A conveying device for large concrete products and a method for installing large concrete products using the conveying path of the conveying device.

Abstract

To improve the stability of transporting large concrete products and to enhance the ease of installation of said concrete products. [Solution] The conveying device 10 is provided with a guide rail 12 with a substantially U-shaped cross-section in the longitudinal direction of a concrete conveying path 11, and a large concrete product 40 is loaded onto a chill roller unit 20 that moves along the conveying path and transported to the installation site. The chill roller unit 20 is equipped with a support part (23) that connects at least four chill roller bodies 21 arranged in the front, back, left, and right directions, and a guide roller 29 in the substantially center of the support member 23 that is perpendicular to the guide rail, and the support member 23 that is perpendicular to the guide rail is made expandable and contractible within the left-right width range of the conveying path 11 (Claim 1). Since the support member 23 is made expandable and contractible within the left-right width range of the conveying path 11, it is possible to avoid cases where the chill roller runs on the same track and cuts into the conveying path and creates grooves (recesses), as in conventional devices, and the stability of the chill roller unit 20's movement can be improved.

Description

Technical Field

[0001] The present invention relates to a conveying device for large concrete products and a method for installing the conveyed concrete products.

Background Art

[0002] As devices for transporting large concrete products (such as concrete secondary products) to the installation site, for example, Patent Document 1 and Patent Document 2 are known.

[0003] As shown in FIG. 7, a guide rail 2 having a substantially U-shaped cross section is provided in the longitudinal direction of a concrete conveying path 1. As shown in FIGS. 8 and 9, a large concrete product 8 is mounted on a tilting roller unit 5 that moves in the longitudinal direction of the conveying path 1 and is transported to the installation site (Patent Document 2). In FIG. 9, the symbol A is the front (the direction in which the concrete product 8 is transported), and the symbol B is the rear (the direction of the starting point from which the concrete product 8 starts to move).

[0004] The tilting roller unit 5 includes at least four tilting roller bodies 6 on the front, rear, left, and right. The tilting roller bodies 6 are connected via a support member 7.

[0005] At a substantially central portion of the support member 7, a guide roller 7-2 for moving the tilting roller unit 5 in the longitudinal direction of the conveying path 1 along the guide rail 2 is provided.

[0006] The tilting roller body 6 includes a roller material (not shown) that moves on the left and right of the guide rail 2.

[0007] With such a configuration, concrete secondary products and large concrete products such as water channels, side ditches, and retaining walls can be transported, and the concrete products can be installed at the transport destination.

Prior Art Documents

Patent Documents

[0009] The problems are the stability of the transport device's movement and the poor workability when installing large concrete products.

[0010] The problem with the stability of the transport device's operation lies in the fact that the concrete transport path 1 is worn down by the load of heavy, large concrete products, causing the running portion of the chill roller body 6 to wear away (due to insufficient hardening, etc.), making it difficult to transport the concrete products smoothly.

[0011] As will be explained later, the problem with the workability of installing large concrete products lies in the difficulty of removing the screw components used for installation, which extends the construction period.

[0012] Therefore, the objective of the present invention is to improve the stability of transporting large concrete products and to facilitate the removal of screw members from installed large concrete products, thereby improving the workability of installing concrete products. [Means for solving the problem]

[0013] To achieve the above objective, the present invention provides a transport device that provides a concrete transport path with a guide rail having a substantially U-shaped cross-section in the longitudinal direction, and transports a large concrete product to the installation site by loading it onto a chill roller unit that moves along the transport path in the longitudinal direction, wherein the chill roller unit comprises a support member that connects at least four chill roller bodies arranged in the front, back, left, and right directions, and a guide roller located substantially in the center of the support member that is perpendicular to the guide rail, which moves the chill roller unit along the guide rail in the longitudinal direction of the transport path, and the support member that is perpendicular to the guide rail is expandable and contractible within the width of the transport path (Claim 1).

[0014] According to the configuration of the present invention, the support member, which is perpendicular to the guide rail, can be extended and retracted within the width of the transport path. This avoids the case in conventional devices where the chill roller runs along the same track and creates grooves (recesses) in the transport path, thereby improving the stability of the chill roller unit's movement.

[0015] Claim 2 is a configuration in which a hard covering plate is placed on the upper surface of the conveying path through which the chill roller body moves.

[0016] To solve the problem of grooves forming in the concrete transport path due to damage caused by the chill rollers running along the same track, the transport device according to claim 1 has a support member that is extendable and retractable to prevent the chill rollers from running along the same track.

[0017] However, when applying a structure that allows the support members to be extended or retracted, costs are incurred for the configuration and maintenance of the extendable structure.

[0018] In contrast, by using a structure in which a rigid covering plate is placed on the upper surface of the transport path, it is possible to prevent damage (grooving) to the concrete transport path without having to expand or contract the support members.

[0019] Depending on the manufacturing and placement costs of the covering plate material, it is desirable to select the appropriate method by comparing the short-term and long-term costs of using expandable / contractable support members versus installing the covering plate material on the upper surface of the transport path.

[0020] Claim 3 is a method for installing a large concrete product on a concrete transport path according to Claim 1 or Claim 2.

[0021] This method involves transporting a large concrete product to the installation site, positioning its bottom surface on the transport path via jacks to create a gap, inserting screws into pre-drilled screw holes in the bottom surface, and providing upward-facing projections on the washers or screw heads of the bushes (washers and nuts) located on the upper surface of the screw holes in the large concrete product, while simultaneously filling the gaps with concrete material.

[0022] Since the tip of the screw is fixed by the filling concrete material, when removing the screw, the filling concrete material may solidify and the screw may not rotate. Therefore, an upward protrusion is provided on the nut or the screw head, and by hitting the protrusion with an appropriate tool (for example, a hammer), an impact can be applied to the screw to rotate the screw.

Effect of the Invention

[0023] According to the conveying device of the present invention, the stability of conveying large concrete products can be improved. Further, when installing a concrete product on the conveying path described in claim 1 or claim 2, if an upward protrusion is arranged on a jig such as a washer of the bush of the screw material, the removal of the screw member can be facilitated and the installation workability of the concrete product can be improved.

Brief Description of the Drawings

[0024] [Figure 1] It is a first diagram showing the telescopic member of the tilting roller unit according to the first embodiment. [Figure 2] It is a second diagram showing the telescopic member of the tilting roller unit according to the first embodiment. [Figure 3] It is a third diagram showing the telescopic member of the tilting roller unit according to the first embodiment. [Figure 4] It is a diagram showing the traveling path of the tilting roller unit according to the second embodiment. [Figure 5] It is a first diagram showing the screwing of a large concrete product according to the embodiment. [Figure 6] It is a second diagram showing the screwing of a large concrete product according to the embodiment. [Figure 7] It is a perspective view showing the traveling path of a conventional tilting roller unit. [Figure 8] It is a plan view showing the traveling state of a conventional tilting roller unit. [Figure 9] It is a diagram showing the conveying state of a conventional concrete product. [Modes for carrying out the invention]

[0025] As shown in Figures 1 and 2, the conveying device 10 according to the present invention, like conventional devices, is equipped with a concrete conveying path 11, and moves the conveying path 11 via a chill roller unit 20. 11-6 is foundation crushed stone.

[0026] 12 is a guide rail with a roughly U-shaped cross-section, 21 is the chill roller body, 23 is a support member connecting the chill roller body 21 (a support member perpendicular to the guide rail 12), and 29 is a guide roller that rotates along the guide rail 12.

[0027] Since the guide rail 12 may be curved, the guide roller 29 will have a caster structure that allows for swivel motion. The swivel motion only needs to rotate within a predetermined range (for example, 50 degrees to the left and right), because there are no excessively curved sections in the guide rail 12.

[0028] The support member 23 is a lateral connecting member installed at an angle approximately perpendicular to the guide rail 12. Note that the vertical connecting members installed approximately parallel to the guide rail 12 are not shown in Figures 1 and 2.

[0029] The transport device 10 according to the embodiment of claim 1 is configured such that the support member 23 (lateral connecting member) which is substantially perpendicular to the guide rail 12 is extendable and retractable.

[0030] As shown in Figure 3, the support member 23 is composed of, for example, an inner support member 23-1 with a small outer diameter and an outer support member 23-2 with a large outer diameter. A locking member 23-5 (for example, a pin or screw) is inserted into a locking hole 23-4 (for example, a pin hole or screw hole) provided in the inner support member 23-1 and the outer support member 23-2 to adjust and fix the lateral length of the support member 23.

[0031] The pitch (spacing) of the locking holes 23-4 is preferably set within a range that does not reduce the rigidity of the support member 23. The outer diameter shape of the support member 23 can be designed as appropriate, such as a rectangular cross-section or a circular cross-section.

[0032] To reduce weight, it is preferable that the inner support member 23-1 and the outer support member 23-2 be hollow inside. It is desirable that the inner support member 23-1 and the outer support member 23-2 be structured so that the inner support member 23-1 fits into the cylindrical space of the outer support member 23-2 and can slide.

[0033] By making the support member 23 extendable and retractable, the Chill Roller body 21 can move along the transport path 11 on different trajectories, such as on the outside of the transport path 11 (see Figure 1, a position far from the guide rail 12), on the inside of the transport path 11 (see Figure 2, a position close to the guide rail 12), or in the center of the transport path 11.

[0034] In Figures 1 and 2, reference numeral 21-2 denotes the covering material (cover material) of the chill roller body 21, and 21-4 denotes the roller installed inside the covering material (cover material) 21-2. Both the covering material (cover material) 21-2 and the roller 21-4 have the rigidity to withstand the weight of the concrete product mounted on the chill roller unit 20.

[0035] By making the support member 23 extendable and retractable, it is possible to prevent the formation of grooves (indentations) in the transport path 11 that tend to occur when the chill roller body 21 moves along the same path, thereby ensuring the stability of the movement of the chill roller unit 20.

[0036] Figure 4 shows an embodiment in which a rigid covering plate material 27 is laid on the upper surface of the transport path 11.

[0037] Grooves (indentations) in the transport path 11 that tend to form when the Chill Roller body 21 moves along the same track can be prevented by laying a hard covering plate material 27 on the upper surface of the transport path 11.

[0038] As the rigid covering plate material 27, for example, a steel plate with some thickness (steel plate material), plywood formed with sufficient thickness, or a resin plate can be used. The type of laying material to be used is designed according to the weight of the concrete product to be transported on the Chill Roller Unit 20.

[0039] Since the upper surface of the rigid covering plate material 27 is the surface over which the chill roller body 21 travels / moves, it is desirable that the surface be free of large irregularities.

[0040] Compared to the case where the support member 23 is expandable and contractible, the configuration in which rigid covering plate material 27 is laid is simpler in structure, but a simple cost comparison is difficult because it involves tasks such as transporting and laying / removing the covering plate material 27 to the site.

[0041] However, compared to the case where the support member 23 is extendable and retractable, this design has the advantage of being less prone to work accidents such as the inability to move the chill roller unit 20 due to malfunction or other reasons.

[0042] Figures 5 and 6 show embodiments of installing a large concrete product 40 in the transport path 11 described in claim 1.

[0043] This embodiment, as shown in Figure 5, illustrates an example in which an appropriate number of threaded rods (bolts) 43 are provided on the bottom surface 41 of a large concrete product 40 for drainage channels. 42 is a threaded hole.

[0044] The large concrete product 40 is lifted, for example, via jacks (manual jacks, etc.) 46 positioned on the left and right sides, the chill roller body 21 is moved and removed, and then the large concrete product 40 is lowered to adjust its dimensions with the surface of the transport path 11. At this time, it is connected to the adjacent large concrete product 40 in front.

[0045] Figure 6 illustrates the fixing of the threaded material 43. Note that, in order to simplify the drawing, the width and height of the large concrete product 40 are shown smaller than they actually are.

[0046] 43-2 is the screw head, 44 is the upper bush (washer and nut), and 45 is the lower bush. In this embodiment, an upward-facing projection 44-2 is provided on the washer of the upper bush 44. 43-4 is the sliding base (metal plate, etc.).

[0047] A concrete filling material 11-2, such as mortar, is poured between the upper surface of the transport path 11 and the bottom surface 41 of the large concrete product 40.

[0048] Remove the threaded rod 43 after the curing period for the concrete filling material 11-2 has expired.

[0049] In this case, the filling concrete material 11-2 may harden, preventing the threaded rod 43 from rotating. This is because the tip of the threaded rod 43 is surrounded by the filling concrete material 11-2.

[0050] In this case, the upward-facing projection 44-2 on the washer of the upper bush 44 is struck with an appropriate tool (spanner, hammer, etc.) to rotate the threaded material 43.

[0051] It is desirable to provide multiple (for example, two) upward-facing protrusions 44-2. This is to facilitate the rotation of the threaded material 43 by applying impact at different angles. For ease of molding, when providing multiple protrusions 44-2, it is desirable to provide two at symmetrical positions when viewed from a plane.

[0052] The upward-facing projection 44-2 is fixed by forming a recess or groove (not shown) on the upper surface of the washer of the upper bush 44, for example, and fitting the lower end of the projection 44-2 into it. Alternatively, the lower end of the projection 44-2 is fixed to a base plate (not shown), and the base plate is fixed to the upper surface of the washer of the upper bush 44. Fixing means can include, for example, welding or adhesive.

[0053] The protruding material 44-2 only needs to have enough strength to withstand strong impacts from a tool without breaking. Its shape is not specified. [Explanation of symbols]

[0054] 10 Conveying device 11 Conveyor path 11-2 Filling concrete material (mortar, etc.) 11-6 Foundation crushed stone 12 Guide rails 20 Chill Roller Unit 21 Chill Roller Main Unit 21-2 Covering material 21-4 Laura 23 Support member 23-1 Inner support material 23-2 Outer support material 23-4 Locking hole 23-5 Locking member 27 Covering board material 29 Guide rollers 40 Large Concrete Products 41 Bottom 42 screw holes 43. Screw material (bolt) 43-2 Screw head 43-4 Slide base 44 Upper bushing (washer and nut) 44-2 Protruding material 45 Lower bushing 46. ​​Jacks (manual jacks, etc.)

Claims

1. A guide rail with a roughly U-shaped cross-section is installed along the longitudinal direction of the concrete transport path. A conveying device that transports large concrete products to the installation site by loading them onto a chill roller unit that moves longitudinally along the conveying path, The aforementioned chill roller unit is Support members that connect the four main body of the chill roller, which are arranged in the front, back, left, and right directions, The support member in the left-right direction is provided with a guide roller at approximately the center, which moves the chill roller unit along the guide rail in the longitudinal direction of the transport path, The support member, which is perpendicular to the guide rail, A conveying device for large concrete products, characterized in that it can be extended and retracted within the width of the conveying path.

2. A guide rail with a roughly U-shaped cross-section is installed along the longitudinal direction of the concrete transport path. A conveying device that transports large concrete products to the installation site by loading them onto a chill roller unit that moves longitudinally along the conveying path, The aforementioned chill roller unit is Support members that connect the four main body of the chill roller, which are arranged in the front, back, left, and right directions, The support member in the left-right direction is provided with a guide roller at approximately the center, which moves the chill roller unit along the guide rail in the longitudinal direction of the transport path, On the left and right upper surfaces of the conveying path in which the aforementioned chill roller body moves, A conveying device for large concrete products, characterized by the placement of a rigid covering plate.

3. A method for installing a large concrete product on a concrete transport path according to claim 1 or claim 2, The bottom surface of the large concrete product that was transported to the installation site The jack is used to create a gap on the transport path and position the jack, Insert a screw into the screw hole that has been pre-made on the bottom surface. On the washer or screw head of the bush located on the upper surface of the screw hole of the aforementioned large concrete product, While an upward-facing projection is provided, A method for installing a large concrete product, characterized by placing a filling concrete material to fill the aforementioned gap.

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