CN112808794A - 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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- CN112808794A CN112808794A CN202011381501.0A CN202011381501A CN112808794A CN 112808794 A CN112808794 A CN 112808794A CN 202011381501 A CN202011381501 A CN 202011381501A CN 112808794 A CN112808794 A CN 112808794A
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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
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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 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 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 group bracket positioning and locking device and a roll changing method of a row straightener, in particular to an upper roll group bracket positioning and locking device and a roll changing method of an operation side frame movable high-rigidity small section steel row straightener.
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 roller system and the lower straightening roller system are both of three-section type assembling combined structures formed by bearing seats at two ends and a straightening roller positioned 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 roller is positioned in the middle of the rack, when the rack is separated and is in a roller changing operation state, the upper straightening roller and the lower straightening roller can be integrally moved out of the rack by means of the upper roller group bracket and the automatic roller changing vehicle after being separated from the roller system structure along the axial direction.
Before the roll changing process begins, the straightening operation is in an end state; the automatic roll changing vehicle is arranged in the in-row straightening machine, 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 lifted upwards by a lifting hydraulic cylinder on the roll changing separation platform, and the bearing shaft necks of the lower straightening rolls are matched with the corresponding arc-shaped groove structures of the automatic roll changing carts to form the supporting conditions for the lower straightening rolls.
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 arranged between an upper straightening roller group and a lower straightening roller group and drives into a rack of the row straightening machine to be positioned by depending on the bearing and the driving of a supporting roller surface in a front rack at the inlet end of the row straightening machine and the bearing and the driving of a lower straightening roller neck of the row straightening machine; when necessary procedures such as integral descending of an upper straightening roll group by a preset height, upward jacking of an automatic roll changing vehicle under the action of a hydraulic cylinder ascending and descending of a roll changing separation platform, automatic splicing and connection of an upper roll group bracket and the automatic roll changing vehicle are executed, when a rack of the in-row straightening machine is separated, the roll changing separation 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 separation 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 integrally horizontally moved out from the rail of the in-row straightening machine roll changing separation platform 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 in-row straightening machine rack roll changing separation platform in a roll changing state from the ground fixed rail, and the whole 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 integral automatic roll changing process is the accurate positioning of the profile steel advancing direction (or called as longitudinal direction) of the upper roll group bracket in the frame of the row of the straightening machine. In the process of guiding the upper roll group bracket into the rack of the row of the 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 of the straightener, the height coordinate of the top of the supporting roll surface can be preset, 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 of the rack of the row of the straightener is not changed all the time; therefore, after the upper roll group bracket enters the row of straightening machines, 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 rolls and the automatic roll changing vehicle, which are consistent with the designed roll changing operation requirement, between the upper roll group bracket and the upper straightening rolls 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 row 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 integrally horizontally moved out of the rail of the roll changing separation platform of the row 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 rail of the roll changing separation platform of the frame of the row of straightening machines in a roll changing state from the ground fixed rail, and the process of integrally changing 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 of a supporting roll and a roll surface of a lower straightening roll of the row straightening machine when driving in/out of the row straightening machine; 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 the 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 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 the 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 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 component, the front end vertical plate of the upper roller set bracket has the main function of being defined as a positioning component matched with the locking device.
The roll neck structures at the two ends of the upper straightening roll are matched with the circular arc grooves on the side vertical plates at the 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 circle center of the arc 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.
The swing support, the hydraulic cylinder, the rotary trunnion and the pin shaft which are contained in 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 by 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 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.
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 to swingThe frame central lines are symmetrically arranged. 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; under the state that the piston rod is totally stretched out of the cylinder body, the clamping arm is in a horizontal state, and the proximity switch 3 receives a sensing signal of the stretching 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 state0Is 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 state0Is 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 in a completely extending and vertical state, so that the inner surface of the locking mechanism is kept 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 state0The 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 continues to perform 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 roll group bracket and drives the upper roll group bracket to move forwards until the gap between the outer surface (vertical surface) of the vertical plate at the front end of the upper roll 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 accurately positioned in the row of the straightener in the longitudinal direction.
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 implements control strategies of different speeds, locking and the like according to 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.
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 roller changing vehicle fall on the roller changing separation platform track, and the lifting hydraulic cylinder of the automatic roller 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 roller group bracket is positioned at the inlet of the row of the straightener, 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 roller group bracket;
5) the supporting roll and the lower straightening roll of the row of straightening machines start to rotate at a low speed, the upper roll group bracket enters from the steel inlet end of the row of straightening machines, the lower surface of a 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 between the supporting roll and the upper straightening roll, and the supporting roll and the lower straightening roll drive the upper roll group bracket to enter a rack of the row of straightening machines; 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 proximity 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 900Then 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 5-10mm) 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 extends out in a vertical state and is in a positive direction of 90 DEG0Rotate 900The clamping arm is horizontally positioned above a vertical plate at the front end of the upper roller group bracket;
11) the swing support 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 the vertical plate of the upper roll group bracket to automatically connect the front end surface and the rear end surface of the automatic roll changing vehicle;
13) the frames of the row of the straightening machines are separated, the frame on one operation side drives the roll changing separation platform to slide to a roll changing station along a frame guide rail, and all the upper and lower straightening rolls carried in the upper roll group bracket and the automatic roll changing vehicle are respectively separated from the self three-section type assembling combined roll system structure along the axial direction;
14) when the rack 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) and the rack on the operation side of the in-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 and old straightening rolls in the in-row straightener is realized.
The invention aims at the problem of positioning of an upper roll group bracket in the advancing direction (or called as longitudinal direction) of profile steel in a rack of a row straightener in the process of integrally replacing the roll of the row straightener by adopting the upper roll group bracket to be matched with an automatic roll replacing vehicle, and after the upper roll group bracket enters the row straightener, 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 straightener, so that the relative position between the upper roll group bracket and a straightening roll is ensured under the roll replacing operation state that the mutual position between the upper roll group bracket and the upper straightening roll meets the design requirement, and the roll necks of the whole upper straightening roll group are ensured to correctly fall into the set bearing position on the upper roll group bracket; 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 an upper roll set bracket positioning and locking device and a roll changing process of 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 swing frame at the 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 detent locking mechanism 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, proximity switch K3 signaled, and the clamp arm horizontal;
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 the upper roll stack carriage front end contacting the positioning device stop, signaling a K1 approach, and the lower leveling roll stalls;
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 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; 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. The upper roller group bracket 3 is supported by the roller surface of the supporting roller 2 and the roller surface of the lower straightening roller 5 of the row straightening machine when driving in/out of the row straightening machine; 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 device comprises a side vertical plate 3.1, a front end vertical plate 3.2, a rear end vertical plate 3.3, a cross beam 3.4, a positioning block 3.5, a reflecting film 3.6 and a base 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 surfaces of the side vertical plates 3.1 at the two sides of the upper roll group bracket are provided with a plurality of circular arc groove structures which are used for enabling the upper straightening rolls 4 to fall and positioning roll necks at the two ends of the upper straightening rolls; 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 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 roll changing procedure is executed, roll necks at two ends of the lower straightening roll 5 support lower surfaces of vertical plates 3.1 at two sides of the upper roll group bracket 3 and drive the lower straightening roll 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 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 frame 9 at a fixed position of the frame 9 through a rotary trunnion 8.3; 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 at the upper part of the 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: stop 8.6.1, sleeve 8.6.2, spring holder (1)8.6.3, spring 8.6.4, spring holder (2)8.6.5, backing plate 8.6.6, nut 8.6.7, 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 straightener 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 straightener. The proximity switch (1)8.6.8 is used for coarse positioning of the upper roller group bracket 3; the working principle is as follows: the upper surface of the vertical plate 3.2 at the front end of the upper roller group bracket 3 is used as a sensing surface, and signals of the position where the upper roller group bracket enters the rack of the row of straightening machines to reach the front end and reach the 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 upper roller group bracket 3 to be in motion contact with the stopper 8.6.1, after the upper roller group bracket 3 is in motion 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 therefore, 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 secondarily and accurately positioned by 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 achieve 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 and proximity switch (3) 8.7.5. The corner cylinder 8.7.1 is used for position locking of the upper roll set bracket 3. The proximity switches (2)8.7.4 and (3)8.7.5 are used for detecting the position of the corner cylinder clamping arm 8.7.2. The clamp arm 8.7.2 of the corner cylinder 8.7.1 has the technical characteristic of exhibiting two-stage motion of rotation and linear motion during linear motion of the piston rod 8.7.3. When the corner cylinder 8.7.1 is mounted 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 8.7.4, and the proximity switch (2)8.7.4 receives a sensing signal of the retracted position of the clamping arm 8.7.2 in the vertical state; in a state where the piston rod 8.7.3 is fully extended out of the cylinder 8.7.4, the clamp arm 8.7.2 is in a horizontal state, and the proximity switch (3)8.7.5 receives a signal indicating the extended position of the clamp arm 8.7.2 in the horizontal state. When the piston rod 8.7.3 of the corner cylinder 8.7.1 enters a gradually extending state from the initial position of the all-retracted cylinder 8.7.4, the first stage moves linearly in the vertical state, and the second stage rotates the clamp arm 90 forward from the vertical state0Is in a horizontal state; when the piston rod 8.7.2 of the angle cylinder 8.7.1 is brought into a gradually retreated state from a position where it is fully extended from the cylinder 8.7.4, the first-stage clamp arm 8.7.2 is reversely rotated 90 from a horizontal state0Is in a vertical state, and the second stage does linear motion in the vertical state. The locking mechanism 8.7 utilizes the technical characteristic 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 group bracket 3 in a completely extending vertical stateAnd moved so that its inner surface remains in contact with the detent 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 the contact surface of a stopper 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 the 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 reverse 90 directions in a horizontal state0The rear part is in a vertical state, and 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 roller group bracket 3 form a parallel surface position relation with a certain distance; the piston rod 8.7.3 of the corner cylinder 8.7.1 continues to retreat, the clamping arm continues to retreat in a vertical state, the corresponding surface of the clamping arm 8.7.1 contacts 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 forwards 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 this time, the contact surface of the clamping arm 8.7.2 and the stopper 8.6.1 of the positioning mechanism 8.6 are 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 longitudinal accurate positioning of the upper roller group bracket 3 in the row straightener 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 bracket 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 group 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 group bracket 3 in the row of the straightener 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 a 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 bracket 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 group bracket 3 enters from the steel inlet end of the row straightener, 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 group 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 frame of the row straightener; when a vertical plate 3.2 at the front end of the upper roller group bracket 3 enters a first lower straightening roller 5, rotating and accelerating;
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; proximity switch (3)8.7.5 hold 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 roller 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 group bracket 3; the proximity switch (1)8.6.8 signals; the back-up roll 2 and the lower straightening roll 5 stop rotating.
As shown in fig. 18, the clamp arm 8.7.2 of the angle cylinder 8.7.1 is first rotated 90 in the opposite direction by the piston rod 8.7.30Then retreated by the piston rod 8.7.3; the clamping arm 8.7.2 of the corner cylinder 8.7.1 cooperates with the stopper 8.6.1 of the positioning device 8.6 to clamp the front end plate 3.2 of the upper roller set bracket 3 to be locked and positioned.
As shown in fig. 19, the upper straightening roll 4 is lowered to a safe distance (preferably 5-10mm) 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 extends vertically in a forward direction 900Rotate 900The clamping arm 8.7.2 is horizontally positioned above the 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 horizontal clamping arm 8.7.2 of the corner cylinder 8.7.1 retracts and rotates back 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 separation platform 7 to slide along the frame guide rail 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 carriage 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 on 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 automatic roll changing carriage 6 connecting body run into the track of the roll changing separating platform 7.3 and are centered;
as shown in FIG. 25, the rack on the operation side of the in-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 carriage 6 back to the straightening station, and then other corresponding procedures are executed, thereby realizing the automatic integral replacement of all the new and old straightening rolls in the in-row straightener.
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 (6)
1. The utility model provides an go up roller set bracket location locking device which characterized in that: 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 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.
2. An upper roll set bracket roll changing method 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 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 row 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 integrally horizontally moved out of the rail of the roll changing separation platform of the row 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 rail of the roll changing separation platform of the frame of the row of straightening machines in a roll changing state from the ground fixed rail, and the process of integrally changing the new straightening rollers and the old straightening rollers is completed.
3. A method of changing a roll of an upper roll set forth in claim 2 wherein said upper roll set carrier 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 the two sides are connected with the front end vertical plate, the rear end vertical plate and the cross beam to form a cuboid frame type structure; the lower bottom surfaces of the side vertical plates on the two sides of the upper roll group bracket are supported on the roll surface of the supporting roll and roll necks at the two ends of the lower straightening roll when entering the row 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.
4. The upper roll set bracket roll changing method according to claim 2 wherein said rocking arm is driven by a hydraulic cylinder to effect two upper and lower stations of the rocking arm; 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.
5. An upper roll set bracket roll changing method as claimed in claim 2 wherein a positioning mechanism is provided on a side of the swing frame facing the front frame, the positioning mechanism being mounted to a lower portion of a front end of the swing frame so as to be symmetrically disposed on both sides of a center line of the swing frame;
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.
6. An upper roll stack carrier roll changing method as claimed in claim 5 wherein said locking mechanisms are mounted on opposite sides of said swing bracket front end positioning mechanism and symmetrically disposed about said swing bracket centerline; the locking mechanism includes: the device comprises a corner cylinder, a proximity switch (2) and a proximity switch (3);
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; under the condition that the piston rod is completely extended out of the cylinder body, the clamping arm is in a horizontal state, and the proximity switch (3) 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 clamps the arm to rotate forward by 90 degrees from the vertical state to be 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 extends out of the cylinder body, the clamping arm rotates reversely by 90 degrees from a horizontal state to be in a vertical state in a first stage, and the clamping arm moves linearly in the vertical state in a second stage;
when the upper roller group bracket enters a rack of a row of straightening machines and the outer surface of a front end vertical plate of the upper roller group bracket approaches/reaches a stop contact surface of a positioning mechanism, the upper surface (horizontal surface) of the front end vertical plate of the upper roller group bracket enters the lower part of a clamping arm of a 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 roll set bracket, the piston rod of the corner cylinder performs retreating action, the clamping arm in a horizontal state rotates reversely by 90 degrees and then is in a vertical state, 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 set 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 (vertical 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 clearance between the outer surface (vertical surface) of the vertical plate at the front end of the upper roller set 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 accurately positioned in the row of the straightener 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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