Construction equipment

Abstract

In order to install a unit in a suitable state at a construction site or the like, a construction device according to the present invention comprises: a first unit that executes a first step on an object to be processed; and a second unit that executes a second step on the object to be processed. The second unit has a body section that executes the second step and a base section that supports the body section. The base section is connected to the body section at a first connection portion, and the body section engages with the first unit at a second connection portion. A variable mechanism having a high-rigidity part made of metal is provided between the base section and the body section, and / or between the body section and the first unit, the variable mechanism capable of changing the distance between the first connection portion and the second connection portion.　

Description

[Technical Field]

[0001] The present invention relates to construction equipment. [Background technology]

[0002] BACKGROUND ART Conventionally, self-propelled devices and plant-type devices have been known as soil improvement devices (see, for example, Patent Documents 1 and 2).

[0003] In the case of a plant-type device, since it has a plurality of units, it is necessary to transport these units to a construction site or the like and install them in an appropriate positional relationship. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-71427 [Patent Document 2] Japanese Patent Application Laid-Open No. 2011-156735 Summary of the Invention [Problem to be solved by the invention]

[0005] In order to ensure that the units are positioned appropriately when multiple units are installed, each unit is provided with a connecting portion for engaging (connecting) with other units.

[0006] Typically, when installing a unit at a site, the unit is lifted by a crane or the like and transported to the vicinity of the installation location, and then lowered to the installation location while engaging the connecting portion of the unit with the other units. However, with this installation method, there is a risk that the unit cannot be installed at the installation location in an appropriate state due to the relationship between the degree of freedom of the connecting portion and the degree of freedom of other portions.

[0007] In one aspect, the present invention aims to provide a construction device that allows units to be installed in an appropriate state at a construction site, etc. Another object of the present invention is to provide a construction device that allows units to be easily installed. [Means for solving the problem]

[0008] In a first aspect, the construction equipment comprises a first unit that performs a first process on an object to be treated, and a second unit that performs a second process on the object to be treated, the second unit having a main body that performs the second process and a base that supports the main body, the base being connected to the main body at a first connection portion, and the main body being engaged with the first unit at a second connection portion, and a variable mechanism having a high-rigidity metal portion that changes the distance between the first connection portion and the second connection portion being provided at least either between the base and the main body or between the main body and the first unit.

[0009] In a second aspect, the construction equipment comprises a first unit having a treatment device that performs a first process on an object to be treated and a base that supports the treatment device, and a second unit having a main body that performs a second process on the object to be treated and a first support part that supports the main body, wherein the first support part has an axial member that extends in a uniaxial direction within the horizontal plane of the base, and a support member that supports the axial member rotatably around the uniaxial direction. [Effects of the Invention]

[0010] In the first aspect, the unit can be installed in an appropriate state at a construction site, etc. In addition, in the second aspect, the unit can be easily installed. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of a mixing system according to one embodiment. [Figure 2] FIG. 2 is a partial cross-sectional view of the soil mixing device. [Figure 3] FIG. 3(a) is a perspective view of the discharge belt conveyor and the soil mixing device, and FIG. 3(b) is a view showing the discharge belt conveyor and the soil mixing device as viewed from the +Y side. [Figure 4] FIG. 4(a) is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 4(b) is a diagram for explaining a case where the conveyor body of the discharge belt conveyor is arranged in a shifted position. [Figure 5] FIG. 2 is a perspective view showing a V-groove bearing mechanism. [Figure 6] Figure 6(a) is an oblique view showing a portion of the input belt conveyor 12, the soil mixing device 10 and the discharge belt conveyor 14, and Figure 6(b) is a view showing a portion of the input belt conveyor, the soil mixing device and the discharge belt conveyor as viewed from the +Y direction. [Figure 7] FIG. 7(a) is an enlarged perspective view showing the vicinity of the front leg of the feeding belt conveyor, and FIG. 7(b) is a perspective view showing the vicinity of the end of the feeding belt conveyor on the +Y side. [Figure 8] 8(a) to 8(c) are diagrams (part 1) that schematically show the procedure for installing the input belt conveyor. [Figure 9] 9(a) to 9(c) are diagrams (part 2) that schematically show the procedure for installing the input belt conveyor. [Figure 10] 10(a) and 10(b) are diagrams for explaining the case where the head chute is not lifted up. [Figure 11] 11(a) to 11(f) are diagrams for explaining the effects of the link mechanism. [Figure 12] FIG. 12(a) is a diagram showing one of the weighing belt conveyors as viewed from the +X direction, and FIG. 12(b) is a perspective view schematically showing the two weighing belt conveyors and the feeding belt conveyor. [Figure 13] FIG. 2 is an enlarged perspective view showing the vicinity of a front leg of one of the weighing belt conveyors. [Figure 14] 14(a) and 14(b) are perspective views showing an apron feeder. [Figure 15]FIG. 10 is a diagram showing the other weighing belt conveyor as viewed from the +X direction. [Figure 16] FIG. 10 is an enlarged perspective view showing the vicinity of the front leg of the other weighing belt conveyor. [Figure 17] FIG. 1 is a diagram schematically illustrating the reference state of two weighing belt conveyors and a feeding belt conveyor as viewed from the +Z direction. [Figure 18] FIG. 18(a) is a schematic diagram showing a state in which the conveyor body is tilted from the reference state, and FIG. 18(b) is a schematic diagram showing a state in which the tail frame is tilted from the reference state. [Figure 19] 19(a) and 19(b) are diagrams (part 1) for explaining a case where a displacement occurs in the positional relationship with the feeding belt conveyor due to an impact when the weighing belt conveyor is installed. [Figure 20] This is a diagram (part 2) to explain the case where a positional deviation occurs in relation to the feeding belt conveyor due to an impact when the weighing belt conveyor is installed. [Figure 21] FIG. 2 is a diagram schematically illustrating the degree of freedom of each part in a mixing system according to one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] A mixing system according to one embodiment will be described in detail below with reference to FIGS.

[0013] Fig. 1 is a perspective view showing a mixing system 100 as a construction device according to one embodiment. The mixing system 100 shown in Fig. 1 is a system that is installed at a construction site or the like.

[0014] As shown in Fig. 1, the mixing system 100 includes a soil / sand mixing device (twister) 10, an input belt conveyor 12, a discharge belt conveyor 14, weighing belt conveyors 16 and 18 as subunits, apron feeders 20 and 22, and a powder feeder 24. Each unit of the mixing system 100 of this embodiment is a stationary unit that is placed at a predetermined position on the construction site. In Fig. 1, the vertical direction is the Z-axis direction, and in a plane perpendicular to the Z-axis, the left-right direction of Fig. 1 is the X-axis direction, and the depth direction is the Y-axis direction.

[0015] (Regarding the soil mixing device 10) The soil mixing apparatus 10 is equipped with an impact applying member (impact member) that rotates at high speed inside a cylindrical container, and crushes and refines construction generated soil introduced into the container by the impact force of the impact member. In other words, in this embodiment, the soil mixing apparatus 10 corresponds to the first unit, and the processing performed by the soil mixing apparatus 10 corresponds to the first step. The construction generated soil introduced into the soil mixing apparatus 10 can be mixed with additives (lime-based solidification materials such as quicklime and slaked lime, cement-based solidification materials such as ordinary cement and blast furnace cement, soil improvement materials made of polymer materials, natural fibers, etc.) as needed. This allows the properties and strength of the improved soil to be adjusted. In other words, in this embodiment, the construction generated soil or construction generated soil mixed with additives corresponds to the object to be processed.

[0016] 2 shows a partial cross section of the soil mixing apparatus 10 as seen from the +Y side. As shown in FIG. 2, the soil mixing apparatus 10 includes a stand 102, a fixed drum 104, a rotating drum 106, and a rotation mechanism 108.

[0017] The stand 102 is a platform that holds each part of the soil mixing device 10. The fixed drum 104 is a cylindrical container that is fixed to the stand 102. The object to be treated is introduced into the fixed drum 104 through an inlet member 111, and the object to be treated (construction generated soil) is led into the rotating drum 106 that is provided on the lower side (-Z side) of the fixed drum 104.

[0018] The rotating drum 106 is a cylindrical container that rotates (spins) around the central axis of the cylinder (around the Z axis) by a rotating drum drive motor (not shown). The rotating drum 106 is supported by the frame 102 via multiple support rollers 110, and is therefore able to rotate smoothly by receiving the rotational force of the rotating drum drive motor. The rotation direction of the rotating drum 106 and the rotation direction of the impact member 112 may be the same or opposite.

[0019] One or more scraping bars (scrapers) 114 are provided inside the rotating drum 106. The scraping bars 114 are in contact with the inner circumferential surface of the rotating drum 106 and are fixed to the fixed drum 104. Therefore, as the rotating drum 106 rotates, the scraping bars 114 move relatively along the inner circumferential surface of the rotating drum 106. As a result, even if the treatment object adheres to the inner circumferential surface of the rotating drum 106, the treatment object is scraped off by the scraping bars 114 as the rotating drum 106 rotates.

[0020] A chute 113 is provided below (on the -Z side of) the rotating drum 106. The chute 113 functions as an entrance portion for guiding the object to be processed inside the rotating drum 106 to the discharge belt conveyor 14. The discharge belt conveyor 14 surrounds the lower opening of the chute 113 (the outlet portion of the chute 113).

[0021] The rotation mechanism 108 has a rotation shaft 116 extending in the vertical direction (Z-axis direction) positioned at the center of the fixed drum 104 and the rotating drum 106, a pulley 118 provided at the upper end of the rotation shaft 116, and two impact members 112 provided in two tiers, one above the other, near the lower end of the rotation shaft 116.

[0022] The rotating shaft 116 is a cylindrical member, and is held by the base 102 in a freely rotatable state via two ball bearings 120a, 120b provided on the upper surface of the base 102. A spacer 122 is provided between the two ball bearings 120a, 120b, leaving a predetermined gap between the ball bearings 120a, 120b. The lower end of the rotating shaft 116 is located inside the rotating drum 106 and serves as a free end. In other words, the rotating shaft 116 is supported in a cantilevered manner.

[0023] The pulley 118 is connected to a motor 155 (not shown in FIG. 2, see FIG. 1) via a belt. When the motor 155 rotates, the pulley 118 and the rotary shaft 116 rotate.

[0024] Each of the two-stage impact members 112 has a plurality of (for example, four) metal chains 124, and a thick steel plate 126 is attached to the tip of each chain 124. The chains 124 are arranged at equal intervals around the rotation shaft 116.

[0025] The impact member 112 rotates centrifugally due to the rotation of the rotary shaft 116, and the thick plates 126 move at high speed near the inner circumferential surface of the rotating drum 106, crushing and mixing the material to be treated. The number of chains 124 and thick plates 126 of the impact member 112 can be adjusted depending on the type and properties of the raw soil, the amount to be treated, the type and amount of additives, the target quality of the improved soil, etc.

[0026] In the soil mixing device 10 of this embodiment, the material to be treated that has been transported by the feed belt conveyor 12 is fed into the fixed drum 104 via the feed inlet member 111, where it is crushed and mixed by the impact members 112 inside the rotating drum 106 and then discharged below the rotating drum 106. The material to be treated that has been discharged below the rotating drum 106 passes through the inside of the chute 113 and is fed onto the discharge belt conveyor 14, where it is transported in the -X direction and the +Z direction in FIG. 2 .

[0027] In this embodiment, by employing the rotation mechanism 108 using the two ball bearings 120a, 120b as described above, it is possible to shorten the length of the rotation shaft 116 while maintaining the crushing and mixing performance and the small amount of deflection of the rotation shaft 116. This allows the height dimension of the soil mixing apparatus 10 to be reduced.

[0028] Returning to Figure 1, the soil mixing apparatus 10 (frame 102) is installed on an iron plate 130 laid on the ground. Because the ground below the iron plate 130 is leveled horizontally, the upper surface of the iron plate 130 is horizontal. Therefore, the soil mixing apparatus 10 is also installed without tilt (with the rotation axis 116 extending in the Z-axis direction). That is, in this embodiment, the iron plate 130 corresponds to the base.

[0029] (Regarding the discharge belt conveyor 14) Figure 3(a) shows an oblique view of the discharge belt conveyor 14 and the soil mixing device 10, and Figure 3(b) shows the discharge belt conveyor 14 and the soil mixing device 10 as viewed from the +Y side (side view).

[0030] As shown in FIGS. 3(a) and 3(b), the discharge belt conveyor 14 includes a conveyor body 142, a front leg 144, and a rotary bearing mechanism 146.

[0031] The conveyor body 142 has a belt that transports the crushed and mixed material discharged from the soil mixing device 10 in the -X direction and the +Z direction. That is, in this embodiment, the discharge belt conveyor 14 corresponds to the second unit, and the conveyor main body 142 corresponds to the main body portion. Also, in this embodiment, the transport of the processing object corresponds to the second step.

[0032] The front legs 144 are provided near the -X side end of the bottom surface of the conveyor body 142 via a pivot shaft 148. When the front legs 144 are installed at a construction site, they are opened in the direction of arrow AR1 shown in FIG. 3(b) and placed in an upright position as shown in FIG. 3(b). In other words, the discharge belt conveyor 14 is self-standing. On the other hand, when the discharge belt conveyor 14 is being transported, the front legs 144 are rotated in the direction of arrow AR2 shown in FIG. 3(b) and placed in a folded position. This allows the volume of the discharge belt conveyor 14 to be reduced during transportation, making it easier to transport.

[0033] As shown in FIG. 3( a), the front leg 144 includes a leg body 145 having a substantially rectangular frame shape and a spherical bearing mechanism 147 provided below the leg body 145. The spherical bearing mechanism 147 is a connecting part that allows the leg body 145 to change its position relative to the steel plate 130, and includes a spherical seat 152, a spherical bearing member 154 provided within the spherical seat 152, and a cylindrical member 156 that connects the spherical bearing member 154 to the leg body 145. That is, in this embodiment, the front leg 144 corresponds to the second support part, and the leg body 145 corresponds to the leg. The spherical seat 152 is fixed to the steel plate 130 laid on the ground with bolts or the like, with the position and posture of the discharge belt conveyor 14 fixed. The spherical bearing member 154 is rotatable relative to the spherical seat 152 in directions around the X-axis, the Y-axis, and the Z-axis. That is, the spherical bearing member 154 has three degrees of freedom (θx, θy, θz).

[0034] As shown in Figure 3(a), the rotary bearing mechanism 146 comprises a pair of shaft holding members 244 (the shaft holding member 244 on the -Y side is not shown) provided on the +Y side and -Y side of the conveyor main body 142, a cylindrical shaft member 245 extending in the Y-axis direction held by the pair of shaft holding members 244, and a pair of block members 246 with which the shaft member 245 engages.

[0035] A V-groove is formed on the upper surface of the block member 246, and the shaft member 245 is adapted to engage with the V-groove. The pair of block members 246 are aligned along the Y-axis direction and fixed to the iron plate 130 with bolts or the like. By engaging with the block member 246, movement of the shaft member 245 in the X-axis direction, Z-axis direction, and θx and θz directions is restricted, and movement in the Y-axis direction and rotation about the Y-axis are permitted. Note that a U-groove may be formed in the block member 246 instead of the V-groove. That is, in this embodiment, the rotary bearing mechanism 146 corresponds to a first support part, and the block member 246 corresponds to a support member that supports the shaft member 245 rotatably about one axis (the Y-axis in the figure).

[0036] FIG. 21 schematically illustrates the degree of freedom of each component within the mixing system 100 of this embodiment. As shown in FIG. 21, the discharge belt conveyor 14 is fixed (●) between the front legs 144 and the conveyor body 142, and the front legs 144 are allowed to change their orientation (θx, θy, θz) in the rotational directions around the X, Y, and Z axes by the spherical bearing mechanism 147. The rotational bearing mechanism 146 also allows the conveyor body 142 to change its orientation (θY) in the rotational direction around the Y axis relative to the iron plate 130 and its position in the Y axis direction. Therefore, by adjusting the position of the rotational bearing mechanism 146 in the Y axis direction and adjusting the fixed position of the spherical seat 152 of the spherical bearing mechanism 147, the conveyor body 142 can be placed in an appropriate orientation (a predetermined orientation relative to the earth's axis).

[0037] In this embodiment, when installing the discharge belt conveyor 14 at a construction site, the base 102 of the soil mixing device 10 is installed on the steel plate 130, and the discharge belt conveyor 14 is lifted using a crane or the like and installed from above at the position shown in FIG. 3(a). As shown in FIG. 3(a), the base 102 is provided with a beam member 163 extending in the X-axis direction but no beam member extending in the Y-axis direction, so that the discharge belt conveyor 14 can be installed from above the base 102. When the discharge belt conveyor 14 is installed, the front legs 144 are folded. Therefore, after the discharge belt conveyor 14 is installed above the steel plate 130, the worker opens the front legs 144 in the direction of arrow AR1 and stands the front legs 144 on the ground. At this time, the shaft member 245 of the rotation bearing mechanism 146 is engaged with the block member 246 fixed on the iron plate 130 in advance, the position of the discharge belt conveyor 14 in the Y-axis direction is adjusted, and with the posture of the discharge belt conveyor 14 stable, the spherical seat 152 of the front leg 144 is fixed to the iron plate 130. If a pair of block members 246 are installed side by side along the Y-axis direction, simply by engaging the shaft member 245 of the rotation bearing mechanism 146 with the block member 246, the conveying direction of the discharge belt conveyor 14 can be aligned with a direction perpendicular to the Y-axis direction, and the short side direction (width direction) of the discharge belt conveyor 14 can be aligned with the Y-axis direction.

[0038] This prevents the conveyor body 142 from being displaced relative to the chute 113, as shown in FIG. 4(a), which is a cross-sectional view taken along line AA in FIG. 2. For example, if the longitudinal direction of the conveyor body 142 deviates from the X-axis direction as viewed from above, a part of the conveyor body 142 (e.g., the conveyor frame 142a provided on the +Y side and the −Y side of the conveyor body 142) may come into contact (interfere) with the chute 113, as shown by the dashed circle B in FIG. 4(b). Furthermore, if the longitudinal direction of the conveyor body 142 deviates from the X-axis direction as viewed from above, a gap may be formed between the chute 113 and the conveyor frame 142a, as shown by the dashed circle C in FIG. 4(b), which may cause dust to leak out. Therefore, by aligning the longitudinal direction of the conveyor body 142 with the X-axis direction (the direction perpendicular to the Y-axis direction) as in this embodiment, mechanical interference between the conveyor body 142 and the chute 113 and the generation of dust can be suppressed.

[0039] Furthermore, in this embodiment, the portion of the rotary bearing mechanism 146 that needs to be fixed to the iron plate 130 (the block member 246) can be fixed onto the iron plate 130 before installing the discharge belt conveyor 14. Therefore, when fixing the block member 246, the conveyor body 142 and the like do not get in the way, so there is no need to reach into a narrow space when tightening the bolts on the block member 246, making the work easy.

[0040] In addition, in the past, the front legs and the conveyor body were separate, and the front legs were set up at the construction site in advance to take measures to prevent tipping, and then the conveyor body was installed from above.However, in this embodiment, the conveyor body 142 and the front legs 144 are integrated, so the discharge belt conveyor 14 can be installed at the construction site without any hassle.

[0041] Although the above description has been given of the case where the front leg 144 includes the spherical bearing mechanism 147, this is not limiting. Instead of the spherical bearing mechanism 147, the front leg 144 may include a support mechanism (V-groove bearing mechanism) 147', as shown in FIG. 5, which includes a rod-shaped member 154' with a hemispherical underside and a block member 152' with a V-shaped groove. The V-groove bearing mechanism 147' shown in FIG. 5 allows the rod-shaped member 154' to move in the Y-axis direction and rotate in the θx, θy, and θz directions relative to the block member 152'. In this case, the discharge belt conveyor 14 can be easily installed by simply placing the rod-shaped member 154' in the V-groove of the block member 152' fixed on the iron plate 130. The V-groove of the block member 152' may be a U-groove.

[0042] (Regarding input belt conveyor 12) Returning to Figure 1, the input belt conveyor 12 is connected near its -X end to the soil mixing device 10. Figure 6(a) shows a perspective view of the input belt conveyor 12, the soil mixing device 10, and a portion of the discharge belt conveyor 14, and Figure 6(b) shows the input belt conveyor 12, the soil mixing device 10, and a portion of the discharge belt conveyor 14 as viewed from the +Y direction.

[0043] The input belt conveyor 12 comprises a conveyor body 202, front legs 204, and a tail stand 206.

[0044] The conveyor main body 202 has a belt that transports the additives supplied from the powder feeder 24 (see FIG. 1), the construction generated soil (hereinafter referred to as the first base material) supplied from the weighing belt conveyor 16 (see FIG. 1), and the construction generated soil (hereinafter referred to as the second base material) supplied from the weighing belt conveyor 18 (see FIG. 1) to the soil mixing apparatus 10. At the end of the -X side of the conveyor main body 202, a head chute 203 is provided as a guide that guides each base material transported by the conveyor main body 202 to the inlet member 111 (see FIG. 2) of the soil mixing apparatus 10. That is, in this embodiment, the feeding belt conveyor 12 corresponds to the second unit, and the transportation of construction generated soil performed by the feeding belt conveyor 12 corresponds to the second process. Also, in this embodiment, the conveyor main body 202 corresponds to the main body, and the tail frame 206 corresponds to the platform.

[0045] Front legs 204 are provided near the -X end of the bottom surface of conveyor body 202. As shown in Fig. 6(a), front legs 204 are provided on the bottom surface of conveyor body 202 via Z rotation shaft 210. Strictly speaking, Z rotation shaft 210 rotates around a direction tilted from the Z axis, but for convenience of explanation, it will be described as rotating around the Z axis (θz direction).

[0046] Figure 7(a) shows an enlarged view of the vicinity of the front leg 204. As shown in Figure 7(a), the front leg 204 has a first member 212 extending in the Y-axis direction, a pair of legs 214A and 214B provided at both ends of the first member 212 in the Y-axis direction, and a cylindrical member 216 provided so as to connect the legs 214A and 214B.

[0047] A pair of holding members 170A, 170B are provided on the base 102 of the soil mixing apparatus 10, and a cylindrical member 216 engages at two points in U-shaped grooves 103 of the holding members 170A, 170B, thereby connecting the front leg 204 to the base 102 (soil mixing apparatus 10). The front leg 204 has a degree of freedom in the rotational direction (θy) around the Y-axis relative to the base 102, as a result of the cylindrical member 216 engaging with the U-shaped groove 103. That is, in this embodiment, the front leg 204 corresponds to the second connection part.

[0048] 6(a) and 6(b), the tail mount 206 has a rectangular frame portion 220, a plurality of legs 222 (six in FIG. 6(a)) provided on the -Z side of the rectangular frame portion 220, a spherical bearing mechanism 224 provided on a beam portion 221 (see FIG. 7(b)) of the rectangular frame portion 220, a link mechanism 225 provided between the spherical bearing mechanism 224 and the conveyor main body 202, and three support mechanisms 226A, 226B, and 226C provided on the rectangular frame portion 220. That is, in this embodiment, the spherical bearing mechanism 224 corresponds to the first connection portion, and the link mechanism 225 corresponds to the variable mechanism.

[0049] The legs 222 each have a screw-type height adjustment mechanism, and by adjusting the height using the height adjustment mechanism, the tail rack 206 can be placed on the ground without any rattle.

[0050] The spherical bearing mechanism 224 has the same configuration as the aforementioned spherical bearing mechanism 147. The spherical bearing mechanism 224 allows the conveyor body 202 to change its position relative to the rectangular frame portion 220 in a rotational direction around the X axis (θx), a rotational direction around the Y axis (θy), and a rotational direction around the Z axis (θz).

[0051] The link mechanism 225 functions as a variable mechanism that varies the distance between the spherical bearing mechanism 224 and the front leg 204 (or the Z rotation shaft 210), and as a translation mechanism that slides the conveyor body 202 in the longitudinal direction. The link mechanism 225 is made of a highly rigid metallic material, and as can be seen from FIG. 7(b), which is an enlarged schematic view of the vicinity of the link mechanism 225, the link mechanism 225 includes a rod-shaped member 228 connected to the spherical bearing mechanism 224 and a pair of link members 229 (the link member on the -Y side is not shown) provided at both ends of the rod-shaped member 228. The upper end of the link member 229 is rotatably attached to the conveyor body 202 via a rotation shaft 229a. The link mechanism 225 and the spherical bearing mechanism 224 allow the conveyor body 202 to move in the X-axis direction relative to the tail frame 206. The link mechanism 225 bears part of the load of the conveyor body 202.

[0052] 6(a) and 6(b), the support mechanism 226A has two pillar members 236A and 236B fixed to the rectangular frame portion 220 and extending in the Z-axis direction, and the pillar members 236A and 236B support another belt conveyor (the weighing belt conveyor 16 in this embodiment). A U-shaped groove 234 is formed at the upper end of the pillar members 236A and 236B of the support mechanism 226A (see FIG. 13). As will be described in detail later, the support mechanism 226A supports the other belt conveyor (the weighing belt conveyor 16 in this embodiment) in this U-shaped groove 234.

[0053] As shown in FIG. 6(b), the support mechanism 226B has two pillar members 238A and 238B fixed to the rectangular frame portion 220 and extending in the Z-axis direction. U-shaped grooves 240 are formed at the upper ends of the pillar members 238A and 238B (see FIG. 16). The support mechanism 226B supports another belt conveyor (the weighing belt conveyor 18 in this embodiment) in the U-shaped grooves 240. As will be described in detail later, the support mechanisms 226A and 226B are provided at positions equidistant from the spherical bearing mechanism 224. That is, in this embodiment, the feeding belt conveyor 12 corresponds to the first unit, and the weighing belt conveyor 16 and the weighing conveyor 18 correspond to the second unit. Furthermore, in this embodiment, the tail frame 206 corresponds to the first section, the position of the spherical bearing mechanism 224 corresponds to the first position, and the conveyor body 202 corresponds to the second section.

[0054] Although the support mechanism 226C differs from the support mechanisms 226A and 226B in terms of installation position and installation orientation, it is similar to the support mechanisms 226A and 226B. The support mechanism 226C can support other belt conveyors in the same manner as the support mechanisms 226A and 226B. Note that in the mixing system 100 of FIG. 1, the support mechanism 226C does not support other belt conveyors, but the support mechanism 226C can be made to support other belt conveyors as necessary. Furthermore, at least one of the support mechanisms 226A, 226B, and 226C may support a belt conveyor, or all of the support mechanisms 226A, 226B, and 226C may not support belt conveyors.

[0055] In this embodiment, with the soil mixing apparatus 10 and discharge belt conveyor 14 installed at the construction site, the input belt conveyor 12 is lifted by a crane or the like and installed from above at the position shown in FIG. 6(a). Then, the cylindrical members 216 of the front legs 204 of the input belt conveyor 12 are engaged with the U-shaped grooves 103 (two locations) of the holding members 170A, 170B (see FIG. 7(a)) provided on the base 102 of the soil mixing apparatus 10. In addition, the height adjustment mechanism of the legs 222 is adjusted so that the tail base 206 does not wobble. In the input belt conveyor 12, as shown in FIG. 21, the front legs 204 have a degree of freedom in the θy direction relative to the base 102, and the conveyor body 202 has a degree of freedom in the θz direction relative to the front legs 204. In addition, the conveyor body 202 has degrees of freedom in the θx, θy, and θz directions relative to the rectangular frame portion 220. This allows the posture of the conveyor body 202 around the X axis to be determined so as to follow the posture of the base 102. Furthermore, even if the rectangular frame portion 220 is tilted with respect to the horizontal plane, the tilt can be absorbed by the spherical bearing mechanism 224.

[0056] In this embodiment, as shown in FIGS. 6(a) and 6(b), the front legs 204 of the loading belt conveyor 12 are shorter than when they are installed directly on the ground, and during transportation, the height of the part where the front legs 204 are located and the height of the part where the spherical bearing mechanism 224 is located are approximately the same. As such, the overall height of the loading belt conveyor 12 during transportation is low, making it easy to load onto a truck and transport. Furthermore, in this embodiment, since the overall height is approximately the same, the loading belt conveyor 12 can stand on its own when the loading belt conveyor 12 and the soil mixing device 10 are disengaged. As a result, when the loading belt conveyor 12 is stored, there is no need for auxiliary equipment to help the loading belt conveyor 12 stand on its own.

[0057] Next, the installation method of the input belt conveyor 12 will be described in more detail.

[0058] In this embodiment, the head chute 203 is rotatable around the Y axis around a rotation shaft 250 shown in FIGS. 6(a) and 6(b).

[0059] Figures 8(a) to 9(c) schematically show the procedure for installing the input belt conveyor 12. Note that in Figures 8(a) to 9(c), only the stand 102, holding member 170A, and input port member 111 of the soil mixing apparatus 10 are shown. Furthermore, when the input belt conveyor 12 is installed, the discharge belt conveyor 14 is already installed near the soil mixing apparatus 10, but in Figures 8(a) to 9(c), the discharge belt conveyor 14 is not shown to simplify the drawings.

[0060] First, as shown in Fig. 8(a), the feeding belt conveyor 12 is transported and placed near the soil mixing device 10 using a crane 360. At this time, the head chute 203 is in the same state as when the mixing system 100 is operating (the first position shown in Fig. 6(a)).

[0061] Next, as shown in FIG. 8(b), the head chute 203 is flipped up (a second position different from the first position). That is, in this embodiment, the head chute 203 corresponds to the specific part. Then, as shown in FIG. 8(c), the input belt conveyor 12 is lifted up by the crane 360. At this time, the lengths of the wires connecting the input belt conveyor 12 and the crane 360 ​​are set to be approximately the same. This allows the input belt conveyor 12 to be lifted up approximately horizontally.

[0062] Next, as shown in Figure 9(a), the cylindrical members 216 of the front legs 204 of the feeding belt conveyor 12 are engaged with the holding members 170A, 170B (U-groove 103) provided on the frame 102, while the tail frame 206 side of the feeding belt conveyor 12 is lowered. This allows the tail frame 206 to land on the ground, as shown in Figure 9(b). Note that when installing the feeding belt conveyor 12, the tail frame 206 may be first landed on the ground and then the front legs 204 may be engaged with the holding members 170A, 170B.

[0063] Then, as shown in FIG. 9(c), the head chute 203 is returned to its original position (the first posture that is the same as that in FIG. 8(a)), thereby completing the installation of the feeding belt conveyor 12.

[0064] Here, the reason why the head chute 203 is raised when the loading belt conveyor 12 is installed as shown in FIGS. 8(b) to 9(b) is that if the loading belt conveyor 12 is not raised and is transported in a substantially horizontally suspended state and brought closer to the sediment mixing apparatus 10, there is a risk of contact (interference) between the head chute 203 and a part of the sediment mixing apparatus 10 (e.g., the inlet member 111), as shown in FIG. 10(a). To avoid this contact, it is possible to make the lengths of the wires connecting the loading belt conveyor 12 and the crane 360 ​​different so that the loading belt conveyor 12 is transported with the entire loading belt conveyor 12 tilted, as shown in FIG. 10(b). However, transporting the loading belt conveyor 12 with the entire loading belt conveyor 12 tilted makes stable transport difficult. In contrast, by making the head chute 203 capable of being raised as in this embodiment, the loading belt conveyor 12 can be transported with stability.

[0065] In this embodiment, the feeding belt conveyor 12 is provided with a link mechanism 225, which makes it easier to set up the feeding belt conveyor 12. This will be described with reference to Figures 11(a) to 11(f). Figures 11(a) to 11(f) show an example in which the tail platform 206 is first placed on the ground, and then the front legs 204 are engaged with the holding members 170A and 170B.

[0066] 11(a) to 11(c) show a state in which the tail platform 206 is first grounded when installing the input belt conveyor 12. Of these, it is assumed that the position of the input belt conveyor 12 shown in Fig. 11(a) is the normal position (neutral position), the position of the input belt conveyor 12 shown in Fig. 11(b) is a position behind the normal position, and the position of the input belt conveyor 12 shown in Fig. 11(c) is a position ahead of the normal position.

[0067] When the front legs 204 of the input belt conveyor 12 are engaged with the holding members 170A and 170B in the state where it is positioned in the normal position as shown in Figure 11(a), the state becomes as shown in Figure 11(d). In this case, the link mechanism 225 hardly changes from the state shown in Figure 11(a).

[0068] On the other hand, when the front legs 204 of the input belt conveyor 12 are positioned further rearward than the normal position as shown in Figure 11(b), if an attempt is made to engage the holding members 170A, 170B, the conveyor body 202 of the input belt conveyor 12 moves forward as shown in Figure 11(e). In this case, the action of the link mechanism 225 prevents the tail frame 206 from shifting position (no drag occurs), so the input belt conveyor 12 can be installed without applying undue load to the tail frame 206, etc.

[0069] Furthermore, when the front legs 204 of the input belt conveyor 12 are positioned further forward than the normal position as shown in Figure 11(c), if an attempt is made to engage the holding members 170A, 170B, the conveyor body 202 of the input belt conveyor 12 moves backward as shown in Figure 11(f). In this case, the action of the link mechanism 225 prevents the tail frame 206 from shifting position (no drag occurs), so the input belt conveyor 12 can be installed without applying undue load to the tail frame 206, etc.

[0070] In addition, if the input belt conveyor 12 is not provided with a link mechanism 225, and the tail platform 206 is placed on the ground in a position other than the normal position as shown in Figures 11(b) and 11(c), when the front legs 204 are engaged with the holding members 170A and 170B, the conveyor body 202 cannot move forward or backward as shown in Figures 11(e) and 11(f), and there is a risk that the tail platform 206 will be dragged.

[0071] (Regarding weighing belt conveyor 16) Returning to FIG. 1, the weighing belt conveyor 16 has a function of feeding the first base material supplied from the apron feeder 20 onto the feeding belt conveyor 12. FIG. 12(a) shows the weighing belt conveyor 16 as viewed from the +X direction. FIG. 12(b) is a perspective view schematically showing the weighing belt conveyor 16, the weighing belt conveyor 18, and the feeding belt conveyor 12. As shown in FIGS. 12(a) and 12(b), the weighing belt conveyor 16 has a conveyor body 302, a front leg 304, a tail frame 306, a spherical bearing mechanism 308, and a link mechanism 309.

[0072] As shown in Figure 12(a), at the +Y side end of the conveyor body 302, a head chute 303 is provided as a guide to guide the first base material transported by the conveyor body 302 to the input belt conveyor 12. The first base material supplied from the apron feeder 20 at the -Y side end of the conveyor body 302 is transported in the +Y direction by the conveyor body 302 and supplied from the head chute 303 to the input belt conveyor 12. A sensor is provided in the conveyor body 302 to measure the weight of the first base material, and the input speed (the supply speed of the first base material) of the feeder body of the apron feeder 20 described below is controlled according to the weight of the first base material.

[0073] FIG. 13 shows an enlarged view of the vicinity of front leg 304. As shown in FIG. 13, front leg 304 has a pair of legs 314A, 314B and a cylindrical member 316 as an axis member provided to connect legs 314A, 314B. Cylindrical member 316 engages with U-shaped grooves 234 of pillar members 236A, 236B of support mechanism 226A, thereby connecting front leg 304 (weighing belt conveyor 16) to feeding belt conveyor 12. As shown in FIG. 12(b), front leg 304 is provided on the bottom surface of conveyor body 302 via Z rotation shaft 310. Strictly speaking, Z rotation shaft 310 rotates in a direction inclined from the Z axis, but for convenience of explanation, it will be described as rotating around the Z axis (θz direction).

[0074] 12(a), the tail frame 306 has a configuration similar to that of the tail frame 206 of the aforementioned feeding belt conveyor 12. However, the tail frame 306 is not provided with a support mechanism such as the support mechanisms 226A to 226C provided in the tail frame 206.

[0075] The spherical bearing mechanism 308 has a configuration similar to that of the spherical bearing mechanism 224 of the input belt conveyor 12. That is, the spherical bearing mechanism 308 allows the conveyor body 302 to change in position relative to the tail frame 306 in the rotational direction about the X axis (θx), the Y axis (θy), and the Z axis (θz).

[0076] The link mechanism 309 has the same configuration as the link mechanism 225 of the input belt conveyor 12. That is, the link mechanism 309 is made of a highly rigid metallic material, and functions as a variable mechanism that changes the distance between the spherical bearing mechanism 308 and the front leg 304, and as a translation mechanism that slides the conveyor body 302 in the longitudinal direction. The link mechanism 309 and the spherical bearing mechanism 308 allow the conveyor body 302 to move in the Y-axis direction relative to the tail frame 306.

[0077] In this embodiment, with the input belt conveyor 12 installed at the construction site, the weighing belt conveyor 16 is lifted by a crane or the like and installed from above at the position shown in FIG. 12(a). Then, as shown in FIG. 13, the columnar members 316 of the front legs 304 of the weighing belt conveyor 16 are engaged with the U-shaped grooves 234 of the pillar members 236A and 236B of the support mechanism 226A. In this manner, the weighing belt conveyor 16 can be installed while connected to the input belt conveyor 12. Since the weighing belt conveyor 16 has the same configuration as the input belt conveyor 12, as described with reference to FIGS. 11(a) to 11(f), the tail frame 306 is not dragged when the weighing belt conveyor 16 is installed, and undue load on each part of the weighing belt conveyor 16 can be reduced.

[0078] 21, in the weighing belt conveyor 16, the front legs 304 have a degree of freedom in the θx direction relative to the support mechanism 226A, and the conveyor body 302 has a degree of freedom in the θz direction relative to the front legs 304. In addition, the conveyor body 302 has degrees of freedom in the θx, θy, and θz directions relative to the tail frame 306. This allows the posture of the conveyor body 302 around the Y axis to be determined so as to follow the posture of the support mechanism 226A. Furthermore, even if the upper surface of the tail frame 306 is inclined with respect to the horizontal plane, the inclination can be absorbed by the spherical bearing mechanism 308. That is, in this embodiment, the front legs 304 correspond to the second connecting part.

[0079] In addition, in this embodiment, since the heights of the front legs 304 and the tail frame 306 are approximately the same, the weighing belt conveyor 16 can stand on its own when the engagement between the weighing belt conveyor 16 and the feeding belt conveyor 12 is released. As a result, when storing the weighing belt conveyor 16, there is no need for auxiliary devices to help the weighing belt conveyor 16 stand on its own.

[0080] 8(b), it is preferable that the head chute 303 of the weighing belt conveyor 16 is also capable of being lifted up, which makes the installation work easier since the head chute 303 does not get in the way when installing the weighing belt conveyor 16.

[0081] (About Apron Feeder 20) Returning to FIG. 1, the apron feeder 20 is installed on an iron plate 420 laid on the ground. FIG. 14(a) is a perspective view showing the apron feeder as viewed from the +Y side. The apron feeder 20 comprises a feeder body 502 and a support stand 504 that supports the feeder body 502. The feeder body 502 has the function of feeding the first base material onto the weighing belt conveyor 16. Note that the iron plate 420 does not have to be laid.

[0082] In this embodiment, the support base 504 can be folded as shown in Fig. 14(b) when transporting the apron feeder 20. This makes it easier to transport the apron feeder 20 and also reduces the number of trucks required for transportation.

[0083] (Regarding weighing belt conveyor 18) Returning to FIG. 1, the weighing belt conveyor 18 has the function of feeding the second base material supplied from the apron feeder 22 onto the feeding belt conveyor 12. FIG. 15 shows the weighing belt conveyor 18 as viewed from the +X direction. FIG. 16 also shows an enlarged view of the vicinity of the front leg 404. As shown in FIG. 15, the weighing belt conveyor 18 has a conveyor body 402, a front leg 404, a tail frame 406, a spherical bearing mechanism 408, and a link mechanism 409, and has the same configuration as the weighing belt conveyor 16 described above.

[0084] As shown in FIG. 15, at the end on the +Y side of the conveyor body 402, a head chute 403 is provided as a guide for guiding the second base material transported by the conveyor body 402 to the input belt conveyor 12.

[0085] As shown in Figure 15, the front legs 404 have cylindrical members 416 as shaft members. The front legs 404 are attached to the bottom surface of the conveyor body 402 via Z rotation shafts 410, as shown in Figure 12(b).

[0086] The tail frame 406 , the spherical bearing mechanism 408 , and the link mechanism 409 have the same configuration as the tail frame 306 , the spherical bearing mechanism 308 , and the link mechanism 309 of the weighing belt conveyor 16 .

[0087] In this embodiment, with the loading belt conveyor 12 installed at the construction site, the weighing belt conveyor 18 is lifted by a crane or the like and installed from above at the position shown in FIG. 15 . Then, as shown in FIG. 16 , the columnar members 416 of the front legs 404 of the weighing belt conveyor 18 are engaged with the U-shaped grooves 240 (two locations) of the pillar members 238A and 238B of the support mechanism 226B. In this manner, the weighing belt conveyor 18 can be installed while connected to the loading belt conveyor 12. Since the weighing belt conveyor 18 has the same configuration as the loading belt conveyor 12, as described with reference to FIGS. 11( a ) to 11 ( f ), the tail frame 406 is not dragged when installing the weighing belt conveyor 18, and undue load on each part of the weighing belt conveyor 18 can be reduced. The weighing belt conveyors 16 and 18 may be installed in any order. That is, the weighing belt conveyor 16 may be installed first, or the weighing belt conveyor 18 may be installed first.

[0088] 21, in the weighing belt conveyor 18, the front legs 404 have a degree of freedom in the θx direction relative to the support mechanism 226B, and the conveyor body 402 has a degree of freedom in the θz direction relative to the front legs 404. Furthermore, the conveyor body 402 has degrees of freedom in the θx, θy, and θz directions relative to the tail frame 406. This allows the orientation of the conveyor body 402 around the Y axis to be determined so as to follow the orientation of the support mechanism 226B. Furthermore, even if the upper surface of the tail frame 406 is inclined with respect to the horizontal plane, the inclination can be absorbed by the spherical bearing mechanism 408. That is, in this embodiment, the front legs 404 correspond to the second connecting part.

[0089] In this embodiment, the weighing belt conveyor 16 and the weighing belt conveyor 18 have the same configuration, so if at least one of the weighing belt conveyor 16 and the weighing belt conveyor 18 is provided as a spare machine within the construction site, it can be easily replaced if the weighing belt conveyor 16 breaks down, resulting in excellent maintainability.

[0090] Figure 17 is a schematic diagram showing the weighing belt conveyor 16, the weighing belt conveyor 18, and the feeding belt conveyor 12 as viewed from the +Z direction. Note that Figure 17 shows a state (hereinafter referred to as the reference state) in which the conveying direction of the feeding belt conveyor 12 coincides with the X-axis direction when viewed from above, and the conveying directions of the weighing belt conveyors 16 and 18 coincide with the Y-axis direction when viewed from above. In this reference state, the feeding range of the first base material from the weighing belt conveyor 16 is included in the receiving range of the first base material by the feeding belt conveyor 12 (the range in which the first base material can be received without spilling). Furthermore, in the reference state, the feeding range of the second base material from the weighing belt conveyor 18 is included in the receiving range of the second base material by the feeding belt conveyor 12.

[0091] 17, when the distance between the weighing belt conveyor 16 and the spherical bearing mechanism 224 is D1 and the distance between the weighing belt conveyor 18 and the spherical bearing mechanism 224 is D2, there is a relationship between D1 and D2 such that D1=D2. That is, in this embodiment, the distance D1 corresponds to the distance between one side of the second unit and the first position, and the distance D2 corresponds to the distance between the other side of the second unit and the first position. The reason for setting D1=D2 will be explained below.

[0092] FIG. 18(a) is a schematic diagram illustrating a case where the installation direction (longitudinal direction) of the conveyor body 202 is tilted with respect to the X-axis when viewed from above when the feeding belt conveyor 12 is installed. In this case, the conveyor body 202 is tilted with respect to the spherical bearing mechanism 224. Therefore, the amount of deviation between the feeding range and the receiving range due to the tilt of the conveyor body 202 varies depending on the distance from the spherical bearing mechanism 224. That is, the greater the distance, the greater the deviation, and the smaller the distance, the smaller the deviation. In this embodiment, by matching the distances D1 and D2, the amount of deviation between the feeding range of the weighing belt conveyor 16 and the receiving range of the feeding belt conveyor 12 can be matched with the amount of deviation between the feeding range of the weighing belt conveyor 18 and the receiving range of the feeding belt conveyor 12. This prevents the amount of deviation in either direction from becoming too large, and minimizes both deviations.

[0093] 18(b) is a schematic diagram showing a case where the tail frame 206 is tilted when the feeding belt conveyor 12 is installed, and the installation direction (longitudinal direction) of the conveyor bodies 302, 402 of the weighing belt conveyors 16, 18 is tilted with respect to the Y-axis when viewed from above. Even in this case, by matching the distances D1 and D2, it is possible to match the amount of deviation between the feeding range of the weighing belt conveyor 16 and the receiving range of the feeding belt conveyor 12 and the amount of deviation between the feeding range of the weighing belt conveyor 18 and the receiving range of the feeding belt conveyor 12. This prevents the amount of deviation in either direction from becoming too large, and makes it possible to minimize both deviations.

[0094] Furthermore, impacts applied when installing the weighing belt conveyors 16 and 18 may cause a misalignment in their relative positions with the feeding belt conveyor 12. FIG. 19(a) shows a state in which the weighing belt conveyor 18 is installed first. From this state, if an impact in the +Y direction is applied to the tail frame 206 when installing the weighing belt conveyor 16, the tail frame 206 rotates in the horizontal plane as shown in FIG. 19(b). Almost simultaneously with FIG. 19(b), the conveyor body 202 of the feeding belt conveyor 12 rotates around the Z rotation axis 210, resulting in the state shown in FIG. 20. Even in such a case, by matching the distances D1 and D2, the amount of misalignment between the feeding range of the weighing belt conveyor 16 and the receiving range of the feeding belt conveyor 12 can be matched with the amount of misalignment between the feeding range of the weighing belt conveyor 18 and the receiving range of the feeding belt conveyor 12. This prevents the amount of misalignment from becoming too large, and minimizes both misalignments.

[0095] In this way, in this embodiment, by matching the distances D1 and D2, the amount of deviation between the input range and receiving range of the first and second base materials can be minimized, thereby preventing the first and second base materials from spilling.

[0096] Note that the distances D1 and D2 do not necessarily have to be the same. That is, the distance between one weighing belt conveyor and the spherical bearing mechanism 224 may be determined based on the distance between the other weighing belt conveyor and the spherical bearing mechanism 224 so that the amount of deviation falls within an allowable range.

[0097] (About Apron Feeder 22) Returning to Fig. 1, the apron feeder 22 is installed on an iron plate 422 laid on the ground. The apron feeder 22 has the same configuration as the above-mentioned apron feeder 20. Note that the iron plate 422 does not necessarily have to be laid.

[0098] In this embodiment, as described above, each unit (soil mixing device 10, input belt conveyor 12, weighing belt conveyors 16, 18, discharge belt conveyor 14) can be connected, and even if the ground is inclined, the spherical bearing mechanisms 224, 308, 408, 147 can absorb the inclination of the ground. Therefore, there is no need to mark the ground or iron plate when installing each unit. Furthermore, by connecting each belt conveyor and soil mixing device 10, it is less likely that the positions will shift, so there is no need to fix them to the ground or iron plate.

[0099] In this embodiment, the front legs 204, 304, 404 of each of the belt conveyors 12, 16, 18 are pre-installed on the conveyor body 202, 302, 402. Conventionally, when installing each belt conveyor, the front legs are set up on the ground, and then the conveyor body is brought in from above onto the front legs and connected to the conveyor body. However, in this embodiment, such work is not necessary, which reduces the effort required for installation.

[0100] As described above in detail, according to this embodiment, the mixing system 100 includes the soil mixing device 10 (first unit) that crushes and granulates construction generated soil (first process), and the input belt conveyor 12 (second unit) that transports the construction generated soil (second process). The input belt conveyor 12 includes a conveyor body 202 that transports the soil, and a tail frame 206 that supports the conveyor body 202. The tail frame 206 is connected to the conveyor body 202 at a spherical bearing mechanism 224 (first connection portion), and the conveyor body 202 is engaged with the soil mixing device 10 at a front leg 204 (second connection portion). A link mechanism 225 having a metal high-rigidity portion that changes the distance between the spherical bearing mechanism 224 and the front leg 204 is provided between the tail frame 206 and the conveyor body 202. In this manner, in this embodiment, by providing the link mechanism 225, as described using Figures 11(a) to 11(f), even if the position of the input belt conveyor 12 is slightly shifted forward or backward (see Figures 11(b) and 11(c)) from the correct position (see Figure 11(a)) when installing the input belt conveyor 12, the input belt conveyor 12 can be installed without dragging the tail frame 206. This allows for easy installation without applying an excessive load to the input belt conveyor 12.

[0101] The mixing system 100 of this embodiment also includes a feed belt conveyor 12 (first unit) that transports construction waste soil (first process) and a weighing belt conveyor 16 (18) (second unit) that transports base material (second process). The weighing belt conveyor 16 (18) also includes a conveyor body 302 (402) that transports the soil and a tail frame 306 (406) that supports the conveyor body 302 (402). The tail frame 306 (406) is connected to the conveyor body 302 (402) by a spherical bearing mechanism 308 (408), and the conveyor body 302 (402) is engaged with the feed belt conveyor 12 by its front leg 304 (404). Furthermore, a link mechanism 309 (409) having a highly rigid metal part that changes the distance between the spherical bearing mechanism 308 (408) and the front leg 304 (404) is provided between the tail frame 306 (406) and the conveyor main body 302 (402). As described above, in this embodiment, the weighing belt conveyor 16 (18) is also provided with a link mechanism 309 (409), so that the weighing belt conveyor 16 (18) can be installed without dragging the tail frame 306 (406), similar to the feeding belt conveyor 12. This allows for easy installation without placing an excessive load on the weighing belt conveyor 16 (18).

[0102] Furthermore, in this embodiment, the two weighing belt conveyors 16, 18 are each engaged with the tail mount 206 of the input belt conveyor 12 at the front legs 304, 404, and the distance between one of the weighing belt conveyors 16, 18 and the spherical bearing mechanism 224 is determined based on the distance between the other of the weighing belt conveyors 16, 18 and the spherical bearing mechanism 224. This makes it possible to minimize the deviation between the input ranges of the weighing belt conveyors 16, 18 and the receiving range of the input belt conveyor 12, even if the input belt conveyors 12 or the weighing belt conveyors 16, 18 are tilted from the reference state (FIG. 17).

[0103] Furthermore, in this embodiment, when installing the feeding belt conveyor 12, the head chute 303 is raised (FIG. 8(b)), and then the feeding and installation are performed. This prevents the head chute 303 from getting in the way during transportation and installation. Furthermore, as shown in FIGS. 8(a) to 8(c), when transporting the feeding belt conveyor 12, the lengths of multiple cables can be made the same, which prevents the feeding belt conveyor 12 from becoming unstable during transportation.

[0104] This embodiment also includes a soil mixing apparatus 10 (first unit) and a discharge belt conveyor 14 (second unit) that transports (second process) the crushed and mixed objects to be treated that have been discharged from the soil mixing apparatus 10. The rotary bearing mechanism 146 that supports the conveyor body 142 of the discharge belt conveyor 14 has a shaft member 245 extending in the Y-axis direction and a block member 246 that has a V-groove (or U-groove) formed therein and supports the shaft member 245 in a state that allows it to rotate about the Y-axis. As a result, in this embodiment, if the block member 246 is accurately positioned, it is possible to position the shaft member 245 in the X-axis direction, Z-axis direction, θx direction, and θz direction simply by placing the shaft member 245 on the block member 246.

[0105] In addition, in this embodiment, the block member 246 is fixed onto the iron plate 130 on which the soil mixing device 10 is installed, so that it is possible to prevent the block member 246 from shifting position. Furthermore, because the block member 246 can be fixed onto the iron plate 130 before the discharge belt conveyor 14 is installed, there is no need to reach under the conveyor body 142 to tighten the bolts after the discharge belt conveyor 14 is installed. This simplifies the installation work.

[0106] In this embodiment, the discharge belt conveyor 14 has front legs 144 that support the conveyor body 142. The front legs 144 connect the leg body 145 to the iron plate 130 and are equipped with a spherical bearing mechanism 147 that allows the leg body 145 to tilt relative to the iron plate 130. As a result, in this embodiment, simply by placing the discharge belt conveyor 14 on the iron plate 130, the posture of the discharge belt conveyor 14 can be maintained in an appropriate state with the iron plate as the reference.

[0107] Furthermore, in this embodiment, the number of degrees of freedom of rotation of the cylindrical member 216 of the loading belt conveyor 12 engaged with the soil mixing device 10 is different from the number of degrees of freedom of rotation of the spherical bearing mechanism 224. As a result, when the loading belt conveyor 12 is connected to the soil mixing device 10, the loading belt conveyor 12 can be stably installed while accommodating the inclination of the installation surface. The same applies to the weighing belt conveyors 16, 18 engaged with the loading belt conveyor 12. Therefore, when the weighing belt conveyors 16, 18 are connected to the loading belt conveyor 12, the weighing belt conveyors 16, 18 can be stably installed while accommodating the shape (inclination, etc.) of the installation surface. Therefore, when installing each belt conveyor 12, 16, 18 at a construction site, it is not necessary to lay steel plates on the ground. Furthermore, marking (marking out) is not required to position each belt conveyor, and since each device is connected, fixtures for fixing each device to the ground are not required. These features can reduce or simplify the effort required to install the mixing system 100 at a construction site.

[0108] Furthermore, according to this embodiment, the spherical bearing mechanisms 224, 308, 408 located near the ground have more degrees of freedom regarding rotation than the portions (cylindrical members 216, 316, 416) of the belt conveyors 12, 16, 18 that are connected to other devices. This allows the belt conveyors 12, 16, 18 to be stably connected to other devices while reliably absorbing the shape of the ground (such as a slope).

[0109] Furthermore, according to this embodiment, the columnar members 216, 316, 416 engage with other devices at two points (U-grooves 103, 234, 240), and the spherical bearing mechanism 224 abuts on the surface on which it is installed at one point. As a result, the columnar member 216 that is connected to other devices engages at two points, ensuring stability during connection.

[0110] Furthermore, in this embodiment, when connecting the belt conveyors 12, 16, 18 to other devices, the attitude of the other devices is maintained in a predetermined state, and the spherical bearing mechanisms 224, 308, 408 are grounded on the ground side, and the cylindrical members 216, 316, 416 are engaged with the U-grooves 103, 234, 240. This allows the belt conveyors 12, 16, 18 to be installed in an appropriate state in accordance with the attitude of the other devices and the shape of the ground side (such as the slope).

[0111] Furthermore, in this embodiment, the belt conveyors 12, 16, and 18 are not fixed with angles or the like, so the time required to remove the mixing system 100 from the construction site can be shortened. As a result, even if the mixing system 100 is removed when it is known that a typhoon is approaching, for example, the removal of the mixing system 100 can be completed before the typhoon hits.

[0112] In the above embodiment, the link mechanism 225 is provided between the spherical bearing mechanism 224 and the conveyor body 202 in the feeding belt conveyor 12, but this is not limited to this. For example, the link mechanism may be provided between the conveyor body 202 and the soil mixing device 10 (for example, between the front legs 204 and the conveyor body 202). Even in this case, the same effects as those of the above embodiment (FIGS. 11(a) to 11(f)) can be achieved. This is not limited to the feeding belt conveyor 12, but the same applies to the link mechanisms of the weighing belt conveyors 16 and 18.

[0113] In the above embodiment, when the head chute 303 of the feeding belt conveyor 12 gets in the way during transportation or installation, the feeding belt conveyor 12 is transported and installed with the head chute 303 in a raised state (a state in which the position is changed from the first position to the second position). However, this is not limited to this, and when there is a part (specific part) on the feeding belt conveyor 12 that gets in the way during transportation other than the head chute 303, the feeding belt conveyor 12 may be installed with the position changed so that the specific part does not get in the way. The same applies to the weighing belt conveyors 16, 18.

[0114] In the above embodiment, a case has been described in which no iron plate is laid under the belt conveyors 12, 16, 18, but this is not limiting and an iron plate may be laid under the belt conveyors.

[0115] In the above embodiment, the present invention has been described as being applied to the mixing system 100, but the present invention is not limited thereto. For example, the present invention may be applied to units (such as soil washing equipment and conveyors) of a soil washing plant, such as that described in Japanese Patent Application Laid-Open No. 2007-175585. The present invention may also be applied to units (such as crushers and conveyors) of a plant that crushes concrete or gravel. The present invention may also be applied to a sorting plant, such as that described in Japanese Patent Application Laid-Open No. 2006-780. The present invention may also be applied to a continuous conveyor for transporting tunnel excavation surplus soil, such as that described in Japanese Patent Application Laid-Open No. 2000-213287. The present invention may also be applied to a conveyor installed between offshore facilities and onshore facilities. In this case, the conveyor can be easily installed between the facilities, and the conveyor can follow the oscillations of the offshore facilities due to tidal changes, waves, etc. Furthermore, this embodiment can also be applied to a discharge conveyor for shaft excavation surplus soil as described in JP 2020-179973 A. This makes it possible to easily add discharge conveyors when it is desired to increase the number of discharge conveyors to suit the site.

[0116] The above-described embodiment is a preferred example of the present invention, but the present invention is not limited to this and can be modified in various ways without departing from the spirit of the present invention. [Explanation of symbols]

[0117] 10. Soil mixing device (1st unit) 12 Input belt conveyor (2nd unit or 1st unit) 14 Discharge belt conveyor (second unit) 16,18 Weighing belt conveyor (second unit) 113 Chute (entrance) 130 Iron Plate (Base) 142 Conveyor body (main body) 144 Front leg (second support part) 145 Script body (leg) 147 Spherical bearing mechanism (connection part) 147' V-groove bearing mechanism (support mechanism) 202 Conveyor body (main body, second part) 204 Front landing gear (second connection part) 206 Tail stand (base, first part) 224 Spherical bearing mechanism (first connection part) 225 Link mechanism (variable mechanism) 245 Shaft member (part of first support part) 246 Block member (support member, part of first support part) 302, 402 Conveyor body (main body) 303 Head Shoot (Specific Parts) 306, 406 tail mount (base) 308, 408 Spherical bearing mechanism (first connection part) 304, 404 Nose landing gear (second connection part) 309, 409 Link mechanism (variable mechanism)

Claims

1. a first unit that performs a first process on the object to be processed; a second unit that performs a second step on the processing object, the second unit has a main body that performs the second step and a base that supports the main body, the base portion is connected to the main body portion at a first connection portion, and the main body portion is engaged with the first unit at a second connection portion; A construction device in which a variable mechanism having a high-rigidity metal part that changes the distance between the first connection part and the second connection part is provided at least either between the base part and the main body part or between the main body part and the first unit.

2. The construction device according to claim 1 , wherein the variable mechanism bears a portion of the load of the main body.

3. The construction device according to claim 1 , wherein the first unit and the second unit are stationary and placed at fixed positions.

4. The variable mechanism has a link mechanism that connects a spherical bearing provided in the first connection portion to the main body portion and allows a change in the positional relationship between the spherical bearing and the main body portion. Construction equipment according to any one of claims 1 to 3.

5. two of the second units; the first unit has a first part that is placed on a ground surface on which the base is placed, and a second part that is connected to the first part in a state in which a change in posture based on a first position of the first part is permitted, and that performs a first process on the processing object; 4. The construction device according to claim 1, wherein each of the two second units is engaged with the first portion of the first unit at the second connection portion, and the distance between one of the second units and the first position is determined based on the distance between the other of the second units and the first position.

6. 6. The construction device according to claim 5, wherein when the first portion of the first unit is placed on the ground surface, the second portion is allowed to change its position in a rotational direction within the ground surface, based on the first position.

7. A construction device as described in any one of claims 1 to 3, wherein a specific part used in the second step is provided near the second connection portion of the main body part of the second unit, and a first attitude of the specific part relative to the main body part when performing the second step is different from a second attitude of the specific part relative to the main body part when engaging the second unit with the first unit.

8. a first unit having a processing device that performs a first step on a processing object and a base that supports the processing device; a second unit including a main body that performs a second step on the processing object and a first support that supports the main body; The first support portion is a construction device having an axial member extending in a uniaxial direction within a horizontal plane of the base, and a support member supporting the axial member so that it can rotate around the uniaxial direction.

9. 9. The construction device of claim 8, wherein the support member is secured to the base to limit rotation of the body in a horizontal plane.

10. The support member has a V-shaped or U-shaped groove formed therein, The construction device according to claim 8 , wherein the shaft member is held by the groove of the support member.

11. the second unit has a second support portion that supports the main body portion, 9. The construction device according to claim 8, wherein the second support portion comprises a leg portion extending from the main body portion toward the base, and a connecting portion connecting the leg portion to the base and allowing the leg portion to tilt relative to the base.

12. 12. The construction device according to claim 11, wherein the connecting portion is one of a spherical bearing mechanism and a support mechanism having a V-shaped or U-shaped groove for supporting the leg portion on the base.

13. The processing device has an outlet portion for discharging the object to be processed, The construction device according to any one of claims 8 to 12, wherein the main body has an inlet surrounding the outlet for introducing the material to be treated.

Images