JP6719110B1 - Underground structure transportation device and underground structure transportation method in excavation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To excavate a pipe such as a water supply and sewer pipe underground when excavating a heavy load without using a heavy machine such as a truck crane, and in the ground in a stable state even in a curved place. (EN) Provided are an underground structure conveying device and an underground structure conveying method capable of conveying and burying a structure. An underground structure transporting device 100 includes a pair of boom cylinders 11, a pair of telescopic booms that can extend and retract in the boom cylinders 11, and an arm 15 that is installed on the upper ends of the pair of telescopic booms. A gate type lifter, a geared trolley 2 that is attached to an arm 15 so as to be freely suspended and suspended, and a chain block 25 is hung, a pair of traveling carriages on which a boom cylinder 11 is erected, an electric traveling device for traveling the traveling carriage, and a ground surface. And a pair of transport rails 41 for guiding the traveling carriage. [Selection diagram] Figure 1

Description

The present invention relates to an underground structure conveying device and an underground structure conveying method in an excavation method in a place where a construction machine such as a heavy machine (a truck crane) cannot be installed.

As a method of burying pipes such as water and sewer pipes underground, an excavation method is known. In this excavation method, after digging a hole, a gutter block, a culvert, or the like is buried in a place where the hole is digged, but it is necessary to transport the culvert or the like to the place to be buried. Since such a heavy object is relatively heavy, it is generally lifted by a heavy machine, specifically, a truck crane or the like to be transported and buried.

However, it may be difficult to carry and bury culverts in a narrow space where a truck crane cannot enter. In particular, it may be difficult to run a curved (curved) portion while lifting a heavy object. As a device for solving such a problem, there is Document 1. Further, there is Document 2 as an invention relating to a gate-type crane in which a traveling rail is laid in a curved manner at a work base.

The device according to Document 1 has a pair of legs each having a parallel gate-shaped frame and an auxiliary frame that are parallel to each other, and the upper portions of both frames are connected by a horizontal rail that is orthogonal to both frames. Each of which is provided with wheels that can run in the parallel direction, supports horizontally short rails that are parallel to both frames so that they can travel along the horizontal rails, and supports a heavy load elevator that can travel along the short rails. Further, it is a gutter block construction device in which at least one leg of the gate frame is formed to be expandable and contractible, and it is possible to construct a gutter block safely and quickly and easily on a narrow road where a crane vehicle or a unic vehicle cannot be used and labor is required. The purpose is to save.

The invention according to Document 2 includes left and right traveling rails laid curved in a work base, a gate-shaped frame body arranged in a crossing state on the left and right traveling rails, and left and right of the gate-shaped frame body. Left and right traveling carriages that are pivotally attached to the lower ends of the legs of the vehicle so as to be horizontally rotatable and that travel on the left and right traveling rails, and the gate frame is on the traveling rails. Detecting means for detecting a curved portion of the traveling rail when traveling, and a speed difference according to the radius of curvature of the curved portion of the left and right traveling carriages when the detecting means detects the curved portion of the traveling rail. And a remote controller for transmitting a running/stop command to the control means to control start/stop of the left and right traveling carriages. The object is to improve the handling efficiency of construction materials, reduce the transportation cost, and easily cope with various terrains by forming a continuous structure of the transportation route of the cargo by the crane.

Japanese Utility Model Publication No. 62-147680 JP-A-7-215667

However, the device according to Document 1 is provided with wheels (casters) capable of traveling along parallel planes at the lower ends of the four legs of the gutter block construction device, and the device is utilized by using the wheels. Although it is to be run, this invention does not run on rails, so when traveling with a heavy load suspended, especially when traveling in a curved (curved) place, the balance should be lost and There is a risk of falling into.

Further, in the invention according to Document 2, the curved rails are left and right traveling rails, and thus it may be difficult to adjust a fine angle.

Therefore, an object of the present invention is to carry out excavation work in a state in which a heavy load is lifted without using a heavy machine such as a truck crane, and particularly in a curved (curved) place in a stable state. It is intended to provide an underground structure conveying device and an underground structure conveying method in an excavation method capable of conveying and burying a structure.

The invention of claim 1 is an underground structure transporting device in an excavation method for excavating a groove from the ground surface to the ground in the longitudinal direction and burying an underground structure in the excavation groove, wherein both sides in the lateral direction of the excavation groove. Laying in the longitudinal direction on the ground surface of, a pair of left and right transport rails for guiding the traveling carriage described later, a connection plate laid between the transport rails laid in the longitudinal direction and the transport rails, and a pair of boom cylinders, A gate-type lifter equipped with a pair of telescopic booms that are telescopic within a pair of boom cylinders, and an arm that is erected on the upper ends of the pair of telescopic booms. A geared trolley, a pair of traveling carriages on which a pair of boom cylinders are erected, and an electric traveling device for traveling the pair of traveling carriages are provided, and the transport rail is for fixing fasteners at a connecting portion of end faces in the longitudinal direction. By fixing holes, the connection plate is divided into a flat plate having a rectangular shape in a plan view or an inclined plate having a fan shape in a plan view. Through rails are formed by forming through fixing holes, and both side surfaces, which are the surfaces forming the main body of the connection plate, are provided at both connecting portions of both transport rails laid in the longitudinal direction to connect the transport rails. It is the underground structure conveying device in the excavation method.

The invention of claim 2 is characterized in that the pair of telescopic booms can be telescopically moved in the pair of boom cylinders by hydraulic pressure or pneumatic pressure. is there.

The invention of claim 3 further comprises a fall prevention means for preventing the traveling carriage from falling, and the fall prevention means comprises a fixing portion for fixing the traveling carriage on the front side and/or the rear side, and a fixing portion. 2. An L-shape in a front view or an inverted L-shape, which is composed of an arm portion extending vertically from a lower side surface and a support portion extending horizontally from a free end of the arm portion. Alternatively, it is an underground structure conveying device in the excavation method according to claim 2.

The invention according to claim 4 is characterized in that the main body of the connection plate is a rectangle or a square when viewed from the front, and the underground structure in the excavation method according to any one of claims 1 to 3. It is an object conveying device.

The invention according to claim 5 is characterized in that the connection plate is composed of a main body and a connection support portion projecting from the main body in a vertical direction, and is L-shaped when viewed from the front or inverted L-shaped. It is an underground structure conveyance device in the excavation construction method according to any one of claims 1 to 4 .

The invention of claim 6 is a method of transporting an underground structure in an excavation method using the underground structure transporting device in the excavation method according to any one of claims 1 to 5 , wherein one of a pair of left and right transport rails is used. The first step of laying a plurality of sides along the outer longitudinal direction of the curved excavation trench, and laying a connection plate between the transport rails on one side to connect the transport rails on one side And a third step of laying the other side of the pair of left and right transport rails on the opposite side to the transport rail on one side along the outer longitudinal direction of the excavation groove, and on the one side of the transport rail. A fourth step of making the longitudinal end face of the other transport rail flush with the longitudinal end face, and connecting the connection plate between the other transport rail and the transport rail, and laying the connection plate on the other side. And a fifth step of connecting the two to each other, wherein the underground structure transporting device is adapted for curved traveling, and is an underground structure transporting method in an excavation method.

According to the invention of claim 1, the underground structure can be transported in a narrow place or a place where there is an obstacle above. Specifically, it will be possible to carry work even when a large crane cannot be used, such as in places where work under elevated railways or under railway bridges is restricted, or in places where the road width is narrow. Will also be available. Therefore, even in a limited place or excavation section, an underground structure or the like can be carried into the excavation site. Furthermore, it is possible to improve safety and save labor.

According to the invention of claim 2, since the telescopic boom can be telescopically moved in the boom cylinder by hydraulic pressure or pneumatic pressure, the apparatus itself becomes compact.

According to the third aspect of the present invention, it is possible to prevent the traveling vehicle from tipping over by the fall prevention means.

According to the invention of claim 4, the portal plate crane mounted on the traveling carriage can be adapted to the straight traveling or the curving traveling by the connecting plate having a simple structure.

According to the fifth and sixth aspects of the invention, it is possible to cope with straight traveling and curved traveling by using various connection plates, and it is possible to connect the transport rail and the connection plate.

According to the invention of claim 7, the gantry crane mounted on the traveling carriage can be adapted to the straight traveling by the laying process of the transport rail.

According to the invention of claim 8, the gate-type crane mounted on the traveling carriage can be made to curve and travel in correspondence with a fine angle by the laying process of the transport rail and the connection plate.

It is a front view which sees through and shows a part of underground structure conveyance apparatus. FIG. 3 is a side view showing a part of the underground structure transporting device in a transparent manner and in a simplified manner. FIG. 8 is a front view illustrating a transverse state of the geared trolley with the telescopic boom extended. It is a side view of the geared trolley arrange|positioned at the arm. It is a front view of a conveyance rail. In the front view of the connection plate, (a) is a connection plate mainly for the inside of the curve, and (b) is a connection plate mainly for the outside of the curve. In a plan view of the connection plate, (a) is a rectangular connection plate in plan view, and (b) is a fan-shaped connection plate in plan view. FIG. 6 is an enlarged plan view of a transport rail and a connecting portion of the transport rail. FIG. 6 is an enlarged plan view of a connecting portion where an inclined plate is arranged between the transport rails. It is a top view of the state where the conveyance rail of one example (partially simplified) was laid so that the traveling carriage could travel straight. It is a top view of the state which laid the conveyance rail of one example (partially simplified) so that a traveling trolley might respond to curving. In order to make the traveling carriage compatible with curved traveling, a transport rail of another example (partially simplified) is laid, and an inclined plate (partially simplified) is laid between the transport rails. It is the top view which simplified the part. It is a top view of an underground structure conveyance device placed on a laid conveyance rail and an inclined plate. It is a top view of a fall prevention means. FIG. 4 is a plan view showing a state in which a plurality of one-side transport rails (partially simplified) are laid along the outer longitudinal direction of a substantially linear excavation groove. FIG. 4 is a plan view showing a state in which a plurality of other side transport rails (partially simplified) are laid along the outer longitudinal direction of the excavation groove that is substantially linear on the side facing the one side transport rail. It is a top view of the state where the end face in the longitudinal direction of the other transport rail is flush with the end face in the longitudinal direction of the one transport rail.

INDUSTRIAL APPLICABILITY The present invention relates to an underground structure conveying device 100 and an underground structure conveying method, and more specifically, a groove is excavated from the ground surface to the ground, and an underground structure 50 (heavy load) is excavated in the groove (excavation groove P). ) Is embedded in the excavation construction method (including the excavation shield construction method), the underground structure conveying device 100 and the underground structure conveying method.

First, the underground structure conveyance device 100 will be described. The main components of the underground structure transporting device 100 are a gate type lifter 1, a geared trolley 2, a traveling carriage 3, an electric traveling device 39, a transporting rail 41, a connecting plate 42 and the like. Hereinafter, each component article will be described.

The gate-type lifter 1 includes a pair of telescopic booms 12 and 12 that can extend and retract within the pair of boom cylinders 11 and 11, and an arm 15 that is erected on the upper ends 12a of the pair of telescopic booms 12 and 12. The pair of boom cylinders 11 and 11 and the pair of telescopic booms 12 and 12 and the arm 15 are arranged in a gate shape as described above (see FIGS. 1 and 3).

The pair of telescopic booms 12 and 12 can be telescopically moved in the boom cylinder 11 by hydraulic pressure or pneumatic pressure, that is, can be vertically extended and contracted by hydraulic pressure or pneumatic pressure, respectively. As described above, the pair of telescopic booms 12 and 12 can be telescopically moved in the boom cylinder 11 by hydraulic pressure or pneumatic pressure, but it is preferable that the pair of telescopic booms 12 and 12 be elastically moved by hydraulic pressure. Hereinafter, a configuration in which the telescopic boom 12 is allowed to extend and retract by hydraulic pressure will be described.

The pair of boom cylinders 11 and 11 are connected to the electric hydraulic unit 19, which is a hydraulic pressure generator, by the hydraulic hoses 14 and 14. Specifically, the pair of boom cylinders 11, 11 is provided with a hydraulic connection portion 11a on the lower side, and one end of each hydraulic hose 14, 14 is connected to the hydraulic connection portion 11a (see FIG. 2). The other end of each hydraulic hose 14, 14 is connected to the electric hydraulic unit 19.

As described above, the pair of boom cylinders 11 and 11 and the electro-hydraulic unit 19 are connected via the hydraulic hoses 14 and 14, and the operator 101 operates the operation switch 19 a of the electro-hydraulic unit 19 to expand and contract the boom. 12 expansion and contraction are performed. The electric hydraulic unit 19 is provided with a control panel, and controls the amount and pressure of the hydraulic oil sent from the electric hydraulic unit 19 to the pair of boom cylinders 11, 11. Further, the control panel and the operation switch 19a are connected by a wire (operation cable).

The boom cylinder 11 uses a hydraulic boom cylinder that uses hydraulic pressure as a working fluid. That is, a linear feed drive mechanism is achieved by vertically moving the telescopic boom in the hydraulic boom cylinder. Therefore, by linearly feeding the telescopic boom 12 of the hydraulic boom cylinder, the arm 15 and the underground structure 50 suspended via the geared trolley 2 can also be vertically moved.

As shown in FIG. 4, a steel material is mainly used for the arm 15. Specifically, H-section steel is used, and it is composed of an upper flange 15a, a lower flange 15c, and a web 15b connecting the upper flange 15a and the lower flange 15c.

Regarding the connection between the arm 15 and the telescopic boom 12, both sides of the arm 15 in the longitudinal direction L and the upper end 12a of the telescopic boom 12 are connected and fixed by fasteners 17 such as bolts and nuts. Specifically, the upper end 12a of the telescopic boom 12 is connected and fixed to the lower flanges 15c on both sides of the arm 15.

As described above, the arm 15 is erected on the upper end portions 12a, 12a of the telescopic booms 12, 12, and the geared trolley 2 is attached to the arm 15 so that the geared trolley 2 can be suspended, and the chain block is attached to the geared trolley 2. 25 are suspended.

That is, the geared trolley 2 is a trolley that travels on the arm 15 in the left-right direction (longitudinal direction L of the arm), and further includes a chain block 25 that moves the underground structure 50 and the like in the vertical direction. That is, it is a trolley with a chain block 25 in which a chain block 25 for unloading the underground structure 50 and the like and a trolley traveling on the arm 15 are combined.

In this way, the geared trolley 2 can be moved horizontally (sideways) on the arm 15 (lower flange 15c) serving as a horizontal guide rail (see FIG. 3), but this movement is mainly performed by the operator 101 by the operation chain 2a. The geared trolley 2 itself is moved by the hand operation of.

As this geared trolley 2, a well-known geared trolley 2 can be used. Main components of the geared trolley 2 include, for example, a pair of trolley frames 21 and 21, an operation chain 2a wound around, an operation wheel 2b rotated by the operation chain 2a, and a pinion arranged on the operation wheel 2b. A wheel 22a (operating wheel side) that meshes with the shaft 2c and rotates via the axle, a wheel 22b (opposite to the operating wheel) that rotates through the axle without meshing with the pinion shaft 2c, and a connection support member 23 and the like (see FIG. 4).

As shown in FIG. 4, a pair of trolley frames 21 and 21 are arranged in front of and behind the moving direction G of the gate type lifter 1 at intervals in the lateral direction S of the arm 15. That is, the pair of trolley frames 21 and 21 are arranged so as to sandwich the arm 15.

Two wheels (22a, 22a or 22b, 22b) are arranged in parallel on each trolley frame 21, 21. Specifically, two wheels are rotatably supported on each trolley frame 21, 21 via an axle. Therefore, a total of four wheels are installed on both trolley frames 21 and 21.

The wheels 22a, 22a on the operation wheel 2b side are provided with a gear portion, one end of the pinion shaft 2c meshes with this gear portion, and the operation wheel 2b is arranged at the other end of the pinion shaft 2c.

Then, the trolley frames are formed by connecting the trolley frames 21 and 21 by the connecting and supporting member 23 provided below the trolley frames 21 and 21.

In the geared trolley 2 thus configured, wheels are placed on the upper surface of the lower flange 15c of the arm 15 made of H-shaped steel, and the geared trolley 2 can traverse in the longitudinal direction L of the arm.

An upper hook (not shown) of the chain block 25, a connecting member, and the like are hooked on a connecting support member 23 that connects the lower ends of the pair of trolley frames 21 and 21, and a hook 27 for hanging a load is attached to the load chain 26b. It is drooped downward through (see FIG. 1). In this way, the geared trolley 2 having the chain block 25 suspended thereon can be freely suspended on the arm 15 serving as a rail for lateral traveling. Therefore, since it is possible to move laterally (horizontal movement) on the excavation groove P excavated in the longitudinal direction L (horizontal direction S of the excavation groove P), the suspended underground structure 50 and the like are similarly excavated. It is possible to move laterally (horizontal movement S) over P (horizontal direction S of excavation groove P).

Further, the arm 15 may be provided with a traverse stopper 18 in order to limit the range of lateral movement of the geared trolley 2. Specifically, when the traverse stopper 18 is provided on the web 15b of the arm 15 or the like, the geared trolley 2 does not traverse beyond the traverse stopper 18, so the lateral movement of the geared trolley 2 depending on the location of excavation ( This is effective in limiting the range of movement in the lateral direction S). Although a plurality of them are installed in FIG. 1 and the like, the location and number of the traverse stopper 18 of the web 15b of the arm 15 can be arbitrarily determined.

As the chain block 25, a well-known chain block 25 can be used, and the chain block 25 is mainly operated manually. That is, the hand of the operator 101 is repeatedly fed from the upper side to the lower side of the hand chain 25a to wind up and wind down the load chain 26b.

A hook 27 is attached to one end of the load chain 26b of the chain block 25. The hook 27 hooks an underground structure or the like. Thus, by operating the hand chain 25a, the underground structure 59 or the like hooked by the hook 27 can be moved in the vertical direction. That is, the underground structure 50 or the like can be lifted by operating the hand chain 25a to wind up the load chain 26b, and the underground structure 50 or the like can be lowered by winding down the load chain 26b.

In addition, a hanger 16 can be attached to the arm 15, and the underground structure 50 and the like can be suspended and lifted by the hanger 16. The hanger 16 can be used mainly when unloading the underground structure 50 or the like, which has been loaded on a truck or the like and carried, from the bed of the truck.

The underground structure 50 is buried in the excavation groove P, and a typical example thereof is a box culvert.

Here, lifting of the box culvert and the like will be described. First, attach a hanging metal fitting to the box culvert, and then hook one side of the wire to the hanging metal fitting and hook the other side of the wire to the hook 27 of the load chain 26b to lift or lower the box culvert. You can

In addition to the box culvert, the underground structure 50 corresponds to concrete blocks, water channels, gutters, and other heavy objects. Further, with respect to lifting of heavy objects, other than hanging metal fittings, wires, etc., any object may be used, and any method may be used.

The traveling carriage 3 is a traveling body that travels on a transport rail 41 and a connection plate 42, which will be described later, and includes a traveling frame 31, a wheel portion, a guide roller 38, an electric traveling device 39, and the like as main components. It Since the pair of boom cylinders 11, 11, which are the constituent articles of the gate-type lifter 1, are erected on the traveling carriage 3, the traveling carriage 3 of the present invention is also composed of a pair.

The traveling frame 31 is a main body of the traveling carriage 3, is provided with a wheel portion, an electric traveling device 39, and the like, and the boom cylinder 11 is provided upright as described above.

The wheel portion can be classified into a front wheel portion 33a provided on the front side and a rear wheel portion 33b provided on the rear side. The front wheel portion 33a and the rear wheel portion 33b each include a rotating shaft 34, a pair of rotating bodies 35, 35 that are cylindrical iron wheels, and both rotating bearings 36, 36 (bearings).

An example of the positional relationship among the rotary shaft 34, the rotary bearing 36, and the rotary body 35 is as follows. The rotating frame 36 is provided on both side surfaces of the traveling frame 31, and both rotating bearings 36, 36 support the rotating shaft 34, so that the rotating shaft 34 is installed on both side surfaces of the traveling frame 31. Then, the rotating bodies 35, 35 are attached to both ends of the rotating shaft 34. That is, the rotating shaft bearing 36 is provided between both side surfaces of the traveling frame 31 and the rotating shaft 34, and the rotating bodies 35, 35 are arranged on the rotating rotating shaft 34.

The rotating body 35 is arranged outside the traveling frame 31. In other words, the traveling frame 31 is arranged so as to be sandwiched by the pair of rotating bodies 35, 35. The front frame portion 33a and the rear wheel portion 33b having such a configuration are provided in the traveling frame 31.

From the viewpoint of stability and the like, the boom cylinder 11 is erected from substantially the center of the traveling frame 31, specifically between the front wheel portion 33a and the rear wheel portion 33b.

Further, for stable traveling of the traveling carriage 3, the traveling frame 31 is provided with a guide roller 38 that guides along the transport rail 41 and the connection plate 42. The guide roller 38 rolls along the transport rail 41 and the connection plate 42 and has a known structure. Further, the number of guide rollers 38 is not limited, but four rollers are provided in front of and behind each of the rotating bodies 35, 35, that is, in front of and behind the pair of rotating bodies 35, 35 of the front wheel portion 33a so as to sandwich each of the rotating bodies 35, 35. It is desirable that the rear wheel portion 33b includes four rotary members 35, 35 in front of and behind the pair of rotary members 35.

Furthermore, the traveling vehicle 3 may be provided with a fall prevention unit 37. The fall prevention unit 37 is specifically a plate-like L-shape in a front view or an inverted L-shape (see FIG. 1) and is fixed to the traveling frame 31, and the support portion 37c of the fall prevention unit 37 is provided. It is arranged between the traveling carriage 3 and the transport rail 41 and the like.

The fall prevention means 37 includes a fixing portion 37a that is fixed to the front side (forward side) and/or the rear side (reverse side) of the traveling frame 31 of the traveling vehicle 3 and from the lower side surface of one side of the fixing portion 37a. The arm portion 37b extends in the vertical direction and the support portion 37c extends in the horizontal vertical direction from the free end of the arm portion 37b. As shown in FIG. 14, the support portion 37c has a substantially T shape when viewed in plan. In other words, the overturn preventing means 37 has a fixing portion 37a having a rectangular shape in a front view for fixing the fixing portion 37a to the front side and/or the rear side of the traveling frame 31 of the traveling carriage 3, and the arm portion 37b is a fixing portion. A support portion 37c is provided below the side surface of 37a, which is fixed at its base end and extends in the vertical direction, and which extends from the free end on the opposite side to both sides and extends in the horizontal and vertical directions. A through hole 37a1 is formed in the fixing portion 37a.

Regarding the fixing of the fall prevention means 37, a fixing hole in which a screw groove is screwed is provided on the front side and/or the back side of the traveling frame 31, and the fixing portion 37a of the falling prevention means 37 is fixed to the traveling frame 31. It is fixed to the front side of and/or with a fixture such as a bolt.

Any shape and configuration may be used as long as the traveling vehicle 3 can be prevented from falling, and the traveling vehicle 3 may be provided at any position. Further, it may be provided in any part of the traveling carriage 3. As shown in FIG. 1, it is desirable that the two fall prevention means 37 are adjacent to each other. Specifically, it is desirable that the two fall prevention means 37 are provided adjacent to each other in front of the front wheel portion 33a, and the two fall prevention means 37 are also provided adjacent to each other after the rear wheel portion 33b. According to the fall prevention unit 37 having such an arrangement, it is possible to prevent not only the fall in the left-right direction with respect to the traveling direction G but also the fall in the traveling direction G.

The traveling vehicle 3 is equipped with an electric traveling device 39 that causes the traveling vehicle 3 itself to travel. The electric traveling device 39 is a device for driving the traveling vehicle 3 by driving a traveling motor that is interlocked with the rotating body of the traveling vehicle 3 by electric power.

The electric traveling device 39 is provided on the plane of the traveling frame 31 of the traveling carriage 3 and in the vicinity of the rear wheel portion 33b, and is interlocked with the rotating bodies 35, 35 of the rear wheel portion 33b. The traveling carriage 3 is caused to travel by rotating the rotating bodies 35, 35 of the portion 33b. Specifically, the first sprocket is arranged at the other end of the motor rotation shaft, the rotation shaft 34 is inserted into the shaft hole of the second sprocket, and the roller chain is wound around the first sprocket and the second sprocket. .. When the motor rotating shaft rotates, the rotating shaft 34 also rotates via the roller chain, and the rotating body 35 of the rear wheel portion 33b mounted on the rotating shaft 34 rotates, whereby the traveling carriage 3 travels.

Further, an electric motor with a speed reducer is adopted as a traveling motor for causing the traveling vehicle 3 to travel, and an operation control unit for controlling the operation of the electric motor with a speed reducer is provided.

As a means for guiding the traveling carriage 3, a transportation rail 41 and a connection plate 42 are mainly mentioned, and the traveling carriage 3 can travel on the transportation rail 41 and the connection plate 42 laid on the surface of the excavation section. Is. That is, the traveling carriage 3 on which the gate-type lifter 1 is mounted can be caused to travel along the transport rail 41 and the connection plate 42, and the traveling carriage 3 can move forward and backward in the traveling section where the transport rail 41 and the connection plate 42 are laid. .. The transport rail 41 and the connection plate 42 are for traveling a pair of traveling carriages 3, and thus are configured in a pair.

The pair of transport rails 41, 41 are laid on both sides in the lateral direction S of the excavation groove P so as to straddle the excavation groove P excavated in the longitudinal direction L. In other words, the excavation groove P exists between the pair of transport rails 41, 41 (see FIG. 13).

The transport rails 41, 41 for guiding the traveling carriage 3 on which the gate-type lifter 1 is mounted are mainly the traveling surface 41a, the projecting portion 41b, and the notch portion 41c as shown in FIG. , The ground installation surface 41d and the connecting portion 41f.

The traveling surface 41a is a surface on which the rotating body 35 of the traveling carriage 3 is placed and travels. That is, the traveling vehicle 3 can travel in the longitudinal direction L of the transport rail 41 by rotating the rotating body 35 of the traveling vehicle 3 along the traveling surface 41 a. The traveling surface 41a is provided along the longitudinal direction L at both ends in the lateral direction S of the transport rail 41, because the pair of rotating bodies 35, 35 are placed on the traveling surface 41a. In addition, in FIG. 5, the slope portion is provided to the inside of the traveling surface 41a, but it may be a step portion having a step.

The protruding portion 41b is a portion protruding from both end surfaces of the transport rail 41 in the lateral direction S, and is provided along the longitudinal direction L. Then, the guide roller 38 rolls along the protruding inner surface 41b1 of the protruding portion 41b.

The notch portion 41c is a notch space provided along the longitudinal direction L between the traveling surfaces 41a and 41a in the approximate center in the lateral direction S of the transport rail 41, and is provided in the traveling carriage 3. The support portion 37c of the fall prevention means 37 is interposed.

Further, as shown in FIG. 5, the transport rail 41 has fixing holes 41e for fixing fasteners formed in a connecting portion 41f on an end face in the longitudinal direction L, and fasteners such as bolts and nuts are used. The transport rails 41 can be connected and connected (see FIG. 8). The fixing hole 41e is preferably a round hole or an elongated hole.

An example of the length of the transport rail 41 is that the length of the transport rail 41 in the longitudinal direction L is 3 meters to 6 meters (see FIGS. 10 to 12), but the length is not limited thereto. Further, since the pair of rotating bodies 35, 35 are placed on the transport rail 41, it is provided with traveling surfaces 41a, 41a and ground installation surfaces 41d, 41d on both sides (see FIG. 5). A connecting plate 41x that connects the installation surface 41d and the ground installation surface 41d is provided at an appropriate position.

Note that, for example, H-shaped steel is used, the lower flange is used as the ground mounting surface 41d, the upper flange is used as the running surface 41a, and the protruding portion 41b is provided from the outer end portion of the upper flange, and the connecting portion 41f is provided on the end surface in the longitudinal direction L. May be provided.

The connection plate 42 is a plate arranged and laid between the transport rails 41 in order to lay the transport rail 41 along a curve. That is, the connection plate 42 can be connected and laid between the transfer rails 41 to connect the transfer rails 41 to each other, and the transfer rails 41 can be arranged inside the curve I and outside the curve O (see FIG. 9). ).

The connection plate 42 has a fan shape in plan view, that is, an inclined plate 47 (FIG. 7A) having an inclination, or a rectangular shape in plan view, that is, a flat plate 48 having no inclination (FIG. 7B). These plates can be divided and arranged one by one, or a plurality of these plates can be combined and arranged, and can be arranged and laid appropriately depending on the angle at which the vehicle travels in a curve. The tilt angle of the tilt plate 47 does not matter.

As shown in FIG. 6A, in the case of the connection plate 42 arranged inside the curve I, the component part of the connection plate 42 is composed of a main body part 44 that is connected and fixed to the connection part 41f of the transport rail 41. As shown in FIG. 6B, in the case of the connection plate 42 arranged on the outside O of the curve, the main body portion and the connection support portion 45 protruding in the vertical direction from the main body portion 44 are included. Further, in the main body portion 44 of the connection plate 42, as shown in FIGS. 6A and 6B, through fixing holes 42e for fixing fasteners are formed in the lateral direction S. The position and angle of this through fixing hole 42e do not matter. The through fixing hole 42e is preferably a round hole or an elongated hole. Further, when the through hole 42e is a long hole, a washer or the like is interposed.

Further, as the constituent surfaces of the connection plate 42, a ground installation surface 42b to be installed on the ground, a travel surface 42a on which the traveling carriage 3 travels, both side surfaces 42c on which the connecting portion 41f of the transport rail 41 and the connection plate 42 are provided, There is 42c. Further, in the case of the connection plate 42 arranged on the curve outer side O, an upper end surface 45a and an inner side surface 45b are further provided. Furthermore, side surfaces (42i, 42o) located inside or outside the transport rail 41 are also provided.

As shown in FIGS. 6 and 9, the connection plate 42 has a connection plate 42 laid on the outside O of the curve and a connection plate 42 laid on the inside I of the curve, in which the length of the ground installation surface 42b and the shape itself are changed. Can also In general, the connection plate 42 laid on the outside O of the curve has a longer ground installation surface 41d than the connection plate 42 laid on the inside I of the curve. As for the shape, as shown in FIG. 6A, mainly in the case of the connection plate 42 arranged inside the curve I, a rectangle in a front view or a square in a front view, and FIG. ), in the case of the connecting plate 42 arranged mainly on the outside O of the curve, it is L-shaped in a front view or L-shaped inverted.

Like the curve inner side I shown in FIG. 9, the inner side surface 42i of the connecting plate 42 is buried more than the inner side surface 41i of the conveying rail 41, and although not shown, the inner side surface 41i of the conveying rail 41 and the connecting plate 42 are not shown. The inner side surface 42i may be flush. In addition, as shown in the curve outside O in FIG. 9, the outside surface 42o of the connection plate 42 is projected more than the outside surface 41o of the transport rail 41, and although not shown, the outside surface 41o of the transport rail 41 is connected. The outer surface 42o of the plate 42 may be flush, or the outer surface 41o of the transport rail 41 and the outer surface 42o of the connection plate 42 may be buried.

In the case of the connecting plate 42 arranged on the outside O of the curve, as described above, the connecting plate 42 is composed of the main body portion 44 and the connection support portion 45 protruding in the vertical direction from the main body portion 44. Even in this case, the connection support portion 45 prevents the traveling carriage 3 from deviating from the transport rail 41.

Considering that the guide roller 38 rolls along the projecting inner side surface 41b1 of the transport rail 41 and the inner side surface 45b of the connection plate 42, the inner side surface 45b of the connection plate 42 is flush with the projecting inner side surface 41b1 of the transport rail 41. It is desirable to have a tilted position.

As described above, the traveling carriage 3 can travel along the transport rail 41 and the connection plate 42 laid in the excavation section. In this way, the traveling carriage 3 can be advanced to reach the space where the underground structure 50 or the like is buried in the excavation section, and the underground structure 50 or the like can be buried in the excavation groove P.

Next, a method of transporting an underground structure in the excavation method using the underground structure transport apparatus 100 in the excavation method will be described.

As a prerequisite process, a groove is excavated from the surface of the excavation site to the ground, and a Messel (not shown) or the like is inserted into the left and right surfaces of this groove (excavation groove P), and then the following steps are performed. The underground structure 50 can be transported to and buried in the excavation trench P.

First, an underground structure transport method for causing the underground structure transport apparatus 100 to travel straight will be described.

As a first step, one side of the pair of left and right transport rails 41 is laid along the outer longitudinal direction L of the substantially straight excavation groove P (see FIG. 15 ). That is, of the pair of left and right transport rails 41, one transport rail 41 on one side is laid along the excavation groove P in the longitudinal direction L.

As the second step, the transport rails 41 on one side are connected to each other. When connecting and fixing, the fixing tool 43 such as a bolt or a nut is used (see FIG. 8).

As a third step, a plurality of the other side of the pair of left and right transport rails 41 is laid along the outer longitudinal direction L of the excavation groove P on the side facing the one side transport rail 41 (see FIG. 16 ). That is, of the pair of left and right transport rails 41, a plurality of the other transport rails 41 on the other side are laid along the excavation groove P in the longitudinal direction L.

As a fourth step, the end surface of the other transport rail 41 in the longitudinal direction L is flush with the end surface of the other transport rail 41 in the longitudinal direction L (see FIG. 17 ). Here, the connecting portion 41f corresponds to the end surface of the transport rail 41 in the longitudinal direction L.

As the fifth step, the transport rails 41 on the other side are connected to each other. In the case of connecting and fixing, similarly to the second step, it is performed via a fixing tool 43 such as a bolt or a nut (see FIG. 8).

By passing through the above process, the underground structure conveyance device 100 can be made to linearly travel along the excavation groove P. The steps described above may be performed in a different order.

Next, an underground structure conveying method for causing the underground structure conveying device 100 to curve and travel will be described.

In the first step, one side of the pair of left and right transport rails 41 is laid along the outer longitudinal direction L of the curved excavation groove P. This step is substantially the same as the step described in the underground structure transportation method for causing the underground structure transportation device 100 to travel straight.

As the second step, the connection plate 42 is connected and laid between the transport rails 41 on one side to connect the transport rails 41 on one side.

As a third step, the other side of the pair of left and right transport rails 41 is laid along the outer longitudinal direction L of the excavation groove P on the side facing the one side transport rail 41. This step is also substantially the same as the step described in the underground structure transportation method for causing the underground structure transportation device 100 to travel straight.

As a fourth step, the end surface of the other transport rail 41 in the longitudinal direction L is flush with the end surface of the one transport rail 41 in the longitudinal direction L. This step is also substantially the same as the step described in the underground structure transportation method for causing the underground structure transportation device 100 to travel straight.

As a fifth step, a connection plate 42 is connected and laid between the transport rails 41 on the other side and the transport rails 41 on the other side are connected to each other.

By passing through the above process, the underground structure conveyance device 100 can be made to curve along the curved excavation groove P. The steps described above may be performed in a different order.

In the excavation method for excavating the excavation groove P, a heavy object (underground structure 50) such as a box culvert is transported in a narrow place where a truck crane cannot enter or a place where work in the sky is restricted. , It may be difficult to bury. In particular, in a tunnel or in a place where there is an obstacle such as an electric wire in the upper part, the boom and the boom of the truck crane need to be expanded and contracted, and therefore the work such as transportation and burying becomes difficult. That is, it is dangerous to work in a narrow place or in a place where there is an obstacle above, it is dangerous to handle heavy objects, and a skilled worker having a high level of skill is required.

If it is carried out in a place where a gate crane can be put in, the installation company may need to submit an installation report to the government in order to install the gate crane, which complicates the procedure. If there is no such installation report, it can be installed easily.

The present invention solves such a problem, and further makes it possible to make a portal lifter for lifting a heavy object compatible with curved traveling. Further, instead of laying a large curved rail, a simple and easy connection plate 42 can be used to cope with curved traveling, and delicate angle adjustment can be easily performed.

Although the present invention has been described above based on the respective embodiments, the present invention is not limited to the above embodiments, and changes may be made without departing from the spirit of the present invention. The described techniques or other known or well-known techniques may be combined.

Regarding the method of transporting the underground structure, an example in which one of the left and right transport rails 41 is first laid and then the other transport rail 41 is laid is explained. A pair of left and right transport rails 41 may be laid in pairs in the longitudinal direction L, and the transport rails 41 laid in the longitudinal direction L may be connected to each other.

1: Gate type lifter 11: Boom cylinder 11a: Hydraulic connection 12: Telescopic boom 12a: Upper end 14: Hydraulic hose 15: Arm 15a: Upper flange 15b: Web 15c: Lower flange 16: Hanger 17: Fastener 18: Traverse stopper 19: Electro-hydraulic unit 19a: Operation switch 19b: Operation cable 2: Geared trolley 2a: Operation chain 2b: Operation wheel 2c: Pinion shaft 21: Trolley frame 22a: Wheel 22b: Wheel 23: Connection support member 25: Chain block 25a: Hand chain 26b: Load chain 27: Hook 3: Traveling carriage 31: Traveling frame 33a: Front wheel portion 33b: Rear wheel portion 34: Rotating shaft 35: Rotating body 36: Rotating bearing 37: Fall prevention means 37a: Fixed portion 37a1 : Through fixing hole 37b: Arm portion 37c: Support portion 38: Guide roller 39: Electric traveling device 41: Conveying rail 41a: Traveling surface 41b: Projecting portion 41b1: Projecting inner side surface 41c: Notch portion 41d: Ground installation surface 41e: Fixed Hole 41f: Connection part 41i: Inner surface 41o: Outer surface 41x: Connection plate 42: Connection plate 42a: Traveling surface 42b: Ground installation surface 42c: Side surface 42e: Through fixing hole 42i: Inner surface 42o: Outer surface 43: Fixed Tool 44: Main body part 45: Connection support part 45a: Upper end surface 45b: Inner side surface 47: Inclined plate 48: Flat plate 50: Underground structure 100: Underground structure transfer device 101: Operator G: Moving direction L: Longitudinal direction S: Short direction P: Excavation groove I: Inside curve O: Outside curve M: Flush

Claims (6)

An underground structure conveying device in an excavation method for excavating a groove in the longitudinal direction from the surface of the ground, and burying an underground structure in the excavation groove,
A pair of left and right transport rails that are laid in the longitudinal direction on both sides in the lateral direction of the excavation groove in the longitudinal direction, and guide the traveling carriage described later
A connection plate connected and laid between the transport rail and the transport rail laid in the longitudinal direction,
A pair of boom cylinders, a pair of telescopic booms capable of telescoping in the pair of boom cylinders, and an arm lifter installed on the upper ends of the pair of telescopic booms, and a gate-shaped lifter,
Attached to the arm so that it can be suspended and run, and a geared trolley with a chain block suspended,
A pair of traveling carriages in which a pair of the boom cylinders are erected,
An electric traveling device for traveling the pair of traveling vehicles,
The transport rail has fixing holes for fixing fasteners formed in the connecting portion of the end faces in the longitudinal direction,
The connection plate is divided into a flat plate having a rectangular shape in a plan view or an inclined plate having a fan shape in a plan view. Piercing,
Both the connecting portions of both the transport rails laid in the longitudinal direction are provided with both side surfaces, which are surfaces constituting the main body portion of the connection plate, and the transport rails are connected to each other . Underground structure transfer device for excavation method.
The underground structure conveying device according to claim 1, wherein the pair of telescopic booms can be telescopically moved in the pair of boom cylinders by hydraulic pressure or pneumatic pressure.
Further comprising a fall prevention means for preventing the traveling carriage from falling,
The fall prevention means includes a fixed portion fixed to the front side and/or the rear side of the traveling vehicle, an arm portion extending vertically from a lower side surface of the fixed portion, and a horizontal direction from a free end of the arm portion. It consists of a support part extending to
The underground structure transportation device in the excavation method according to claim 1 or 2, wherein the underground structure transportation device has an L-shape in a front view or an inverted L-shape.
The underground structure transporting device in the excavation method according to any one of claims 1 to 3 , wherein the main body portion of the connection plate has a rectangular shape or a square shape when viewed from the front.
The connection plate includes the main body portion and a connection support portion that protrudes vertically from the main body portion.
The underground structure conveying device in the excavation method according to any one of claims 1 to 4, wherein the underground structure conveying device has an L-shape in a front view or an inverted L-shape.
A underground structure transfer method in open-cut method utilizing the underground structure transfer apparatus in open-cut method as claimed in claims 1 to 5,
A first step of laying one side of the pair of left and right transport rails along the outer longitudinal direction of the curved excavation groove;
A second step of connecting and laying the connection plate between the one transport rail and the one transport rail, and connecting the one transport rails to each other;
A third step of laying a plurality of the other sides of the pair of left and right transport rails on the side facing the one transport rail along the outer longitudinal direction of the trench.
A fourth step of making the longitudinal end face of the other transport rail flush with the longitudinal end face of the one transport rail;
A fifth step of connecting and laying the connection plate between the transport rails on the other side and connecting the transport rails on the other side,
An underground structure conveying method in an excavation construction method, characterized in that the underground structure conveying device is adapted for curved traveling.

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