JPH11277148A - Roller steel straightening machine, steel straightening equipment, and method of connecting roller and sleeve assembly unit - Google Patents

Abstract

(57) [Summary] [Problem] To improve roller accuracy without lowering correction accuracy.
Provided is a roller shape steel straightening machine capable of easily changing a sleeve assembly unit. A split roller (59) is provided on the outer periphery of sleeves (60, 63).
a roller and sleeve assembly unit Q in which a and b are arranged;
Drive-side chock 91 for rotatably supporting shaft 93
Drive-side bearing unit R provided with sleeves 60 and 63
Bearing unit P provided with an operating side chock 22 for rotatably supporting the bearing, and connecting means for detachably connecting the operating side bearing unit P and the roller / sleeve assembly unit Q to each other. (1) pistons 69 and 78 operated by pressure oil from a hydraulic pump 49;
It has clamp rings 66 and 68 which engage with the operation side bearing unit P and the roller / sleeve assembly unit Q via a predetermined axial gap and move in the axial direction according to the operation of the pistons 69 and 78.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller shape straightening machine provided in a section steel manufacturing facility, and more particularly to a roller shape straightening machine in which two divided straightening rollers are respectively attached to sleeves.

[0002]

2. Description of the Related Art Usually, a rolled H-section steel is hot formed by a universal mill and then cooled. At this time, the warpage or bending generated due to the cooling process is corrected by the correction roller of the roller correction machine. This straightening roller is
When worn or when the type or size of the straightening material is changed, it is necessary to replace the straightening roller with a new straightening roller that has been already prepared and to reassemble.

In recent years, as a means for reducing the number of roller exchanges when changing the size of an H-section steel, a method has been adopted in which the width between two divided straightening rollers (split rollers) is made variable. In this case, the rollers are taken out from the roller shaft of the straightening machine together with the split roller as a roller / sleeve assembly unit in which the split roller is attached to the sleeve, and are rearranged.

[0004] As a known technique related to the roller type steel straightening machine of this type, for example, Japanese Utility Model Application Laid-Open No. 58-18615.
JP, JP-A-2-76611, JP-A-5-32
8 and JP-A-9-47815. In the roller section steel straightening machines disclosed in these, during straightening, the sleeve and the choc side member to which the sleeve is attached are connected by fastening with screws, eliminating these axial gaps and ensuring high straightening accuracy. On the other hand, at the time of roller replacement, the screw is loosened to release the fastening, the sleeve is opened from the chock side, the roller / sleeve assembly unit is pulled out, and the roller replacement is performed.

[0005]

However, the above-mentioned conventional roller-shaped steel straightener has a problem that it is difficult to set a tightening torque of a screw for fastening the sleeve and the chock side member. In other words, if the tightening torque is too large, the sleeve and the chock side member will be fixed more and more strongly due to various factors such as acceleration and deceleration during straightening. Therefore, the time required to change the roller / sleeve assembly unit becomes longer, and the productivity becomes worse.
It takes a lot of effort to rearrange. Conversely, if the tightening torque is too small, the screws are loosened due to various factors during the above-mentioned straightening, and the straightening accuracy is reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a roller shape straightening machine, a steel shape straightening facility, and a connection of a roller sleeve assembly unit which can easily change the roller / sleeve assembly unit without lowering the straightening accuracy. It is to provide a method.

[0007]

(1) In order to achieve the above object, the present invention provides a roller and sleeve assembly unit in which a plurality of split rollers are arranged on the outer periphery of a sleeve, and a driving force from a rotary driving means. A rotating shaft; and a driving-side bearing unit rotatably supporting the shaft. The driving-side bearing unit transmits the rotation of the shaft to the roller-sleeve assembly unit and rotates the shaft. An operating-side bearing unit having operating-side bearing means for rotatably supporting a sleeve; and a connecting means for detachably connecting the operating-side bearing unit and the roller-sleeve assembly unit; In the roller shape steel straightening machine performing, the connecting means,
A hydraulic cylinder, which expands and contracts by pressure oil guided from a hydraulic pressure source, engages with each of the operation-side bearing unit and the roller-sleeve assembly unit via a predetermined axial gap, and expands and contracts the hydraulic cylinder. The operating side bearing unit and the roller sleeve assembly unit are brought into close contact with each other in the axial direction via the engaging member when the hydraulic cylinder is in an extended state. Is configured. At the time of correction,
For example, the hydraulic oil from the hydraulic pressure source is guided to the hydraulic cylinder at a relatively high pressure to extend the hydraulic cylinder, move the engaging member in the axial direction, and assemble the operating-side bearing unit and the roller sleeve through the engaging member. Closely contact the unit in the axial direction. Thereby, the correction accuracy can be kept high. On the other hand, when reassembling the roller / sleeve assembly unit for roller replacement, the operating side bearing unit and the roller / sleeve are reduced by reducing the pressure of the pressure oil guided from the hydraulic source to the hydraulic cylinder to a relatively low pressure. Since the close contact in the axial direction with the assembly unit can be released, the roller / sleeve assembly unit can be released from the operation side bearing unit and easily extracted. Therefore, it is possible to easily change the roller / sleeve assembly unit.

(2) In the above (1), preferably,
The connection means further includes an elastic force generating means for generating an elastic force for separating the operation side bearing unit and the roller / sleeve assembly unit in the axial direction via the engagement member. This makes it possible to replace the roller
When the sleeve assembly unit is rearranged, not only does the operation side bearing unit and the roller / sleeve assembly unit release the close contact in the axial direction, but also the operation side bearing unit and the roller / sleeve assembly unit are resiliently generated by the elastic force generating means. Can be positively separated, so that the roller / sleeve assembly unit can be more easily replaced.

(3) In the straightening equipment having the roller straightening machine of the above (1), a hydraulic source for supplying pressure oil to the hydraulic cylinder and a pressure oil from the hydraulic source are supplied to the roller type straightening machine. An external hydraulic line leading to the steel straightening machine, and an internal hydraulic line disposed in the roller type steel straightening machine such that one end is connected to the external hydraulic line and the other end is connected to the hydraulic cylinder. And pressure adjusting means for adjusting the pressure of pressure oil guided into the in-machine hydraulic line.

(4) In the above (3), the in-machine hydraulic line has a movable side portion provided in the operating side bearing unit and a fixed side portion other than the movable side portion. The part and the fixed side part are detachably connected via a hydraulic auto coupler provided with a check valve. For example, when reassembling the roller / sleeve assembly unit, pull out the operation side bearing unit and roller / sleeve assembly unit and separate it from the drive side bearing unit, or replace the operation side bearing unit and roller When the sleeve assembly unit is pushed in to integrate with the drive side bearing unit, the movable side part and the fixed side part can be easily attached and detached by the hydraulic auto coupler, and automation becomes possible.

(5) In order to achieve the above object, the present invention also provides a roller / sleeve assembly unit provided in a roller-shaped steel straightening machine and having a plurality of split rollers arranged on the outer periphery of a sleeve. In the connecting method of the roller-sleeve assembly unit connected to the operation-side bearing unit supported on the roller, the engagement member is engaged with each of the roller-sleeve assembly unit and the operation-side bearing unit via a predetermined axial gap. The roller / sleeve assembly unit is connected to the operating-side bearing by absorbing the predetermined axial gap of the engaging member by using an extension stroke of a hydraulic cylinder that extends by hydraulic oil guided from a hydraulic source. Closely contact the unit in the axial direction.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a front view showing the structure of the whole roller straightening machine according to the present embodiment, and FIG. 3 is a side view showing the same. FIG. 3 also shows a roller / sleeve assembly unit rearranging device (described later), which will be described later. 2 and 3, the straightening machine 1
Is an upper roller which is arranged alternately up and down along a longitudinal direction of a straightening member (for example, an H-section steel) 4 in the main body frame 2, an elevating device 3 for raising and lowering the main body frame 2. And a lower roller support 9 provided with an elevating device 8 for lifting and lowering the lower roller and the bearing component 7.

The elevating device 3 includes an elevating motor 3a and a worm jack 3b. The elevating device 3 raises and lowers the main body frame 2 in accordance with the size of the H-section steel 4 so that the transfer table (upper roller) and the bearing assembly 5 are transported. Positioning is performed with respect to the entrance table 10 and the exit table 11).

The upper roller and bearing structure 5 and the upper roller support 6 are provided at four positions in the path direction positions # 2, # 4, # 6, and # 8. Then, each of the upper rollers and the bearing components 5 are # 2, # 4, # 6, # 8 according to the position in the path direction.
Horizontal rollers 59a and 59b (detailed structure will be described later) are provided. These horizontal rollers 59a and 59b are connected to a motor 18a via a universal joint 17 (see FIG. 3).
And a drive device 18 (same as above) having a speed reducer 18b. When the roller / sleeve assembly unit Q (described later) is pulled out from the operation side bearing unit P (same) for roller replacement, the position of the universal joint 17 on the roller side (shaft side) is set by the coupling clamp 19. Is held. At this time, the # 2, # 4 upper roller support 6 is a screw nut type # 2, # 2 equipped with a roller pitch motor 12a and a screw 12b.
The four-pitch moving device 12 can move in the pass direction. Similarly, # 6, # 8 upper roller support 6
It can be moved in the path direction by a # 6, # 8 pitch moving device 13 having a roller pitch motor 13a and a screw 13b. The upper roller support 6
Is also movable in the roller axial direction by an axial moving device 16 (see FIG. 3) including a motor 16a and a worm jack 16b. Each upper roller support 6 is provided with an upper rail 101 on which the wheels 21 of the operation side chock 22 (described later) run when the combined body of the operation side bearing unit P and the roller sleeve assembly unit Q is pulled out. (Same).

The lower roller and bearing structure 7 and the lower roller support 9 are positioned in the path direction positions # 1, # 3, # 5, # 7, # 9.
Are provided at five locations. Like the upper roller and the bearing structure 5, each of the lower rollers and the bearing structure 7 also includes # 1, # 3, # 5, # 7, and # 9 horizontal rollers (detailed structure will be described later) corresponding to the path direction position. And each horizontal roller has
Drive device 20 including motor 20a and reduction gear 20b
(See FIG. 3). Further, each lifting device 8 is built in each corresponding lower roller support 9 and drives a worm jack 8b (same) with a lifting motor 8a (same) to form a lower roller and a bearing for each roller unit. The body 7 is moved up and down to apply a bending force to the straightening member 4. At this time, # 1,
The # 3, # 7, and # 9 lower roller supports 9 are screw nut type # 1 equipped with roller pitch motors 14a and 15a and screws 14b and 15b, respectively, similarly to the upper roller pitch moving devices 12 and 13 described above. , # 3 and # 7, # 9 can be moved in the path direction by the pitch moving devices 14, 15. The upper roller pitch moving devices 12 and 13 and the lower roller pitch moving devices 14 and 15 make the upper and lower roller supports 6 and 9 optimal according to the type and specifications of the straightening member 4 as a shaped steel. A roller pitch is formed. Each of the lower roller supports 9 includes a lower rail 102 (described later) used when pulling out the combined body of the operation side bearing unit P and the roller / sleeve assembly unit Q.

As will be described in detail later, the support structure of the roller shafts of the upper roller and the bearing structure 5 and the lower roller and the bearing structure 7 is of a double-supporting type. By doing so, it is possible to efficiently carry out straightening of a section steel having a large section modulus and high-precision straightening.

Here, the structures of the # 2, # 4, # 6, # 8 upper rollers and bearing structure 5 will be described with reference to FIGS. 1, 4, 5, 6, 6, 7, 8, and 9. Will be explained. FIG. 1 is a side sectional view illustrating an installation structure of an upper roller and a bearing structure 5.
FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 1 (however, the connection sleeve 24 and the like in the operation side chock 22 are not shown for the sake of simplicity), and FIG. FIG. 6 is an enlarged cross-sectional view illustrating the structure, FIG. 6 is a transverse cross-sectional view taken along the line VI-VI in FIG. 5, FIG. 7 is an enlarged cross-sectional view illustrating the detailed structure of a portion B in FIG. VIII-VI in FIG.
FIG. 9 is a transverse cross-sectional view (excluding the key 119) taken along the II section, and FIG. 9 is a view as seen from the direction C in FIG.

In FIGS. 1 to 9, the upper roller and the bearing structure 5 mainly include an operation side bearing unit P, a roller / sleeve assembly unit Q, and a drive side bearing unit R.
And these are configured to be separable from each other.
Hereinafter, the details of the operation side bearing unit P, the roller / sleeve assembly unit Q, and the drive side bearing unit R will be sequentially described.

(1) Operating-side bearing unit P In FIGS. 1 to 9, the operating-side bearing unit P
1, a rolling bearing 23 attached to the operating side chock 22, a connection sleeve 24 inserted into the bearing 23, a casing 25 fixed to the operating side chock 22, and the casing A casing 29 fixed to the casing 25; a piston 29 axially movable in a space defined by the inner diameter of the casing 25 and 26 and the outer diameter of the casing 28;
Rolling bearing 30 fixed to this piston 29
A bearing holder 31 inserted into the bearing 30, a spline shaft 32 in which the bearing holder 31 is fixed in the axial direction and a spline is formed in the outer peripheral portion, and the outer peripheral portion is formed in the casing 28 through the bearings 33a and 33b. The spline sleeve 34 has a spline sleeve 34 rotatably supported by the peripheral portion and having a spline engaged with the outer peripheral portion of the spline shaft 32 on the inner peripheral side, and an arm 35 projecting from the operation side chock 22. I have.

The operation side chock 22 includes a carrier bar 36.
4 is pressed against a shaft adjusting plate 39 by a balance cylinder 38 (see FIG. 4), and the axial position is determined by a key 40. At this time, the carrier bar 36 is pressed against the main body frame 2 by the balance cylinder 41 (same as above).

The piston 29 has hydraulic chambers 42 and 43 formed between the piston 29 and the casings 26 and 28. The hydraulic oil is introduced from a hydraulic source (not shown) into one of the hydraulic chambers, and the hydraulic oil is shown from the other. By discharging to a hydraulic tank that does not work, it moves in the axial direction. Accordingly, as described later, the inner sleeve 63 moves in the axial direction, and the position of the driving-side roller 59b moves, and the roller 59b moves.
The distance between a and 59b can be adjusted.

In the bearing holder 31, there is provided an oil passage 44 for supplying pressure oil to hollow portions 70 and 79, which will be described later, and a pipe 45 is connected to the operation side of the passage 44. The pipe 45 communicates with a hydraulic chamber 48 formed between the spline sleeve 34 and the spline shaft 32 via an oil passage 46 provided in the spline shaft 32.

Into the hydraulic chamber 48, pressurized oil is introduced from a hydraulic source disposed outside the straightening machine 1 of the section straightening equipment. FIG. 10 shows a system diagram of the hydraulic supply system. In FIG. 10, pressure oil discharged from a hydraulic pump 49 as a hydraulic pressure source is guided to the straightening machine 1 via an external hydraulic pipeline 51 having an electromagnetic proportional valve 50. At this time, the electromagnetic proportional valve 50 is switched according to a control signal from a controller (not shown). That is, FIG.
When a control signal is input to the lower middle drive unit 50a, FIG.
The pressure is switched to the middle lower position to communicate the outside hydraulic line 51, and the pressure oil from the hydraulic pump 49 is guided to the straightening machine 1 without reducing the pressure. When a control signal is input to the upper drive unit 50b in FIG. 10, the position is switched to the upper position in FIG. 10, the external hydraulic line 51 is cut off and communicated with the tank, and the pressure from the hydraulic pump 49 to the straightening machine 1 is reduced. Block oil flow. When a control signal is input to both the upper and lower drive units 50b and 50a in FIG. 10, a transition position between the upper position and the lower position in FIG. 10 is established, and the hydraulic pump is driven in accordance with the magnitude of the control signal. The pressure oil from 49 is reduced in pressure and guided to the straightening machine 1. As shown in FIG. 1, a pipe 52 provided on the outermost side of the straightening machine 1 is connected to a distal end of the external hydraulic pipeline 51, and a pipe 53 is further connected to the pipe 52. . At the connection side ends of these pipes 52 and 53, a hydraulic auto coupler 54 having a check valve is provided.
a, 54b are provided so that the pipes 52,
Reference numerals 53 are detachably connected to each other. In addition, of these hydraulic auto couplers 54a and 54b, the coupler 5
4a is attached to an arm 55 fixed to the axis adjustment plate 39, and the coupler 54b is attached to the arm 35 fixed to the operation side chock 22. The end of the pipe 53 on the side opposite to the pipe 52 is connected to the hydraulic chamber 48 via an oil passage 58 provided in the rotary joint 56 and the spline sleeve 34. In this way, the pressure oil discharged from the hydraulic pump 49 is supplied to the hydraulic chamber 48 after being adjusted to a predetermined pressure by the proportional solenoid valve 50.

(2) Roller / Sleeve Assembly Unit Q Returning to FIGS.
Is a split roller 59a on the operation side as a horizontal roller, an outer sleeve 60 provided with the roller 59a on the outer periphery, and a roller 5a.
The operation side roller / sleeve assembly unit Q1 comprising a spacer 61 for positioning the spacer 9a and a stopper ring 62 for supporting the spacer 61 in the axial direction, and the split roller 5 which constitutes a horizontal roller together with the split roller 59a.
9b, an inner sleeve 6 provided with this roller 59b on the outer periphery
3. a spacer 64 for positioning the roller 59b;
And two roller / sleeve assembly units Q1, Q2 of a drive-side roller / sleeve assembly unit Q2 comprising a stopper ring 65 for supporting the spacer 64 in the axial direction.
It is composed of The outer sleeve 60 of the operation-side roller / sleeve assembly unit Q1 is engaged with the inner sleeve 63 of the drive-side roller / sleeve assembly unit Q2 to form a set of roller / sleeve assembly units Q. The outer sleeve 60 and the inner sleeve 63 are fitted so that the outer sleeve 60 can move in the axial direction with respect to the inner sleeve 63 and the rotation of the outer sleeve 60 is transmitted to the inner sleeve 63 (see FIG. 6). A) is done through.

At this time, the outer sleeve 60 of the operation-side roller / sleeve assembly unit Q1 has its operation-side end connected to the end of the connection sleeve 24 via the clamp ring 66 as shown in FIGS. It is detachably connected.
The inner end of the inner sleeve 63 of the drive roller / sleeve assembly unit Q2 is detachably connected to the end of the bearing holder 31 via a clamp ring 68 as shown in FIGS. Have been.

The main part of this embodiment lies in these two connection structures. Therefore, these will be sequentially described in detail.

(2-a) Connection Structure of Outer Sleeve 60 and Connection Sleeve 24 In FIGS. 1 and 5, a hollow portion 70 for accommodating a piston 69 movably in the axial direction is provided in the connection sleeve 24. An oil passage 71 communicating with the portion 70 is provided. A U-packing 72 is disposed at an end of the hollow portion 70 on the connection side with the oil passage 71, and a backup ring 73 is disposed between the U-packing 72 and the piston 69.

In the clamp ring 66, a first engagement portion 66A that contacts the piston 69 is opposed to the engagement surface 24A of the connection sleeve 24, and a second engagement portion 66B on the outer sleeve side is connected to the outer sleeve 60. Is inserted into the recessed portion 60A provided at the bottom. However, at this time, the external engagement relationship between the clamp ring 66, the connection sleeve 24, and the outer sleeve 60 (depending on the pure external shape alone when there is no action of the piston 69 or the later-described piston 74 with a rod). The relation is that the connection sleeve 24 and the outer sleeve 60 do not come into close contact with each other via the clamp ring 66, and a gap is formed somewhere therebetween. That is, in FIG. 5, the dimension L1 of the connection sleeve 24 and the tongue portion 60B of the outer sleeve 60 are shown.
L2 of the recess and the dimension L3 of the recess 60A, the clamp ring 6
6, the dimensions L4 and L5 are set such that L1 + L2 <L4 and L3> L5. In the clamp ring 66, there is provided a hollow portion 75 for accommodating a piston 74 with a rod movably in the axial direction. A spring 76 for urging the piston 74 to the left in FIG. 5 is provided in the hollow portion 75.

(2-b) Connection Structure between Inner Sleeve 63 and Bearing Holder 31 In FIGS.
Hollow portion 79 for housing piston 78 movably in the axial direction
And an oil passage 80 communicating with the hollow portion 79. The oil passage 80 communicates with the above-described oil passage 44, so that pressure oil from a hydraulic pump 49 is supplied. At this time, the oil passage 8 is
The oil passage 81 is connected separately from the oil passage 71, and the oil passage 81 is connected to the oil passage 71 in the connection sleeve 24 via a pipe 82. Thus, the pressure oil from the hydraulic pump 49 is also supplied to the oil passage 71. The hollow portion 79 in the bearing holder 31
U-packing 83
Are arranged, and a backup ring 84 is arranged between the U packing 83 and the piston 78.

In the clamp ring 68, a first engaging portion 68A that contacts the piston 78 faces the first concave portion 31A of the bearing holder 31, and a second engaging portion 68A on the inner sleeve side.
The engaging portion 68B is inserted into the second concave portion 31B of the bearing holder 31 together with the engaging portion 63A of the inner sleeve 63. However, at this time, similarly to the above (2-a), the engagement relationship on the outer shape between the clamp ring 68, the bearing holder 31, and the inner sleeve 63 (the piston 78 and the piston 85 with a rod 85 described later have no action at all). In the case of purely external shape only), the clamp ring 6
The bearing holder 31 and the inner sleeve 63 do not come into close contact with each other through the gap 8, and some gap is formed between them. That is, in FIG. 7, the dimensions L1 and L
2, L3, dimension L4 relating to the inner sleeve 63, and dimensions L5, L6, L7 relating to the clamp ring 68, L1> L
5, L2 <L6, L3> L4 + L7, L5 + L6 + L7 + L4 <L
It is configured such that 1 + L2 + L3 is all satisfied.
In the clamp ring 68, there is a piston 8 with a rod.
5 is provided with a hollow portion 86 for accommodating the movable member 5 in the axial direction. A spring 88 for urging the piston 85 leftward in FIG. 7 is provided in the hollow portion 86.

(3) Drive-side bearing unit R In FIG. 1, the drive-side bearing unit R is mounted on the drive-side chock 91 which is positioned and fixed on the shaft adjustment plate 39 with bolts 89 and keys 90. Rolling bearing 92 and bearing 9
2 and a shaft 93 which is positioned on the chock 91 via the bearing 92.

The drive side chock 91 is the operation side chock 2
2, the carrier bar 3 engaged with the shaft adjustment plate 39
6 is supported by the main body frame 2. The axial position of the rolling bearing 92 is held by a spacer 94, a nut 95, and a holding plate 96. One side (the left side in FIG. 1) of the shaft 93 fits into the inner circumference of the inner sleeve 63 and the bearing holder 31. The fitting of the shaft 93 with the inner sleeve 63 and the bearing holder 31 is such that the inner sleeve 63 and the bearing holder 31 can move in the axial direction with respect to the shaft 93, and the rotation of the shaft 93 is applied to the inner sleeve 63 and the bearing holder 31. The transmission is performed via a key 98 (see FIG. 6) and a key 99 (see FIG. 8), respectively. The other side (the right side in FIG. 1) of the shaft 93 is the universal joint 1
7 (see FIG. 3), and the motor 18a (same as above)
The rotation from is transmitted.

Although the upper roller and bearing structure 5 have been described above, the lower roller and bearing structure 7 are the same as the upper roller and bearing structure 5 except that the chocks 22, 91 are upside down. Is configured.

It should be noted that in the configuration described so far, the driving device 1 having the motor 18a and the speed reducer 18b
8 constitutes a rotational drive means, the drive-side chocks 91 and the rolling bearings 92 constitute drive-side bearing means for rotatably supporting the shaft, and include the operation-side chocks 22, the rolling bearings 23, the casings 25 and 26, and the piston 2
9 and the rolling bearing 30 constitute operating side bearing means for rotatably supporting the sleeve of the roller and sleeve assembly unit.

The piston 69 and the hollow portion 70 and the piston 78 and the hollow portion 79 constitute a hydraulic cylinder which expands and contracts by pressurized oil guided from a hydraulic source, and the clamp rings 66 and 68 serve as operating side bearings. And a roller / sleeve assembly unit, each of which engages through a predetermined axial gap and forms an engagement member that moves in the axial direction in accordance with the expansion and contraction operation of the hydraulic cylinder. Lot 85 with piston
And the spring 88 constitute elastic force generating means for generating an elastic force for separating the operation side bearing unit and the roller / sleeve assembly unit in the axial direction via the engaging member. A connecting means for detachably connecting the roller and sleeve assembly unit is constituted. Further, a pipe 52, a pipe 53, a rotary joint 56,
The oil passage 58, the hydraulic chamber 48, the oil passage 46, the pipe 45, the oil passage 44, the oil passage 81, the pipe 82, the oil passage 71, and the oil passage 80 have one end connected to the external hydraulic line and the other end having the hydraulic pressure. An in-machine hydraulic pipeline arranged in the roller steel straightening machine so as to be connected to the cylinder is formed, of which a pipeline 53, a rotary joint 56, an oil passage 58, a hydraulic chamber 48, an oil passage 46, a pipe 45, Oil passage 44, oil passage 81, piping 8
2. The oil passage 71 and the oil passage 80 constitute a movable portion installed in the operation-side bearing unit, and the conduit 52 constitutes another fixed-side portion. Further, a controller (not shown) and the electromagnetic proportional valve 51 constitute pressure adjusting means for adjusting the pressure of the pressure oil guided into the in-machine hydraulic line.

Next, the operation and action of the straightening machine 1 according to the present embodiment having the above-described configuration will be sequentially described below for a straightening operation and a roller replacement.

(I) During Straightening Work When straightening work is performed, each upper roller and bearing structure 5
In the lower roller and bearing structure 7, the electromagnetic switching valve 50 is switched to the lower position in FIG. 10 by the control signal of the controller. As a result, the pressure oil from the hydraulic pump 49 is supplied to the pipelines 52 and 53 at a relatively high pressure which is not reduced.
And the like, and then into the hollow portion 79 via the oil passage 46, the pipe 45, the oil passage 44, and the oil passage 80. Thus, the piston 78 moves rightward in FIG. 7 (extends the hydraulic cylinder) to move the clamp ring 68 rightward in the axial direction, and the second engaging portion 68B pushes the engaging portion 63A rightward in FIG. As a result, the inner sleeve 63
And the bearing holder 31 can be brought into close contact in the axial direction. That is, the gap originally formed between the clamp ring 68, the bearing holder 31, and the inner sleeve 63 is absorbed by the displacement of the piston 78 (elongation of the hydraulic cylinder), so that the bearing holder 31 is acted upon by the action of the clamp ring 68. And the inner sleeve 63 are brought into close contact. At this time, the pressure oil from the oil passage 44 is also guided into the hollow portion 70 via the oil passage 81, the pipe 82, and the oil passage 71, and the piston 69 moves leftward in FIG. Extension operation) to move the clamp ring 66 to the left side in the axial direction, and the second engagement portion 66B
By pressing the left side in FIG. 5, the outer sleeve 60 and the connection sleeve 24 can be brought into close contact with each other in the axial direction. That is, the clamp ring 66 and the connection sleeve 2 were originally used.
4. The gap formed between the outer sleeves 60 is
9 by the displacement of the hydraulic cylinder 9 (extension of the hydraulic cylinder).
4 and the outer sleeve 60 are brought into close contact with each other. As described above, by bringing the bearing holder 31 into close contact with the inner sleeve 63 and bringing the connection sleeve 24 into close contact with the outer sleeve 60, the operating-side bearing unit P and the roller / sleeve assembly unit Q are moved in the axial direction. Can be in close contact.

In this state, as shown in FIG. 2, the H-section steel 4 rolled, cut and cooled by the rolling equipment (not shown) on the upstream side of the pass is carried into the entrance table 10, and The carried-in H-section steel 4 is straightened by the # 1 to # 9 horizontal rollers of the straightening machine 1 to correct the warp or the bend, and then carried out at the delivery table 11.

In the case where the interval between the split rollers 59a and 59b is changed and set to an arbitrary value in order to change the size of the straightening material, the following is performed. That is, in FIG. 1, pressure oil from a hydraulic source (not shown) is introduced into one of the hydraulic chambers 42 and 43 formed between the piston 29 and the casings 26 and 28, and hydraulic oil (not shown) is supplied from the other. By discharging to the tank, the piston 29
Slides axially inside the housing 26. Accordingly, the inner sleeve 63 connected to the piston 29 via the bearing 30, the bearing holder 31, and the clamp ring 68 slides on the shaft 93 in the axial direction. At this time, since the outer sleeve 60 on the operation side is fixed, the inner sleeve 63 on the drive side slides in the axial direction with respect to the outer sleeve 60, and the interval between the split rollers 59a and 59b can be adjusted. it can.

(II) At the time of roller replacement When the correction is performed as in the above (I), the split rollers 59a and 59b are worn and deteriorated, and the type and size of the straightening material are greatly changed and the split roller 59a is changed. , 59b, it is necessary to change the shape of the split rollers 59a, 59b.
Replace 59b. Hereinafter, a series of procedures of the replacement work will be sequentially described in detail.

First, the operation side bearing unit P and the roller
The combined body of the sleeve assembly unit Q is separated from the drive side bearing unit R and pulled out from the straightening machine 1. The operation of pulling out the units P and Q is performed by the roller / sleeve assembly unit rearranging device together with the operation of pulling out the roller / sleeve assembly unit Q described later.
This will be described with reference to FIG. 3 and FIGS. 11, 12, and 13. FIG. 11 is a cross-sectional view showing a state of a trolley 106A (described later) when the roller / sleeve assembly unit Q is loaded, and FIG. 12 is a top view showing the configurations of the straightening machine 1 and the unit rearranging apparatus 100. FIG.
Is a roller straightening machine 1 and a unit rearranging apparatus 100 during the pulling out of the roller / sleeve assembling unit Q.
It is a sectional side view showing a situation.

In FIGS. 3 and 11 to 13, the unit rearranging apparatus 100 is provided with the rail 10 when the upper and lower roller supports 6, 9 of the straightening machine 1 are in the rearrangement position.
An upper rail 103 and a lower rail 104 which are located on the extensions of the rails 1, 102; a traversing rail 105 which is arranged in a direction orthogonal to the rails 103, 104 at a position halfway between the rails 103, 104 outside the straightening machine 1; The two trolleys 106A and 106B (shown in FIG. 12) movable on the rail 105 and the upper roller 103 and the lower roller 104, which run on the upper rail 103 and the lower rail 104, respectively. Upper and lower push-pull trucks 107a and 107b for pulling the respective operation-side bearing unit P and roller / sleeve assembly unit Q are provided. The upper and lower rails 103 and 104 are orthogonal to the path direction 109 (see FIG. 12) and extend to a predetermined position outside the straightening machine 1 in the roll axis direction (also the axis direction of the roller and sleeve assembly unit Q) 110. ing. However, the lower rail 104 is shown in FIG.
As shown in FIG. 3 and FIG. The intermediate position of the upper rail 103 and the lower rail 10
The traversing rails 105 are installed at the dividing positions of No. 4 so as to be orthogonal to them.
B can move in the running direction 111 (see FIG. 12).

As shown in FIG. 11, the trolley 106A includes a roller / sleeve assembly unit receiving pedestal 113 which is moved up and down by an elevating device 112, and a lower push-pull trolley 10 as shown in FIG.
7b is provided with an inner rail 114 on which the roller / sleeve assembly unit is mounted.
All roller / sleeve assembly units Q corresponding to the number of units can be stored at the same time. The trolley 106B has the same structure.

The operation of pulling out the combined body of the operating-side bearing unit P and the roller / sleeve assembly unit Q in the unit rearranging apparatus 100 configured as described above will be described step by step.

In FIG. 3 and FIGS. 11 to 13, first, each roller and bearing structure 5,
7 is a predetermined roller rearrangement position (vertical direction, pass direction,
After the coupling clamp 19 is closed, the empty trolley 106A (for the old roller and sleeve assembly unit) is repositioned 115 (FIGS. 12 and 1).
(See 3).

Next, in each of the upper roller and bearing components 5 and the lower roller and bearing components 7, the electromagnetic switching valve 50 is switched to the upper position in FIG. The hollow portion 79 that has operated the piston 78 while shutting off the oil
The hollow part 70 which operated the pressure oil and the piston 69 in the inside
The pressure oil in the inside is guided to the tank, and the pressure of the pressure oil in these hollow portions 79 and 70 is reduced to the tank pressure. At this time, the springs 76 and 88 in the hollow portions 75 and 86 are
, The close contact between the bearing holder 31 and the inner sleeve 63 and the close contact between the connection sleeve 24 and the outer sleeve 60 are released. That is, the bearing holder 31 and the inner sleeve 63 are not in close contact with each other via the clamp ring 68 (a state of play).
, And the connection sleeve 24 and the outer sleeve 60 are engaged via the clamp ring 66 in a non-contact state (a state with play). This state is shown in FIGS. 14 and 15, respectively. FIGS. 14 and 15 correspond to FIG.
6 is a diagram corresponding to FIG.

In such a state, the vertical push-pull bogies 107a and 107b are then moved along the upper rail 103, the lower rail 104, and the inner rail 114 of the horizontal bogie 106A to a predetermined position in the straightening machine 1 (see FIG. 13). Forward to the position indicated by the two-dot chain line).

Thereafter, the push-pull carts 107a, 107
Arms 107aA (see FIG. 18 described later) and 107bA (not shown) provided to protrude from 7b engage with arms 116 (same) provided on upper and lower operation side chock 22 (see FIG. 18), respectively. Then, in this engaged state, the key 40 that positions the operation side chock 22 in the roller axis direction is removed (see FIG. 1). At this time, FIG.
, Push-pull trucks 107a and 107b for rotating the clamp rings 66 and 68 (described later).
1 (see FIGS. 1 and 9) is inserted into the spline sleeve 34 so that the spline sleeve 34 can be rotated.

Then, the push-pull carts 107a, 107
7b retracts to the roller / sleeve assembly unit Q support position of the traversing carriage 106A and stops. At this time, between the upper operation side chock 22 and the upper rail 103, between the lower operation side chock 22 and the lower rail 104, between the upper drive side chock 91 and the upper rail 103, and the lower drive side chock 91
A not-shown choke clamp is provided between the push-pull carriage 1 and the lower rail 104, respectively.
After the 07a and 107b grasp the upper and lower operation side chock 22 via the arms 107aA and 107bA, only the operation side chock clamp is opened. As a result, when the push-pull carts 107a and 107b are retracted and stopped, the drive-side bearing unit R remains in the straightener 1, and the operation-side bearing unit P and the roller sleeve assembly separated from the drive-side bearing unit R. The combined body with the unit Q is extracted from the shaft 93. At the time of release, the hydraulic auto couplers 54a and 54b are automatically disconnected, and the coupler 54a on the shaft adjustment plate 39 side is disconnected.
And the coupler 54b on the operation side chock 22 side. FIG. 17 is a cross-sectional view showing a state of the driving-side bearing unit R at this time, and FIG. 18 is a cross-sectional view showing a state of a combined body of the operation-side bearing unit P and the roller / sleeve assembly unit Q.

Then, the lifting / lowering device 11 of the trolley 106A
2, the roller / sleeve assembly unit receiving base 113 is raised, and the roller
The sleeve assembly unit Q is supported.

In this state, the operation side bearing unit P and the roller / sleeve assembly unit Q are disconnected. That is, with the combined body of the unit P and the unit Q supported by the gantry 113 as described above, the sleeve rotating portions 107a of the push-pull carts 107a and 107b
When the spline sleeve 34 is rotated by 45 ° as shown in FIG. 16 at B and 107bB, this rotation is transmitted to the spline shaft 32 via the spline formed on the spline sleeve 34, and further, the bearing fixed to the spline shaft 32. Transmitted to the holder 31, the bearing holder 3
1 rotates 45 °. FIG. 19 is a sectional view showing this rotated state. FIG. 19 is a diagram corresponding to FIG. 8 described above. As can be seen by comparing FIG. 19 and FIG. 8, the 45 ° rotation of the bearing holder 31 causes the circumferential position of the bearing holder engaging projection 31C to be shifted from the circumferential position of the inner sleeve engaging portion 63A, As a result, the axial engagement between the bearing holder 31 and the inner sleeve 63 is released.
Can be freely released in the axial direction.

At this time, a key 118 (see FIG. 7) is provided between the bearing holder 31 and the clamp ring 68, and the rotation of the bearing holder 31 is transmitted to the clamp ring 68. Further, a key 119 (same as above) is provided between the clamp ring 68 and the connection sleeve 24.
The rotation of the clamp ring 68 is transmitted to the connection sleeve 24. Further, a key 120 (see FIG. 5) is provided between the connection sleeve 24 and the clamp ring 66. The rotation of the connection sleeve 24 is further transmitted to the clamp ring 66, and the clamp ring 66 is rotated by 45 °. I do. FIG. 20 is a sectional view showing this rotated state. FIG. 20 is a diagram corresponding to FIG. 6 described above. As can be seen by comparing FIG. 20 and FIG.
Due to the 45 ° rotation of the clamp ring 66, the circumferential position of the clamp ring second engaging portion 66B is shifted from the circumferential position of the outer sleeve tongue portion 60B, and the axial engagement between the clamp ring 66 and the outer sleeve 60 is thereby reduced. Since the engagement is released, the outer sleeve 60 can be freely detached from the clamp ring 66 in the axial direction.

After the above state, the push-pull bogies 107a and 107b are retracted to the starting points, so that the roller / sleeve assembly unit Q having the inner and outer sleeves 63 and 60 is left on the transverse bogie 106A. At the same time, the operation side bearing unit P is pulled out. FIG. 13 shows this state. As shown, only the drive side bearing unit R remains in the straightening machine 1, the roller / sleeve assembly unit Q is loaded on the traversing carriage 106A, and only the operation side bearing unit P is placed on the push-pull carriages 107a and 107b. It is attached.

Finally, the trolley 106A loaded with the old roller / sleeve assembly unit Q as described above.
Is traversed to the evacuation position 121, and at the same time, the traversing carriage 106B loaded with the new roller and sleeve assembly unit Q provided with the new split rollers 59a and 59b is traversed to the rearrangement position 115. FIG. 12 shows the state at this time.

Thereafter, the new roller / sleeve assembly unit Q is incorporated into the straightening machine 1 in a procedure reverse to that described above, and roller replacement is completed.

As described above, according to the straightening machine 1 of the present embodiment, during the straightening operation, the operating side bearing unit P and the roller / sleeve assembly unit Q are brought into close contact in the axial direction, so that the straightening accuracy is high. Can be maintained. On the other hand, when reassembling the roller / sleeve assembly unit Q for roller replacement, the close contact between the bearing holder 31 and the inner sleeve 63 and the close contact between the connection sleeve 24 and the outer sleeve 60 are released, respectively. Since the close contact between the unit P and the roller / sleeve assembly unit Q in the axial direction can be released, the roller / sleeve assembly unit Q can be released from the operation-side bearing unit P and easily removed. Therefore, the rearrangement of the roller / sleeve assembly unit Q can be easily performed.
Further, at this time, the biasing force of the springs 76 and 88 actively separates the operation side bearing unit P and the roller / sleeve assembly unit Q, so that the roller / sleeve assembly unit Q can be easily rearranged. Can,
Full automation or partial automation can be achieved in conjunction with the use of the hydraulic auto couplers 54a and 54b. This allows
The operation time can be improved by shortening the time required for roller replacement, and the number of workers engaged in roller replacement can be reduced, so that productivity can be increased. In addition, since the work of the worker in a place with a poor scaffold can be reduced, safety is improved.

[0058]

According to the present invention, the roller / sleeve assembly unit can be easily replaced without lowering the correction accuracy.

[Brief description of the drawings]

FIG. 1 is a side sectional view illustrating an installation structure of an upper roller and a bearing structure provided in a roller shape steel straightening machine according to an embodiment of the present invention.

FIG. 2 is a front view illustrating the entire structure of a roller shape steel straightening machine.

FIG. 3 is a side view showing the entire structure of the roller shape steel straightening machine.

FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.

FIG. 5 is an enlarged sectional view showing a detailed structure of a portion A in FIG.

FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG.

FIG. 7 is an enlarged sectional view showing a detailed structure of a portion B in FIG.

FIG. 8 is a transverse sectional view taken along the line VIII-VIII in FIG. 7;

FIG. 9 is a view as viewed from an arrow C in FIG.

FIG. 10 is a system diagram of a hydraulic supply system.

FIG. 11 is a cross-sectional view illustrating a state of the traversing carriage when the roller / sleeve assembly unit is loaded.

FIG. 12 is a top view illustrating a configuration of a straightening machine and a unit rearranging device.

FIG. 13 is a side sectional view showing the configuration of a roller straightening machine and a unit rearranging device during the pulling-out of the roller / sleeve assembly unit.

14 is an enlarged cross-sectional view illustrating a state where the structure illustrated in FIG. 7 is in a non-contact state.

FIG. 15 is an enlarged cross-sectional view illustrating a state where the structure illustrated in FIG. 5 is in a non-contact state.

FIG. 16 is a diagram illustrating a state in which a sleeve rotating portion of the push-pull cart is inserted into a spline tube.

FIG. 17 is a cross-sectional view showing a state of the drive-side bearing unit separated from the combined body of the operation-side bearing unit and the roller / sleeve assembly unit.

FIG. 18 is a cross-sectional view illustrating a state of a combined body of the operation side bearing unit and the roller / sleeve assembly unit separated from the drive side bearing unit.

FIG. 19 is a cross-sectional view along a line IXX-IXX in FIG. 14 showing a state in which the bearing holder is rotated by 45 °.

FIG. 20 is a cross-sectional view taken along the line XX-XX in FIG. 15 showing a state where the clamp ring is rotated by 45 °.

[Explanation of symbols]

REFERENCE SIGNS LIST 18 drive device (rotation drive means) 22 operation-side chock (operation-side bearing means) 23 rolling bearing (operation-side bearing means) 25 casing (operation-side bearing means) 26 casing (operation-side bearing means) 29 piston (operation-side bearing means) 30) Rolling bearing (operating side bearing means) 44 Oil passage (movable side, hydraulic line in machine) 45 Pipe (movable side, hydraulic line in machine) 46 Oil passage (movable side, hydraulic line in machine) 48 Hydraulic Room (movable side part, hydraulic line in machine) 49 Hydraulic pump (hydraulic source) 50 Proportional solenoid valve (pressure adjusting means) 51 Hydraulic line outside machine 52 Line (fixed side part, hydraulic line in machine) 53 Line ( Movable part, hydraulic line in machine 54a, b Hydraulic auto coupler 56 Rotary joint (movable part,
Oil passage (in-machine hydraulic line) 58 Oil passage (movable side, hydraulic line in machine) 60 Outer sleeve (sleeve) 63 Inner sleeve (sleeve) 66, 68 Clamp ring (engaging member) 69 Piston (hydraulic cylinder) 70 Hollow part ( Hydraulic cylinder) 71 Oil passage (movable part, hydraulic line in machine) 74 Rod with piston (elastic force generating means) 76 Spring (elastic force generating means) 78 Piston (hydraulic cylinder) 79 Hollow part (hydraulic cylinder) 80 Oil passage (Movable side part, hydraulic line in machine) 81 Oil passage (movable side part, hydraulic line in machine) 82 Piping (movable side part, hydraulic line in machine) 85 Lot with piston (elastic force generating means) 88 Spring (elastic force) Generating means) 91 Drive-side chocks (drive-side bearing means) 92 Rolling bearings (drive-side bearing means) P Operation-side bearing unit Q Roller three Assembly unit R drive side bearing unit

Continuing on the front page (72) Inventor Shuichi Yamashina 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Yukio Fujii 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Stock In company

Claims (5)

[Claims] 1. A roller / sleeve assembly unit having a plurality of split rollers arranged on the outer periphery of a sleeve, a shaft which is rotated by a driving force from a rotation driving means, and a driving side bearing means for rotatably supporting the shaft. A drive-side bearing unit for transmitting the rotation of the shaft to the roller-sleeve assembly unit and rotating the same; and an operation-side bearing unit having operation-side bearing means for rotatably supporting the sleeve of the roller-sleeve assembly unit. Connecting means for detachably connecting the operating-side bearing unit and the roller / sleeve assembly unit, wherein the connecting means is guided from a hydraulic pressure source. A hydraulic cylinder that expands and contracts with pressurized oil, and each of the operating-side bearing unit and the roller-sleeve assembly unit And an engaging member that engages through a predetermined axial gap and moves in the axial direction in accordance with the expansion and contraction operation of the hydraulic cylinder,
A roller section straightening machine, wherein the operation side bearing unit and the roller / sleeve assembly unit are brought into close contact with each other in the axial direction via the engagement member when the hydraulic cylinder is in an extended state. . 2. The straightening machine according to claim 1, wherein said connecting means has an elastic force for axially separating said operating-side bearing unit and said roller-sleeve assembly unit through said engaging member. A roller shape steel straightening machine further comprising an elastic force generating means for generating. 3. A straightening machine having a straightening machine according to claim 1, wherein a hydraulic source for supplying pressure oil to said hydraulic cylinder and a pressure oil from said hydraulic source are supplied to said roller straightening machine. An external hydraulic line leading to the straightening machine, and an internal hydraulic line disposed in the roller type steel straightening machine such that one end is connected to the external hydraulic line and the other end is connected to the hydraulic cylinder. Pressure adjusting means for adjusting the pressure of pressure oil guided into the in-machine hydraulic line. 4. The section steel straightening equipment according to claim 3, wherein the in-machine hydraulic pipeline includes a movable side portion installed in the operation side bearing unit, and a fixed side portion other than the movable side portion, and And a movable part and a fixed part are detachably connected to each other via a hydraulic auto coupler having a check valve. 5. A roller / sleeve assembly for connecting a roller / sleeve assembly unit provided on a roller straightening machine and having a plurality of split rollers arranged on the outer periphery of a sleeve to an operation-side bearing unit for rotatably supporting the sleeve. In the unit connection method, an engaging member is engaged with each of the roller-sleeve assembly unit and the operation-side bearing unit via a predetermined axial gap, and the unit is extended by pressure oil guided from a hydraulic pressure source. The roller / sleeve assembly unit is brought into close contact with the operation-side bearing unit in the axial direction by absorbing the predetermined axial gap of the engaging member using an extension stroke of a hydraulic cylinder. How to connect the sleeve assembly unit.