JP2010133202A - Swing jack mounting structure and cotter whirl-stop plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a swing jack mounting structure enabling a large and heavy jack to be swung without causing fall-down using a cotter whirl-stop plate and the cotter whirl-stop plate used for the mounting structure. <P>SOLUTION: Ends of the jack 2 are attached to poles 3 or frames 10 at both ends of a soil retaining panel with a swing connection device 5. The whirl-stop plate 7 of a cotter 52 is assembled to the mounting part of the swing connection device 5. The swing connection device 5 includes a connector member 51 which is inserted into the mounting hole of the pole 3 or the frame 10 and rotated to be secured, a fixed side member 50 joined to the connector member 51 with the fitting cotter 52, and a swing side member 54 connected to the fixed side member 50 through a hinge mechanism 53. The end of the jack 2 is joined to the swing side member 54. The whirl-stop plate 7 of the cotter 52 includes a cotter holding part 73 for constraining the position of the cotter 52 and a through-hole 70 through which the fixed side member 50 extends. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, when burying a pipe burying groove in the ground in order to embed a gas pipe for city gas or a water pipe for water and sewage underground, the side walls of the excavated groove are not collapsed. In the earthing device to be installed, folding is performed so that the end of the jack that supports the pillars of the earthing panel or the frame material at both ends of the earthing panel from the inside is rotated (swinging) to a position parallel to the earthing panel as necessary. It belongs to the technical field of mounting structure of swing type jacks that can be operated, especially speaking, a swing type jack that uses a cotter detent plate to swing without falling down even with large and heavy weight jacks. And a cotter detent plate used in the mounting structure.

  As shown in FIG. 1, as an example, the earth retaining device used for excavating a pipe burying groove includes two earth retaining panels 1 and 1 arranged side by side, and a plurality of jacks 2 for supporting the earth retaining panels from the inside. It consists of and. 1 is an example of a structure in which jacks 2... Support pillars 3 and earthing panel 1 is built between pillars 3 and 3 juxtaposed in the longitudinal direction of the groove for burying pipes. Although shown, the earth retaining device having a structure in which the earth retaining panel (see, for example, FIG. 10) provided with the frame material at both ends is used without using the support column 3 and the frame material is supported by the jack is almost the same. To be implemented.

When the pipe embedding groove is excavated using the above earth retaining device, the presence of the jack 2 becomes an obstacle when a pipe body such as a gas pipe or a water and sewer pipe is embedded in the excavation groove. Therefore, the jack 2 is temporarily released from the support state only during the pipe embedding work, and is swung to a position parallel to the earth retaining panel 1 (rotated, folded, and retracted). Of course, the jack that has been temporarily swung is subjected to an operation of returning it to the normal support state after the tube body is lowered into the groove.
For this reason, it has been conventionally practiced that the jack 2 is attached to the frame members at both ends of the support column or the earth retaining panel using a swing type connecting device having a swing hinge mechanism. The structure which attached the jack of the earth retaining device to the support | pillar or the frame material of both ends of the earth retaining panel using the said swing type coupling tool and the said coupling tool is described in the following patent documents 1, 2, for example.

In Patent Document 1 below, in a mounting structure of a swing-type jack in which a jack is attached to a support using a swing-type connector having a swing hinge mechanism, a support or a connector stopper plate and a connector facing the support are provided. Or the structure which provides a stopper between the rotation parts and prevents dripping at the time of swing operation | movement is disclosed.
Further, the swing-type jack mounting structure disclosed in the following Patent Document 2 includes a cotter that connects a connector latched to a groove opening formed in a column of a retaining panel and a fixed-side member of the swing-type jack, The swing side member is connected to the fixed side member by a swing hinge mechanism, and the end of the swing type jack is attached to the support column.

Japanese Patent No. 2881372 JP 2004-257149 A

As described above, various structures for attaching the swing type jack of the earth retaining device are already known. However, it has already been pointed out that when the swing-type jack becomes large and heavy, the free end side of the jack tilts downward during the swing operation, so-called dripping occurs. If drooping occurs during the swing operation of the swing type jack, even if the pulling work for swinging the jack is performed, the swing operation is insufficient and the retraction effect is deteriorated. If the pipe body is lowered into the groove without the swing-type jack being sufficiently retracted and the pipe body hits the jack, not only will the obstruction work be disturbed, but the pipe body may be damaged.
Therefore, the invention of the above-mentioned Patent Document 1 aims to solve the problem by a structure in which a stopper is provided between the support column or the connector stopper plate and the connector facing the support plate or the rotating portion thereof to prevent dripping during the swing operation. ing. However, such a solution cannot be applied to prevent drooping of the swing type jack of the existing earth retaining device, and is not a practical solution.
Further, it is worth noting that the swing-type jack mounting structure disclosed in Patent Document 2 also employs a swing-type connector. However, it cannot be said that the configuration is sufficient as an effective measure for preventing dripping when a large and heavy jack is used.

An object of the present invention is to prevent a large-sized and heavy-weight jack from dripping during a swing operation by using a cotter detent plate that can be easily applied to a mounting structure of a swing-type jack of an existing earth retaining device. It is to provide a mounting structure for a swing type jack.
A further object of the present invention is to provide a cotter detent plate that can be easily applied to an existing swing-type jack mounting structure and is useful for preventing dripping during swinging of the swing-type jack.

As a means for solving the above-described problem, the mounting structure of the swing type jack according to the invention described in claim 1 is:
The earth retaining panel 1 to be built using the pillar 3 or the earth retaining panel 1 ′ having the frame members 10 at both ends, and the plurality of jacks 2 that support the frame members 10 at both ends of the pillar 1 or the earth retaining panel from the inside. In the structure of attaching the end part of the jack 2 of the earth retaining device installed along the both side walls of the excavation groove to the frame material 10 at both ends of the pillar 3 or the earth retaining panel in a swingable manner.
The end of the jack 2 is attached to the support 3 constituting the earth retaining device or the frame members 10 at both ends of the earth retaining panel by the swing type coupler 5 having a swing hinge mechanism. The detent plate 7 of the cotter 52 is assembled to the mounting portion.
The swing-type connector 5 is coupled by a connector member 51 that is inserted into the mounting holes 3a or 10a of the frame member 10 at both ends of the support column 3 or the earth retaining panel and stopped by rotation, and the connector member 51 and a mating cotter 52. The fixed side member 50 and the fixed side member 50 are configured by a swing side member 54 connected via a swing hinge mechanism 53, and an end portion of the jack 2 is coupled to the swing side member 54. Being
The detent plate 7 of the cotter 52 includes a cotter holding portion 73 that restrains the position of the cotter 52 that connects the connector member 51 and the fixed-side member 50 of the swing-type connector 5, and fixing the swing-type connector 5. It is a configuration having a through hole 70 through which the side member 50 passes,
The rotation stop plate 7 is assembled by fitting the through hole 70 to the fixed side member 50 and is not rotated to the frame material 10 at both ends of the support column 3 or the earth retaining panel, and the connector member 51 and the fixed side member 50 are installed. The position of the cotter 52 coupled to the rotation stop plate 7 is held by the cotter holding portion 73 of the rotation stop plate 7 and the position thereof is restricted in the rotation stop state.

The invention described in claim 2 is the mounting structure of the swing type jack described in claim 1,
The detent plate 7 of the cotter 52 has both side surfaces of the support column 3 constituting the earth retaining device held by the flange portions 77, or at least one side edge of the detent plate 7 on the frame members 10 at both ends of the earth retaining panel. It is set in a state where it does not rotate in contact with the formed convex portion 11 or by a rotation stopper provided on the frame member 10 at both ends of the support column 3 or the earth retaining panel.
The invention described in claim 3 is the mounting structure of the swing type jack described in claim 1 or 2,
The detent plate 7 of the cotter 52 is configured as a split type that bisects the through hole 70 through which the fixed side member 50 of the swing-type connector 5 is passed, and the two split members 71 and 72 are divided in half. The circular hole 70a is fitted to the fixed side member 50 from both sides and assembled into a single circular hole, and the two divided members 71 and 72 are connected by a connecting means 75.

The detent plate of the cotter of the swing type connector according to the invention described in claim 4,
A cotter 52 that joins the fixed side member 50 of the swing-type connector 5 and the connector member 51 for attaching the jack 2 of the earthing device to the support 3 constituting the earthing device or the frame material 10 at both ends of the earthing panel is prevented. A detent plate 7 for restraining the state,
A cotter holding portion 73 that restrains the position of the cotter 52 that joins the fixed side member 50 and the connector member 51 of the swing type coupler to a non-rotating state, and a through hole 70 through which the fixed side member 50 of the swing type coupler 5 passes. Have
The through-hole 70 is fitted and assembled to the fixed side member 50, and is installed in a state where it does not rotate to the frame material 10 at both ends of the pillar 3 or the earth retaining panel constituting the earth retaining device,
The cotter 52 in which the connector member 51 and the fixed-side member 50 are coupled to each other is characterized in that the cotter 52 is held by the cotter holding portion 73 of the rotation stopper plate 7 and the position thereof is restricted to the rotation stop state.

According to a fifth aspect of the present invention, in the detent plate for the cotter of the swing type connecting device according to the fourth aspect,
The rotation stopper plate 7 includes flange portions 77 that hold both side surfaces of the support column 3 constituting the earth retaining device. The flange portion 77 holds the both side surfaces of the support column 3 so as not to rotate. It is characterized by being.
The invention described in claim 6 is the detent plate of the cotter of the swing type connecting device described in claim 4 or 5,
The rotation stopper plate 7 is configured as a divided type in which the through hole 70 through which the fixed-side member 50 constituting the swing type connector 5 is passed is divided into two equal parts, and the two divided members 71 and 72 are divided into the two equal parts. The semicircular hole 70a is connected to the fixed side member 50 from both sides so as to be completed into a single circular hole, and the connecting means 75 is provided for coupling.
The invention described in claim 7 is the detent plate of the cotter of the swing-type connector according to any one of claims 4 to 6,
The cotter holding portion 73 of the rotation stop plate 7 is formed as a convex portion standing on the rotation stop plate 7, and the cotter holding portion 73 is held through a notch-shaped groove 73 a for holding the cotter 52 or the cotter 52. It is characterized by a configuration in which holes are provided.
The invention described in claim 8 is the detent plate of the cotter of the swing type connecting device according to any one of claims 4 to 7,
The rotation stopper plate 7 is provided with a cotter receiving portion 74 as a convex portion in such a manner that the cotter holding portion 73 and the through hole 70 are opposed to each other with the cotter holding portion 73 interposed therebetween. The holding part 73 is formed to have a height substantially equal to the cotter support height.

The swing-type jack mounting structure according to the first to third aspects of the present invention includes a swing-type coupling device in which the end of the swing-type jack 2 is connected to the frame members 10 at both ends of the support column 3 or the retaining panel constituting the earth retaining device. 5, the cotter detent plate 7 is assembled to the fixed side member 50 of the swing-type connector 5, and the cotter is installed so as not to rotate to the frame 3 at both ends of the support column 3 or the earth retaining panel. Since the cotter 6 in which the fixed side member 50 and the connector member 4 are coupled to the cotter holding part 73 of the rotation stopper plate 7 is held and the position thereof is restricted in the rotation prevention state, the swing type jack 2 is large and heavy. In addition, it is possible to structurally prevent the swing-type coupler 5 (the hinge mechanism 53) from being tilted or rotationally displaced, and to prevent the jack 2 from dripping during the swing operation. .
Moreover, since the jack mounting structure of the present invention is configured to be implemented by assembling the rotation stopper plate 7 of the cotter 52 to the fixed side member 50 of the swing type coupler 5, the mounting structure of the swing type jack of the existing earth retaining device is implemented. Since it can be easily applied and implemented and the dripping of the jack 2 during the swing operation can be prevented in the same manner, it can be widely applied to the current pipe embedding work and contribute to smooth and efficient construction.
That is, when the swing type jack mounting structure according to the present invention is implemented, when the swing type jack 2 is swung in order to embed the pipe body in the excavation groove, the jack 2 is surely required without dripping. Since it is sufficiently retracted in a posture parallel to the earth retaining panel 1 and does not require the labor of repeating the pulling operation several times, work efficiency can be improved. Then, as a result of the swing-type jack 2 being retracted sufficiently and sufficiently, the burying operation of lowering the pipe body into the groove can be smoothly proceeded, and there is no possibility that the pipe body hits the jack and is damaged.

  Moreover, the cotter detent plate 7 according to the inventions described in claims 4 to 8 can be manufactured at low cost because of its simple structure. Moreover, since it is easy to use in the field and can be easily applied to the swing-type jack mounting structure of an existing earth retaining device, it is widely effective in preventing the swing action of the swing-type jack from dripping.

The earth retaining panel 1 to be built using the pillar 3 or the earth retaining panel 1 ′ having the frame members 10 at both ends, and the plurality of jacks 2 that support the frame members 10 at both ends of the pillar 1 or the earth retaining panel from the inside. And the end of the jack 2 of the earth retaining device installed along the both side walls of the excavation groove is implemented in a structure that swingably attaches to the support 3 or the frame material 10 at both ends of the earth retaining panel.
The end portion of the jack 2 is attached to the supporting column 3 constituting the earth retaining device or the frame members 10 at both ends of the earth retaining panel by the swing type coupling device 5 having a swing hinge mechanism 53. The rotation stopper plate 7 of the cotter 52 is assembled to the mounting portion.
The swing-type connector 5 is coupled by a connector member 51 that is inserted into the mounting holes 3a or 10a of the frame member 10 at both ends of the support column 3 or the earth retaining panel and stopped by rotation, and the connector member 51 and a mating cotter 52. The fixed side member 50 and the fixed side member 50 are configured by a swing side member 54 connected via a swing hinge mechanism 53, and an end portion of the jack 2 is coupled to the swing side member 54.
The detent plate 7 of the cotter 52 passes through the cotter holding portion 73 that restrains the position of the cotter 52 that couples the connector member 51 and the fixed side member 50, and the fixed side member 50 of the swing type connector 5. This is a configuration having holes 70.
The anti-rotation plate 7 is assembled in such a manner that the through hole 70 is fitted to the fixed side member 50 of the swing-type connector 5 and is not rotated to the frame material 10 at both ends of the support column 3 or the earth retaining panel. And the cotter 52 which couple | bonded the said connector member 51 and the stationary-side member 50 is hold | maintained to the cotter holding | maintenance part 73 of the said rotation stop plate 7, and restrains the position to a rotation stop state.

Hereinafter, the present invention will be described based on illustrated embodiments.
As for the earth retaining device shown in FIG. 1, as already outlined in the background art section, the earth retaining panel 1 is erected using the pillar 3, and the end of the swing-type jack 2 is supported by the swing-type connector 5. 3 is attached. The mounting structure is shown in FIGS. 2 to 5 as an embodiment of the present invention. First, the configuration and function of the swing type coupler 5 will be outlined.
As shown in the exploded state of the configuration of the main part of the mounting structure in FIG. 3, the connector member 51 constituting the swing type coupler 5 has a substantially T-shaped connector head 51 a at its tip, and is formed on the column 3. It is already known that the connector head 4a is inserted vertically into the mounting elongated hole 3a and rotated about 90 ° so that the connector head 51a is oriented horizontally to be hung on the back surface of the column 3. It has been.
The connector member 4 is closely fitted into the through hole 50e at the center of the fixed side member 50 that constitutes the same swing-type connector 5. Then, when the cotter hole 50d of the rectangular socket portion 50c of the fixed side member 50 and the cotter hole 51b of the connector member 51 are made to coincide with each other and a tapered cotter 52 having a certain inclination is inserted, as shown in FIG. By the wedge action 6, the connector head 51 a is firmly attracted to the back surface of the column 3, and the fixed member 50 is firmly coupled to the column 3. The fixed side member 50 includes a hard rubber seat 50b that stably contacts the fixed side member 50 to the support column 3 on the back surface side of the base plate 50a of the rectangular socket portion 50c.
Further, a retaining pin 55 is inserted to prevent the cotter 52 from being inserted into the cotter hole 50d of the rectangular socket portion 50c and the cotter hole 51b of the connector member 51 (FIG. 3). And FIG. 5).

Next, the swing side member 54 constituting the swing type connecting tool 5 is connected to the fixed side member 50 and the swing hinge mechanism 53 so that FIG. 4 can be easily understood.
That is, the swing side member 54 includes hinge sockets 53b for inserting the two hinge pins 53a and 53a at both ends. On the other hand, the base plate 50a of the fixed-side member 50 is also provided with a hinge socket 53f in a corresponding arrangement. By aligning both the hinge sockets 53b and 53f and inserting the two hinge pins 53a, Assembling of the swing type coupler 53 is completed.
However, the connected state in which the two hinge pins 53a and 53a are connected as described above is a state in which the swing side member 54 is fixed (non-swing state). Then, as shown in FIG. 4, when one hinge pin 53a is pulled out, the remaining one hinge pin 53a becomes a hinge shaft (rotating shaft), and the swing side member 54 is in a state in which a swing operation is possible.
The swing side end portion of the jack 2 is inserted into the connecting socket portion 54a provided integrally with the front portion of the swing side member 54, and is connected by connecting the connecting pin 9.

The cotter detent plate 7 is used on the premise of the configuration of the swing-type connector 5 described above.
As shown in FIG. 3, the rotation stopper plate 7 has a circular through hole 70 (see FIG. 8A) that penetrates the hard rubber seat 50b and the base plate 50a constituting the stationary member 50 of the swing-type connector 5. Have. The through hole 70 directly contacts the outer surface of the support column 3 with the hard rubber seat 50b of the fixed side member 50 to transmit the force of the jack 2 directly to the support column 3, and the rotation stopper plate 7 of the cotter is fixed to the fixed side member 50. It is for enabling assembly.
The cotter detent plate 7 shown in FIG. 3 has two divided members 71 that are divided into two vertically along a diameter line passing through the center of a circular through hole 70 (see FIG. 8A) located at the center thereof. 72. The anti-rotation plate 7 in the illustrated example is a flange portion that prevents rotation by holding both side surfaces of the column 3 on both side edges of the flat plate on the assumption that the mounting target of the swing type jack 2 is the column 3 described above. 77 and 77 are configured to stand up toward the back surface. The diameter of the circular through hole 70 is substantially the same diameter (as an example, 123 mm) or slightly larger than the outer diameter of the hard rubber seat 50b and the base plate 50a of the fixed side member 50 of the swing type connector 5. Has been. The reason is that the work of assembling the rotation stopper plate 7 to the stationary member 50 is easy and the installation state is stable.

The detailed configuration of the rotation stopper plate 7 is as shown in detail in FIGS.
First, the dividing member 71 shown in FIGS. 6A and 6B shows one divided into two along a diameter line passing through the center of the circular through hole 70 (see FIG. 8). The cotter holding portion 73 is integrally formed as a convex portion standing on the surface side of the half member 71 at a central portion along the circumference of the semicircular hole portion 70a. Is provided with a notch-shaped cotter receiving groove 73a that inserts the cotter 52 and securely holds the cotter 52 in a non-rotating state at a depth (for example, a depth of about 25 mm) that is necessary and sufficient for the anti-rotation action of the cotter 52. . Further, at both side positions of the circumference of the semicircular hole portion 70a, a connecting arm 75 protruding in the tangential direction of the circumference is installed along the plate surface as a connecting means between the divided members, and connected to the tip portion thereof. Bolts 75a are provided vertically.

  Next, the divided member 72 shown in FIGS. 7A and 7B is the other divided into two along the diameter line passing through the center of the circular through hole 70. Again, the flange portions 77 and 77 that hold both side surfaces of the support column 3 to prevent rotation are erected in the back surface direction. A cotter on which the opposite end of the cotter 52 is placed when the cotter 52 is held in the cotter receiving groove 73a of the dividing member 71 of FIG. 6 at the central portion along the circumference of the semicircular hole portion 70a. The receiving part 74 is provided as a convex part standing on the surface side of the half member 72 in such a manner that the holding part 73 and the through hole 70 of the cotter are opposed to each other with the receiving part 74 therebetween. Further, at both side positions of the circumference of the semicircular hole portion 70a, when the semicircular hole portions 70a of both the semicircular hole portions 70a become a perfect circular through hole 70 in combination with the dividing member 71 of FIG. A total of two screw holes 78 into which the connecting bolts 75a are screwed are provided at positions where the centers coincide with the connecting bolts 75a provided in the section.

A cotter detent plate in which the two divided members 71 and 72 are combined so that the semicircular hole portions 70a are completely circular, and are connected by connecting bolts 75a and 75a of the two left and right connecting arms 75 and 75. The assembled state of 7 is shown in FIGS. 8A and 8B.
The jack mounting structure using the cotter detent plate 7 having the above-described configuration is implemented as follows.
Although there are various procedures for the jack mounting structure, as an example procedure, the connector member 51 shown in FIG. 3 is first fitted into the through hole 50e of the fixed side member 50, and both the cotter holes 51b and 50d are made to coincide with each other. 52 is assumed to be temporarily fixed. Then, the head portion 51a of the connector member 51 is inserted into the attachment long hole 3a of the support column 3 that supports the earth retaining panel 1, and is rotated by about 90 ° from the vertical posture to the horizontal posture in FIG. Then, the head portion 51 a of the connector member 51 is firmly latched to the back surface side of the column 3. At this point, the cotter 52 is in a substantially vertical posture (FIGS. 2 and 4).

Thereafter, the two split members 71 and 72 constituting the cotter detent plate 7 are held by the flange portions 77 and 77 standing on the respective back surfaces of the fixed side member 50 with respect to the fixed side member 50. In this state, the support 3 is brought into contact with the support 3 and is slid as it is to approach the hard rubber seat 50b and the base plate 50a of the stationary member 50.
In this way, the upper-side divided member 71 that is brought close to the hard rubber seat 50b and the base plate 50a of the fixed side member 50 causes the upper end portion of the cotter 52 to enter the cotter receiving groove 73a provided in the cotter holding portion 73. . This operation is the same even when the hole for allowing the cotter 52 to enter the cotter holding portion 73 is provided, and the upper end of the cotter 52 is allowed to enter the hole.
Since the cotter 52 is still in the temporarily fixed state in the above-described work stage, the work of entering the upper end of the cotter 52 into the cotter receiving groove 73a can be easily performed while adjusting the directionality appropriately. .
Conversely, the lower end portion of the cotter 52 is placed on and supported by the cotter receiving portion 74 of the lower split member 72. For this reason, the height of the bottom of the cotter receiving groove 73a and the height of the upper surface of the cotter receiving portion 74 are substantially equal (see FIG. 5).
Thereafter, the two divided members 71 and 72 are connected to each other when the semicircular hole portions 70a are in a complete circular state with the fixed side member 50 (the hard rubber seat 5b and the base plate 5a). The connecting bolt 75a provided at the distal end of the arm 75 is integrated into one rotation stopper plate 7 by screwing it into the screw hole 78 of the other party (see FIG. 8). And the installation work is finished.

At the stage where the assembly and installation work of the cotter detent plate 7 is completed as described above, the cotter 52 in the temporarily fixed state is inserted deeply and sufficiently as shown in FIG. The member 50 is firmly fixed to the column 3. Then, if necessary, it is preferable to attach a retaining pin 55 to the tip of the cotter 52 to ensure the safety of the work after the dredging.
Incidentally, as shown in FIG. 5, the cotter 52 inclined in a tapered shape (wedge shape) has its non-inclined surface side on the cotter holding portion 73 (the groove bottom of the cotter receiving groove 73 a) and the cotter receiving portion 74. To support. Thus, since the cotter 52 is supported at both ends by the cotter receiving groove 73a and the cotter receiving part 74 of the cotter holding part 73, the groove bottom of the cotter receiving groove 73a and the height of the cotter receiving part 74 (the surface of the cotter detent plate 7). (Height from) are equally configured. On the other hand, on the inclined surface side of the cotter 52, the connector head 51a is strongly pulled by the wedge action that pushes into the hole edge formed at the same inclination angle in the cotter hole 51b of the connector member 51 as shown in FIG. The purpose of fixing the fixed side member 50 to the support column 3 by pressing strongly to the back surface side of the mounting elongated hole 3a in the support column 3 is achieved.

As a result, the vertical position of the cotter 52 is firmly held by the cotter holding portion 73 (the cotter receiving groove 73a) of the rotation stopper plate 7, and the position of the cotter 52 is surely restrained so as not to be rotationally displaced.
Therefore, the positional relationship between the fixed side member 50 and the swing side member 54 of the swing type coupler 5 is firmly held and restrained through the cotter 52 so as not to be rotationally displaced. Therefore, even if the swing-type jack 2 is large and heavy, it does not cause a problem of dripping during the swing operation.

  In addition, although description of the said Example centered on the procedure which fixes the fixed side member 50 to the support | pillar 3 previously, it is not this limitation. Whether the fixed side member 50 and the swing side member 54 are connected in advance by the hinge mechanism 53, or the swing side end portion of the jack 2 is further inserted into the connection socket portion 54a of the swing side member 54, and the connection pin The procedure of whether or not to attach the jack 2 in a state where the jack 2 is connected in advance with 9 is determined by the work procedure planned by the person in charge at the site.

Next, FIGS. 9A and 9B show a second embodiment of the cotter detent plate. Most of the configuration of the rotation stopper plate 7 ′ of the second embodiment is divided into two divided members 71 and 72 at the position of the diameter line passing through the center of the circular through-hole 70, including the above-described implementation. Since it is common with the rotation stopper plate 7 of Example 1, the common code | symbol is attached | subjected to a common structure and the overlapping description is abbreviate | omitted.
The difference from the rotation stopper plate 7 of the first embodiment is that, in short, there is no flange portion that rises from the both side portions of the divided members 71 and 72 to the back surface side.
Example 2 of the swing type jack mounting structure using the rotation stopper plate 7 'of Example 2 is shown in FIG.
The earth retaining panel 1 ′ of FIG. 10 has a frame material 10 instead of a support column integrally joined to both ends thereof, and the swing jack 2 is attached to the frame material 10.
In the case of the second embodiment, the cotter detent plate 7 ′ is arranged so that one side edge (the right side edge in FIG. 10) is in close contact with the flat bar 11 formed as a convex portion on the outer end of the frame member 10. Installed in a non-rotating state. Therefore, the flange part of Example 1 is useless.

  However, the frame member of the earth retaining panel 1 ′ in which the detent plate 7 or 7 ′ of the cotter having the above structure is integrally joined to the pillar 3 constituting the earth retaining device or the frame material 10 for the pillar substitute to both ends. The means for installing in a state where it does not rotate to 10 is not limited to the configuration in which the flange 77 is provided or the flat bar 11 is relied upon. For example, similarly to the flat bar 11 of the earth retaining panel 1 ′, a protrusion (stopper or the like) that stops one side edge or a plurality of edges of the anti-rotation board 7 ′ so as not to rotate is provided at a necessary position, or the anti-rotation board. A stopper means (for example, a bolting or a latching mechanism) for fastening itself to the support column 3 or the frame material 10 for the support column can be adopted and similarly implemented.

As another different embodiment, the diameter of the through-hole 70 of the cotter detent plate 7 or 7 ′ is formed to have a sufficient margin for mounting work compared to the outer diameter of the fixed member 50 of the swing-type connector 5. And it is also possible to implement by the structure of a single board. That is, when attaching the swing-type connecting device 5 to the frame members 10 at both ends of the support column 3 or the retaining plate 1 ′, the through holes of the anti-rotation plates 7 or 7 ′ are previously provided with the hard rubber seat 50 b or the base of the fixed side member 50. Even if the cotter 52 is held on the cotter holding portion 73 of the detent plate 7 or 7 ′ after the fixed side member 50 is fixed to the support with the connector member 51 after being fitted to the outer periphery of the plate 50 a and assembled, Can be installed without dropping. In other words, the rotation stop plate of the cotter can be implemented in exactly the same way with a single plate structure without being divided into two parts.
Regarding the cotter holding portion 73 of the cotter rotation stop plate 7 or 7 ′, in addition to the configuration in which the notched cotter receiving groove 73 a is provided, a shape suitable for holding the cotter 52 and restraining the position of the cotter holding portion 73. It can implement similarly by the structure which provided the hole of this, and the component equivalent to this.

  Although the present invention has been described based on the illustrated embodiment, the present invention is not limited to the configuration of the above embodiment. In the range which does not deviate from the object and the gist of the present invention, it will be noted that it includes a range of design changes and application variations made by those skilled in the art as needed.

It is the perspective view which showed an example of the earth retaining apparatus. It is the perspective view which showed the attachment structure of the swing type jack which concerns on this invention. It is the perspective view which decomposed | disassembled and showed the main component parts of the said attachment structure. It is a perspective view which shows the state which swung the jack with the said attachment structure. It is vertical sectional drawing which shows the attachment structure of a swing type jack. A and B are the front view and bottom view which show one division member which comprises the detent plate of a cotter. A and B are the front view and bottom view which show the other division member which comprises the detent plate of a cotter. A and B are a front view and a bottom view showing a state of assembly and use of the cotter detent plate. A and B are the front view and bottom view which show the Example from which the rotation stopper plate of a cotter differs. It is a perspective view which shows the Example which applied Example 2 of the said rotation prevention board to the attachment structure of the swing type jack in the swing state of a jack.

Explanation of symbols

1, 1 'earth retaining panel
2 Jack (Swing type jack)
3 Support 5 Swing type coupling 7 Stopper plate 10 of cotter Frame material 50 provided at both ends of earth retaining panel Fixed member 51 Connector member 52 Cutter 53 Swing hinge mechanism 54 Swing side member 73 Cotter holding portion 70 Through Hole 77 Flange part 11 Flat bar 71, 72 Dividing member 70a Semi-circular hole 75 Connecting means 74 Cotter receiving part

Claims (8)

It is composed of earth retaining panels to be built using pillars or earth retaining panels with frame members at both ends, and a plurality of jacks that support the frame members at both ends of the pillars or earth retaining panels from the inside, and both sides of the excavation groove In the structure where the end of the jack of the earth retaining device installed along the wall is swingably attached to the frame material at both ends of the pillar or the earth retaining panel,
The ends of the jacks are attached to the frame members on both ends of the earth retaining device or the earth retaining panel by a swing type coupling device having a swing hinge mechanism, and a cotter is attached to the mounting portion of the swing type coupling device. The rotation stop plate is assembled,
The swing-type connector includes a connector member that is inserted into the mounting holes of the frame members at both ends of the support column or the earth retaining panel and stopped by rotation, a fixed side member that is coupled to the connector member by a mating cotter, and the fixed side The member is composed of a swing side member connected via a swing hinge mechanism, and an end of the jack is coupled to the swing side member,
The detent plate of the cotter has a cotter holding part that restrains the position of the cotter that couples the connector member and the fixed side member of the swing type coupler, and a through hole through which the fixed side member of the swing type coupler passes. Configuration,
The detent plate is assembled by fitting its through hole to the fixed side member of the swing-type connector, and is installed in a state where it does not rotate to the frame material at both ends of the support column or the earth retaining panel, the connector member and the fixed side member, The swing-jack mounting structure is characterized in that the position of the cotter coupled with the rotator is held by the cotter holding portion of the rotation stop plate and the position thereof is restrained in the rotation stop state.   The detent plate of the cotter has both sides of the column constituting the earth retaining device held by the flanges, or at least one side edge of the detent plate to the convex portions formed on the frame members at both ends of the earth retaining panel. 2. The swing-type jack mounting structure according to claim 1, wherein the swing-type jack is installed in a non-rotating state by contact with each other or by a stopper for preventing rotation provided on a frame material at both ends of the support column or the earth retaining panel. .   The detent plate of the cotter is configured as a split type that bisects the through-hole through which the fixed side member of the swing-type connector is passed, and the two split members are divided into two sides of the semicircular hole into the fixed side member. 3. The swing jack mounting structure according to claim 1, wherein the two split members are joined together by connecting means, and assembled into a single circular hole. A detent that restrains the cotter that joins the fixed-side member of the swing-type connector and the connector member, and attaches the jack of the retaining device to the supports or the frame members at both ends of the retaining panel constituting the retaining device. A board,
A cotter holding part that restrains the position of the cotter that couples the fixed side member of the swing type coupling tool and the connector member to a non-rotating state, and a through hole through which the fixed side member of the swing type coupling tool passes,
The through-hole is fitted to the fixed side member and assembled, and is installed in a state where it does not rotate to the pillars constituting the earth retaining device or the frame members at both ends of the earth retaining panel,
The cotter in which the connector member and the fixed side member are combined is configured to be held by the cotter holding portion of the anti-rotation plate and to restrain its position in the anti-rotation state. Detent plate.   The detent plate includes a flange portion that holds both side surfaces of the column that constitutes the earth retaining device, and is installed in a state that the both side surfaces of the column are held by the flange portion so as not to rotate. A detent plate for a cotter of the swing type connecting device according to claim 4.   The anti-rotation plate is configured as a split type that bisects the through-hole through which the fixed-side member that constitutes the swing-type connector is passed, and the two split members are configured to divide the bisected semicircular hole into the fixed side. 6. A cotter detent plate for a swing type coupling device according to claim 4 or 5, further comprising coupling means for coupling to the member after being assembled into a single circular hole from both sides. .   The cotter holding part of the rotation stopper plate is formed as a convex part standing on the rotation stopper plate, and a notch-shaped groove for holding the cotter or a hole for holding it through the cotter is provided in the cotter holding part. A cotter detent plate for a swing-type coupler according to any one of claims 4 to 6, wherein   The rotation stopper plate is provided with a cotter receiving portion as a convex portion so as to face the cotter holding portion and the through hole, and the cotter receiving portion has a cotter support height of the cotter holding portion. The cotter detent plate of the swing type connecting device according to any one of claims 4 to 7, wherein the detent plate is formed at a height substantially equal to the height of the cotter.

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