Portable plant with variable cement silo

Abstract

To provide a variable type cement silo-mounted portable plant solving the problem that, though it has a constitution where, plural cylindrical members are lengthwise extended to expand a volume, since the positional relationship between a cement silo and a mixer is not changed, a distance between a cement silo exhaust part and the mixer is close, a water splash is poured on the exhaust part of the cement silo upon stirring the mixer, and it is reacted with the cement to clog the exhaust part.SOLUTION: In a variable type cement silo-mounted portable plant, a plant frame 3 having a prescribed shape is provided with a mixer stirring at least water and cement to produce cement milk; and a cement silo 2 feeding the cement to the mixer 5, the plant frame 3 is composed so as to be loaded in a conveyance vehicle to be conveyed, the cement silo 2 is fitted so as to be vertically moved with respect to the plant frame 3, and the cement silo 2 is composed so as to switch between the conveyance state in the lower part and the conveyance state in the upper part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a portable plant equipped with a variable cement silo. [Background technology]

[0002] Conventionally, a plant frame of a predetermined shape is provided with at least a mixer that mixes water and cement to produce cement milk, and a cement silo that supplies cement to the mixer, the cement silo being formed by stacking multiple tubular members, and a portable plant equipped with a variable cement silo is transported with the tubular members stacked, and at the construction site the tubular members are unfolded vertically to expand the volume, and cement milk is produced in this state.This configuration is well known (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Jikko No. 55-38654 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned known example, the volume is expanded by vertically deploying multiple tubular members, but the relative positions of the cement silo and the mixer are not changed, so the distance between the cement silo discharge section and the mixer is short, and water splashing during mixing by the mixer hits the discharge section of the cement silo, reacts with the cement, and clogs the discharge section, which is an issue. Furthermore, frequent cleaning is required to remove the solidified cement from the discharge section of the cement silo, and furthermore, there is the problem that the chipping work is quite troublesome. Furthermore, in known examples, although it is possible to meet the transport height restrictions under the Road Traffic Act by configuring multiple tubular members to expand their volume by extending them vertically, there is a problem in that when using a method of extending and retracting a cement silo, cement may get into the movable parts of the stacked tubular members, making them unable to move, making them impossible to transport. This application is a small cement milk supply plant, but by unfolding the cement silo during construction, it can be transported as a single unit and the impact of water splashing from the mixer is reduced. [Means for solving the problem]

[0005] The invention of claim 1 comprises a transportable plant frame 3 of a predetermined shape, which is provided with at least a mixer 5 for mixing water and cement to produce cement milk, an agitator 6 for temporarily storing the cement milk produced by the mixer 5 while stirring it to prevent it from solidifying, and a cement silo 2 for supplying cement to the mixer 5, and the plant frame 3 is configured so that it can be loaded onto a transport vehicle and transported to a work site for pile driving or ground improvement, having a predetermined volume The cement silo 2 does not have any movable parts in itself, and the storage part 10 of the cement silo 2 whole The shape remains unchanged and the mixer 5 of the plant frame 3 is attached so as to be movable up and down. The cement silo 2 is The entire storage section 10 This is a portable plant equipped with a variable cement silo that can be freely switched between a lower transport state and an upper working state. The invention of claim 2 is a portable plant equipped with a variable cement silo, in which the cement silo 2 is configured to be freely movable up and down relative to the plant frame 3 by a vertical movement mechanism 15. In the invention of claim 3, the cement silo 2 is a portable plant equipped with a variable cement silo, in which a single storage section 10 is configured to be freely movable up and down relative to the plant frame 3. [Effects of the Invention]

[0006] In the invention of claim 1, the plant frame 3 is configured to be transportable by being loaded onto a transport vehicle, the cement silo 2 is attached to the plant frame 3 so that it can be moved up and down, and the cement silo 2 is configured to be freely switched between a lower transport state and an upper working state.This makes it possible to transport the portable plant 1 equipped with an adjustable cement silo within the transport height restrictions set forth in the Road Traffic Act, while also allowing the cement silo 2 and the mixer 5 to be spaced apart during construction, thereby preventing water splashing during mixing by the mixer 5 from coming into contact with the cement transported from the cement silo 2. In the invention of claim 2, the cement silo 2 is configured to be movable up and down relative to the plant frame 3 by the vertical movement mechanism 15, so that the cement silo 2 can be easily switched between the transport state and the working state. In the invention of claim 3, the cement silo 2 is configured so that the single storage section 10 can move freely up and down relative to the plant frame 3, so the cement silo 2 can be placed at a distance from the mixer 5 to prevent water splashing when the mixer 5 is stirring from coming into contact with the cement.Compared to conventional configurations in which the volume is changed by extension and contraction, there is no need to provide the cement silo 2 with movable parts.By changing only the position of the storage section 10 of the cement silo 2 without changing its shape, the number of movable parts of the cement silo 2 can be reduced, and the risk of the cement silo 2 becoming unable to operate due to cement getting into these movable parts can be reduced. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a front view of a portable plant with a variable cement silo, with the cement silo in the stowed position. [Figure 2] FIG. 1 is a front view of a portable plant with a variable cement silo, with the cement silo in working position. [Figure 3] FIG. 1 is a side view of a portable plant with a variable cement silo, with the cement silo in a stowed position. [Figure 4] FIG. 1 is a side view of a portable plant with a variable cement silo, with the cement silo in working position. [Figure 5]Plan view of a portable plant equipped with a variable cement silo. DETAILED DESCRIPTION OF THE INVENTION

[0008] One embodiment of the present invention will be explained with reference to the drawings. Reference numeral 1 denotes a portable plant equipped with a variable cement silo, in which the cement silo 2 is mounted on a plant frame 3. Inside the plant frame 3 near the cement silo 2, there are provided at least a mixer 5 that mixes water and cement to produce cement milk, and an agitator 6 that temporarily stores the cement milk produced by the mixer 5 while stirring it to prevent it from solidifying. Reference numeral 4 denotes a workbench mounted on the top surface of the plant frame 3. The cement silo 2 has a cement supply port 11 at the top of the storage section 10 and a conveying device 12 for conveying the cement in the storage section 10 at the bottom of the storage section 10. The transport device 12 may have any configuration, but is configured by a screw conveyor. The upper part of a cement charging tube 13 for charging cement into the mixer 5 is attached to the end of the conveying device 12. The cement charging tube 13 is made of a non-metallic, deformable, flexible member (for example, a rubber member).

[0009] The lower end of the cement charging tube 13 is left free and is inserted into the mixer 5 . The plant frame 3 (portable plant 1 equipped with a variable cement silo) is configured so that it can be loaded onto a transport vehicle such as a truck and transported, and the cement silo 2 is attached to the plant frame 3 so that it can move up and down, and the cement silo 2 is configured so that it can be freely switched between a lower transport state and an upper working state. Therefore, it is possible to transport the portable plant 1 equipped with an adjustable cement silo within the transport height restrictions imposed by the Road Traffic Act, while at the same time, by increasing the distance between the cement silo 2 and the mixer 5 during construction, it is possible to prevent water splashing during mixing by the mixer 5 from coming into contact with the cement transported from the cement silo 2.

[0010] In other words, the cement silo 2 is attached to the plant frame 3 so that it can be freely moved up and down by the vertical movement mechanism 15, and when the portable plant 1 equipped with a variable cement silo is transported, the entire storage section 10 is positioned downward and stored within the plant frame 3 to be in a transportable state, and when in the working state to produce cement milk, the storage section 10 of the cement silo 2 is moved upward for work. In this case, the base of a conveying device 12 that conveys the cement inside the cement silo 2 is connected to the bottom of the cement silo 2, and the tip of the conveying device 12 faces above the mixer 5 provided on the plant frame 3 on the side of the cement silo 2, and the conveying device 12 is configured to move up and down relative to the plant frame 3 together with the storage section 10 of the cement silo 2. Furthermore, the storage section 10 of the cement silo 2 is configured to be able to move up and down integrally with the conveying device 12 relative to the plant frame 3.

[0011] Therefore, by moving the cement silo 2 upward relative to the plant frame 3, the end of the conveying device 12 is spaced higher relative to the mixer 5, preventing water splashing during mixing by the mixer 5 from coming into contact with the cement conveyed from the cement silo 2. 5A is a support frame for the mixer 5. In addition, the cement silo 2 has a single storage section 10 that can be moved up relative to the plant frame 3 to separate it from the mixer 5, preventing water splashing when the mixer 5 is stirring from coming into contact with the cement.By changing only the position of the storage section 10 of the cement silo 2 without changing its shape, the number of moving parts in the cement silo 2 is reduced, reducing the risk of cement getting into these moving parts and causing the silo to become inoperable. In other words, compared to the conventional cement silo 2 having a multiple-layer structure with multiple stacked cylindrical members, the number of moving parts in the cement silo 2 can be reduced, thereby reducing the risk of the silo becoming inoperable due to cement getting into these moving parts.

[0012] The cement charging cylinder 13 is made of a non-metallic, flexible material (for example, a rubber material). Therefore, even if water splashes onto the cement in the cement charging tube 13 and the cement hardens and adheres to it, the cement charging tube 13 itself deforms, facilitating the work of peeling off (chipping off) the adhering cement and facilitating maintenance. In this case, the top of a cement charging tube 13 made of a flexible member is attached to the tip of the conveying device 12 , and the bottom end of the cement charging tube 13 is left free and is positioned inside the mixer 5 . The plant frame 3 may have any configuration, but as an example, an upper frame 17 is supported by a plurality of vertical frames 16, and the lower portions of the vertical frames 16 are fixedly attached to a lower frame 18.

[0013] An intermediate frame 19 having a rectangular frame shape in plan view is provided below the cement silo 2, and horizontal frames 20 of the intermediate frame 19 are connected to each other in the front, back, left and right directions. In this case, the cement silo 2 is attached to the plant frame 3 so as to be movable up and down by a vertical movement mechanism 15 , and the vertical movement mechanism 15 attaches the cement silo 2 to the plant frame 3 by a plurality of actuators 25 . The lower part of an actuator 25 constituting part of the vertical movement mechanism 15 is attached to the horizontal frame 20 of the intermediate frame 19, and the upper part of the actuator 25 is attached to the cement silo 2. The actuator 25 may have any configuration, and may be configured by a hydraulic or pneumatic cylinder, a screw jack, or the like. The plurality of actuators 25 support the cement silo 2 and act as a drive source for raising and lowering the cement silo 2 relative to the plant frame 3 .

[0014] In this case, a reinforcing frame 26 is detachably attached to the storage section 10 of the cement silo 2 located at the upper working position. Reference numeral 26 denotes a reinforcing frame that reinforces the support of the cement silo 2 when it is moved up, and is detachably attached to the cement silo 2. The reinforcing frame 26 is detachably attached to the side of the storage section 10 of the cement silo 2 by means of fasteners such as knob bolts (not shown). The cement silo 2, mixer 5, and agitator 6 may be arranged in any configuration within the plant frame 3, but as an example, the cement silo 2 is provided on the upper right side when viewed from the front of the portable plant 1 equipped with a variable cement silo, and a conveying device 12 is arranged in the left-right direction below the cement silo 2, with the base of the conveying device 12 connected to the bottom of the storage section 10 of the cement silo 2. The conveying device 12 is configured to convey cement upward.

[0015] A mixer 5 is provided at the upper left position when viewed from the front of the portable plant 1 equipped with an adjustable cement silo. The lower part of the cement charging tube 13 is inserted into the right side of the mixer 5. In this case, the cement silo 2 is mounted on the plant frame 3 on the upper right side when viewed from the front so that it can move up and down freely, a conveying device 12 is arranged below the cement silo 2 so that the conveying direction is left and right, and the base of the conveying device 12 is connected to the bottom of the cement silo 2, a space 30 is provided below the cement silo 2 for the cement silo 2 to move up and down, an agitator 6 is provided below the space 30, a mixer 5 is provided on the left side when viewed from the front, and a part of the left side of the agitator 6 is positioned so that it overlaps vertically below the right side of the mixer 5 when viewed from the front. A space 30 is provided below the cement silo 2 so that the cement silo 2 can move up and down, and an agitator 6 is provided below the space 30.

[0016] When viewed from the front, a portion of the left side of the agitator 6 is positioned below the right side of the mixer 5, and although not shown in the figure, the mixer 5 and the agitator 6 are connected at the portion where they overlap vertically. Therefore, the space 30 ensures an operating space for the cement silo 2 to move up and down, while the mixer 5 and agitator 6 can be arranged within the plant frame 3, making it possible to provide a portable plant 1 equipped with a small, adjustable cement silo. In this case, the cement silo 2 is attached to the plant frame 3 so that it can be moved up and down freely using the vertical movement mechanism 15, the cement silo 2 is placed in a lower transport position and loaded onto a transport vehicle, which is transported to the construction site, and once the plant frame 3 is installed at the construction site, the actuator 25 of the vertical movement mechanism 15 is activated to raise the cement silo 2 above the transport position to a working position above, and cement is supplied to this cement silo 2. The cement supplied to the cement silo 2 is transported to the mixer 5 by the conveying device 12 which moves upward integrally with the cement silo 2, and the water and cement are stirred in the mixer 5 to produce cement milk.

[0017] (Operation of the embodiment) The present invention has the above-described configuration, and the portable plant 1 equipped with a variable-type cement silo is transported and installed at a work site for pile driving or soil improvement or near the work site. The portable plant 1 equipped with a variable cement silo is configured so that it can be loaded onto a transport vehicle such as a truck for transport, and the cement silo 2 is configured so that it can be freely moved (deployed) between a transport state in which it is stored within the lower plant frame 3 and a working state in which it is moved upward, so that the cement silo 2 is stored within the plant frame 3 in the transport state, and in this state it is loaded onto a transport vehicle for transport. Therefore, it is possible to transport the portable plant 1 equipped with a variable-type cement silo within the transportation height limit set forth in the Road Traffic Act, and the transport work of the portable plant 1 equipped with a variable-type cement silo can be facilitated.

[0018] At the construction site, the portable plant 1 equipped with a variable cement silo is lowered from the transport vehicle using a crane or the like and set up. In the installed portable plant 1 equipped with a variable-type cement silo, the cement silo 2 is attached to the plant frame 3 so as to be movable up and down, so the cement silo 2 is moved above the storage position. Therefore, the height of the cement inlet tube 13, which is the position where cement is supplied to the plant frame 3 of the cement silo 2, can be made higher than the mixer 5, allowing the cement silo 2 and the mixer 5 to be spaced apart during construction work, and preventing water splashing during mixing by the mixer 5 from coming into contact with the cement supplied and transported from the cement silo 2.

[0019] In other words, the cement silo 2 is attached to the plant frame 3 by a vertical movement mechanism 15 so that it can be freely moved up and down, and when the portable plant 1 equipped with a variable cement silo is transported, part of the storage section 10 is stored within the plant frame 3 to set it in a transportable state, and when in the working state of producing cement milk, the storage section 10 of the cement silo 2 is moved upward for work. Therefore, by moving the cement silo 2 upward relative to the plant frame 3, the end of the conveying device 12 is separated higher from the mixer 5, so that water splashing during mixing by the mixer 5 can be prevented from coming into contact with the cement transported from the cement silo 2. In addition, the cement silo 2 has a single storage section 10 that can be moved up relative to the plant frame 3 to separate it from the mixer 5, preventing water splashing when the mixer 5 is stirring from coming into contact with the cement.By changing only the position of the storage section 10 of the cement silo 2 without changing its shape, the number of moving parts in the cement silo 2 is reduced, reducing the risk of cement getting into these moving parts and causing the silo to become inoperable.

[0020] In other words, compared to the conventional cement silo 2 having a multi-layer structure with multiple stacked cylindrical members, the number of moving parts in the cement silo 2 can be reduced, thereby reducing the risk of the silo becoming inoperable due to cement getting into these moving parts. Furthermore, since the cement injection tube 13 is formed from a non-metallic, deformable, flexible material (e.g., rubber material), even if water splashes onto the cement inside the cement injection tube 13 and the cement hardens and adheres to it, the cement injection tube 13 itself will deform, facilitating the work of peeling off (chipping off) the adhering cement and facilitating maintenance. The plant frame 3 is constructed so that an upper frame 17 is supported by a plurality of vertical frames 16, and the lower parts of the vertical frames 16 are fixedly attached to a lower frame 18. This allows the areas around the cement silo 2, conveying device 12, mixer 5, agitator 6, etc. to be left open, facilitating maintenance of these components.

[0021] The lower parts of a plurality of extension actuators 25 that form part of the up-and-down movement mechanism 15 are attached to the horizontal frame 20 of the intermediate frame 19 of the plant frame 3, and the upper part of each actuator 25 is attached to the cement silo 2, so that the cement silo 2 can be moved upward relative to the plant frame 3 by operating the actuators 25. Furthermore, since a reinforcing frame 26 is attached to the raised cement silo 2, the rigidity of the cement silo 2 itself can be ensured, and the cement storage capacity of the cement silo 2 can be ensured. In the portable plant 1 equipped with a variable cement silo, the cement silo 2, which is partially stored within the plant frame 3, is moved upward relative to the plant frame 3 to be in an operating state. When cement is poured into the cement silo 2, the poured cement is transported by the conveying device 12 and supplied into the mixer 5 from the end of the conveying device 12 via the cement feeding tube 13.

[0022] Water is supplied to the mixer 5 from a water tank separately installed at the construction site, and the cement and water are mixed in the mixer 5 to produce cement milk.The produced cement milk is then transferred to the agitator 6 and stored, and the stored cement milk is used for ground improvement, etc. When the production of cement milk by the portable plant 1 equipped with a variable cement silo is completed, the reinforcing frame 26 is removed from the cement silo 2, and the actuator 25 is activated to lower the cement silo 2 back to its original position and store it within the plant frame 3. After the cement silo 2 has been stored, the portable plant 1 equipped with the convertible cement silo is loaded onto a transport vehicle and transported to a desired location. [Explanation of symbols]

[0023] 1...portable plant equipped with adjustable cement silo, 2...cement silo, 3...plant frame, 4...support frame, 5...mixer, 5A...work platform, 6...agitator, 10...storage section, 11...cement supply port, 12...conveying device, 13...cement feeding tube, 15...up and down movement mechanism, 16...vertical frame, 17...upper frame, 18...lower frame, 19...intermediate frame, 20...horizontal frame, 25...actuator, 26...reinforcing frame, 30...space.

Claims

1. A portable plant equipped with a variable cement silo, in which at least a mixer 5 that mixes water and cement to produce cement milk, an agitator 6 that temporarily stores the cement milk produced by the mixer 5 while stirring it to prevent it from solidifying, and a cement silo 2 that supplies cement to the mixer 5 are provided on a transportable plant frame 3 of a predetermined shape, and the plant frame 3 is configured so that it can be loaded onto a transport vehicle and transported to a work site for pile driving or ground improvement, and the cement silo 2 having a predetermined volume is attached to the mixer 5 of the plant frame 3 so that it can move up and down relative to the mixer 5 without providing any movable parts to the cement silo 2 itself, while the overall shape of the storage section 10 of the cement silo 2 remains unchanged, and the entire storage section 10 of the cement silo 2 is configured so that it can be freely switched between a lower transport state and an upper working state.

2. 2. A portable plant equipped with a variable cement silo according to claim 1, wherein the cement silo is movable up and down relative to the plant frame by a vertical movement mechanism.

3. 3. A portable plant equipped with a variable cement silo according to claim 2, wherein the cement silo has a single storage section that is movable up and down relative to the plant frame.

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