JP2002254279A - Facing system for h steel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facing system for an H steel wherein the system is made compact with a plane view configuration arranged smaller, a control system required for positioing of a grindstone head is simplified to reduce costs, and main parts of the H steel can be efficiently ground. SOLUTION: The facing system comprises a conveyor to carry in and out the H steel 8 in the horizontal direction with the steel vertically placed, a lifting guide vertically mounted at a conveyor's lateral position between a carrying-in side and a carrying-out side of the conveyor, an elevating body freely moving up and down along the lifting guide, a grind wheel 66 to face entire inner and outer faces of a flange from both side faces of a web of the H steel, a grindstone head rotatably supporting the grind wheel 66, a swinging means to turn the direction of the grindstone head in the horizontal and vertical directions, and a motor 69 rotating the grind wheel 66, wherein a grinding unit 62 is arranged slidably in the horizontal direction toward the H steel with regard to the elevating body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an H-shaped steel suitable for removing an oxide film (black scale) at a joint portion of an H-shaped steel used for a building or the like and a burr generated on the inner surface of the front and back surfaces by perforation. Surface grinding device.

[0002]

2. Description of the Related Art Generally, H is used for steel frames of buildings.
The shaped steel is cut to a required size, and both flanges (side plate portions) and webs (middle plate portions) at both end portions or one end portion are perforated in a predetermined pattern. It is assembled at a construction site by abutting the plate to align the positions of the holes and tightening the two with high-strength bolts.

[0003] Here, since burrs and burrs generally occur in the seam hole portion due to the drilling process, they have to be removed. In addition, in order to stabilize the coefficient of friction with the seam plate, the seam hole portion has to be removed. It is necessary to grind the surface to remove the oxide film.

Conventionally, such a grinding operation has been performed manually by a worker using a handy tool called a disk sander. However, this work requires not only a considerable amount of labor in a harsh working environment where dust and noise are severe, but also in a normal stationary state where the H-shaped steel is formed into an H-shape in which the web is horizontal. Only the outer surfaces of the upper surface and the left and right flanges and the inner surface of both flanges continuous with the upper surface of the web can be machined. To machine the lower surface of the web and the inner surfaces of both flanges continuous with the lower surface, the H-section steel is turned upside down. There is a need. For this reason, there was a problem that the work efficiency was low and the danger of the work was high.

In order to automate such an operation, the present applicant has provided a vertical column slidable along a horizontal guide, and two upper and lower supports slidable in the vertical direction along the vertical column. A drive mechanism is provided for arranging the bodies and symmetrically moving and parallelly moving each of the supports, and each of the supports is provided with a grinding wheel so as to face each other vertically via an arm-shaped member. H-shaped steel fixed on a roller conveyor by a grinding wheel mounted on each of the grinding wheel heads, which are mounted on each of the grinding wheel heads, which are vertically arranged opposite to each other, by mounting the grinding wheel head for use and its swinging mechanism and the telescopic mechanism of the arm-shaped member (Japanese Patent Application Laid-Open No. 58-114854) proposes an H-section steel surface polishing apparatus in which the main part is polished (grinded) while the upper and lower halves are copied.

[0006]

However, in the apparatus proposed above, the H-shaped steel is placed in a normal stationary state, that is, in a state where the H-shaped steel is H-shaped so that the web is horizontal, the web and Surface grinding of both flanges (surface polishing)
Therefore, the horizontal arrangement of the web having a larger surface area than that of the flange naturally increases the shape of the apparatus in plan view, making it impossible to reduce the size of the apparatus.

In the case where the H-section steel is ground in an H-shaped stationary state, the positioning is performed based on the outer surface of one flange of the H-section steel. Therefore, in H-beams of different sizes, the position of one flange is unchanged, but the position of the web is displaced in the vertical direction and the position of the other flange is displaced in the horizontal direction. It is necessary to perform positioning in accordance with the displacement of the flange. Therefore, a control system for positioning the grindstone head becomes complicated, and a large cost is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to reduce the size of the apparatus by reducing the shape in plan view, and to provide a control system required for positioning the grinding wheel head. An object of the present invention is to provide a surface grinding apparatus for H-section steel which can simplify and reduce costs and can efficiently grind the main part of the H-section steel.

[0009]

In order to achieve the above object, a surface grinding apparatus according to a first aspect of the present invention loads and unloads an H-section steel in a vertical (I-shaped) state in a horizontal direction. A conveyor, a pair of elevating guides erected at the side of the conveyor between a carry-in side and an unloading side of the conveyor, a pair of elevating bodies movable up and down along the elevating guides,
A pair of grinding wheels for surface grinding from both sides of the web of the section steel to the inner and outer surfaces of the flange, a grinding head for rotatably supporting the grinding wheel, and a swing for rotating the direction of the grinding head in horizontal and vertical directions. A grinding unit for rotating the grinding wheel, and a pair of grinding units disposed so as to be slidable in the horizontal direction toward the H-section steel with respect to the elevating body.

According to the first aspect of the present invention, the main portion of the web and both flanges can be surface-ground in a state where the H-section steel is formed into an I-shape in which the web is vertical, and the width direction dimension is smaller than that of the web. By arranging the small flanges horizontally, the shape of the device in plan becomes naturally small, and the device can be made compact.

According to the first aspect of the present invention, the direction of the grindstone head is rotatable in a horizontal direction and a vertical direction, that is, it is rotatable in three directions of horizontal horizontal direction, upward direction and downward direction.
Therefore, the left and right surfaces of the vertical web and the inner and outer surfaces of the horizontal upper and lower flanges can be ground by the two grinding wheels. Furthermore, since the H-section steel is ground in a vertically placed state, the positioning can be performed with reference to the center of the vertical web. Therefore, even in the case of H-beams having different sizes, the position of the lower surface of the lower flange is naturally constant, and the positions of the upper surface (inner surface) of the lower flange and the left and right surfaces of the web are also changed by the change in thickness (for example, 8mm-20m
m), the origin positions of the grindstone heads on the lower flange lower surface, the lower flange upper surface, and the left and right surfaces of the web are substantially constant. As a result, a control system for positioning each grinding wheel head can be simplified, and the cost can be reduced.

Further, the surface grinding apparatus according to a second aspect of the present invention is characterized in that an elevating guide section on which the pair of elevating bodies is mounted is provided upright on both right and left sides of the conveyor between a carry-in side and an unloading side of the conveyor. A horizontal shaft having a pair of sprockets fitted thereon is disposed at the upper and lower ends of the lifting guide, a chain is extended between the pair of upper and lower sprockets, and the right and left lifting bodies are adjusted to the right and left chains respectively. By connecting and lifting one of the left and right lifting bodies,
It is characterized in that the other elevating body is moved up and down in synchronization with the elevating body.

It is an object of the present invention to stabilize the attitude of the H-section steel and to simplify the drive system of the elevating body.
In other words, when the H-section steel is ground vertically, the posture generally tends to be unstable. However, if the grinding is performed simultaneously in symmetrical positions, the posture of the H-section steel becomes stable due to the balance of the acting force. According to the configuration of Item 2, the height positions of the right and left elevating bodies are adjusted.

In the surface grinding of the H-section steel, most of the work is performed to grind the surface of the web and the entire area of the seam hole portion formed in both flanges, and the seam holes of the flange are symmetrical in all directions with respect to the web. This is a prerequisite for performing the above-mentioned symmetric surface grinding.

According to a third aspect of the present invention, in the surface grinding apparatus, both sides of the web of the H-section steel are roll-pressed on the loading side and the delivery side of the grinding unit in the longitudinal direction of the conveyor to hold the H-section steel. A pair of left and right transfer pinch rollers for advancing along the conveyor is arranged, and further, the transfer pinch rollers on the transfer side are further transferred to the transfer side, and the two side surfaces of the web of the H-section steel are compacted by rolling. A pinch roller is provided.

By using the pinch roller for stabilizing the straight running, even the short H-shaped steel can be smoothly ground in a stable straight running posture by the cooperation of the pinch roller for conveyance.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a surface grinding apparatus 1 for an H-section steel according to the present invention has a base 2 in which four hollow square steels are combined in a crossbeam by welding. That is, base 2
Is composed of a lower first bolster 3 and an upper second bolster 4, and a non-driven loading-side roller conveyor 5 and a unloading-side roller conveyor 6 are fixed on the second bolster 4, respectively. A gap 7 is provided between the carry-in roller conveyor 5 and the carry-out roller conveyor 6 so that a grindstone head 67 described later can pass therethrough.

FIG. 2 is a side view of the H-section steel surface grinding apparatus 1, in which the right side is the loading side of the H-section steel 8 and the left side is the unloading side. On the upper surface of the first bolster 3 immediately inside the second bolster 4 on the loading side, a pair of right and left prisms 9 slightly shorter than the height of the H-shaped steel 8 having the largest dimension are erected. The loading-side roller conveyor 5 is inserted and supported in the middle area of the roller. Also, on the upper surface of the first bolster 3 immediately inside the second bolster 4 on the carry-out side, a rectangular frame 10 slightly higher than the height of the H-beam 8 having the largest dimension is provided.
Is erected. The square frame 10 is made of hollow square steel, and the first half of the roller conveyor 6 on the carry-out side is inserted and supported in the lower region of the central space of the square frame 10. The H-shaped steel 8 conveyed on the roller conveyors 5 and 6 passes through the center of the inner space of the square frame 10.

The mutually opposing surfaces of the prism 9 and the square frame 1
As shown in FIG. 3, a bracket 14 protruding in the horizontal direction is fixed to the mutually opposing surfaces of the 0 column portions 10a. This bracket 14 is, as shown in FIG.
The upper and lower parts of the bracket 6 are formed in a pair of upper and lower parts at a position slightly higher than the upper surface. Of the four vertical rotation shafts 15 in the front, rear, left and right directions, two left and right vertical rotation shafts 15 located inside the prism 9
Extends along substantially the entire height of the prism 9. The lower end of the vertical rotation shaft 15 extends slightly below the lower end of the prism 9, and a sprocket 16 is fitted to the lower end. On the other hand, two left and right vertical rotation shafts 15 located inside the pillar portion 10a of the square frame 10 also extend along substantially the entire height of the pillar portion 10a. The lower end of the vertical rotation shaft 15 extends slightly below the lower end of the pillar 10a, and a sprocket 17 is fitted to this lower end. As shown in FIG. 1, the upper ends of the two vertical rotation shafts 15 of the pillar portion 10 are larger than the upper surface of the beam portion 10 b of the square frame 10 as viewed from the loading side. The driven gear 18 projects upward and the driven gear 18 is fitted. As shown in FIG. 1, the upper end of the vertical rotation shaft 15 on the right side as viewed from the loading side protrudes slightly upward from the upper surface of the beam portion 10b of the square frame 10, and the driven sprocket 19 is fitted to this protruding end. Have been.

Upper and lower brackets 1 of four vertical rotating shafts 15
4, a sprocket 22 is integrally fitted at an upper position, and an obtuse portion of a triangular arm plate 23, which forms a substantially isosceles triangle, is pivotally supported in a horizontal direction at a lower position. Have been. As shown in FIGS. 3 and 4, a sprocket 2 integrally connected to a first acute angle portion of a triangular arm plate extending to the center side of the roller conveyor by a common rotary shaft 24 is provided.
5 and a pinch roller 26 are rotatably mounted. A chain 27 is stretched between the upper sprocket 25 and the sprocket 22 of the vertical rotating shaft 15, and the contour of the tip of the triangular arm plate 23 is formed slightly smaller than the outer peripheral portion of the lower pinch roller 26. Have been.

As shown in FIGS. 5 and 6, a vertical cylinder 3 for swinging the triangular arm plate 23 in the horizontal direction is provided on the upper surface of the middle part in the left-right direction of the two front and rear second bolsters 4.
1 are provided respectively. The piston rod 32 of the vertical cylinder 31 extends downward inside the second bolster 4. L inside the two front and rear second bolsters 4
The L-shaped arms 33 are housed in a pair on the left and right sides, and the right-angled portion of each L-shaped arm 33 is rotatably supported on the side wall of the second bolster 4 by a pin 34. The tip of the horizontal portion of the L-shaped arm 33 extends to the piston rod 32 of the vertical cylinder 31 in the second bolster 4 and is rotatably fitted into a fitting hole 35 formed at the lower end of the piston rod 32. Have been combined. The vertical end of the L-shaped arm 33 extends upward through the cutout hole 36 of the second bolster 4 and, as shown in FIG. It is pivotally connected to the second acute angle portion. The pinch roller 2 at the first acute angle portion of the triangular arm plate 23 is operated by the shortening operation of the piston rod 32 of the vertical cylinder 31.
6 rolls the web side surface of the H-section steel 8.

On the front side (the carry-in side) of the carry-in pinch roller 26 on the carry-in side, a pair of right-and-left stabilizing pinch rollers 26a having substantially the same configuration as the carry pinch roller 26 is disposed. The reference numerals of the members related to the straight-running stabilizing pinch roller 26a are indicated by adding “a” to the reference numerals used for the related members of the transport pinch roller 26. That is,
In FIG. 6, 23a is a triangular arm plate, 37a is a tie rod, 3
3a is an L-shaped arm, 31a is a vertical cylinder, 32a is a piston rod, 35a is a fitting hole, and 36a is a notch hole. In this embodiment, since the pinch roller 26a for stabilizing the straight running is not driven, there is no force for transporting the H-section steel 8, but
If necessary, the pinch roller 26a for stabilizing the straight running may also be configured to have a conveying force of the H-shaped steel 8 as a driving type that is also used for conveying.

As shown in FIGS. 1 and 2, a transfer motor 41 with an encoder is disposed on the upper surface of the square frame 10 at a position slightly to the left of the center when viewed from the loading side, with its rotary shaft oriented sideways. Have been. This transport motor 41
Is transmitted to a rotating shaft 43 protruding in the vertical direction of the gear box 42 via an adjacent gear box 42. A drive gear 44 is fitted on the upper rotating shaft 43, and a driving sprocket 45 is fitted on the lower rotating shaft 43. The upper drive gear 44 is meshed with the above-described driven gear 18 fitted to the upper end of the unloading-side vertical rotation shaft 15 on the left side in FIG. 1 (right side in FIG. 4), and the lower drive sprocket 45 and the right side in FIG. The driven sprocket 1 fitted to the upper end of the unloading-side vertical rotary shaft 15 (left side in FIG. 4).
9 and a chain 47 is extended. The sprocket 17 at the lower end of the two left and right vertical rotation shafts 15 on the unloading side
A chain 48 extending in the front-rear direction extends between the right and left sprockets 16 at the lower ends of the two left and right vertical rotation shafts 15 on the loading side. And the transport motor 4
By one forward rotation, four front, rear, left and right vertical rotation shafts 15 are simultaneously rotated at the same rotation speed. At this time,
Needless to say, the two left and right vertical rotation axes 15 rotate in the reverse direction, and the two right and left vertical rotation axes 15 rotate in the forward direction.

A rail 51 as a vertical guide is vertically fixed to the loading side surface of the two pillars 10a of the square frame 10, and a vertical body 52 having a rail nut is slidably mounted on the rail 51. Is engaged. A pair of upper and lower sprockets 53 and 54 are fitted near the upper and lower ends of each rail 51, and a chain 55 extends between the pair of sprockets 53 and 54. Both ends of the chain 55 are connected to the upper and lower portions of the elevating body 52. The upper and lower four sprockets 53 and 54 are connected to each other by two upper and lower synchronization horizontal rotation shafts 56 as shown in FIG.

The pillar 1 on the right side in FIG.
A vertical cylinder 60 with an encoder is fixed to the upper end of Oa via a bracket plate 59 on the loading side surface. The lower end of the piston rod 61 of this vertical cylinder 60 is connected to the right and left elevating body 52 of the pair of left and right elevating bodies 52 in FIG. It descends and rises according to the height.

The lifting unit 52 is provided with a grinding unit 62 as shown in FIGS. The grinding unit 62 is slidable in the horizontal direction toward the H-shaped steel 8 by a sliding engagement structure between the grinding unit 62 and the lifting / lowering body. The main body 6 of a horizontal cylinder 65 with an encoder is
The piston rod 63 of the horizontal cylinder 65 is connected to the rear end of the grinding unit 62. The grinding unit 6 is moved by the expansion and contraction of the horizontal cylinder 65.
2 slides back and forth toward the H-section 8.

As shown in detail in FIG. 8, the grinding unit 62 includes a grinding wheel 66 for grinding the web side surface and the inner and outer surfaces of the flange of the H-section steel 8, and a grinding wheel head rotatably supporting the grinding wheel 66. 67, a oscillating motor 68 as oscillating means for rotating the grinding head 67 in the horizontal and vertical directions, and a grinding motor 6 for rotating a grinding wheel 66
9 is provided. The grinding motor 69 is mounted on one end of the hollow longitudinal member 70, and a driving pulley 71 housed inside the hollow longitudinal member 70 is mounted on the rotating shaft of the grinding motor 69. A driven pulley 72 is housed inside the other end of the elongated member 70, and a timing belt 74 is stretched between the driving pulley 71 and the driven pulley 72.

At the other end of the longitudinal member 70, a grindstone head 67 is provided.
Are provided so as to be rotatable around the fitting portion 73.
A bevel gear unit 77 is housed in the grindstone head 67, and one bevel gear 78 of the two bevel gears meshing with each other at a right angle cross is connected to the driven pulley 72, and the other bevel gear 79 is a grinding wheel 66. It is directly connected to the axis. On the outer surface of the grindstone head 67, a driven pulley portion 80 whose axis coincides with the rotation axis of the driven pulley 72 is integrally formed, and between the driven pulley portion 80 and the driving pulley 81 of the oscillating motor 68. The timing belt 75 is suspended.
The forward / reverse rotation of the swing motor 68 causes the grindstone head 67 to swing in the range of 180 ° in the vertical direction.

The outer peripheral surface of the grindstone head 67 has an arcuate surface 83 over a range of approximately 180 ° around the axis of the bevel gear 78.
Are formed at the center (0 ° position) and both ends (+ 90 ° position, −90 ° position) of the arc surface 83 in the circumferential direction.
One lock hole 82 is formed. On the other hand, the longitudinal member 7
At 0, a grinding wheel head lock cylinder 84 is disposed adjacent to the swinging motor 68, and a piston rod 85 of the grinding wheel head lock cylinder 84 projects toward the outer peripheral surface of the grinding wheel head 67. Then, the tip end of the piston rod 85 is selectively fitted into the lock hole 82 on the outer peripheral surface of the grindstone head 67, so that the grindstone head 67 is moved to three rotation positions (horizontal 0 °) corresponding to the three lock holes 82. , Upward + 90 °, downward -90 °) to lock the grindstone head 67.

The surface grinding apparatus 1 for an H-section steel is constructed as described above, and the grinding process by this apparatus 1 is performed as follows. First, prior to loading of the H-section steel 8, the vertical cylinder 60
And the pair of left and right grinding units 62 are moved to the upper end of the square frame 10 in advance. Further, the vertical cylinders 31 and 31a are extended and all the pinch rollers 26 and 26a for carrying and for stabilizing the straight running are fully opened. In this state, the front end side of the H-section steel 8 is placed on the loading-side roller conveyor 5. When the front end of the H-beam 8 reaches the position between the transport pinch rollers 26, the two vertical cylinders 31 on the loading side are shortened, and the front end of the H-beam 8 is rolled by a pair of left and right pinch rollers 26. Press and hold. When the transport motor 41 is driven in this state, the transport pinch roller 26 starts to rotate simultaneously on the carry-in side and the carry-out side, and
Is started automatically. Note that the pinch roller 26a for stabilizing the straight running is not driven, and simply rotates freely in accordance with the feed of the H-shaped steel 8.

When the front end of the H-section steel 8 is detected by the photoelectric sensor 87 at the center of the mounting plate 86 provided at the front end of the carry-in roller conveyor 5, the position is set as the origin, and the H-shape is determined from the origin position. At the stage when the steel 8 is further carried in by a predetermined amount, the driving of the transport motor 41 is temporarily stopped, and instead, the grinding motor 69 is rotated to rotate the grinding wheel 66 so that the grinding wheel head 67 is moved to a predetermined portion of the H-shaped steel 8. Move. Normally, grinding is performed in the order of the upper flange outer surface → the upper flange inner surface → the web surface → the lower flange inner surface → the lower flange lower surface of the H-section steel 8. FIG. 9 shows the grinding pattern of each surface of the flange and the web. These grinding patterns are obtained by combining the movement of the grinding unit 62 and the forward and backward movement of the H-section steel 8. During the above-mentioned grinding process, one of the grinding units 62 is disposed at the center of the outer surface of the upper and lower flanges so that the left and right grinding wheel heads 67 do not interfere with each other.
Retreats on the way, and the other grinding head grinds the center.

In order to perform the grinding of the grinding wheel head 67 in the above-described order, the grinding wheel 66 or the grinding wheel head 67 changes its direction in the downward, upward, lateral, downward, and upward directions by the rotation of the swinging motor 68. The grinding unit 62 is moved vertically by a vertical cylinder, and is slid horizontally by a horizontal cylinder 65.

For example, when grinding the outer surface of the upper flange with the grinding wheel 66, the grinding wheel 66 is turned downward as shown by the dashed line in FIG. 8B, and at this time, the piston rod 85 of the grinding wheel head lock cylinder 84 is locked with the lock hole 82. Fits. Next, when grinding the inner surface of the upper flange with the grinding wheel 66, the grinding wheel 6
6 is removed from the ground surface of the H-section steel 8 once,
The piston rod 85 of the grindstone head lock cylinder 84 is once pulled out, and the grindstone head 67 is rotated 180 ° clockwise in FIG. 8 by the oscillating motor 68, and the piston rod 85 of the grindstone head lock cylinder 84 is rotated at this rotational position. It fits in another lock hole 82. And the vertical cylinder 60
The inner surface of the upper flange is ground by adjusting the vertical and horizontal positions of the grindstone head 67 by the horizontal cylinder 65.

When grinding the side surface of the web, the grinding wheel 66 is detached from the inner surface of the upper flange of the H-section steel 8 and the grinding wheel head lock cylinder 84 is shortened to move the grinding wheel head 67 to the solid line position in FIG. The piston rod 85 is fitted into the lock hole 82 by rotating the grindstone head lock cylinder 84 so as to extend. In this state, the vertical cylinder 60 and the horizontal cylinder 65 are driven, and the side surface of the vertical web is ground by the grinding wheel 66. Similarly, the inner surface of the lower flange and the outer surface of the lower flange of the H-section steel 8 are sequentially ground.

The H-section steel provided with straightness by the straightening pinch roller on the carry-in side keeps straightness on the unloading side as well, so no straightening pinch roller is provided on the unloading side. It goes without saying that a pinch roller for stabilizing the straight running may also be provided on the carry-out side symmetrically.

[0037]

According to the first aspect of the present invention, the inner and outer surfaces of the upper flange, both side surfaces of the web and the inner and outer surfaces of the lower flange are successively ground by a pair of left and right grinding wheels while the H-section steel is placed vertically. Since the reversing operation of the H-section steel is unnecessary, the safety of the operation can be ensured, and since the H-section steel is ground vertically, the lateral dimension of the device can be made compact, and it can be easily used even in a small factory. Can be installed. Further, since the grinding head can be positioned with reference to the thickness center line of the vertical web, the positioning of the grinding head is easy even if the type of the H-section steel to be grounded changes, and the grinding head can be moved. The control system for swinging the head can also be simplified.

According to the second aspect of the present invention, since the left and right grinding wheel heads are moved up and down in synchronization with each other, the left and right grinding wheels always grind the H-shaped steel symmetrically at the same height position. Always balance. This stabilizes the posture of the H-shaped steel, which tends to be unstable in the vertical state, and is particularly effective when grinding a short H-shaped steel. Further, since the two grinding units can be moved up and down by a single actuator, the lifting drive system is simplified and the control is simplified.

According to the third aspect of the present invention, since the straight stabilizing pinch roller is provided, a stable straight running posture is ensured even with a short H-shaped steel, and the grinding can be performed correctly.

[Brief description of the drawings]

FIG. 1 is a front view of a surface grinding apparatus for an H-section steel according to the present invention, taken along the line II-I of FIG.

FIG. 2 is a left side view of the surface grinding apparatus for the H-section steel.

FIG. 3 is a plan view of the surface grinding device for the H-section steel.

FIG. 4 is a rear view of the square frame 10 viewed from the direction of arrows in FIG. 2 IV-IV.

FIG. 5 is a front view of the base viewed from the direction of arrows in FIG. 2V-V.

FIG. 6 is a front view of the base viewed from the direction of arrows in FIG. 2 VI-VI.

FIG. 7 is a plan view of the square frame 10;

FIG. 8A is a horizontal sectional plan view of a grinding unit,
(B) is a front view of the grinding unit.

9A and 9B are diagrams showing a grinding pattern of each surface of an H-section steel flange and a web, wherein FIG. 9A is a plan view, FIG. 9B is a horizontal sectional plan view, and FIG. 9C is a side view.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 surface grinding device for H-section steel 2 base 3 first bolster 4 second bolster 5 carry-in roller conveyor 6 carry-out roller conveyor 7 gap 8 section steel 9 prism 10 rectangular frame 10a pillar 10b beam 14 bracket 15 vertical Rotating shaft 16 sprocket 17 sprocket 18 driven gear 19 driven sprocket 22 sprocket 23 triangular arm plate 24 rotary shaft 25 sprocket 26 transport pinch roller 26a pinch roller 27 chain 31 vertical cylinder 32 piston rod 33 L-shaped arm 34 pin 35 fitting hole 36 Notch hole 37 Tie rod 41 Transport motor 42 Gear box 43 Rotating shaft 44 Drive gear 45 Drive sprocket 47 Chain 48 Chain 51 Rail 52 Lifting body 53, 54 Sprocket 55 Chain 56 Same as above Horizontal rotation shaft 59 Bracket plate 60 Vertical cylinder 61 Piston rod 62 Grinding unit 63 Piston rod 64 Main body 65 Horizontal cylinder 66 Grinding wheel 67 Grinding stone head 69 Grinding motor 70 Hollow longitudinal member 71 Drive pulley 72 Follower pulley 73 Fitting part 74 Timing Belt 75 Timing Belt 77 Bevel Gear Unit 78 Bevel Gear 79 Bevel Gear 80 Driven Pulley 81 Drive Pulley 82 Lock Hole 83 Arc Surface 84 Grinding Stone Head Lock Cylinder 85 Piston Rod 86 Mounting Plate 87 Photoelectric Sensor

Claims (3)

[Claims] 1. A conveyor for loading and unloading an H-section steel in a horizontal direction in a vertically placed state, and a pair of elevating guides erected at the side of the conveyor between a loading side and a loading side of the conveyor. A pair of elevating bodies that can move up and down along the elevating guide, a pair of grinding wheels for surface grinding from both side surfaces of the web of the H-section steel to inner and outer surfaces of the flange, and a grindstone that rotatably supports the grinding wheels A head, a oscillating means for rotating the direction of the grinding wheel head in a horizontal direction and a vertical direction, and a grinding motor for rotating the grinding wheel, and in a horizontal direction toward the H-shaped steel with respect to the elevating body. A surface grinding apparatus for an H-beam, comprising: a pair of grinding units slidably disposed. 2. A pair of elevating guides provided with a pair of elevating members at right and left sides of the conveyor between a carry-in side and an unloading side of the conveyor, and a pair of sprockets at upper and lower end positions of the elevating guides. A horizontal shaft is fitted, a chain is extended between the pair of upper and lower sprockets, and the right and left elevating bodies are connected to the left and right chains at respective heights. 2. The surface grinding device for H-section steel according to claim 1, wherein one of the members is moved up and down so that the other member is moved up and down in synchronization with the lifting member. 3. A pair of right and left for rolling and holding the web of the H-shaped steel along the conveyor on both sides of the web of the H-shaped steel on the loading side and the unloading side of the grinding unit in the conveying direction of the conveyor. The transfer pinch roller is arranged,
A surface grinding device for an H-section steel, wherein pinch rollers for stabilizing the straight running for rolling and sandwiching both side surfaces of the web of the H-section steel are provided on the loading side of the transfer pinch roller on the loading side. .