CN112808794B - Upper roller set bracket positioning and locking device and roller changing method - Google Patents
Upper roller set bracket positioning and locking device and roller changing method Download PDFInfo
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- CN112808794B CN112808794B CN202011381501.0A CN202011381501A CN112808794B CN 112808794 B CN112808794 B CN 112808794B CN 202011381501 A CN202011381501 A CN 202011381501A CN 112808794 B CN112808794 B CN 112808794B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/14—Particular arrangements for handling and holding in place complete dies
Abstract
The invention discloses an upper roller set bracket positioning and locking device and a roller changing method. Comprises the following steps: a rear frame; the swing bracket is hinged in the rack through a pin shaft, the tail part of the hydraulic cylinder is arranged on the rack, and the free end of the piston rod side is hinged on the swing bracket so as to control the swing bracket to swing up and down in the rack; and the upper roll group bracket monitoring module is used for monitoring that the upper roll group bracket reaches a preset position and then starting the locking device to lock the upper roll group bracket. The upper roller set bracket positioning and locking device and the process have the advantages of simple conception, accurate positioning, reliable equipment and control process, high automation degree of the process, low equipment cost and convenient maintenance.
Description
Technical Field
The invention relates to an upper roll set bracket positioning and locking device and a roll changing method of a row straightener, in particular to an upper roll set bracket positioning and locking device and a roll changing method of a row straightener for operating a side frame movable high-rigidity small-section steel.
Background
A positioning and locking device and a method for an upper roller group bracket belong to the small steel row straightening technology in the field of steel rolling and are applied to the integral automatic roller changing process of a row straightening machine. The upper roll group bracket is matched with an automatic roll changing vehicle to quickly and integrally change all upper and lower straightening rolls, and the method is one of automatic roll changing process methods of the in-row straightening machine.
In the frame-movable in-line leveler, a frame on the operation side thereof is movable; the upper straightening roll system and the lower straightening roll system are of a three-section type assembly combined structure formed by adding bearing seats at two ends to a straightening roll in the middle. In the three-section assembled combined straightening roll system structure, bearing blocks at two ends are respectively arranged in racks fixed at two sides of a row of straightening machines, and the relative positions of the bearing blocks are changed along with the racks at the two sides during roll change without departing from the racks respectively; the straightening roll is positioned in the middle of the rack, when the rack is separated in a roll changing operation state, the upper straightening roll and the lower straightening roll are separated from the roll system structure of the straightening roll along the axial direction and can be integrally moved out of the rack by means of the upper roll group bracket and the automatic roll changing vehicle.
Before the roll changing process begins, the straightening operation is in an end state; the automatic roll changing vehicle is arranged in the row of straightening machines, wheels of the automatic roll changing vehicle are located on the track of the roll changing separation platform, and a non-bearing structure of the automatic roll changing vehicle does not interfere with the rotation of the lower straightening roll. When an automatic connection program between the automatic roll changing carts of the upper roll group bracket needs to be executed, the automatic roll changing carts are upwards jacked by a lifting hydraulic cylinder on the roll changing separation platform, and the bearing shaft neck of the lower straightening roll is matched with the corresponding arc-shaped groove structure of the automatic roll changing carts to form a supporting condition for the lower straightening roll.
Before the roll changing process begins, the upper roll group bracket is positioned at the inlet end of the row of the straightener. After the process of the automatic roller changing process is started, an upper roller group bracket is driven into a rack of the row straightener and positioned between an upper straightening roller group and a lower straightening roller group by depending on the bearing and the driving of a supporting roller surface in a front rack at the inlet end of the row straightener and a lower straightening roller neck of the row straightener; after necessary procedures of integral descending of an upper straightening roll group by a preset height, upward jacking of an automatic roll changing vehicle under the action of ascending and descending of a hydraulic cylinder of a roll changing separating platform, automatic splicing and connection of an upper roll group bracket and the automatic roll changing vehicle are executed, and the like, when a rack of the row of straightening machines is separated, the roll changing separating platform is pushed to a roll changing station along a guide rail along with an operation side rack, after an upper rail of the roll changing separating platform is butted with a ground fixed rail, the upper roll group bracket and all old straightening rolls carried on the automatic roll changing vehicle are horizontally moved out from the rail of the roll changing separating platform of the row of straightening machines to the ground fixed rail, the upper roll group bracket carrying all new straightening rolls and the automatic roll changing vehicle are driven into the rail of the row of rack roll changing separating platform of the row straightening machines in a roll changing state from the ground fixed rail, and the integral replacement process of the new and old straightening rolls is completed after the corresponding procedures are executed.
One of the key problems to be solved by the integrated automatic roll changing process is the accurate positioning of the upper roll set bracket in the advancing direction (or called longitudinal direction) of the section steel in the rack of the row of the straightening machine. In the process of guiding the upper roll group bracket into the rack of the row straightener, the upper roll group bracket is supported by a supporting roll surface at a profile steel inlet and a lower straightening roll surface of the row straightener, the height coordinate of the top of the supporting roll surface can be set in advance, the diameter of a roll neck at the supporting position of the lower straightening roll is a fixed value, and the height position of the upper roll group bracket in the traveling process in the rack of the row straightener is not changed all the time; therefore, after the upper roll group bracket enters the row of the straightening machine, the longitudinal positioning of the upper roll group bracket in the rack is accurately implemented, and the relative positions of the upper roll group bracket, the straightening roll and the automatic roll changing trolley, which are consistent with the designed roll changing operation requirement, between the upper roll group bracket and the upper straightening roll can be ensured; under the condition, the roll necks of all the upper straightening rolls can be ensured to fall into the set bearing position on the upper roll group bracket correctly, and the upper roll group bracket is ensured to be automatically assembled and connected with the automatic roll changing vehicle quickly and correctly, so that the automatic integral replacement of all new and old straightening rolls in the row straightening machine is realized.
Disclosure of Invention
Aiming at the problem of positioning the upper roll group bracket in the advancing direction (or longitudinal direction) of profile steel in the frame of the row straightening machine in the process of integrally replacing the rollers of the row straightening machine by adopting the upper roll group bracket matched with an automatic roller replacing vehicle, the invention provides a device and a method for quickly, correctly and accurately positioning and locking the upper roll group bracket in the longitudinal direction.
In order to achieve the above object, the present invention provides an upper roller set bracket positioning and locking device, comprising: a rear frame; the swing bracket is hinged in the rack through a pin shaft, the tail part of the hydraulic cylinder is arranged on the rack, and the free end of the piston rod side is hinged on the swing bracket so as to control the swing bracket to swing up and down in the rack; and the upper roller group bracket monitoring module is used for monitoring that the upper roller group bracket reaches a preset position and then starting the locking device to lock the upper roller group bracket.
In order to achieve the above object, the present invention provides a method for changing a roll of an upper roll set bracket, comprising the steps of:
1) The automatic roll changing vehicle is arranged in the in-row straightening machine, wheels of the automatic roll changing vehicle are located on a track of the roll changing separation platform, and a non-bearing structure of the automatic roll changing vehicle does not interfere with the rotation of the lower straightening roll;
2) When an automatic connection program between the automatic roll changing carts of the upper roll group bracket needs to be executed, the automatic roll changing carts are lifted upwards by a lifting hydraulic cylinder on the roll changing separation platform, and the bearing journals of the lower straightening rolls are matched with the corresponding arc-shaped groove structures of the automatic roll changing carts to form a supporting condition for the lower straightening rolls;
3) The upper roller group bracket is positioned at the inlet end of the row of the straightening machines; an upper roller group bracket is arranged between an upper straightening roller group and a lower straightening roller group and drives into a rack of the row straightener by means of bearing and driving of a supporting roller surface in a front rack at the inlet end of the row straightener and a lower straightening roller neck of the row straightener;
4) The upper roll group bracket is accurately positioned in the rack of the row of the straightening machine under the control of the positioning and locking device;
5) The upper straightening roll group integrally descends by a preset height; the automatic roll changing vehicle lifts upwards under the action of a lifting hydraulic cylinder of the roll changing separation platform, and the upper roll group bracket is automatically spliced and connected with the automatic roll changing vehicle;
6) The frames of the rows of straightening machines are separated, the roll changing separation platform is pushed to a roll changing station along the guide rail along with the operation side frame, after the upper rail of the roll changing separation platform is in butt joint with the ground fixed rail, the upper roller group bracket and all the old straightening rollers carried on the automatic roll changing vehicle are horizontally moved out of the rail of the roll changing separation platform of the rows of straightening machines to the ground fixed rail, the upper roller group bracket carrying all the new straightening rollers and the automatic roll changing vehicle are driven into the tracks of the roll changing separation platform of the rows of straightening machines in a roll changing state from the ground fixed rail, and the whole replacing process of the new straightening rollers and the old straightening rollers is completed.
The upper roller group bracket is used in the roller changing operation of the row of the straightening machines, is matched with the automatic roller changing vehicle, and bears the upper straightening roller group to carry out the roller changing operation. The upper roll group bracket is supported by a supporting roll surface and a lower straightening roll surface of the row of straightening machines when driving in/out of the row of straightening machines; when the supporting roll and the lower straightening roll rotate, the supporting roll and the lower straightening roll can drive in/out from the frame of the row of the straightening machine.
The upper roller set bracket includes: the device comprises a side vertical plate, a front end vertical plate, a rear end vertical plate, a cross beam and a positioning block; the side vertical plates on two sides are connected with the front end vertical plate, the rear end vertical plate and the cross beam to form a frame type structure; the middle part of the front end vertical plate is pasted with a reflecting film for position tracking, and the clamping parts at the two sides are pasted with welding backing plates. The lower bottom surfaces of the side vertical plates on the two sides of the upper roll group bracket are supported on the surface of the supporting roll and the roll surface of the roll neck at the two ends of the lower straightening roll when entering the row straightening machine; when the supporting roll and the lower straightening roll rotate, the bracket of the upper roll group is driven to drive the bracket into the rack of the row of the straightening machine. The upper surface of the side vertical plate at the two sides of the upper roll group bracket is provided with a plurality of arc-shaped groove structures for enabling the upper straightening roll to fall and positioning roll necks at the two ends of the upper straightening roll; the arc surface of the groove structure is matched with the outer diameter of the roll neck at the supporting positions at the two ends of the upper straightening roll; the circle centers of all the circular arc-shaped grooves are on the same horizontal straight line. The side vertical plates at two sides of the upper roller group bracket are provided with an inclined plane structure near the front end vertical plate, and positioning blocks are arranged near the rear end vertical plate and used for positioning relative to the automatic roller changing vehicle. Besides being used as a connecting member, the front end vertical plate of the upper roller set bracket has the main function of being defined as a positioning member matched with a locking device.
Roll neck structures at two ends of the upper straightening roll are matched with circular arc grooves on side vertical plates at two sides of the upper roll group bracket; when the roll necks at the two ends of the upper straightening roll are supported on the upper roll group bracket, the circle center of the roll necks is superposed with the circular arc-shaped circle center of the groove on the side vertical plate.
The roll neck structures at the two ends of the lower straightening roll are matched with the circular arc grooves on the side vertical plates at the two sides of the automatic roll changing vehicle; when the roll necks at the two ends of the upper straightening roll are supported on the automatic roll changing vehicle, the circle center of the roll necks is superposed with the circular arc-shaped circle center of the groove on the side vertical plate. When the roller changing program is executed, the roller necks at the two ends of the lower straightening roller bear the lower surfaces of the vertical plates at the two sides of the upper roller group bracket and drive the lower straightening roller to enter/exit the rack of the row straightening machine.
And the automatic roll changing trolley is matched with the upper roll group bracket to implement an integral roll changing process. The automatic roll changing vehicle has the functions of carrying a lower straightening roll and carrying an upper straightening roll through a bracket of an upper roll group, lifting the whole in a rack of the row of straightening machines by virtue of a roll changing separation platform and a lifting hydraulic cylinder, and driving in/out by virtue of an upper track of the roll changing separation platform.
The supporting roller is arranged in the front frame and can rotate under the action of a driving mechanism of the supporting roller; the elevation of the surface of the roller can be adjusted under the driving of the lifting mechanism of the roller. When the roller changing operation program is executed, the supporting roller adjusts the top surface elevation of the roller surface of the supporting roller to be at the same numerical value with the top surface elevation of the supporting roller necks at the two ends of the lower straightening roller, namely, when the top surface of the supporting roller and the top surface of the supporting roller necks of the lower straightening roller are positioned on the same horizontal plane, the supporting roller is conveyed to the upper roller group bracket.
A swing support, a hydraulic cylinder, a rotary trunnion and a pin shaft which are contained by the upper roller group bracket positioning and locking device are installed in the rear frame, and the positioning device, the locking device and the distance measuring module are installed on the swing support.
The swing support is used for carrying the positioning mechanism, the locking mechanism and the distance measuring device. The tail part of the swing bracket is connected with the rack at a fixed position of the rack through a rotary trunnion; the upper station and the lower station of the swing bracket are realized through the driving of a hydraulic cylinder. The tail end of the hydraulic cylinder is hung at the upper part of the frame, and the end of the piston rod is hinged with the swinging bracket through a pin shaft; when the hydraulic cylinder moves in a telescopic mode, the swing support swings around the center of the rotary trunnion on the rack. In the roll changing operation, the swing bracket swings and descends and is positioned at a station for positioning and locking the upper roll group bracket; during straightening operation, the swing bracket swings to the upper position and is positioned at a station where the section steel is straightened.
And the positioning mechanism is used for longitudinally positioning the upper roll group bracket in the row of straightening machines. The positioning mechanism is arranged at the lower part of the front end of the swinging bracket and symmetrically arranged on two sides of the center line of the swinging bracket. The positioning mechanism includes: stop head, sleeve, spring holder 1, spring holder 2, backing plate, nut, proximity switch (1). In the roll changing operation, when the upper roll group bracket enters the frame of the in-row straightener to be in place, the outer surface of the vertical plate at the front end of the upper roll group bracket is contacted with the stop head of the positioning mechanism, so that the upper roll group bracket is longitudinally positioned in the in-row straightener. The proximity switch 1 is used for roughly positioning the upper roll group bracket; the working principle is as follows: the upper surface of the vertical plate at the front end of the roller group bracket is used as an induction surface, and signals of the position of the vertical plate, which enters the rack of the row of straightening machines and reaches the front end and the stop head are extracted and used as signals for triggering the transmission control of the supporting rollers and the transmission control of the lower straightening rollers. Because the positioning mechanism is internally provided with the spring as a buffer component for the upper roll set bracket to be in moving contact with the stop head, after the upper roll set bracket is in moving contact with the stop head, the spring rebounds under the action of the spring, so that the outer surface of the front end vertical plate of the upper roll set bracket is separated from the stop head, and therefore, after the proximity switch (1) sends a signal and the lower straightening roll stops rotating, the locking mechanism is utilized to accurately position the upper roll set bracket for the second time.
And the locking mechanism is matched with the positioning mechanism to realize locking and positioning of the upper roll set bracket in the positioning process. The locking mechanisms are arranged on two sides of the positioning mechanism at the front end of the swing bracket and are symmetrically arranged with the center line of the swing bracket. The locking mechanism includes: corner cylinder, proximity switch (2), proximity switch (3). And the corner cylinder is used for locking the position of the upper roller set bracket. The proximity switches 2 and 3 are used for detecting the position of the corner cylinder clamping arm. The clamping arm in the corner cylinder has the technical characteristic of presenting two-stage motion of rotation and linear motion in the linear motion process of the piston rod. When the corner cylinder is arranged on the swing support, the reference 0 position is that the clamping arm is in a vertical state when a piston rod of the corner cylinder is completely retracted into the cylinder body, and the proximity switch 2 receives a sensing signal of the retraction position of the clamping arm in the vertical state; clamping the arm in the state that the piston rod extends out of the cylinder bodyIn the horizontal state, the proximity switch 3 receives a sensing signal of the extending position of the clamping arm in the horizontal state. When the piston rod of the corner cylinder enters a gradually extending state from the initial position of all the returned cylinder bodies, the first stage makes linear motion in a vertical state, and the second stage positively rotates the clamping arm 90 degrees from the vertical state 0 Is in a horizontal state; when the piston rod of the corner cylinder is in a gradually retreating state from the position where the piston rod of the corner cylinder is fully extended out of the cylinder body, the clamping arm in the first stage reversely rotates 90 degrees from the horizontal state 0 Is in a vertical state, and the second stage does linear motion in the vertical state. The locking mechanism utilizes the technical characteristics of two-stage motion of the corner cylinder, and the clamping arm pulls the vertical plate at the front end of the upper roller set bracket under the state of extending out of the vertical arm completely so as to keep the inner surface of the locking mechanism in contact with the stopper of the positioning mechanism. In the process, when the upper roller group bracket enters a rack of the row straightening machine and the outer surface of a front end vertical plate of the upper roller group bracket approaches/reaches a stop contact surface of the positioning mechanism, the upper surface (horizontal surface) of the front end vertical plate of the upper roller group bracket enters the lower part of the clamping arm in the horizontal state of the corner cylinder and a certain safety interval is reserved; when the clamping arm pulls the vertical plate at the front end of the upper roller group bracket, the piston rod of the corner cylinder performs retreating action, and the clamping arm rotates in the reverse direction by 90 degrees in a horizontal state 0 The back part is vertical, and the corresponding surface of the clamping arm and the inner surface (vertical surface) of the vertical plate at the front end of the upper roll group bracket form a parallel surface position relation with a certain distance; the piston rod of the corner cylinder continuously executes a retreating action, the clamping arm continuously retreats in a vertical state, and the corresponding surface of the clamping arm is in contact with the inner surface (vertical surface) of the vertical plate at the front end of the upper roller group bracket and drives the upper roller group bracket to move forwards until a gap between the outer surface (vertical surface) of the vertical plate at the front end of the upper roller group bracket and the contact surface of the stopper of the positioning mechanism is eliminated; at the moment, the contact surfaces of the clamping arms and the stoppers of the positioning mechanism are matched to clamp and lock the inner surface (vertical surface) of the vertical plate at the front end of the upper roller group bracket, so that the upper roller group bracket is longitudinally and accurately positioned in the row of straighteners.
The distance measuring device includes: and the distance measuring module and the control system are used for dynamically controlling the conveying speed and the mechanism action of the upper roll group brackets at different longitudinal positions in the row of the straightening machines in real time. The distance measuring module is arranged in a cavity arranged in the middle of the swing support and used for dynamically measuring the advancing/retreating real-time position of the upper roller set bracket, and the control system feeds back the real-time position of the upper roller set bracket in the row of the straightener reflected by the signal feedback of the distance measuring module to implement different speed, locking and other control strategies.
The upper roll group bracket is matched with the automatic roll changing vehicle, and the technological process for quickly and integrally changing all upper and lower straightening rolls of the row straightening machine is as follows:
1) The upper straightening roll of the row straightening machine is positioned at a straightening station; the swing support is positioned at a straightening station, a piston rod of a corner cylinder of the locking mechanism is completely retracted, the clamping arm is in a vertical state, and a proximity switch (2) sends a signal; the wheels of the automatic roll changing vehicle fall on the roll changing separation platform track, and the lifting hydraulic cylinder of the automatic roll changing vehicle is in a retraction position.
2) The swing bracket is lowered from the straightening station to the roll changing station; and lifting the upper straightening roll of the row straightening machine to the roll changing high position.
3) The piston rod of the corner cylinder of the locking mechanism extends out completely, the clamping arm of the corner cylinder is in a horizontal state, and the proximity switch (3) sends a signal;
4) The upper roll group bracket is positioned at the inlet position of the row of straightening machines, the distance measuring device works, and the position tracking is carried out by utilizing a reflecting film in the middle of a vertical plate at the front end of the upper roll group bracket;
5) The supporting roll and the lower straightening roll of the row straightener start to rotate at a low speed, the upper roll group bracket enters the end from the type steel of the row straightener, between the supporting roll and the upper straightening roll, the lower surface of the side vertical plate of the upper roll group bracket is supported on the surfaces of roll necks of the supporting roll and the lower straightening roll, and the side vertical plate is driven by the supporting roll and the lower straightening roll to enter a rack of the row straightener; when the vertical plate at the front end of the upper roller group bracket enters a first lower straightening roller, rotating to increase the speed;
6) When the vertical plate at the front end of the upper roller group bracket is close to the stop head of the positioning mechanism, the supporting roller stops rotating, and the lower straightening roller slows down; the proximity switch 3 holds the signal;
7) Under the condition that the proximity switch (3) keeps a signal, the upper surface of a vertical plate at the front end of the upper roller group bracket enters under a clamping arm of the corner cylinder; the outer surface of the front end vertical plate is close to the stopper of the contact positioning device; the proximity switch 1 senses the upper surface of a vertical plate at the front end of the upper roller set bracket; the approach switch 1 sends a signal; the supporting roll and the upper straightening roll stop rotating.
8) The clamping arm of the corner cylinder is driven by the piston rod to rotate reversely 90 0 Then retreating under the driving of the piston rod; the clamping arm of the corner cylinder and the stopper of the positioning device cooperate to clamp the vertical plate at the front end of the upper roller set bracket to enable the vertical plate to be locked and positioned.
9) The upper straightening roll descends to a safe distance (the preferred distance is 5-10 mm) reserved between the surfaces of the bearing roll necks at the two ends and the surface of the positioned circular arc groove;
10 ) the clamping arm of the corner cylinder is extended vertically, forward 90 0 Rotate 90 0 The clamping arm is horizontally positioned above a vertical plate at the front end of the upper roller group bracket;
11 The swing bracket returns to the straightening position, the horizontal clamping arm of the corner cylinder returns and rotates to return to the vertical state, and the proximity switch 2 sends a signal;
12 Lifting a lifting hydraulic cylinder of the roll changing separation platform, lifting an automatic roll changing vehicle, and enabling the corresponding front end surface and the corresponding rear end surface of the automatic roll changing vehicle to be in contact with the lower surface of a vertical plate of an upper roll group bracket to automatically connect the front end surface and the rear end surface of the automatic roll changing vehicle;
13 The frame on the operation side drives the roll changing separation platform to slide to a roll changing station along a frame guide rail, and all upper and lower straightening rolls carried in an upper roll group bracket and an automatic roll changing vehicle are respectively separated from a self three-section type assembling combined roll system structure along the axial direction;
14 When the frame on the operating side reaches the roll changing station, the rail of the roll changing separation platform is automatically butted with the ground fixed rail; a lifting hydraulic cylinder of the roll changing separation platform descends, and an automatic roll changing vehicle falls onto a track of the roll changing separation platform;
15 Under the condition that the strip (14) is met, the upper roll group bracket and the automatic roll changing vehicle carry the old straightening roll to run out, and the upper roll group bracket carrying the new straightening roll and the connecting body of the automatic roll changing vehicle run into a rack track of the roll changing separating platform and are centered;
16 ) the rack on the operation side of the row straightener drives the roll changing separation platform to carry the upper roll group bracket of the new straightening roll and the automatic roll changing vehicle to return to the straightening station, and then other corresponding programs are executed, so that the automatic integral replacement of all the new straightening roll and the old straightening roll in the row straightener is realized.
The invention aims at the problem of positioning the upper roll group bracket in the advancing direction (or called longitudinal direction) of profile steel in a rack of a row of straightening machine in the technical process of integrally changing the roll of the row of straightening machine by adopting the upper roll group bracket to be matched with an automatic roll changing vehicle, and after the upper roll group bracket enters the row of straightening machine, the upper roll group bracket is assisted by a positioning and locking device to be quickly and accurately longitudinally positioned in the rack of the row of straightening machine, so that the relative position between the upper roll group bracket and a straightening roll is ensured to correctly fall into the set bearing position on the upper roll group bracket under the condition that the mutual position between the upper roll group bracket and the upper straightening roll meets the design requirement; the relative position between the upper roll group bracket and the automatic roll changing vehicle is ensured to ensure the quick automatic connection between the upper roll group bracket and the automatic roll changing vehicle, so that the operation condition that all straightening rolls are integrally and automatically changed in the rack of the in-row straightening machine is formed, and the efficient, quick and integral automatic replacement of all new and old straightening rolls of the in-row straightening machine is realized.
Drawings
FIG. 1a is an explanatory view of the position of the apparatus in the process of positioning and locking the upper roll set bracket and changing the roll in accordance with the present invention; FIG. 1b is a perspective view of FIG. 1 a;
FIG. 2 is an explanatory view of a structure of an upper roll set carrier of the present invention;
FIG. 3 is an explanatory view of the relationship of the supporting structure of the lower surface of the upper roll set bracket of the present invention supported by the roll necks of the lower straightening rolls;
FIG. 4 is a view illustrating the position of the roll necks of the upper and lower straightening rolls according to the present invention;
FIG. 5 is an explanatory view of a coupling state of the upper roll set bracket and the automatic roll changer of the present invention;
FIG. 6a is a schematic view of the swing bracket of the present invention in a positioning and locking position; FIG. 6b is a schematic view of the pendulum support in a straightening station;
FIG. 7a is a front view of the positioning and locking device of the present invention in the installed position; FIG. 7b is a top view of the positioning and locking device of the present invention in the installed position; FIG. 7c is a side view of the installation location of the securing device of the present invention; FIG. 7d is a component unit position diagram;
FIG. 8 is a structural explanatory view of the positioning and locking device of the present invention;
FIG. 9 is an explanatory view of the position of the ranging module of the present invention in the swing frame;
fig. 10 is an explanatory view of the corner cylinder and the motion phase of the invention.
FIG. 11 shows the swing bracket positioned at the straightening station and the upper straightening roll positioned at the straightening station;
FIG. 12 shows the swinging support rotating down to the roll changing station with the upper straightening roll at the roll changing high position;
FIG. 13 shows the locking mechanism with the corner cylinder extended, the proximity switch K3 signaled, and the clamping arm in a horizontal position;
FIG. 14 shows the upper roll set carriage at the entrance of the front frame and the rangefinder operating;
FIG. 15 shows the upper roll set bracket entering at a low speed and the front end entering the first straightening roll to increase the speed;
FIG. 16 shows the upper roll set carrier approaching the stop of the positioning device, the back-up roll stalling, and the lower straightening roll slowing down;
FIG. 17 shows that the front end of the upper roll set bracket contacts with the stopper of the positioning device, and signals are sent when the front end approaches K1, and the lower straightening roll stops rotating;
FIG. 18 shows that the clamping arm of the corner cylinder is reversed by 90 degrees and then retreated, and the clamping arm and the stopper lock the vertical plate at the front end of the upper roller set bracket;
FIG. 19 shows the upper straightening roll set descending with the roll neck at a safe slight distance from the circular groove surface of the upper roll set bracket;
FIG. 20 shows that the clamping arm of the corner cylinder moves forward after rotating forward by 90 degrees, and the clamping arm is horizontally positioned above the vertical plate at the front end of the upper roller set bracket;
FIG. 21 the swing frame is returned to the straightening station, the corner cylinder clamp arm is rotated in reverse 90 degrees and retreated, and the clamp arm is in a relatively vertical state;
FIG. 22 shows the roll-changing separating platform with the jacking cylinder raised and the automatic roll-changing carriage with the upper roll stack bracket automatically connected to the upper roll stack;
FIG. 23 illustrates the roll-changing separating platform moving with the operating side frame, with all of the upper straightening rolls falling into the upper roll set bracket recesses, and all of the straightening rolls being separated from the roll frame with the automatic roll-changing carriage and the upper roll set bracket;
FIG. 24 shows the automatic roll changer and the upper roll set bracket on the roll changing separating platform descending, the automatic roll changer falling into the roll changing separating platform track;
FIG. 25 shows the butt joint of the roller-changing separation platform rail and the ground fixed rail, the old roller-bearing automatic roller-changing vehicle and the upper roller set bracket move out, and the new roller enters.
Detailed Description
The upper roll set bracket positioning and locking device of the invention comprises: a rear frame; the swing bracket is hinged in the rack through a pin shaft, the tail part of the hydraulic cylinder is arranged on the rack, and the free end of the piston rod side is hinged on the swing bracket so as to control the swing bracket to swing up and down in the rack; a locking device is arranged on the swing bracket towards one side of the front rack, the locking device is used for locking and fixing the upper roller set bracket through the rear rack and the swing bracket, and mechanical locking, hydraulic locking, electromagnetic locking and the like can be selected according to requirements; the upper roller set bracket monitoring module is used for monitoring that the upper roller set bracket reaches a preset position and then starting the locking device to lock the upper roller set bracket; it can be a travel switch, a proximity switch or a photoelectric switch and the like which are arranged on the front frame or the rear frame; or a radar ranging module and a laser ranging module;
the invention is further described with reference to the following figures and examples.
As shown in fig. 1 to 25, the present invention includes: the device comprises a rear frame 9, a swing bracket, a rotary trunnion, a pin shaft, a hydraulic cylinder, a positioning mechanism, a locking mechanism and a distance measuring device; the distance measuring device comprises: the distance measurement module and the control system are arranged; the equipment involved in the roll changing process of the invention comprises: the automatic roll changing machine comprises a front frame 1, a supporting roll 2, an upper roll group bracket 3, an upper straightening roll 4, a lower straightening roll 5, an automatic roll changing vehicle 6, a roll changing separation platform 7, a positioning locking device 8 and a rear frame 9.
As shown in fig. 11 to 25, the upper roll set bracket 3, the upper straightening roll 4, the lower straightening roll 5, the automatic roll changing carriage 6, the supporting roll 2, the roll changing separating platform 7 and the positioning locking device 8 are combined and applied to the process of automatic connection between the upper roll set bracket 3 and the automatic roll changing carriage 6 and rapid and integral replacement of all the upper and lower straightening rolls in the row straightener.
As shown in figures 2 and 5, the upper roll group bracket 3 is used in the roll changing operation of the in-line straightener and matched with an automatic roll changing vehicle 6 to bear the upper straightening roll group for roll changing operation. When the upper roller group bracket 3 drives in/out the row of straightener, the roller surface of the supporting roller 2 and the roller surface of the lower straightening roller 5 of the row of straightener bear the upper roller group bracket; when the supporting rolls 2 and the lower straightening rolls 5 rotate, they can be driven in/out of the frames of the row of the straightening machine. The upper roller group bracket 3 includes: the side vertical plate 3.1, the front end vertical plate 3.2, the rear end vertical plate 3.3, the cross beam 3.4, the positioning block 3.5, the reflecting film 3.6 and the backing plate 3.7; the side vertical plates 3.1 on the two sides are connected with the front end vertical plate 3.2, the rear end vertical plate 3.3 and the cross beam 3.4 to form a frame type structure; the middle part of the front end vertical plate 3.2 is pasted with a reflecting film 3.6 for position tracking, and the clamping parts at the two sides are pasted with a welding pad plate 3.7. The lower bottom surfaces of the side vertical plates 3.1 at the two sides of the upper roller group bracket 3 are supported on the surface of the supporting roller 2 and the roller surfaces of the roller necks at the two ends of the lower straightening roller 5 when entering the row of straightening machines; when the supporting rolls 2 and the lower straightening rolls 5 rotate, the upper roll group brackets 3 are driven to drive into the frames of the row of the straightening machines. The upper surface of the side vertical plate 3.1 at the two sides of the upper roll group bracket is provided with a plurality of circular arc groove structures used for the upper straightening roll 4 to fall into and position roll necks at the two ends of the upper straightening roll; the arc surface of the groove structure is matched with the outer diameter of the roll neck at the supporting positions at the two ends of the upper straightening roll 4; the circle centers of all the circular arc-shaped grooves are on the same horizontal straight line. The side vertical plates 3.1 at the two sides of the upper roller group bracket 3 are provided with an inclined plane structure near the front end vertical plate 3.2, and positioning blocks are arranged near the rear end vertical plate 3.3 and used for positioning relative to the automatic roller changing vehicle 6. The front end vertical plate 3.2 of the upper roller group bracket 3 is used as a connecting component, and the main function of the connecting component is defined as a positioning component matched with a locking device.
As shown in fig. 2, the roll neck structures at two ends of the upper straightening roll 4 are matched with the circular arc grooves on the side vertical plates 3.1 at two sides of the upper roll group bracket 3; when the roll necks at the two ends of the upper straightening roll 4 are supported on the upper roll group bracket 3, the circle center of the roll necks is superposed with the circle center of the arc of the groove on the side vertical plate.
As shown in fig. 5, the roll neck structures at two ends of the lower straightening roll 5 are matched with the circular arc-shaped grooves on the side vertical plates 6.1 at two sides of the automatic roll changing vehicle 6; when the roll necks at the two ends of the upper straightening roll 4 are supported on the automatic roll changing trolley 6, the circle center of the roll necks is superposed with the circular arc-shaped circle center of the groove on the side vertical plate. When the roller changing program is executed, the roller necks at two ends of the lower straightening roller 5 bear the lower surfaces of the vertical plates 3.1 at two sides of the upper roller group bracket 3, and the lower straightening roller is driven to enter/exit the rack of the row of straightening machines.
As shown in fig. 5, the automatic roll changing carriage 6 is matched with the upper roll set bracket 3 to implement an integral roll changing process. The automatic roll changing vehicle 6 has the functions of carrying a lower straightening roll 5, carrying an upper straightening roll 4 with an upper roll group bracket 3, lifting a hydraulic cylinder 7.2 by a roll changing separation platform 7, lifting the whole in the frame of the row of the straightening machine, and driving in/out by a track 7.3 on the roll changing separation platform 7.
As shown in fig. 1, the supporting roller 2 is installed in the front frame and can rotate under the action of a driving mechanism of the supporting roller; the elevation of the surface of the roller can be adjusted under the driving of the lifting mechanism of the roller. The supporting roll 2, when carrying out roll change operation procedure, adjust the top surface elevation of 2 roll surfaces of supporting roll to be in same numerical value with the top surface elevation of 5 both ends bearing roller necks of lower leveling roll, when the top surface of 2 supporting roll and the top surface of 5 bearing roller necks of lower leveling roll are located same horizontal plane promptly, carry roller group bracket 3.
As shown in fig. 6 to 10, the swing bracket 8.1, the hydraulic cylinder 8.2, the rotary trunnion 8.3, and the pin shaft 8.4 included in the upper roller group bracket positioning and locking device 8 are installed in the rear frame 9, and the positioning device 8.6, the locking device 8.7, and the distance measuring module 8.8 are installed on the swing bracket 8.1.
As shown in fig. 6 to 10, the swing bracket 8.1 is used for mounting a positioning mechanism 8.6, a locking mechanism 8.7 and a distance measuring device 8.8. The tail part of the swing bracket 8.1 is connected with the rear frame 9 through a rotary trunnion 8.3 at a fixed position of the rear frame 9; the upper station and the lower station of the swing bracket 8.1 are realized by the driving of the hydraulic cylinder 8.2. The tail end of the hydraulic cylinder 8.2 is hung on the upper part of the rear frame 9, and the end of the piston rod is hinged with the swing bracket through a pin shaft 8.4; when the hydraulic cylinder 8.2 performs telescopic motion, the swing bracket 8.1 swings around the center of a rotary trunnion 8.3 on the frame. In the roll changing operation, the swing bracket 8.1 swings and descends and is positioned at a station for positioning and locking the upper roll set bracket 3; during the straightening operation, the swing bracket 8.1 swings to the upper position and is positioned at a section steel passing straightening station.
As shown in fig. 6 to 10, the positioning mechanism 8.6 is used for longitudinal positioning of the upper roll stack carriages 3 in the row of levelers. The positioning mechanism 8.6 is arranged at the lower part of the front end of the swinging bracket 8.1 and symmetrically arranged at two sides of the center line of the swinging bracket 8.1. The positioning mechanism 8.6 comprises: the stop head 8.6.1, the sleeve 8.6.2, the spring seat (1) 8.6.3, the spring 8.6.4, the spring seat (2) 8.6.5, the backing plate 8.6.6, the nut 8.6.7 and the proximity switch (1) 8.6.8. In the roll changing operation, when the upper roll group bracket 3 enters the frame of the row of the straightening machine to be in place, the outer surface of the front end vertical plate 3.2 of the upper roll group bracket 3 is contacted with the stopper 8.6.1 of the positioning mechanism 8.6, so that the upper roll group bracket 3 is longitudinally positioned in the row of the straightening machine. The proximity switch (1) 8.6.8 is used for roughly positioning the upper roller set bracket 3; the working principle is as follows: the upper surface of a vertical plate 3.2 at the front end of the upper roller group bracket 3 is used as a sensing surface, and signals of positions of the upper surface and the lower surface of the vertical plate, which enter a rack of a row of straightening machines and reach the front end and reach a stop 8.6.1, are extracted and used as signals for triggering the transmission control of the supporting roller 2 and the transmission control of the lower straightening roller 5. Because the spring 8.6.4 is arranged in the positioning mechanism 8.6 and serves as a buffer component for the movement contact of the upper roller group bracket 3 and the stopper 8.6.1, after the upper roller group bracket 3 is in movement contact with the stopper 8.6.1, the spring 8.6.4 has a rebound phenomenon, so that the outer surface of the front end vertical plate 3.2 of the upper roller group bracket 3 is separated from the stopper 8.6.1, and after the proximity switch (1) 8.6.8 sends a signal and the lower straightening roller 5 stops rotating, the upper roller group bracket 3 is accurately positioned for the second time by using the locking mechanism 8.7.
As shown in fig. 6 to 10, the locking mechanism 8.7 cooperates with the positioning mechanism 8.6 to realize locking and positioning of the upper roller set bracket 3 in the positioning process. The locking mechanisms 8.7 are arranged on two sides of the front end positioning mechanism 8.6 of the swing bracket 8.1 and are symmetrically arranged on the center line of the swing bracket 8.1. The locking mechanism 8.7 comprises: corner cylinder 8.7.1, proximity switch (2) 8.7.4, proximity switch (3) 8.7.5. The corner cylinder8.7.1 for the position locking of the upper set of rollers carrier 3. The proximity switches (2, 3, 8, 7, 5) and 8, 7, 4, 8, 7, 5 are used for detecting the position of the corner cylinder clamping arm 8, 7, 2. The clamping arm 8.7.2 in the corner cylinder 8.7.1 has the technical characteristic of presenting two-stage motion of rotation and linear motion in the linear motion process of the piston rod 8.7.3. When the corner cylinder 8.7.1 is installed on the swing bracket, the reference 0 position is that the clamping arm 8.7.2 is in a vertical state when the piston rod 8.7.3 of the corner cylinder 8.7.1 is completely retracted into the cylinder body 8.7.4, and the proximity switch (2) 8.7.4 receives a sensing signal of the retraction position of the clamping arm 8.7.2 in the vertical state; when the piston rod 8.7.3 is completely extended out of the cylinder 8.7.4, the clamping arm 8.7.2 is in a horizontal state, and the proximity switch (3) 8.7.5 receives a sensing signal of the extended position of the clamping arm 8.7.2 in the horizontal state. When the piston rod 8.7.3 of the corner cylinder 8.7.1 returns to the initial position of the cylinder body 8.7.4 from the whole to enter a gradually extending state, the first stage makes linear motion in a vertical state, and the second stage positively rotates the clamping arm 90 from the vertical state 0 Is in a horizontal state; when the piston rod 8.7.2 of the angle cylinder 8.7.1 is in the gradually retreating state from the fully extended position in the cylinder body 8.7.4, the first stage clamping arm 8.7.2 reversely rotates 90 from the horizontal state 0 Is in a vertical state, and the second stage does linear motion in the vertical state. The locking mechanism 8.7 utilizes the technical characteristics of two-stage motion of the corner cylinder 8.7.1, and the clamping arm 8.7.2 pulls the vertical plate 3.2 at the front end of the upper roller set bracket 3 in a completely extending and vertical state, so that the inner surface of the clamping arm keeps contact with the stopper 8.6.1 of the positioning mechanism 8.6. In the process, when the upper roller group bracket 3 enters a rack of a row of straightening machines and the outer surface of a front end vertical plate 3.2 of the upper roller group bracket 3 approaches/reaches a contact surface of a stop 8.6.1 of a positioning mechanism 8.6, the upper surface (horizontal surface) of the front end vertical plate 3.2 of the upper roller group bracket 3 enters the lower part of a clamping arm 8.7.2 in a horizontal state of a corner cylinder 8.7.1 and a certain safety interval is reserved; when the clamping arm pulls the vertical plate at the front end of the upper roller group bracket, the piston rod of the corner cylinder performs retreating action, and the clamping arm 8.7.2 rotates in the reverse direction by 90 degrees in the horizontal state 0 The rear part is vertical, the corresponding surface of the clamping arm 8.7.2 and the inner surface (vertical surface) of the vertical plate 3.2 at the front end of the upper roll group bracket 3 form a certain distanceA relationship of position from the parallel surface; the corner cylinder 8.7.1 piston rod 8.7.3 continues to perform retreating action, the clamping arm continues to retreat in a vertical state, the corresponding surface of the clamping arm 8.7.1 is in contact with the inner surface (vertical surface) of the vertical plate 3.2 at the front end of the upper roller group bracket 3 and drives the upper roller group bracket 3 to move forward until the clearance between the outer surface (vertical surface) of the vertical plate 3.2 at the front end of the upper roller group bracket 3 and the contact surface of the stopper 8.6.1 of the positioning mechanism 8.6 is eliminated; at the moment, the contact surface of the clamping arm 8.7.2 and the stopper 8.6.1 of the positioning mechanism 8.6 is matched to form clamping and locking on the inner surface (vertical surface) of the vertical plate 3.2 at the front end of the upper roller group bracket 3, so that the vertical accurate positioning of the upper roller group bracket 3 in the row of the straightening machines is realized.
As shown in fig. 9, the distance measuring device 8.8 comprises: and the distance measuring module 8.8.1 and the control system 8.8.2 are used for dynamically controlling the conveying speed and the mechanism action of the upper roll group brackets 3 at different longitudinal positions in the row of the straightener in real time. The distance measuring module 8.8.1 is installed in a cavity arranged in the middle of the swing support and used for dynamically measuring the advancing/retreating real-time position of the upper roller set bracket 3, and the control system 8.8.2 implements control strategies such as different speeds, locking and the like according to the real-time position of the upper roller set bracket 3 in the row of the straightening machine reflected by the signal feedback of the distance measuring module 8.8.1.
The upper roller group bracket 3 is matched with the automatic roller changing vehicle 6, and the technological process of quickly and integrally changing all upper and lower straightening rollers of the row straightening machine is as follows:
as shown in FIG. 11, the straightening rolls on the row of the straightening machines are positioned at the straightening station; the swing bracket 8.1 is positioned at the straightening station, a piston rod 8.7.3 of a corner cylinder of the locking mechanism 8.7 is completely retracted, the clamping arm 8.7.2 is in a vertical state, and a proximity switch (2) 8.7.4 sends a signal; the wheels 6.2 of the automatic roll changing vehicle 6 fall on the roll changing separating platform track, and the lifting hydraulic cylinder 7.2 is in a retracted position.
As shown in fig. 12, the swing support 8.1 is lowered from the straightening station to the roll changing station; the upper straightening roll 3 of the row straightening machine rises to the roll changing high position.
As shown in fig. 13, the piston rod 8.7.3 of the corner cylinder 8.7.1 of the locking mechanism 8.7 is fully extended, the clamping arm 8.7.2 of the corner cylinder 8.7.1 is in a horizontal state, and the proximity switch (3) 8.7.5 sends a signal;
as shown in fig. 14, the upper roll set bracket 3 is positioned at the inlet of the in-line straightener, the distance measuring device 8.8 works, and the position tracking is carried out by utilizing the reflecting film 3.6 in the middle of the vertical plate 3.2 at the front end of the upper roll set bracket 3;
as shown in fig. 15, the supporting roll 2 and the lower straightening roll 5 of the row straightener start to rotate at a low speed, the upper roll set bracket 3 enters from the row straightener type steel inlet end, between the supporting roll 2 and the upper straightening roll 4, the lower surface of the side vertical plate 3.1 of the upper roll set bracket 3 is supported on the surface of the roll neck of the supporting roll 2 and the lower straightening roll 5, and the lower surface is driven by the supporting roll 2 and the lower straightening roll 5 to enter the rack of the row straightener; when a vertical plate 3.2 at the front end of an upper roller group bracket 3 enters a first lower straightening roller 5, rotating to increase the speed;
as shown in fig. 16, when the vertical plate 3.2 at the front end of the upper roll set bracket is close to the stopper 6.1 of the positioning mechanism, the supporting roll 2 stops rotating, and the lower straightening roll 5 slows down; the proximity switch (3) 8.7.5 holds the signal;
as shown in fig. 17, under the condition that the proximity switch (3) 8.7.5 keeps the signal, the upper surface of the vertical plate 3.2 at the front end of the upper roll set bracket 3 enters under the clamping arm 8.7.2 of the corner cylinder 8.7.1; the outer surface of the front end vertical plate 3.2 is close to and touches the stop 8.6.1 of the positioning device 8.6; the proximity switch (1) 8.6.8 senses the upper surface of a vertical plate 3.2 at the front end of the upper roller set bracket 3; the proximity switch (1) sends a signal 8.6.8; the supporting roll 2 and the lower straightening roll 5 stop rotating.
As shown in fig. 18, the clamping arm 8.7.2 of the angle cylinder 8.7.1 is driven by the piston rod 8.7.3 to rotate 90 in the reverse direction 0 Then retreating under the drive of a piston rod 8.7.3; the clamping arm 8.7.2 of the corner cylinder 8.7.1 and the stopper 8.6.1 of the positioning device 8.6 cooperate to clamp the vertical plate 3.2 at the front end of the upper roller group bracket 3 to lock and position the same.
As shown in fig. 19, the upper straightening roll 4 is lowered to a safe distance (preferably 5-10 mm) left between the surface of the supporting roll neck at both ends and the surface of the circular arc groove where the upper roll set bracket 3 is positioned;
as shown in FIG. 20, the clamp arm 8.7.2 of the corner cylinder 8.7.1 is extended vertically, forward direction 90 0 Rotate 90 0 The clamping arm 8.7.2 is horizontally positioned above a vertical plate 3.2 at the front end of the upper roller group bracket 3;
as shown in fig. 21, the swing bracket 8.1 returns to the straightening position, the clamping arm 8.7.2 in the horizontal state of the corner cylinder 8.7.1 retracts and rotates to return to the vertical state, and the proximity switch (2) sends a signal;
as shown in fig. 22, the lifting hydraulic cylinder 7.2 of the roll changing separation platform 7 is lifted, the automatic roll changing carriage 6 is lifted, and the corresponding front and rear end surfaces of the automatic roll changing carriage are in contact with the lower surface of the upper roll set bracket vertical plate 3.2 to perform automatic connection between the two;
as shown in fig. 23, the frames of the row of straighteners are separated, the frame on the operation side drives the roll-changing separating platform 7 to slide along the guide rail of the rear frame 9 to the roll-changing station, and all the upper and lower straightening rolls carried in the upper roll group bracket 3 and the automatic roll-changing vehicle 6 are respectively separated from the self three-section assembling combined roll system structure along the axial direction;
as shown in fig. 24, when the frame on the operating side reaches the roll changing station, the rail 7.3 of the roll changing separating platform 7 is automatically butted with the fixed rail on the ground; a lifting hydraulic cylinder 7.2 of the roll changing separation platform 7 descends, and an automatic roll changing vehicle 6 falls onto a track 7.3 of the roll changing separation platform;
as shown in fig. 25, under the condition of meeting the item (14), the upper roll set bracket 3 and the automatic roll changing carriage 6 carry the old straightening roll to run out, and the upper roll set bracket 3 carrying the new straightening roll and the connecting body of the automatic roll changing carriage 6 run into the track of the roll changing separation platform 7.3 and are centered;
as shown in FIG. 25, the rack on the operation side of the row straightener drives the roll changing separation platform 7 to carry the upper roll group bracket 3 of the new straightening roll and the automatic roll changing vehicle 6 to return to the straightening station, and then other corresponding programs are executed, so that the automatic integral replacement of all the new straightening rolls and all the old straightening rolls in the row straightener is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (3)
1. A method for changing rollers of an upper roller set bracket is characterized in that: the method comprises the following steps:
1) The automatic roll changing vehicle is arranged in the in-row straightening machine, wheels of the automatic roll changing vehicle are located on a track of the roll changing separation platform, and a non-bearing structure of the automatic roll changing vehicle does not interfere with the rotation of the lower straightening roll;
2) When an automatic connection program between the upper roll group bracket and the automatic roll changing vehicle needs to be executed, the automatic roll changing vehicle is lifted upwards by a lifting hydraulic cylinder on the roll changing separation platform, and the roll neck of the lower straightening roll is matched with the corresponding arc-shaped groove structure of the automatic roll changing vehicle to form a supporting condition for the lower straightening roll;
3) The upper roller group bracket is positioned at the inlet end of the row of the straightening machines; an upper roller group bracket is arranged between an upper straightening roller group and a lower straightening roller group and drives into a rack of the row straightener by means of the bearing and the driving of a supporting roller surface in a front rack at the inlet end of the row straightener and a lower straightening roller neck of the row straightener;
4) The upper roll group bracket is accurately positioned in the rack of the row of straightening machines under the control of the positioning and locking device;
5) The upper straightening roll group integrally descends by a preset height; the automatic roll changing vehicle lifts upwards under the action of a lifting hydraulic cylinder of the roll changing separation platform, and the upper roll group bracket is automatically spliced and connected with the automatic roll changing vehicle;
6) The frames of the rows of straightening machines are separated, the roll changing separation platform is pushed to a roll changing station along a guide rail along with the operation side frame, after an upper rail of the roll changing separation platform is in butt joint with a ground fixed rail, an upper roll group bracket and all old straightening rolls carried on an automatic roll changer are horizontally moved out of the rail of the roll changing separation platform of the rows of straightening machines to the ground fixed rail, the upper roll group bracket carrying all new straightening rolls and the automatic roll changer are driven into the rails of the roll changing separation platform of the rows of straightening machines in a roll changing state from the ground fixed rail, and the whole replacing process of the new straightening rolls and the old straightening rolls is completed;
the positioning and locking device comprises: a rear frame; the swing bracket is hinged in the rear rack through a pin shaft, the tail part of the hydraulic cylinder is arranged on the rear rack, and the free end of the piston rod side is hinged on the swing bracket so as to control the swing bracket to swing up and down in the rear rack; the upper roller group bracket monitoring module is used for monitoring that the upper roller group bracket reaches a preset position and then starting the locking device to lock the upper roller group bracket;
the swing bracket is driven by a hydraulic cylinder to realize the swing of an upper station and a lower station of the swing bracket; in the roll changing operation, the swing bracket swings and descends and is positioned at a station for positioning and locking the upper roll set bracket; during straightening operation, the swing bracket swings to the upper position and is positioned at a station where the section steel is straightened;
a positioning mechanism is arranged on one side of the swinging bracket facing the front rack, and the positioning mechanism is installed on the lower part of the front end of the swinging bracket and symmetrically arranged on two sides of the center line of the swinging bracket;
in the roll changing operation, when the upper roll group bracket enters the rack of the straightener in a row in place, the outer surface of the front end vertical plate of the upper roll group bracket contacts with the stop head of the positioning mechanism, so that the upper roll group bracket is longitudinally positioned in the straightener in a row.
2. An upper roll stack carrier roll changing method as in claim 1 wherein said upper roll stack carrier comprises: the device comprises a side vertical plate, a front end vertical plate, a rear end vertical plate, a cross beam and a positioning block; the side vertical plates on the two sides are connected with the front end vertical plate, the rear end vertical plate and the cross beam to form a rectangular frame type structure; the lower bottom surfaces of the side vertical plates on two sides of the upper roll group bracket are supported on the roll surface of the supporting roll and roll necks at two ends of the lower straightening roll when entering the row of straightening machine; when the supporting rollers and the lower straightening rollers rotate, the brackets of the upper roller group are driven to drive into the racks of the row of straightening machines;
the upper surface of the side vertical plate at the two sides of the upper roll group bracket is provided with a plurality of arc-shaped groove structures which are used for enabling the upper straightening roll to fall and supporting roll necks at the two ends of the upper straightening roll to be positioned; the arc surface of the groove structure is matched with the outer diameter of the supporting roll necks at the two ends of the upper straightening roll; the circle centers of all the circular arc-shaped grooves are on the same horizontal straight line; the side vertical plates at two sides of the upper roller group bracket are provided with an inclined plane structure near the front end vertical plate, and positioning blocks are arranged near the rear end vertical plate and used for positioning relative to the automatic roller changing vehicle.
3. The upper roll set bracket roll changing method according to claim 1 wherein the locking mechanisms are mounted on opposite sides of the swing bracket front end positioning mechanism and are symmetrically disposed about the swing bracket center line; the locking mechanism includes: the corner cylinder, the second proximity switch and the third proximity switch;
when the corner cylinder is arranged on the swing support, the reference 0 position is that the clamping arm is in a vertical state when a piston rod of the corner cylinder is completely retracted into the cylinder body, and the second proximity switch receives a sensing signal of the retraction position of the clamping arm in the vertical state; when the piston rod is completely extended out of the cylinder body, the clamping arm is in a horizontal state, and the third proximity switch receives a sensing signal of the extension position of the clamping arm in the horizontal state;
when the piston rod of the corner cylinder enters a gradually extending state from the initial position of all the returned cylinder bodies, the first stage makes linear motion in a vertical state, and the second stage positively rotates the clamping arm 90 degrees from the vertical state 0 Is in a horizontal state; when the piston rod of the corner cylinder is in a gradually retreating state from the position where the piston rod of the corner cylinder is fully extended out of the cylinder body, the first-stage clamping arm reversely rotates 90 from the horizontal state 0 The second stage moves linearly in the vertical state;
when the upper roller group bracket enters the rack of the row straightening machine and the outer surface of the front end vertical plate of the upper roller group bracket approaches/reaches the contact surface of the stop head of the positioning mechanism, the upper surface of the front end vertical plate of the upper roller group bracket enters the lower part of the clamping arm of the corner cylinder in a horizontal state and a certain safety interval is reserved; when the clamping arm pulls the vertical plate at the front end of the upper roller group bracket, the piston rod of the corner cylinder performs retreating action, and the clamping arm rotates in the reverse direction by 90 degrees in a horizontal state 0 The back part is vertical, and the corresponding surface of the clamping arm and the inner surface of the vertical plate at the front end of the upper roller group bracket form a parallel surface position relation with a certain distance; the piston rod of the corner cylinder continuously executes the retreating action, the clamping arm continuously retreats in the vertical state, the corresponding surface of the clamping arm is in contact with the inner surface of the vertical plate at the front end of the upper roller set bracket and drives the upper roller set bracket to move forwards until the appearance of the vertical plate at the front end of the upper roller set bracket is eliminatedA gap between the surface and the contact surface of the positioning mechanism stopper; at the moment, the contact surfaces of the clamping arms and the stoppers of the positioning mechanism are matched to clamp and lock the inner surface of the vertical plate at the front end of the upper roller group bracket, so that the upper roller group bracket is accurately positioned in the row of the straightening machines in the longitudinal direction.
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| CN202011381501.0A CN112808794B (en) | 2020-11-30 | 2020-11-30 | Upper roller set bracket positioning and locking device and roller changing method |
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| CN202011381501.0A CN112808794B (en) | 2020-11-30 | 2020-11-30 | Upper roller set bracket positioning and locking device and roller changing method |
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| CN105382030B (en) * | 2015-12-14 | 2018-02-23 | 安徽楚江特钢有限公司 | A kind of work roll changing method of milling train |
| CN107214214A (en) * | 2017-07-31 | 2017-09-29 | 石横特钢集团有限公司 | A kind of section straightener smoothing roll integral replacement device |
| CN109290454A (en) * | 2018-09-27 | 2019-02-01 | 天津市中重科技工程有限公司 | A kind of straightener concentrates roll changing system and concentrates roll-changing method |
| CN210586395U (en) * | 2019-07-11 | 2020-05-22 | 武汉乾冶众联科技有限公司 | Continuous rolling mill outlet pinch roll device |
| CN111760937B (en) * | 2020-07-28 | 2022-05-17 | 太原科技大学 | Multi-wire hole type section steel straightening machine capable of quickly changing rollers |
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2020
- 2020-11-30 CN CN202011381501.0A patent/CN112808794B/en active Active
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