KR0158445B1 - Belt unloader - Google Patents

Abstract

In a belt-type unloader having two paddle feeders arranged in the lower part of a vertical frame supporting a double belt conveyor, and scavenging screws having an axis extending adjacently below the paddle feed axis, both paddles The hydraulic motor is directly connected to shaft ends located in the mutually opposite directions of the blower shafts, and the shaft ends of the opposite side and the shaft ends of the scavenging screws are geared, and the hydraulic motor is positioned axially inward of the gear connecting portion. Compacted unloader. In addition, in the unloader, the capacity adjusting gate partially covering the paddle outer periphery of the paddle feeder is rotatably supported at the bottom of the vertical frame so that the capacity adjusting gate can be properly rotated so that the amount of conveyance of the unloader can be adjusted. It was.

Description

Belt unloader

1 is a cross-sectional plan view of a belt unloader paddle driving device according to an embodiment of the present invention cut almost horizontally along the line II of FIG.

FIG. 2 is a front view of the paddle drive unit viewed from arrow II in FIG.

3 is a side view of the capability adjusting mechanism viewed from the arrow III in FIG.

4 is a side view of FIG. 2 with the capability adjustment mechanism removed.

5 is a partial enlarged side view taken along line V-V of FIG.

6 is a cross-sectional view showing an example of the capacity adjusting gate.

7 is a schematic side cross-sectional view of another embodiment of the capability adjusting mechanism of the present invention.

FIG. 8 is a partial cross sectional view taken along line VII-VII of FIG.

9 is a front view of the lower end of the belt type unloader according to another embodiment of the present invention.

10 is a schematic overall view of a conventional belt unloader.

11 and 12 are enlarged front and side views, respectively, of a paddle driving device of a conventional belt unloader.

* Explanation of symbols for main parts of the drawings

1: driving cart 2: boom

3: vertical frame 4: conveyor

5: paddle feeder 6: paddle shaft

7: paddle 8: electric motor

9: chain 10: sprocket

11: chain cover 12: cargo

13: suit 14: ground conveyor

15 Bracket 16, 17 Paddle shaft

18,19: paddle 20: paddle wing

12: screw shaft 24, 25: hydraulic motor

26: fixed frame 27, 28: gear train

29: gates 31, 22; 43, 44: capacity adjustment gate

33: bracket 35,36: link

37: Rod cylinder 42: Belt scale

The present invention relates to a belt-type unloader for placing and unloading a paddle feeder at a lower portion of a vertical double belt conveyor that oscillates and inserting the paddle feeder into a handle such as grain in a dock.

Granules, powders, etc., from the dock As a continuous unloader for loading and unloading a load, a double-belt conveyor that is unfolded into a dock at a distal end of a boom that is fitted with a swing frame on a conventional traveling truck (moving truck) is suspended, Belt-type unloaders with a centrifugal radial fan sowing machine called paddle feeders are known (for example, Patent Publication No. 54-25078, Utility Model Publication No. 62-74610).

10 is an overall schematic view of a belt type unloader of the above kind. A boom 2 capable of ups and downs and pivots is installed on the running cart 1, and a vertical frame 3 at the tip of the boom 2 swings in a vertical plane including the boom (swing motion in the direction of arrow D). To hang. In the vertical frame 3, a double belt conveyor 4 in which a pair of non-woven belts is overlapped is arranged, and a pair of paddle feeders 5 are arranged at the lower end of the double belt conveyor 4. As enlarged in FIGS. 11 and 12, the paddle shaft 6 extends from both ends of the paddle 7 to the side end of the vertical frame 3 and is supported by the bearing portion of the frame 3, In addition, the motor 8 and the reducer are installed outside the vertical frame 3 so that the paddle shaft 6 is rotated by the motor 8 through the chain 9, the sprocket 10, and the reducer. The electric motor 8 is covered by a cover, the chain 9 and the sprocket 10 are also covered by the chain cover 11, and the drive source and the electric mechanism part have a structure which protrudes outside the vertical frame 3.

Then, the lower end of the vertical frame 3 is inserted into the load 12 accommodated in the dock, and the load 12 is suspended toward the double belt conveyor 4 by rotating the paddle feeder 5 and between the belts. And conveyed upwardly and conveyed horizontally along the boom 2 so as to be received by the ground conveyor 14 from the chute 13 at the boom base.

In the conventional belt type unloader described above, the paddle drive device uses the electric motor 8 as a driving source, and drives the paddle shaft 6 by inserting the reducer, the sprocket 10, and the chain 9 from the electric motor 8. As a result, the motor 8 is greatly pushed in the lateral direction, and at the same time, the portion of the electric mechanism from the speed reducer to the paddle 7 becomes large, and the risk of contacting the hatch of the dock or the scavenging bladder when the floor is scratched during operation. There is a problem that can not widen the range of unloading work.

Moreover, in the conventional structure, the paddle shaft 6 and the electric motor 8 are not on the same axis line, and as shown in FIG. 12, the sprocket 10 at the shaft end of the paddle shaft 6 is located on the side of the vertical frame 3. The large space portion s is formed in the seam from the paddle end portion 7a to the shaft end of the paddle shaft 6, so that only the paddle shaft 6 penetrates the portion. It was. As described above, in the conventional apparatus, the overall formation including the vertical frame 3 becomes larger than the size of the paddle itself, so that the unloading operation efficiency is poor in a small dock. In addition, in the conveyance work of the cargo, it may be related to the back facilities after a ground conveyor, and the paddle conveyer conveyance capability may need to be adjusted. In such a case, conventionally, the conveying amount is adjusted by varying the belt speed of the double belt conveyor 4 or by changing the paddle rotation speed of the paddle conveyer 5. In such cases, the amount of conveyance must be extensively adjusted according to the situation.

However, even if the belt speed is increased or decreased as in the prior art, since the conveyed amount is determined by the amount of suspension (suspended amount) from the belt conveyer 5, the effective capacity cannot be adjusted by the belt speed alone. It was impossible to adjust the ability, and only fine adjustment was possible. In addition, even if the load is the same, it is necessary to adjust the carrying capacity at each time according to the difference in the volume specific gravity, but it is difficult to freely adjust remotely by the conventional method, and if this is to be done, the paddle driving mechanism and the belt driving mechanism are complicated. There was a problem of becoming large.

In the present invention, a hydraulic motor is used as a paddle member, and this can be directly connected to the paddle shaft, thereby eliminating the projection from the side of the vertical frame, and further compacting the overall structure even if a paddle screw is fitted. Another object is to provide a belt-type unloader capable of adjusting a wide range of capabilities in a simple structure without increasing the overall shape, and also capable of freely and freely adjusting the conveying amount by remote operation. .

In one aspect of the present invention, in order to achieve the above object, in the belt-type unloader, the double belt conveyor is swingably hung, and a paddle feeder is installed at a lower portion of the vertical frame supporting the belt conveyor. Two built-in paddle shafts are installed in parallel, and a scavenging screw shaft is installed at a position below the adjacent paddle shaft in parallel with the paddle shaft, and the hydraulic motor is directly positioned at one end of each paddle feeder on the axial opposite side. In addition, the other shaft end and the shaft end of the said scavenging screw are gear-connected, respectively, and the said hydraulic motor is located in the axial direction inside than the gear connection part of the said scavenging screw shaft end, and also in another form of this invention The double belt conveyor is slidably suspended, and the paddle is placed under the vertical frame supporting the belt conveyor. A belt type unloader provided with a machine, comprising: a fixed cover installed under the vertical frame and partially covering the outer part of the paddle; It is to have a drive mechanism.

In a preferred embodiment, a plurality of said capacity adjustment gates may be provided concentrically so that they can overlap each other with respect to a paddle.

In addition, the drive mechanism for rotating the capacity adjustment gate supports both rod cylinders in the vertical frame slightly above the lower end of the double belt conveyor, and at the same time connect the capacity adjustment gate and the vertical frame by two links, the both rods The front end of each cylinder and the connecting portion of the two links are configured to connect by wire or directly connect the vertical frame and the capacity adjusting gate to the cylinder.

Next, embodiments of the present invention will be described with reference to the drawings.

1, 2, and 4, a pair of paddle shafts 16, 17 on a bracket 15 extending downward from the bottom of the vertical frame 3 supporting the double belt conveyor 4; ) Are supported parallel to each other, and paddles 18 and 19 are adjacently fixed to each paddle shaft 16 and 17. The paddles 18 and 19 are provided with paddle wings 20 and partition plates 21 at their trunk parts. In addition, the vertical frame 3 is supported by a scavenging screw shaft 22 which extends in parallel with the paddle shafts 16 and 17 at positions below the pair of paddles 18 and 19.

The screw blade 23 of the scavenging screw shaft 22 is provided between the vertical frame 3 on both sides of the screw shaft 22 and the ends of the paddles 18 and 19, and rotates in one direction of the screw shaft 22. As a result, the wing angle is determined so that the load on the outer periphery is sent to the central axis, that is, the paddle. The axis of the other paddle shaft 17 of the diagonal direction axis (viewed from FIG. 1) in plan view with respect to one shaft end portion 16a of one paddle shaft 16 and one shaft end portion 16a of the one paddle shaft 16. Hydraulic motors 24 and 25 are connected to the end 17a, respectively, so that both paddles 18 and 19 face each other in such a way as to lift the surrounding loads and suspend them between the upper double belt conveyors 4. Rotate to drive.

In addition, the hydraulic motors 24 and 25 are supported on a fixed frame 26 which also serves as a dustproof cover unfolded downward from the vertical frame 3, and each hydraulic motor 24 as shown in Figs. 25 is close to each paddle 18, 19, so that the rear end of each hydraulic motor 24, 25 is approximately in the same vertical plane as the outer portion 3a, 3b (FIG. 4) of the vertical frame 3. .

Both end portions of the shaft ends 16b and 17b opposite the hydraulic motors 24 and 25 of the paddle shafts 16 and 17 and the scavenging screw shafts 22 are located at the outer portions 3a and 3b of the vertical frame 3. Spreads close together and between their ends is connected via gear trains 27 and 28, respectively, by means of both hydraulic motors 24 and 25 via paddle shafts 16 and 17 and gear trains 27 and 28, respectively. The shaft 22 is rotated. In this way, one of the scavenging screw shafts 22 is driven by the hydraulic motors 24 and 25 from both ends thereof. In this case, however, the paddle shafts 16 and 17 are rotated in opposite directions to each other. One of (27, 28) has an odd number of intermediate gears relative to the other. 29 is a gate of these gear trains 27 and 28, and serves as the bearing of the screw shaft 22. As shown in FIG.

In addition, if necessary, the shaft end of the scavenging screw shaft 22 may be extended outward from the gear connecting portion, and a rotary excavator blade or an awl screw may be provided in front of it.

In the unloading operation, the tip of the vertical frame 3 is first inserted into the loaded cargo by about 1 m, and the paddles 18 and 19 and the scavenging screw blades 23 are driven by the hydraulic motors 24 and 25. Rotate, send the peripheral load 12 to the paddles 18 and 19 by the scavenging screw blade 23, and rock the vertical frame 3 to double the upper belt with the load on the circumferential side of the paddle. Send it to the conveyor (4).

Since the paddle shafts 16 and 17 and the scavenging screw shaft 22 are mechanically moved through the gear trains 27 and 28, the load torques acting on the two hydraulic motors 24 and 25 are equalized, It is possible to compact and improve the area efficiency.

Next, the capability adjusting device will be described.

Referring to FIG. 3, a fixing cover 30 partially covering the upper portions of the paddles 18 and 19 fixed to the paddle shafts from both ends to the periphery is provided at the lower end of the vertical frame 3, and will be described later. A pair of capacity adjustment gates 31 and 32 are supported at the bottom of the vertical frame 3 so as to be able to rotate around the axis of each paddle shaft 16 and 17.

6 is a cross-sectional view of the capability adjusting gate 32. 5 and 6, the capacity adjusting gate 32 has an almost fan-shaped end plate 32a at both ends, and the outer circumference of the end plate 32a is integrally formed by an arc plate 32b. The boss portion 32c, to which the paddle shaft 17 is loosely fitted, is fixed to the base surface of each end plate 32a. As shown in FIG. 5, the outer circumference of the boss portion 32c is supported by the bracket 33 unfolded at the lower end of the vertical frame 3, and in this state, both end plates 32a are formed at both ends of the paddle 19, Further, the arc plate 32b partially covers the outer circumference of the paddle 19, respectively.

The boss part 32c which protrudes in the radial direction is formed in one boss part 32c, and the said projection part 34 is connected by inserting two links 35 and 36 in the lower end of the vertical frame 3 (the See also 3).

Both rod cylinders 37 are supported by the vertical frame 3 at a position slightly higher than the lower end of the double belt conveyor 4 as a drive mechanism for rotating the capacity adjusting gates 31 and 32. The front end portions of both rods 37a and 37b of both rod cylinders 37 are connected to a connection portion 39 connecting the links 35 and 36 via a plurality of rope wheels 38 supported by the vertical frame 3. It is connected by wires 40 and 41.

The above is the description of one gate 32 of the pair of capacity adjusting gates 31 and 32, but the other gate 31 is similarly linked to the vertical frame 3 in the boss portion on the opposite side thereof. At the same time, the link is wired to both other rod cylinders (not shown).

As a force is applied to both rod cylinders 37, one rod 37a contracts, and the other rod 37b extends, thereby linking 35 through wires 40 and 41 spreading at each rod end. The connection part 39 connecting 36 is rotated, and the capacity adjusting gate 32 is rotated around the paddle shaft 17 via the link 35 on the boss connection side. The direction of movement of both rods 37a and 37b is changed by the direction change by applying the force of both rod cylinders 37, and the capacity adjustment gate 32 rotates in the reverse direction. In this case, the exposed (opening) area of the paddle 19 with the capacity adjustment gate 32 rotating in the direction overlapping the fixed cover 30 with respect to the load 12 increases, and the load carrying capacity increases.

On the contrary, when the capacity adjusting gate 32 rotates away from the fixed cover 30, the covering area of the paddle 19 increases, thereby reducing the carrying capacity. Both rod cylinders 37 are driven by remote operation from the ground, and as shown in FIG. 10, the belt-style 42 mounted on the boom measures the carrying capacity at the horizontal running portion of the double belt conveyor, thereby providing a paddle ( The amount of the handling material (load 12) flowing into the 19 can be freely adjusted. In addition, as a safety measure, the vertical frame 3 is provided with a limit switch for detecting the limit of each rod of both rod cylinders 37.

7 and 8 show another embodiment of the capability adjusting device of the present invention. In this embodiment, for each paddle 18, 19, two capacity adjusting gates 43, 44 are provided concentrically so that they can overlap each other. At the base of the inner capacity adjusting gate 43, a boss portion 43c is formed, which is connected to the gate driving link mechanism as described in FIGS. 5 and 6, and at one edge of the circumferential direction of the circular plate of the outer circumference. As shown in FIG. 8, the locking protrusion 43a protruding outward is formed.

The outer capacity adjusting gate 44 has its base 44c rotatably supported on the boss portion 43c of the capacity adjusting gate 43, and the inner capacity adjusting gate has a circumferential lower edge of the circular plate of the outer circumference. A hook-shaped locking protrusion 44a is formed to engage with the locking protrusion 43a of the gate 43, and at the circumferential upper edge thereof, the locking pieces 45 and 46 formed at both edges of the fixing cover 30 and A T-shaped locking protrusion 44b that is engageable with the locking protrusion 43a of the inner capacity adjusting gate 43 is formed.

When the inner capacity adjusting gate 43 is maximally rotated in the direction of arrow A in the state shown in FIG. 8 by the above-mentioned both rod cylinders 37, the inner and outer capacity adjusting gate 43 as shown by the virtual line in the same figure. And 44 are received together into the fixed cover 30 to maximize the carrying capacity. When the inner capacity adjusting gate 43 rotates in the direction indicated by the arrow B in the maximum state of the capacity, the locking projection 43a of the capacity adjusting gate 43 is a hook-shaped hook of the edge below the outer capacity adjusting gate 44. Only the inner capacity adjusting gate 43 rotates until it engages with the machine 44a, and the range capacity adjustment is performed. After the locking projections 43a and 44a on both sides are engaged, the outer capacity adjusting gate 44 It is taken out by the inner capacity adjusting gate 43 and at the point when the T-shaped locking projection 44b on the outer capacity adjusting gate 44 is engaged with the locking piece 45 on the lower edge of the fixing cover 30. Conveyance capacity. In this embodiment, a wider range of capability adjustment is possible than in the case of FIG. 3, FIG. 5, and FIG.

7 and 8, paddles are omitted for clarity.

9 is a front view showing another embodiment of the capacity adjusting apparatus of the present invention. In the case of FIG. 9, the hydraulic pressure is directly connected between the lower end of the vertical frame 3 and the protrusion 34 of the boss portion 32c of the capacity adjusting gate 32 without inserting a link mechanism to drive the capacity adjusting gate 32. The cylinder 47 is mounted.

In this embodiment, the structure is simple and the operation is sure, but since the hydraulic cylinder 47 is buried in the handling during the unloading operation, it is necessary to perform dustproof measures such as mounting a corrugated cover between the cylinder rod and the cylinder. have.

As described above, according to the present invention, the hydraulic motor serving as the driving source for the paddle rotation is directly connected to the paddle shaft, and the other end of each paddle shaft is geared to the desired screw shaft for movement. It can be accommodated compactly, and also has a dustproof function, and the lower part of the vertical frame is compacted as a whole, so that the unloading work range can be expanded, and the unloading capacity can be improved.

In addition, a gate plate that enters and exits from the paddle outer periphery of the paddle is provided so that the exposed area of the paddle is changed, thereby making fine adjustment of the carrying capacity, as well as indentation and handling of the paddle portion. According to the water situation, the capacity can be adjusted quickly and appropriately during the unloading operation to stabilize the inflow to the paddle. Also, the extensive capacity adjustment can be performed reliably and remotely by changing the rear line. It works.

In the case where a plurality of capacity adjustment gates are concentrically installed so as to overlap each other with respect to the paddle, a wider range of capacity adjustment is possible than the capacity adjustment gate of one piece. In addition, by installing both rod cylinders for rotating the capacity adjusting gate at a position slightly above the lower end of the double belt conveyor and separating both rod cylinders from the scraped portion of the load, both load cylinders can be prevented from colliding with the load. have.

In addition, in order to operate the capacity adjusting gate directly with a cylinder, the structure of the drive mechanism for rotating the capacity adjusting gate is simplified, thereby reducing the equipment cost.

Claims (5)

A belt-type unloader in which a double belt conveyor is slidably suspended and a paddle feeder is installed at a lower portion of a vertical frame supporting the belt conveyor, wherein two paddle shafts in which paddles are fixed are installed in parallel, and adjacent portions of the paddle shafts are provided. At the lower position, a scavenging screw shaft extending parallel to the paddle shaft is installed, and a hydraulic motor is directly connected to one shaft end of each paddle feeder so as to be located opposite to each other, and the other shaft end and the scavenging screw shaft end The gear-type unloader characterized in that the gear hydraulic motor is positioned in the axial direction from the gear connecting portion of the scavenged screw shaft end. A belt type unloader in which a double belt conveyor is slidably suspended and a paddle feeder is installed at a lower part of a vertical frame supporting the belt conveyor, the belt unloader being provided at a lower part of the vertical frame and partially covering the outer part of the paddle; And a capacity adjusting gate rotatably supported under the vertical frame and partially covering the outer periphery of the paddle and a drive mechanism for rotating the capacity adjusting gate. 3. The belt unloader according to claim 2, wherein a plurality of said capacity adjusting gates are provided concentrically so that they can overlap each other with respect to the paddle. 4. The drive mechanism for rotating the capacity adjusting gate according to claim 2 or 3, wherein both rod cylinders are supported on a vertical frame slightly above the bottom of the double belt conveyor, and the capacity adjusting gate and the vertical frame are connected by two links. And a connecting portion of each of the two rod cylinders and a connecting portion of the two links by a wire. 4. A belt type unloader according to claim 2 or 3, wherein a vertical mechanism and a capacity adjusting gate are directly connected by a cylinder as a drive mechanism for rotating the capacity adjusting gate.