Conveyor device and frame structure

Abstract

To provide a conveyor device and the like which are simpler and small-sized.SOLUTION: A conveyor device includes: first and second slide frames 11 fixed to a support pillar guide rail GR so as to slide; a separation frame 12 positioned away from the support pillar guide rail; and a frame structure which has two three-dimensional parallel link mechanisms formed by first and second links (L1) for forward path belt installation for installing a forward path conveyor belt 21 for connecting the first slide frame to the separation frame, forward path opposing first and second links (L3) opposing to the first and second links for forward path belt installation in the frame direction orthogonal to the guide direction of the support pillar guide rail, first and second links (L2) for return path belt installation for installing a return path conveyor belt 22, and return path opposing first and second links (L4) opposing to the first link for the return path belt installation in the frame direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a conveyor device and a frame structure. [Background technology]

[0002] At excavation sites, conveyor devices are used to transport excavated soil and sand. For example, Patent Document 1 discloses a conveyor device including: a plurality of stage frames arranged to be able to deploy and retract along a telescoping direction; a plurality of conveyor frames suspended in a staggered pattern across the plurality of stage frames; and an endless conveyor belt whose outward path is wound in a spiral manner so as to transport a load along the plurality of conveyor frames, and provided at the positions of the plurality of stage frames with pivotal support units that support the plurality of conveyor frames at their end positions so as to be able to pivot about axes perpendicular to the telescoping direction; and a width correction unit that slides and moves the support position of at least one end of each conveyor frame to absorb changes in length in the front-to-rear direction in response to the deployment and retraction movements. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-179973 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional technology, a width correction unit that slides to absorb changes in length in the front-to-rear direction due to expansion and contraction of the conveyor device is required, and the length of the belt conveyor is corrected by adjusting the position of the terminal pulley. Therefore, this belt length correction (accumulator unit) is necessary at the lower terminal of the conveyor device, which hinders simplification and miniaturization.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a simpler and more compact conveyor device. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the invention of claim 1 provides a conveyor device including a frame structure slidable relative to a column guide rail, and an outgoing conveyor belt and a returning conveyor belt attached to the frame structure, the frame structure including a first slide frame slidably fixed to the column guide rail, a second slide frame slidably fixed to the column guide rail and positioned adjacent to the first slide frame, a separation frame positioned away from the column guide rail, and a separation frame slidably fixed to the first slide frame. and a second link mechanism connecting the second slide frame and the separation frame, and the first link mechanism includes an outgoing belt installation first link for installing the outgoing conveyor belt, an outgoing opposing first link that faces the outgoing belt installation first link in a frame direction perpendicular to the guide direction of the support guide rail, a return belt installation first link for installing the return conveyor belt, and a return opposing first link that faces the return belt installation first link in the frame direction. the second link mechanism has an outgoing belt installation second link for installing the outgoing conveyor belt, an outgoing opposing second link that faces the outgoing belt installation second link in the frame direction, a homeward belt installation second link for installing the homeward conveyor belt, and a homeward opposing second link that faces the homeward belt installation second link in the frame direction, and the outgoing belt installation first link and the homeward belt installation first link, and the outgoing opposing first link and the homeward opposing first link are connected to the first slide frame and the separation The outgoing belt installation second link and the homeward belt installation second link, and the outgoing opposing second link and the homeward opposing second link, form parallel link mechanisms together with the second slide frame and the separation frame, and the outgoing belt installation first link and the outgoing opposing second link, the outgoing belt installation second link and the outgoing opposing first link, the homeward belt installation first link and the homeward opposing second link, and the homeward belt installation second link and the homeward opposing first link, respectivelyThe link shaft is common to the separation frame.

[0007] The invention described in claim 2 is characterized in that, in the conveyor device described in claim 1, the first link for installing the outgoing belt, the second opposing link for installing the outgoing belt, the second link for installing the outgoing belt, and the first opposing link for installing the outgoing belt share a first link shaft in the separation frame, and the first link for installing the return belt, the second opposing link for installing the return belt, the second link for installing the return belt, and the first opposing link for installing the return belt share a second link shaft in the separation frame.

[0008] The invention described in claim 3 is characterized in that, in the conveyor device described in claim 1 or claim 2, the links belonging to the first link mechanism are located on one side and the links belonging to the second link mechanism are located on the other side in the frame direction.

[0009] Furthermore, the invention described in claim 4 is characterized in that, in the conveyor device described in claim 1 or claim 2, the first link for installing the outgoing belt, the second link for installing the outgoing belt, the first link for installing the return belt, and the second link for installing the return belt each have a main body portion that is shifted to one side in the guide direction from a line connecting the centers through which the link axes of the connecting portions at both ends pass.

[0010] Furthermore, the invention described in claim 5 is characterized in that, in the conveyor device described in claim 4, the separation frame has a main body portion that is shifted away from the link shaft toward the side away from the support guide rail.

[0011] Furthermore, the invention described in claim 6 is characterized in that, in the conveyor device described in claim 5, the first slide frame and the second slide frame have a slide portion that can slide on the support column guide rail and a connecting portion that connects to a link belonging to the first link mechanism, and the slide portion protrudes toward the support column guide rail at both ends in the frame direction, and the connecting portion protrudes toward the opposite side of the support column guide rail at both ends in the frame direction.

[0012] The invention described in claim 7 is the conveyor device described in claim 1 or claim 2, wherein the outgoing conveyor belt and the return conveyor belt are sealed conveyor belts that are folded in half in the width direction to enclose the transported object, and the edges where both ends of the folded sealed conveyor belt in the width direction meet are supported by a transport guide member, and a main body of the first return belt installation link or the second return belt installation link has a belt twisting portion to which the transport guide member can be attached so that the twisted return conveyor belt can be supported from the frame direction.

[0013] The invention described in claim 8 provides a system including a first slide frame slidably fixed to a support guide rail, a second slide frame slidably fixed to the support guide rail and positioned adjacent to the first slide frame, a separation frame positioned away from the support guide rail, a first link mechanism connecting the first slide frame to the separation frame, and a second link mechanism connecting the second slide frame to the separation frame, wherein the first link mechanism has an outgoing belt installation first link for installing an outgoing conveyor belt, an outgoing opposite first link that faces the outgoing belt installation first link in a frame direction perpendicular to the guide direction of the support guide rail, a return belt installation first link for installing a return conveyor belt, and a return opposite first link that faces the return belt installation first link in the frame direction, and the second link mechanism has an outgoing belt installation second link for installing the outgoing conveyor belt, and a second link mechanism connecting the outgoing belt installation second link in the frame direction. a return belt installation second link for installing the return conveyor belt; and a return belt installation second link for installing the return belt in the frame direction, wherein the return belt installation first link, the return belt installation first link, and the return belt installation first link form parallel link mechanisms together with the first slide frame and the separation frame, and the return belt installation second link and the return belt installation second link form parallel link mechanisms together with the first slide frame and the separation frame, The outward opposing second link and the return opposing second link form parallel link mechanisms together with the second slide frame and the separation frame, and the outward belt installation first link and the outward opposing second link, the outward belt installation second link and the outward opposing first link, the return belt installation first link and the return opposing second link, and the return belt installation second link and the return opposing first link each share a link axis in the separation frame. [Effects of the Invention]

[0014] According to the present invention, a frame structure having two three-dimensional parallel link mechanisms formed by first and second slide frames slidably fixed to the support guide rail, a separation frame located away from the support guide rail, first and second outward belt installation links for installing an outward conveyor belt to connect the first slide frame and the separation frame, outward opposing first and second links that face the first and second outward belt installation links in a frame direction perpendicular to the guide direction of the support guide rail, first and second return belt installation links for installing an inward conveyor belt, and return opposing first and second links that face the first return belt installation link in the frame direction, can expand and contract in the guide direction by changing the distance between adjacent first and second slide frames, thereby eliminating the need for a width correction unit that slides, and the device can be made simpler and more compact. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view showing an example of a schematic configuration of a conveyor device according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing an example of a frame structure of the conveyor device of FIG. [Figure 3] FIG. 3 is a schematic diagram showing a part of the frame structure of FIG. 2. [Figure 4] 3 is a perspective view showing an example of the frame structure of FIG. 2 in a contracted state. FIG. [Figure 5] FIG. 2 is a perspective view showing an example of a sealed belt conveyor system of the conveyor device of FIG. 1. [Figure 6] FIG. 1 is a structural explanatory diagram showing a combination of a frame structure and a sealed belt conveyor. [Figure 7] FIG. 10 is a perspective view showing an example of a lifting block that lifts and lowers a slide frame. [Figure 8] 10 is a flowchart illustrating an example of an operation for assembling the conveyor device. [Figure 9] FIG. 10 is a perspective view showing an example of assembly of a conveyor device. [Figure 10]FIG. 10 is a perspective view showing an example of assembly of a conveyor device. [Figure 11] FIG. 10 is a perspective view showing a modified example of the conveyor device. [Figure 12] FIG. 10 is a schematic diagram showing a modified example of the frame structure. [Figure 13] FIG. 10 is a schematic diagram showing a modified example of the frame structure. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an embodiment in which the present invention is applied to a conveyor device.

[0017] [1. Conveyor device configuration and functional overview] (1.1 Structure and Function of Conveyor Device) First, the configuration and general functions of a conveyor device according to one embodiment of the present invention will be described with reference to FIGS.

[0018] FIG. 1 is a perspective view showing an example of a schematic configuration of a conveyor device according to an embodiment of the present invention.

[0019] As shown in Fig. 1, the conveyor device 1 includes a frame structure 10 that is extendable and contractible in the guide direction of support guide rails GR (up and down in the figure), and a sealed belt conveyor system 20 that conveys objects in the guide direction of the support guide rails GR. The objects to be conveyed include, for example, excavated earth and sand, mined ore, grains, cement powder, etc.

[0020] The frame structure 10 has a slide frame 11 slidably fixed to two vertically installed support guide rails GR, a separation frame 12 positioned away from the support guide rails GR, and a link mechanism formed of a plurality of links connecting the slide frame 11 and the separation frame 12.

[0021] The frame structure 10 is slidable relative to the support guide rails GR by the slide frames 11. When the slide frames 11 slide on the support guide rails GR and adjacent slide frames 11 move closer to each other, the frame structure 10 contracts, and when the adjacent slide frames 11 move away from each other, the frame structure 10 expands.

[0022] Here, the material of the support guide rails GR is, for example, metal such as general steel (general steel, stainless steel). The cross-sectional shape of the support guide rails GR is an H-shaped steel. The support guide rails GR are installed vertically on the device rack Rk, which serves as the base of the conveyor device 1.

[0023] The guide direction of the support guide rails GR is the up-down direction in the drawing. The frame direction, which is perpendicular to the guide direction of the support guide rails GR, is the left-right direction in the drawing. The frame direction is the long axis direction of the approximately rectangular slide frame 11 and separation frame 12 (the width direction of the frame structure 10 or the conveyor device 1).

[0024] The sealed belt conveyor system 20 has an outgoing conveyor belt 21, a returning conveyor belt 22, and return terminal pulleys 23, 24, etc. for the outgoing conveyor belt 21 and the returning conveyor belt 22. The outgoing conveyor belt 21 and the returning conveyor belt 22, etc. are attached to the frame structure 10.

[0025] The sealed belt conveyor system 20 supported by the frame structure 10 expands and contracts in the guide direction in accordance with the expansion and contraction of the frame structure 10. The sealed belt conveyor system 20 conveys the conveyed objects in a spiral shape up or down in the guide direction.

[0026] (1.2 Configuration and Function of Frame Structure 10) Next, the configuration and function of the frame structure 10 will be described with reference to the drawings.

[0027] Fig. 2 is a perspective view showing an example of a frame structure of the conveyor device of Fig. 1. Fig. 3 is a schematic view showing a part of the frame structure of Fig. 2. Fig. 4 is a perspective view showing an example of a contracted state of the frame structure of Fig. 2.

[0028] As shown in Figure 2, the frame structure 10 has a slide frame 11, a spacing frame 12, an outgoing belt installation link L1 for installing the outgoing conveyor belt 21 of the sealed belt conveyor system 20, a return belt installation link L2 for installing the return conveyor belt 22 of the sealed belt conveyor system 20, an outgoing opposing link L3 that faces the outgoing belt installation link L1 so as to hold the slide frame 11 and the spacing frame 12 from both ends, and a return opposing link L4 that faces the return belt installation link L2 so as to hold the slide frame 11 and the spacing frame 12 from both ends.

[0029] A plurality of slide frames 11 are slidably mounted on the support guide rails GR.

[0030] The spacing frame 12 is positioned in a spacing direction (forward in the drawing) perpendicular to the guide direction and frame direction from the support guide rail GR. Multiple spacing frames 12 are installed in the guide direction. If the number of spacing frames 12 is N, the number of slide frames 11 is N+1.

[0031] The outgoing belt installation link L1 is located above the return belt installation link L2 in the guide direction. The outgoing belt installation link L1 and the return belt installation link L2 are located on the right or left side of the frame structure 10 or the conveyor device 1, and connect the slide frame 11 and the separation frame 12.

[0032] The outgoing path opposing link L3 is located above the returning path opposing link L4 in the guide direction. The outgoing path opposing link L3 and the returning path opposing link L4 are located on the left or right side of the frame structure 10 or the conveyor device 1 so as to face the outgoing path belt installation link L1 and the returning path belt installation link L2 in the frame direction, and connect the slide frame 11 and the separation frame 12.

[0033] The forward belt installation link L1 and the return belt installation link L2 have their main bodies parallel to each other, forming a parallel link mechanism. That is, in the guide direction, the slide frame 11 and the separation frame 12 each have two joints, which connect with the forward belt installation link L1 and the return belt installation link L2 to form a parallel link mechanism.

[0034] The outward opposing link L3 and the return opposing link L4 have their main bodies parallel to each other, forming a parallel link mechanism. That is, in the guide direction, the slide frame 11 and the separation frame 12 each have two joints, which are connected to the outward opposing link L3 and the return opposing link L4, forming a parallel link mechanism.

[0035] 3, the slide frame 11 has two joints on each side in the frame direction, corresponding to the link axis Ax1 and the link axis Ax2. The separation frame 12 has two joints on each side in the frame direction, corresponding to the link axis Ax3 and the link axis Ax4. The line connecting the two joints of the slide frame 11 and the line connecting the two joints of the separation frame 12 are parallel to each other.

[0036] The parallel link mechanism of the outbound belt installation link L1 and the inbound belt installation link L2 and the parallel link mechanism of the outbound opposing link L3 and the inbound opposing link L4 are opposed to each other on the left and right sides in the frame direction, so that the slide frame 11, the separation frame 12, the outbound belt installation link L1, the inbound belt installation link L2, the outbound opposing link L3 and the inbound opposing first link L4 form a three-dimensional parallel link mechanism.

[0037] The slide frame 11 is an example of a first slide frame or a second slide frame located adjacent to the first slide frame. If a certain slide frame 11 is the first slide frame in the guide direction of the support guide rail GR (the up-down direction in the drawing), the second slide frame is the adjacent slide frame 11 located above or below the certain slide frame 11.

[0038] The outgoing belt installation link L1 that connects the slide frame 11 serving as the first slide frame to the separation frame 12 is an example of an outgoing belt installation first link. The outgoing belt installation link L1 that connects the slide frame 11 (second slide frame) located adjacent to this slide frame 11 above or below the separation frame 12 is an example of an outgoing belt installation second link.

[0039] The return belt installation link L2 below the outgoing belt installation link L1, which is the first link for installing the outgoing belt, is an example of a first link for installing the return belt, and connects the slide frame 11, which is the first slide frame, to the separation frame 12. The return belt installation link L2 below the outgoing belt installation link L1, which is the second link for installing the outgoing belt, is an example of a second link for installing the return belt, and connects the slide frame 11, which is the second slide frame, to the separation frame 12.

[0040] The outgoing belt installation link L1, which is the first link for installing the outgoing belt, and the outgoing opposing link L3, which faces the outgoing belt installation link L1 in the frame direction, are an example of an outgoing belt opposing first link. The outgoing belt installation link L1, which is the second link for installing the outgoing belt, and the outgoing opposing link L3, which faces the outgoing belt installation link L1 in the frame direction, are an example of an outgoing belt opposing second link.

[0041] The return belt installation link L2, which is the first link for return belt installation, and the return opposing link L4, which faces the return belt installation link L2 in the frame direction, are an example of a return opposing link. The return belt installation link L2, which is the second link for return belt installation, and the return opposing link L4, which faces the return belt installation link L2 in the frame direction, are an example of a return opposing link.

[0042] The first three-dimensional parallel link mechanism formed by the outgoing belt installation link L1, which is the first link for installing the outgoing belt, the outgoing opposing link L3, which is the outgoing opposing first link, the homeward belt installation link L2, which is the homeward belt installation first link, and the homeward opposing link L4, which is the homeward opposing first link, is an example of a first link mechanism that connects the slide frame 11 of the first slide frame and the separation frame 12. The outgoing belt installation link L1, the outgoing opposing link L3, the homeward belt installation link L2, and the homeward opposing link L4 are links that belong to the first link mechanism.

[0043] A second three-dimensional parallel link mechanism formed by an outgoing belt installation link L1, which is the second link for installing the outgoing belt, an outgoing opposing link L3, which is the second opposing link for installing the outgoing belt, a return belt installation link L2, which is the second link for installing the return belt, and a return opposing link L4, which is the second opposing link for installing the return belt, is an example of a second link mechanism that connects the slide frame 11 of the second slide frame and the separation frame 12. The outgoing belt installation link L1, the outgoing opposing link L3, the return belt installation link L2, and the return opposing link L4 are links that belong to the second link mechanism.

[0044] As shown in Figures 1 and 2, the frame structure 10 has N+1 slide frames 11 and N separation frames 12 lined up in the guide direction, and N basic frame structures stacked in the guide direction and connected by link shafts. The basic frame structure is composed of a first three-dimensional parallel link mechanism and a second three-dimensional parallel link mechanism adjacent to the first three-dimensional parallel link mechanism in the guide direction, connected to each other by link shafts. The value of N increases as the excavation depth increases.

[0045] Here, the basic frame structure is the case where N=1. In the basic frame structure, adjacent slide frames 11 in the guide direction are connected by links (L1, L2, L3, L4) of the first three-dimensional parallel link mechanism and links (L1, L2, L3, L4) of the second three-dimensional parallel link mechanism via separation frames 12. When adjacent slide frames 11 in the guide direction move away from each other on the support guide rails GR, the basic frame structure extends in the guide direction.

[0046] In the frame structure 10, the outgoing belt installation link L1 and the return belt installation link L2 form a double helix structure. The outgoing conveyor belt 21 and the return conveyor belt 22 also form a double helix structure so as to be shifted below these links. The outgoing opposing link L3 and the return opposing link L4 form a double helix structure opposite the outgoing belt installation link L1 and the return belt installation link L2 in the frame structure 10.

[0047] The frame structure 10 has an upper end frame 14 and a lower end frame 13 at the ends of the repeating basic frame structure. An end pulley 23 is mounted on the upper end frame 14. An end pulley 24 is mounted on the lower end frame 13.

[0048] Next, the slide frame 11 will be described in detail.

[0049] As shown in Figure 3, the slide frame 11 has a main body 11a, a connecting portion 11b that connects to the forward belt installation link L1, etc., and a slide portion 11c that can slide along the support guide rail GR. The dimensions of the slide frame 11 are approximately 1 m in the front-to-rear direction, 2.8 m in the width direction (frame direction), and 1.5 m in the up-down direction. The dimension in the front-to-rear direction mainly includes the dimension of the connecting portion 11b and the slide portion 11c.

[0050] The main body 11a is made of a material such as a metal (general steel, stainless steel, aluminum, etc.) such as general steel. To reduce the weight of the main body 11a, two square steel pipes extend parallel to each other in the frame direction and are fixed in the center by welding or the like to another square steel pipe in the guide direction. Both ends of the main body 11a are connected to and fixed to the connecting portion 11b and the sliding portion 11c. The thickness of the main body 11a is 0.1 mm.

[0051] Each connecting portion 11b on both sides of the slide frame 11 has a link shaft pin of a joint that corresponds to the link shaft Ax1 and the link shaft Ax2 when the frame structure 10 is assembled. The link shaft pin is inserted into a link shaft hole formed in the connecting portion 11b.

[0052] Each slide portion 11c on both sides of the slide frame 11 has two upper and lower guide wheels on the inside for sliding along the support guide rails GR. The slide portion 11c has a stopper (not shown) that prevents it from sliding along the support guide rails GR. When the stopper is released, the slide frame 11 becomes able to slide along the support guide rails GR. The slide frame 11 is slid a predetermined distance and then fixed to the support guide rails GR by the stopper. The stopper is attached by inserting two wedge-shaped guide wheel stoppers between the upper and lower guide wheels, so that they bite into the two upper and lower guide wheels on the inside of the slide portion 11c and the wheel running surface of the support guide rail, and fixing it to the support guide rail GR.

[0053] The connecting portion 11b and the sliding portion 11c are formed from square steel pipes and reinforced with battens. The connecting portion 11b and both ends of the main body 11a are reinforced with triangular battens on the connecting portion 11b side and fixed by welding or the like to form the slide frame 11. The dimensions of the connecting portion 11b and the sliding portion 11c are approximately 1 m in the front-to-back direction, 0.1 m in the width direction, and 1.5 m in the up-down direction.

[0054] 2 and 3, the link shaft pin of the joint of one connecting portion 11b is rotatably connected on the inside to the outgoing belt installation link L1 and the outgoing opposing link L3 via the link shaft pin and a cylindrical sliding bearing. The link hole of the other connecting portion 11b is rotatably connected on the outside to the return belt installation link L2 and the return opposing link L4 via the link shaft pin and a cylindrical sliding bearing. That is, the outgoing belt installation link L1 and the outgoing opposing link L3 are rotatably connected to the inside of the frame structure 10, and the return belt installation link L2 and the return opposing link L4 are rotatably connected to the outside of the frame structure 10, with the connecting portion 11b sandwiched between them.

[0055] In this way, the slide frame 11 has a slide portion 11c that can slide on the support guide rail GR and a connecting portion 11b that connects to a link belonging to the link mechanism, and the slide portion 11c protrudes toward the support guide rail GR at both ends in the frame direction, and the connecting portion 11b protrudes toward the opposite side of the support guide rail GR at both ends in the frame direction.

[0056] Next, the separation frame 12 will be described in detail.

[0057] The separation frame 12 has a main body 12a and a connecting portion 12b that connects to the forward belt installation link L1 etc. The dimensions of the separation frame 12 are approximately 0.5 m in the front-to-rear direction, 2.8 m in the width direction (frame direction), and 1.5 m in the up-down direction, which are almost the same as those of the slide frame 11. The separation frame 12 is made of a metal such as general steel (general steel, stainless steel, aluminum steel), for example.

[0058] To reduce weight, the main body 12a is made of two square steel pipes that extend parallel to the frame direction and are fixed in the center in the guide direction by welding, etc. Both ends of the main body 12a are connected to and fixed to the connecting parts 12b.

[0059] The connecting portion 12b is made of a square steel pipe and reinforced with battens. The connecting portion 12b and both ends of the main body 12a are fixed with triangular battens to form the isolation frame 12. The dimensions of the connecting portion 12b are approximately 0.5 m in the front-to-back direction, 0.1 m in the width direction, and 1.5 m in the up-to-down direction.

[0060] Each of the connecting portions 12b on both sides of the isolation frame 12 has a link shaft pin corresponding to the link shaft Ax3 and the link shaft Ax4. The link shaft pin is inserted into a link shaft hole formed in the connecting portion 12b.

[0061] 2 and 3, the link shaft pin of one connecting portion 12b is rotatably connected on the inside to the outgoing belt installation link L1 and the outgoing opposing link L3 via a link shaft and a cylindrical sliding bearing. The link shaft pin of the other connecting portion 12b is rotatably connected on the outside to the return belt installation link L2 and the return opposing link L4 via a link shaft and a cylindrical sliding bearing. That is, the outgoing belt installation link L1 and the outgoing opposing link L3 are rotatably connected to the inside of the frame structure 10, and the return belt installation link L2 and the return opposing link L4 are rotatably connected to the outside of the frame structure 10, with the connecting portion 12b sandwiched between them.

[0062] The separation frame 12 has a main body portion 12a that is shifted away from the support guide rail GR from the link axes Ax3 and Ax4 of the link holes of each connecting portion 12b on both sides.

[0063] Next, each link will be described in detail.

[0064] The forward belt installation link L1 is made of metal such as general steel (general steel, stainless steel, or aluminum steel). As shown in FIG. 3, the forward belt installation link L1 has connecting portions L1a at both ends of a straight rectangular prism body. The connecting portions L1a on both ends have link holes that correspond to the link axes Ax1 and Ax3 when the frame structure 10 is assembled. The connecting portions L1a protrude perpendicularly from the body of the forward belt installation link L1. In other words, the forward belt installation link L1 has a U-shape. The body of the forward belt installation link L1 is configured to be offset from a line connecting the centers of the link axes Ax1 and Ax3. The protruding length of the connecting portions L1a is a length that allows the forward conveyor belt 21 and pulley of the sealed belt conveyor system 20 to be positioned on a line connecting the centers of the link axes Ax1 and Ax3.

[0065] The outgoing belt installation link L1 also has a pulley installation portion for installing the outgoing belt drive pulley 25 and the outgoing belt pulley 27 so that they can rotate.

[0066] The dimensions of the outbound belt installation link L1 are a square steel pipe with a main body length of 5.6 m and a diameter of 0.1 m, and the protrusion of the connecting part L1a is 0.15 m. The distance between the centers of the link holes of the connecting parts L1a on both ends is 5.4 m.

[0067] The return belt installation link L2 is made of the same material and has the same dimensions as the outgoing belt installation link L1. The connecting portion L2a of the return belt installation link L2 is the same as the connecting portion L1a of the outgoing belt installation link L1. The main body of the return belt installation link L2 is configured to be offset from the line connecting the centers of the link axis Ax2 and the link axis Ax4. The protruding length of the connecting portion L1a is a length that allows the return conveyor belt 22 and pulley of the sealed belt conveyor system 20 to be positioned on the line connecting the centers of the link axis Ax2 and the link axis Ax4.

[0068] The return belt installation link L2 also has a pulley installation portion for rotatably installing the return belt drive pulley 26 and the return belt pulley 28.

[0069] In this way, the outgoing belt installation link L1 has a main body portion offset to one side in the guide direction from a line connecting the central link holes through which the link axes Ax1 and Ax3 of the connecting portions L1a on both ends pass, and the return belt installation link L2 has a main body portion offset to one side in the guide direction from a line connecting the central link holes through which the link axes Ax2 and Ax4 of the connecting portions L2a on both ends pass.

[0070] The outgoing link L3 is made of metal such as general steel (general steel, stainless steel, aluminum steel), etc. As shown in Fig. 3, the outgoing link L3 is a straight rectangular prism with link holes at both ends.

[0071] The outward link L3 is a square steel pipe with a dimension of 5.6 m and a diameter of 0.1 m. The distance between the centers of the link holes of the outward link L3 is 5.4 m.

[0072] The return link L4 is made of the same material and has the same dimensions as the outgoing link L3.

[0073] As shown in Figures 2 and 3, for example, across the connecting portion 12b of the separation frame 12, the outgoing belt installation link L1 belonging to the first link mechanism is on the right side, and the outgoing opposing link L3 belonging to the second link mechanism is on the left side. Across the connecting portion 12b of the separation frame 12, the homeward belt installation link L2 belonging to the first link mechanism is on the right side, and the homeward opposing link L4 belonging to the second link mechanism is on the left side. Across the connecting portion 12b of the separation frame 12, the outgoing opposing link L3 belonging to the first link mechanism is on the right side, and the outgoing belt installation link L1 belonging to the second link mechanism is on the left side. Across the connecting portion 12b of the separation frame 12, the homeward opposing link L4 belonging to the first link mechanism is on the right side, and the homeward belt installation link L2 belonging to the second link mechanism is on the left side.

[0074] Thus, the frame structure 10 is an example in which, in the frame direction, the links belonging to the first link mechanism are located on one side (e.g., the right side) and the links belonging to the second link mechanism are located on the other side (e.g., the left side).

[0075] In addition, the frame structure 10 is an example in which the first link for installing the outbound belt and the second opposite link for the outbound direction, the second link for installing the outbound belt and the first opposite link for the outbound direction, the first link for installing the return belt and the second opposite link for the return direction, and the second link for installing the return belt and the first opposite link for the return direction each share a link axis in the separation frame 12.

[0076] In addition, the frame structure 10 is an example in which the first link for installing the outbound belt, the second opposite link for the outbound belt, the second link for installing the outbound belt, and the first opposite link for the outbound belt share a first link axis Ax3 in the separation frame, and the first link for installing the return belt, the second opposite link for the return belt, the second link for installing the return belt, and the first opposite link for the return belt share a second link axis Ax4 in the separation frame.

[0077] 2, the return belt installation link L5 has a belt twisting portion 15 to which the transport guide member Cn can be attached so as to avoid contact with the twisted portion of the return conveyor belt 22 and to support the return conveyor belt 22 from the frame direction. This twisting is performed when the end pulley 23 of the upper end frame 14 or the end pulley 24 of the lower end frame 13 reverses the belt from the outward conveyor belt 21 to the return conveyor belt 22, so that the closed side of the sealed belt conveyor faces upward.

[0078] 2, in the return belt installation link L5, the connecting portion on the slide frame 11 side protrudes in a direction away from the outgoing belt installation link L1, and the connecting portion on the separation frame 12 side protrudes in a direction toward the outgoing belt installation link L1. In other words, the return belt installation link L5 has connecting portions on both ends that protrude in opposite directions, sandwiching the belt twisting portion 15 therebetween.

[0079] On the slide frame 11 side, a conveying guide member Cn is attached to the upper part of the main body of the return belt installation link L5. On the separation frame 12 side, a conveying guide member Cn is attached to the lower part of the main body of the return belt installation link L5. A conveying guide member Cn is attached laterally to the belt twisting portion 15 between the main bodies of the return belt installation link L5. The conveying guide member Cn supports the twisted return conveyor belt 22 from the frame direction.

[0080] The forward belt installation link of the upper end frame 14 has a connecting portion corresponding to the forward belt installation link L1. That is, this connecting portion protrudes in a direction approaching the return belt installation link of the upper end frame 14.

[0081] The return belt installation link of the upper end frame 14 has a connecting portion corresponding to the return belt installation link L5, i.e., this connecting portion protrudes away from the outgoing belt installation link of the upper end frame 14.

[0082] The outgoing belt installation link of the lower end frame 13 has a connecting portion corresponding to the outgoing belt installation link L1. In other words, this connecting portion protrudes in a direction approaching the return belt installation link of the lower end frame 13.

[0083] The return belt installation link of the lower end frame 13 has a connecting portion corresponding to the return belt installation link L5. That is, this connecting portion protrudes in a direction away from the outgoing belt installation link of the lower end frame 13.

[0084] As described above, the frame structure 10 is formed by a three-dimensional parallel link mechanism formed by the slide frame 11, the separation frame 12, the forward belt installation link L1, the return belt installation link L2, the forward opposing link L3, and the return opposing link L4, which are connected in a zigzag pattern alternately on the link axes Ax1, Ax2 and the link axes Ax3, Ax4. This allows the frame structure 10 to expand and contract in the guide direction. For example, as shown in FIG. 4, the frame structure 10 contracts in the guide direction. When contracted, the frame structure 10 has an overall width of 43 m, an overall length of 76 m, and an overall height of approximately 9 m.

[0085] (1.3 Configuration and Function of the Enclosed Belt Conveyor System 20) Next, the configuration and function of the sealed belt conveyor system 20 will be described with reference to the drawings.

[0086] Fig. 5 is a perspective view showing an example of the sealed belt conveyor system 20 of the conveyor device 1 of Fig. 1. Fig. 5 is a structural explanatory diagram showing a combination of the frame structure 10 and the sealed belt conveyor system 20.

[0087] As shown in Figure 5, the sealed belt conveyor system 20 includes an outgoing conveyor belt 21, a returning conveyor belt 22, return terminal pulleys 23 and 24 for the outgoing conveyor belt 21 and the returning conveyor belt 22, an outgoing belt drive pulley 25 for driving the outgoing conveyor belt 21, a returning belt drive pulley 26 for driving the returning conveyor belt 22, an outgoing belt pulley 27 for changing the traveling direction of the outgoing conveyor belt 21, and a returning belt pulley 28 for changing the traveling direction of the returning conveyor belt 22. The outgoing conveyor belt 21 and the returning conveyor belt 22 are sealed conveyor belts that are folded in half in the width direction to enclose the conveyed object. The edges where both ends of the folded sealed conveyor belt meet in the width direction are supported by a conveyance guide member Cn.

[0088] The outgoing conveyor belt 21 and the returning conveyor belt 22 are a single endless conveyor belt that turns back at end pulleys 23 and 24.

[0089] The material of the outgoing conveyor belt 21 and the returning conveyor belt 22 is rubber. The pulley diameter of the outgoing belt drive pulley 25, the returning belt drive pulley 26, the outgoing belt pulley 27, and the returning belt pulley 28 is 0.8 [m]. The belt width of the outgoing conveyor belt 21 and the returning conveyor belt 22 is 0.65 [m].

[0090] The outgoing conveyor belt 21 is folded in half in its width direction, and is bent in a spindle-shaped cross section. The conveyed object is sealed inside the folded outgoing conveyor belt 21. The upper edge of the folded outgoing conveyor belt 21 is supported by a plurality of conveying guide members Cn installed below the outgoing belt installation link L1.

[0091] The return conveyor belt 22 is folded in half in the width direction, and is bent in a spindle-like cross section. The upper edge of the folded return conveyor belt 22 is supported by a conveying guide member Cn installed below the return belt installation link L2.

[0092] The outgoing conveyor belt 21 and the returning conveyor belt 22 circulate in a spiral shape.

[0093] The end pulley 23 is rotatably mounted on the upper end frame 14. At the end pulley 23, the endless conveyor belt is divided at the top into an outgoing conveyor belt 21 and a returning conveyor belt 22.

[0094] The end pulley 24 is rotatably mounted on the lower end frame 13. At the end pulley 24, the endless conveyor belt is divided into an outgoing conveyor belt 21 and a returning conveyor belt 22 at the lower part.

[0095] The outward belt drive pulley 25 has a drive motor M. As shown in Fig. 6, the outward belt drive pulley 25 is installed at a pulley installation portion of the outward belt installation link L1 on the slide frame 11 side. More specifically, the drive motor M is fixed to the pulley installation portion of the outward belt installation link L1, and the main body of the outward belt drive pulley 25 is connected to the output shaft of the drive motor M.

[0096] The outbound belt drive pulley 25 drives the outbound conveyor belt 21 while changing its direction from the longitudinal direction of the outbound belt installation link L1 to the longitudinal direction of the slide frame 11, or from the longitudinal direction of the slide frame 11 to the longitudinal direction of the outbound belt installation link L1.

[0097] The return belt drive pulley 26 has a drive motor M. As shown in Fig. 6, the return belt drive pulley 26 is installed at a pulley installation portion of the return belt installation link L2 on the slide frame 11 side. More specifically, the drive motor M is fixed to the pulley installation portion of the return belt installation link L2, and the main body of the return belt drive pulley 26 is connected to the output shaft of the drive motor M.

[0098] The return belt drive pulley 26 drives the return conveyor belt 22 while changing its direction from the longitudinal direction of the return belt installation link L2 to the longitudinal direction (link axis direction) of the slide frame 11, or from the longitudinal direction of the slide frame 11 to the longitudinal direction of the return belt installation link L2.

[0099] The conveying direction can be changed by changing the rotation direction of the drive motor M for the forward belt drive pulley 25 and the return belt drive pulley 26. That is, the object to be conveyed can be conveyed spirally upward or downward in the guide direction.

[0100] As shown in FIG. 6, the outgoing belt pulley 27 is rotatably installed on the pulley installation portion of the outgoing belt installation link L1 on the separation frame 12 side.

[0101] The outbound belt pulley 27 changes the direction of the outbound conveyor belt 21 from the longitudinal direction of the outbound belt installation link L1 to the longitudinal direction (link axis direction) of the separation frame 12, or from the longitudinal direction of the separation frame 12 to the longitudinal direction of the outbound belt installation link L1.

[0102] As shown in FIG. 6, the return belt pulley 28 is rotatably installed on the pulley installation portion of the return belt installation link L2 on the separation frame 12 side.

[0103] The return belt pulley 28 changes the direction of the return conveyor belt 22 from the longitudinal direction of the return belt installation link L2 to the longitudinal direction of the separation frame 12, or from the longitudinal direction of the separation frame 12 to the longitudinal direction of the return belt installation link L2.

[0104] As shown in Figure 6, the sealed belt conveyor system 20 is connected to the frame structure 10 by a plurality of conveying guide members Cn installed along the main bodies of the forward belt installation link L1 and the return belt installation link L2, and by the pulley installation portion of the forward belt installation link L1 and the pulley installation portion of the return belt installation link L2.

[0105] The closed belt conveyor system 20 expands and contracts in the guide direction in accordance with the expansion and contraction of the frame structure 10.

[0106] As shown in Fig. 5, the upper edge of the outgoing conveyor belt 21, which has been folded in half, opens from the conveying guide member Cn attached facing downward to the outgoing belt installation link of the upper end frame 14, and reaches the terminal pulley 23. The opened outgoing conveyor belt 21 turns back at the terminal pulley 23 to become the return conveyor belt 22. The opened return conveyor belt 22 is folded in half downward, and closed by the conveying guide member Cn attached facing upward to the return belt installation link of the upper end frame 14.

[0107] The return conveyor belt 22, folded in half and closed downward, is twisted 90° from the conveying guide member Cn attached upward to the return belt installation link L5 to the conveying guide member Cn attached horizontally to the belt twisting portion 15 of the return belt installation link L5. The edge of the outgoing conveyor belt 21, folded in half, faces upward at the conveying guide member Cn attached downward to the return belt installation link L5. The same applies to the lower end frame 13 as to the upper end frame 14.

[0108] (1.4 Configuration and Function of Lifting Block) Next, there will be explained a lifting block that raises and lowers the slide frame 11. Fig. 7 is a perspective view showing an example of a lifting block that raises and lowers the slide frame 11.

[0109] As shown in FIG. 7, the lifting mechanism of the slide frame 11 includes an extension drive device Dr, a lifting block Bc, and pulleys P1 and P2.

[0110] The telescopic drive device Dr is attached to the device rack Rk. The telescopic drive device Dr winds up or rewinds the rope Rp.

[0111] The lifting block Bc has a movable pulley P2. The lifting block Bc is detachable from the slide frame 11.

[0112] The pulley P1 is rotatably fixed to the top of the support guide rail GR. The pulley P1 changes the direction of the rope Rp from the telescopic drive device Dr, and pulls up or down the lifting block Bc.

[0113] A lifting block Bc is connected and fixed to the slide frame 11 to be slid among the multiple slide frames 11 of the frame structure 10. After the lifting block Bc is connected and fixed, the slide frame 11 is raised and lowered on the support guide rails GR by the telescopic drive device Dr.

[0114] [2. Assembly of conveyor device 1] Next, the operation of assembling the conveyor device according to the embodiment of the present invention will be described with reference to the drawings.

[0115] FIG. 8 is a flowchart showing an example of the operation for assembling the conveyor device 1.

[0116] As shown in Fig. 8, the device rack Rk and the support guide rails GR are installed (step S1). As shown in Fig. 9, the device rack Rk is assembled as the base of the conveyor device 1, and two support guide rails GR for the first stage are fixed thereto.

[0117] Next, the main body of the conveyor device 1 is attached (step S2). As shown in Fig. 9, the frame structure 10 is assembled by sliding the slide frame 11 from the support guide rails GR and inserting it from above, and then the sealed belt conveyor system 20 is installed.

[0118] Next, the support guide rail GR is extended (step S3). The support guide rail GR is extended by adding a new one to suit the excavation site, as shown in Fig. 10. For example, the support guide rail GR is connected and fixed by joints and bolts to the back surface of the slide frame 11 where the wheels do not pass.

[0119] Next, the conveyor device 1 main body is extended and fixed (step S4). A lifting block Bc is attached and fixed to a predetermined slide frame 11 out of the N slide frames 11. The extension drive device Dr is operated to slide the slide frame 11 with the lifting block Bc attached upward in the guide direction by a predetermined distance on the support guide rail GR. At this time, the slide frames 11 above the slide frame 11 with the lifting block Bc attached also rise.

[0120] As shown in FIG. 10, the slide frame 11 to which the lift block Bc is attached after being moved a predetermined distance is fixed to the support guide rail GR.

[0121] A predetermined slide frame 11 is selected from the N slide frames 11, a lifting block Bc is attached, and the slide frame 11 is slid and fixed, and this process is repeated until the main body of the conveyor device 1 extends as shown in Figure 1. If the slide frame 11 is fixed to the support guide rail GR, it is released from the fixation and then slid.

[0122] When retracting, a predetermined slide frame 11 is selected from the N slide frames 11, the lifting block Bc is attached, the predetermined slide frame 11 is released from the support guide rail GR, the telescopic drive device Dr is operated, and the slide frame 11 is slid and lowered. The conveyor device 1 main body is retracted by repeating the process of selecting a predetermined slide frame 11 from the N slide frames 11, attaching the lifting block Bc, releasing the lock, and sliding and fixing the slide frame 11.

[0123] As described above, according to the conveyor device 1 of the embodiment, the frame structure 10 has two three-dimensional parallel link mechanisms formed from the first and second slide frames 11 slidably fixed to the support guide rails GR, the separation frame 12 located away from the support guide rails, the outgoing belt installation link L1 for installing the outgoing conveyor belt 21 to connect the first slide frame 11 and the separation frame 12, the outgoing opposing link L3 facing the outgoing belt installation link L1 in the frame direction perpendicular to the guide direction of the support guide rails Gr, the return belt installation link L2 for installing the return conveyor belt 22, and the return opposing link L4 facing the return belt installation link L2 in the frame direction.By changing the distance between adjacent slide frames 11 and expanding and contracting in the guide direction, a width correction unit that slides and moves is not required, and the device can be made simpler and more compact.

[0124] Furthermore, since the frame structure 10 is structured to support the separation frame 12 by two three-dimensional parallel link mechanisms adjacent to each other in the guide direction, rigidity is increased, shaking due to external forces is reduced, and the conveyor device 1 is stable even when extended.

[0125] The first link for installing the outbound belt (e.g., the upper outbound belt installation link L1), the second opposing link for installing the outbound belt (e.g., the lower outbound belt installation link L3), the second link for installing the outbound belt (e.g., the lower outbound belt installation link L1), and the outbound opposing link L3 (e.g., the upper outbound link L3) share the first link axis Ax3 in the separation frame 12, and the first link for installing the return belt (e.g., the upper return belt installation link L2), the second opposing link for installing the return belt (e.g., the lower return belt installation link L4), the second link for installing the return belt (e.g., the lower return belt installation link L2), and the first opposing link for installing the return belt (e.g., the upper return link L4) share the second link axis Ax4 in the separation frame 12, so that the link axis is common on the left and right, which makes it easy to manufacture and reduces load when the frame structure 10 expands and contracts, allowing for smooth expansion and contraction.

[0126] Furthermore, in the frame direction parallel to the link axis, when the links belonging to the first link mechanism (upper outbound belt installation link L1, upper return belt installation link L2, upper outbound opposing link L3, upper return opposing link L4) are located on one side (for example, the left side) and the links belonging to the second link mechanism (lower outbound belt installation link L1, lower return belt installation link L2, lower outbound opposing link L3, lower return opposing link L4) are located on the other side (for example, the right side), the multiple links belonging to the first link mechanism and the multiple links belonging to the second link mechanism are shifted left and right, making it easier to fold when the frame structure 10 is contracted.

[0127] Furthermore, when the outbound belt installation link L1 (return belt installation link L2) has a main body portion that is shifted to one side in the guide direction from the line connecting the centers through which the link axes of the connecting portions L1a (L2a) at both ends pass, it becomes, for example, a U-shape that is shifted upward in the guide direction, and the outbound conveyor belt or the return conveyor belt can be installed and stored below the main body of the outbound belt installation link L1, and when the frame structure 10 expands or contracts, the frame structure can be folded compactly without adversely affecting the conveying operation of the conveyor belt.

[0128] Furthermore, if the separation frame 12 has a main body portion 12a that is shifted away from the link axes Ax3 and Ax4 and away from the support guide rail Gr, it becomes easier to store the outbound belt pulley 27 and the inbound belt pulley 28 inside the frame structure 10.

[0129] Furthermore, if the slide frame 11 has a slide portion 11c that can slide on the support guide rail GR and a connecting portion 11b that connects to a link belonging to the link mechanism, and the slide portion 11c protrudes toward the support guide rail GR at both ends in the frame direction, and the connecting portion 11b protrudes opposite the support guide rail GR at both ends in the frame direction, the outbound belt drive pulley 25 and the inbound belt drive pulley 26 can be easily stored inside the frame structure 10 and can be made to slide on the support guide rail GR.

[0130] Furthermore, when the conveyor belt 21 for the outbound path and the conveyor belt 22 for the return path are hermetically sealed conveyor belts that are folded in half in the width direction to enclose the transported object, the edges where both ends of the folded hermetically sealed conveyor belt in the width direction meet are supported by the conveying guide member Cn, and the main body of the return path belt installation link L5 has a belt twisting portion 15 to which the conveying guide member Cn can be attached so that the twisted return path conveyor belt 22 can be supported from the frame direction, the return path conveyor belt 22 that has been folded in half in the width direction can be reversed along the return path belt installation link L5.

[0131] (Variation) Next, a modified example of the conveyor device will be described below: Fig. 11 is a perspective view showing a modified example of the conveyor device.

[0132] As shown in FIG. 11, the conveyor apparatus 2 may have support guide rails GR installed facing downward relative to the apparatus rack Rk. The frame structure 10 of the main body of the conveyor apparatus 2 and the sealed belt conveyor system 20 are extended downward along the support guide rails GR. The slide frame 11 to which the lifting block Bc is attached is released, and the slide frame 11 is gradually lowered by the extension drive device Dr. A specific slide frame 11 is selected from the N slide frames 11, and the lifting block Bc is attached. The slide frame 11 is then slid and fixed, and this process is repeated until the main body of the conveyor apparatus 2 extends as shown in FIG. 11.

[0133] Next, modified examples of the frame structure will be described with reference to the drawings. Figures 12 and 13 are schematic diagrams showing modified examples of the frame structure.

[0134] As shown in FIG. 12, the frame structure 10A may have a separation frame 12A whose length in the frame direction is different from that of the slide frame 11A. The connecting portion of the slide frame 11A faces inward, and the connecting portion of the separation frame 12A opens outward. Both ends of the outward belt installation link L1 and the outward opposing link L3 are rotatably connected to the connecting portion of the slide frame 11A and the connecting portion of the separation frame 12A. In this case, the link axes have different orientations on the left and right. Note that FIG. 12 is a schematic diagram of the frame structure 10A viewed from above. The length of the separation frame 12A may be longer than the length of the slide frame 11A.

[0135] The frame structure 10A is an example in which the first link for installing the outbound belt and the second opposite link for the outbound direction, the second link for installing the outbound belt and the first opposite link for the outbound direction, the first link for installing the return belt and the second opposite link for the return direction, and the second link for installing the return belt and the first opposite link for the return direction each share a link axis in the separation frame 12.

[0136] Furthermore, the frame structure 10A is an example in which the links belonging to the first link mechanism are located on one side (for example, the right side) and the links belonging to the second link mechanism are located on the other side (for example, the left side) in the frame direction. Note that the first link mechanism and the second link mechanism are omitted in Fig. 12.

[0137] 13, in the frame structure 10B, the connecting portions at both ends of the outgoing belt installation link L6 and the outgoing opposing link L7 may be angled with respect to the link bodies. The link holes of the connecting portions at both ends of the outgoing belt installation link L6 and the outgoing opposing link L7 are oriented along the link axis Ax1 and the link axis Ax3, respectively.

[0138] The frame structure 10B is an example in which the first link for installing the outbound belt and the second opposite link for the outbound direction, the second link for installing the outbound belt and the first opposite link for the outbound direction, the first link for installing the return belt and the second opposite link for the return direction, and the second link for installing the return belt and the first opposite link for the return direction each share a link axis in the separation frame 12.

[0139] In addition, frame structure 10B is an example in which the first link for installing the outbound belt, the second opposite link for the outbound belt, the second link for installing the outbound belt, and the first opposite link for the outbound belt share a first link axis Ax3 in the separation frame, and the first link for installing the return belt, the second opposite link for the return belt, the second link for installing the return belt, and the first opposite link for the return belt share a second link axis Ax4 in the separation frame.

[0140] Furthermore, the frame structure 10B is an example in which the links belonging to the first link mechanism are located on one side (for example, the right side) and the links belonging to the second link mechanism are located on the other side (for example, the left side) in the frame direction. Note that the first link mechanism and the second link mechanism are omitted in Fig. 13.

[0141] Furthermore, the present invention is not limited to the above-described embodiments. The above-described embodiments are merely examples, and any embodiment that has substantially the same configuration as the technical idea described in the claims of the present invention and exhibits similar effects is included within the technical scope of the present invention. [Explanation of symbols]

[0142] 1: Conveyor device 10: Frame structure 11: Slide frame (first slide frame, second slide frame) 12: Separate frame 20: Enclosed belt conveyor system 21: Conveyor belt for outbound travel 22: Return conveyor belt GR: Pillar guide rail L1, L6: Links for installing the outbound belt (first link for installing the outbound belt, second link for installing the outbound belt) L2: Link for installing the return belt (first link for installing the return belt, second link for installing the return belt) L3, L7: Opposing links (opposing first link, opposing second link) L4: Return opposite link (return opposite link 1, return opposite link 2)

Claims

1. A conveyor device comprising a frame structure slidable relative to support guide rails, and a forward conveyor belt and a return conveyor belt attached to the frame structure, The frame structure includes: a first slide frame slidably fixed to the support guide rail; a second slide frame slidably fixed to the support guide rail and positioned adjacent to the first slide frame; a spacing frame positioned away from the support guide rail; a first link mechanism connecting the first slide frame and the separation frame; a second link mechanism connecting the second slide frame and the separation frame; Equipped with the first link mechanism includes an outgoing belt installation first link for installing the outgoing conveyor belt, an outgoing opposing first link that faces the outgoing belt installation first link in a frame direction perpendicular to the guide direction of the support guide rail, a homeward belt installation first link for installing the homeward conveyor belt, and a homeward opposing first link that faces the homeward belt installation first link in the frame direction, the second link mechanism includes an outgoing belt installation second link for installing the outgoing conveyor belt, an outgoing opposing second link that faces the outgoing belt installation second link in the frame direction, a homeward belt installation second link for installing the homeward conveyor belt, and a homeward opposing second link that faces the homeward belt installation second link in the frame direction, the outgoing belt installation first link, the return belt installation first link, the outgoing opposing first link, and the return opposing first link form parallel link mechanisms together with the first slide frame and the separation frame, the outgoing belt installation second link, the return belt installation second link, and the outgoing opposing second link and the return opposing second link form parallel link mechanisms together with the second slide frame and the separation frame, a first link for installing the outgoing belt and the second opposite link for the outgoing direction, a second link for installing the outgoing belt and the first opposite link for the outgoing direction, a first link for installing the return belt and the second opposite link for the return direction, and a second link for installing the return belt and the first opposite link for the return direction, each of which has a common link axis in the separation frame.

2. 2. The conveyor device according to claim 1, the first link for installing the outgoing belt, the second opposing link for installing the outgoing belt, the second link for installing the outgoing belt, and the first opposing link for installing the outgoing belt share a first link shaft in the separation frame; a first link for installing the return belt, a second opposing link for installing the return belt, a second link for installing the return belt, and a first opposing link for installing the return belt, the second link for installing the return belt, and the first opposing link for installing the return belt, the second link shaft being shared by the separation frame;

3. The conveyor device according to claim 1 or 2, A conveyor apparatus, characterized in that, in the frame direction, the links belonging to the first link mechanism are located on one side and the links belonging to the second link mechanism are located on the other side.

4. The conveyor device according to claim 1 or 2, a first link for installing the outgoing belt, a second link for installing the outgoing belt, a first link for installing the return belt, and a second link for installing the return belt, each having a main body portion that is shifted to one side in the guide direction from a line connecting the centers through which the link axes of the connecting portions at both ends pass.

5. 5. The conveyor device according to claim 4, A conveyor device characterized in that the separation frame has a main body portion shifted away from the link shaft and away from the support guide rail.

6. 6. The conveyor device according to claim 5, the first slide frame and the second slide frame each have a slide portion slidable on the support guide rail and a connecting portion connected to a link belonging to the first link mechanism, The slide portion protrudes toward the support guide rail at both ends in the frame direction, A conveyor device characterized in that the connecting portion protrudes on both ends in the frame direction to the opposite side from the support guide rail.

7. The conveyor device according to claim 1 or 2, The outgoing conveyor belt and the returning conveyor belt are enclosed conveyor belts that are folded in half in the width direction to enclose the transported object, and the edges where both ends of the folded enclosed conveyor belt in the width direction meet are supported by a transport guide member, a main body of the first return belt installation link or the second return belt installation link having a belt twisting portion to which the conveying guide member can be attached so that the twisted return conveyor belt can be supported from the frame direction.

8. a first slide frame slidably fixed to the support guide rail; a second slide frame slidably fixed to the support guide rail and positioned adjacent to the first slide frame; a spacing frame positioned away from the support guide rail; a first link mechanism connecting the first slide frame and the separation frame; a second link mechanism connecting the second slide frame and the separation frame; Equipped with the first link mechanism includes an outgoing belt installation first link for installing an outgoing conveyor belt, an outgoing opposing first link that faces the outgoing belt installation first link in a frame direction perpendicular to the guide direction of the support guide rail, a homeward belt installation first link for installing a homeward conveyor belt, and a homeward opposing first link that faces the homeward belt installation first link in the frame direction, the second link mechanism includes an outgoing belt installation second link for installing the outgoing conveyor belt, an outgoing opposing second link that faces the outgoing belt installation second link in the frame direction, a homeward belt installation second link for installing the homeward conveyor belt, and a homeward opposing second link that faces the homeward belt installation second link in the frame direction, the outgoing belt installation first link, the return belt installation first link, the outgoing opposing first link, and the return opposing first link form parallel link mechanisms together with the first slide frame and the separation frame, the outgoing belt installation second link, the return belt installation second link, and the outgoing opposing second link and the return opposing second link form parallel link mechanisms together with the second slide frame and the separation frame, A frame structure characterized in that the first link for installing the outbound belt and the second opposite link for the outbound direction, the second link for installing the outbound belt and the first opposite link for the outbound direction, the first link for installing the return belt and the second opposite link for the return direction, and the second link for installing the return belt and the first opposite link for the return direction each share a link axis in the separation frame.

Images