JP3127435B2 - Concrete member pushing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an underground water storage tank,
Underpass, underground cable tunnels relates push inclusive device of the concrete member is construction for sewerage.

[0002]

2. Description of the Related Art Conventionally, large-sized machines such as cranes have been used for installation and installation of concrete members for underground water storage tanks and the like. In some cases, installation and installation work of concrete members was hindered. As means for solving the above-mentioned problems, the conventional techniques are listed as a pulling method using a winch, a single jack method, a pushing method using a bogie method, or the like. The pull-in method using a winch
To pull in the concrete member with a long wire rope,
If the transport distance is long, there is a problem that 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. However, this installation is troublesome and there is a problem that workability is 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 make a step or the like between a bogie with an elevating device and a foundation concrete, so that it takes a lot of cost, and furthermore, the bogie itself is not used. 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 concrete member is installed in a place where a crane operation cannot be performed, the concrete member is used. 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 pressing device for a concrete member according to claim 1 is an oil pump.
Pump 20 and oil operated by the oil pump 20
A jack 40 and a connector connected to the oil jack 40
It is fixed through the sheath hole 11 formed in the cleat member.
Di Yakki fixing portion 30 to be constant, it is placed on the base 1
Reaction force receiver movably and fixedly mounted on the rail 2
And the oil pressure of the oil jack 40
The reaction force receiving portion 50 is connected to the push rod
When the push rod 48 projects, the reaction force receiving portion 50 is attached to the rail 2.
When the push rod 48 is retracted, the reaction force receiving portion 50 is fixed.
It is configured to be movable on the rail 2 (hereinafter referred to as "Configuration P").
U), and furthermore, a jack fixing portion 30 is attached to the concrete member.
In fixing the jack, a jack is inserted into the sheath hole 11.
A pipe 31 integrated with the fixing part 30 is inserted, and the pipe 31 is inserted.
A fixed frame 35 is formed at one end of the fixed frame 35.
An opening 35a communicating with the hole of the pipe is formed at the center of
And is formed at the other end of the pipe 31 through the opening 35a.
It is performed by opening the formed expansion piece 31b.
And

According to a second aspect of the present invention, in addition to the structure P of the first aspect , the concrete member pushing device further includes a base frame 51 mounted on the rail 2 in the reaction force receiving portion 50, with a left and right side.
The right rail holding frames 52a and 56b are arranged along the length direction of the rail 2, one rail holding frame 52a is fixed to the base frame 51, and the other rail holding frame 56b is
Engagement frame 55 horizontally detachably formed with respect to 1
It is characterized by being provided in.

[0007] Incidentally, the subject to a pushing device of the present invention "concrete member" outside the box culvert exemplified as the following examples, the concrete segments,
It can be applied to all concrete products and semi-finished products such as concrete blocks.

[0008]

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

The push-in device A mounts and fixes an oil jack 40 connected to the oil pump 20 on the concrete member 10 and pushes the oil jack 40 with a push rod (piston).
48 is connected to the reaction force receiving portion 50 and the reaction force receiving portion 50 is mounted on the rails 2 and 2 so as to be movable and fixed. Concrete member 1 fixed to rails 2 and 2
0 is pressed on rails 2 and 2 to slide.

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 on the site as described above. In addition, since the concrete member 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 concrete member 10 applied to the present apparatus may be a known one. That is, as shown in Figure 1-3, the concrete member 10, that has the sheath holes 11 are formed.

The oil pump 2 is placed on the concrete member 10.
Place 0. The oil pump 20 has a solenoid valve (not shown).
The oil hose 21 is connected to the oil jack 40 via a first oil supply port, and supplies pressure oil to first and second pressure oil holes 41a and 41b of the oil jack 40 described later. The oil pump 20 includes the concrete member 1
After moving together with 0, the concrete member 10 is set at an appropriate fixed position, then sent by wheels, and set on the next concrete member 10. In fixing the jack fixing portion 30 to the concrete member 10, the sheath hole 11 is used. That is, the sheath hole 11
First, the pipe 31 of the jack fixing portion 30 is inserted, 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, and is attached to the pipe 31 in a T-shape. 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, four slits 31a are formed along the axis of the pipe 31, as shown in FIG. 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, according to the present embodiment, the jack fixing portion 30 can be securely fixed to the concrete member 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, it is desirable that the maximum hydraulic pressure value of the oil pump 20 can be appropriately changed in order to change the pressing force on the concrete member 10.

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, and the left side in FIG.
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 concrete members 10 one after another in the above configuration, the rails 2 and 2 are laid when the base 1 is cast.
2 is performed by sliding a concrete member. The pushing of the concrete member 10 is performed using the pushing device A. First, the oil pump 20 is connected to the concrete member 10.
At the same time, the jack fixing part 30 is attached to the lower left and right portions of the concrete member 10 using the sheath holes 11. Attachment of the jack fixing portion 30 is performed by inserting the pipe 31 into the sheath hole 11 and moving the expanding piece 34 by simply rotating the operation shaft portion 32 a to elastically deform the expanding piece 31 b to open the sheath hole 11. Fix to the inner wall.

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 concrete member 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 protrusion of the push rod 48, and the reaction force receiving portion 50 is fixed to the rail 2. As a result, the concrete member 10 moves 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 concrete member 10 side. This pulling force causes the rotating link 62 to rotate 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. By the pushing and retracting operation of the push rod 48, the movement of the concrete member 10 and the movement of the reaction force receiving portion 50 are performed automatically and intermittently, and the concrete member 10 is pushed.

The worker corrects the direction of movement of the concrete member 10 by operating the solenoid valve, and after the concrete member 10 is installed at a predetermined position, uses 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, 2 and the concrete member 10,
When the power is turned on, the concrete member 10 is automatically transported to the installation location.

In the means of the above embodiment, the surface of the base 1 is basically formed horizontally, but when the surface is formed inclined, the pushing direction of the concrete member 10 on the rails 2 and 2 is as follows. Push in from the high position to the low position. This is because the movement of the concrete member 10 becomes easy.

In the means of the above embodiment, the concrete member 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 concrete member 10 along the rails 2, 2, adjacent to the rail 2, 2 contact position on the lower surface of the concrete member 10, a guide ridge or a guide ridge is provided. And / or a guide groove may be formed. With this configuration, the concrete member 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, but as shown in FIG. The fixing frame 39 may be fixed to the concrete member 10 by fixing the fixing frame 39 with the fixing bolt 39a. An oil jack 40 is attached by bolt holes 38a formed in the fixing frame 38 in the same manner as in the above 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 the 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 this 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 advanced in parallel, and the concrete member 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 concrete member
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 reaction force receiving
The base frame placed on the rail at the
Is located along the length of the rail.
The rail holding frame is fixed to the base frame and the other rail holding
The frame is formed so as to be detachable horizontally with respect to the base frame.
By being provided in the joint frame, the reaction force receiving part
Thus, it can be detachably arranged in a horizontal state.

[0037]

[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: Concrete member (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 frame 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 Connection frame 45: second hinge 46 · 2nd connecting pin 47 ··· 2nd 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 elongated hole 53d Link shaft hole 54a Right horizontal frame 54b ··· Left horizontal frame 55 ··· Engaging frame 56 ··· (base frame abutting frame) 56a · · · (of engaging frame) 56b · · · (of engaging frame) Left rail holding frame 56c: 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 reinforcing plate

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-10-102570 (JP, A) JP-A-10-330098 (JP, A) JP-A-4-371498 (JP, A) JP-A-56- 82709 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B66F 3 / 24,19 / 00 E03F 3/06

Claims (2)

(57) [Claims] An oil pump (20) and an oil pump (2)
And a jack fixing portion 30 connected to the oil jack 40 and fixed through the sheath hole 11 formed in the concrete member.
And a reaction force receiving portion 50 movably and fixedly arranged on the rail 2 installed on the base 1. The reaction force receiving portion 50 is provided on a push rod operated by the oil pressure of the oil jack 40. The reaction force receiving portion 50 is fixed to the rail 2 when the push rod 48 projects, and the reaction force receiving portion 50 is configured to be able to move on the rail 2 when the push rod 48 is retracted (hereinafter referred to as “Configuration P”). Further, when fixing the jack fixing portion 30 to the concrete member, a pipe 31 integrated with the jack fixing portion 30 is inserted into the sheath hole 11.
The fixed frame 35 is formed at one end of the pipe 31, and an opening 35 a communicating with a hole of the pipe is formed at the center of the fixed frame 35, and the pipe is inserted through the opening 35 a. A concrete member pushing-in device, wherein the pressing is performed by opening an expanding piece 31b formed at the other end of the member 31. 2. In addition to the constitution P described in claim 1, the base frame 51 mounted on the rail 2 in the reaction force receiving portion 50 has left and right rail holding frames 52a, 56b having the length of the rail 2. The one rail holding frame 52a is fixed to the base frame 51 and the other rail holding frame 56b
Is provided on an engagement frame 55 which is formed horizontally and detachably with respect to the base frame 51 .