JP3866551B2 - Plate member support device used in open shield machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plate-like member support device used in an open shield machine, and more specifically, by supporting a plate-like member above the open shield machine, vehicles, people, etc. pass through the upper surface of the plate-like member. The present invention relates to a plate-like member support device that can prevent a vehicle, a person, or the like from falling into a recess formed in a soil surface in which an open shield machine is embedded.
[0002]
[Prior art]
In order to embed underground structures such as water and sewage pipes and box culverts, an open shield method using an open shield machine has been frequently used. In the open shield method, a towed or self-propelled open shield machine is embedded in the soil, the underground structure is connected in the interior space of the open shield machine, and the soil is directed forward by the excavator. By sequentially excavating and moving the open shield machine forward, the underground structure located behind the open shield machine is backfilled (sediment or mortar is often used). The underground structure can be continuously embedded. As for the open shield method and the open shield machine, many applications have already been filed and detailed explanations are omitted. For example, in 1987 Patent Application Publication No. 133294 and 1991 Patent Application Publication No. 169914 Is explained in detail.
[0003]
In such an open shield method, since the concave portion in which the open shield machine is embedded exists on the soil surface, the passage of the vehicle, the person, etc. is hindered by the concave portion, the danger that the vehicle, the person, etc. will fall into the concave portion, etc. In order to avoid this, a plate-like member is placed on the upper end portion of the open shield machine embedded in the soil, or is placed so as to bridge a carrying girder on the upper end portion, and the plate-like member is placed on the carrying girder. Such a problem was avoided by placing and covering the concave portion with these plate-like members.
[0004]
[Problems to be solved by the invention]
FIG. 1 shows the concave portion described above by the method of placing the carrying beam 103 on the upper end portion of the open shield machine 101 embedded in the soil and placing the plate member 105 on the carrying beam 103. 107 is a cross-sectional view showing a portion covering 107 (note that a cross-section of a vertical plane that is substantially parallel to the traveling direction N of the open shield machine 101 and divides the internal space of the open shield machine 101 is shown. ).
From FIG. 1, a step D is formed between the end of the plate-like member 105 on the front side of the open shield machine 101 (that is, in the direction of arrow N in FIG. 1) and the surrounding soil surface 109. Recognize. The step D as it is (steep) damages the passage of vehicles, people, etc., so that a gentle inclined surface 121 is formed by rubbing (excavating to connect the step portion with a gentle slope). Has been done. In addition, although the place where the level | step difference D between the edge part of the plate-shaped member 105 of the front side of the open shield machine 101 and the soil surface 109 of the periphery is rubbed is shown here, all the plate-shaped members 105 are usually shown. It is necessary to rub the step between the edge and the surrounding soil surface 109.
[0005]
However, such rubbing requires excavation of earth and sand and compaction by pavement or the like. Therefore, it requires a large work time and man-hours and reduces the work efficiency of the open shield method using the open shield machine 101 and the method. Was the cause of increasing the costs. Further, when there is no place necessary for rubbing around the open shield machine 101, rubbing may not be possible or sufficient rubbing may not be performed (because rubbing forms a gentle slope, such a slope If there is no place to form the rub, it cannot be rubbed.) In addition, rubbing may not be possible when the soil surface 109 has a large gradient (referred to as an angle with respect to a horizontal plane). As described above, since there are various restrictions on rubbing, it is sometimes impossible to cope with rubbing.
In addition, it is theoretically possible to eliminate the step between the edge of the plate-like member 105 and the surrounding soil surface 109 by adjusting the depth at which the open shield machine 101 is embedded in the soil. However, in reality, it is not realistic because it is necessary to repeat surveying and sediment drilling.
In addition, the problem with such rubbing and the problem with adjusting the depth of embedding the open shield machine 101 in the soil is that a plate-like member is attached to the upper end portion of the open shield machine buried in the soil. Even when it is placed (that is, when a carrying beam is not used), it can occur in the same manner.
[0006]
Therefore, in the present invention, there is provided a plate member support device that can support a plate member above the open shield machine 101 without causing a step between the end portion of the plate member 105 and the surrounding soil surface 109. The purpose is to provide.
[0007]
[Means for Solving the Problems]
A plate-like member support device (this device) according to the present invention is a support device that is attached to an open shield machine and supports a plate-like member above the open shield machine, the plate-like member support device for the open shield machine. This is a plate-like member support device capable of adjusting the vertical position within a predetermined range.
In this way, the apparatus can be attached to the open shield machine and the vertical position of the plate member supported above the open shield machine can be adjusted within a predetermined range with respect to the open shield machine. The edge of the plate-like member can be adjusted to the same height as the surrounding soil surface, thereby preventing a step between the edge of the plate-like member and the surrounding soil surface. be able to.
Note that “supporting the plate-like member above the open shield machine” as used herein means not only that the device directly supports the plate-like member, but also that the device supports the above-mentioned carrying beam 103 (see FIG. 1). It is a concept including what supports a plate-shaped member through things like.
[0008]
The inclination of the plate-like member with respect to the open shield machine may be adjustable within a predetermined range.
As shown in FIG. 1 described above, the open shield machine (101) can tilt in various directions with respect to the soil surface (109) (for example, in FIG. 1, the open shield machine 101 tilts so that the front is lowered. Note that the inclination of the open shield machine 101 is not limited to the one shown in the cross section of FIG. 1, but may have a vertical difference in the vertical direction with respect to the plane of FIG. With this inclination, the plate-like member supported by the apparatus is also inclined (for example, in FIG. 1, the plate-like member 105 is inclined at an angle P so that the front is lower than the soil surface 109). In order to prevent a step between the end of the plate-like member and the surrounding soil surface, the inclination of the plate-like member with respect to the open shield machine can be adjusted within a predetermined range. preferable.
[0009]
When the inclination of the plate-shaped member with respect to the open shield machine is adjustable within a predetermined range, the carrying device is provided so that the support device traverses the open shield machine carrying the plate-like member. And a vertical adjustment means that is arranged in the lateral direction with respect to one carrying girder and that can independently adjust the vertical position of the one carrying girder with respect to the open shield machine. It may be.
The “carrying girder provided across the open shield machine” here refers to the left and right bulkheads of the open shield machine (which defines the internal space of the open shield machine and is oriented in the direction of travel of the open shield machine). This means that the carrying girders are provided so as to straddle the walls that exist on the left and right when they are present. The “upper and lower adjustment means“ arranged in the lateral direction ”means that at least two vertical adjustment means are provided along the longitudinal direction of the carrying beam.
By doing in this way, since the carrying girder provided so as to cross the open shield machine carries the plate member, the continuous carrying girder between the left and right partition walls of the open shield machine carries the plate member. By doing so, the plate-like member between the left and right partition walls can be reinforced. And since the inclination with respect to the longitudinal direction of the carrying beam provided so as to cross the open shield machine can be adjusted by the vertical adjustment means, the inclination in the lateral direction of the plate member with respect to the open shield machine is adjusted. Can do.
The vertical adjustment means may be anything as long as it can adjust the vertical position of the carrying girder. For example, a structure such as a jack (for example, a screw jack, a rack drive jack, a hydraulic jack), etc. It is possible to adjust the inclination of the plate member with respect to the open shield machine using a simple one.
[0010]
A plurality of the carrying girders may be arranged in the front-rear direction.
In this way, as described above, in addition to adjusting the inclination of the plate-shaped member with respect to the open shield machine in the lateral direction, it is possible to adjust the inclination of the plate-shaped member with respect to the open shield machine in the front-rear direction (of course. , Both the lateral and forward / backward tilts can be adjusted). For this reason, it is possible to adjust the inclination of the plate member with respect to the open shield machine more appropriately so as not to cause a step between the end portion of the plate member and the surrounding soil surface.
[0011]
The plate-shaped member may move upward with respect to the open shield machine, thereby creating a gap on the side surface and having a closing plate for closing the gap. When the plate-like member moves upward with respect to the open shield machine, the distance between the open shield machine and the plate-like member increases, and accordingly, the open shield machine and the plate-like member There may be a gap between the two. Such a gap often faces substantially the side surface (surface formed by earth and sand) that defines the recess in which the open shield machine is embedded (usually, the upper surface of the plate-like member is the surrounding soil). Since the upper and lower positions are the same as the surface, the gap is located below the soil surface.) The earth and sand can enter the internal space of the open shield machine via the gap. In order to prevent the earth and sand from entering through the gap, a blocking plate for closing the gap may be provided.
[0012]
This device is applied to an open shield machine that is buried in the soil and is buried in the soil along the path by repeating the arrangement and advancement of the buried object to be buried in the soil in the internal space. Can be widely installed and used (usually, the buried object existing behind the open shield machine is appropriately backfilled).
[0013]
A method of closing at least a part of a hole formed in the soil surface into which the open shield machine has entered when the open shield machine to which the apparatus is attached is arranged so as to infiltrate into the soil (hereinafter referred to as “book”). The method is called as follows.
That is, this method is a method of closing at least a part of a hole formed in the soil surface into which the open shield machine has entered when the open shield machine to which the apparatus is attached is arranged so as to enter the soil. A disposing step of disposing the plate member so that the plate member closes at least a part of the hole, and a position adjustment of adjusting a vertical position of the plate member with respect to the open shield machine. A method comprising the steps of:
In this way, the plate-like member is arranged by the present apparatus so that the plate-like member closes at least a part of the hole in the arranging step, and the plate-like member with respect to the open shield machine in the position adjusting step. Since the vertical position is adjusted, the end of the plate-like member can be adjusted to be approximately the same height as the surrounding soil surface, thereby the end of the plate-like member and its end At least a part of the hole into which the open shield machine has entered can be closed by the plate-like member in a state in which a level difference with the surrounding soil surface does not substantially occur.
Further, in this method, the order in which the arrangement step and the position adjustment step are performed is not limited. For example, even if the position adjustment step is performed after the arrangement step is performed, and conversely, after the position adjustment step is performed, An arrangement step may be performed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited by these.
[0015]
FIG. 2 is a plan view showing the open shield machine 13 to which the plate-like member support device (this device) 11 of the present invention is attached, and FIG. 3 is a cross-sectional view taken along line BB in FIG. 2 and 3, the open shield machine 13 is indicated by a dotted line for easy understanding. 4 is an enlarged view of circle C in FIG. 2, and FIG. 5 is a cross-sectional view taken along line LL in FIG. 4 (note that FIGS. 4 and 5 also show the open shield machine 13 in a solid line). Is shown.) Here, for ease of understanding, FIG. 5 does not show a cross section of a male screw 33 and a retaining nut 41 which will be described later.
The apparatus 11 will be described with reference to FIGS.
In addition, although the part which carries the carrying girder 61 mentioned later on the open shield machine 13 exists also in parts E, F, G, H, I, J, and K other than the part in the circle C in FIG. Since the configuration of the parts E, F, G, H, I, J and K is the same as that of the part in the circle C, the part in the circle C will be described here and the other parts E, F, G, A description of H, I, J, and K is omitted.
[0016]
Here, the open shield machine 13 is the same as the open shield machine described in the embodiment of the 1993 Utility Model Application Publication No. 21538 previously filed by the present applicant. Specifically, the front frame 1 and the tail frame 2 are slidably attached to each other in the front-rear direction (in FIGS. 2 and 3, the front direction is indicated by the arrow Q1 and the rear direction is indicated by the arrow Q2). In addition, a propulsion jack 3 is attached between the front frame 1 and the tail frame 2. For this reason, when the propulsion jack 3 is extended, the space between the front frame 1 and the tail frame 2 extends, so if there is earth and sand (for example, backfilled) behind the open shield machine 13, the front edge of the earth and sand is The front frame 1 moves forward due to the forward reaction force generated by the compression and then the tail jack 2 moves forward when the propulsion jack 3 is contracted, and then the rear side of the open shield machine 13 When the earth and sand are backfilled and the propulsion jack 3 is extended again, the front end of the earth and sand is squeezed rearward and the front frame 1 moves forward again by a reaction force forward caused by the squeezing. In this way, by repeating the steps of extending the propulsion jack 3 (rearward compaction of the sand and sand, forward movement of the front frame 1), contracting the propulsion jack 3 (moving the tail frame 2 forward), and backfilling the sand and sand The open shield machine 13 can be advanced while the earth and sand behind the open shield machine 13 is pressed and solidified.
However, the open shield machine 13 to which the apparatus 11 is attached may be any type and is not limited to the same as the above-described open shield machine 13 or the like, for example, 1991 Patent Application Publication No. 169914 It may be any of several types described in the examples of the issue.
[0017]
The apparatus 11 is roughly the upper end portion of the frame of the open shield machine 13 (the frame here is the front frame 1 if it is a portion in the circle C in FIG. 2, but the portion E, F and I are front frames 1, and portions G, H, J, and K in FIG. 2 are tail frames 2.) A base portion 31 attached to the base portion 31 and a base end (lower end) of the base portion 31 A through-hole 23 through which a male screw 33 rotatably mounted and a male screw 33 screwed into the male screw 33 are threaded on the inner surface (see particularly FIG. 6A described later). ), A retaining nut 41 screwed into the male screw 33 so as to be above the through hole 23, a carrying girder 61 supported at one end by the moving portion 21, and the movable portion 21. The closed blocking plate 71, It is constructed by.
Actually, since the apparatus 11 has four carrying girders 61 in the front-rear direction (refer to FIG. 2 in particular), in order to carry these four carrying girders 61, 4 Pairs (total 8) of base portions 31, 4 pairs (total 8) of male threads 33, 4 pairs of (total 8) moving portions 21, and 4 pairs (total 8) of lock nuts 41, , Has. Further, as will be described later, the closing plate 71 refers to the left and right (right and left when facing the traveling direction of the open shield machine 13 (arrow Q1 direction), and in FIG. 2, the right direction is the arrow Q3 direction and the left direction is the arrow Q4. Shown as directions.) Have a pair.
[0018]
Here, the upper end portion of the frame of the open shield machine 13 is formed of an H-section steel 17 having a longitudinal direction in the front-rear direction (the direction along the arrows Q1 and Q2). The H-shaped steel 17 is disposed so that the concave strip 17a (in particular, refer to FIG. 7B described later) is directed upward (upper and lower are the horizontal direction of the open shield machine 13). ("Up" is indicated by an arrow Q5 and "Down" is indicated by an arrow Q6) in FIG.
And the base part 31 is the insertion part 32 formed so that it may just be inserted in the groove 17a, and it goes down along the flame | frame of the open shield machine 13 from the insertion part 32 (to the internal space side of the open shield machine 13). The base part main body 35 formed so that it hangs down, and the screw support part 37 attached to the lower end of the base part main body 35 and rotatably supporting the base end (lower end) of the male screw 33 are included. Here, the screw support portion 37 has a bearing 37a for rotatably supporting the base end (lower end) of the male screw 33, and the male screw 33 is oriented so that the axis of the male screw 33 is substantially vertical. 33 is supported rotatably.
[0019]
As described above, the male screw 33 has a base end (lower end) rotatably attached to the base portion 31 (screw support portion 37), and has a thread (male screw) on the outer periphery along its axis (longitudinal direction). It is threaded.
A hexagonal portion 33a (substantially the same as the shape of the head of the hexagon head bolt) is formed at the tip (upper end) of the male screw 33 when viewed from the longitudinal direction of the male screw 33. For this reason, the male screw 33 can be rotated around the axis | shaft by using the tool etc. which engage with the hexagonal part 33a.
[0020]
As described above, the moving portion 21 has the through hole 23 through which the male screw 33 screwed into the inner surface of the female screw 33 is threaded on the inner surface at the substantially lower end, and the screw accommodating space for accommodating the male screw 33. 21a (in particular, see FIG. 6A described later). An opening 21aa is formed in the upper part of the screw accommodating space 21a, and a tool or the like can be engaged with the hexagonal portion 33a of the male screw 33 via the opening 21aa to rotate the male screw 33 around its axis. . A retaining nut 41 is screwed onto the male screw 33 above the through hole 23. The retaining nut 41 can also be rotated with respect to the male screw 33 by engaging a tool or the like via the opening 21aa.
Further, on the upper surface of the moving portion 21, a stopper 21c that engages with the end of the carrying beam 61 so that the end of the carrying girder 61 does not unexpectedly shift in the front-rear direction (the direction of the arrows Q1 and Q2). Is formed.
[0021]
Further, the carrying beam 61 is placed on the upper surface of the moving portion 21 and the end of the carrying beam 61 is fixed in the front-rear direction by the stopper 21c described above.
And the shift | offset | difference to the left-right direction (direction of the arrow Q4 and the arrow Q3) of the carrying beam 61 is substantially perpendicular | vertical with respect to the left-right direction which the holding beam 61 has that the end surface of the carrying beam 61 contact | abuts the stopper 21c. This is prevented by the contact between the surface 61d and the surface 21d substantially perpendicular to the left-right direction of the moving portion 21.
[0022]
In addition, a closing plate 71 is locked to the outer edge of the open shield machine 13 on the upper surface of the moving portion 21. The closing plate 71 includes a plate portion 73 formed of a flat plate-like member, and an engagement protrusion 75 that is attached to the plate portion 73 and engages with the upper surface edge of the moving portion 21.
The plate portion 73 is disposed along the frame of the open shield machine 13 (on the outer space side of the open shield machine 13), and the carrying beam 61 moves upward with respect to the open shield machine 13 as will be described later. Thus, the vertical dimension is sufficient to close the gap generated on the side surface.
And the engagement protrusion 75 engages with the upper surface edge part of the movement part 21 so that the plate part 73 can be supported with sufficient intensity | strength.
Further, the engaging ridge 75 and the plate portion 73 are continuously formed along the front-rear direction as will be described later.
[0023]
As described above, the male screw 33 is supported rotatably on the base portion 31 attached to the upper end portion of the frame of the open shield machine 13 with its axis directed substantially in the vertical direction, and the moving portion 21. Has a through-hole 23 through which a male screw 33 threaded on the inner surface of a female screw that engages with the male screw 33, and a carrying girder 61 is placed on the upper surface of the moving portion 21. By engaging a tool or the like with the hexagonal portion 33a of the male screw 33 and rotating the male screw 33 around its axis, the moving portion 21 is moved up and down with respect to the open shield machine 13, and the carrying girder 61 is moved accordingly. It can be moved up and down.
Therefore, if the carrying beam 61 carries a plate-like member (that covers the recess formed on the soil surface in which the open shield machine 13 is embedded), the upper and lower sides of the plate-like member supported above the open shield machine 13 are supported. Since the position can be adjusted within a predetermined range with respect to the open shield machine 13, the end of the plate-like member can be adjusted to be the same height as the surrounding soil surface, whereby the plate No step is generated between the end of the member and the surrounding soil surface.
[0024]
Further, here, a mechanism for independently adjusting the vertical position is provided in the vicinity of both ends of one carrying girder 61, and four carrying girders 61 are arranged in the front-rear direction. The inclination of the plate member with respect to the machine 13 in all directions can also be adjusted within a predetermined range.
[0025]
Next, the assembly of what is shown in FIG. 5 will be briefly described.
FIG. 6A is a view showing the moving portion 21, and FIG. 6B is a view showing the base portion 31, the male screw 33, and the set nut 41. In FIG. 6B, the base end (lower end) of the male screw 33 is rotatably attached to the base portion 31 via a bearing 37 a, and the locking nut 41 is screwed to the male screw 33.
First, the retaining nut 41 is removed from the male screw 33 from what is shown in FIG. 6B, and it is assembled with the moving part 21 shown in FIG. Specifically, the male screw 33 is screwed into a female screw threaded on the inner surface of the through hole 23, and the male screw 33 is passed through the through hole 23. Thereafter, the locking nut 41 is screwed onto the male screw 33 to constitute the one shown in FIG.
[0026]
And what is shown to Fig.7 (a) is assembled | attached to the frame upper end part of the open shield machine 13 shown to FIG.7 (b). Specifically, the fitting portion 32 is fitted into the concave strip 17 a of the H-shaped steel 17 disposed at the upper end portion of the frame of the open shield machine 13, and the base portion main body 35 is lowered along the frame of the open shield machine 13. Are assembled so as to hang down (to the inner space side of the open shield machine 13). This constitutes that shown in FIG.
8 is mounted on the upper surface of the moving portion 21 of the one shown in FIG. 8 to constitute the one shown in FIG. 9 (in addition, for ease of illustration and understanding, in FIG. (Hatching is omitted.) At this time, the end of the carrying beam 61 is fixed with respect to the front-rear direction by the stopper 21c, and the surface 61d substantially perpendicular to the left-right direction of the carrying beam 61 and the left-right direction of the moving portion 21 are fixed. The substantially vertical surface 21d is substantially in contact with the surface.
[0027]
Thereafter, the above-described closing plate 71 is locked to the one shown in FIG.
FIG. 10 is a view showing a closing plate 71 attached to the right side (in the direction of arrow Q3) of the open shield machine 13, and FIG. 10A is a plan view of the closing plate 71 (the closing plate 71 is attached to the open shield machine 13). FIG. 10B shows a side view of the closing plate 71 as seen from the direction of the arrow R in FIG. 10A. It is shown.) The closing plate 71 will be described with reference to FIGS.
The blocking plate 71 includes a front blocking plate 71a, a rear blocking plate 71b coupled to the rear of the front blocking plate 71a, and a blade opening 79 disposed in front of the front blocking plate 71a ( In FIGS. 10A and 10B, the front is indicated by the arrow Q1, and the rear is indicated by the arrow Q2.
The front blocking plate 71a has a front plate portion 73a whose main surface is formed of a steel plate having a substantially rectangular shape, and a front plate portion 73a so as to extend substantially parallel to a substantially rectangular long side formed by the main surface of the front plate portion 73a. A front engaging protrusion 75a that is attached and engages with the upper surface edge of the moving portion 21.
Similarly, the rear blocking plate 71b includes a rear plate portion 73b whose main surface is formed of a substantially rectangular steel plate, and a rear plate extending substantially parallel to a substantially rectangular long side formed by the main surface of the rear plate portion 73b. A rear engagement protrusion 75b that is attached to the portion 73b and engages with the upper edge of the moving portion 21.
The front closing plate 71a and the rear closing plate 71b are connected by a joint portion 78 so as to allow bending within a predetermined range. The blade portion 79 is disposed in front of the front closing plate 71a so that the blade portion is directed forward, and this functions as a blade for excavation in front of the open shield machine 13. The blocking plate 71 is provided to function as a portion to be attached to the open shield machine 13 (the closing plate 71 and the open shield machine 13 are attached by bolts).
[0028]
The plate portion 73 (the front plate portion 73a and the rear plate portion 73b) is disposed along the frame of the open shield machine 13 (on the outer space side of the open shield machine 13) as described above, and the open shield machine. 13 has a dimension in the vertical direction (dimension S in FIG. 10) sufficient to close a gap generated on the side surface when the carrying beam 61 moves upward. Further, the engaging ridges 75 (the front engaging ridges 75a and the rear engaging ridges 75b) move so as to support the closing plate 71 (the front closing plate 71a and the rear closing plate 71b) with sufficient strength. Engage with the top edge of portion 21.
10 shows the closing plate 71 attached to the right side (arrow Q3 direction) of the open shield machine 13, but the closing plate 71 attached to the left side (arrow Q4 direction) of the open shield machine 13 is the same as this. (Of course, since it is attached to the left side of the open shield machine 13, the attachment direction of the engaging protrusion 75 and the blade edge portion 79 to the plate portion 73 is different).
[0029]
The closing plate 71 as described above is attached to the one shown in FIG. Specifically, as shown in FIG. 5, the plate portion 73 (the front plate portion 73a and the rear plate portion 73b) is along the frame of the open shield machine 13 (along the external space side of the open shield machine 13). The engaging ridges 75 (the front engaging ridges 75 a and the rear engaging ridges 75 b) are engaged with the upper surface edge of the moving portion 21.
In this way, the configuration shown in FIG. 5 is configured.
Note that portions other than the circle C in FIG. 2 (portions E, F, G, H, I, J, and K in FIG. 2) may be performed in the same manner.
[0030]
Finally, a method for using the apparatus 11 will be briefly described.
FIG. 11 is a cross-sectional view (showing the same part as FIG. 5) showing the first step of the method of using the apparatus 11 (note that FIG. 11 to FIG. 15 facilitate the illustration and understanding). Therefore, hatching is omitted for those not related to the description of the method of using the apparatus 11). First, the tip of the nut rotary handle 81 that can be engaged with the lock nut 41 (the portion that engages with the lock nut 41) is inserted into the screw accommodating space 21a via the opening 21aa, and the tip is engaged with the lock nut 41. Combine. Then, by holding and rotating the nut rotation handle 81, the lock nut 41 is loosened (the lock nut 41 is raised). After the locking nut 41 is loosened to a desired position, the tip of the nut rotation handle 81 is extracted from the screw accommodating space 21a.
By the above first step, the moving portion 21 can be raised by rotating the male screw 33 as will be described later (second stroke).
[0031]
FIG. 12 is a cross-sectional view (showing the same part as FIG. 11) showing a second step of the method of using the apparatus 11. In FIG. 12, the tip of the male screw rotation handle 83 (the portion engaging with the hexagonal portion 33a of the male screw 33) that can engage with the hexagonal portion 33a of the male screw 33 is inserted into the screw accommodating space 21a via the opening 21aa. Then, the tip is engaged with the hexagonal portion 33 a of the male screw 33. Then, by grasping and rotating the male screw rotation handle 83, the male screw 33 can be rotated around its axis, and the vertical position of the moving portion 21 can be adjusted (raised or lowered). After adjusting the vertical position of the moving part 21 to a desired position, the tip of the male screw rotation handle 83 is removed from the screw accommodating space 21a.
By adjusting the vertical position of the moving part 21 by the above second step, the vertical position of the carrying beam 61 carried by the moving part 21 can be adjusted (that is, the second step is the open shield machine 13). A position adjusting step for adjusting the vertical position of a plate-shaped member 151 to be described later. In the state shown in FIG. 12, the plate portion 73 of the closing plate 71 closes the gap 91 generated on the side surface when the carrying beam 61 moves upward with respect to the open shield machine 13.
[0032]
FIG. 13 is a cross-sectional view (showing the same part as FIG. 12) showing a third step of the method of using the apparatus 11. The tip end of the nut rotation handle 81 is reinserted into the screw accommodating space 21a through the opening 21aa, and the tip end is engaged with the lock nut 41 again. Then, by holding and rotating the nut rotation handle 81, the lock nut 41 is tightened (the lock nut 41 is lowered). After sufficiently tightening the locking nut 41 (so that the male screw 33 does not rotate unexpectedly), the tip of the nut rotation handle 81 is removed from the screw accommodating space 21a.
Since the male screw 33 is prevented from rotating unexpectedly by the above third step, the vertical position of the moving part 21 and the carrying beam 61 carried by the moving part 21 can be reliably fixed at a desired position.
[0033]
FIG. 14 is a cross-sectional view (showing the same part as FIG. 13) showing a fourth step of the method of using the apparatus 11. As shown in FIG. 13, after the vertical position of the moving part 21 and the carrying beam 61 carried by the moving part 21 is fixed, the gap 93 formed between the moving part 21 and the base part 31 is filled to carry the moving part 21. A sleeper 95 and a camber 97 (having a wedge-like shape in the gap 93, the camber 97 is driven into the gap left after the sleeper 95 is inserted into the gap 93, so that the gap 93 is moved to the sleeper 95 and the camber 97 can be completely filled in the vertical direction). This is because even if a large downward force is applied to the moving part 21 (for example, a plate-like member (not shown) is placed on the upper portion of the carrying beam 61, a vehicle or the like passes through the upper surface of the plate-like member). In such a case, most of the force is transmitted from the moving portion 21 to the base portion 31 by the sleepers 95 and the camber 97, and no great force is applied to the male screw 33 or the bearing 37a. And the structure of these can be simplified.
[0034]
In the second step described with reference to FIG. 12, the vertical position of the moving part 21 and the carrying beam 61 carried by the male screw 33 is adjusted by rotating the male screw 33 around its axis. When it is necessary to make the vertical position of the carrying beam 61 higher than the maximum height at which the vertical position of the carrying beam 61 can be adjusted by rotating the 33 around its axis, as shown in FIG. You may make it raise the height of the base part 31 with respect to the open shield machine 13 by arrange | positioning the adjustment frame 141 between the open shield machine 13 and the base part 31. FIG.
The rising height (in FIG. 15, height T in FIG. 15) of the base portion 31 with respect to the open shield machine 13 by arranging the adjustment frame 141 is the upper and lower of the carrying girder 61 by rotating the male screw 33 around its axis. If it is made smaller than the adjustment range of the position, the vertical position of the carrying beam 61 can be adjusted steplessly (that is, continuously) and widely. In this case, if a plurality of adjustment frames 141 can be arranged in the vertical direction, the vertical position of the carrying beam 61 can be adjusted steplessly (that is, continuously) and more extensively.
[0035]
As described above, the vertical positions and inclinations of the respective supporting girders 61 (upper and lower positions at both ends of one carrying girder 61, and upper and lower positions of a plurality (here, four) of the carrying girders 61 arranged in the front-rear direction, After adjusting the inclination, the plate member 151 is placed on the upper surface of the carrying beam 61 (the plate member 151 closes at least a part of the hole 107). A disposing step of disposing the plate-shaped member 151).
An example in which the plate-like member 151 is placed on the upper surface of the carrying beam 61 is shown in FIGS. FIG. 16 is a plan view (in order to facilitate understanding, the plate-like member 151 is indicated by a dotted line and the open shield machine 13 is not shown), and FIG. M sectional view (for ease of understanding, the open shield machine 13 is illustrated by a dotted line) (note that the plate member 151 is divided along the carrying beam 61, In Fig. 16, the line indicating the divided edge is not observed overlapping with the line of the carrying beam 61. Refer to Fig. 17 for how the plate-like member 151 is divided.
By adjusting the vertical position of each of the four carrying girders 61 in the vicinity of both ends (that is, a total of eight places) independently, the step between the end of the plate-shaped member 151 and the surrounding soil surface 109 can be reduced. Little has occurred (see in particular FIG. 17).
Also, here, the inclination of the plate member 151 relative to the open shield machine 13 is adjusted within a predetermined range by independently adjusting the vertical positions of the four carrying girders 61 near the both ends (that is, a total of eight places). Since it is possible, the level | step difference between the edge part of the one-layer plate-shaped member 151 and the earth surface 109 of the periphery is small.
[0036]
As described above, the apparatus 11 is a support device that is attached to the open shield machine 13 and supports the plate member 151 above the open shield machine 13, and the vertical position of the plate member 151 with respect to the open shield machine 13 is set to a predetermined value. It is a plate-shaped member supporting device that can be adjusted within a range.
In addition, by independently adjusting the vertical positions of the four carrying girders 61 in the vicinity of both ends (that is, a total of eight places), the inclination of the plate member 151 with respect to the open shield machine 13 can be adjusted within a predetermined range. is there.
The apparatus 11 is provided with a plurality of support girders 61 (two in this case) in the lateral direction with respect to the carrying girders 61 provided so as to cross the open shield machine 13 carrying the plate-like member 151. Each has an up-and-down adjustment means which can adjust the up-and-down position with respect to the open shield machine 13 of one carrying girder 61 independently. Here, the vertical adjustment means includes a base portion 31, a male screw 33, and a moving portion 21. Further, here, a plurality (four) of carrying girders 61 are arranged in the front-rear direction, and the up-and-down adjusting means is provided at both ends of each carrying girder 61 (that is, the up-and-down adjusting means here). Are arranged in a total of 8 sets (2 sets / book (carrying girder) × 4 (carrying girder)).
[0037]
Further, the apparatus 11 has a closing plate 71 for closing the gap 91 by creating a gap 91 on the side surface when the plate-shaped member 151 moves upward with respect to the open shield machine 13.
Then, when the open shield machine 13 to which the present apparatus 11 is attached is arranged so as to infiltrate into the soil, at least a part of the hole 107 formed in the soil surface 109 into which the open shield machine 13 has entered is closed. The following method can be used. That is, the method adjusts the disposing step of disposing the plate member 151 so that the plate member 151 closes at least a part of the hole 107 and the vertical position of the plate member 151 with respect to the open shield machine 13. And a position adjusting step.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a place where a carrying girder is placed over an upper end portion of an open shield machine and a recess is covered by a method of placing a plate-like member on the carrying girder.
FIG. 2 is a plan view showing an open shield machine equipped with a plate-like member supporting device (this device) according to the present invention.
3 is a cross-sectional view taken along the line BB in FIG.
4 is an enlarged view of a circle C in FIG.
5 is a cross-sectional view taken along line LL in FIG.
FIG. 6A is a view showing a moving portion, and FIG. 6B is a view showing a base portion, a male screw, and a set nut.
FIG. 7 (a) is a view showing a state where the one shown in FIG. 6 (b) and the one shown in FIG. 6 (a) are assembled, and FIG. 7 (b) shows an open shield machine; It is a figure which shows a frame upper part.
FIG. 8 is a view showing a state where the frame shown in FIG. 7A is assembled to the upper end portion of the frame of the open shield machine shown in FIG. 7B.
FIG. 9 is a view showing a place where a carrying beam is placed on the upper surface of a moving part.
FIG. 10 is a view showing a closing plate attached to the right side of the open shield machine.
FIG. 11 is a sectional view showing a first step in a method of using the apparatus.
FIG. 12 is a cross-sectional view showing a second step of the method of using the apparatus.
FIG. 13 is a sectional view showing a third step in the method of using the apparatus.
FIG. 14 is a sectional view showing a fourth step in the method of using the apparatus.
FIG. 15 is a view showing a state where an adjustment frame is disposed between an open shield machine and a base portion.
FIG. 16 is a plan view showing an example in which a plate-like member is placed on the upper surface of the carrying beam.
17 is a cross-sectional view taken along the line MM in FIG. 16;
[Explanation of symbols]
1 Front frame
2 Tail frame
3 propulsion jack
11 Plate-like member support device of the present invention (this device)
13 Open shield machine
17 H-section steel
17a concave
21 Moving parts
21a Screw storage space
21aa opening
21c stopper
21d Surface substantially perpendicular to the left-right direction
23 Through hole
31 foundation
32 Insertion part
33 Male thread
33a Hexagon part
35 Basic part body
37 Screw support
37a bearing
41 Locking nut
61 Carrying girder
61d Surface substantially perpendicular to the left-right direction
71 Blocking plate
71a Front blocking plate
71b Rear closing plate
73 Plate part
73a Front plate part
73b Rear plate
75 engaging ridges
75a Front engagement ridge
75b Rear engagement ridge
78 Joint
79 Cutting edge
81 Nut rotation handle
83 Male screw rotation handle
91, 93 Clearance
95 sleepers
97 camber
101 Open shield machine
103 Carrying girder
105 Plate member
107 hole (concave)
109 soil surface
121 Inclined surface
141 Adjustment frame
151 Plate member

Claims (7)

A support device that is attached to an open shield machine, supports a plate member above the open shield machine, and can adjust the vertical position of the plate member relative to the open shield machine within a predetermined range,
A base portion attached to the open shield machine;
A male screw with its lower end rotatably attached to the base part,
A through hole through which a male screw is threaded on the inner surface of a female screw that engages with the male screw, a screw accommodating space for accommodating the male screw, and an upper portion of the screw accommodating space, through which the male screw is connected to the shaft A moving part having an opening that can be rotated around;
A plate-like member support device.        The plate-shaped member support device according to claim 1, wherein an inclination of the plate-shaped member with respect to the open shield machine is adjustable within a predetermined range.         A plurality of support girders are provided so as to traverse the open shield machine carrying the plate-like member, and a plurality of support girders are arranged in the lateral direction for each of the carry girders, and each of the support girders is independently The plate-like member support device according to claim 2, further comprising a vertical adjustment unit capable of adjusting a vertical position of the girder with respect to the open shield machine.         The plate-like member support device according to claim 3, wherein a plurality of the carrying girders are arranged in the front-rear direction. A gap is generated on the side surface by moving the plate-like member upward with respect to the open shield machine,
The plate-like member support device according to any one of claims 1 to 4, further comprising a closing plate for closing the gap.         An open shield machine equipped with the plate-like member support device according to any one of claims 1 to 5. A method of closing at least a part of a hole formed in the soil surface into which the open shield machine has entered when the open shield machine according to claim 6 is arranged to infiltrate into the soil,
A disposing step of disposing the plate member so that the plate member closes at least a part of the hole;
A position adjusting step for adjusting the vertical position of the plate-like member with respect to the open shield machine;
Comprising a method.

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