JP2019077523A - Auxiliary apparatus for roller replacement - Google Patents

Abstract

To provide an auxiliary apparatus for roller replacement capable of easily replacing a lower support roller out of support rollers of a belt conveyor.SOLUTION: An auxiliary apparatus for roller replacement allows a jack device 10 to be supported in a manner hung from support frames 3 and 3 through a hanger 12. Thus, a lower support roller 2 can be raised by extending the jack device 10 even if legs of the support frames 3 and 3 are supported on an installation surface of a belt conveyor, other equipment is arranged or dust of a conveyed object is deposited on the installation surface.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a roller replacement assisting device for assisting replacement of rollers attached to a belt conveyor.

  For example, in a cement manufacturing facility, a belt conveyor is used to transport an object such as a clinker toward the next processing step. The belt conveyor is disposed along the longitudinal direction of the belt on both sides of the belt, and a supporting roller which supports the conveyed object and endlessly rotates the belt, a supporting roller which supports the belt at a midway in the longitudinal direction to prevent unnecessary hanging down of the belt. And a support frame for supporting the support roller at the lower position of the belt.

  The support roller wears over time as it rotates with endless rotation of the belt under the weight of the belt and the weight of the transported object, and the belt is damaged due to this, or, depending on the transported object, dust etc. Enters the bearing of the support roller, which inhibits rotation of the support roller. Under these circumstances, the support roller is replaced as needed.

  Therefore, a roller replacement assisting device for replacing a support roller in a belt conveyor is proposed in Patent Document 1 below. The roller exchange assisting device described in Patent Document 1 includes a hook-like member which is delivered to support frames on both sides, and a jack attached to the hook-like member. The jack comprises an abutment that can abut the lower surface of the belt.

  In order to replace the support roller using this roller replacement auxiliary device, the operator passes the wedge-like member to the support frames on both sides in the vicinity of the support roller to be replaced and fixes the wedge-like member to the frame. The caged member is in a stable state. Next, the worker stretches the jack in the vertical direction to bring the contact member into contact with the lower surface of the belt, and further lifts the belt by stretching the jack. By doing so, since the belt is separated from the support roller, the worker can easily replace the support roller.

Japanese Utility Model Publication No. 53-49194

  By the way, the belt of the belt conveyor endlessly rotates the upper-side forward path for transporting the transported object toward the next processing step and the lower return path for returning the transported object so as to be loaded thereon. For example, in a belt conveyor provided with a belt having a long transport path, an upper support roller that supports the belt below the belt in the forward pass and a lower support that supports the belt below the belt in the return pass as support rollers. It may be equipped with a roller.

  In the roller exchange assisting device described in Patent Document 1, after the hook-like member is passed and fixed to the support frames on both sides, the jack is extended in the vertical direction and the belt is lifted, whereby the upper support roller of the support rollers is raised. The belts in the forward pass can be spaced apart to facilitate replacement of the upper support roller.

  On the other hand, in order to use the roller exchange assisting device described in Patent Document 1 for replacing the lower support roller, instead of passing the hook-like member over the support frames on both sides, it is mounted on the installation surface on which the frame is installed. It is conceivable to place it. In this case, it is necessary to take measures to stabilize the wedge-shaped member. However, since the legs of the support frame are supported or other equipment is disposed on the installation surface, it is difficult to install. Moreover, dust may be accumulated on the installation surface, and in such a case, the roller replacement assisting device can not be installed.

  Then, an object of the present invention is to provide a roller exchange assisting device capable of easily replacing the lower support roller among the support rollers in the belt conveyor.

  The roller replacing auxiliary device according to the present invention includes a belt endlessly rotating to circulate in an upper forward path and a lower return path, and an upper portion disposed under the forward path and supporting the hanging of the belt at a midway portion in the longitudinal direction A support roller, a lower support roller for supporting the drooping of the belt disposed on the lower side of the return path at a midway portion in the longitudinal direction, both sides in the width direction of the belt along the longitudinal direction of the belt, the forward path and the return path A support conveyor member arranged between the return path and below the return path of the belt conveyor provided with a support frame for supporting the upper support roller and the lower support roller, and the support frame A mounting portion to be mounted, and a supporting portion for supporting an end side of the supporting wedge member at a lower position of the supporting frame; A lifting jig to droop to be supported by the arm, provided with a lifting part which abuts with the width direction on the lower surface of the return path, is characterized in that a jack which is supported by the support guidance rod.

  In the roller replacement assisting apparatus of the present invention having the above configuration, the worker attaches the mounting portion of the hanger to each support frame, thereby suspending the hanger on the support frame, and one end side of the support wedge member When the jack supported by the supporting rod member is extended by supporting the supporting portion of one of the supporting members with the supporting portion of the supporting rod and supporting the other end of the supporting rod with the supporting portion of the other lifting member If the jack abuts on the lower surface of the return path and the jack is extended, the lower support roller can be easily replaced because the return path is separated from the lower support roller by the upper portion.

  In the roller exchange assisting device of the present invention, the support portion of the hanger can adopt a configuration in which the support wedge member is inserted in the width direction of the return path.

  In the roller replacement auxiliary device of the above configuration, the support wedge member is supported by the suspension tool in a state along the width direction of the return path by inserting the support rod member in the width direction of the return path into the support portion of the hanger. From the above, it is possible to lift the return path by bringing the upper part of the jack along the width direction of the return path.

  In the roller exchange assisting device of the present invention, the support wedge member is formed into a bowl shape having a rectangular cross section, and the support portion of the hanger is a first bottom wall support portion on which the bottom wall surface of the support wedge member is placed; The structure provided with the 1st side wall surface opposing part which opposes the both outer surface of a support collar member is employable.

  In the roller exchange assisting device configured as described above, the support wedge member is stably supported by placing the bottom wall surface of the support wedge member on the first bottom wall support portion of the support portion, and the support portion is on the outer surface of the support wedge member. By providing the opposing first side wall surface facing portion, the outer surface of the support wedge member faces the first side wall surface facing portion even if the force in the direction to tilt the jack acts when extending the jack and lifting the return path. Because it is supported in contact with the seat, it can be stabilized without overturning the jack.

  The roller replacement assisting device according to the present invention is mounted on each of the support frames, and mounts the end side of the support wedge member so that the support wedge member is along the width direction of the belt between the forward path and the return path. The structure provided with the mounting tool made to be able to be employ | adopted is employable.

  In the roller replacement auxiliary device of the above configuration, the worker mounts the mounting tool on each support frame, places one end side of the supporting wedge member on one mounting tool, and the other end side of the supporting wedge member When placed on one of the placement tools and the support wedge member is supported by the support frame via the placement tool and the jack supported by the support wedge member is extended, the upper portion of the belt is the lower surface of the forward path of the belt. When the jack abuts on and the jack is extended, the upper support roller lifts the outgoing path away from the upper support roller, making it easy to replace the upper support roller.

  In the roller exchange assisting device of the present invention, the mounting tool can adopt a configuration in which the support wedge member is inserted in the width direction of the forward path.

  In the roller replacement auxiliary device of the above configuration, the support wedge member is placed on the placement tool so as to be inserted in the width direction of the forward route, and the support wedge member is placed on the placement tool in a state along the width direction of the forward route. Since the jack is placed, the forward path can be lifted along the width direction of the forward path.

  In the roller exchange assisting device of the present invention, the support wedge member is formed into a bowl shape having a rectangular cross section, and the mounting tool is a second bottom wall support portion on which the bottom wall surface of the support wedge member is placed; The structure provided with the 2nd side wall surface opposing part which opposes both the outer side surface of can be employ | adopted.

  In the roller exchange assisting device configured as described above, the support wedge member is stably supported by placing the bottom wall surface of the support wedge member on the second bottom wall support portion of the mounting tool, and the support portion is the outer surface of the support wedge member. Is provided with the second side wall surface opposing portion facing the second side wall surface, even if the force in the direction to tilt the jack acts when extending the jack and lifting the forward path, the outer side surface of the support wedge member faces the second side wall surface Because it is supported in contact with the part, it can be stabilized without overturning the jack.

  In the roller replacement assisting device of the present invention, the lifting portion of the jack may include lifting pieces on both sides in the width direction, and the lifting pieces may be rotatable in a vertical plane by a ratchet mechanism.

  In the roller replacement auxiliary device having the above configuration, the lifting piece on the upper portion is made to conform to the cross-sectional shape of the belt via the ratchet mechanism with respect to the belt having a cross-sectional shape in which both sides in the width direction incline upward to the width direction The belt can be lifted while suppressing the load on the

  In the roller exchange assisting device of the present invention, the rotary manipulation tool for rotating the screw member for jack expansion and contraction provided in the jack is provided, and the rotary manipulation tool has a cylindrical grip portion and the grip portion loosely fitted. It is possible to adopt a configuration provided with an operated part to be inserted and having a hook at the tip end to be engaged with the operated piece of the screw member and to which a rotation drive part of the electric rotating tool is attached at the base end.

  In the roller replacement auxiliary device of the above configuration, the operator locks the hook of the rotary operation tool to the operated piece of the screw member, holds the grip portion, and rotates the rotary drive portion of the electric rotary tool. When the screw member is rotated and the jack is expanded and contracted by driving the rotating tool by being attached to the operated portion, the forward path or return path of the belt can be easily lifted with respect to the upper support roller or the lower support roller.

  According to the roller replacement assisting device of the present invention, among the support rollers in the belt conveyor, the lower support roller can be easily replaced.

It is a front view before mounting a jack device of a roller exchange auxiliary device concerning one embodiment of the present invention on a mounting tool. It is a front view of the state which mounted the jack apparatus on the mounting tool. It is a perspective view of the state which hung the suspension tool on the support frame. It is a perspective view of the state which hung the mounting tool on the support frame. It is a front view in the state where the rotation operation tool was attached to the screw member of the jack device, and the electric rotation tool was attached to the rotation operation tool. It is a front view of the state which raised the going route by driving the motor-driven rotation tool and extending a jack. It is a front view before making the jack apparatus of the roller replacement | exchange assistance apparatus hang on a hanger. It is a front view of a state where the same jack device was hung on a hanger. It is a front view of the state which raised the return path by driving the motor-driven rotation tool and extending a jack.

  Hereinafter, a roller replacement assisting apparatus according to an embodiment of the present invention will be described with reference to the drawings. The belt conveyor to which the roller replacement assisting device according to the present embodiment is applied has a general configuration. That is, as shown in FIG. 1, the belt conveyor is endlessly rotated so as to circulate through the upper outward path B1 and the lower return path B2, and is disposed under the outward path B1 to make the drooping of the belt B longitudinal direction The upper support roller 1 which supports in the middle part, the lower support roller 2 which supports the hanging down of the belt B arranged on the lower side of the return path B2 in the middle part in its longitudinal direction, and the both sides in the width direction of the belt B A support frame 3, 3 supporting the upper support roller 1 and the lower support roller 2 along the direction is provided.

  The belt B is provided with flexibility. The forward path B1 is an area for transporting the transferred object 4 toward the next processing step unit. The return path B2 is an area to be returned so that the transferred object 4 can be sequentially placed. The belt B is formed so as to incline the both sides in the width direction upward, whereby the transported object 4 on the forward path B1 is unlikely to fall outward in the width direction.

  The upper support roller 1 is provided with a horizontal roller 5 disposed at the center in the width direction, and two inclined rollers 6, 6 disposed on both sides of the horizontal roller 5 and along the inclination in the width direction of the belt B (forward path B1) Equipped with The forward path B1 is prevented by the horizontal rollers 5 and the inclined rollers 6 and 6 from unnecessary drooping. On the other hand, the belt B is reversed with respect to the forward path B1 in the return path B2, and an unnecessary sag is prevented by the lower support roller 2 disposed in the horizontal direction. Since the belt B is given flexibility, the return path B2 has a gentle inclination in the width direction as compared to the forward path B1, and is close to a horizontal cross-sectional shape.

  The support frames 3 and 3 are on both sides in the width direction of the belt B, and are disposed between the forward path B1 and the return path B2. The support frames 3 and 3 are formed in a long cylindrical shape with a rectangular cross section, or in a U-shape with the lower side opened. In any case, the upper wall surface frame 7 formed flat and the flat side wall surface frame 8 integrally formed so as to hang down on both sides in the width direction of the upper wall surface frame 7 are provided.

  The roller replacement assisting device suspends the jack device 10 for lifting the belt B, the rotary operation tool 11 (see FIG. 2) for extending and retracting the jack device 10, and the support device 3 and 3 And a mounting tool 13 (see FIG. 4) for placing the jack device 10 on the support frames 3 and 3. As shown in FIG.

  As shown in FIGS. 1 and 2, the jack device 10 includes a support rod 14 and a jack 15. The support wedge member 14 is formed in a hook shape longer than the separation width of the support frames 3 and 3. Specifically, as shown in FIG. 3, the support wedge member 14 has a bottom wall surface 16, a top wall surface 17, and a pair of side wall surfaces 18 and is formed in a tubular shape having a substantially square cross section.

  As shown in FIG. 1, the jack 15 is provided with a pantograph mechanism in which four link members 20, 21, 22, and 23 are connected to each other, and the connection angles of the link members 20, 21, 22, and 23 are changed. It is configured to move up and down. The link members 20 and 21 disposed on the leg side (the support wedge member 14 side) are rotatably mounted at the longitudinal center position of the support wedge member 14 in the jack 15.

  The jack 15 is a means for changing the connection angle of the link members 20, 21, 22, and 23, the rotation center portion of the pair of link members 20, 22 on one side in the width direction and the pair of the other side in the width direction. A screw member 24 is provided which passes through the center of rotation of the link members 21 and 23. An annular operated piece 26 to which the hook 25 of the rotary operation tool 11 is engaged is integrally formed on one side of the screw member 24.

  The jack device 10 includes an upper support 27 that contacts the lower surface of the belt B in the width direction on the link members 22 and 23 disposed on the support side (belt B side). The support portion 27 is fixed to the link members 22 and 23 disposed on the support side in parallel with the support rod member 14 with the support piece 28, and both sides in the width direction of the support piece 28 via the ratchet mechanism 29. A pair of pivotably mounted lifting pieces 30, 30 are provided. The respective lifting pieces 30, 30 can be inclined upward outward in the width direction with respect to the longitudinal (width direction) end of the support piece 28 by the ratchet mechanism 29. The upper surfaces of the support piece 28 and the support pieces 30 and 30 are formed in a rectangular planar shape so as to suppress damage to the belt B when the support piece 28 abuts on the lower surface of the belt B.

  As shown in FIG. 2, the rotary operation tool 11 has a cylindrical gripping portion 31 gripped by the operator and a wedge-shaped portion (the gripping portion 31 is inserted through a gap) inserted so as to loosely fit the gripping portion 31. The main unit 32 of The hook 25 engaged with the operated piece 26 of the screw member 24 is formed at the distal end of the main body 32, and the rotary drive of the electric rotating tool (for example, electric impact wrench) M shown in FIG. It has the operated part 33 (see FIG. 2) to which the part is attached. Both ends of the grip portion 31 are fixed in such a manner that the collar-like member 34 (for example, a washer) is fixed so as to expand in diameter, and the grip state of the operator's hand is easily stabilized. As the operated portion 33, a hexagonal nut fixed to the main body portion 32 is used.

  As shown in FIG. 3, the hanger 12 is a member that is suspended so as to be supported by the support frames 3 and 3. The hanger 12 includes a first attachment portion 35 attached to the support frame 3 and a first support portion 36 supporting the end side of the support wedge member 14 at a lower position of the support frame 3.

  The first mounting portion 35 is mounted on the upper wall 37 of the support frame 3 so as to overlap the upper surface of the upper wall frame 7, and a pair of suspenders that are overlapped from the side wall surface frame 8 of the support frame 3. The side walls 38 and 38 are integrally formed in a U-shape with the lower side opened. In other words, the hanging upper wall 37 and the hanging side walls 38, 38 are formed in a flat plate shape, and the hanging side walls 38, 38 are arranged in a direction orthogonal to the surface direction of the hanging upper wall 37. ing.

  The first support portion 36 is formed in a frame shape that is integrally suspended from one of the side walls 38 for suspension and along the surface direction of one side wall 38 for suspension. The one side wall 38 for suspension is a use side wall 38 located outside in the width direction when the hanger 12 is in use, that is, when the hanger 12 is made to hang on the support frame 3.

  Specifically, the first support portion 36 is a first bottom wall surface supporting portion 40 on which the bottom wall surface 16 of the support rod member 14 is placed, and first side wall surface opposing portions 41 and 41 opposed to the side wall surfaces 18 of the support rod member 14. And The first bottom wall surface support portion 40 and the first side wall surface opposing portions 41, 41 are integrally formed of a hook-like member.

  The first side wall surface opposing parts 41, 41 are arranged to be separated in the longitudinal direction of the support frame 3, and the separation width of the first side wall surface opposing parts 41, 41 is compared with the width on the end side of the support wedge member 14. Slightly larger. For this reason, the first support portion 36 can allow the support wedge member 14 to be inserted in the width direction of the return path B2 in the space between the first bottom wall surface support portion 40 and the first side wall surface opposite portions 41 and 41. In the roller exchange assisting device in the present embodiment, one set of hangers 12 having the above configuration is prepared.

  As shown in FIG. 4, the placement tool 13 is a member attached so as to be placed on the support frames 3 and 3, in the width direction of the belt B between the forward passage B 1 and the return passage B 2 of the support wedge member 14. It has a configuration in which the end side of the support wedge member 14 is placed to be along. The mounting tool 13 includes a second attachment portion 42 attached to the support frame 3 and a pair of second support portions 43 supporting the end side of the support wedge member 14 at the upper position of the support frame 3.

  The second attachment portion 42 is placed on the upper surface 44 of the support frame 3 so as to overlap the upper surface of the upper wall frame 7, and a pair of mounts that are overlapped from the side on the side wall surface frame 8 of the support frame 3. It is formed in a U-shape in which the lower side is opened from the side walls 45 and 45. In other words, the mounting upper wall 44 and the mounting side walls 45, 45 are formed in a flat plate shape, and the mounting side walls 45, 45 are arranged in the direction orthogonal to the surface direction of the mounting upper wall 44 ing.

  The second support portion 43 is formed in a U-shape from a bowl-like member. The second support portion 43 is a second side wall surface facing portion 46, 46 attached upward from the mounting side walls 45, 45 along the surface direction, and an upper end of the second side wall surface opposite portion 46, 46 It is integrally formed of a delivery rod 47 passed to the department. The respective second support portions 43 are provided on the second attachment portion 42 in a pair so as to be separated in the longitudinal direction of the support frame 3. The separation width between the second support portions 43 is set to be slightly larger than the width on the end side of the support wedge member 14. With this configuration, the mounting tool 13 can allow the support rod member 14 to be inserted in the width direction of the outward path B1 in the space between the second support portions 43. In the roller exchange assisting device in the present embodiment, one set of mounting tool 13 having the above configuration is prepared.

  Below, the usage method of the roller exchange auxiliary | assistance apparatus of the said structure is demonstrated. The roller exchange assisting device in the present embodiment is used to assist the exchange of the upper support roller 1 or the lower support roller 2 when the exchange is performed. First, how to use the roller replacement assisting device in replacing the upper support roller 1 will be described. In this case, a part of the roller replacement assisting device is used for replacing the upper support roller 1. That is, as shown in FIG. 1, the mounting tool 13, the jack device 10, and FIG. 2, the rotation operation tool 11 is used for replacing the upper support roller 1.

  If the upper support roller 1 is to be replaced due to wear or the like, the roller replacement assisting device according to the present embodiment may be located in the vicinity of the upper support roller 1 to be replaced (the upper support roller 1 May be upstream or downstream) to lift the forward path B1. Hereinafter, how to use the roller replacement auxiliary device will be specifically described.

  The operator stops the driving of the belt conveyor, and then mounts the mounting tool 13 on the support frame 3 as shown in FIG. 4 in the vicinity of the upper support roller 1 to be replaced. When the mounting upper wall 44 of the mounting tool 13 is mounted on the upper wall frame 7 of the support frame 3, the mounting side walls 45, 45 face the support frame 3 side wall surface frames 8, 8 and supported The mounting tool 13 can be easily attached to the frame 3. The mounting tool 13 is attached to each of the support frames 3 and 3. The placement tools 13 and 13 are preferably arranged at substantially the same position in the longitudinal direction of the support frames 3 and 3.

  Subsequently, as shown in FIG. 1, the operator causes the jack 15 in the jack device 10 to be positioned on the support wedge member 14, and one end portion side of the support wedge member 14 in one mounting tool 13. It is inserted between the second support portions 43, 43 so as to be placed on the placement upper wall 44 (see FIG. 4). Further, the operator inserts the other end side of the support wedge member 14 on the placement upper wall 44 of the other placement tool 13 and inserts the second support portion 43 between the second support portions 43 and 43. Since the support frame 3, 3 is disposed between the forward path B1 and the return path B2, the jack device 10 is mounted on the support frame 3, 3 via the mounting tool 13, as shown in FIG. The jack 15 can be disposed at the center position in the width direction below the forward path B1.

  The mounting upper wall 44 and the mounting side walls 45, 45 are formed in a flat plate shape, and the mounting side walls 45, 45 are disposed in a direction orthogonal to the surface direction of the mounting upper wall 44, and the second support The second side wall surface facing parts 46, 46 of the part 43 are attached upward from the mounting side walls 45, 45 along the surface direction. For this reason, the jack device 10 can be disposed perpendicularly to the longitudinal direction of the support frames 3, 3.

  At the time of replacement of the upper support roller 1, in the jack device 10, the lifting piece 30 of the jack 51 is used by rotating with respect to the supporting piece 28. That is, as shown in FIG. 5, the operator rotates the lifting piece 30 with respect to the support piece 28 using the ratchet mechanism 29 to conform to the lower surface shape of the forward path B1. Thereafter, the hook 25 of the rotary operation tool 11 is locked to the operated piece 26 of the screw member 24 of the jack 15, and the rotary drive unit of the rotary tool M is attached to the operated portion 33 of the rotary operation tool 11 The person holds the grip 31 and drives the rotating tool M. Then, as shown in FIG. 6, the rotation operation tool 11 rotates about its axis, the connection angle of the link members 20 to 23 is changed so that the jack 15 extends, and the forward path B1 becomes the upper support roller 1. It is lifted so as to move away from the upper side.

  The one end portion side and the other end portion side of the support wedge member 14 have the bottom wall surface 16 mounted on the mounting upper wall 44 in a state of being inserted between the second support portions 43 and 43. The second side wall surface facing portions 46 and 46 of the second support portion 43 are opposed to each other. For this reason, when the jack 15 is extended as described above and the outgoing path B1 is lifted away from the upper support roller 1, even if a force in a direction to tilt the jack 15 acts on the side wall surface, The posture of the support wedge member 14 is maintained by the abutment of the second side wall surface opposing portions 46 and 46 with each other. For this reason, the attitude | position of the jack 15 is also maintained by the substantially perpendicular | vertical direction, and it can raise the going route B1 smoothly.

  The placement tool 13 supports the support wedge member 14 along the width direction of the outward path B1 (the direction orthogonal to the longitudinal direction of the outward path B1). Then, the placement tools 13 and 13 are arranged at substantially the same position in the longitudinal direction of the support frames 3 and 3, so that the support wedge member 14 can be reliably made along the width direction of the outward path B1. For this reason, the jack 15 can also be smoothly lifted so as to be separated from the upper support roller 1 in a state in which the jack 15 is surely along the width direction of the outward path B1.

  Further, in the jack 15, the lifting piece 30 is rotated relative to the supporting piece 28 using the ratchet mechanism 29 so as to conform to the lower surface shape of the outward path B1, and the outward path B1 is lifted. Even when the lifting force works, lifting can be performed without burdening the outward route B1.

  Then, since the forward path B1 is lifted so as to be separated from the upper support roller 1, there is no object in contact with the upper support roller 1, the upper support roller 1 (horizontal roller 5, inclined rollers 6, 6 ) Easy to replace. When the replacement of the upper support roller 1 that has been replaced is completed, the operator again retracts the jack 15 using the rotating tool M, and places the forward path B1 on the upper support roller 1 after replacement.

  Next, a method of using the roller replacement assisting device of the present embodiment in replacing the lower support roller 2 will be described. Even in this case, a part of the roller replacement assisting device is used for replacing the lower support roller 2. That is, as shown in FIG. 7 and the like, the hanger 12, the jack device 10, and the rotation operation tool 11 are used for replacing the lower support roller 2. As shown in FIGS. 7 to 9, when replacing the lower support roller 2, in the jack device 10, the lifting piece 30 of the jack 51 does not rotate, and a posture parallel to the supporting piece 28 is made. Used in

  When replacing the lower support roller 2 due to, for example, the lower support roller 2 being worn, the return path B2 is performed using the roller replacement assisting device according to the present embodiment in the vicinity of the lower support roller 2 to be replaced. Lift up. Hereinafter, how to use the roller replacement auxiliary device will be specifically described.

  The operator stops the drive of the belt conveyor and supports the lower support roller 2 to be replaced in the vicinity of the lower support roller 2 (which may be the upstream side or the downstream side of the lower support roller 2) as shown in FIG. Attach the hangers 12 and 12 to the frames 3 and 3. When the lifting upper wall 37 of the lifting tool 12 is placed on the upper wall frame 7 of the support frame 3, the lifting side walls 38, 38 face the side wall frames 8, 8 of the support frame 3. The support 12 can be easily attached to the support frame 3. At this time, the operator suspends the hanger 12 on the support frame 3 so as to position the first support portion 36 (one side wall 38 for suspension) on the outer side in the width direction of the support frame 3. The first support portion 36 of the holder 12 is suspended on the support frame 3. The hanging upper wall 37 and the hanging side walls 38, 38 are formed in a flat plate shape, and the hanging side walls 38, 38 are disposed in a direction orthogonal to the surface direction of the hanging upper wall 37. For this reason, the first support portion 36 hangs down in a direction orthogonal to the support frames 3 and 3.

  Since the support frame 3, 3 is disposed between the forward path B 1 and the return path B 2, at least the first support portion 36 in the state where the first support portion 36 hangs down on the support frame 3. The one bottom wall support portion 40 is disposed below the return path B2. The hangers 12 are preferably arranged at substantially the same position in the longitudinal direction of the support frames 3.

  Subsequently, as shown in FIG. 3 and FIG. 7, the operator positions the jack 15 in the jack device 10 above the support wedge member 14, and as shown in FIG. 8, one end of the support wedge member 14. The side is placed on the first bottom wall surface support portion 40 of the first support portion 36 of one of the hangers 12 and is inserted between the first side wall surface opposing portions 41 and 41. In addition, the worker places the other end side of the support wedge member 14 on the first bottom wall surface support portion 40 of the first support portion 36 of the other suspension member 12 to form the first side wall surface facing portion 41, Insert between 41. By doing this, the jack device 10 can be suspended on the support frames 3 and 3 via the suspension members 12, and the jack 15 can be disposed at the center position in the width direction below the return path B2.

  Then, as shown in FIG. 9, the worker locks the hook 25 of the rotary operation tool 11 to the operated piece 26 of the screw member 24 of the jack 15, and the rotary drive portion of the rotary tool M is The rotating tool M is driven by being attached to the to-be-operated portion 33 of FIG. Then, since the main body 32 has the grip 31 loosely fitted, the rotary operation tool 11 rotates about its axis, and the connection angle of the link members 20 to 23 is changed so that the jack 15 extends. Since the jack 15 is supported and fixed to the support wedge member 14 suspended by the lifting tool 12, when the jack 15 extends, the return path B2 is lifted so as to be separated upward from the lower support roller 2.

  The bottom wall 16 is mounted on the first bottom wall support 40 while the first support 36 is inserted through the one end and the other end of the support rod member 14, and the first side wall is formed on each side wall 18. The opposing parts 41 and 41 are opposing. Therefore, when extending the jack 15 as described above and lifting the return path B2 away from the lower support roller 2, the side wall surface is obtained even if a force in a direction to tilt the jack 15 acts on the jack 15. The posture of the support wedge member 14 is maintained by the contact of the first side wall surface opposing portions 41 and 41 with each other. For this reason, the attitude | position of the jack 15 is also maintained by the substantially perpendicular | vertical direction, and return path B2 can be lifted smoothly.

  The hanger 12 supports the support wedge member 14 along the width direction of the return path B2 (the direction orthogonal to the longitudinal direction of the return path B2). And by arranging the hangers 12 and 12 in the substantially same part in the longitudinal direction of each support frame 3, 3, the support wedge member 14 is reliably made to be along the width direction of the return path B2. For this reason, the jack 15 can also be smoothly lifted so as to be separated from the lower support roller 2 in a state in which the jack 15 is surely along the width direction of the return path B2.

  Since the return path B2 is lifted so as to be separated from the lower support roller 2, the lower support roller 2 can be easily replaced since there is nothing to contact the lower support roller 2. When the replacement of the lower support roller 2 has been completed, the operator again retracts the jack 15 using the rotating tool M, and places the return path B2 on the lower support roller 2 after replacement.

  As described above, in the roller replacement assisting apparatus of the present embodiment, the jack device 10 having the jack 15 attached to the support rod member 14 is supported by the support frame 3 via the mounting tool 13 and the jack 15 is extended. By lifting the forward path B1 of the belt B so as to be separated from the upper support roller 1, the worker can easily replace the upper support roller 1.

  In particular, the roller replacement assisting apparatus of the present embodiment includes the hanger 12 so that the jack device 10 is suspended on the support frames 3 and 3 via the hanger 12 in order to replace the lower support roller 2. Support to For this reason, even if the legs of the support frames 3 and 3 are supported on the installation surface of the belt conveyor, other facilities are disposed, or dust of the transported object 4 is accumulated on the installation surface, According to such conditions, the roller replacement assisting device can be installed on the support frames 3 and 3.

  The present invention is not limited to the above embodiment. In the above embodiment, the hanger 12 is composed of the first attachment portion 35 and the first support portion 36, and the first support portion 36 is a hooked member which is a separate member from the first attachment portion 35. The configuration in which the first bottom wall surface support portion 40 and the first side wall surface opposite portions 41, 41 are integrally formed is illustrated. However, for example, the first support portion 36 is integrally formed on the first attachment portion 35 as a plate shape extended downward from the first attachment portion 35, and such a first attachment portion 35 (plate In the member, an opening through which the end side of the support wedge member 14 can be inserted can be formed.

  In the above embodiment, the mounting tool 13 is integrally formed of the second attachment portion 42 and the second support portion 43, and the second support portion 43 is formed in a U-shape from a bowl-like member. did. However, each second support portion 43 can also be formed of, for example, a plate-like member, and this plate-like member can also be configured to stand integrally on the mounting upper wall 44.

  In the said embodiment, the jack 15 illustrated the structure attached to the support rod member 14 integrally. However, the jack 15 can also be made detachable to the support rod member 14.

  In the above embodiment, the lifting pieces 30, 30 have been illustrated as being rotatable on the support piece 28 via the ratchet mechanism 29. However, the mechanism for making the lifting pieces 30, 30 rotatable relative to the support piece 28 is not limited to the ratchet mechanism 29, but may be a mechanism capable of holding the tilt of the lifting pieces 30, 30 and releasing the tilt. Just do it.

  DESCRIPTION OF SYMBOLS 1 ... Upper support roller, 2 ... Lower support roller, 3, 3 ... Support frame, 4 ... Conveyance thing, 5 ... Horizontal roller, 6, 6 ... Tilting roller, 7 ... Upper wall frame, 8, 8 ... Side wall surface frame , 10: jack device, 11: rotation operation tool, 12, 12: suspension tool, 13, 13: placement tool, 14: support rod member, 15: jack, 16: bottom wall surface, 17: ceiling wall surface, 18: ... Side wall surface, 20, 21, 22, 23, link member, 24 screw member, 25 hook, 26 operated piece, 27 upper part, 28 support piece, 29 ratchet mechanism, 30, 30 uplift 31: grip portion 32: body portion 33: operated portion 34: bowl-like member 35: first attachment portion 36: first support portion 37: lifting upper wall 38, 38 Side wall for suspension, 40: first bottom wall support portion, 41, 41: first side wall surface opposing portion, 42: second mounting portion, 4 ... second supporting portion, 44 ... mounting upper wall, 45, 45 ... mounting side wall, 46, 46 ... second side wall surface facing portion, 47 ... passing rod, 51 ... jack, B ... belt, B1 ... outward path , B2 ... return path, M ... rotating tool

Claims (8)

An endlessly rotating belt so as to circulate the upper forward path and the lower return path; an upper support roller disposed below the forward path to support the drooping of the belt at a midway portion in its longitudinal direction; A lower support roller for supporting the drooping of the belt at a midway portion in the longitudinal direction, and both sides of the belt in the width direction along the longitudinal direction of the belt and between the forward path and return path; A belt conveyor with a support frame supporting the support rollers,
A support wedge member disposed along the width direction of the belt below the return path;
A mounting portion attached to the support frame, and a support portion supporting the end side of the support wedge member at a lower position of the support frame, and a hanging member suspended to be supported by the support frames ,
A roller replacement assisting device comprising: a lifter which abuts in a width direction on a lower surface of the return path, and a jack supported by the support rod member.   The roller replacement assisting device according to claim 1, wherein the support portion of the hanger is configured to insert the support wedge member in the width direction of the return path.   The support wedge member is formed in a bowl shape having a rectangular cross section, and the support portion of the hanger is opposed to the first bottom wall surface support portion on which the bottom wall surface of the support wedge member is placed and both outer side surfaces of the support wedge member The roller replacement assisting device according to claim 1 or 2, further comprising:   There is provided a mounting tool which is attached to each of the support frames and places the end side of the support wedge member along the width direction of the belt between the forward path and the return path. The roller exchange auxiliary | assistance apparatus in any one of 1 thru | or 3.   The roller exchange assisting device according to claim 4, wherein the mounting tool is configured to insert the support wedge member in the width direction of the forward path.   The support wedge member is formed into a bowl shape having a rectangular cross section, and the mounting tool is a second bottom wall support portion on which the bottom wall surface of the support wedge member is placed, and a second one facing the outer side surfaces of the support wedge member. The roller exchange assisting device according to claim 4 or 5, further comprising a side wall surface facing portion.   The lifting portion of the jack includes lifting pieces on both sides in the width direction, and the lifting pieces are rotatable in a vertical plane by a ratchet mechanism. Roller replacement assistance device as described. The rotary operation tool for rotating the screw member for jack expansion-contraction with which the said jack was equipped,
The rotary operation tool has a cylindrical grip portion, and a hook for inserting the grip portion so as to be loosely fitted and engaging with the operated piece of the screw portion at the tip end, and the electric end of the electric type The roller replacement assistance device according to any one of claims 1 to 7, further comprising an operated portion to which the rotation drive portion is attached.

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