JP3248541B2 - Storage hopper gate device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate device for a storage hopper, and more particularly to a gate device for a storage hopper that can open a gate member with a minimum rotation and reduce the opening space of the gate.

[0002]

2. Description of the Related Art A storage hopper is provided with an inlet at an upper portion and an outlet at a lower portion, and a gate for closing the outlet is provided to temporarily store, for example, grains, gravel, metal scraps, and the like. The gate is opened and discharged to the lower truck bed or the like as necessary. Therefore, although the gate device is changed according to the intended use of the hopper, cut-off gates,
Cone gates, flap gates, vertical gates and the like are known.

A cut-off gate is suitable for a hopper having a small discharge port as shown in FIG. 6A, but a gate 17 for a hopper requiring a large discharge port as shown in FIG. 6B. And the opening / closing stroke becomes long. In a double cut-off gate that opens and closes the gate 27 left and right as shown in FIG.
Gears and link mechanisms are separately required to synchronize the left and right gates, which is a large-scale device. In addition, since the weight of the storage material is applied to the upper surface of the gate, a large frictional force is applied to open the gate 27, and it is difficult to require a large force to open the gate 27. The cone gate shown in FIG.
A mechanism for opening and closing the gate 37 is required inside,
It is not suitable as a storage hopper for adhering matter, and at the same time it can be formed relatively compact with a small hopper. However, as a large hopper, the gate hanging bar receives the force applied to the gate 37 and further moves the hanging bar up and down. There are many disadvantages, such as the full load being applied to the center of the shaft. In the case of the flap gate shown in FIG. 9, the seal of the gate surface is good for the small hopper and the use is simple. However, since the load of the storage material is entirely applied to the upper surface of the gate 47, the gate holding force is reduced in the large hopper. It must be large, which is uneconomical and costly. Further, the opening and closing space of the gate 47 is required for the turning angle of the gate, and the space for installing the hopper is disadvantageous. The vertical gate shown in FIG. 10 is a method in which the gate 57 is moved up and down by opening a part of the side surface of the hopper, but the bottom surface of the hopper must be inclined so that the stored material can flow naturally. Requires dead space equivalent to the height of In addition, since the flowing force of the stored material is applied to the upper surface of the gate, the opening force above the gate requires a large force against the weight of the gate plus the frictional force of the stored material. Furthermore, since the stored material flows down in a parabolic manner along the inclination angle of the bottom of the hopper, and the flowing down position changes depending on the opening degree of the gate, a large container is required for receiving the flowing down material.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and a main object of the present invention is to reduce the forward and backward movement of a gate member for opening and closing a discharge port of a hopper. An object of the present invention is to provide a gate device that saves space.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a storage in which a discharge port formed in a hopper is opened and closed by a gate member via a link pivotally connected to the hopper. In the gate device of the hopper, a pair of front and rear links are respectively pivoted and hung on the side surface of the hopper, and each end side of the link is axially attached to a gate member closely contacted with the discharge port, and the discharge port is a gate member. It is gradually inclined upward in the regression direction, the short link provided in the regression direction is set to a shorter length than the long link provided in the traveling direction, and the long link connects the gate member. A pivot position as a center of rotation is set to rotate downward when opened, and rotate upward beyond a vertical intermediate position, and the short link pivots so as to rotate only upward when opening the gate member. The long link and the short link are arranged so that the position is set and the long link and the short link are always substantially in the shape of a letter, and open the gate on the gate member until the long link rotates downward and is displaced to the vertical position. Than the force
A technical measure is taken in which the pivot position and the length of the link are set so that the force for closing the gate applied to the short link is greater, and the discharge port can be closed by the weight of the gate member.

[0006]

The present invention thus constructed has the following effects. That is, the gate member is suspended by the link and closes the discharge port. Since both ends of the link are pivotally mounted, and the rotational radii are different between the pair of links, as the gate member retreats, the gate member swings upwards and opens to reduce the opening and closing space of the gate member.
Further, since the opened gate member descends by its own weight, it can be automatically closed. Since the short link is set in the retreating direction of the gate member by setting the length difference between a pair of links, the discharge port can be opened without leaving the gate member largely away from the hopper, and the opening and closing space of the gate member is also Can be smaller.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a storage hopper gate device according to the present invention will be described below with reference to the drawings.
FIG. 1 shows a side surface of the storage hopper 1 having a plate-like gate member 6, and the right side in the figure is the retreat direction of the gate member 6.
The storage hopper 1 has a substantially rectangular cylindrical shape, and has an inlet 1A at an upper portion and an outlet 1B at a lower portion.

The lower end surface of the discharge port 1B is formed to be inclined upward in the retreating direction of the gate member 6. On both sides of the hopper 1, a pair of links, ie, long links 2
And the short link 3 are pivotally attached to and suspended from the support shafts 4 and 5, respectively. The pair of links 2 and 3 are set to be long and short so that the turning radii are different. The long link 2 is on the traveling direction side (left side in the figure) of the gate member 6, and the short link 3 is
Is disposed on the retreat direction side (right side).

In this case, both the links 2 and 3 are set in a substantially C-shape so that the lower ends of the links are located outside the hopper 1 when rotated about the support shafts 4 and 5. When the outlet 1B is sealed by the gate member 6, the lower edge of each of the links 2 and 3 is
Are mounted on the sides of shafts 7 and 8.

In the above configuration, when the right end (the shaft 8 side) of the gate member 6 is pulled up in the direction (A), the gate member 6 rotates the links 2 and 3 around the support shafts 4 and 5. Move along the trajectory. That is, the gate member 6 rotates at the small radius of the short link 3 about the shaft 5 and the lower shaft 8 moves to the position of the shaft 8A indicated by the imaginary line. Requires no space. In FIG. 1, the moved gate member 6 is
To the position along the inclined surface on the back side of the discharge port 1B.
At the same time, the front of the gate member 6 rotates with the large radius of the long link 2 about the shaft 4.

Here, in front of the gate member 6, from the start of rotation to a substantially intermediate position where the long link 2 hangs down,
In order to widen the degree of opening of the gate member 6 while the shaft 7 rotates downward, a force F1 (the arm length of the long link 2 centering on the support shaft 4) is applied to the shaft 7 to force the stored material in the hopper to the outside. The applied force acts in a direction to open the gate member 6. On the other hand, since the short link 3 moves upward, a force F2 (a force acting on the shaft 8 with the arm length of the short link 3 about the support shaft 5) acting on the gate member 6 acts on the gate member 6. . Therefore, the force F1 for opening the gate member 6
The difference between the closing force and the closing force F2 further subtracts the force by which the stored material opens the gate member 6 and moves out. Therefore, the gate member 6 can be moved in the opening direction with a considerably small force. it can.

On the other hand, when closing the gate, the gate member 6 can be closed by its own weight, and no external force is required for closing. However, in order to perform self-locking, the force F2 is smaller than the force F1. It is necessary to determine the positions of the support shafts 4 and 5 and the lengths of the long link 2 and the short link 3 so as to satisfy the condition that they are larger.

In the present invention, the gate member 6 is connected to the outlet 1B.
, There is no fear of friction, and the front (left side in the figure) of the gate member 6 descends and rotates to the side (see the phantom line in FIG. 1). The degree of opening is larger than the movement amount of the member 6, and the flow of the stored material becomes smooth. The lower part of the hopper 1 is connected to the discharge port 1B by being squeezed so as to have a smaller diameter toward the inside. Therefore, when the gate member 6 is moved, as shown in FIG. 2, the flow in the direction of arrow F1 on the lower front inclined surface of the hopper 1 and the flow of F2 on the lower rear inclined surface of the hopper 1 and the inclined surface of the gate member 6 are changed. Since the flow in the direction of the arrow intersects, the flow becomes quiet rather than parabolic discharge.

When the opening degree of the gate member 6 is increased, the stored material can flow down almost vertically. Further, as shown in FIG. 2, a guide 6A ′ that rises on both sides of the gate member 6 and covers the discharge port of the hopper 1 on the side.
Is mounted, the gate member 6 has a channel shape in cross section, and can effectively prevent the storage material from scattering and discharge the storage material quietly.

FIG. 3 to FIG. 5 show different embodiments in which the hopper is a symmetrical double-row type. When the storage hopper is made large, the discharge port becomes large, and naturally the gate member must also be made large. Therefore, in this embodiment, the two hoppers 1 shown in FIGS. 1 and 2 are arranged symmetrically, and have the same configuration as the above embodiment. Description is omitted. The gate member 6 opens and closes by the expansion and contraction of the hydraulic cylinder 9.

In the drawing, reference numeral 10 denotes a discharge head of a conveyor (not shown) for conveying stored goods, 11 denotes a branch pipe for branching the discharge discharged from the discharge head to two hoppers, and 12 denotes the inside of the hopper 1. A drain pipe 13 for separating waste oil that accumulates in the hopper 1 is a support frame for supporting the pair of hoppers 1 and 1.

According to this configuration, the left and right hydraulic cylinders 9, 9 are simultaneously operated to rotate the left and right gate members 6, 6, so that the respective discharge ports 1B, 1B can be simultaneously opened. It can be opened and closed separately. In FIG. 3, the storage hoppers 1 and 1 are of a double type, but the same configuration can be achieved by disposing a middle partition plate vertically at the center of one storage hopper 1 or the like. Further, a structure in which a partition is not provided at the center and one storage portion is provided may be adopted. In this case, it is necessary to adopt a configuration in which the tips overlap one another up and down so that the opposing gate members 6 do not form a gap at the tips, or a sealing structure that abuts without gaps.

In the present invention, the structure for opening and closing the gate member is not particularly limited, and any structure may be used as long as it can apply a lifting force for rotating the gate member in the retreating direction. In the present invention, the configuration for automatically opening and closing the discharge port by the gate member is not limited to the illustrated example, and may employ a configuration of pulling using a wire, a configuration using a link mechanism, and other appropriate configurations. Further, since the gate member returns to the closed position by its own weight as described above, the opening and closing of the discharge port can be automated even if only the means for raising the gate member to the open position is provided.

[0019]

As described above, the present invention has the following excellent effects. Since the gate member is configured to rotate and open with a small radius by two pairs of long and short links, a space for opening and closing the gate can be reduced. Since the force flowing down the stored material acts in the opening and closing direction of the gate member, the driving force for opening and closing the gate can be reduced. The discharge port can be closed by the weight of the gate member due to the configuration of the long link and the short link. Since the gate member is supported by the pair of links, the configuration is simple, the reliability is excellent, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a gate device of a storage hopper.

FIG. 2 is a schematic diagram showing a flow direction of a storage material in FIG. 1;

FIG. 3 is a side view of a gate device showing a different embodiment in which the hopper is of a double type.

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a plan view of FIG. 3;

6 to 10 are explanatory diagrams showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage hopper 1B Discharge port 2 Long link 3 Short link 4 Axis 5 Axis 6 Gate member 7 Axis 8 Axis 9 Drive device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65G 65/30-65/48 B65D 90/58 B65D 90/62

Claims (3)

(57) [Claims] 1. A storage hopper gate device in which a discharge port formed in a hopper is opened and closed by a gate member via a link pivotally connected to the hopper, wherein a pair of front and rear links are respectively provided on side surfaces of the hopper. Pivot and hanging, each tip side of the link is axially attached to the gate member closely contacted with the discharge port, and the discharge port is gradually inclined upward in the retreat direction of the gate member, and in the retreat direction. The provided short link is set to a shorter length than the long link provided in the traveling direction, and the long link rotates downward when opening the gate member, and upwards when exceeding a vertical intermediate position. The pivot position is set to be the center of rotation so as to rotate, and the short link is set to pivot only upward when the gate member is opened. And a force for closing the gate on the short link, rather than a force for opening the gate on the gate member until the long link rotates downward and is displaced to the vertical position. Wherein the discharge port can be closed by the weight of the gate member by setting the pivot position and the length of the link so that the gate device becomes larger. 2. A pair of front and rear long links and short links are pivotally mounted on both sides of a hopper having a discharge port at a lower portion, respectively.
The lower end edge of each of the links is axially attached to a gate member that is in close contact with the discharge port, and the discharge port is gradually inclined upward toward the retreating direction of the gate member. The gate device for a storage hopper according to claim 1, wherein a driving member of the driving device is connected. 3. A gate in which hoppers are symmetrically arranged, a long link and a short link are pivotally mounted on a pair of front and rear sides of each hopper, and the tip end of each link is closely contacted with a discharge port. 2. The gate device for a storage hopper according to claim 1, wherein the discharge port is mounted on the member and the discharge port is gradually inclined upward in a retreating direction of the gate member.