KR100782694B1 - An apparatus for protecting the impact of center of main shaft base in a roll grinder - Google Patents

Abstract

The present invention relates to a device for preventing the collision of the headstock center.

The present invention includes a plurality of housings (11) in which fluid is filled on one side of the spindle (138) of the headstock (110) corresponding to one end of the roll, and are assembled to be reciprocally movable in the respective housings (11). A contact portion (10) provided with a contact plate (13) on the rod (12a) of one piston (12) in contact with one end of the roll to absorb shock; The second and third pistons 32 and 33 which are operated by the contact pressure generated when the roll and the contact plate 13 are in contact with the housings 31 connected to the respective housings 11 are provided. A pressure regulating unit 30 for adjusting the pressure in the housing 11; And controlling the operation of the pump member 52 to maintain a constant internal pressure of the main body housing 31 based on the measured value of the pressure sensor 37 for detecting the internal pressure of the main body housing 31. It provides a headstock collision preventing device of a roll polishing machine including a hydraulic portion (50).

Roll polishing machine, center, piston, contact pressure, housing, pressure sensor

Description

Axis Applicator Center Anti-collision Device of Roll Grinding Machine {AN APPARATUS FOR PROTECTING THE IMPACT OF CENTER OF MAIN SHAFT BASE IN A ROLL GRINDER}

1 is a schematic view showing a typical roll grinding machine,

Figure 2 is a schematic view showing a main shaft center collision avoidance device of the roll polishing machine according to the present invention,

3 is an assembled perspective view showing a contact portion employed in the headstock center collision preventing device of the roll polishing machine according to the present invention,

Figure 4 is an exploded perspective view showing a contact portion employed in the headstock center collision avoidance device of the roll polishing machine according to the present invention,

Figure 5 (a) (b) is an exploded, assembled cross-sectional view showing a pressure control unit employed in the headstock center collision prevention device of the roll polishing machine according to the present invention,

Figure 6 (a) (b) is a state of use of the headstock center collision avoidance device of the roll polishing machine according to the present invention.

 Explanation of symbols on the main parts of the drawings

11 .... Housing 12 .... First piston

13 .... contact plate 14 .... base

17 .... Ball members 31 .... Body housing

32 .... Second piston 33 .... Third piston

34 .... Cover member 35 .... Guide housing                 

36a ... bellows pipe 36b ... spring member

51 .... check valve 53 .... relief valve

The present invention relates to a device for preventing an impact transmitted to the center side of the spindle head constituting the roll grinding machine, and more particularly, to prevent a direct collision between the roll and the headstock center when setting the roll between the headstock and the tailstock The present invention relates to an anti-collision device of a roll grinding machine, which can prevent damage to parts, improve durability, and prevent vibration during roll polishing, thereby preventing equipment accidents during roll polishing.

In general, the roll used in the hot rolling process of the steel mill is large and heavy, so that the roll surface is polished in a dedicated roll polishing machine. The roll surface polishing using the roll polishing machine 100 is performed. As shown in Figure 1, first, the wire rope 124 connected to the hook (120) of the crane (not shown) to the left and right both ends of the roll to be polished.

And, in the state that the left and right both ends of the roll hooked to the crane are disposed in the center 124 of the tail stock 110a facing the center 114 of the headstock 110 of the roll polishing machine 100, respectively The horizontal tailstock 110a is horizontally moved on a bed so that the center hole 116 formed on one side of the roll is in close contact with the center 114 of the headstock 110, and is supported while preventing the lower sag of the roll. After supporting and setting the journal portion 118 of the roll as a vibration stand (not shown), which is a dustproof port, polishing is performed.

However, since the roll is set to the crane in the roll setting operation before the roll grinding operation, the shake is transmitted to the roll when the hook 120 is shaken, so that the center 114 of the headstock 110 is moved. The strong shock is strongly transmitted to the center, and even when the center hole 116 of the roll is brought into close contact with the center 114 by the horizontal movement of the tailstock 110a, it is strong against the center 114 of the headstock 110. The shock is transmitted.

When such an impact is repeatedly transmitted strongly to the center 114 of the headstock 110, the center 114 and the spindle 138, the spindle stock plate 132, the spindle 138 mounted at the tip thereof, the spindle 138 And a bolt 134 for fastening the clamp plate 136 and the spindle 138 to the clamp plate 136 which fastens the spindle stock plate 132 and the spindle plate 132 is broken, thereby stopping the roll polishing operation. There was this.

In addition, the impact is applied to the driven pulley 112 which is assembled to the spindle 138 via the bearing 130, thereby impacting the drive pulley 140 of the drive shaft 140a for transmitting power through the V-belt. This causes the heat between the driven and driven pulleys 112 and 140 to be displaced, thereby causing the V-belt to transmit the rotational force to be burned out prematurely, in particular, causing a vibration phenomenon during polishing, resulting in poor roll polishing. If it was, the roll was used as a cause of lowering the quality of the steel sheet product is rolled.

In FIG. 1, reference numeral 151 denotes a dolly that is rotated together with the driven pulley 112, and 152 is a dolly fitting lip that is coupled to the dolly 151 to enable one-way rotation of the roll.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the object of which is to prevent a direct collision between the roll and the headstock center when the roll is set between the headstock and the tailstock in the roll polishing operation Prevents damage to the components that make up the headstock, improves durability, prevents shaking during roll polishing, prevents equipment accidents during roll polishing, and prevents the collision of the headstock center of roll grinding machines, which can improve the quality of rolled products. To provide a device.

As a technical configuration for achieving the above object, the present invention,

In the device for grinding the roll surface by placing a roll between the main shaft and the tailstock,

A plurality of housings filled with fluid are provided on one end of the spindle and a spindle side surface of the spindle, and a contact plate is provided on the rod of the first piston that is reciprocally assembled in each of the housings so as to contact the one end of the roll. A contact portion to absorb the impact;

A pressure regulating unit having a second piston and a third piston which are operated by a contact pressure generated when the roll and the contact plate are in contact with the respective housings in communication with the respective housings; And

The headstock of the roll polishing machine, characterized in that it comprises a hydraulic unit for controlling the operation of the pump member to maintain the internal pressure of the main body housing on the basis of the measured value of the pressure sensor for detecting the internal pressure of the main body housing. By providing a center anti-collision device.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing the headstock center collision preventing device of the roll polishing machine according to the present invention, Figure 3 is an assembly perspective view showing the contact portion employed in the headstock center collision preventing device of the roll polishing machine according to the present invention, Figure 4 is an exploded perspective view showing the contact portion employed in the headstock center collision preventing device of the roll polishing machine according to the present invention, Figure 5 (a) (b) is the headstock center collision preventing device of the roll polishing machine according to the present invention Figure 6 is a disassembled, assembled cross-sectional view showing the pressure control unit is employed, Figure 6 (a) (b) is a state diagram of the main shaft center collision prevention device of the roll grinding machine according to the present invention.

The apparatus 1 of the present invention, as shown in Figures 2 to 6 (a) (b), between the headstock 110 and tailstock 110a of the roll grinder 100 to perform surface polishing of the rolls. During the setting operation of horizontally mounting the left and right ends of the roll, the components of the roll polishing machine are caused by the impact force generated when the one end of the roll and the headstock 110 collide with each other while being hooked to the hook 120 of the crane. By preventing this from being damaged, this apparatus 1 is comprised of the contact part 10, the pressure regulation part 30, the hydraulic part 50, etc.

That is, the contact portion 10 which contacts the end portion of the roll so as to absorb the shock when the impact with the one end of the roll is to be filled with fluid on one side of the spindle 138 installed on the headstock 110 corresponding to each other It is provided with a plurality of cylindrical housings 11 having a predetermined size so that the plurality of housings 11 are arranged at equal intervals in the circumferential direction around the center 114 of the headstock 110.                     

At this time, in the embodiment of the present invention, the housing 11 is shown installed by installing four at 90 ° intervals, but is not limited to this, eight at 45 ° intervals, two at 180 ° intervals, three at 120 ° intervals. It can be installed freely.

Each of the housings 11 has a first piston 12 to enable reciprocating movement, and the front end of the first piston 12 has a disc shape in which impact force generated while directly contacting one end of the roll is transmitted. A contact plate 13 is provided, and the center portion of the contact plate 13 corresponding to each other with the center 114 is formed so that there is no direct interference with the center 114.

One end outer peripheral surface of the housing 11 is detachably assembled to the outer surface of the spindle 138 as a bolt member 14a, and assembled with the female threaded portion 14c of the base 14 on which the fluid supply line 14b is formed. Guide cover 15 formed with a male screw portion 11a so as to penetrate the guide hole 15a for reciprocatingly supporting the rod 12a of the first piston 12 at the other end of the housing 11. While detachably assembling, the outer surface is formed through the air vent (11b) so that the air inlet, outflow of the housing (11) freely in and out of the housing 11 during the reciprocating operation of the first piston (12).

Here, a plurality of O-ring members 12b are mounted on the O-ring groove 12c formed on the outer circumferential surface of the first piston 12 so as to be in close contact with the inner circumferential surface of the housing 11 and the outer circumferential surface of the guide cover 15. The O-ring member 15b is also assembled to the O-ring groove 12c formed in the housing 11 so as to be in close contact with the inner circumferential surface of the housing 11 so that the fluid does not flow out, and the rod 12a and the guide of the first piston 12 are assembled. The O-ring member 25d is installed between the inner holes 15a of the cover 15 so that fluid such as oil does not leak out. Further, a U-packing 15e is also provided between the plate 15f and the guide cover 15 mounted at the end of the guide cover 15.

In addition, a spherical ball member 17 is detachably assembled to the male threaded portion 12d formed on the rod 12a of the first piston 12, and the ball member 17 has an internal bush 16a therein. It is rotatably assembled between the spacer 16 and the outer spacer 18 having the outer bush 18a, and the inner and outer spacers 16 and 18 are fastened to be inserted from the outside of the contact plate 13. It is assembled to the member. Accordingly, when the first piston 12 is guided in the housing 11 by an external force generated by contacting one end of the roll with one side of the contact plate 13, the housing 11 and the first agent are formed. The contact plate 13 may be inclined finely so that one piston 12 is not bent.

Here, the inner and outer bushes 16a and 18a are preferably made of the same material so as to smoothly flow with the ball member 17 sandwiched therebetween.

In addition, the pressure adjusting unit 30 for adjusting the pressure in the housing 11 has a plurality of circumferentially mounted in the circumferential direction around the center 114, the spindle 138 is fixedly mounted on one side by a fastening member 114a. And a cylindrical body housing 31 connected in communication with each other via the hose 14 and the socket 14 of the fluid supply line 14b formed in the base 14 of each housing 11. An internal space of the 31 is provided with a second piston 32 which is lowered by a contact pressure generated when the roll and the contact plate 13 are in contact, and the second piston 32 is the main body housing 31. Up and down operation by the up and down operation of the third piston 33 to be assembled in.

Here, the cover member 34 having a plurality of guide holes 34b formed therethrough is assembled at the upper end of the main housing 31 as the fastening member 34a, and the fastening members 35a are adapted to the respective guide holes 34b. Each guide rod 32a of the second piston 32 is assembled to be vertically flowable in the cylindrical guide housing 35 that is assembled as an upper side, and an upper end of each of the guide housings 35 and one end of the housing 11 and one end. The cover member 35b which has the socket 35c to which the other end of this connected hose member 14d is connected is comprised.

Here, each end of the guide rod 32a is equipped with an O-ring member 32b so as to increase the adhesion to the inner peripheral surface of the guide housing 35, assembled between the guide housing 35 and the cover member 35b. Another O-ring member 32c and a packing member are mounted to seal the site, and the O-ring member 33a is also provided to increase the adhesion between the outer circumferential surface of the third piston 33 and the inner circumferential surface of the body housing 31. Is fitted.

In addition, a bellows pipe 36a is provided between the second piston 32 and the third piston 33 to always elastically support the second piston 32 upward, and the third piston 33 and the main body are provided. Between the bottom surface of the housing 31 is provided with a spring member 36b for elastically supporting the third piston 33 to the upper end, the body housing 31 near the lower outer peripheral surface of the main body housing 31 The pressure detection sensor 37 is mounted to detect the internal pressure of the pressure sensor 37, and the pressure detection sensor 37 is mounted on the sensor hole 37a formed on the lower outer circumferential surface of the main body housing 31.

On the other hand, the hydraulic unit 50 is the pump member 52 to vary the pressure in the body housing 11 based on the measured value of the pressure sensor 37 for detecting the internal pressure of the body housing 31. By controlling the operation of the valve, a check valve for supplying the fluid generated in the pump member 52 in one direction to the socket (38b) of the mounting hole (38a) penetrated to the lower outer peripheral surface of the main body housing (31) A fluid supply line 51a having 51 is installed.

When the internal pressure of the main body housing 31 is 20% higher than the set pressure, a fluid such as an oil is inserted into the socket 38d of the other mounting hole 38b penetrating the lower outer peripheral surface of the main body housing 31. The fluid discharge line 51b having a relief valve 53 is connected to be configured to discharge the gas to the tank 54 side.

The operation of the present invention having the configuration as described above will be described.

First, the roll to be surface polished is hooked to the hook 120 of the crane (not shown) as a wire rope 124 to be disposed between the headstock 110 and tailstock 110a of the roll polishing machine 100. While being transported, the center 114 of the headstock 110 and the center hole 116 formed on one side end surface (left end in the drawing) of the roll are set to correspond to each other.

One side end of the roll during such setting operation collides with the contact plate 13 protruding outward from the center 114 of the main shaft 110, and the contact plate 13 by the external force generated at this time The plurality of first pistons 12 mounted at the tip of the rod 12a are configured to move along the inner circumferential surface of the housing 11 in which fluid such as oil is filled in the inner space and to generate contact pressure with the housing 11. It communicates with the guide housing 35 in communication.

Here, the spherical ball member is assembled between the inner and outer bushes 16a and 18a between the contact plate 13 and the rod 12a even when one end of the roll is in contact with one side of the contact plate 13. Since it is connected via (17) and can be inclined finely, the first piston 12 can be moved toward the spindle 138 without bending of the housing 11 and the first piston 12. .

In addition, the internal pressure of the main body housing 31 is detected by the pressure detecting sensor 37, before the contact pressure generated by the contact between the roll and the contact plate 13 is detected to the main housing 31 side. If the internal pressure is lower than the predetermined pressure 10kg / ㎠, the pump member 52 is operated to supply the fluid to the body housing 31 through the check valve 51a to increase the internal pressure, On the other hand, if the detected internal pressure is higher than 10 kg / cm 2, the driving of the pump member 52 is stopped. Accordingly, the main body housing 31 can always maintain the internal pressure at 10kg / ㎠.

In this state, when the contact pressure is transmitted to the guide housing 35 in one-to-one communication via the housing 11 and the hose member 14d by the contact between the roll and the contact plate 13, a plurality of guide housings ( Since the second piston 32 having a plurality of guide rods 32a integrally inserted in correspondence with 35) starts to be lowered in the main body housing 31, the second piston 32 is disposed below the second piston 32. And compresses the air filled bellows pipe 36a and simultaneously compresses the spring member 36b for elastically supporting the third piston 33 and absorbs the contact pressure.

At the same time, the internal pressure of the main body housing 31 is raised by the third piston 33 which is lowered together with the second piston 32. At this time, the internal pressure of the main body housing 31 is detected. When 12 kg / cm 2 or more of the measured value of the pressure detecting sensor 37 is 20% higher than the set pressure value 10 kg / cm 2, the relief valve 53 is opened to lower the internal pressure of the main body housing 31. By opening operation, fluid such as oil filled in the inner space of the main body housing 31 is discharged to the outside to discharge to the discharge tank 54 side. When the internal pressure of the main body housing 31 is 12 kg / cm 2 or less, the relief valve 53 is closed to stop the fluid discharge.

In addition, when the roll and the contact plate 13 do not contact each other and do not collide with each other, the contact pressure generated when the roll contacts the roll by the internal pressure of the main body housing 31 and the elastic force of the bellows pipe 36a and the spring member 36b. The second and third pistons 32 and 33 which are lowered by the lower portion are raised and returned, and the first and second pistons 12 in the housing 11 communicating with the main body 31 are also the second and third pistons 32 ( Return to the initial state by the pressure transmitted during the return return of 33).

Therefore, according to the present invention having the configuration as described above, when the roll is horizontally set between the headstock and the tailstock of the roll polishing machine before performing the roll surface polishing, directly hits the end of the roll and the center of the headstock Prevents damage to the components constituting the roll polishing machine, improves durability, prevents shaking during roll polishing, and prevents equipment accidents during roll polishing. The effect which can improve is obtained.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (5)

In the device for grinding the roll surface by placing a roll between the headstock 110 and the tailstock 110a, A first piston having a plurality of housings 11 filled with a fluid on one side of the spindle 138 of the headstock 110 corresponding to one end of the roll and reciprocally assembled in each of the housings 11 A contact portion (10) having a contact plate (13) on the rod (12a) of 12) to contact one end of the roll to absorb shock; The second and third pistons 32 and 33 which are operated by the contact pressure generated when the roll and the contact plate 13 are in contact with the housings 31 connected to the respective housings 11 are provided. A pressure regulating unit 30 for adjusting the pressure in the housing 11; And Hydraulic pressure for controlling the operation of the pump member 52 to maintain a constant internal pressure of the main body housing 31 based on the measured value of the pressure sensor 37 for detecting the internal pressure of the main body housing 31 Headstock center collision avoidance device of the roll polishing machine, characterized in that it comprises a portion (50). The method of claim 1, The outer threaded surface 11a of the housing 11 is detachably assembled to the outer surface of the spindle 138 and is assembled with the female threaded portion 14c of the base 14 on which the fluid supply line 14b is formed. And detachably assemble the guide cover 15 formed therethrough with a guide hole 15a for reciprocally supporting the rod 12a of the first piston 12 at the other end of the housing 11. On the other hand, the main shaft of the roll polishing machine, characterized in that the air vent (11b) is formed through the outer surface so that the air inlet and outflow of the housing (11) during the reciprocating operation of the first piston 12 freely Stand Center Collision Avoidance. The method of claim 1, The spherical ball member 17 is detachably assembled to the male threaded portion 12d formed on the rod 12a of the first piston 12, and the ball member 17 has an inner spacer having an inner bush 16a. 16) and the headstock center collision preventing device of the roll polishing machine, characterized in that rotatably assembled between the outer spacer (18) having an outer bush (18a). The method of claim 1, A cover member 34 having a plurality of guide holes 34b formed therethrough is assembled at an upper end of the main body housing 31, and the second and second cylindrical guide housings 35 are assembled to each of the guide holes 34b. Each guide rod 32a of the piston 32 is assembled to be movable up and down, and an upper end of each of the guide housings 35 is connected to the housing 11 while the second piston 32 and the third piston are connected. A bellows tube 36a and a spring member 36b are provided between the piston 33 and between the third piston 33 and the bottom surface of the main housing 31. Prevention device. The method of claim 1, When the internal pressure value of the main body housing 31 is lower than a preset pressure value, the pressure detecting sensor 37 operates the pump member 52 to supply fluid through the check valve 51a to supply internal pressure. When the detected internal pressure value is higher than the preset pressure value, the driving of the pump member 52 is stopped while the internal pressure value of the main body housing 31 is 20% higher than the set pressure value. By opening the relief valve 53, the fluid in the main body housing 31 is discharged to the outside, and when the internal pressure value is less than that, the relief valve 53 is closed to stop the fluid discharge. The center of the head restraint of the roll polishing machine.

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