JP2012026501A - Member and method for joining of conveyer belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a member and method for joining of a conveyor belt, which can facilitate joining and release, and ensure flexibility in the longitudinal direction and the width direction of the belt at a joining portion.SOLUTION: The joining member is constituted by aligning a pair of connecting metal fittings 2, 3 fixed to one end 1a and the other end 1b of the conveyor belt, respectively, in a plurality of rows in the belt width direction. One connecting metal fitting 2 has a shape of an L-character in cross section, and a joining pin 8 having a large-diameter head 15 having an inverted trapezoid shape in cross section at its tip is detachably attached to an opposing face 6 opposing the other connecting metal fitting 3. The other connecting metal fitting 3 has a shape which is rotationally symmetric to one connecting metal fitting 2, and an annular locking member 17 which is expandable and contractible in the radial direction and always energized toward the inside of the radial direction is fixed to the middle of a penetration hole 9 formed at the opposing face 7 opposing the one connecting metal fitting 2. The head 15 of the connecting pin 8 is inserted into the penetration hole 9, and the head 15 is locked by expanding and contracting the locking member 17.

Description

  The present invention relates to a joining member and joining method for a conveyor belt, and more particularly, a joining member and joining method for a conveyor belt that can be easily joined and released and ensure flexibility in the belt longitudinal direction and width direction. About.

  Generally, an endless conveyor belt used for a belt conveyor is manufactured by joining both ends of a belt-shaped conveyor belt in the belt longitudinal direction. As a means for joining the conveyor belt, a method for directly joining both ends of the belt (for example, refer to Patent Document 1) and a method for attaching a pair of connection fittings to both ends of the belt (for example, see Patent Document 2). ) Is representative. Among these, the former method of directly joining can maintain the flexibility of the joined portion, but has a problem that it is very difficult to connect and release. For this reason, the latter method using the connection fittings is adopted for conveyor belts that require on-site joining work, for example, conveyor belts for conveyor belts for transporting earth and sand at tunnel construction sites.

  For this connection fitting, a so-called hinge type that can be bent and deformed is used so that the conveyor belt can be smoothly wound around a pulley or the like. In this hinge type, the hinge rotates due to the tension during belt operation. Since the shaft (metal rod) of the part is deformed, there is a problem in durability and the releasing operation is difficult.

JP 54-122580 A JP 2000-44026 A

  An object of the present invention is to provide a joining member and a joining method for a conveyor belt which can be easily joined and released and have improved durability.

  A conveyor belt joining member according to a first aspect of the present invention that achieves the above object is a conveyor belt joining member that joins one end and the other end of a belt-like conveyor belt, wherein the joining member is connected to the conveyor belt. A plurality of a pair of connection fittings fixed respectively to the one end and the other end are arranged in the belt width direction, and the one connection fitting has an L-shaped cross section and the other connection fitting. A connecting pin having a large-diameter head portion with an inverted trapezoidal cross section is attached to the opposite surface facing the connection fitting in a detachable manner, and the other connection fitting is rotationally symmetric with the one connection fitting. And an annular locking member that can be radially expanded and contracted and is always urged radially inward in the middle of a through-hole formed in an opposing surface facing the one connection fitting. Fixed The joint belt is joined by inserting the head portion of the joining pin into the through-hole and pushing the engagement member to expand / contract the head portion to the engagement member. It is characterized by this.

  A conveyor belt joining member according to a second aspect of the present invention that achieves the above object is a conveyor belt joining member that joins one end and the other end of a belt-like conveyor belt, wherein the joining member is connected to the conveyor belt. A plurality of a pair of connection fittings fixed respectively to the one end and the other end are arranged in the belt width direction, and the one connection fitting has an L-shaped cross section and the other connection fitting. A connection hole penetrating the one connection fitting is formed in the facing surface facing the connection fitting, and the other connection fitting has a shape that is rotationally symmetric with the one connection fitting, and the one connection A through hole penetrating the other connecting fitting is formed on the opposite surface facing the fitting, and the conveyor belt is connected by inserting a connecting bolt into the connecting hole and the through hole and tightening with a nut. It is characterized in that.

  The conveyor belt joining method of the present invention that achieves the above object is a conveyor belt joining method for joining one end and the other end of a belt-like conveyor belt, and has a L-shaped cross section, Position where one connecting metal fitting, which is detachably attached to the opposite surface facing the other connecting metal fitting, has a large-diameter head portion with an inverted trapezoidal cross-section at the tip, passes through the side surface of the connecting metal fitting A plurality of the first position adjusting rods are inserted in the adjustment hole while being arranged in the belt width direction, and then fixed to one end of the conveyor belt, respectively, and have a shape that is rotationally symmetric with the one connection fitting. The other connection formed by fixing an annular locking member that can be radially expanded and contracted and is always urged radially inward in the middle of the through hole formed on the facing surface facing the connecting metal Connect the bracket to the connection bracket. A plurality of second position adjusting rods are inserted into the position adjusting hole penetrating the side surface and arranged in the belt width direction, and then fixed to the other end of the conveyor belt, and the head portion of the joining pin is placed in the through hole. The head is locked to the locking member by expanding and contracting the locking member, and the conveyor belt is joined by pulling out the first and second positioning rods. It is characterized by.

  According to the joining member of the conveyor belt of the first invention, the joining pin of the connection fitting fixed to one end portion of the conveyor belt is inserted so as to be pushed into the through hole of the connection fitting fixed to the other end portion. Since the engaging member can be expanded and contracted in the direction and is always urged inward, the conveyor belt can be easily joined and released, and the durability can be improved.

  According to the conveyor belt joining member of the second invention, the connection fitting fixed to one end of the conveyor belt and the connection fitting fixed to the other end are fastened and fixed via a connection bolt penetrating both. Since it did in this way, joining and cancellation | release of a conveyor belt can be performed easily, and durability can be improved.

  According to the method for joining conveyor belts of the present invention, since the position adjusting rod that penetrates a plurality of connecting fittings is used, in addition to the above effects, it is possible to facilitate the alignment and handling of a plurality of male fittings. it can.

  In the above-described joining member and joining method of the conveyor belt of the present invention, it is desirable that the inner diameter of the locking member is larger than the minimum diameter of the head portion and smaller than the maximum diameter. By doing so, it is possible to easily expand the locking member by pushing the inner hole through the tapered portion of the head portion.

It is a perspective view which shows the joining member of the conveyor belt which consists of embodiment of this invention. It is sectional drawing of the male connection metal fitting in the XX arrow view of FIG. FIG. 2 is a cross-sectional view of a female connection fitting as viewed in the direction of arrows XX in FIG. It is drawing which shows the structure of a locking member, Comprising: (a) is a top view, (b) shows sectional drawing in the AA arrow of (a), respectively. It is sectional drawing explaining the state of the joining start in the joining method which consists of embodiment of this invention. It is sectional drawing which shows a deformation | transformation of a locking member. It is sectional drawing explaining the state after joining in the joining method which consists of embodiment of this invention. It is sectional drawing explaining the state of the cancellation | release start in the joining method which consists of embodiment of this invention. It is sectional drawing explaining the state after cancellation | release in the joining method which consists of embodiment of this invention. It is a perspective view which shows the joining member of the conveyor belt which consists of another embodiment of this invention. It is sectional drawing explaining the state at the time of joining in the joining method which consists of another embodiment of this invention.

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

  FIG. 1 shows a joining member of a conveyor belt according to an embodiment of the present invention.

  This conveyor belt joining member (hereinafter simply referred to as “joining member”) is composed of a pair of connection fittings 2 and 3 fixed to one end 1a and the other end 1b in the longitudinal direction of the conveyor belt. It is comprised by arranging two or more along. The pair of connection fittings 2 and 3 includes a male fitting 2 and a female fitting 3, and are fixed to the conveyor belt by fixing bolts 4 and 5, respectively. In the male metal fitting 2 and the female metal fitting 3, a joining pin 8 detachably attached to the opposing surface 6 of the male metal fitting 2 is inserted into a through hole 9 formed in the opposing surface 7 of the female metal fitting 3. They are joined by locking. In addition, the male metal fitting 2 and the female metal fitting 3 are respectively formed with position adjusting holes 10 and 11 penetrating the side surfaces, and a plurality of male metal fittings 2 or 13 are inserted by inserting position adjusting rods 12 and 13 described later. The female metal fitting 3 can be skewered.

  As shown in FIG. 2, the male metal fitting 2 has an L-shaped cross section, and the joining pin 8 is detachably screwed into an attachment hole 14 formed in the facing surface 6. A large-diameter head portion 15 having an inverted trapezoidal cross section is provided at the distal end portion of the joining pin 8.

  As shown in FIG. 3, the female metal fitting 3 has a shape that is rotationally symmetric with the male metal fitting 2, and the end of the through hole 9 formed in the facing surface 7 is open at one end. A bottom cylindrical back cover 16 is detachably attached. A locking member 17 and an annular holding lid 18 fixed to the inner surface of the through hole 9 are sequentially arranged on the back cover 16 on the through hole 9 side. The inner space (cylindrical inside) of the back cover 16 is sized to accommodate the head portion 15 of the joining pin 8.

  As shown in FIG. 4, the locking member 17 has an outer periphery of an annular metal plate equally divided in the circumferential direction (in this example, divided into four) surrounded by an elastic material 19 such as rubber or spring steel. . Accordingly, the plurality of pieces 20 made of equally divided metal plates are always urged inward by the elastic material 19. The peripheral edge 22 of the inner hole 21 of the locking member 17 is chamfered so that its diameter increases slightly upward. The outer diameter R of the locking member 17 is smaller than the inner diameter of the through hole 9. The inner diameter r is larger than the minimum diameter of the head portion 15 of the joining pin 8 and smaller than the maximum diameter.

A method for joining and releasing a conveyor belt using such a joining member will be described below.
First, after aligning the plurality of male metal fittings 2 along the width direction of the conveyor belt, the position adjusting rod 12 is inserted into the position adjusting hole 10 to be skewered. By doing in this way, since several male type metal fittings 2 are integrated, each position alignment and handling can be performed easily. Although the number of male metal fittings 2 is desirably 3 or more, it is necessary to make the total width thereof the same as that of the conveyor belt. And each male metal fitting 2 is fixed to the one end part 1a of a conveyor belt with the volt | bolt 4 for fixation.

  The same number of the female metal fittings 3 paired with the male metal fittings 2 is fixed to the other end 1b of the conveyor belt in the same manner while using another position adjusting rod 13.

  Then, as shown in FIG. 5, the joining pin 8 is pushed and inserted into the through hole 9 so that the opposing surface 6 of the male metal fitting 2 and the opposing surface 7 of the female metal fitting 3 are brought into contact with each other. When the taper of the head portion 15 of the joining pin 8 comes into contact with the inner peripheral edge 22 of the locking member 17, as shown in FIG. Since 21 is enlarged, the head portion 15 can pass therethrough. As shown in FIG. 7, in a state where the head portion 15 passes through the locking member 17 and is positioned in the back cover 16, the plurality of pieces 20 of the locking member 17 are contracted by the elastic force of the elastic material 19. In order to return to this state (see FIG. 4A), the head portion 15 is locked by the locking member 17 and the holding lid 18 so that the joining pin 8 does not come out upward.

  Finally, the joining is completed by pulling out the respective position adjusting rods 12 and 13.

  To release the joined conveyor belt, after removing the back cover 16 (see FIG. 8), remove the joining pin 8 from the mounting hole 14 of the male metal fitting 2 using an appropriate jig (see FIG. 9). ), Taking out from the opposite side of the through hole 9 to the outside.

  Since the joining is performed in this manner, joining and releasing of the one end 1a and the other end 1b of the conveyor belt can be performed by a simple operation, so that joining and releasing of the conveyor belt is facilitated. Moreover, since the conveyor belt is joined by the stress in the shearing direction of the joining pin 8, durability can be improved even when a conventional hinge-type connection fitting is used.

  Furthermore, since a plurality of the male metal fittings 2 and the female metal fittings 3 are arranged in the belt width direction, the joint portion can be bent and deformed to ensure flexibility in the belt width direction (belt trough property). Can do.

  In addition to the effects described above, the head 15 of the joining pin 8 of the male metal fitting 2 is only locked in the through hole 9 of the female metal fitting 3, so that the center of the joining portion is flexible (slight backlash). Therefore, the bent portion can be bent and deformed, and the flexibility in the belt longitudinal direction can be ensured.

  The effect of the flexibility in the longitudinal direction of the belt can be ensured by making the inner diameter of the back cover 16 larger than the maximum outer diameter of the head portion 15 of the joining pin 8, but the difference is 1 It is preferable to be about 5 to 3.0 mm. When it is less than 1.5 mm, the flexibility at the center of the joint portion is not sufficient. On the other hand, if it exceeds 3.0 mm, the flexibility becomes too large, and the joining pin 8 may come off the locking member 17 or the durability of the joining pin 8 may be reduced due to dynamic fatigue.

  FIG. 10 shows a joining member of a conveyor belt according to another embodiment of the present invention.

  This joining member is configured by arranging a plurality of a pair of connection fittings 23 and 24 having the same external shape as the connection fitting of the above-described embodiment along the belt width direction. The pair of connection fittings 23 and 24 includes a male fitting 23 and a female fitting 24, and are fixed to one end 1a and the other end 1b in the longitudinal direction of the conveyor belt by fixing bolts 4 and 5, respectively.

  Similarly to the above-described embodiment, the male metal fitting 23 and the female metal fitting 24 are respectively formed with position adjusting holes 10 and 11 penetrating the side surfaces. The male metal fitting 23 or the female metal fitting 24 can be skewered.

  As shown in FIG. 11, the male metal fitting 2 and the female metal fitting 3 include a connection hole 25 that penetrates the facing surface 6 of the male metal fitting 23 and a through hole 26 that penetrates the opposing surface 7 of the female metal fitting 24. In addition, the connecting belt 27 is inserted and fastened with a nut 28 to be fixed, so that the conveyor belt is joined.

  The joined conveyor belt is released by loosening the nut 28 and pulling out the connection bolt 27.

  Since the joining is performed in this manner, joining and releasing of the one end 1a and the other end 1b of the conveyor belt can be performed by a simple operation, so that joining and releasing of the conveyor belt is facilitated. Further, since the conveyor belt is joined by the stress in the shear direction of the connection bolt 27, durability can be improved even when a conventional hinge-type connection fitting is used.

  Furthermore, since a plurality of male metal fittings 23 and female metal fittings 24 are arranged in the belt width direction, the joint portion can be bent and deformed to ensure flexibility in the belt width direction (belt trough property). Can do.

  When the belt conveyor is used, the durability of the connection bolt 27 gradually decreases due to dynamic fatigue or the like. In this embodiment, the connection bolt 27 is only fixed by the nut 28 as described above. Can be easily replaced.

  In any of the embodiments described above, a plurality of joining fittings in which the male fittings 2 and 23 and the female fittings 3 and 24 are integrated may be arranged with a predetermined gap therebetween. By doing so, further flexibility in the belt width direction can be secured.

  Although the use of the joining member and joining method of the conveyor belt of this invention is not specifically limited, In a tunnel construction site, it is used suitably for the conveyor belt of the conveyor belt of the earth and sand extended according to an excavation condition.

1a Conveyor belt one end 1b Conveyor belt other end 2, 23 Male metal fittings 3, 24 Female metal fittings 4, 5 Fixing bolts 6, 7 Opposing surface 8 Joining pins 9, 26 Through holes 10, 11 Position adjustment hole 12, 13 Position adjusting rod 14 Mounting hole 15 Head part 16 Back cover 17 Locking member 18 Holding cover 19 Elastic material 20 Top 21 Inner hole 22 Peripheral part 25 Connection hole 27 Connection bolt 28 Nut

Claims (13)

A conveyor belt joining member for joining one end and the other end of a belt-like conveyor belt,
The joining member is configured by arranging a plurality of a pair of connection fittings fixed to one end and the other end of the conveyor belt, respectively, in the belt width direction,
The one connection fitting has an L-shaped cross section, and a joining pin having a large-diameter head portion having an inverted trapezoidal cross section at the tip thereof can be attached to and detached from the opposing surface facing the other connection fitting. Attached,
The other connection fitting has a shape that is rotationally symmetric with the one connection fitting, and can be radially expanded and contracted in the middle of a through-hole formed in an opposing surface facing the one connection fitting. An annular locking member that is constantly urged radially inward is fixed,
The conveyor belt is joined by inserting the head portion of the joining pin so as to be pushed into the through-hole and expanding and contracting the locking member to lock the head portion to the locking member. Conveyor belt joining member.   A connecting member for a conveyor belt, wherein a connecting pin locked to the locking member is removed from the one connection fitting, and the removed connecting pin is pulled out through the through hole to release the conveyor belt.   The joining member of the conveyor belt according to claim 1 or 2, wherein an inner diameter of the locking member is larger than a minimum diameter of the head portion and smaller than a maximum diameter.   The joining member of the conveyor belt in any one of Claims 1-3 which the said locking member surrounds the cyclic | annular metal plate equally divided by the circumferential direction with the elastic material.   The joining member of the conveyor belt in any one of Claims 1-4 which formed the position adjustment hole which can insert the position adjustment rod which penetrates this some connection metal fitting simultaneously in the side surface of the said connection metal fitting.   The conveyor belt joining member according to claim 1, wherein a plurality of the connection fittings are arranged with a predetermined gap. A conveyor belt joining method for joining one end and the other end of a belt-like conveyor belt,
One connection fitting having an L-shaped cross section and a connecting pin having a large-diameter head portion having an inverted trapezoidal cross section at the tip thereof is detachably attached to the opposing surface facing the other connection fitting. , A plurality of arrangement in the belt width direction while inserting the first position adjustment rods into the position adjustment hole that penetrates the side surface of the connection fitting, and then fixed to one end of the conveyor belt,
It has a shape that is rotationally symmetric with the one connection fitting, and can be radially expanded and contracted in the middle of a through-hole formed in a facing surface facing the one connection fitting, and always inward in the radial direction. A plurality of other connection fittings formed by fixing the biased annular locking member are arranged in the belt width direction while inserting a second position adjustment rod into a position adjustment hole penetrating the side surface of the connection fitting. To the other end of the conveyor belt,
Insert the head portion of the joining pin so as to push it into the through hole, and expand and contract the locking member to lock the head portion to the locking member,
A method for joining conveyor belts, wherein the conveyor belts are joined by pulling out the first and second positioning rods.   The conveyor belt according to claim 7, wherein a joining pin locked to the locking member is detached from the one connection fitting, and the removed joining pin is pulled out to the outside through the through hole to release the conveyor belt. Joining method.   The method for joining conveyor belts according to claim 7 or 8, wherein an inner diameter of the locking member is larger than a minimum diameter of the head portion and smaller than a maximum diameter.   The conveyor belt joining method according to any one of claims 7 to 9, wherein the locking member surrounds an annular metal plate equally divided into a plurality in the circumferential direction with an elastic material.   The method for joining conveyor belts according to claim 7, wherein a plurality of the connection fittings are arranged with a predetermined gap. A conveyor belt joining member for joining one end and the other end of a belt-like conveyor belt,
The joining member is configured by arranging a plurality of a pair of connection fittings fixed to one end and the other end of the conveyor belt, respectively, in the belt width direction,
The one connection fitting has an L-shaped cross section, and a connection hole penetrating the one connection fitting is formed on an opposing surface facing the other connection fitting,
The other connection fitting has a shape that is rotationally symmetric with the one connection fitting, and is formed with a through-hole penetrating the other connection fitting on an opposing surface facing the one connection fitting,
A joint member for a conveyor belt, wherein the conveyor belt is joined by inserting a connection bolt into the connection hole and the through hole and tightening with a nut.   The joining member of the conveyor belt of Claim 12 which cancels | releases the said conveyor belt by loosening the nut which clamps the said connection bolt, and pulling out the connection bolt inserted in the said connection hole and a through-hole.

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