JP3895637B2 - Anchor cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anchor cap used for rust prevention of an anchor head. More specifically, there is no excess or deficiency in the rust preventive material housed in the anchor cap mounted on the anchor head, and the anchor head is accurately covered with the rust preventive material by mounting the anchor cap, and the rust preventive action is achieved. The anchor cap is improved so that a large amount of rust-preventive material does not leak to the outside and damage the surrounding environment and landscape when installed.
[0002]
[Prior art]
As a rust prevention method for anchor heads exposed on the ground such as rock bolts and ground anchors, an anchor head is filled with a predetermined amount of rust prevention oil or other rust prevention material in the anchor cap at the construction site. Conventionally, a method of attaching to a part has been widely known. However, this conventional method has the following problems. First, as a quality problem, when a rust preventive material is packed in the anchor cap at the construction site, an operator manually removes the rust preventive oil such as grease from a large can with a scoop and plugs it into the anchor cap. Since the rust preventive oil was squeezed out from the resin tube by an appropriate amount and clogged in the anchor cap, it was practically difficult to accurately pack a predetermined amount of the rust preventive material. For this reason, there was a possibility that a predetermined amount of rust preventive oil could not be supplied to the anchor head, but when the anchor cap is attached, it is not possible to confirm how much rust preventive oil is contained on the appearance, There was a problem that a void more than expected was generated in the anchor cap, and a situation where the rust preventive effect by the rust preventive material could not be sufficiently exhibited occurred. Conversely, if the anchor cap is clogged with more than expected, the excess rust preventive oil will leak outside through the air vent hole when the anchor cap is attached to the anchor head. There was a problem of harming the surrounding environment and landscape. Further, as a problem related to workability, the above-described stuffing of the anticorrosive material into the anchor cap at the construction site takes time and becomes a factor that impairs workability. In addition, when using a can with a large capacity, there is also a problem that it is difficult to carry because of the large amount of construction on the slope. In particular, in the case of winter construction, there is a problem that the fluidity of rust preventive oil or the like is lowered and hardened, and it is further difficult to take out from a can or the like.
[0003]
[Problems to be solved by the invention]
The present invention was developed in view of the above-described conventional technical situation, and an appropriate amount of a rust preventive material can be easily and accurately accommodated in an anchor cap, and when mounted on an anchor head. There is no excess or deficiency in the rust preventive material accommodated in the anchor cap, and the anchor head is accurately covered with the rust preventive material by installing it, and a rust preventive action is secured, and a large amount of rust preventive material is externally attached The purpose of the present invention is to provide an anchor head rust prevention technique that does not leak to the surroundings and harms the surrounding environment and landscape, and that is also effective in reducing the work load at the construction site.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the invention of claim 1, the opening portion for mounting formed on the mounting side of the anchor cap on the anchor head is closed by the lid so that it can be opened, and on the opposite side of the opening portion for mounting. A technical means was adopted in which an air vent hole was provided, and a rust preventive material having the same amount as the space formed between the anchor cap and the anchor head was accommodated therein . According to the first aspect of the present invention, the work for housing the anticorrosive material in the anchor cap is carried out stably and efficiently in advance in a factory or the like where the work conditions are good, not in the construction site where the work is often difficult. Therefore, it is possible to greatly reduce the time and effort required to store the rust preventive material, and it is possible to easily and accurately accommodate an appropriate amount of the rust preventive material in the anchor cap. Therefore, at the construction site, an appropriate amount of rust preventive material accommodated in the anchor cap ensures the rust prevention effect, and excess rust preventive material beyond the preset amount flows out to the surroundings. Good construction without polluting can be achieved. In addition, since an appropriate amount of the rust preventive material has already been accommodated in the anchor cap, it is possible to greatly reduce the work load at the construction site.
[0005]
With respect to the lid for preventing the outflow from the mounting opening of the anticorrosive material accommodated in the A down car cap, membrane configured as ruptured by the anchor head itself by attachment to the anchor head of the anchor cap It is possible to use a film-like lid body (Claim 2 ) or a membrane-like lid body (Claim 3 ) configured to be broken by an operator when the anchor cap is attached to the anchor head. Further, peelably attached to the anchor cap side, constituting the lid as peeling upon attachment to the anchor head of the anchor cap (claim 4) and detachably screw-coupled to the anchor cap side, the anchor cap It is also possible to use a lid (Claim 5 ) that is configured to be removed when mounted on the anchor head.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention can be widely applied as an anti-rust anchor cap construction for various types of anchor heads regardless of the concrete anchor structure such as a rock bolt or a ground anchor using an uncurtain dong. is there. The specific shape and size of the anchor cap can be freely selected in relation to the anchor head as an application target. In addition, regarding the appropriate amount of the rust preventive material to be accommodated in the anchor cap, generally, the head portion of the anchor material such as a lock bolt or an uncurtain dong protruding from the inner volume of the anchor cap into the anchor cap, It can be obtained from the volume obtained by reducing the volume of the nut, washer, etc., that is, the volume of the space formed between the two when the anchor cap is applied to the anchor head. In addition, in order to maintain the rust-proofing effect on the anchor head, the range of the portion that needs to be covered with a rust-proofing material, and the prevention from flowing out from the air vent hole or the like when the anchor cap is attached to the anchor head A gap set to prevent rust material more reliably, or conversely, a small increment to set a small amount of rust preventive material to overflow from the air vent hole for more reliable filling of rust preventive material It is also possible to increase / decrease according to circumstances. That is, the accommodation amount of the rust preventive material in the anchor cap is set to be substantially the same as the space formed between the anchor cap and the anchor head. As for the type of rust preventive material, it is possible to use an appropriate rust preventive material depending on the case, such as semi-solid rust preventive materials such as greases, petrolatums, and asphalts, and powder rust preventive materials.
[0007]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view showing an anchor cap according to the present embodiment, and FIG. 2 is an attachment of the anchor cap to an anchor head. FIG. 3 is a longitudinal cross-sectional view showing a state in the middle, and FIG. 3 is a vertical cross-sectional view showing a state where the anchor cap is completely attached to the anchor head. As shown in FIG. 1, as the anchor cap 1 of the present embodiment, one formed in a bell shape from aluminum or the like was used. An air vent hole 2 is formed at the top of the anchor cap 1, and the air vent hole 2 is usually closed by screwing a closing bolt 3 into a female screw formed on the inner surface thereof. Further, a fitting groove was formed on the lower end surface 4 of the anchor cap 1 and a ring-shaped sealing material 5 was installed. Further, a female screw 6 for fixing to the anchor head is formed on the lower inner peripheral surface of the anchor cap 1.
[0008]
In the case of the present embodiment, an appropriate amount of an appropriate rust preventive material 7 is accommodated in advance inside the anchor cap 1 in a factory or the like with good working conditions, and the outflow prevention for preventing the rust preventive material 7 from flowing out to the outside. As a means, an opening for mounting on the anchor head on the lower surface is closed with a film-like lid body 8 such as an aluminum polyester film, which is characteristic in this respect. When the rust preventive material 7 is accommodated inside the anchor cap 1, an appropriate amount can be accommodated simply and accurately using a grease pump or the like. When the fluidity is low due to the type of rust preventive material 7 or the temperature, the fluid is heated to increase the fluidity and stored. When the accommodation work of the rust preventive material 7 in the anchor cap 1 is completed, the weight of the rust preventive material 7 is confirmed by weighing as necessary. When an appropriate amount of the rust preventive material 7 is accommodated in the anchor cap 1, a considerable gap is formed in the anchor cap 1 as an insertion space for an anchor head or the like as shown in the figure. . The peripheral portion of the film-like lid 8 is fixed to the inner side of the seal material 5 on the lower end surface 4 of the anchor cap 1 by adhesion or the like. In the case of the present embodiment, when the anchor cap 1 is mounted on the anchor head, the rust preventive material does not leak into the film-like lid body 8 so that the anchor head itself is torn equally. It is also effective to insert cross-shaped cuts and perforations.
[0009]
As described above, the anchor cap 1 with the rust preventive material in a state where the appropriate amount of the rust preventive material 7 is previously stored in the factory and the lower surface is closed by the film-like cover body 8 is left as it is to the construction site. As shown in FIG. 2, it is carried on the anchor head 10 which has been installed on the ground 9 and has finished introducing the tension. The anchor head 10 is formed of a portion where an anchor material 11 made of a rock bolt or the like fixed to the ground 9 is exposed to the ground through the opening 13 of the bearing plate 12. The exposed portion of the anchor material 11 is further formed with a seat plate 14 installed on the bearing plate 12 and a male screw that can be screwed onto the outer peripheral portion of the female screw 6 formed on the lower inner peripheral surface of the anchor cap 1. The threaded body 15 penetrates through each central opening and protrudes upward, and a tightening nut 17 having a convex spherical surface 16 is screwed into the protrusion to introduce a predetermined tension to act on the anchor member 11. It is configured as follows.
[0010]
And when introduction | transduction of the predetermined tension | tensile_strength with respect to the anchor material 11 installed in the ground 9 is complete | finished, as shown in FIG. 2, the anchor cap 1 is shown from the upper direction with respect to the anchor head 10 exposed on the ground. It will be worn to cover. In this case, in the present embodiment, the membrane-like lid body 8 is mounted in a state where the peripheral portion thereof is fixed to the lower end surface 4 of the anchor cap 1. Prior to mounting the anchor cap 1 to the anchor head 10, the rust preventive material 7 housed in the anchor cap 1 is shaken or shocked with the lid body 8 facing downward, and the lid body 8 side. And the air gap is collected on the upper air vent hole 2 side, and unnecessary air can easily escape from the air vent hole 2 as the anchor cap 1 is attached. As shown in FIG. 2, when the anchor cap 1 is gradually lowered from above so as to cover the anchor head 10 with the air vent hole 2 opened, the lid 8 is in the middle of the lowering. Comes into contact with the upper end portion of the anchor material 11, and the lid body 8 is broken by further lowering, and the upper portion of the anchor material 11 enters the rust preventive material 7 side. Eventually, as shown in FIG. 3, the entire anchor head 10 is inserted into the rust preventive material 7. In the above-described descending process of the anchor cap 1, the female screw 6 formed on the lower inner peripheral surface of the anchor cap 1 is screwed into a male screw formed on the outer peripheral surface of the screw body 15 to be fastened and fixed. Thus, the sealing material 5 installed on the lower end surface 4 of the anchor cap 1 is pressed against the upper surface of the seat plate 14 and fixed in a state in which the rust preventive material 7 is prevented from leaking. The film-like lid body 8 is torn off from the anchor cap 1 and mixed into the rust preventive material 7 in the process of tightening and fixing by screwing the female screw 6 of the anchor cap 1 and the male screw of the screw body 15. However, there is no particular problem with respect to rust prevention. When setting the appropriate amount of the rust preventive material 7 to be accommodated in the anchor cap 1, the rust preventive material 7 overflows from the air vent hole 2 at the final stage of tightening and fixing the anchor cap 1 as necessary. It is also possible to set so that the supply state of the rust preventive material 7 to 10 can be confirmed. In this case, the amount of the rust preventive material 7 flowing out from the air vent hole 2 is suppressed to the minimum necessary, and the amount of the rust preventive material 7 is set so that excess rust preventive material 7 does not flow out of the air vent hole 2. Set. Accordingly, if there is a rust preventive material 7 overflowing from the air vent hole 2, the air vent hole 2 is closed with a closing bolt 3. As described above, the anchor head 10 is accurately covered with the rust preventive material 7 to ensure the rust preventive action, and the leakage of the rust preventive material 7 is prevented by the press contact of the seal material 5 to the upper surface of the seat plate 14. In this state, the anchor cap 1 is fixed, and the mounting operation to the anchor head 10 is completed.
[0011]
In the first embodiment described above, a method in which the anchor head 10 itself is inserted into the rust preventive material 7 at the same time while breaking the film-like lid 8 when the anchor cap 1 is mounted is employed. As a second embodiment of the invention, it is also possible to adopt a system in which the membrane cap is torn by an operator and then attached to the anchor head 10 before the anchor cap 1 is attached to the anchor head 10. is there. In this case, for example, a circular opening is formed when a knob is provided such as a finger-hanging piece so that the operator can easily break the film-like lid, or when the operator pulls the knob. It is also effective to have cuts and perforations.
[0012]
4 and 5 show an anchor cap according to a third embodiment of the present invention. FIG. 4 is a longitudinal sectional view showing the anchor cap closed by the lid, and FIG. 5 is the lid. It is the longitudinal cross-sectional view which showed the state in the middle of peeling. The anchor cap 18 according to the present embodiment has the same configuration as the anchor cap 1. The anchor cap 18 accommodates an appropriate amount of the rust preventive material 19 inside in a factory or the like, and the inner portion of the seal material 21 on the lower end surface 20. A lid 22 made of the same material as that of the embodiment is attached in a peelable manner. When the lid 22 is bonded to the anchor cap 18, it can be melted more accurately by heating from above the lid 18 using a heating device such as an iron, or by heating the anchor cap 18 in advance. Can be worn. In the case of the anchor cap 18 of the present embodiment, as shown in FIG. 5, the lid 22 is peeled off from the lower end surface 20 before being attached to the anchor head 10. Other constructions are the same as those in the first embodiment. In the figure, reference numeral 23 denotes a knob used for peeling.
[0013]
FIG. 6 is a longitudinal cross-sectional view illustrating the lid body 22, and in this example, a peelable adhesive film that can be heat-sealed to the back surface of the base material 22 </ b> A made of an aluminum foil, a resin film, oil-resistant paper, or the like. The case where 22B was laminated | stacked was shown. The heat-fusible adhesive film 22B is preferably an ethylene-vinyl acetate copolymer, polyamide, polyester, or the like, and may be one in which a sticking imparting agent such as rubber or rosin is mixed. Moreover, it can replace with the adhesive film 22B and what applied the solvent type adhesive agent or the sealant type adhesive bond layer is applicable. Further, the lid for the anchor cap may be in an adhesive state.
[0014]
7 and 8 show an anchor cap according to a fourth embodiment of the present invention. FIG. 7 is a longitudinal sectional view thereof, and FIG. 8 is a bottom view thereof. The anchor cap 24 of the present embodiment has the same configuration as the anchor cap 1, and accommodates an appropriate amount of the rust preventive material 25 inside thereof at a factory or the like, and further, on the internal thread 26 formed on the lower inner peripheral portion thereof. The male screw portion 28 of the lid 27 is screwed and screwed. As shown in FIG. 7, the lid body 27 includes a contact plate 30 for the sealing material 29 installed on the lower end surface of the anchor cap 24, and the male screw portion 28 is screwed into the female screw 26 of the anchor cap 24. By tightening it, the contact plate 30 can be pressed against the sealing material 29 to further prevent the rust preventive material 25 from leaking. In the case of the anchor cap 24 of the present embodiment, the cap 27 is rotated before the male head 28 is removed from the female screw 26 before use. Other constructions are the same as those in the first embodiment. As shown in FIG. 8, a cross-shaped locking groove 31 is formed on the surface side of the lid 27, and when the lid 27 is fixed to or removed from the anchor cap 24, the engagement is provided. It is possible to simply rotate by locking an appropriate tool in the stop groove 31.
[0015]
9 and 10 show an anchor cap according to a fifth embodiment of the present invention. FIG. 9 is a longitudinal sectional view thereof, and FIG. 10 is a bottom view thereof. This embodiment is a modification of the fourth embodiment. The contact plate 30 is omitted and only the male screw portion 34 that can be screwed into the female screw 33 formed on the lower inner peripheral surface of the anchor cap 32 is used. A lid 35 is formed. As shown in FIG. 10, a cross-shaped locking groove 36 is formed on the surface side also in the case of the lid 35 of the present embodiment .
[001 6 ]
【The invention's effect】
According to the present invention, the following effects can be obtained.
(1) According to the first aspect of the present invention, the work for accommodating the rust preventive material in the anchor cap is stable and efficient in advance in a factory having good work conditions, not in a construction site where the work is often difficult. Therefore, it is possible to greatly reduce the time and effort required to store the rust preventive material, and to easily and accurately accommodate an appropriate amount of rust preventive material in the anchor cap without excess or deficiency. it can.
(2) In addition , the application of an appropriate amount of rust preventive material accommodated in the anchor cap when mounted on the anchor head ensures the rust preventive action, and more than the preset rust preventive material. It is possible to perform a good construction without causing the outside to flow out and pollute the surroundings, and the work load at the construction site can be greatly reduced.
( 3 ) According to the invention of claim 2 , since the anchored cap is attached to the anchor head, the membrane-shaped lid is broken by the anchor head itself, and the anchor head is inserted into the rust preventive material. Workability is very good.
( 4 ) According to the inventions of claims 3 to 5 , the membrane cap is torn, the lid is peeled off from the anchor cap side, or the screw is loosened and attached. It is possible to simply apply an appropriate amount of rust preventive material with no excess or deficiency when mounted on the anchor head.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an anchor cap according to a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a state where the anchor cap is being attached to the anchor head.
FIG. 3 is a longitudinal sectional view showing a state where the anchor cap is completely attached to the anchor head.
FIG. 4 is a longitudinal sectional view showing a state in which the cap of an anchor cap according to a third embodiment of the present invention is closed.
FIG. 5 is a longitudinal sectional view showing a state in the middle of peeling of the lid.
FIG. 6 is a longitudinal sectional view illustrating the lid body.
FIG. 7 is a longitudinal sectional view showing an anchor cap according to a fourth embodiment of the present invention.
FIG. 8 is a bottom view of the anchor cap.
FIG. 9 is a longitudinal sectional view showing an anchor cap according to a fifth embodiment of the present invention.
FIG. 10 is a bottom view of the anchor cap.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Anchor cap, 2 ... Air vent hole, 3 ... Blocking bolt, 4 ... Lower end surface, 5 ... Sealing material, 6 ... Female screw, 7 ... Rust prevention material, 8 ... Film-like cover body, 9 ... Ground, 10 DESCRIPTION OF SYMBOLS ... Anchor head, 11 ... Anchor material, 12 ... Supporting plate, 13 ... Opening part, 14 ... Seat plate, 15 ... Screw body, 16 ... Convex spherical part, 17 ... Clamping nut, 18 ... Anchor cap, 19 ... Antirust material, 20 ... lower end surface, 21 ... sealing material, 22 ... lid, 23 ... knob, 24 ... anchor cap, 25 ... antirust material, 26 ... female screw, 27 ... lid, 28 ... male screw , 29 ... Sealing material, 30 ... Contact plate, 31 ... Locking groove, 32 ... Anchor cap, 33 ... Female screw, 34 ... Male screw part, 35 ... Lid, 36 ... Locking groove

Claims (5)

The mounting opening formed on the anchor head mounting side is closed with a lid so that the opening can be opened, and an air vent hole is provided on the opposite side of the mounting opening, and between the anchor cap and the anchor head. An anchor cap containing a rust preventive material, which contains approximately the same amount of rust preventive material as the space formed in the rust. The lid is made of film-like lid, anchor head torn the film-like lid by attachment to the anchor head according to claim 1 configured to be inserted into the anticorrosive material Anchor cap. The lid is made of film-like lid, anchor cap according to claim 1 as constructed upon attachment to the anchor head mounted torn the film-like lid. 2. The anchor cap according to claim 1 , wherein the lid body is formed by a lid body that is detachably attached, and the lid body is peeled off and attached when being attached to the anchor head. 3. 2. The anchor cap according to claim 1 , wherein the lid is made of a lid that is detachably screw-coupled, and is configured to be detached and attached when being attached to the anchor head. 3.

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