JPH11209100A - Push-in device for box culvert - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely and easily transfer a box culvert to a construction site. SOLUTION: In installing a box culvert 10, rails 2, 2 are placed near an installation-planed position. To move the box culvert 10 along the rails 2, 2, an oil jack 40 is installed on the box culvert 10 and a push rod for the oil jack 40 is connected to a reaction support 50. The reaction support 50 is mounted to be freely moved or fixed to the rail 2 and the push rod for the oil jack 40 is protruded on an intermittent base, so that the reaction support 50 is fixed to the rail 2 and the box culvert 10 is thrust on the rail 2 and then slid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an underground water storage tank,
The present invention relates to a method of pushing a box culvert constructed for an underground passage, an underground cable tunnel, a sewer, and the like, and a pushing device used in the method.

[0002]

2. Description of the Related Art Conventionally, large machines such as cranes have been used for installation and installation work of box culverts for underground water storage tanks and the like. In some cases, the installation and installation work of the box culvert was hindered. As means for solving the above problems, if the conventional technologies are listed,
There are a pulling method using a winch, a single jack method, a bogie method and the like. In the pulling method using a winch, the box culvert is drawn in with a long wire rope, so that if the transport distance is long, it is difficult and lacks safety. In the push-in method using a single jack, the reaction force receiver is attached to the H-section steel buried in the foundation concrete by bolts and nuts one stroke at a time.
There was a problem that this installation was troublesome and workability was poor.

[0003] As a bogie construction method, for example, Patent No. 1
No. 623741 and Utility Model Registration No. 1801918 are proposed. However, this technique has a problem that it is necessary to provide a step between a bogie with an elevating device and a foundation concrete, which is costly. There is a disadvantage that workability is poor because it is heavy.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art. That is, when a box culvert is installed in a place where a crane operation cannot be performed, construction of the box culvert is difficult. An object of the present invention is to provide an indentation method for safely and easily transferring to a construction site and an indentation device used in the method.

[0005]

According to the present invention, the following means are provided to achieve the above object. The box culvert push-in method according to claim 1, wherein when the box culvert is installed, the rails 2 and 2 are laid in the vicinity of the installation position, and the box culvert 10 is moved along the rails 2 and 2. In the push-in method, the oil jack 40 connected to the oil pump 20 is
0 and the reaction force receiving portion 50, and the reaction force receiving portion 50 is mounted so as to be movable and fixed to the rail 2, and the reaction force receiving portion 50 is protruded by the push rod 48 of the oil jack 40. The part 50 is fixed to the rail 2, and the box culvert 10 is pressed on the rail 2 to slide.

According to a second aspect of the present invention, in the box culvert pushing method, the oil jack 40 is provided.
Is set on the box culvert 10 and the oil jack 4
The zero push rod 48 is connected to the reaction force receiving portion 50.

According to a third aspect of the present invention, the box culvert pushing device includes an oil pump 20, an oil jack 40 operated by the oil pump 20, and a jack fixing portion 30 connected to the oil jack 40 and fixed to the box culvert. A reaction force receiving portion 50 movably and fixedly arranged on the rail 2 installed on the base 1, and the reaction force receiving portion 50 is attached to the push rod 48 operated by the oil pressure of the oil jack 40. The reaction force receiving portion 50 is fixed to the rail when the push rod 48 projects, and the reaction force receiving portion 50 is configured to be movable on the rail 2 when the push rod 48 is retracted.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, FIG.
3 will be described. The concrete base 1 is cast at a position where the box culverts 10 are connected and installed.
At the time of the casting, rails 2 made of H-shaped steel are previously placed on the base 1.
In this method, the box culvert 10 is mounted on the rails 2 and 2 by exposing the base 2 to about 50 mm from the surface of the base 1, and the box culvert 10 is moved to the work site by the pressing device A.

In the pushing device A, the oil jack 40 connected to the oil pump 20 is installed and fixed on the box culvert 10, and a push rod (piston) 48 of the oil jack 40 is connected to the reaction force receiving portion 50. By mounting the reaction force receiving portion 50 on the rails 2 and 2 so as to be movable and fixed, the push rod 48 protrudes to fix the reaction force receiving portion 50 to the rails 2 and 2 so that the box culvert 10 is moved to the rails 2 and 2. , 2 to be pressed and slid.

The base 1 is formed by casting concrete. When forming the base 1, the rails 2 and 2 are laid in advance as described above. Further, since the box culvert 10 is slid along the length direction of the rails 2, 2, the upper surfaces of the rails 2, 2 need to be smooth. The box culvert 10 applied to this method may be a known one. That is, as shown in FIGS. 1 to 3, the box culvert 10 has the sheath hole 11 formed therein, but the existence of the sheath hole 11 is not an essential component of the present invention.

The oil pump 20 is mounted on the box culvert 10. An oil hose 21 is connected to the oil pump 20 via a solenoid valve (not shown), and supplies pressure oil to first and second pressure oil holes 41a and 41b of an oil jack 40 described later. The oil pump 20 moves together with the box culvert 10, and after the box culvert 10 is set in an appropriate fixed position, the oil pump 20 is driven by wheels and installed on the next box culvert 10.
In fixing the jack fixing portion 30 to the box culvert 10, the sheath hole 11 is used. That is, the pipe 31 of the jack fixing portion 30 is inserted into the sheath hole 11 and the expanding piece 31b of the pipe 31 is opened.

As shown in FIG. 4 (A), the jack fixing portion 30 is mainly composed of a pipe 31 having a cylindrical cross section and made of a material having metal elasticity such as steel. And FIG.
As shown in (B), a rectangular plate-shaped fixing frame 35 is formed at the left end of the pipe 31 in a C-shape when viewed from the side.
Attached in a T-shape. An opening 35a is formed in the center of the fixed frame 35 so as to communicate with the hole of the pipe. The first connection frame 44 on the oil jack 40 side is detachably engaged with the fixed frame 35. The left end of the first connection frame 44 forms a first hinge 42,
It is rotatably supported by a connecting pin 43. At the right end of the pipe 31, as shown in FIG.
Four slits 31a along the axis of the pipe 31
Are formed, and as a result, the expanding pieces 31b are formed.

An internal screw 31c is provided in the cylinder of the pipe 31, and an internal bolt 32 is rotatably supported by the internal screw 31c. An operation shaft portion 32a having a rectangular cross section as shown in FIG. 4D is formed at the left end of the internal bolt 32, and an adjustment screw 33 is provided at the right end thereof.
Are formed. As shown in FIG. 4 (E), an expanding piece 34 having a conical surface is screwed into the adjusting screw 33 via its inner screw 34a. The conical surface is in contact with the inner surface of the end of the expanding piece 31b.

With the above configuration, the pipe 31 of the jack fixing portion 30 is inserted into the sheath hole 11, and a rotary operation tool (not shown) is inserted from the opening 35 a of the fixing frame 35, and the operation shaft portion 32 a of the internal bolt 32 is connected. When rotated, top 3
4 move to the left, the expanding pieces 31b... Spread in a bulk shape, and come into contact with the inner surface of the sheath hole 11 to fix the pipe 31. As described above, in this embodiment, the jack fixing portion 30 can be fixed to the box culvert 10 with a simple configuration. In removing the jack fixing portion 30, the reverse operation of the above operation may be performed.

[0015] As shown in FIG.
Numeral 0 mainly includes a cylinder 41, a first pressure oil hole 41a and a second pressure oil hole 41b attached to the cylinder 41, and a push rod (piston) 48 which projects or retracts from the cylinder 41 by hydraulic pressure. Such an oil jack 40 itself is not new. The oil jack 40 has the first hinge 42 as described above.
Are provided, and the first connection frame 44 is provided via the first connection pin 43.
, And is connected to the fixing frame 35 on the jack fixing portion 30 side. The push rod 48 of the oil jack 40 is provided with a second connection frame 47 via a second connection pin 46 constituting a second hinge 45.

The supply of the pressure oil to the oil jack 40 is performed by the oil pump 20 via the oil hose 21. The supply to the first pressure oil hole 41a and the second pressure oil hole 41b is performed by an electromagnetic switching valve ( (Not shown), switching is performed at regular intervals. Therefore, the push rod 48 repeats “project” and “retract” from the cylinder 41 at substantially regular intervals.

In particular, in the above operation, the electromagnetic switching valve is
It is desirable that the setting is made so that the flow of oil is switched between forward and reverse by sensing the maximum oil pressure of the oil pump 20.
Further, the maximum hydraulic pressure value of the oil pump 20 is set to change the pressing force on the box culvert 10,
It is desirable that it can be changed as appropriate.

Next, the reaction force receiving portion 50 will be described with reference to FIGS. The reaction force receiving portion 50 is connected to the push rod 48 of the oil jack 40 as described above. The base frame 51 of the reaction force receiving portion 50 is formed as a rectangular flat plate as a whole, and an opening portion 51c is formed in the contact portion of the rail 2 so as to be slidably mounted and engaged on the rail 2. . The right rail holding frame 5 is located on the right side of the lower surface of the base frame 51 (the right side in the traveling direction of the reaction force receiving portion 50, the left side in FIG. 7).
2 a is arranged to surround one side surface of the rail 2. On the upper surface of the base frame 51, a right vertical frame 53a and a left vertical frame 53b are erected along the length direction of the rail 2, and the left and right vertical frames 53a,
Horizontal elongated holes 53c, 53c are respectively formed in 53b.

A right horizontal frame 54a and a left horizontal frame 54b are provided upright on the upper surface of the base frame 51 outside the left and right vertical frames 53a and 53b. As shown in FIG. 11, an engagement frame 55 is detachably mounted on the base frame 51 below the left horizontal frame 54b. 8 to 10 in the horizontal slots 53c.
As shown in FIG. 7, a sliding pin 57 is slidably inserted, one end of horizontal rods 58, 58 is connected to the sliding pin 57, and a receiving frame 59 is attached to the other end. The receiving frames 59 are provided with mounting holes 60..., And the second connecting frames 47 are mounted in the mounting holes 60.

An operating link 61,
One end of the link 61 is connected, and the other end of the operating link 61 is pivotally attached to one end of the rotating link 62. The rotary links 62, 62 are connected to link shafts 6 of left and right vertical frames 53a, 53b.
3, 63 are attached to the shaft. The rotating links 62, 62
Is formed in a substantially U-shape, the center of which is axially mounted on the link shaft 63, and a non-slip 64 having an uneven shape is formed on the lower side thereof. Therefore, when a pressing force is applied to the receiving frame 59 by the above configuration, the sliding pin 57 moves to the left in FIG.
With the upward movement of 1, the rotation link 62 rotates counterclockwise, and the non-slip 64 strongly contacts the upper surfaces of the rails 2, 2.

As shown in FIG. 11, the reaction force receiving portion 50
In order to attach to the rail 2, an engaging frame 55 is detachably formed on the base frame 51 by an engaging bolt 51 a and an engaging nut 51 b. The engagement frame 55 includes a left rail holding frame 56b that contacts the rail 2 and a horizontal frame 56a below the base frame contact frame 56 that contacts the base frame 1. Notches 56c, 56c are formed in the base frame contact frame 56.
Are formed at positions corresponding to the engagement bolts 51a, 51a. Note that a reinforcing plate 65 is integrally provided on the upper side of the left and right vertical frames 53a and 53b.

In this embodiment, in order to connect the box culverts 10 one after another in the above configuration, the rails 2 and 2 are laid when the base 1 is cast, and the box culverts are laid on the rails 2 and 2. Slide. When the box culvert 10 is pushed in, the pushing device A
This is performed using First, the oil pump 20 is placed on the box culvert 10 and the jack fixing portion 30
Are attached to the lower part of two right and left portions using the sheath holes 11 of the box culvert 10. The jack fixing portion 30 is attached by inserting a pipe 31 into the sheath hole 11 and operating the operating shaft portion 3.
The rotation of the expansion piece 34 by elastically deforming the expansion piece 31b by simply rotating the 2a causes the expansion piece 31b to be opened and fixed to the inner wall of the sheath hole 11.

The expanding piece 34 is rotated according to the inner diameter of the sheath hole 11 and its position is changed by the adjusting screw 33. With this change, the expanding piece 31b
・ The degree of opening can be changed. When the jack fixing portion 30 is removed, the jack fixing portion 30 can be easily removed by performing the reverse operation of the above operation, that is, the reverse rotation operation of the operation shaft portion 32a.
After fixing the jack fixing portion 30 to the box culvert 10, the first connection frame 44 of the oil jack 40 is connected to the fixing frame 35.

Next, the second connecting frame 47 connected to the push rod 48 of the oil jack 40 is connected to the receiving frame 59 on the reaction force receiving portion 50 side by using the mounting holes 60. Thereafter, the reaction force receiving portions 50 are mounted on the rails 2 and 2, respectively. As shown in FIG. 11, the base frame 51 is first placed on the rail, and then the engagement frame 55 is mounted. In the direction indicated by the arrow α, and the engaging frame 55 is engaged with the engaging bolt 51a.
And the fixing nut 51b. An interval is formed between the base frame 51 and the left and right rail holding frames 52a and 56b such that the reaction force receiving portion 50 can slide along the rails 2 and 2. Therefore, the non-slip 64 strongly abuts on the rail due to the projection of the push rod 48, and the reaction force receiving portion 50 is fixed to the rail 2. As a result, the box culvert 10 is moved along the rail 2 via the oil jack 40 as shown in FIG. Will be pressed and moved to the right.

In this state, the solenoid valve is connected to the cylinder 41
When the maximum oil pressure is detected, the flow of the pressure oil is reversed, and the push rod 48 is retracted, and the reaction force receiving portion 50
To the box culvert 10 side. Due to this pulling force, the rotating link 62 rotates clockwise, and as a result, the non-slip 64 comes off the rail, and the reaction force receiving portion 50 moves along the rail 2. Due to the protruding and retracting operations of the push rod 48, the movement of the box culvert 10 and the movement of the reaction force receiving portion 50 are performed automatically and intermittently, and the box culvert 10 is pushed.

The operator corrects the traveling direction of the box culvert 10 by operating the solenoid valve, and after the box culvert 10 is installed at a predetermined position, the operator operates the oil jack 40, the oil pump 20 and the like. It is sufficient to perform the returning operation, and labor saving of the pushing operation and improvement of safety can be expected.

As described above, the reaction force receiving portion 50 is fitted to the rails 2, 2 which are partially exposed and buried in the foundation 1, and the cylinder 41 of the oil jack 40 extends (the push rod 48 projects). Sometimes, the rail 2 is strongly pinched and receives the reaction force of the oil jack 40. When the cylinder 41 of the oil jack 40 contracts, the force holding the rails 2 and 2 is released. The force receiving portion 50 also moves and becomes a reaction force receiving when the cylinder 41 of the oil jack 40 is extended next time. In this case, the push-in device A is detected by a solenoid valve that detects the oil pressure of the oil jack 40 and automatically switches the oil outflow direction.
Is set between the rails 2 and 2 and the box culvert 10, and when the power is turned on, the box culvert 10 is automatically transported to the installation location.

In the means of the above embodiment, the base 1 is basically formed with a horizontal surface, but when the surface is formed with an inclination, the rails 2 and 2 of the box culvert 10 are used.
The upper pushing direction is to push from the high position to the low position. This is because the movement of the box culvert 10 becomes easy.

In the means of the above embodiment, the box culvert 10 may be easily moved by applying or spraying a sliding material such as grease on the sliding surface of the rail 2. Further, by forming an uneven surface on a portion other than the upper surface (sliding surface) of the rail 2, for example, on the back surface of the sliding surface, engagement and fixing of the reaction force receiving portion 50 described later may be facilitated. .

In addition to the means of the above-described embodiment, in order to slide the rebox culvert 10 along the rails 2, 2, a guide ridge is provided on the lower surface of the box culvert 10 adjacent to the rail 2, 2 contact position. And / or a guide groove may be formed. With this configuration, the box culvert 10 is easily displaced from the rails 2 and 2, and
Can be conveyed in parallel.

In the means of the above-described embodiment, the sheath fixing hole 30 is used to mount the jack fixing portion 30. As shown in FIG. 5, a U-shaped locking frame is formed on the side wall end portion 12 of the box culvert 10. 39 is a fixing bolt 39a
The fixed frame 38 integral with the locking frame 39 may be attached to the box culvert 10. The fixed frame 3
The oil jack 40 is attached by bolt holes 38a drilled in the same manner as in the previous embodiment. In this embodiment, the oil jack 40 is attached without being affected by the presence or absence of the sheath hole 11.

In the above embodiment, the non-slip 64 is fixed at the reaction force receiving portion 50 using the link mechanism. However, the link mechanism is not used, and as shown in FIG. By using the rotational moment (eccentric force) in the direction of arrow a applied to the force receiving portion 50 to engage the non-slip portions 64a and 64b at the upper and lower portions of the rail 2, the configuration of the reaction force receiving portion 50 can be improved. This can be greatly simplified, and the same effect as in the above embodiment can be expected.

In the above embodiment, the oil jack 4
Although 0 is mounted on the box culvert 10 side, it may be mounted on the reaction force receiving portion 50 side. In this case, the box culvert 10 is attached to the tip of the push rod 48. According to the seventh embodiment, the oil jack 40 and the reaction force receiving portion 50 can be set as one set, and the operability is further improved.

In the above embodiment, the reaction force receiving portion 50
Is provided separately on the left and right rails 2 and 2,
By integrally cooperating the respective base frames 51, 51, the reaction force receiving portions 50, 50 can be moved forward in parallel, and the box culvert 10 can be transported more smoothly.

[0035]

According to the present invention, the following effects can be obtained by the configuration described above. 1. According to the first aspect of the present invention, the rails 2 and 2 are simply laid on the base 1 and the known oil jack 40 is replaced with the box culvert 10 and the reaction force receiving portion 50.
Since the box culvert 10 can be automatically pushed in only by supplying the pressurized oil thereafter, the device is simple, the operation is easy, the workability is good, and a safe means is provided. It has come true.

2. According to the second aspect of the present invention, in addition to the above effects, the oil jack 40 is simply attached to the box culvert 10 and the reaction force receiving portion 50 is simply attached on the rail 2, so that the operation is further facilitated and workability is improved. good.

3. According to the third aspect of the present invention, the supply of oil pressure to the oil jack 40 causes the push rod 48 to protrude and retract, and automatically causes the reaction force receiving portion 50 to move to the rail 2.
As a result, it is possible to obtain a box culvert pushing device having an extremely simple structure.

[Brief description of the drawings]

FIG. 1 is an overall schematic explanatory view of an embodiment method according to the present invention.

FIG. 2 is a schematic side view of a pushing device used in the method.

FIG. 3 is a schematic front view of the device.

FIG. 4 is an explanatory view of a jack fixing portion of the device, showing an overall view (A), a plan view of the fixing frame portion (B), a front view of the expanding piece (C), and a front view of the operation shaft portion. The figure (D) and the side view (E) of an expansion top.

FIG. 5 is an explanatory view according to another embodiment of a jack fixing portion.

FIG. 6 is a side view (A) and a plan view (B) of an oil jack of the device.

FIG. 7 is a rear view of a reaction force receiving portion of the device.

FIG. 8 is a side view of a reaction force receiving portion of the device.

FIG. 9 is a plan view of a reaction force receiving portion of the device.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

FIG. 11 is an exploded view of a reaction force receiving portion of the device.

FIG. 12 is a plan view of a frame of the reaction force receiving portion.

FIG. 13 is a side view of a left vertical frame of the reaction force receiving portion.

FIG. 14 is a plan view of an engagement frame of the reaction force receiving portion.

FIG. 15 is a side view of an engagement frame of the reaction force receiving portion.

FIG. 16 is an explanatory view of another embodiment of the reaction force receiving portion.

[Explanation of symbols]

 A ... Pushing device 1 ... Base 2 ... Rail 10 ... Box culvert 11 ... Sheath hole 12 ... Side wall end 20 ... Oil pump 21 ... Oil hose 30 ...・ Jack fixing part 31 ・ ・ ・ Pipe 31a ・ ・ ・ Slit 31b ・ ・ ・ Expansion piece 31c ・ ・ ・ Inner screw 32 ・ ・ ・ Inner bolt 32a ・ ・ ・ Operation shaft part 33 ・ ・ ・ Adjustment screw 34 ・ ・ ・Opening top 34a Internal screw 35 Fixed frame 35a Opening 38 Fixed frame 38a Bolt hole 39 Locking frame 39a Fixed bolt 40 Oil jack 41 ・ ・ ・ Cylinder 41a ・ ・ ・ First pressure oil hole 41b ・ ・ ・ Second pressure oil hole 42 ・ ・ ・ First hinge 43 ・ ・ ・ First connection pin 44 ・ ・ ・ First connection frame 45 ・..Second hinge 46... Second connecting pin 47 ··· Second connecting frame 48 ··· Push rod (piston) 50 ··· Reaction force receiving portion 51 ··· Base frame 51a ··· Engaging bolt 51b ··· Engaging nut 51c ··· Opening 52a・ ・ ・ Right rail holding frame 53a ・ ・ ・ Right vertical frame 53b ・ ・ ・ Left vertical frame 53c ・ ・ ・ Horizontal slot 53d ・ ・ ・ Link shaft hole 54a ・ ・ ・ Right horizontal frame 54b ・ ・ ・ Left horizontal frame 55 ... engagement frame 56 ... base frame contact frame 56a (of the engagement frame) horizontal frame 56b (of the engagement frame) left rail holding frame 56c (of the engagement frame) Notch (of engagement frame) 57 sliding pin 58 horizontal rod 59 receiving frame 60 mounting hole 61 operating link 62 rotating link 63・ Link shaft 64 ・ ・ ・ Non-slip 65 ・ ・ ・ Reinforcement plate

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] January 6, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] box culvert push-inclusive device

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an underground water storage tank,
Underpass, underground cable tunnels relates push inclusive device box culvert being construction for sewerage.

[0002]

2. Description of the Related Art Conventionally, large machines such as cranes have been used for installation and installation work of box culverts for underground water storage tanks and the like. In some cases, the installation and installation work of the box culvert was hindered. As means for solving the above problems, if the conventional technologies are listed,
There are a pulling method using a winch, a single jack method, a bogie method and the like. In the pulling method using a winch, the box culvert is drawn in with a long wire rope, so that if the transport distance is long, it is difficult and lacks safety. In the push-in method using a single jack, the reaction force receiver is attached to the H-section steel buried in the foundation concrete by bolts and nuts one stroke at a time.
There was a problem that this installation was troublesome and workability was poor.

[0003] As a bogie construction method, for example, Patent No. 1
No. 623741 and Utility Model Registration No. 1801918 are proposed. However, this technique has a problem that it is necessary to provide a step between a bogie with an elevating device and a foundation concrete, which is costly. There is a disadvantage that workability is poor because it is heavy.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art. That is, when a box culvert is installed in a place where a crane operation cannot be performed, construction of the box culvert is difficult. and to provide a push-inclusive device safely and easily transfer to the construction site.

[0005]

According to the present invention, the following means are provided to achieve the above object. The pushing device for a box culvert according to claim 1 , wherein
A pump 20 and an oil operated by the oil pump 20.
Lujack 40 and a bobbin connected to the oil jack 40.
Through the sheath hole 11 drilled in the X-Culvert
And a jack fixing part 30 fixed on the base 1
Is mounted on the rail 2 that is movable and fixed.
The oil jack 40
The reaction force receiving portion 50 is connected to a push rod operated by pressure.
When the push rod 48 projects, the reaction force receiving portion 50
2 when the push rod 48 is retracted.
0 is configured to be movable on the rail 2 (hereinafter referred to as “Configuration P”).
The box culvert and the jack fixing part
When fixing the sheath 30, the sheath hole 11 is
Insert a pipe 31 integrated with the fixing portion 30 and
A fixed frame 35 is formed at one end of the fixed frame 31.
An opening 35a communicating with the hole of the pipe is provided at the center of 35.
The other end of the pipe 31 is formed through the opening 35a.
This is performed by opening the expanding piece 31b formed in the above.

According to a second aspect of the present invention, the box culvert pushing device is provided with
The base frame 51 placed on the rail 2
The holding frames 52a and 52b are arranged along the length direction of the rail 2.
And one rail holding frame 52a is fixed to the base frame 51.
The other rail holding frame 52b is
It is provided on an engagement frame 55 which is detachably formed.
It is characterized by the following.

[0007] The box culvert of claim 3, wherein is
Box carburetor to slide along
Adjacent to the rail 2 and 2 contact positions on the lower surface of the seat 10,
Characterized by forming an inner convex strip and / or a guide concave strip
You .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, FIG.
3 will be described. The concrete base 1 is cast at a position where the box culverts 10 are connected and installed.
At the time of the casting, rails 2 made of H-shaped steel are previously placed on the base 1.
2 by approximately 50mm exposed from base 1 side embedded, placing a box culvert 10 on the rails 2, Before moving the heretofore construction site by pushing device A.

In the pushing device A, the oil jack 40 connected to the oil pump 20 is installed and fixed on the box culvert 10, and a push rod (piston) 48 of the oil jack 40 is connected to the reaction force receiving portion 50. By mounting the reaction force receiving portion 50 on the rails 2 and 2 so as to be movable and fixed, the push rod 48 protrudes to fix the reaction force receiving portion 50 to the rails 2 and 2 so that the box culvert 10 is moved to the rails 2 and 2. , 2 to be pressed and slid.

First, the pushing device A of this embodiment is installed.
At the time of the construction, the foundation 1
To form When forming the base 1, the rails 2 and 2 are laid in advance as described above. Further, since the box culvert 10 is slid along the length direction of the rails 2, 2, the upper surfaces of the rails 2, 2 need to be smooth. Box culvert 1 applied to this device
0 may be a known one. That is, as shown in Figure 1-3, the box culvert 10, that have a sheath holes 11 are formed.

The oil pump 20 is mounted on the box culvert 10. An oil hose 21 is connected to the oil pump 20 via a solenoid valve (not shown), and supplies pressure oil to first and second pressure oil holes 41a and 41b of an oil jack 40 described later. The oil pump 20 moves together with the box culvert 10, and after the box culvert 10 is set in an appropriate fixed position, the oil pump 20 is driven by wheels and installed on the next box culvert 10.
In fixing the jack fixing portion 30 to the box culvert 10, the sheath hole 11 is used. That is, the pipe 31 of the jack fixing portion 30 is inserted into the sheath hole 11 and the expanding piece 31b of the pipe 31 is opened.

As shown in FIG. 4 (A), the jack fixing portion 30 is mainly composed of a pipe 31 having a cylindrical cross section and made of a material having metal elasticity such as steel. And FIG.
As you shown (B), the rectangular plate-shaped fixing frame 35 is mounted in a T-shape with respect to the pipe 31 is formed in a side view C-type to the left end portion of the pipe 31. An opening 35a is formed at the center of the fixed frame 35 in communication with the hole of the pipe. The fixed frame 35 is provided on the first side of the oil jack 40.
The connection frame 44 is detachably engaged. The first connection frame 44
Forms a first hinge 42, and is rotatably supported by a first connecting pin 43 . At the right end of the pipe 31, as shown in FIG. 4C, four slits 31a are formed along the axis of the pipe 31, and as a result, expanded pieces 31b are formed. Have been.

An internal screw 31c is provided in the cylinder of the pipe 31, and an internal bolt 32 is rotatably supported by the internal screw 31c. An operation shaft portion 32a having a rectangular cross section as shown in FIG. 4D is formed at the left end of the internal bolt 32, and an adjustment screw 33 is provided at the right end thereof.
Are formed. As shown in FIG. 4 (E), an expanding piece 34 having a conical surface is screwed into the adjusting screw 33 via its inner screw 34a. The conical surface is in contact with the inner surface of the end of the expanding piece 31b.

With the above configuration, the pipe 31 of the jack fixing portion 30 is inserted into the sheath hole 11, and a rotary operation tool (not shown) is inserted from the opening 35 a of the fixing frame 35, and the operation shaft portion 32 a of the internal bolt 32 is connected. When rotated, top 3
4 move to the left, the expanding pieces 31b... Spread in a bulk shape, and come into contact with the inner surface of the sheath hole 11 to fix the pipe 31. As described above, in this embodiment, the jack fixing portion 30 can be fixed to the box culvert 10 with a simple configuration. In removing the jack fixing portion 30, the reverse operation of the above operation may be performed.

[0015] As shown in FIG.
Numeral 0 mainly includes a cylinder 41, a first pressure oil hole 41a and a second pressure oil hole 41b attached to the cylinder 41, and a push rod (piston) 48 which projects or retracts from the cylinder 41 by hydraulic pressure. Such an oil jack 40 itself is not new. The oil jack 40 has the first hinge 42 as described above.
Are provided, and the first connection frame 44 is provided via the first connection pin 43.
, And is connected to the fixing frame 35 on the jack fixing portion 30 side. The push rod 48 of the oil jack 40 is provided with a second connection frame 47 via a second connection pin 46 constituting a second hinge 45.

The supply of the pressure oil to the oil jack 40 is performed by the oil pump 20 via the oil hose 21. The supply to the first pressure oil hole 41a and the second pressure oil hole 41b is performed by an electromagnetic switching valve ( (Not shown), switching is performed at regular intervals. Therefore, the push rod 48 repeats “project” and “retract” from the cylinder 41 at substantially regular intervals.

In particular, in the above operation, the electromagnetic switching valve is
It is desirable that the setting is made so that the flow of oil is switched between forward and reverse by sensing the maximum oil pressure of the oil pump 20.
Further, the maximum hydraulic pressure value of the oil pump 20 is set to change the pressing force on the box culvert 10,
It is desirable that it can be changed as appropriate.

Next, the reaction force receiving portion 50 will be described with reference to FIGS. The reaction force receiving portion 50 is connected to the push rod 48 of the oil jack 40 as described above. The base frame 51 of the reaction force receiving portion 50 is formed as a rectangular flat plate as a whole, and an opening portion 51c is formed in the contact portion of the rail 2 so as to be slidably mounted and engaged on the rail 2. . The right rail holding frame 5 is located on the right side of the lower surface of the base frame 51 (the right side in the traveling direction of the reaction force receiving portion 50, the left side in FIG. 7).
2 a is arranged to surround one side surface of the rail 2. On the upper surface of the base frame 51, a right vertical frame 53a and a left vertical frame 53b are erected along the length direction of the rail 2, and the left and right vertical frames 53a,
Horizontal elongated holes 53c, 53c are respectively formed in 53b.

A right horizontal frame 54a and a left horizontal frame 54b are provided upright on the upper surface of the base frame 51 outside the left and right vertical frames 53a and 53b. As shown in FIG. 11, an engagement frame 55 is detachably mounted on the base frame 51 below the left horizontal frame 54b. 8 to 10 in the horizontal slots 53c.
As shown in FIG. 7, a sliding pin 57 is slidably inserted, one end of horizontal rods 58, 58 is connected to the sliding pin 57, and a receiving frame 59 is attached to the other end. The receiving frames 59 are provided with mounting holes 60..., And the second connecting frames 47 are mounted in the mounting holes 60.

An operating link 61,
One end of the link 61 is connected, and the other end of the operating link 61 is pivotally attached to one end of the rotating link 62. The rotary links 62, 62 are connected to link shafts 6 of left and right vertical frames 53a, 53b.
3, 63 are attached to the shaft. The rotating links 62, 62
Is formed in a substantially U-shape, the center of which is axially mounted on the link shaft 63, and a non-slip 64 having an uneven shape is formed on the lower side thereof. Therefore, when a pressing force is applied to the receiving frame 59 by the above configuration, the sliding pin 57 moves to the left in FIG.
With the upward movement of 1, the rotation link 62 rotates counterclockwise, and the non-slip 64 strongly contacts the upper surfaces of the rails 2, 2.

As shown in FIG. 11, the reaction force receiving portion 50
In order to attach to the rail 2, an engaging frame 55 is detachably formed on the base frame 51 by an engaging bolt 51 a and an engaging nut 51 b. The engagement frame 55 includes a left rail holding frame 56b that contacts the rail 2 and a horizontal frame 56a below the base frame contact frame 56 that contacts the base frame 1. Notches 56c, 56c are formed in the base frame contact frame 56.
Are formed at positions corresponding to the engagement bolts 51a, 51a. Note that a reinforcing plate 65 is integrally provided on the upper side of the left and right vertical frames 53a and 53b.

In this embodiment, in order to connect the box culverts 10 one after another in the above configuration, the rails 2 and 2 are laid when the base 1 is cast, and the box culverts are laid on the rails 2 and 2. Slide. When the box culvert 10 is pushed in, the pushing device A
This is performed using First, the oil pump 20 is placed on the box culvert 10 and the jack fixing portion 30
Are attached to the lower part of two right and left portions using the sheath holes 11 of the box culvert 10. The jack fixing portion 30 is attached by inserting a pipe 31 into the sheath hole 11 and operating the operating shaft portion 3.
The rotation of the expansion piece 34 by elastically deforming the expansion piece 31b by simply rotating the 2a causes the expansion piece 31b to be opened and fixed to the inner wall of the sheath hole 11.

The expanding piece 34 is rotated according to the inner diameter of the sheath hole 11 and its position is changed by the adjusting screw 33. With this change, the expanding piece 31b
・ The degree of opening can be changed. When the jack fixing portion 30 is removed, the jack fixing portion 30 can be easily removed by performing the reverse operation of the above operation, that is, the reverse rotation operation of the operation shaft portion 32a.
After fixing the jack fixing portion 30 to the box culvert 10, the first connection frame 44 of the oil jack 40 is connected to the fixing frame 35.

Next, the second connecting frame 47 connected to the push rod 48 of the oil jack 40 is connected to the receiving frame 59 on the reaction force receiving portion 50 side by using the mounting holes 60. Thereafter, the reaction force receiving portions 50 are mounted on the rails 2 and 2, respectively. As shown in FIG. 11, the base frame 51 is first placed on the rail, and then the engagement frame 55 is mounted. In the direction indicated by the arrow α, and the engaging frame 55 is engaged with the engaging bolt 51a.
And the fixing nut 51b. An interval is formed between the base frame 51 and the left and right rail holding frames 52a and 56b such that the reaction force receiving portion 50 can slide along the rails 2 and 2. Therefore, the non-slip 64 strongly abuts on the rail due to the projection of the push rod 48, and the reaction force receiving portion 50 is fixed to the rail 2. As a result, the box culvert 10 is moved along the rail 2 via the oil jack 40 as shown in FIG. Will be pressed and moved to the right.

In this state, the solenoid valve is connected to the cylinder 41
When the maximum oil pressure is detected, the flow of the pressure oil is reversed, and the push rod 48 is retracted, and the reaction force receiving portion 50
To the box culvert 10 side. Due to this pulling force, the rotating link 62 rotates clockwise, and as a result, the non-slip 64 comes off the rail, and the reaction force receiving portion 50 moves along the rail 2. Due to the protruding and retracting operations of the push rod 48, the movement of the box culvert 10 and the movement of the reaction force receiving portion 50 are performed automatically and intermittently, and the box culvert 10 is pushed.

The operator corrects the traveling direction of the box culvert 10 by operating the solenoid valve, and after the box culvert 10 is installed at a predetermined position, the operator operates the oil jack 40, the oil pump 20 and the like. It is sufficient to perform the returning operation, and labor saving of the pushing operation and improvement of safety can be expected.

As described above, the reaction force receiving portion 50 is fitted to the rails 2, 2 which are partially exposed and buried in the foundation 1, and the cylinder 41 of the oil jack 40 extends (the push rod 48 projects). Sometimes, the rail 2 is strongly pinched and receives the reaction force of the oil jack 40. When the cylinder 41 of the oil jack 40 contracts, the force holding the rails 2 and 2 is released. The force receiving portion 50 also moves and becomes a reaction force receiving when the cylinder 41 of the oil jack 40 is extended next time. In this case, the push-in device A is detected by a solenoid valve that detects the oil pressure of the oil jack 40 and automatically switches the oil outflow direction.
Is set between the rails 2 and 2 and the box culvert 10, and when the power is turned on, the box culvert 10 is automatically transported to the installation location.

In the means of the above embodiment, the base 1 is basically formed with a horizontal surface, but when the surface is formed with an inclination, the rails 2 and 2 of the box culvert 10 are used.
The upper pushing direction is to push from the high position to the low position. This is because the movement of the box culvert 10 becomes easy.

In the means of the above embodiment, the box culvert 10 may be easily moved by applying or spraying a sliding material such as grease on the sliding surface of the rail 2. Further, by forming an uneven surface on a portion other than the upper surface (sliding surface) of the rail 2, for example, on the back surface of the sliding surface, engagement and fixing of the reaction force receiving portion 50 described later may be facilitated. .

In addition to the means of the above embodiment, in order to slide along the user box culverts 10 to rails 2,
Guide ridges and / or guide ridges may be formed adjacent to the rails 2 and 2 contact positions on the lower surface of the box culvert 10. With this configuration, the box culvert 10 can be easily transported in parallel along the rails 2 and 2 without shifting from the rails 2 and 2.

In the means of the above-described embodiment, the sheath fixing hole 30 is used to mount the jack fixing portion 30. As shown in FIG. 5, a U-shaped locking frame is formed on the side wall end portion 12 of the box culvert 10. 39 is a fixing bolt 39a
The fixed frame 38 integral with the locking frame 39 may be attached to the box culvert 10. The fixed frame 3
The oil jack 40 is attached by bolt holes 38a drilled in the same manner as in the previous embodiment. In this embodiment, the oil jack 40 is attached without being affected by the presence or absence of the sheath hole 11.

[0032] In the above Symbol embodiment, oil jack 4
Although 0 is mounted on the box culvert 10 side, it may be mounted on the reaction force receiving portion 50 side.

In this case, the box culvert 10 is attached to the tip of the push rod 48. According to this embodiment can be one set of the the oil jack 40 and the reaction force receiving portion 50, further improving the operability.

In the above embodiment, the reaction force receiving portion 50
Is provided separately on the left and right rails 2 and 2,
By integrally cooperating the respective base frames 51, 51, the reaction force receiving portions 50, 50 can be moved forward in parallel, and the box culvert 10 can be transported more smoothly.

[0035]

According to the present invention, the following effects can be obtained by the configuration described above. 1. According to the first aspect of the present invention, a box culvert
In fixing the jack fixing part,
Insert a pipe integrated with the jack fixing part into the hole,
A fixed frame is formed at one end of the
An opening is formed in the portion in communication with the hole of the pipe, and the opening is formed in the opening.
Open the expanding piece formed at the other end of the pipe through the
And can be performed.

2. According to the invention described in claim 2, the above effect is obtained.
In addition to the results, the base
The frame has left and right rail holding frames along the length of the rail.
One rail holding frame is fixed to the base frame.
The other rail holding frame is detachable from the base frame.
By being provided on the formed engagement frame,
Part can be freely attached to and detached from the rail.
You.

3. According to the invention of claim 3, the box
The sculvert moves the bob to slide along the rails.
Adjacent to the rail contact position on the bottom of the X-Culvert,
By forming guide ridges and / or guide ridges,
The sculvert can be easily
Can be transported in parallel along the line.

[Brief description of the drawings]

FIG. 1 is an overall schematic explanatory view of a pushing device according to an embodiment of the present invention.

FIG. 2 is the schematic side view of the push-inclusive device.

FIG. 3 is a schematic front view of the device.

FIG. 4 is an explanatory view of a jack fixing portion of the device, showing an overall view (A), a plan view of the fixing frame portion (B), a front view of the expanding piece (C), and a front view of the operation shaft portion. The figure (D) and the side view (E) of an expansion top.

FIG. 5 is an explanatory view according to another embodiment of a jack fixing portion.

FIG. 6 is a side view (A) and a plan view (B) of an oil jack of the device.

FIG. 7 is a rear view of a reaction force receiving portion of the device.

FIG. 8 is a side view of a reaction force receiving portion of the device.

FIG. 9 is a plan view of a reaction force receiving portion of the device.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

FIG. 11 is an exploded view of a reaction force receiving portion of the device.

FIG. 12 is a plan view of a frame of the reaction force receiving portion.

FIG. 13 is a side view of a left vertical frame of the reaction force receiving portion.

FIG. 14 is a plan view of an engagement frame of the reaction force receiving portion.

FIG. 15 is a side view of an engagement frame of the reaction force receiving portion.

[Description of Signs] A: Pushing device 1: Base 2 ... Rail 10 ... Box culvert 11 ... Sheath hole 12 ... Side wall end 20 ... Oil pump 21 ... Oil hose 30 ・ ・ ・ Jack fixing part 31 ・ ・ ・ Pipe 31a ・ ・ ・ Slit 31b ・ ・ ・ Expansion piece 31c ・ ・ ・ Inner screw 32 ・ ・ ・ Inner bolt 32a ・ ・ ・ Operation shaft part 33 ・ ・ ・ Adjustment Screw 34 ・ ・ ・ Expansion top 34a ・ ・ ・ Inner screw 35 ・ ・ ・ Fixed frame 35a ・ ・ ・ Opening 38 ・ ・ ・ Fixed frame 38a ・ ・ ・ Bolt hole 39 ・ ・ ・ Locking frame 39a ・ ・ ・ Fixed Bolt 40 Oil jack 41 Cylinder 41a First pressure oil hole 41b Second pressure oil hole 42 First hinge 43 First connection pin 44 First 1 connecting frame 45 ... second hinge 46 ... first Connection pin 47 ... Second connection frame 48 ... Push rod (piston) 50 ... Reaction force receiving part 51 ... Base frame 51a ... Engagement bolt 51b ... Engagement nut 51c ... Opening 52a Right rail holding frame 53a Right vertical frame 53b Left vertical frame 53c Horizontal long hole 53d Link shaft hole 54a Right horizontal frame 54b Left horizontal frame 55 ... engagement frame 56 ... base frame contact frame (of engagement frame) 56a ... horizontal frame (of engagement frame) 56b ... left rail holding (of engagement frame) Frame 56c Notch (of engagement frame) 57 Sliding pin 58 Horizontal bar 59 Receiving frame 60 Mounting hole 61 Working link 62 Rotation Link 63: Link shaft 64: Non-slip 65: Reinforcement plate

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Deleted

Claims (3)

[Claims] When installing a box culvert, an oil pump is used in a box culvert push-in method for laying rails near a planned installation position and moving the box culvert along the rails. Oil jack 40 connected to 20
Is installed between the box culvert 10 and the reaction force receiving portion 50, and the reaction force receiving portion 50 is mounted on the rail 2 so as to be movable and fixed, and the push rod 48 of the oil jack 40 projects, A box culvert pushing-in method, wherein the reaction force receiving portion 50 is fixed to the rail 2 and the box culvert 10 is pressed and slid on the rail 2. 2. The oil jack 40 is mounted on the box culvert 10 and a push rod 48 of the oil jack 40 is provided.
2. The method of pushing a box culvert according to claim 1, wherein the box culvert is connected to the reaction force receiving portion 50. 3. An oil pump 20 and the oil pump 2
0, an oil jack 40, a jack fixing portion 30 connected to the oil jack 40 and fixed to the box culvert, and a reaction force movably and fixedly arranged on the rail 2 installed on the base 1. The reaction force receiving portion 50 is connected to a push rod that is actuated by the oil pressure of the oil jack 40. When the push rod 48 projects, the reaction force receiving portion 50 is fixed to the rail. A pushing device for a box culvert, characterized in that the reaction force receiving portion (50) is configured to be movable on the rail (2) at the time of retraction of (48).