JP4400830B2 - Modifier addition equipment - Google Patents

Description

  The present invention relates to a modifier addition device used to add a modifier to earth and sand when improving soil quality such as improvement of construction generated soil and ground improvement.

  In general, earth and sand having a high water content such as river sediment, lake bottom and dredged soil have a very low supporting capacity, and of course cannot be used as it is for the ground of a building structure. Therefore, in soil improvement such as improvement of construction generated soil and ground improvement, cement and lime and other modifiers are mixed with the above earth and sand to improve the soil (reducing moisture content, improving cement solidification and water shielding, etc.). In this way, efforts are made to strengthen support.

  In addition, as a device for reforming earth and sand, a sand and sand supply device that quantitatively supplies the earth and sand carried from the outside of the device onto a conveyor such as a belt feeder, and a modifier that adds a modifier to the quantitatively supplied soil and sand. There is an apparatus that includes an adding device and a mixing device that mixes the earth and sand and the modifier, and the mixed earth and sand and the modifier are carried out of the apparatus.

  And, in the earth and sand reforming apparatus as described above, as the conventional modifier addition apparatus, the modifier is simply supplied to the upper side of the earth and sand on the conveyor, or the upstream earth and sand with respect to the conveying direction by the conveyor A supply unit, a reformer supply unit, and a sediment supply unit on the downstream side are arranged in this order, and after supplying the modifier to the upper side of the sediment supplied from the upstream side, further sediment is supplied on the downstream side, There was one in which the modifier was sandwiched between them.

  By the way, in the conventional modifier addition apparatus as described above, when the earth and sand on the conveyor are viewed in cross section, a small amount of the modifier is present on the upper surface or inside of the earth and sand. For this reason, when the sand and the modifying material are put into a mixing apparatus having a residence time of several seconds, the sand that was in the vicinity of the modifying material at the time of transportation becomes rich in the modifying material, and the portion away from the modifying material at the time of transportation. In the soil and sand, the modifier was poorly mixed, and there was a problem that the distribution of the modifier in the sand and sand that passed through the mixing device was likely to vary. In addition, if a mixing device such as a batch type mixer that can ensure sufficient residence time is used, the distribution of the modifier in the earth and sand will be improved to some extent. In addition, there are problems such as being unable to cope with continuous soil reforming.

  The present invention has been made in view of the above-described conventional situation, and it is possible to sufficiently disperse and add the modifier to the earth and sand conveyed by the conveyor, thereby increasing the degree of mixing of the earth and the modifier. It aims at providing the modifier addition apparatus which can be performed.

A modifier addition device according to the present invention is a device for adding a modifier to earth and sand conveyed by a conveyor such as a belt feeder, and a rotating body that rubs the earth and sand on the conveyor as it rotates. A reformer supply mechanism for spraying the modifier on the sand on the conveyor, the reformer supply mechanism having a supply section for spraying the modifier on the sand on the conveyor, and the rotating body is a conveyor. It is rotationally driven around a vertical axis with respect to the upper surface and has a substantially cylindrical shape surrounding the outside of the supply unit, and is provided with a plurality of claw portions for pouring earth and sand at the tip, and the earth is removed by the rotating body. It is characterized by adding modifiers to the soil while dispersing.

Moreover, modifying material addition device according to the present invention, as a more preferred embodiment, the scraper for scraping off the adhering soil of the inner peripheral surface and the sliding contact with the inner peripheral surface to the outer peripheral surface and the outer peripheral surface of the rotating body The conveyor is characterized in that it has a flat conveying surface.

Furthermore, the modifier addition apparatus according to the present invention is an apparatus for adding a modifier to the earth and sand conveyed by the conveyor, and a rotating body that rubs the earth and sand on the conveyor as it rotates, and a conveyor Provided with a reformer supply mechanism for spraying the reformer on the upper earth and sand, the rotating body includes a support member that is driven to rotate about a vertical axis with respect to the upper surface of the conveyor, and a large number of flexible rod-shaped members. and, the rod-like member is disposed at predetermined intervals along the radial direction and the circumferential direction of rotation relative to the support member, and is provided with a support member suspended state, sediment while plow the soil by the rotating member in the modifier characterized that you dispersing additives, further, as a more preferred embodiment, wherein the rod-like member is a wire rope, further conveyor, such as a substantially V-shaped or a substantially U-shaped Conveying surface with a concave cross section Together is to a large number of rod-like members of the rotating body, in correspondence with the conveying surface shape of the conveyor is characterized in that from the rotational center are gradually reduces the droop length outward.

  Furthermore, the reformer addition apparatus according to the present invention, as a more preferred embodiment, quantitatively supplies the earth and sand carried from the outside of the apparatus onto the supply conveyor, and mixes the earth and the reformer and carries it out of the apparatus. The earth and sand reforming apparatus is characterized in that a rotating body and a reforming material supply mechanism are arranged with respect to a supply conveyor.

  According to the reformer addition apparatus of the present invention, by adopting the rotating body and the reformer supply mechanism, the modifier is uniformly dispersed and added to the earth and sand conveyed by the conveyor, and the earth and sand are reformed. The degree of mixing with the material can be greatly increased, and the distribution of the modifying material in the earth and sand can be made uniform even when the earth and sand modification such as the viscous soil which is difficult to crush is performed. In addition, the amount of the modifier added can be minimized as the degree of mixing increases.

  Further, according to the modifier addition device of the present invention, the rotating body and the modifier supply section are arranged concentrically, and the movement of the earth and sand by the conveyor and the spreading of the earth and sand by the claw portion of the rotor. And the radial dispersion of the reforming material by the supply unit are performed at the same time, and these operations can be combined to sufficiently disperse and add the modifying material to the earth and sand. The degree of mixing can be further increased.

  Furthermore, according to the modifier addition device of the present invention, the scraper that slides and contacts the inner peripheral surface and the outer peripheral surface of the rotating body and scrapes the adhered soil on the inner peripheral surface and the outer peripheral surface is adopted. It is possible to prevent a problem that the earth and sand adhering to the body solidify, and to prevent the earth and sand and the modifier from being lost in the apparatus.

  Furthermore, according to the reformer addition apparatus of the present invention, by adopting a conveyor having a flat conveying surface, the distance between the upper surface of the conveyor and the rotating rotating body can be minimized and uniform. Thus, the modifier can be dispersed and added uniformly by sufficient penetration of the entire earth and sand.

  Furthermore, according to the modifying material adding apparatus of the present invention, by adopting a rotating body including a support member and a large number of flexible rod-shaped members, the soil to be transported is a soft one having a high moisture content (mud) ), However, the modifier can be dispersed and added uniformly to the soil to greatly increase the degree of mixing between the sediment and the modifier, and foreign materials such as rocks are mixed in the sediment. Even in such a case, it is possible to prevent a situation in which the flexible rod-like member is easily deformed to hinder the transport of earth and sand.

  Furthermore, according to the modifier addition device of the present invention, the wire rope is adopted as the rod-shaped member, so that the rod-shaped member can be obtained relatively inexpensively and easily, and the apparatus can be simplified and the manufacturing cost can be reduced. It can contribute to reduction.

  Furthermore, according to the modifier addition apparatus of the present invention, the adoption of a conveyor having a concave cross-section conveying surface makes it particularly suitable for conveying soft earth (mud) with a high water content ratio. By setting the hanging length of a large number of rod-shaped members of the rotating body corresponding to the conveyor surface shape of the conveyor, the distance between the upper surface of the conveyor and the rotating rotating body can be minimized and made uniform. Then, the above-mentioned earth and sand can be sufficiently mixed and the modifier can be uniformly dispersed and added.

  Furthermore, according to the modifier addition apparatus of the present invention, by using it in the sediment modifier, it is possible to greatly improve the quality of the modified sediment that is carried out and, of course, continuous sediment modification. In addition, since it is possible to obtain a sufficient degree of mixing of the earth and sand and the modifier with only the apparatus, depending on the quality of the earth and sand, the mixing apparatus that is a subsequent process of the apparatus can be simplified. It is possible to reduce the cost and reduce the mixing equipment, and in addition to increasing the efficiency of the sediment reforming, it is possible to contribute to simplification of the structure of the sediment reforming apparatus and cost reduction.

  FIG. 1 and FIG. 2 are diagrams for explaining an embodiment of the modifier addition device of the present invention. The illustrated modifier addition apparatus is an apparatus for adding modifier B to earth and sand A which is conveyed by a conveyor (flat conveyor) C having a flat conveying surface such as a belt feeder, etc. Rotating body 1 for scrubbing A and a reformer supply mechanism 2 for spraying a reforming material (for example, cement) B on earth and sand A on a conveyor. A modifier B is dispersedly added to A.

  More specifically, a gantry 3 is installed on the upper side of the conveyor C so as to straddle it, and the two rotators 1 are held by the gantry 3. Each rotating body 1 has a substantially cylindrical shape with the upper part closed, and is provided with a plurality of claw parts 4 for pouring earth and sand at the lower end part, and in a state where the axial direction is vertical, It is held at a height that forms an appropriate gap between the tip (lower end) of the section 4 and the upper surface of the conveyor. The rotating body 1 of this embodiment includes four blade-like claw portions 4 at 90 ° intervals.

  A hollow shaft body 5 is coaxially connected to the upper part of each rotating body 1. The shaft body 5 is rotatably held with respect to the gantry 3 while passing through the gantry 3 up and down, and a pulley 6 is fixed to the upper end portion. On the other hand, the gantry 3 is provided with a rotating body driving motor 7, and a belt 9 is wound around a pulley 8 fixed to an output shaft of the motor 7 and a pulley 6 of each shaft body 5. Thereby, each rotary body 2 is rotationally driven by the motor 7 around the vertical axis with respect to the upper surface of the conveyor.

  In addition, as shown in FIG.1 (b), the two rotary bodies 1 are arrange | positioned right and left with respect to the conveyance direction of the conveyor C so that it can respond to the whole earth and sand conveyed. It is shifted in the transport direction. The two rotating bodies 1 are rotationally driven in opposite directions so that the outer peripheral surface on the upstream side moves toward the conveyor center.

  The reforming material supply mechanism 2 generally includes a service tank 10 for the reforming material B, a screw conveyor 11, and two chutes 12. The service tank 10 is installed on a beam 13 installed on the upper side of the gantry 3, stores the reforming material B, and quantitatively continuously supplies the reforming material B from the lower part.

  The screw conveyor 11 includes a cylindrical body 14, a screw 15 accommodated in the cylindrical body 14, and a motor 16 that rotationally drives the screw 15. The axial direction of the cylindrical body 14 is horizontal, and the central portion of the cylindrical body 14 is placed in the service tank. 10 is connected to the lower end. Further, the screw 15 has spirals opposite to each other with the central portion as a boundary, and conveys the reforming material B supplied from the service tank 10 to both ends as it rotates.

  Each chute 12 has its axial direction perpendicular to each other and has its respective upper end connected to both ends of the cylindrical body 14 and has passed through the inside of the hollow shaft 5 in the rotating body 1. The arm 17 fixed to the gantry 3 is held in a state. Further, the lower end of each chute 12 has a tapered portion 18 which is located inside the rotating body 1 and whose diameter gradually increases downward, and a conical body 19 is concentrically arranged inside the tapered portion 18. An annular supply path 20 is formed between the tapered portion 18 and the cone 19.

  That is, in this embodiment, in the reforming material supply mechanism 2, the taper portion 18 and the conical body 19 constituting the lower end portion of the chute 12 are supply portions that scatter the reforming material B radially on the earth and sand A on the conveyor. And the above-mentioned rotary body 1 is provided in the state surrounding this supply part.

  Further, the reformer addition apparatus is provided with scrapers 21 and 22 that are in sliding contact with the inner peripheral surface and the outer peripheral surface of the rotating body 1 at the lower end portion of the chute 12 and the gantry 3, respectively. The adhesion soil on the surface and the outer peripheral surface is scraped off, and the gantry 3 is provided with a scattering prevention plate 23 that hangs down on both the left and right sides of the conveyor C. Is prevented from scattering.

  The reformer addition apparatus having the above-described configuration is continuously quantified on the conveyor C by setting the conveying speed of the conveyor C to, for example, about 10 to 30 cm / second, and the rotational speed of the rotating body 1 to, for example, about 100 to 1000 rpm. The earth and sand A that is supplied and transported is punched by the claw portion 4 of the rotating rotator 1, and at the same time, the earth and sand A is modified from the supply portion (taper portion 18 and cone 19) of the reformer supply mechanism 2. Scatter material B radially. In addition, the conveyance speed of the conveyor C and the rotation speed of the rotary body 1 are suitably adjusted according to soil quality etc.

  At this time, in the apparatus, since the supply part of the reforming material supply mechanism 2 and the rotating body 1 are arranged concentrically inside and outside, the reforming material B is supplied into the groove of the earth and sand A that has been sown. At the same time, the movement of the earth and sand A by the conveyor C, the pouring of the earth and sand A by the claw part 4 of the rotating body 1, and the radial spraying of the modifier B by the supply part are performed simultaneously. In combination, the earth and sand A and the modifier B are agitated, and the modifier B is uniformly dispersed and added to the earth and sand A.

  In addition, since the apparatus uses the conveyor C having a flat conveyance surface and the rotating body 1 having a substantially cylindrical shape, the distance between the upper surface of the conveyor and the rotating body 1 can be easily minimized and uniform. In this way, the modifier B is uniformly dispersed and added to the entire earth and sand.

  In this way, in the apparatus, the degree of mixing of the earth and sand A and the modifying material B can be greatly increased, and even when earth and sand modification such as clayey soil that is difficult to disintegrate is performed, the earth and sand A The distribution of the modifier B can be made uniform, and the amount of modifier B added can be minimized as the degree of mixing increases. Furthermore, in this apparatus, the scrapers 21 and 22 that are in sliding contact with the inner and outer peripheral surfaces of the rotating body 1 are used to quickly scrape off the adhering soil on the inner and outer peripheral surfaces of the rotating body 1 so that the adhering soil is solidified. In addition to preventing such troubles, the loss of earth and sand A and modifier B in the apparatus is prevented.

Here, the said modifier addition apparatus is applicable to the earth and sand reforming apparatus shown, for example in FIG.
The earth and sand reforming apparatus shown in FIG. 4 is a system in which the earth and sand A carried from the outside of the apparatus is quantitatively supplied onto the supply conveyor C1, and the earth and sand A and the modifying material B are mixed and continuously carried out of the apparatus. In general, the earth and sand supply device 31 that supplies the earth and sand A introduced from the top to the supply conveyor C1, the mixing device 32 that mixes the earth and sand A and the modifier B, and the mixed earth and sand A and the modifier B Are provided with a carry-out conveyor 33 for carrying out the modified earth and sand and an auxiliary conveyor 34. In this earth and sand reforming apparatus, the modifier addition apparatus is disposed between the earth and sand supply apparatus 31 and the mixing apparatus 32 with respect to the supply conveyor C1 that conveys the quantitatively supplied earth and sand.

  The supply conveyor C1 is a conveyor having a flat conveying surface such as a belt feeder, and corresponds to the conveyor C of the modifier addition device shown in FIGS. The supply conveyor C1, the carry-out conveyor 33, and the auxiliary conveyor 34 are arranged so as to partially overlap each other with their respective drive shafts parallel to each other. Further, the supply conveyor C1 is located on the side opposite to the conveyance direction (left side in FIG. 4) of the mixing device 32 with respect to the conveyance direction of the carry-out conveyor 33 which is the right direction in FIG. Is located on the upper side of the mixing device 32 and on the side in the conveying direction (right side in FIG. 4).

  In the supply conveyor C1, in addition to the driving wheel 35A at one end and the driven wheel 35B at the other end, a second driven wheel 35C is provided on the lower side, and an inclined portion Cs is formed between the driven wheels 35B and 35C. The inclined portion Cs, which is a part of the conveyor C1, faces the one side of the mixing device 32. Further, the auxiliary conveyor 34 is provided with a lower driven wheel 36C and a pair of holding wheels 36D, 36E in addition to the driving wheel 36A at one end and the driven wheel 36B at the other end, and has a substantially T shape. One side of the horizontal portion Ch of the conveyor 34 faces the upper side of the mixing device 32, and the vertical portion Cv faces the other side of the mixing device 32.

  The carry-out conveyor 33 is located below the supply conveyor C1, the auxiliary conveyor 34, and the mixing device 32, and the carry-out side extends to the outside of the device. On the other hand, a scraper that scrapes the earth and sand A adhering during mixing by the mixing device 32 onto the carry-out conveyor 33 at the lower portion of the supply conveyor C1 and the lower portion of the horizontal portion Ch of the auxiliary conveyor 34 on the anti-mixing device side. 37 and 38 are provided. As shown in the figure, when another conveyor 39 is arranged on the carry-out side of the carry-out conveyor 33, a scraper 40 is also provided below the carry-out conveyor 33.

  The mixing device 32 includes a rotation shaft 41 that is driven to rotate by a motor (not shown), and a plurality of stirring members 42 that are arranged at a plurality of locations along the circumferential direction and the axial direction of the rotation shaft 41 and rotate together with the rotation shaft 41. In this embodiment, a chain is used as the stirring member 42. Further, the mixing device 32 includes two sets of the rotation shaft 41 and the stirring member 42, and is arranged in parallel so that the axis of each rotation shaft 41 is parallel to the drive shaft of each conveyor C1, 33, 34. At the same time, the earth and sand A are driven to rotate in the opposite directions so that the earth and sand A move downward.

  In addition, the earth and sand reforming apparatus is provided with outer walls 43 shown in part in FIG. 4 on both sides of the conveyors C1, 33, and 34 and the mixing device 32. The mixing device 32 includes the conveyors C1, 33, 34, and It is located in a substantially closed space surrounded by the outer wall 43. In addition to the above configuration, the earth and sand reforming apparatus is provided with a control device that controls the conveyors C1, 33, and 34, the earth and sand supply apparatus 31, the modifier addition apparatus, and the mixing apparatus 32, although illustration is omitted. The operation and speed of the drive unit can be arbitrarily set as required.

  The above-mentioned earth and sand reforming apparatus continuously and quantitatively supplies the earth and sand A from the earth and sand supply apparatus 31 to the supply conveyor C1, and the reformer addition apparatus reforms the earth and sand A being conveyed as described above. The material B is continuously supplied in a fixed amount, and the modifying material B is uniformly dispersed and added to the earth and sand A, and the earth and sand A and the modifying material B are charged into the mixing device 32. In the mixing device 32, the rotating shaft 42 is rotated at about 500 to 1000 rpm, and the earth and sand A and the modifier B that have fallen from the supply conveyor C1 are collided with the stirring member 42 that rotates at high speed, and the earth and sand A and the reforming material are collided. The material B is finely dispersed and both are further mixed.

At this time, in the mixing device 32, the sand and sand A including the modifier B is naturally scattered at the time of mixing. In the earth and sand reforming device, each so as to surround the rotating circumferential surface of the mixing device 32. Since the conveyors C1, 33, and 34 are arranged, the scattered earth and sand A adheres to the supply conveyor C1 and the auxiliary conveyor 34, and the earth and sand A that adheres to these are scraped off onto the carry-out conveyor 33 by the scrapers 37 and 38. Therefore, the loss of the earth and sand A and the modifier B in the apparatus can be extremely reduced.

  As described above, the above earth and sand reforming apparatus realizes uniform reforming of the earth and sand A by thoroughly mixing a certain amount of earth and sand A and a certain amount of the modifying material B, and also improves from the recovery of the earth and sand A. A series of steps up to carrying out the sediment can be carried out continuously by one device. In particular, the modifier addition device uniformly disperses the modifier B in the sediment A in the previous step of the mixing device 32. Therefore, even when the earth and sand A such as clayey soil having a high water content is reformed, a sufficient degree of mixing of the earth and sand A and the modifier B can be obtained by the modifier adding device and the mixing device 32. Moreover, even when the mixing device 32 having a relatively short residence time of the earth and sand A is used as in the illustrated example, a sufficient degree of mixing of the earth and sand A and the modifier B can be obtained.

  Moreover, since the modifier addition apparatus of the present invention can obtain a sufficient degree of mixing between the earth and sand A and the modifier B, the mixing device 32 and the auxiliary conveyor in the earth and sand reformer depending on the quality of the earth and sand. 34 can be simplified or eliminated, and in addition to increasing the efficiency of sediment modification, the structure of the sediment reformer can be simplified and the cost can be reduced.

  FIG. 3 is a diagram showing an example of the shape of the claw portion of the rotating body 1 in the modifier addition device of the present invention. The claw portion 4A shown in FIG. 3A has a plate shape curved along the arc of the rotating body 1, and is equivalent to the claw portion 4 shown in FIG. 1 and FIG. The claw portion 4B shown in FIG. 3B has a flat plate shape and is arranged in a state substantially orthogonal to the rotation direction. The claw portion 4C shown in FIG. 3C has a flat plate shape and is arranged in a state inclined with respect to the rotation direction.

  The claw portion 4D shown in FIG. 3 (d) has a rod shape. The claw portion 4E shown in FIG. 3 (e) has a plate shape having a substantially airfoil cross section, and is arranged in such a manner that the end portion with the smaller wall thickness is directed in the rotational direction and follows the rotational direction. is there. The claw portion 4F shown in FIG. 3 (f) has a plate shape having a substantially airfoil cross section, and is arranged in an inclined state with respect to the rotation direction with the end portion having the smaller wall thickness facing the rotation direction. It is what.

  Each said nail | claw part 4A-4F can be selected according to the quality etc. of the earth and sand to modify | reform, Of course, it can also be made into shapes other than the example of illustration, and the number can also be changed.

  5-10 is a figure explaining the other Example of the modifier addition apparatus of this invention. In this embodiment, the conveyor C2 has a conveyance surface having a concave cross section, and the rotating body 51 is rotatably driven around a vertical axis with respect to the upper surface of the conveyor, and a plurality of flexible members. The rod-shaped member 53 is provided.

  More specifically, the conveyor C2 shown in FIGS. 5 (a), 5 (b) and 6 includes a pair of left and right guide rollers 54, 54 inclined downward toward the center line on the upper side thereof. A conveying surface having a concave cross section is formed by attaching a belt to the guide roller 54. In addition, a frame 55 is installed at a predetermined position of the conveyor C2 so as to straddle the conveyor C2, and a lifting frame 57 including a rotating body 51 and a motor 56 that is a rotation driving source is provided on the frame 55. Is retained.

  The frame 55 includes two support columns 59 and 59 each having a vertical guide hole 58 and vertical screw shafts 60 and 60 parallel to the support columns 59 on both the left and right sides of the conveyor C2. On the other hand, the lifting frame 57 includes an engaging portion 61 that engages with each guide hole 58 and is guided up and down, and a nut portion 62 that is rotatably engaged with each screw shaft 60. The operation handle 63 provided on the nut portion 62 is rotated to move up and down, whereby the distance between the upper surface of the conveyor C2 and the rotating body 51 can be adjusted.

  The lift frame 57 is provided with a motor 56 with the output shaft facing downward, and the rotating body 51 composed of the support member 52 and the rod-shaped member 53 is mounted on the output shaft of the motor 56. .

  As shown in FIGS. 7 (a) and 7 (b), the support member 52 constituting the rotating body 51 is a cross-shaped member having a connecting portion (hole) 64 to the output shaft at the center. A plurality of attachment holes 65 for attaching the rod-shaped member 53 to each extension portion, and a plurality of fixing bolts 66A and nuts 66B (see FIG. 8) penetrating into each attachment hole 65 from the side surface of the extension portion. They are provided at predetermined intervals.

  On the other hand, each rod-like member 53 constituting the rotating body 51 is a wire rope that is relatively inexpensive and easily available. As shown in FIG. 8, the upper end portion is inserted into the mounting hole 65 and the fixing bolt 66A is tightened. Thus, it is fixed to the support member 52, and in the operation of replacement or length adjustment, the restraint can be easily released only by operating the fixing bolt 66A. In the illustrated example, the central rod-like member 52 is bent into a U shape and attached to the support member 52.

  The rod-like members 53 are attached to the support member 52 having a cross shape as described above, so that the rod-like members 53 are arranged at predetermined intervals along the rotation radius direction and the rotation circumferential direction of the support member 52 and are suspended from the support member 52. At this time, as shown in FIG. 9, as a whole, the drooping length gradually decreases from the center of rotation toward the outside, corresponding to the conveying surface shape of the conveyor C2, that is, the concave shape of the cross section. Each length or the attachment position with respect to the support member 52 is adjusted so that the front-end | tip part of each rod-shaped member 53 may contact | connect the same conical surface.

  The rotating body 51 having the above-described configuration can be applied to the earth and sand reforming apparatus shown in FIG. The basic structure of the earth and sand reforming apparatus shown in the figure is the same as that described in the previous embodiment (see FIG. 4), and detailed description thereof is omitted. Is a conveyor C2 having a transport surface having a concave cross section, and the reformer supply mechanism 2 constituting the reformer addition apparatus is installed on the conveyor C2 for supply. On the downstream side (right side in FIG. 10), a rotating body 51 that also constitutes a modifier addition device is installed together with a frame 55.

  At this time, the reformer supply mechanism 2 is provided with a reformer service tank 10, a screw conveyor 11, a chute 12, a tapered portion 18 as a supply unit, and a cone 19 as in the previous embodiment. There is a difference from the previous embodiment in that the rotating body and its drive system are not provided outside the supply section. In addition, you may use the thing provided with the rotary body similarly to the previous Example.

  The modifier addition device provided with the rotating body 51 and the earth and sand reformer provided with the modifier addition device can obtain the same operation and effect as those of the previous embodiment, and have a concave cross section. Since the conveyor (supply conveyor) C2 having a surface is used, it is suitable for conveying soft earth and sand (mud) having a high water content ratio, such as earth and sand excavated by construction such as earth pressure shield method.

  Further, by using the rotating body 51 provided with the support member 52 and a large number of flexible rod-shaped members 53, even if the earth and sand have a high water content ratio, a modifier (cement or polymer type) is used. The agglomerated material) can be uniformly dispersed and added to greatly increase the degree of mixing of the earth and sand and the modifier, and even when foreign matter such as rocks is mixed into the earth and sand, it has flexibility. It is possible to prevent such a situation that the material is easily deformed and hinders the transport of earth and sand.

  Furthermore, according to the above-described modifier addition device, the drooping length of the large number of rod-shaped members 53 of the rotating body 51 is set in correspondence with the shape of the conveying surface of the conveyor C2 having a concave cross section. Therefore, the distance between the rotating body 51 and the rotating body 51 can be minimized and uniform, and thus, the modifier can be uniformly dispersed and added to the entire earth and sand.

  The modifying material addition apparatus of the present invention is not limited to the details of the above-described embodiments, and the shape and number of each component are appropriately determined within the scope not departing from the gist of the present invention. Can be changed. For example, in the above-described embodiment, the case where the rotating body is driven to rotate around the vertical axis has been described. However, depending on the configuration of the reformer supply mechanism, the rotating body may be rotated about the horizontal axis or the inclined axis. It is also possible to combine the rotating bodies.

  Further, the configuration of the rotating body is not limited to the above-described embodiments. For example, when the rotating body is composed of a supporting member and a rod-shaped member, the shape of the supporting member and the material of the rod-shaped member can be changed as appropriate. It is. The rotating body may have a configuration in which a large number of rod-shaped members are arranged along the rotation radius direction and the rotation circumferential direction with respect to, for example, a disk-shaped support member. If it is placed, the agitation performance of the earth and sand may be lowered. For example, as described in the embodiment, a suitable interval is provided for the arrangement of the rod-shaped members in the rotational circumferential direction using a cross-shaped support member or the like. Is more desirable.

It is a figure which shows one Example of the modifier addition apparatus of this invention, Comprising: Sectional drawing (a) with an enlarged view explaining the principal part of the said apparatus, The perspective view (b) which shows a rotary body and a conveyor, It is a perspective view (c) of a rotary body. It is sectional drawing which shows the whole modifier addition apparatus. It is plane | planar explanatory drawing (a)-(f) which shows the example of a shape of the nail | claw part of the rotary body in the modifier addition apparatus of this invention. It is sectional explanatory drawing which shows the earth and sand reforming apparatus using the modifier addition apparatus of this invention. It is the conveyance direction side view (a) explaining the other Example of the modifier addition apparatus of this invention, and a conveyance direction front view (b). It is a perspective view explaining a conveyor and a rotary body. It is the top view (a) and side view (b) explaining the support member of a rotary body. It is sectional drawing explaining the attachment point of the rod-shaped member with respect to a supporting member. It is a side view of a rotary body. It is sectional explanatory drawing which shows the earth and sand reforming apparatus to which the modifier addition apparatus shown in FIG. 5 is applied.

Explanation of symbols

A earth and sand B modifier C conveyor C1 supply conveyor C2 conveyor (supply conveyor)
DESCRIPTION OF SYMBOLS 1 Rotating body 2 Reformer supply mechanism 4 Claw part 18 Tapered part (supply part)
19 Cone (feeding section)
21 22 Scraper 51 Rotating body 52 Support member 53 Bar-shaped member

Claims (7)

A device for adding a modifying material to the earth and sand conveyed by the conveyor, and a rotating body that rubs the earth and sand on the conveyor as it rotates, and a modifying material that spreads the modifying material on the earth and sand on the conveyor A supply mechanism,
The reforming material supply mechanism includes a supply unit that scatters the reforming material radially on the earth and sand on the conveyor, and the rotating body is driven to rotate about a vertical axis with respect to the upper surface of the conveyor and surrounds the outside of the supply unit. It has a cylindrical shape and is equipped with a plurality of claw parts for digging sand and sand at the tip,
A modifier addition device characterized in that the modifier is dispersed and added to the earth and sand while the earth and sand is being squeezed by a rotating body. The reformer addition apparatus according to claim 1 , further comprising a scraper that slides into contact with an inner peripheral surface and an outer peripheral surface of the rotating body and scrapes off adhering soil on the inner peripheral surface and the outer peripheral surface. The reformer addition apparatus according to claim 1 or 2 , wherein the conveyor has a flat conveying surface. A device for adding a modifying material to the earth and sand conveyed by the conveyor, and a rotating body that rubs the earth and sand on the conveyor as it rotates, and a modifying material that spreads the modifying material on the earth and sand on the conveyor A supply mechanism,
The rotating body includes a supporting member that is driven to rotate about a vertical axis with respect to the upper surface of the conveyor, and a large number of flexible rod-shaped members. The rod-shaped member rotates in the radial direction and rotates with respect to the supporting member. Arranged at predetermined intervals along the circumferential direction and provided in a suspended state from the support member ,
Modifying material addition device, characterized that you dispersion added modifier to sediment while plow the soil by the rotating body. The reformer addition apparatus according to claim 4 , wherein the rod-shaped member is a wire rope. The conveyor has a conveyance surface having a concave cross section, and a large number of rod-shaped members of the rotating body gradually decrease the length of drooping from the center of rotation toward the outside, corresponding to the shape of the conveyance surface of the conveyor. The reformer addition apparatus according to claim 4 or 5 , characterized in that. In the earth and sand reformer that supplies the fixed amount of earth and sand brought in from the outside of the apparatus onto the supply conveyor and mixes and removes the earth and the modifier to the outside of the apparatus, the rotating body and the modifier are supplied to the supply conveyor. The mechanism addition apparatus according to any one of claims 1 to 6, wherein a mechanism is arranged.

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