JPH01192606A - Multi-stage telescopable conveyor - Google Patents

Abstract

PURPOSE:To increase telescope stroke and to stabilize carriage, in a conveyor for carrying bulk material while holding between belts, by providing a multi- stage telescopable frame, a fixed press section and a multi-stage moving press section. CONSTITUTION:A fixed press section 65 presses belts 1, 2 in holding section under shrinked state of a belt conveyor where first and second moving press sections 76, 84 are arranged respectively at chain guide section 68 and weight guide section 78. When the holding section is extended through extension of a first stage movable frame 60, a first stage link chain 72 enters into the holding section and the weight 74 is lifted. Consequently, a first stage moving press section 76 presses the belts 1, 2 through guidance of a guide frame 66. Similarly, when a second stage movable frame 61 is extended, second stage moving press section 84 presses the rear faces of the belts 1, 2. Consequently, carriage is stabilized and the stroke is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multi-stage telescopic belt conveyor that transports objects such as loose materials, powdery materials, and ready-mixed concrete by sandwiching them between a pair of belts.

[Conventional technology]

2. Description of the Related Art A belt conveyor is used as a conveyor suitable for conveying an object vertically or on a steep slope to positions of different heights, which conveys the object by sandwiching the object between a pair of belts. In such a conveyor, there may be cases where it is necessary to change the input position or discharge position of conveyed objects, and for this purpose, a fixed frame 12 and a movable frame 1 as shown in FIG.
4, two pairs of pulleys 28.30, 32.34 supported by a fixed frame and a movable frame, and an endless belt 24.26 that goes around each pair of pulleys and allows the movable frame to rise.
Vertical conveyor that is expandable and retractable with
No. 60707) has been proposed.

[Problem to be solved by the invention]

However, in the above-mentioned conveyor, the pair of roller brackets 38 and 40 for pressing the belts for holding and conveying the conveyed object between the pair of belts 24 and 26 have the negative side facing the fixed frame 1.
2. The other is fixed to the movable frame 14, and the pair of roller brackets 38 and 40 slide against each other as the belt conveyor expands and contracts, and the change in belt length due to expansion and contraction is absorbed by the movable pulley 48. Since it is a telescopic mechanism, when the belt conveyor is extended, there are parts S, , S, where the belt cannot be pressed at the upper and lower ends of the section where the conveyed object is to be held, and this part S
+, Sz tends to cause the transported object to slide back or spill over (there was a problem that the expansion and contraction stroke could not be made large).

This invention solves the above-mentioned problems, and even if the length of the section where the conveyed object is to be held changes as the belt conveyor expands and contracts, the pair of belts can always be properly connected over the entire section. It is an object of the present invention to provide a belt conveyor that can press and convey objects in a stable state and can have a large expansion and contraction stroke.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a belt conveyor that conveys objects by sandwiching them between a pair of belts.
A frame that expands and contracts in multiple stages, a fixed pressing section that has a pressing tool attached to a fixed support frame, and a multi-stage movable pressing section that has a pressing tool attached to a movable body that enters and exits the clamping section as each stage of the frame expands and contracts. , is equipped with.

[Effect]

In this belt conveyor, when the belt conveyor is in its most shortened state, the belt is pressed by the fixed pressing portion. When the belt conveyor is extended into multiple stages, the length of the clamping section increases with each extension of each stage, and the movable pressing section corresponding to each extension stage enters this clamping section, and this moving pressing section is different from the fixed pressing section. Press the parts of the belt that are not pressed. Therefore, even when the belt conveyor expands and contracts in multiple stages, the belt can always be appropriately pressed over the entire clamping section, the object to be transported can be stably clamped and conveyed, and a large expansion and contraction stroke can be obtained.

C Example] The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side view showing the overall structure of a belt conveyor equipped with a belt support device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. B-B in the diagram
4 is a sectional view taken along the line C--C in FIG. 1.

Here, the first belt 1 and the second belt 2 are a pair of endless belts, and the first belt 1 is the tail boob U3. Lower pulley 4. Upper pulley 5. Drive pulley 6, bend pulley 7, take-up pulley 8, bend pulley 9.10.
51, 52 are wound and stretched endlessly, and the second belt 2 is attached to the tail pulley 53. Lower pulley 4. Upper pulley 5° head pulley 54. Bend pulley55. Take-up pulley 56. It is wound around bend pulleys 57, 58, and 59 and stretched endlessly. These pair of belts 1 and 2 form a clamping section between the lower pulley 4 and the upper boo U5, and in this section, the conveyed object is clamped between the pair of belts 1 and 2, and the object is held in the upper or lower direction. Transport to.

The frame of this belt conveyor is the first stage movable frame 6
0, a second stage movable frame 61 and a fixed frame 62, and tail pulleys 3, 53 . Lower pulley 4. The bend pulleys 51, 52, 59 are attached to the first movable frame 60, and the bend pulleys 9, 10, 57, 58 are attached to the second stage movable frame 61.
, the upper pulley 5. A drive boob I76, a bend boob I77.55° take-up pulley 8.56, and a head pulley 54 are attached to a fixed frame 62, and a known moving device (not shown) such as a hydraulic cylinder or winch is attached to the fixed frame 62.
By moving the first stage movable frame 60 by the first stage stroke Ll and the second stage movable frame 61 by the second stage stroke L2, the length of the belt conveyor can be extended or contracted by the full stroke. In this embodiment, movable frames 60 and 61 are provided at the lower part, but the lower frame may be a fixed frame and the upper frame may be a movable frame.

Fixed support frames 63 extending in the belt running direction are fixedly installed on the left and right sides of the clamping section on the second stage movable frame 61, and rollers 64 are attached to the fixed support frames 63 at a predetermined pitch, and fixed pressing parts 65 are attached to the fixed support frames 63. It consists of On both sides of the clamping section of the first-stage movable frame 60, guide frames 66 are fixed in parallel to the front and back of the fixed support frame 63 (left and right in the figure), and a belt conveyor extends and contracts above the guide frame 66. At this time, a frame guide 67 is attached to contact the fixed support frame 63 so that the guide frame 66 moves along the fixed support frame 63. Further, the first stage movable frame 60 is provided with a chain guide 68 parallel to the guide frame 66 at the front and rear thereof, and a weight guide 69 on the outside thereof.
A rope sheep 70 is attached above the chain guide 68, and a sprocket 71 is attached below the chain guide 68. One end of a first stage link chain 72 is fixed to the lower end corner of the fixed support frame 63. This link chain 72 is wound around a sprocket 71, and a wire lobe is connected to the other end of this link chain 72. 73 is connected to a weight 74 around the rope sheep 70. Therefore, when the first stage movable frame 60 expands and contracts, the weight 74 moves along the weight guide 69, and the first stage link chain 72 moves into and out of the clamping section. A roller bracket 75 is attached to this link chain 72 with a predetermined pinch, and a roller 64 that presses the back surface of the belt 1.2 is attached to this roller bracket 75 to constitute a first stage moving pressing section 76.

Fixed support frames 63 are also provided on both sides of the clamping section of the fixed frame 62.
A guide frame 77 is fixed in parallel to the front and rear (left and right in the figure) of the guide frame 77. Weight guides 78 are provided at positions outside the second stage movable frame 61 before and after the guide frame 77. Sprockets 79 and 80 are attached above the weight guide 78 and the weight guide 78, respectively. Fixed support frame 6
3, one end of a second stage link chain 81 is fixed to the upper end corner of the sprocket 7.
9.80, and the other end of this link chain 81 is connected to a weight 82. Therefore, when the second stage movable frame 61 expands and contracts, the weight 82 moves along the weight guide 78, and the second stage link chain 81 moves into and out of the clamping section. A roller placket 83 is attached to the link chain 81 with a predetermined pinch, and a roller 64 for pressing the back surface of the belt 1.2 is attached to the roller placket 83 to constitute a second-stage moving pressing section 84.

In the shortened state of the belt conveyor, the fixed pressing part 65 presses the belt 1.2 in the clamping section, the first stage movable pressing part 76 is on the side of the cheno guide 68, and the second stage movable pressing part 8
4 is on the weight guide 78 side. When the first stage movable frame 60 expands, the clamping section becomes longer, and the first stage link chain 72 corresponding to the extension enters the clamping section by the rotation of the sprocket 71, and the weight 74 is pulled by the wire lobe 73 and rises. . In this state, the first stage movable pressing section 76 is also guided by the guide frame 66 and presses the back surfaces of the belts 1 and 2. When the second stage movable frame 61 expands, the clamping section becomes longer, and the second stage link chain 81 corresponding to the extension enters the clamping section by the rotation of the sprocket 79, 80, and the weight 82 moves the link chain 8
1 and rises. In this state, the second stage movable pressing section 84 is also guided by the guide frame 77 and presses the back surface of the belt 1.2.

When the second-stage movable frame 61 is shortened, the clamping section becomes shorter, and the second-stage link chain 81 corresponding to the shortened clamping section is pulled out from the clamping section toward the weight guide 78, and the weight 82 is moved toward the weight guide 78. descend along the When the first stage movable frame 60 is shortened, the clamping section becomes even shorter (the first stage link chain 72 corresponding to the shortened length is pulled out from the clamping section toward the chain guide 68, and the weight 74 is moved to the weight guide 69). Even if the conveyor expands and contracts in multiple stages in this way, the belts 1 and 2 over the entire clamping section are always pressed.

In this example, a roller is used as a pressing tool, but
Other pressing tools such as a presser plate can also be used in place of the rollers.

〔Effect of the invention〕

In the multi-stage telescopic belt conveyor of the present invention, even if the length of the clamping section changes as the belt conveyor expands and contracts, the movable pressing section moves into and out of the clamping section following the change, so that the length of the entire clamping section is always maintained. By appropriately pressing the belt, the conveyed object can be conveyed in a stable state without causing slip ink back or leakage, and it is possible to take a large expansion and contraction stroke.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a belt conveyor equipped with a belt support device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. -B sectional view, FIG. 4 is a sectional view taken along CC line in FIG. 1, and FIG. 5 is a diagram showing the configuration of a conventional telescopic vertical belt conveyor. In the figure, 1.2 is a belt, 60 is a first stage movable frame, 6
1 is a second stage movable frame, 62 is a fixed frame, 63 is a fixed support frame, 64 is a roller, 65 is a fixed pressing part, 72 is a first stage link chain, 76 is a first stage moving pressing part, 81 is a second stage A stage link chain 87 is a second stage moving pressing section. Patent applicant Furukawa Mining Co., Ltd. Agent Patent attorney Tetsuya Mori Agent Patent attorney Yoshiaki Naito Attorney Patent attorney Tadashi Shimizu Figure 5 S4

Claims (1)

[Claims] A belt conveyor that conveys an object by sandwiching it between a pair of belts includes a frame that expands and contracts in multiple stages, a fixed pressing part that has a pressing tool attached to a fixed support frame, and a clamping section that moves as each stage of the frame expands and contracts. A multi-stage telescopic belt conveyor characterized by comprising: a multi-stage movable pressing section in which a pressing tool is attached to a moving body that enters and exits the conveyor.