KR100742883B1 - An apparatus for fitting the disassemble hydraulic nut - Google Patents

Abstract

The present invention relates to a device used to service a disassembly hydraulic nut.

The present invention includes a lifting unit (10) for elevating the work base (12) in accordance with the working height of the operator equipped with a work base 12 on the rod end of the first cylinder (11) installed vertically on the bottom surface; A second cylinder 32 is provided on the work base 12 which rotates the 'b' shaped rotary table 31 on which the hydraulic nut 2 is raised by 90 °, and the hydraulic nut 2 is seated. An operating part for maintaining the hydraulic nut 2 with a rotating part 36 for rotating the rotary roller 35 in one direction and a polishing part 37 for polishing the inner and outer diameters of the hydraulic nut 2 that is rotated in one direction. 30); The hydraulic pump 52 having a hydraulic hose 55 and a pressure gauge 53, one end of which is detachably connected to the on port 5 of the hydraulic nut 2 mounted on the rotary table 31, is provided with the hydraulic pressure. Including an inspection unit (50) for checking leakage by pressurizing an external pressure into the nut (2), and can easily perform the maintenance work of the hydraulic nut used to disassemble and reassemble the sleeve bearing assembled to the choke of the rolling roll So that the hydraulic nut can be turned over and rotated, and the oil leak inspection on the repaired hydraulic nut can be performed at the same time.

Hydraulic Nut, Rotary Table, Cylinder, Guide Base, Pressure Gauge

Description

Hydraulic nut maintenance device for disassembly {AN APPARATUS FOR FITTING THE DISASSEMBLE HYDRAULIC NUT}

Figure 1 (a) (b) is a state diagram showing the operation of conducting and mapping the conventional hydraulic nut,

Figure 2 is a perspective view showing a hydraulic nut maintenance device for disassembly according to the present invention,

3 is an exploded perspective view showing a hydraulic nut maintenance device for disassembly according to the present invention;

Figure 4 (a) (b) (c) is a plan view, a side view and a front view showing a hydraulic nut maintenance device for disassembly according to the present invention,

Figure 5 is a detailed view showing the assembly structure of the second cylinder employed in the hydraulic nut maintenance device for disassembly according to the present invention.

 Explanation of symbols on the main parts of the drawings

11 ..... 1st Cylinder 12 ..... Workbase

31 ..... Rotary Table 32 ..... 2nd Cylinder

33 ..... Crevis 34 ..... Arm

35 ..... rotary roll 36 ..... rotary part

37 ..... Polishing part 39 ..... Guide Base

51 ..... hydraulic tank 52 ..... hydraulic pump

53 ..... Pressure gauge 55 ..... Hose element

The present invention relates to an apparatus used to maintain a disassembly hydraulic nut, and more particularly, to a hydraulic pressure to easily perform the maintenance work of the hydraulic nut used to disassemble and reassemble the sleeve bearing assembled to the choke of the rolling roll The present invention relates to a hydraulic nut maintenance device for disassembling the nut, which is capable of conducting and rotating the nut, and at the same time, to perform a leak test on a completed hydraulic nut.

In general, steel mills have a rolling mill and a rough rolling facility in a hot rolling mill, and these rolling facilities have a work roll for rolling a steel plate in an up and down structure, and a backup roll for rotating while supporting the work roll. The backup roll should be repaired by replacing it according to the use time and the degree of wear.

Then, the replaced backup roll is transported to the roll maintenance station and seated on the choke disassembling device to disassemble the chokes assembled at the left and right ends of the backup roll, where the sleeve bearing is to be withdrawn from both chokes of the backup roll. As shown in 1 (a) (b), after inserting the hydraulic nut (2) next to the choke, the high-pressure oil is pushed into the on-port to pull out the sleeve bearing. To carry out the work.

On the other hand, the hydraulic nut (2) that has been repeatedly used has to be repaired by disassembling and repairing the conventional hydraulic nut (2). The maintenance of the conventional hydraulic nut (2) is performed by removing the hydraulic nut from the choke with a crane, After placing them in the crate, dismantle all the tools used for withdrawal.

In addition, the operation of inverting the inner diameter of the hydraulic nut 2 vertically hooks the wire rope 3 caught on the hook 3a of the crane to the inner diameter of the hydraulic nut 2, and then lifts the crane. After tilting, the operator applies the force and inverts, and then tightens the eye bolt to the screwed part of the hydraulic nut, transfers it to the hydraulic nut disassembly and assembly device as a crane, and performs the disassembly work. At the same time, while squatting and performing maintenance, the finishing work on the sleeve 8 of the hydraulic nut 2 mounted on the pedestal 9 was performed.

On the other hand, the maintenance of the hydraulic nut (2) is completed by the hook hook again to the hook of the crane, the risk of safety accidents of the worker due to stenosis or collision of the worker during the felling operation is very high, due to excessive collision work hydraulic nut ( Damage to parts or outside surface of 2) occurred.

Then, the hoisted hydraulic nut (2) is transferred to the assembly stand and pressurized the on-port (5) using a hydraulic pump to check whether there is any leakage and finally complete the maintenance work. By conducting maintenance work once again by using a crane, the worker's work load is increased, and the hydraulic nut is damaged due to frequent transportation and maintenance work of the hydraulic nut, reducing the efficiency of workability and maintaining maintenance cost. And there was a problem of raising the material cost.

Therefore, the present invention has been proposed to solve the above-mentioned conventional problems, and can easily and safely perform maintenance work on the hydraulic nut used to disassemble and reassemble the sleeve bearing assembled to the choke of the rolling roll. It is to provide a hydraulic nut maintenance device for disassembly that can be conducted and rotated the hydraulic nut, and at the same time can perform a leak test for the repaired hydraulic nut.

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

 In the apparatus for servicing the hydraulic nut used to disassemble the sleeve bearing assembled to the choke of the rolling roll,

An elevating unit for elevating and lowering the work base in accordance with a work height of a worker by having a work base at a rod end of a first cylinder installed vertically on a floor;

A hydraulic cylinder having a second cylinder for turning the 'b' shaped rotary table on which the hydraulic nut is raised is rotated 90 degrees on the work base, and having a rotating part for rotating the rotating roller on which the hydraulic nut is seated in one direction. An operation part for maintaining the hydraulic nut, having a polishing part for polishing the inner and outer diameter parts of the;

And an inspection unit for inspecting leakage by pressurizing an external pressure into the hydraulic nut with a hydraulic pump having a hydraulic hose and a pressure gauge, one end of which is detachably connected to an on port of the hydraulic nut mounted on the rotary table. By providing a hydraulic nut maintenance device for disassembly.

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

Figure 2 is a perspective view showing a hydraulic nut maintenance device for disassembly according to the present invention, Figure 3 is an exploded perspective view showing a hydraulic nut maintenance device for disassembly according to the present invention, Figure 4 (a) (b) (c) 5 is a plan view, a side view, and a front view showing a disassembly hydraulic nut maintenance device according to the present invention, and FIG. 5 is a detailed view illustrating an assembly structure of a second cylinder employed in the disassembly hydraulic nut maintenance device according to the present invention.

As shown in Figs. 2 to 5, the device (1) of the present invention performs the inspection, maintenance and leakage inspection of the hydraulic nut used for disassembling and assembling the sleeve bearing of the choke. As safe and simple to perform without damage to the surface, such an apparatus 1 is composed of a lifting unit 10, the operating unit 30 and the inspection unit 50 and the like.

In other words, the elevating unit 10 is made of a cylinder box (11a) is installed on the bottom surface so as to raise and lower the work base 12, the hydraulic nut (2) that is the maintenance object is placed in accordance with the working height of the worker The first cylinder 11 is provided vertically, and the lower end of the rectangular work base 12 is connected to the rod end of the first cylinder.

And, the rod end of the first cylinder (11) to move up and down along the edge of the cylinder box (11a) so that the lifting operation of the work base 12 can be performed smoothly without shaking left and right. To be fitted.

In addition, between the rod end of the first cylinder 11 and the lower surface of the work base 12 is mounted on the lower connecting plate 12a of the work base 12 to enable the work base 12 to rotate. And a bearing receiving tool 16 into which the rotating bearing 15 is rotatably inserted, and the bearing 15 and the bearing receiving tool 16 have locking pins to control the rotation of the work base 12. Each of the keyholes 15a and 16a into which 17 is inserted is formed, and when they coincide with each other, the locking pin 13 is inserted to control the rotation of the work base 12.

In addition, the operating part 30 which conducts the maintenance work that projects the external surface while conducting the hydraulic nut 2 by 90 ° and rotating in one direction has a 'b' shaped rotary table on which the hydraulic nut 2 as a maintenance target is seated. The rotary shaft 32 of the 31 is rotatably assembled on the work base 12, and the rotary shaft 32 pivots the rotary table 31 by 90 ° so that the hydraulic nut 2 mounted thereon is rotated. The second cylinder 32 is configured to generate an external force to invert so that the finishing operation on the inner and outer diameter parts can be easily performed.

The rear end of the second cylinder 32 is rotatably connected via the crevice 33 and the hinge pin 33a installed on the work base 12, and the rod end is connected to the rear end of the operation arm 34 and again. It is rotatably connected via another hinge pin (33b), the front end of the operation arm 34 is integrally mounted to the right angle of the rotary table 31, the bearing member (31b) of the bearing block (31c) Both ends are connected integrally with the center of the length of the rotating shaft (31a) rotatably assembled. Accordingly, when the second cylinder 32 is moved forward and backward, the rotary table 31 is capable of conducting the hydraulic nut 2 mounted thereon while being rotated 90 ° about the rotation shaft 31a.

In addition, the one side of the work base 12 is provided with a rotary part 36 for rotating the rotary roller 35 on which the hydraulic nut 2 inverted so that the inner diameter thereof is horizontal, the rotary part 36, the rotary part 36 Among the left and right pair of rotary rollers 35 rotatably assembled on one side of the rotary table 31 is provided with a shovel inlet (36a) that the tip is fitted to the roller shaft (35a) of one roller member, the insertion hole ( 36a) is mounted to the drive shaft of the motor 36b for generating the rotational driving force, and the motor member 36b is formed between the insertion hole 36a having a square cross section and a roller shaft end portion so as to smoothly transmit the rotational power during molding. It is assembled so as to be able to move forward and backward on the rod end of the motor forward and backward cylinder 36c so that the connection can be interrupted.

Accordingly, the motor forward and backward cylinder 56c moves the rod end when the hydraulic nut 2 seated thereon is raised on the rotary roller 35 by the conduction of the rotary table 31 so that the inner diameter becomes horizontal. It is possible to rotate the hydraulic nut 2 in one direction by connecting the insertion hole 36a and the roller shaft 35a by moving forward.

In addition, while rotating the hydraulic nut (2) mounted on the rotary roller 35 by the rotary part 36 is provided with a polishing part 37 for polishing a horizontal inner and outer diameter part, the polishing part ( 37) is a first grinding cylinder (37b) for the forward and backward operation by mounting the grinding wheel (37a) for contact with the inner and outer diameter of the hydraulic nut (2) to perform the grinding operation, and the cylinder (37b) It consists of the 2nd grinding cylinder 37c which raises and lowers.

Accordingly, the rod tip of the second polishing cylinder 37c is moved up and down to move the grindstone 37a of the first polishing cylinder 37b to contact the inner and outer diameters of the hydraulic nut 2. , Surface polishing for the hydraulic nut (2) to be rotated is to be easily performed.

In addition, the guide hole 36b in which the rod of the motor forward and backward cylinder 36c of the rotating part 36 is assembled, and the second polishing cylinder 37c of the polishing part are provided on the fixed base 38, and the lower part thereof. Semi-circular guide base (39a) having a semi-circular guide groove (39a) in which the semi-circular guide rail (38a) formed on the surface is slidably assembled, is integrally formed on the work base (12), and the guide groove (39a) Both ends are blocked so that the guide rail 38a can be easily separated.

Accordingly, by changing the position of the fixed base 38 along the guide groove (39a) it is possible to perform the grinding operation on the hydraulic nut (2) mounted on the rotary table 31 so that the inner diameter is vertical. .

On the other hand, the inspection unit 50 for checking the leakage of the hydraulic nut after the grinding work in the inverted rotary table 31 is a tank base in which the hydraulic tank 51 is mounted on one side of the work base 12 A hydraulic pump 52 having a valve member 54 is installed in the hydraulic tank 51, and the rotary table is provided at the end of the hydraulic hose 55 connected to the hydraulic pump 52. A connector 55a is provided so that the on-port 5 of the hydraulic nut 2 mounted on the 31 can be easily detached.

Accordingly, the hydraulic pump 52 is supplied to the hydraulic pump 52 while supplying the hydraulic pressure of the hydraulic tank 51 while the connector 55a of the hydraulic hose 55 is connected to the on port 5 of the hydraulic nut 2. The installed pressure gauge 53 is checked for leaks.

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

When servicing the hydraulic nut 2 repeatedly used to disassemble and reassemble the sleeve bearing assembled to the choke of the rolling roll, the hydraulic nut 2 disassembled from the choke of the rolling roll is first conveyed by a crane. By raising and lowering the inner and outer diameter portions on the horizontal surface of the rotary table 31 initially positioned so that the rotary roll 35 is disposed on the vertical surface, and then lifting and lowering the first cylinder 11 fixed to the bottom surface, Adjust the installation height of the work base 12, the rotary table 31 is installed in accordance with the working height of the operator.

Subsequently, in order to perform the maintenance work of polishing the surface while rotating the hydraulic nut 2 having the inner and outer diameter parts vertical to the horizontal position by rotating the inner and outer diameter parts on the rotary roller 35, the rotary table 31 When the second cylinder 32, which is connected to the rotary shaft 31a of the arm and the arm 34 and the rod end is moved forward, is operated backward, the rotary shaft 31a integrally assembled with the arm 34 is shown in the drawing. Since the rotary table 31 also rotates counterclockwise around the counterclockwise rotation, the vertical and horizontal planes of the rotary table 31 are interchanged with each other so that the inner and outer diameters are perpendicular to the horizontal plane of the rotation. The hydraulic nut 2 was positioned on the rotary roll 35 after turning so that the inner and outer diameter portions thereof were horizontal.

Subsequently, when the motor shaft 36b of the rotary part 36 disposed on one side of the work base 12 and the roll shaft of the rotary roll 35 conducted by 90 ° by turning of the rotary table correspond to each other, the motor ( The motor forward and backward cylinder 36c provided at the rear of 36b is moved forward to insert the end of the roll shaft facing the insertion hole 36a of the motor 36b so as to enable power transmission. By rotating 36b in one direction, the hydraulic nut 2 on the rotary roll 35 connected thereto can also be rotated in one direction.

As described above, when the hydraulic nut 2 is rotated, the grinding wheel 37a of the first polishing cylinder 37b whose height is adjusted by the forward and backward operation of the second polishing cylinder 37b is The finishing operation of surface polishing of scratches and damaged parts may be performed by contacting the inner and outer diameter surfaces of the hydraulic nut 2.

On the other hand, when the maintenance work for polishing while rotating the hydraulic nut (2), the position conductive in the rotary table 31 as described above is finished, the grinding wheel (37a) of the polishing unit 37 is spaced apart from the surface, The rotary table 31 is operated when the second cylinder 32, which is operated backward, is moved forward with the insertion hole 36a assembled to the motor 36b of the rotating part 36 separated from the roll shaft to completely block the rotational power. Is returned to its initial state while turning clockwise in the drawing about the rotating shaft 31a. At this time, the inner and outer diameter portions of the hydraulic nut 2 on the rotating roller 35 are disposed vertically on a horizontal plane. It is reconducted as much as possible, and the on port 5 and the off port 6 are exposed.

Accordingly, the connector 55a mounted on the hose member 55 of the hydraulic pump 52 is connected to the exposed on-port 5, and then the hydraulic pressure is controlled by operating the valve member 54 of the hydraulic tank 51. It is inspected that oil leaks while supplying, and the hydraulic pressure supplied is frequently checked with the pressure gauge 54 to determine whether the hydraulic nut 2 is comprehensively used.

Therefore, according to the present invention having the configuration as described above, the hydraulic nut separated from the choke of the rolling roll can be easily conducted and re-conducted on the rotary table, and the hydraulic nut is assembled by a motor assembled to move forward and backward. By grinding the surface with a grindstone while rotating, and continuously conducting the oil leakage test on the hydraulic nut after the maintenance work, the fall of the hydraulic nut is safely performed without the risk of safety accident, and the maintenance work time is shortened. An effect that can be improved 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 (6)

In the apparatus for servicing the hydraulic nut (2) used to disassemble the sleeve bearing assembled to the choke of the rolling roll, An elevating part 10 provided with a work base 12 at a rod end of the first cylinder 11 vertically installed on a bottom surface to move the work base 12 up and down in accordance with a worker's work height; A second cylinder 32 is provided on the work base 12 which rotates the 'b' shaped rotary table 31 on which the hydraulic nut 2 is raised by 90 °, and the hydraulic nut 2 is seated. An operating part for maintaining the hydraulic nut 2 with a rotating part 36 for rotating the rotary roller 35 in one direction and a polishing part 37 for polishing the inner and outer diameters of the hydraulic nut 2 that is rotated in one direction. 30); The hydraulic pump 52 having a hydraulic hose 55 and a pressure gauge 53, one end of which is detachably connected to the on port 5 of the hydraulic nut 2 mounted on the rotary table 31, is provided with the hydraulic pressure. Disassembling hydraulic nut maintenance device comprising a; inspection unit (50) for inspecting leakage by pressurizing the external pressure into the nut (2). The method of claim 1, Rotating bearing mounted on the lower connecting plate 12a of the work base 12 to enable the work base 12 to be rotated between the rod end of the first cylinder 11 and the lower surface of the work base 12. The bearing receiving tool 16 is rotatably inserted into the holder 15, and the locking pin 17 is inserted into the bearing 15 and the bearing receiving tool 16 so as to control the rotation of the work base 12. Disassembled hydraulic nut maintenance device, characterized in that to form a key hole (15a) (16a), respectively, and when they are matched to each other by inserting the locking pin (13) to control the rotation of the work base (12). The method of claim 1, The rear end of the second cylinder 32 is rotatably connected via the crevis 33 and the hinge pin 33a installed on the work base 12, and the rod end is connected to the rear end of the operation arm 34 and again. It is rotatably connected via another hinge pin (33b), the front end of the operation arm 34 is integrally mounted to the right angle of the rotary table 31, the bearing member (31b) of the bearing block (31c) Disassembling hydraulic nut maintenance device, characterized in that the left and right ends are integrally connected to the center of the length of the rotating shaft (31a) assembled rotatably. The method of claim 1, The rotary part 36 mounts an insertion hole 36a in which a tip is fitted to the roller shaft 35a of one roller member of the rotary rollers 35 to the drive shaft of the motor 36b, and the motor member 36b is a motor. Disassembly hydraulic nut maintenance device, characterized in that assembled to the rod end of the forward and backward cylinder (36c). The method of claim 1, The grinding unit 37 is a first grinding cylinder (37b) for forward and backward operation by mounting the grinding wheel (37a) for contact with the inner and outer diameter portion of the hydraulic nut (2) to perform the grinding operation, and the Disassembly hydraulic nut maintenance device, characterized in that composed of a second polishing cylinder (37c) for raising and lowering the cylinder (37b). The method of claim 1, The rotating part 36 and the polishing part 37 are installed on a fixed base 38 having a semicircular guide rail 38a formed on a lower surface thereof, and the guide rail 38a is integrally formed with the work base 12. Hydraulic nut maintenance device for disassembly, characterized in that the slide is assembled to the semi-circular guide groove (39a) of the semi-circular guide base (39) to be mounted.

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