JP3167480U - Heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating device for joining a concrete pipe body which can surely join the divided sealing materials without being influenced by the site environment such as air temperature and weather. SOLUTION: A seal formed by heating a plurality of divided sealing materials 40 embedded in the outer periphery of a joint portion at an opening end of any one of a concrete pipe body 10 composed of a plurality of divided bodies and joining them in an annular shape. The heating device 50 for joining materials is configured as follows. That is, a heating unit that covers the divided sealing material and heats the butted divided sealing material, and a control unit that is integrally formed with the heating unit and can control the surface temperature of the heating unit are provided, and the heating unit is provided. The lip portion of the seal member 40 that is exposed without being embedded in the concrete pipe body and the shape corresponding to the outer shape of a part of the base portion are formed. [Selection diagram] Fig. 4

Description

  The present invention relates to a joining heating device that joins a seal material of a concrete pipe body (hereinafter, concrete pipe body) such as a box culvert, a fume pipe, a propulsion pipe, and the like.

The concrete pipe shown in Patent Document 1 has a joint portion that can be connected to a predetermined opening at least at one of the opening ends on both sides in the axial direction. By connecting with the opening, it is possible to extend in the axial direction.
Moreover, the said joint part is ensuring the sealing performance of concrete pipes by attaching the cyclic | annular sealing material which seals the clearance gap between the said opening part and the said joint part at the time of the connection of a concrete pipe.

Moreover, the concrete pipe body shown in patent document 1 is divided into a plurality of divisions so that the concrete pipe body is divided so as to have a joint surface along the axial direction from the viewpoint of transportability and handleability of the concrete pipe body. Consists of the body.
Of course, the annular sealing material is also divided in the circumferential direction of the concrete pipe body, and when joining the divided bodies, the joining end portion or the length direction of the divided sealing material protruding from the joining surface of one divided body A concrete pipe body is formed by fitting the end portion into the mounting groove of another adjacent divided body from the circumferential end portion.

JP 2006-118266 A

However, in assembling the concrete pipe described in Patent Document 1, there are the following problems.
(1) Since the adhesive was solidified by natural drying after applying the adhesive to the joint surface of the split sealing material and joining the split bodies, the drying time required by changes in the environment such as weather conditions at the site Changed, and a stable adhesive effect could not be obtained.
(2) A heating device that can uniformly heat the joint surface (applied portion of the adhesive) of the split seal material has been required in order to quickly bond the joint surfaces after joining the divided bodies. There has not yet been a heating device with the desired function.

  In order to solve the above-mentioned conventional problems, the present invention is not affected by the environment of the work site, and can heat the joint surface of the split seal material (applied part of the adhesive) evenly. An object is to provide an apparatus.

  Therefore, the present invention made to achieve the above object has a joint portion connectable to a predetermined opening at at least one of the opening ends on both sides in the axial direction. And an annular sealing material that seals the gap between the joint portion and the joint portion, and the casing of the concrete tube body is divided into a plurality of parts so as to have a joint surface along the axial direction. A heating apparatus for joining a sealing material used for joining a concrete pipe body, wherein the sealing member after joining the divided bodies is joined to an annular sealing material comprising a plurality of divided sealing materials. A heating unit formed in a shape corresponding to the outer shape of the exposed portion of the divided sealing material so as to cover; and a control unit formed integrally with the heating unit and capable of controlling the surface temperature of the heating unit. Features , There is provided a bonding heating apparatus concrete tube.

According to the present invention, since the heating part is formed so as to fit the outer shape of the exposed part of the divided sealing material, the joint surface (applied part of the adhesive) of the divided sealing material can be heated evenly. The divided sealing materials can be reliably joined without being affected by the on-site environment such as the weather. Furthermore, in the present invention, the temperature distribution inside the divided sealing material is less likely to be uneven, and the adhesive environment of the adhesive can be made more uniform.
Therefore,

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Details of concrete pipes and divided bodies]
The concrete pipe body on which the present invention is based will be described with reference to FIG.

(1) Concrete pipe body As shown in FIG. 1, the concrete pipe body 10 is provided with a male end portion 20 which is a joint portion at the opening end portion on one side in the pipe axis direction of the concrete pipe body 10. A female end 30 as an opening is provided at the opening end on the other side in the direction. The male end portion 20 can be connected to the female end portion 30 of another concrete pipe body, more specifically, can be inserted and fitted, and a plurality of these concrete pipe bodies 10 are connected in the axial direction. Thus, the concrete pipe body 10 can be extended.
Moreover, although the cross-sectional shape of the pipe body direction of the concrete pipe body 10 is a rectangular shape here, it is not limited to this shape.

(2) Divided body The casing of the concrete tubular body 10 is composed of a plurality of divided bodies 10A and 10B that have a substantially U-shaped cross-section divided into a plurality of sections along the pipe axis direction.
The number of divisions of the concrete pipe body 10 is preferably an even number, and the form divided into two in the vertical direction is particularly optimal in practical use.

(3) Annular seal material When the outer end of the male end portion 20 is connected to another concrete pipe body 10, that is, when inserted into the female end portion 30 of the other concrete pipe body 10, the male end An annular sealing material 40 that seals the gap between the portion 20 and the female end 30 is attached. As a material of the annular sealing material 40, for example, a rubber elastic material can be used.
Further, the annular sealing material 40 is constituted by a plurality of divided sealing materials 40A and 40B which are divided in the circumferential direction of the concrete tubular body 10 and can be joined.
Referring to FIG. 1, the annular seal member 40 extends from the end of the split seal member 40B that is retracted by a predetermined length at the circumferential end of the male end 20 of one split member 10B, and the other split member. A continuous annular sealing material 40 can be configured by joining the end of the extended portion 41 of the split sealing material 40A that has been taken out.

  The extending portion 41 is not limited to being provided on the divided sealing material 40A side attached on the divided body 10A side as shown in FIG. Therefore, it may be provided in the divided sealing material 40B, or in the case of the divided bodies 10A and 10B divided into two, two extending portions 41 are provided in each of the divided sealing materials 40A and 40B. May be.

  Moreover, the annular sealing material 40 used in the present invention does not particularly limit the cross-sectional shape. Further, the annular sealing material 40 may be in a form (pre-attachment) embedded in advance when the concrete pipe body 10 is molded, or may be a form (post-attachment) attached by an adhesive or the like after molding.

(4) Introducing member In the vicinity of the mounting groove 42, that is, in the vicinity of the portion where the split sealing material has been retracted by a predetermined length at the end in the circumferential direction of the joint portion of the one split body, a metal introducing member 43 is provided. May be installed.
The introduction member 43 is a metal having a coefficient of friction that allows the extension portion 41 of the other split seal material to be easily fitted, and at the same time, the extension portion 41 and the introduction member 43 are easily bonded by an adhesive. Possible metals are desirable, such as stainless steel.

(5) Other forms As other forms, the introduction member 43 or the concrete tubular body 10 is provided with an injection hole, and a gap formed between the inner surface of the divided seal material 40 and the introduction member 43, or a divided seal. You may comprise so that the clearance gap which arises in the joint surface of materials may be connected with the exterior. If comprised in this way, it will become possible to inject | pour an adhesive agent from the exterior via an injection hole after the assembly of both the division bodies 40A and 40B, and it becomes possible to improve a sealing performance further.

[Heating device]
With reference to FIG. 2, a heating apparatus for joining a sealing material according to the present invention will be described.
FIG. 2 is a schematic perspective view showing an embodiment of the heating device of the present invention.

The joining heating device 50 of the present invention includes a heating unit 51 formed substantially along the outer shape of the exposed portion of the divided seal material so as to cover a part of the annular seal member 40 after joining the divided bodies, It is comprised from the control part 52 which can control the surface temperature in the said heating part.
More specifically, the outer shape of the heating portion 51 is formed so as to substantially conform to the outer shape of the exposed portion after the annular sealing material 40 is joined, that is, the lip portion of the annular sealing member 40 and a portion of the base portion. .
Moreover, the heating part 51 can heat so that it may surround from the circumference | surroundings with respect to the said joint surface by providing the full length which can cover the joint surface vicinity of the said division | segmentation sealing members 40A and 40B. It is desirable to be configured.
The control unit 52 is electrically connected to the heating unit 51 and is configured to be controllable so that the surface temperature of the heating unit 51 can be kept variable or constant.

[Assembly of concrete pipe]
A method of assembling a concrete pipe by joining divided bodies will be described with reference to FIGS.
FIG. 3 is an enlarged schematic diagram illustrating a joining process between the divided sealing materials in FIG. 1.
FIG. 4 is a schematic view showing an example of use of the heating device after fitting the divided seal material.

(1) Joining of sealing materials To assemble the concrete pipe body 10 from the plurality of divided bodies 10A and 10B, first, the protruding portion 41 of the protruding divided sealing material 40A is attached to the mounting groove of the adjacent divided body 10B. The concrete pipe body 10 is joined by fitting into the end 42 in the circumferential direction and matching the joining ends of the divided sealing materials 40A and 40B. At this time, since the joining end portions of the divided sealing materials 40A and 40B are abutted with each other, an adhesive is applied in advance to the joining surfaces of the divided sealing materials 40A and 40B.
Thereby, the split sealing materials 40A and 40B are joined together to form the annular sealing material 40.

(2) Heating of bonding surface After bonding the divided bodies, the bonding heating device 50 described above is arranged and fixed in the vicinity of the bonding surface by a vise or the like, and is heated only for a predetermined temperature and for a predetermined period. .
The arrangement form of the joining heating device 50 with respect to the annular seal member 40 will be described in more detail. As shown in FIG. 4, the heating part 51 is arranged so that the outer shape of the heating part 51 fits the shape of the exposed portion of the annular seal member 40. To do.
The heating temperature and the heating period are appropriately set within the recommended range for the adhesive to be used.
By heating the joint surface in this way, the joint surface can be firmly fixed earlier.

The schematic perspective view of a concrete pipe. The schematic perspective view which shows one Example of the heating apparatus for joining which concerns on this invention. The enlarged schematic diagram which shows the joining process of the division | segmentation sealing materials in FIG. Schematic which shows the usage example of the heating apparatus after division | segmentation sealing material fitting.

DESCRIPTION OF SYMBOLS 10 Concrete pipe body 10A, 10B Split body 20 Male end part 30 Female end part 40 Annular seal material 40A, 40B Split seal material 41 Extension part 42 Installation groove 43 Introduction member 50 Joining heating device 51 Heating part 52 Control part

Claims (1)

An annular sealing material having a joint portion connectable to a predetermined opening portion at at least one opening end portion of both sides in the axial direction, and sealing a gap between the opening portion and the joint portion when connected. A concrete pipe attached to a joint portion, wherein the casing of the concrete pipe is composed of a plurality of divided bodies divided so as to have a joint surface along the axial direction, and an annular seal comprising a plurality of divided sealing materials A heating device for joining a sealing material used for joining concrete pipes,
A heating unit formed in a shape corresponding to the outer shape of the exposed portion of the divided seal material so as to cover the seal member after joining the divided bodies;
It is formed integrally with the heating unit, and has a control unit capable of controlling the surface temperature of the heating unit,
Heating device for joining concrete pipes.

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