JP2022188464A - support mechanism - Google Patents

Abstract

To provide a support mechanism which can grind an end surface of a flange of a steel material with a simple structure using a grinder.SOLUTION: A support mechanism 1 is used to support a grinder 100 used to grind an end surface of a steel material in a movable manner and includes: a support member 30 having a base part 31 and a pair of wall parts 41, 42 each of which is erected from the base part 31 and formed with a recessed part C extending in a vertical direction; a dolly 10 which supports the support member 30 in a manner that the support member 30 can move relative to the steel material; and a connection member 50 which connects the grinder 100 to the support member 30 through the recessed parts C in a swingable state.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a support mechanism, and more particularly to a grinder support mechanism for supporting a grinder for grinding an end face of a flange of H steel.

Conventionally, a grinding device equipped with a grindstone has been used for dimensional adjustment of horizontally extending steel materials and the like. Grinding work is sometimes performed manually, for example, by manipulating the handle of a grinding device. However, when performing manual work, the work results may be uneven, so various improvements have been attempted. there is

For example, Patent Literature 1 discloses a conveyor for horizontally loading and unloading H-shaped steel in a vertically placed state; Elevating body that can be moved up and down along the lifting guide, a grinding wheel for surface grinding from both sides of the H-shaped steel web to the inner and outer surfaces of the flange, a grinding wheel head that supports the grinding wheel in a rotatable manner, and a horizontal grinding wheel head. A grinding unit having swinging means for rotating in the direction and the vertical direction, and a motor for rotating the grinding wheel, is provided so as to be able to slide in the horizontal direction toward the H-shaped steel with respect to the elevating body. A face grinding device for H-section steel is disclosed. With a pair of left and right grinding wheels, the inner and outer surfaces of the upper flange, both sides of the web, and the inner and outer surfaces of the lower flange are automatically ground one after another while the H-shaped steel is placed vertically, eliminating the need for reversing the H-shaped steel. Therefore, the safety of the work can be ensured, and since the H-shaped steel is ground vertically, the horizontal dimension of the device can be made compact, and it can be easily installed in a small factory.

Further, Patent Document 2 discloses a vehicle body that can move along a rail, an abrasive material that grinds the side surface of the head of the rail, and a rotation drive source that rotates the abrasive material, and the abrasive material is the head of the rail. A rail polishing apparatus is disclosed in which a polishing surface for polishing the side surface of a part is supported swingably with respect to a rotating shaft of an abrasive. According to this rail polishing apparatus, the polishing surface of the polishing material can be brought into contact following the curvature and deformation of the side surface of the head of the rail, and good polishing can be performed.

Furthermore, Patent Document 3 discloses a running body that is movable in the longitudinal direction along the crest side of an angle steel material, and a main body that is coupled to the running body and grinds the first and second crest sides. The body is provided with magnet wheels that are attracted to the first and second crest sides, respectively, and is configured to be freely movable in the longitudinal direction along the crest sides of the angle steel material by rolling the magnet wheels. A support frame coupled to a traveling body, at least a pair of rotary polishing brushes supported by the support frame so as to be in contact with the first and second mountain side surfaces, a drive device supported by the support frame, and the drive device A polishing apparatus is disclosed which includes a transmission mechanism supported on a support frame for transmitting rotation of the rotating polishing brush. According to this polishing device, the magnet wheels are attracted to the two crest side surfaces of the angle steel material, and the brushes are moved in the longitudinal direction of the angle steel material while being pressed against the two crest side surfaces, so that the two crest side surfaces are simultaneously and efficiently polished. Can be polished.

JP-A-2002-254279 JP 2018-204225 A JP 2020-138242 A

By the way, the H-section steel surface grinding apparatus described in Patent Document 1 has a complicated structure because it requires a control system such as a motor for positioning the grinding wheel head. Further, the main purpose of the polishing apparatus described in Patent Document 2 is to polish the side surface of the rail head with an abrasive. Furthermore, the main purpose of the polishing apparatus described in Patent Document 3 is to polish the crest side of the angle steel material.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a support mechanism capable of grinding the end face of a steel flange with a simple configuration using a grinding device such as a grinder.

The present invention relates to a support mechanism for movably supporting a grinder used for grinding an end face of a steel material, comprising a base and a pair of concave portions rising from the base and extending in the vertical direction. a support member having a wall portion of; a cart that supports the support member movably with respect to the steel material; and a connection that connects the grinder to the support member through the recess in a swingable state. and a member.

In the support mechanism according to the present invention, the connecting member has an extension portion extending in the movement direction of the grinder, and the extension portion has a pair of support shafts projecting in a direction substantially orthogonal to the movement direction of the grinder. may be provided, and one of the pair of support shafts may be inserted into the recess.

In the support mechanism according to the present invention, the support member may be provided with a spacer capable of changing the height of the pair of support shafts.

In the support mechanism according to the present invention, the carriage may be provided with a first roller that is in contact with the end face of the steel material and that rotates around a rotation axis that extends in a horizontal direction orthogonal to the moving direction of the grinder. .

In the support mechanism according to the present invention, a second roller may be arranged that is in contact with the side surface of the steel material and rotates around a rotation shaft that extends in the vertical direction.

As described above, according to the present invention, it is possible to provide a support mechanism capable of grinding the end face of a steel flange with a simple configuration using a grinding device such as a grinder.

1 is a schematic perspective view of a support mechanism according to an embodiment of the invention; FIG. Fig. 2(a) is a schematic front view of a truck according to an embodiment, Fig. 2(b) is a schematic side view of a truck according to an embodiment, and Fig. 2(c) is a schematic side view of a truck according to an embodiment; 2 is a schematic rear view of a carriage according to FIG. FIG. 3(a) is a schematic front view of the support member according to the embodiment, and FIG. 3(b) is a schematic side view of the support member according to the embodiment. FIG. 4(a) is a diagram showing the positional relationship between the support member, the projection and the carriage when the support member is tilted, and FIG. 4(b) is a partially enlarged view of FIG. 4(a). FIG. 4 is a schematic perspective view of a connecting member according to the embodiment of the invention; It is a side view which shows the state where the grinder was attached to the support mechanism which concerns on embodiment of this invention. FIG. 7(a) is a diagram showing a state in which the support mechanism is attached to the H steel, and FIG. 7(b) is a partially enlarged view of FIG. 7(a). FIG. 8(a) is a diagram showing the rough cutting process, FIG. 8(b) is a diagram showing the adjustment process, and FIG. 8(c) is a diagram showing the finishing process.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings. It should be noted that the present embodiment described below does not unduly limit the content of the present invention described in the claims, and all of the configurations described in the present embodiment are essential as means for solving the present invention. not necessarily.

FIG. 1 is a schematic perspective view of a support mechanism 1 according to an embodiment of the invention. The support mechanism 1 is used, for example, to grind the end face of a flange made of steel (H steel) with a grinder attached. In the following embodiments, the X-axis direction is the front-rear direction, the Y-axis direction is the left-right direction, and the Z-axis direction is the vertical direction (vertical direction).

As shown in FIG. 1 , the support mechanism 1 includes a carriage 10 , a support member 30 attached to the carriage, and a connecting member 50 attached to the support member 30 .

2(a) is a front view of the truck 10, FIG. 2(b) is a side view of the truck 10, and FIG. 2(c) is a rear view of the truck 10. FIG. The cart 10 includes a base 11, a plurality of first rollers 21F and 21R attached to the base 11, and a plurality of second rollers 22A, 22B, 22C, 22D, 22E, 22F, 22G, and 22H. It is The carriage 10 movably supports the support member 30 with respect to the H steel. In the following description, when the rollers are not distinguished, they are simply referred to as the first roller 21 or the second roller 22 for simplification of description.

The base 11 is composed of a first base material 11a and a second base material 11b, and the first base material 11a and the second base material 11b are arranged side by side in the left-right direction and joined by, for example, bolts 23a and nuts 23b. In this embodiment, for convenience of explanation, the member located on the right side is the first base material 11a, and the member located on the left side is the second base material 11b. The first base material 11a and the second base material 11b may have the same shape or may have different shapes. The gap between the first base material 11a and the second base material 11b can be adjusted by the bolt 23a and the nut 23b.

A pair of first rollers 21F and 21R are provided in front and rear on the upper side of the first base material 11a. The first rollers 21F and 21R are in contact with the end face of the steel material and are configured to rotate around a rotation axis extending in the left-right direction (horizontal direction orthogonal to the moving direction of the grinder). A pair of second rollers 22A and 22B are provided vertically aligned at the leading end of the lower side of the first base material 11a, and a pair of second rollers 22A and 22B are provided vertically aligned at the rear end of the lower side. 22C and 22D are provided. Each of the second rollers 22A, 22B, 22C, and 22D is configured to contact the side surface of the steel material and rotate around a rotation shaft extending in the vertical direction.

A pair of second rollers 22E and 22F are provided vertically aligned at the tip of the lower side of the second base material 11b, and a pair of second rollers aligned vertically are provided at the rear end of the lower side. 22G and 22H are provided. Each of the second rollers 22E, 22F, 22G, and 22H is configured to rotate around a rotation shaft extending in the vertical direction.

In the carriage 10, the distance between the pair of second rollers 22A, 22B and the pair of second rollers 22E, 22F is configured to substantially match the width of the flange. Similarly, the distance between the pair of second rollers 22C, 22D and the pair of second rollers 22G, 22H is configured to substantially match the width of the flange. By adjusting the gap between the first base material 11a and the second base material 11b using the bolt 23a and the nut 23b, the separation distance between the second rollers 22 in the left-right direction can be adjusted according to the width of the flange. can.

Here, an example in which two second rollers 22 are arranged on the first base material 11a and the second base material 11b, respectively, is described. The number of the second rollers 22 on the front and rear sides may be one each, or may be three or more. Also, the number of the second rollers 22 arranged in the front may be different from the number of the second rollers 22 arranged in the rear. By providing the carriage 10 with the first rollers 21 and the second rollers 22, the support mechanism 1 can be moved smoothly with respect to the H steel. Further, if the truck 10 can move smoothly with respect to the H-steel flange, the truck 10 may be provided with only the first rollers 21 and not necessarily with the second rollers 22 . Alternatively, if the end surface of the steel material is wide enough to place the entire carriage 10, wheel-shaped rollers are provided on the carriage 10, and the entire carriage 10 is placed on the end surface and moved by the wheels of the carriage 10. It is good also as a structure which carries out.

3(a) is a front view of the support member 30, and FIG. 3(b) is a side view of the support member 30. FIG. The support member 30 is formed in a substantially U-shape with an open top, and is composed of a base portion 31 formed in a flat plate shape, and a first wall portion 41 and a second wall portion 42 rising from the base portion 31 . . The base portion 31 is formed, for example, in a substantially rectangular shape in plan view, and is attached to the carriage 10 .

The first wall portion 41 and the second wall portion 42 are both formed in a flat plate shape and arranged in a state of facing each other. That is, as shown in FIG. 3, the first wall portion 41 and the second wall portion 42 are formed symmetrically, and are spaced apart from each other by a distance sufficient for a grinder to be arranged. The base portion 31, the first wall portion 41 and the second wall portion 42 form a space in which the grinder is arranged.

The first wall portion 41 and the second wall portion 42 are formed with a recessed portion C extending in the vertical direction at the central portion in the front-rear direction. The recess C is opened upward, and has substantially the same width from the opening side to the bottom portion BP. The depth of the recess C should be set so that the grinding angle P, which will be described later, is appropriate. The recess C formed in the first wall portion 41 and the recess C formed in the second wall portion 42 are formed in the same shape.

A plurality of notches N are formed on the front side of the first wall portion 41 and the second wall portion 42 . Each notch N opens forward. Although the shape of the notch N is not particularly limited, it is desirable that the notch N is formed obliquely so as to incline downward toward the rear side. A notch N is also formed in the second wall portion 42 corresponding to the location of the notch N formed in the first wall portion 41 . The number of notches N formed in the first wall portion 41 and the second wall portion 42 is not particularly limited.

A pair of spacers 43 may be provided on the base portion 31 of the support member 30 . The spacer 43 may have any structure as long as it is formed so as to be able to expand and contract in the vertical direction, and may be configured by an elastic member such as a spring. The spacer 43 may be arranged at a position overlapping the concave portion C in the left-right direction, and the upper end portion 43a of the spacer 43 may be any height from the bottom portion BP to the upper end of the first wall portion 41 or the second wall portion 42. It is desirable to be configured so that it can also be changed to Note that the spacer 43 may be provided at an appropriate location of the support member 30 including the inside of the recess C.

FIG. 4(a) is a diagram showing the positional relationship among the support member 30, the convex portion 12 and the carriage 10 when the support member 30 is tilted, and FIG. 4(b) is a partially enlarged view of FIG. 4(a). is. The carriage 10 and the support member 30 may be connected via the convex portion 12 . Specifically, a convex portion 12 is provided on the first base material 11 a of the carriage 10 , and the support member 30 is arranged on the convex portion 12 . Since the convex portion 12 is formed in a semi-ring shape that protrudes upward, the convex portion 12 and the support member 30 can swing in the lateral direction with respect to the carriage 10 . The shape of the convex portion 12 is not limited to a semi-ring shape, and may be any shape such as a hemispherical shape, a polygonal shape, etc., as long as it can support the support member 30 so that it can swing in the left-right direction. good too. Also, the convex portion 12 may be provided on the support member 30 side.

FIG. 5 is a schematic perspective view of the connecting member 50. FIG. As shown in FIG. 5, the connecting member 50 includes a pair of extending portions 51, 51 extending in the front-rear direction, and a horizontal portion 54 connecting the pair of extending portions 51, 51 together. The extending portion 51 has a mounting portion 52 and a linear portion 53 extending linearly from the front to the rear. The connecting member 50 is used to connect the grinder to the support member 30 and is preferably made of metal, for example, so that it can withstand the weight of the grinder.

A mounting hole 52a is formed in the mounting portion 52, and a handle operated by an operator to operate the grinder is mounted in the mounting hole 52a. Although the attachment of the handle to the attachment hole 52a is not particularly limited, it may be coupled using screws or bolts, for example.

The linear portion 53 is a pair of left and right linear members that are positioned on the rear side of the mounting portion 52 and extend in the front-rear direction. A pair of left and right first support shafts 61, a pair of second support shafts 62, and a pair of third support shafts 63 are provided in this order from the mounting portion 52 side to the horizontal portion 54 side. The first support shaft 61, the second support shaft 62, and the third support shaft 63 all protrude outward from the linear portion 53 in the left-right direction. The first support shaft 61, the second support shaft 62, and the third support shaft 63 may be integrally formed with the connecting member 50, or may be configured as separate members. In addition, when the support shafts are not distinguished in the following description, they are simply referred to as support shafts 60 for simplification of description.

6 is a side view of the grinder 100 attached to the support mechanism 1. FIG. As will be described later, grinder 100 is attached to support member 30 via connecting member 50 for grinding H steel. Since the support member 30 is fixed to the carriage 10 , the grinder 100 also moves as the carriage 10 moves.

The grinder 100 has a longitudinal main body portion 101 and a grinding portion 102 provided on the front side of the main body portion 101 . The polishing unit 102 is, for example, a disk-shaped whetstone. A cord 103 connected to a battery (not shown) is provided on the rear side of the body portion 101 . A handle 104 is provided on the front side of the main body 101 through a mounting hole 52a.

The grinder 100 is attached to the support member 30 by inserting one of the first support shaft 61, the second support shaft 62, and the third support shaft 63 into the recess C. As shown in FIG. FIG. 6 shows a state in which the second support shaft 62 is inserted into the recess C and arranged on the bottom portion BP. By inserting the support shaft 60 into the recess C, movement of the grinder 100 relative to the support mechanism 1 is restricted in a horizontal state. When grinding the end face of the H-steel, the grinder 100 is moved back and forth by the operator while being attached and fixed to the support member 30 .

One of the first support shaft 61, the second support shaft 62, and the third support shaft 63 is inserted into the recess C. As shown in FIG. Three types of angles of the grinder 100 with respect to the H steel are determined in advance, and one of the first support shaft 61, the second support shaft 62, and the third support shaft 63 is inserted into the recess C according to the required angle. be done.

The first support shaft 61, the second support shaft 62, and the third support shaft 63 are all detachable from the concave portion C. As shown in FIG. Since the support shaft 60 is detachable from the concave portion C, the grinder 100 integrated with the connecting member 50 can be easily detached from the support member 30 . That is, the state of the grinder 100 can be changed from a state in which the second support shaft 62 is inserted into the recess C to a state in which the first support shaft 61 or the third support shaft 63 is inserted into the recess C. This makes it possible to easily change the angle of the grinder 100 with respect to the H steel.

The height of the grinder 100 can be changed by changing the height of the support shaft 60 inserted into the recess C by using the spacer 43 . That is, the angle of the grinder 100 with respect to the H steel can be changed without attaching and detaching the support shaft 60 to and from the concave portion C. Further, by tilting the support member 30 with respect to the carriage 10, the grinder 100 can be tilted in either the left or right direction. As a result, burrs generated during grinding can be removed.

In consideration of work safety, the grinder 100 may be fixed to the connecting member 50 by a holder 105 . Also, when the grinder 100 is not in operation, it is desirable to lift the front side of the grinder 100 so that the grinding portion 102 does not contact and damage the H steel. For this purpose, for example, as shown in FIG. 6, the pipe member 106 may be hung horizontally between any pair of notches N to support the weight of the grinder 100 .

FIG. 7(a) is a view of the state in which the support mechanism 1 is attached to the H steel 200 as viewed from the front-rear direction. FIG. 7(b) is an enlarged view of the area surrounded by the dashed line in FIG. 7(a).

As shown in FIG. 7( a ), the H steel 200 includes a flat plate-like first flange 201 and a second flange 202 provided facing each other, and a web 203 connecting the first flange 201 and the second flange 202 . and An upper surface of the first flange 201 is an upper surface 201F, and an upper surface of the second flange 202 is an upper surface 202F. Both sides of the first flange 201 are side surfaces 201S, and both side surfaces of the second flange 202 are side surfaces 202S.

The support mechanism 1 is used with the carriage 10 placed on the top surface 201F of the first flange 201 or the top surface 202F of the second flange 202 . The support mechanism 1 is used to adjust at least one of the first flange 201 and the second flange 202 to an appropriate height by grinding the grinder 100 .

As shown in FIG. 7B, when the support mechanism 1 is attached to the first flange 201, the first roller 21 is in contact with the upper surface 201F. In addition, the second rollers 22A, 22B, 22E, and 22F are in contact with the side surface 202S with the second flange 202 sandwiched therebetween. When the grinder 100 is moved back and forth with respect to the H steel 200, the first roller 21 rotates in contact with the upper surface 201F, and the second roller 22 rotates in contact with the side surface 202S.

FIG. 8 is a diagram showing an arrangement state of the grinder 100 that changes according to the purpose of use. In the process of grinding the H steel 200, it is common to go through so-called rough cutting, adjustment, and finishing processes. Moreover, each of these steps is performed by changing the angle of the grinder 100 with respect to the H steel 200 . That is, it is performed by changing the grinding angle P between the polishing portion 102 and the upper surface 201F (or the upper surface 202F).

FIG. 8(a) is a diagram showing the rough cutting process. In the rough cutting process, the grinding angle P1 between the polishing portion 102 and the upper surface 201F is set to be the largest compared to the adjusting and finishing processes. This is because the grinder 100 must grind the end face (upper surface 201F or upper surface 202F) of the H steel 200 to a large extent. The first support shaft 61 is inserted into the recess C to obtain the grinding angle P1. When the operator moves the grinder 100 back and forth in this state, the upper surface 201F is deeply ground by the grinding unit 102 . It is desirable that the grinding angle P1 be in the range of 22 degrees to 25 degrees.

FIG.8(b) is a figure which shows an adjustment process. In the adjustment process, the grinding angle P2 between the polishing portion 102 and the upper surface 201F is set smaller than the grinding angle P1 in the roughing process and larger than the grinding angle P3 in the finishing process. The second support shaft 62 is inserted into the recess C to obtain the grinding angle P2. When the operator moves the grinder 100 back and forth in this state, the upper surface 201F is shallowly ground by the grinding unit 102 . It is desirable that the grinding angle P2 be in the range of 18 degrees to 21 degrees.

FIG.8(c) is a figure which shows a finishing process. In the finishing process, the grinding angle P3 between the polishing portion 102 and the upper surface 201F is set to be the smallest compared to the rough cutting and adjusting processes. This is because the grinder 100 only needs to slightly grind the end surface (upper surface 201F or upper surface 202F) of the H steel 200 . The third support shaft 63 is inserted into the recess C to obtain the grinding angle P3. When the operator moves the grinder 100 back and forth in this state, the upper surface 201F is slightly ground by the grinding section 102 . It is desirable that the grinding angle P1 be in the range of 15 degrees to 17 degrees.

As described above, the support member 30 has a base portion 31 and a pair of wall portions 41 and 42 formed with recesses C that stand up from the base portion 31 and extend in the vertical direction. A grinder 100 is attached to a support mechanism 1 that includes a carriage 10 that movably supports a steel 200 and a connecting member 50 that connects the grinder 100 to a support member 30 via a recess C in a swingable state. At least one of the first flange 201 and the second flange 202 of the H steel 200 is ground. As a result, the top surface 201F or the top surface 202F is ground, so the height of the first flange 201 or the second flange 202 is reduced. Therefore, the end face of the flange of the H steel 200 can be ground with a simple configuration using a grinding device such as the grinder 100, and even if the H steel 200 has a dimensional deviation, the dimensional deviation is within the range of the industrial standard value. can be accommodated inside.

Although one embodiment and examples of the present invention have been described in detail above, those skilled in the art will understand that many modifications are possible without substantially departing from the novel matters and effects of the present invention. would be easy to understand. Therefore, all such modifications are intended to be included in the scope of the present invention.

For example, a term described at least once in the specification or drawings together with a different, broader or synonymous term can be replaced with the different term anywhere in the specification or drawings. Also, the configuration of the support mechanism is not limited to the one described in the embodiment and examples of the present invention, and various modifications are possible.

1 support mechanism 10 carriage 11 base 21 first roller 22 second roller 30 support member 31 base portion 41 first wall portion 42 second wall portion 50 connecting member 51 extending portion, 52 mounting portion 53 straight portion 54 horizontal portion 61 first support shaft 62 second support shaft 63 third support shaft 100 grinder 200 H steel 201F upper surface C concave portion

Claims (5)

A support mechanism for movably supporting a grinder used for grinding an end face of a steel material,
a support member having a base portion and a pair of wall portions formed with recesses extending vertically and rising from the base portion;
a carriage that movably supports the support member with respect to the steel material;
A support mechanism comprising a connecting member that connects the grinder to the support member through the recess so as to be swingable. The connecting member has an extension portion extending in the moving direction of the grinder,
A plurality of sets of a pair of support shafts projecting in a direction substantially orthogonal to the moving direction of the grinder are provided in the extension part,
2. The support mechanism according to claim 1, wherein one of said pair of support shafts is inserted into said recess. 3. The support mechanism according to claim 2, wherein the support member is provided with a spacer capable of changing the height of the pair of support shafts. The carriage includes:
4. The first roller, which is in contact with the end surface of the steel material and rotates around a rotation axis extending in a horizontal direction perpendicular to the moving direction of the grinder, is arranged. support mechanism. The carriage includes:
5. The support mechanism according to claim 4, further comprising a second roller that is in contact with the side surface of the steel material and that rotates around a rotation shaft that extends in the vertical direction.

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