JP2010159125A - Belt conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively perform a belt conveyor device by maximally using a member used in a curved section in common with a member of a straight line section, in the belt conveyor device for discharging debris excavated by one endless conveyor belt of continuing in the straight line section and the curved section, to the outside of a pit in tunnel work. <P>SOLUTION: A carrier roller 2 is journaled to a roller frame 3 of the substantially same width between the straight line section and the curved section, and its roller frame 3 is installed in a pair of right-left side frames 4 in common between the straight line section and the curved section. Its side frames 4 are placed on a stand 5, and are continuously arranged in a plurality along a straight line and a curve, and the mutual front-rear ends of the continuously arranged side frame 4 are connected by a connecting tool, and a return roller 6 is journaled between the side frames 4 or on the stand 5. Moreover, the connecting tool is formed in a cross-sectional recessed shape having a width wider than a width of the side frames 4, and a plurality of side frames 4 are bent in a multistage shape by a clearance formed between the side frames 4 and the connecting tool in the curved section. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a belt conveyor apparatus for discharging a gap excavated by a single endless conveyor belt in which a straight section and a curved section are continuous in tunnel construction.

  Conventionally, in tunnel construction, excavated gaps are conveyed from the face to the outside of the pit by a belt conveyor device and discharged, and a belt conveyor device used for this is disclosed in Patent Document 1. In this technique, a straight section and a curved section are made continuous using a single endless conveyor belt, a plurality of carrier rollers having a small width are provided in the left-right direction, and the carrier rollers at the left and right ends are inclined inward to convey the conveyor belt. Is deformed into a substantially U-shaped cross-section so that it can be stably conveyed so that the slip does not fall.

  By the way, in the said technique, although the frame member used for a straight section is using the general-purpose thing, the frame member used for a curved section is produced by custom-made at every construction, and it is high-cost. It was.

Japanese Patent No. 355796

  The problem to be solved by the present invention is to solve these conventional problems, and to make the members used in the curved section as common as the members in the straight section as low as possible so as to be implemented at low cost.

The configuration of the present invention that solves this problem is as follows.
1) A belt conveyor device that discharges a gap excavated by a single endless conveyor belt, which has a continuous straight section and a curved section in tunnel construction, and the support structure in the middle of the conveyor belt straightens the carrier roller. The section frame and the curve section are supported by a roller frame having substantially the same width, and the roller frame is installed on a pair of left and right side frames that are common to the straight section and the curve section, and the pair of left and right side frames is used as a mount. It is a structure in which a plurality of side frames are placed along a straight line and a curved line, the front and rear ends of the side frames are connected by a connecting tool, and a return roller is pivotally supported between a pair of left and right side frames or a frame, and The connecting tool has a concave cross section that is wider than the width of the side frame. The belt conveyor device 2 is characterized in that the belt is bent in a multistage manner and the return roller in the curved section is pivotally supported so that the shaft is vertically supported or the inside of the curve is upward. The belt conveyor device 3) described in 1) above, wherein the curvilinear section gantry is vertically separated so that the upper gantry can adjust the horizontal tilt with respect to the lower gantry, 1) or 2) The belt conveyor device 4) described above 1) The belt conveyor device according to any one of 1) to 3) is provided with a belt storage device that accumulates surplus of the conveyor belt in advance and feeds it according to the extension of the conveying distance. A self-propelled tailpiece cart with a tail pulley is arranged at the rear position, and the tailpiece cart is advanced while feeding the conveyor belt from the belt storage device according to the excavation. Allowed to be able to stretch the conveyance distance of shear and, in the belt conveyor.

  According to the present invention, the width of the roller frame for the straight section and that for the curved section are set to substantially the same width, and the side frame coupling tool is recessed in a cross section wider than the width of the side frame. When constructing a belt conveyor in a curved section, multiple side frames used for the straight section are diverted, and the gap formed between the side frame and the connector is multistage. Continue to be bent to Therefore, a side frame that has been conventionally produced as a special order can be made common, and a significant cost reduction can be achieved.

It is explanatory drawing of the front of the belt conveyor apparatus of an Example. It is explanatory drawing of the back of the belt conveyor apparatus of an Example. It is explanatory drawing of the linear area of the belt conveyor apparatus of an Example. It is explanatory drawing of the curve area of the belt conveyor apparatus of an Example. It is explanatory drawing of the side frame of an Example. It is explanatory drawing of extending | stretching of the belt conveyor apparatus of an Example. It is explanatory drawing which shows the connection of the side frame of an Example.

  In the present invention, when the configuration according to claim 2 is provided, the load on the inner side of the curve acting on the return-side conveyor belt is prevented in the curved section, and the return-side conveyor belt can be driven stably. Further, when the configuration according to claim 3 is provided, in the curved section, the inclination of the roller frame in the left-right direction can be adjusted so as to prevent the load in the curved inner direction acting on the conveyor belt on the conveying path side. The conveyor belt can be driven more stably. Embodiments of the present invention will be specifically described below with reference to the drawings.

  1 is an explanatory view of the front of the belt conveyor apparatus of the embodiment, FIG. 2 is an explanatory view of the rear of the belt conveyor apparatus of the embodiment, FIG. 3 is an explanatory view of a straight section of the belt conveyor apparatus of the embodiment, and FIG. FIG. 5 is an explanatory view of the side frame of the embodiment, FIG. 6 is an explanatory view of the extension of the belt conveyor device of the embodiment, and FIG. 7 is a connection of the side frame of the embodiment. It is explanatory drawing shown.

  In the figure, 1 is a conveyor belt, 2 is a carrier roller, 3 is a roller frame, 3a is a latching portion, 3b is a stand, 3c is a skirt, 4 is a side frame, 4a is a support portion, 4b is a bolt hole, and 4c is a connector. 4d is a bolt hole, 4e is a spacer, 4f is a bolt, 4g is a fixture, 5 is a frame, 5a is an upper frame, 5b is a lower frame, 5c is a pivot, 5d is a cant adjustment bolt, 6 is a return roller, 6a Is a guide roller, 7 is a tailpiece carriage, 7a is a deck, 7b is a crawler, 7c is a tail pulley, 7d is a support, 7e is a conveyor, 8 is a head pulley, 9 is a belt storage device, 10 is a crusher, and 11 is an outboard conveyor. , G is a natural ground, and T is a tunnel.

  As shown in FIG. 3, the roller frame 3 in the straight section of the present embodiment has a width of 805 mm, has hook-like hooking portions 3a at the left and right ends thereof, and has stands 3b attached to the left and right upper surfaces. Thus, the carrier roller 2 is pivotally supported at an inclination angle of 27 degrees so that the inner side faces downward, and the carrier roller 2 is pivotally supported horizontally at an intermediate portion thereof. The carrier roller 2 has an outer diameter of 101.6 mm and a length of 230 mm.

  The roller frame 3 in the curved section has a width of 805 mm, which is the same as the roller frame 3 in the straight section, as shown in FIG. 4, has hook-shaped hooks 3a at the left and right ends, and has stands 3b on the left and right upper surfaces. The carrier roller 2 is supported by the stand 3b obliquely so that the inner side faces downward. The carrier roller 2 outside the curve is supported at an inclination angle of 27 degrees, the second carrier roller 2 from the inside of the curve is supported at an inclination angle of 30 degrees, and the outermost carrier roller 2 inside the curve is 75 degrees. The intermediate carrier roller 2 is supported horizontally. The carrier roller 2 outside the curve may be provided with a skirt 3c that suppresses the rising of the conveyor belt 1 due to tension. The carrier roller 2 has an outer diameter of 101.6 mm, lengths of 230 mm and 150 mm, and the carrier roller 2 at both ends is the same as the carrier roller 2 in the straight section.

  The side frame 4 is common to both the straight section and the curved section. As shown in FIG. 5, the side frame 4 is a pipe having a square section with a length of 3048 mm and a width of 50 mm, and a height for installing the roller frame 3 on the upper surface. Four support portions 4a having a length of 154 mm are formed at equal intervals, and bolt holes 4b are formed on one end of the side frame 4 on the left and right. The connector 4c has a concave section of 200 mm in length and an inner width of 60 mm, and has an elliptical bolt hole 4d extending in the front-rear direction, and is fixed to the other end of the side frame 4 via a spacer 4e. ing.

  As shown in FIGS. 3 and 4, the gantry 5 is composed of a common frame for both the straight section and the curved section. As shown in FIG. 4, the pedestal 5 installed in the curved section is composed of an upper pedestal 5a and a lower pedestal 5b, pivoting the curved outer sides of the upper pedestal 5a and the lower pedestal 5b, and tilting the upper pedestal 5a. A cant adjusting bolt 5d that can adjust the angle within a range of 0 to 6 degrees with respect to the horizontal is provided. On the platform 5 in the curved section, the return roller 6 is pivotally supported at an inclination angle of 40 degrees so that the inside of the curve faces upward, and protection against drooping of the conveyor belt 1 at the time of stop and a sudden change in belt tension during operation. As an example, guide rollers 6a are axially supported at both ends of the return roller 6 in the orthogonal direction. The return roller 6 has an outer diameter of 101.6 mm, a length of 710 mm, and uses a common straight section and curved section.

  The tail piece carriage 7 has a tail pulley 7c disposed on a deck 7a that is self-propelled by a crawler 7b, and supports 7d that support a pair of left and right side frames 4 are attached to both sides of the tail pulley 7c. A conveyor 7e for conveying the gap to the conveyor belt 1 is disposed. The belt storage device 9 is used for folding and accumulating an excess conveyor belt 1 and extending the belt conveyor device by unwinding the conveyor belt 1 according to excavation. The crusher 10 is for excavating the natural ground G with a face and transporting the gap to the conveyor 7e of the tailpiece carriage 7. The outside conveyor 11 is for transporting the gap discharged by the belt conveyor device to a treatment plant or a truck that conveys the waste to the treatment plant.

  In this embodiment, as shown in FIGS. 1 and 2, a crusher 10 is arranged on the face, a tail piece carriage 7 is arranged behind the crusher 10, and a pair of left and right for stretching is attached to a support 7 d of the tail piece carriage 7. The side frame 4 is placed, the belt storage device 9 is arranged behind the tailpiece carriage 7, the head pulley 8 and the outside conveyor 11 are arranged outside the tunnel T, and the conveyor belt 1 fed out from the belt storage device 9 is attached. It spans between the head pulley 8 and the tail pulley 7c provided in the tail piece carriage 7.

  The frame 5 is installed along the wall of the tunnel T in the section from the wellhead to the rear position of the tailpiece cart 7, and a pair of left and right side frames 4 are mounted on the frame 5 and fixed with fixing tools 4g. The front and rear ends of the side frame 4 on the tailpiece carriage 7 are connected to each other by a connector 4c and a bolt 4f, and a latching portion 3a of the roller frame 3 is installed between the support portions 4a of the pair of left and right side frames 4, A belt conveyor device is constructed by pivotally supporting a return roller 6 between the side frames 4.

  The belt conveyor device is operated and the ground G is excavated by the crusher 10. The excavated gap is put into the conveyor 7e of the tailpiece carriage 7, transported to the conveyor belt 1, transported out of the mine by the conveyor belt 1, discharged, and further transported to the treatment plant or the treatment plant by the outer conveyor 11. Transport to etc.

  When excavation progresses by the length of about one side frame 4, as shown in FIG. 6 (a), the belt storage device 9 feeds the excess conveyor belt 1 while the tailpiece carriage 7 moves forward. Next, as shown in FIG. 6 (b), the worker lays the roller frame 3 on the support portions 4 a of the pair of left and right side frames 4 on the support 7 d in the deck 7 a of the tailpiece carriage 7. Next, as shown in FIG. 6 (c), an additional frame 5 is installed behind the tailpiece carriage 7, and the conveyor belt 1 extended by the carrier roller 2 and the return roller 6 is supported. In the tailpiece carriage 7, an additional side frame 4 is mounted on the support 7d for later extension, and the front and rear ends of the front and rear side frames 4 are connected to each other by a connector 4c and a bolt 4f. This is repeated with excavation.

  In the connection of the side frames 4, as shown in FIG. 7A, a spacer 4e is interposed in a gap formed between the side frame 4 and the connector 4c in the straight section. In the curved section, as shown in FIG. 7B, a curved line is formed by bending in a multistage manner by a gap formed between the side frame 4 and the connector 4c. At this time, the bolt 4f is tightened at the inner position of the bolt hole 4d so that the front and rear side frames 4 are close to each other inside the curve, and the outside of the curve is outside the bolt hole 4d so that the front and rear side frames 4 are separated from each other. The bolt 4f is tightened at the position, and the length inside and outside the curve is adjusted. As a result, the side frame 4 can be commonly used for both the straight section and the curved section, and the side frame 4 that has been conventionally produced as a custom-made one can be used in common to achieve a significant cost reduction.

  The technology of the present invention is used for the purpose of discharging excavation gaps in tunnel construction.

DESCRIPTION OF SYMBOLS 1 Conveyor belt 2 Carrier roller 3 Roller frame 3a Stop part 3b Stand 3c Skirt 4 Side frame 4a Support part 4b Bolt hole 4c Connection tool 4d Bolt hole 4e Spacer 4f Bolt 4g Fixing tool 5a Upper frame 5b Lower frame 5c Lower frame 5c 5d Kant adjustment bolt 6 Return roller 6a Guide roller 7 Tail piece cart 7a Deck 7b Crawler 7c Tail pulley 7d Support 7e Conveyor 8 Head pulley 9 Belt storage device 10 Crusher 11 Outer conveyor G Ground mountain T Tunnel

Claims (4)

  A belt conveyor device for discharging a gap excavated by a single endless conveyor belt in which a straight section and a curved section are continuous in tunnel construction, and a support structure in the middle of the conveyor belt uses a carrier roller for a straight section. The curved frame section is pivotally supported by a roller frame having substantially the same width, the roller frame is mounted on a pair of left and right side frames that are common to the straight section section and the curved section section, and the pair of left and right side frames are mounted on a gantry. A structure in which a plurality of continuous side frames are provided along a straight line and a curved line, and the front and rear ends of the provided side frames are connected by a connecting tool, and a return roller is pivotally supported between a pair of left and right side frames or a frame. Has a concave cross-section that is wider than the width of the side frame, and in the curved section, multiple side frames are added by the gap formed between the side frame and the connector. Manner bent so characterized by being continuously provided with a belt conveyor.   The belt conveyor device according to claim 1, wherein the return roller in the curved section is pivotally supported in a vertical manner so that the shaft is vertically supported or the inside of the curve faces upward.   The belt conveyor apparatus according to claim 1 or 2, wherein the frame section has a structure in which the frame is separated vertically, and the upper frame can adjust the inclination in the left-right direction with respect to the lower frame.   The belt conveyor device according to any one of claims 1 to 3, wherein a belt storage device that accumulates excess conveyor belt in advance and feeds it in accordance with the extension of the conveying distance is provided, and is capable of self-propelled with a tail pulley at the rear position of the face. A belt conveyor device in which a tailpiece carriage is arranged and the tailpiece carriage is advanced while the conveyor belt is fed out from the belt storage device according to the excavation to extend the conveying distance of the gap.

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