-taking machine for heavy rail and profiled bar

FIG. 4 is a side view of the automatic steel-taking machine for heavy rail and profiled bar of the present invention

FIG. 5 is a part diagram of the steel-taking trolley and the tumbler clamping device of the invention

FIG. 6 is a timing diagram of the automatic steel separating and taking action of the steel taking trolley of the invention

Description of reference numerals

1 tumbler grab

2 get steel dolly

3 traversing system

4 lifting system

5 lifting hydraulic cylinder

6 synchronous shaft

Detailed Description

Structural description: the steel taking machine comprises a tumbler clamping claw 1, a steel taking trolley 2, a transverse moving lifting system and an auxiliary system. The traversing lifting system comprises a traversing system 3 and a lifting system 4. The tumbler grab 1 is fixed on the steel taking trolley 2 through a pin shaft; the transverse moving system 3 comprises a variable frequency motor, a chain, a gear, a chain tensioning part and the like; the lifting system 4 comprises an upper cross beam, a guide rail, a pull rod, a crank, a synchronizing shaft 6, a lifting hydraulic cylinder 5 and the like. The steel taking trolley 2 is positioned on a guide rail of a beam at the upper part of the lifting system 4 and runs synchronously with a chain, chain wheels are fixed at two ends and the middle position of the beam of the lifting system 4, a variable frequency motor is positioned at the middle lower part of the beam (as shown in figure 3), the steel taking trolley 2 is driven by the chain wheels and the chain to transversely move when the motor rotates, a lifting hydraulic cylinder 5 drives a crank link mechanism, the lifting beam is driven to ascend and descend by the rotation of a synchronizing shaft 6, and the actions of the lifting hydraulic cylinder 5 and the variable frequency motor are controlled by programs through control elements such as a proximity switch and a rotary encoder. Each beam is provided with a steel taking trolley 2, each steel taking trolley 2 is independently controlled by a variable frequency motor, all lifting beams are fixed on a synchronizing shaft 6 through cranks, and each three cranks are provided with a lifting hydraulic cylinder 5. The number of the steel taking trolley 2 and the number of the lifting cross beams are determined according to the length of the section steel. The specific implementation mode is as follows:

1) taking a steel machine at an initial position: taking the side end of the steel trolley 2 at the roller way as a horizontal initial position; the lifting system 4 is in a low position, and the piston rod of the lifting hydraulic cylinder 5 is in a fully retracted state.

2) Advancing the steel taking machine: the transverse moving system 3 is started to operate in the forward direction, the steel taking trolley 2 moves from a horizontal initial position, the steel taking trolley moves in a synchronous and same-speed mode, the steel taking trolley enters a cooling bed range, when the steel taking trolley reaches a middle station in front of a position below the steel to be taken, the lifting hydraulic cylinder 5 is started, the lifting system 4 is lifted to a steel taking position, at the moment, the uppermost bearing surface of the lifting system 4 is 20mm lower than the surface of a fixed beam on the cooling bed, the transverse moving system 3 continues to operate in the forward direction, and the steel taking trolley 2 continues to move forwards.

3) Stopping the steel taking machine: the transverse moving system 3 continuously keeps running in the positive direction, when the steel taking trolley 2 passes through the head of the section steel to be taken, the tumbler clamping structure 1 is pressed down and floats up again, the proximity switch under the tumbler finishes a combined signal from normal power-on to short power-off (about 0.15 second) to power-on again, and the combined signal is a signal that the steel taking trolley 2 and the variable frequency motor stop running currently. And all the steel taking trolleys 2 stop after respectively obtaining stop signals (the tumbler swings and resets), all the variable frequency motors stop at the moment, and the steel taking trolleys 2 finish steel receiving. Because there are a plurality of groups to get steel dolly 2 quantity, proximity switch probably damages, in order not to influence production, can select proximity switch to put into operation quantity, and damaged proximity switch can temporarily forbid, changes during the maintenance.

4) Separating section steel: after the steel-taking trolley 2 finishes steel-dividing action, the lifting hydraulic cylinder 5 is started, the lifting system 4 is lifted by 30mm to a middle position, the variable frequency motor is reversely started, the steel-taking trolley 2 synchronously (at the same speed) moves 150mm (the moving distance can be adjusted according to production conditions) to the direction of a cold bed output roller way, densely arranged section steel is separated, single steel taking is ensured, and the scratch of second steel are not caused.

5) Lifting the steel taking machine to a high position: the variable frequency motor continues to be started reversely, and after all the steel-taking trolleys 2 finish moving 150mm towards the direction of the cold bed output roller way, the lifting hydraulic cylinder 5 is started, and the lifting system 4 is lifted to a high position at the same time.

6) Synchronously transporting to an output roller way: after all the lifting systems 4 reach the high position, the quick logic operation is carried out according to the stroke data of the steel-taking trolleys 2 reaching the target position, which is obtained by the horizontal stroke encoders of the steel-taking trolleys 2, the basic running speed of the steel-taking trolleys 2 is calculated, the variable frequency motor keeps rotating in the reverse direction, and the steel-taking trolleys synchronously (not necessarily at the same speed) move forward to the target position on the output roller way of the cooling bed. When the position is reached, the offset of the first steel-taking trolley 2 (the trolley closest to straightening) and all other steel-taking trolleys 2 is rapidly calculated, and if the offset of the first steel-taking trolley 2 and all other steel-taking trolleys 2 is within an allowable range (can be set), all the steel-taking trolleys 2 continuously and synchronously (at the same speed) run to the steel falling position of the output roller way of the cooling bed; and if the offset with other steel taking trolleys 2 exceeds the allowable range, the steel taking trolleys 2 are suspended for running, and an alarm is given to request an operator to manually process according to the field condition. The translation of the steel taking trolley 2 is controlled by speed based on the position, the steel taking trolley 2 takes the action track of one steel taking trolley 2 as a reference position in the normal operation process, if the steel taking trolley 2 deviates from the reference position and enters an adjustment interval, the deviated steel taking trolley 2 automatically adjusts the speed and draws the speed to the reference position in the operation (which is equivalent to double closed loop PID (proportion integration differentiation) adjustment based on the position), and in the operation adjustment process, because of the restriction of mechanical stress, if the variable frequency current exceeds the maximum operation set value, the frequency converter output is used as protection equipment, the current relative speed (or position) is kept, so that all the steel taking trolleys 2 are always on a horizontal line and a vertical line in the action process, and the aim of protecting field equipment is fulfilled.

7) Taking a steel machine and placing steel: after all get steel dolly 2 and reach the steel position within range that falls, promote pneumatic cylinder 5 and start, elevator system 4 descends simultaneously, places the shaped steel on the rollout table, puts steel action and accomplishes the back, gets steel dolly 2 and continues to descend until being less than the roll surface to safe distance, and the cold bed rollout table moves, transports the shaped steel to the straightening process. (at this time, the steel-taking trolley 2 and the lifting system 4 return to the initial position to wait for taking the next section steel)

8) Stopping the steel taking machine, and performing overload protection: when the steel taking trolley 2 is transported according to a set track, if the straightening stress exceeds a preset range because the section steel deforms too much, the section steel cannot be placed on a cold bed output roller way, alarming and stopping protection are achieved according to the torque and the loading capacity of the steel taking trolley 2, and manual intervention treatment is carried out.

Claims

1. The utility model provides an automatic steel machine of getting of heavy rail and abnormal shape shaped steel, mainly has the dolly of getting steel, the tumbler card is grabbed, gets steel dolly sideslip operating system, gets steel action sequential control system and constitutes its characterized in that: the steel taking trolley is provided with a tumbler clamping claw for taking steel, and the anti-scraping steel taking action time sequence is designed.

2. The automatic steel taking machine for the heavy rails and the special-shaped steel as claimed in claim 1, wherein: the steel taking machine trolley adopts a tumbler clamping and grabbing type structure, the head part of the tumbler clamping and grabbing contact profile steel is of a roller structure and can rotate freely along an intermediate shaft, the steel supporting surface of the trolley on the right side of the tumbler clamping and grabbing is of a planar structure, and the steel supporting surface of the trolley on the left side of the tumbler clamping and grabbing contact profile steel is of an inclined surface structure.

3. The automatic steel taking machine for the heavy rails and the special-shaped steel as claimed in claim 1, wherein: and designing and controlling a steel taking action time sequence, arranging a proximity switch below the tumbler clamp, wherein a combined signal from normal power-on to short power-off to power-on again of the proximity switch in the steel taking process is a start-stop signal of the steel taking trolley, the right side inclined plane of the trolley rises to the lower surface of the adjacent section steel after the steel is taken, the trolley moves to the right and is completely separated from the adjacent section steel, and the trolley rises to a high position and descends to an output roller table after moving to finish one-time steel separation.