JP2686709B2 - Heating device for welding waterproof sheets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when covering various waterproof target surfaces such as a rooftop of a building made of reinforced concrete with a waterproof sheet, an edge portion (joint portion) of the waterproof sheet is a waterproof target surface or adjacent to the waterproof target surface. The present invention relates to a heating device used for welding on an edge portion (joint portion) of a matching waterproof sheet.

[0002]

2. Description of the Related Art For example, the surface to be waterproofed, which is the roof of a reinforced concrete building, must be covered with a waterproof sheet in order to obtain waterproofness. Roughly speaking, there are two types of waterproofing sheets: one in which the surface of synthetic asphalt is covered with sand, and one in which the surface is made of vinyl chloride.

As shown in FIG. 8, in the former waterproof sheet B, the back surface of the synthetic asphalt is melted by heating, and the edges b are welded so as to overlap each other. Then, the waterproof sheet B is welded to the waterproof target surface A via the primer applied to the waterproof target surface A, and is directly welded to the adjacent waterproof sheet B. In this case, there are a method of welding the entire back surface of the waterproof sheet B and a method of partially welding the back surface.

In the former method, synthetic asphalt is exposed on the entire back surface of the waterproof sheet B. Then, the back surface of the synthetic asphast of the waterproof sheet B in the wound state with the front side inward is melted out by the flame sprayed from the gas burner over the entire length in the width direction, and pressed out from the front side, and the surface to be waterproofed is pressed. A only when facing the surface A to be waterproofed, and when facing the surface A to be waterproofed and the edge b of the adjacent waterproof sheet B, the surface A to be waterproofed is adjacent to the surface A to be waterproofed. It is simultaneously welded to both the edges b of the waterproof sheet B.

In the latter method, the synthetic asphalt is exposed over the entire length of the edge b on the back surface of the waterproof sheet B, and the synthetic asphalt is formed at a desired interval and in a desired size at a number of locations inside the synthetic asphalt. Is exposed. Then, first, while exposing the exposed portion of the synthetic asphalt scattered in the width direction of the back surface of the waterproof sheet B in the wound state with the front surface side facing inward, while being fed out while being melted by the flame injected from the gas burner, the front surface side is pressed,
Welds only to the surface A to be waterproofed. Next, while the synthetic asphalt exposed on the back surface of each edge b is melted by the flame injected from the gas burner, it is pressed from the front side and welded on the waterproof surface A, or when there is an adjacent waterproof sheet B, The synthetic asphalt on the surface of the edge b of the waterproof sheet B is melted at the same time as the above melting, and is welded onto the edge b.

On the other hand, the latter waterproof sheet is pressed from the front side while being melted by hot air, and is pressed onto the waterproof surface A as in the case of the former waterproof sheet B or the waterproof sheet adjacent to the waterproof surface A as in the case of the waterproof sheet B. Welds on both sides with edges.

Conventionally, in the latter method, in order to weld the edge b of the former waterproof sheet B onto the waterproof target surface A or the edge b of the adjacent waterproof sheet B, the injection side of the crater portion of the gas burner is used. Bend the leaning position, insert the flame-spraying crater into the back of the edge b of the waterproof sheet B, and move the gas burner gradually while hooking the crater on the edge of the waterproof sheet B and scooping it up. Then, while sequentially scooping up the edge b of the waterproof sheet B, the synthetic asphalt exposed on the back surface is heated and melted by the flame (when there are adjacent waterproof sheets B, the synthetic asphalt on the edge surface side is removed. It will melt at the same time.). Then, the melted portion is pressed by the pressure roller from the front surface side.

On the other hand, in order to weld the edge portion of the latter waterproof sheet to the waterproof target surface A or the edge portion of the adjacent waterproof sheet, while scooping the edge portion of the waterproof sheet sequentially by the scooping member, the rear surface thereof is scooped up. It is heated by hot air to be melted (if there is an adjacent waterproof sheet, the edge surface thereof is melted at the same time), and the melted portion is pressed from the surface side by a compaction roller.

[0009]

In the case of a waterproof sheet in which the surface of synthetic asphalt is covered with sand, the synthetic asphalt exposed on the back surface of the edge b of the waterproof sheet B is sequentially melted as described above (adjacent waterproof sheets are In some cases, while simultaneously melting the synthetic asphalt on the edge surface side), it is pressed immediately from the surface side, so if the work of melting the synthetic asphalt is interrupted midway, when the work of melting the synthetic asphalt is continued, it will already be welded. It is not possible to insert the crater part of the gas burner in the part adjacent to the part that has completed. For this reason, the crater part of the gas burner is inserted at a part slightly separated from the welded part and the crater part is directed diagonally to melt the adjacent part of the welded part, but the synthetic asphalt of that part is surely melted. Since it is not possible to confirm from the outside whether or not there is any problem, there is a risk that the welding will be poor and the original purpose of waterproofness may not be obtained. Therefore, it is required to continuously perform the work of melting the synthetic asphalt without interruption.

However, the work of moving the gas burner in a state where the edge of the waterproof sheet B is hooked at the crater portion as in the above-mentioned conventional example requires not only skill, but also the resilience restoring force of the waterproof sheet B and twisting of the hose. A large load is applied to the arm that supports the gas supply pipe that follows the crater due to the restoring force of
Because of fatigue, the crater portion is likely to be removed in the middle when the waterproof sheet B is long, and the crater portion is likely to be removed when the direction is changed at the corner portion, resulting in the above waterproof failure. There is a risk. Further, since the crater portion is carefully moved so as not to be separated from the waterproof sheet B, a lot of time is required for the work, and the welding work efficiency is poor. Further, it is difficult to move the gas burner at a constant speed, and the edge b of the waterproof sheet B after welding is corrugated due to the length of the heating time, resulting in poor appearance. Furthermore, since the hose that supplies gas to the gas burner is laid on the waterproof surface A or the waterproof sheet B, there is a problem that it interferes with the work.

Similarly, in the case of a waterproof sheet made of vinyl chloride, it is required that the melting operation is continuously performed without interruption. However, the scooping member easily separates from the edge of the waterproof sheet, May cause waterproof failure. In addition, since the scooping work is performed while sitting down, not only is the welding work efficiency inferior, but it is difficult to heat at a constant rate, and the edges of the waterproof sheet after welding are wavy due to the long and short heating time. Inferior in. Furthermore, there is a problem in that the electric cord crawls on the waterproof target surface or the waterproof sheet, which hinders the work.

The present invention solves the above-mentioned conventional problems and is simple, reliable, and easy in the edge portion of the waterproof sheet over the entire length of the edge portion without requiring skill. Can be melted in a short time, therefore
The edge of the waterproof sheet can be securely welded over the entire length with a substantially uniform width to prevent the occurrence of waterproof failure, and further, the work time can be shortened and the welding work efficiency can be improved. , Moving the heating means at a constant speed to make the heating time uniform over the entire length of the edge of the waterproof sheet and prevent the edge of the waterproof sheet from waving.
Therefore, it is an object of the present invention to provide a heating device for welding a waterproof sheet, which can improve the appearance.

[0013]

Means for Solving the Problems The technical means of the present invention for achieving the above object is for straight running which can roll on the inner position of the edge of the waterproof sheet laid on the waterproof surface. A traveling carriage having a roller, a traveling operation lever for operating traveling of the traveling carriage, and along with traveling of the traveling carriage, an edge portion of the waterproof sheet on a side of the linear traveling roller, A scooping member that sequentially scoops the scooping width restricted by the linear running rollers to separate it from the waterproof target surface, a back surface of the edge of the waterproof sheet scooped by the scooping member, and the scooping member. And a heating means for heating the facing surface.

The traveling operation lever in the above technical means may be arranged in front of the traveling carriage, and the traveling carriage may be provided on both front sides of the linear traveling rollers and provided with auxiliary traveling wheels. In addition, the scooping member may be provided with a guide for guiding the edge of the scooping up waterproof sheet.

As the heating means in the above technical means,
It is possible to use a gas burner for injecting a flame and to provide a flame guide capable of expanding the flame ejected from the crater portion of the gas burner inward from the end portion side of the waterproof sheet.

In the above technical means, the traveling carriage is provided with a support base for supporting the gas cylinder filled with the gas as the fuel of the gas burner, and the traveling operation lever of the traveling carriage is a valve control lever of the gas burner. It is preferable that the control part of the valve control lever is disposed near the operation part of the travel operation lever.

As the operating portion of the traveling operating lever, the main operating portion and the sub operating portion are arranged at right angles, and the linear traveling roller becomes heavy and travels in a stable linear manner. It is made of metal so that it can be formed into a desired length, and further, the support for the gas cylinder is arranged above the linear traveling roller so that the center of gravity is located near the linear traveling roller. Is preferred.

[0018]

According to the present invention configured as described above, the traveling carriage is moved by operating the traveling operation lever, and the edge portion of the corner of the waterproof sheet laid on the waterproof target surface is scooped. Then, the linear traveling roller is placed on the inner position of the scooped portion of the waterproof sheet, and the traveling carriage is slowly traveled by operating the traveling operation lever. Along with this, the linear running roller is regulated so that the waterproof sheet cannot be scooped deeper than the edge, and the edge of the scooped up waterproof sheet moves the linear running roller to the edge side of the waterproof sheet. By controlling not to do so, the traveling bogie can be easily made to travel in a straight line, and while the scooping member scoops the edges of the waterproof sheet in a substantially uniform width, the back surface of the tarpaulin is heated by the heating means and melted in sequence. (If there is an adjacent waterproof sheet laid on the waterproof surface, melt the edge surface at the same time.) Then, by sequentially pressing from the surface side of the melted portion of the edge of the waterproof sheet with the roller compaction, the edge of the waterproof sheet can be sequentially fixed to the waterproof target surface or the edge of the adjacent waterproof sheet. it can.
As described above, the trolley for traveling and its traveling operation lever, the linear traveling roller, the scooping member, and the heating means cooperate with each other so that the edge portion of the waterproof sheet has a substantially uniform width and requires skill over the entire length. Can be easily and reliably melted in a short time, and the heating means can be moved at a constant speed to make the heating time uniform over the entire length of the edge of the waterproof sheet. .

[0019]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 7 show a heating apparatus for welding a waterproof sheet according to an embodiment of the present invention, FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is a right side view, FIG. 4 is a rear view, and FIG. 6 and 7 are an enlarged plan view, an enlarged side view and an enlarged rear view of the crater portion of the gas burner, respectively.

As shown in FIGS. 1 to 4, the traveling carriage 1 has a rear end of one side member 2 made of a metal square tube and a rear end of a rear member 3 made of a metal square tube. Are integrally connected in the right-angled direction, a metal supporting frame 4 is integrally connected to the other end of the rear member 3, and the rear side member 5 made of a metal square tube is attached to the supporting frame 4. The side ends are integrally connected. The side member 5 is inclined so as to be gradually separated from the side member 2 as it reaches the front end side, and the traveling carriage 1 is formed in a frame shape with its front side opened. The support frame 4 has a linear traveling roller 6 and a horizontal shaft 7
Are supported rotatably. The linear traveling roller 6 is made of metal, has a large weight, and is formed to have a desired length such that the linear traveling roller 6 can travel stably in a linear manner. Support plates 8 and 9 are attached to the lower side of the front side of the side members 2 and 5, that is, diagonally forward of both sides of the linear running roller 6, and casters 10, which are auxiliary running wheels, are attached to the respective support plates 8 and 9. 11 are supported. Then, the traveling carriage 1
Can be driven by the linear traveling roller 6 and the casters 10 and 11.

At the front end of the side member 2 of the traveling carriage 1, a base of a traveling operation lever 12 made of a metal pipe is fixed. The traveling operation lever 12 is inclined so that the upper end side is located forward of the base side, and the main operation part 13 projecting forward is bent and formed at the upper end part, and also protrudes toward the other side member 5 side. The sub-operation part 14 made of a metal pipe is connected in a branched manner at a right angle. Then, the operator can pull the traveling carriage 1 forward and operate it by operating the main operating portion 13 and the sub operating portion 14 while facing backward. In this way, since the traveling carriage 1 is pulled forward to travel, the casters 10 and 11 can be made to follow the linear direction.

A metal scooping member 15 is attached to the traveling carriage 1 below the side member 2. The scooping surface 16 of the scooping member 15 is formed low so that the inner edge of the straight running roller 6 side is close to the running surface, and almost the entire front end side is formed low like the inner edge. The separation side of the linear traveling roller 6 is gradually increased toward the side, and the notch 16a is formed in the central portion of the rear end side, and the linear traveling roller 6 side is inclined rearward. A projecting portion 16b is formed, and a projecting portion 16c that projects rearward in a horizontal state is formed on the separating side of the linear traveling roller 6 (see FIGS. 5 to 7). A vertical guide 17 is integrally provided at the front end of the scooping surface 16 on the remote side end of the linear traveling roller 6.

Then, the traveling carriage 1 is mounted on the casters 11 thereof.
By causing the linear running roller 6 to travel forward while riding on the waterproof sheet B (see FIG. 8) laid on the waterproof target surface A such as the roof of a concrete building as described later, The scooping member 15 can be moved with its bottom surface floating from the waterproof sheet B or the like, and the scooping surface 16 of the scooping member 15 can scoop up the edge of the waterproof sheet B to gradually separate it from the waterproof surface A. it can. At this time, the scooping member 15 starts scooping the edge portion b of the waterproof sheet B from a position in front of the linear traveling roller 6 and can scoop up the side of the linear traveling roller 6 highest. In addition to pulling the traveling carriage 1 from the front as described above, in particular, the linear traveling roller 6 rides on the waterproof sheet B as described above, so that the waterproof sheet B is inward from the edge portion b. The traveling carriage 1 is regulated so as not to be deeply scooped up, and is regulated so that the linear traveling roller 6 does not move to the edge of the waterproof sheet B at the scooped portion of the waterproof sheet B. The scooping surface 16 of the scooping member 15 does not separate from the edge b of the waterproof sheet B, and the edge b can be easily scooped with a substantially uniform width by making the scissoring member 15 travel straight in a straight line. Also, the waterproof sheet B
By guiding the end edge of the edge along the guide 17, the edge b can be scooped up more easily with a uniform width. The operator can easily confirm this scooping operation because the traveling carriage 1 has a frame shape. Also,
When the traveling carriage 1 is turned around at the corner of the waterproof sheet B, the projection 1 of the scooping surface 16 scoops the corner of the waterproof sheet B.
It can be supported on 6c and prevented from hanging down.

The crater portion 1 of the gas burner 18 is located inside the scooping member 15, that is, behind the scooping surface 16.
9 is supported in a horizontal direction and directed rearward, and the direction of the crater portion 19 is finely adjusted by operating the adjusting screw 20. The injection port portion at the rear end of the crater portion 19 is the inner end of the cutout 16a of the scooping surface 16, that is, the protruding portion 16
It is set to be located near the bases of b and 16c. An end of a metal supply pipe 21 capable of supplying a gas as a fuel is connected to the crater portion 19, the supply pipe 21 is supported by a traveling operation lever 12 by a support portion 22, and the other end of the supply pipe 21 is connected. One end of a gas supply hose 23 inserted into the sub operation portion 14 is connected to the.
At the other end of the hose 23, a connection port 24 is provided outside the sub operation unit 14.
Is attached. A valve 25 is provided at an intermediate portion of the supply pipe 21, and the valve 25 is opened and closed and the amount of gas supplied is controlled by operating an adjusting knob 26. A support base 27 is attached above the support frame 4 of the traveling trolley 1, a gas cylinder 28 is exchangeably supported by the support base 27, and a connection port 24 is connected to a connection port 30 of a hose 29 connected to a valve of the gas cylinder 28. Is detachably connected.

A valve control lever 31 is slidably supported by a support member 32 on the traveling operation lever 12, and the valve control lever 31 is connected to the valve 2 via a connecting member 33.
5, the control unit 34 of the valve control lever 31 is arranged near the main operation unit 13 of the travel operation lever 12. Therefore, it is possible to adjust and control the open state of the valve 25 by operating the control section 34 with the fingers of the hand while holding the main operation section 13 with the hand. Then, by opening the valve 25, the pilot fire that has been burned by ignition in advance causes the gas cylinder 28 to hose 29, 23,
The gas supplied to the crater portion 19 via the supply pipe 21 or the like can be ignited and burned to inject the flame 37 (see FIG. 5) from the crater portion 19. At this time, the operator can confirm the injection state of the flame 37 by the notch 16a of the scooping surface 16, and the air can be satisfactorily supplied to the crater portion 19.

In particular, as is clear from FIGS. 5 to 7, the injection port portion on the rear end side of the fire port portion 19 is widened so as to be horizontally long, and the pair of flame guides 3 are located at the injection port portion.
5, 36 are attached to the scooping member 15. The flame guide 35 located on the outer side is formed in a substantially linear shape along the traveling direction of the traveling carriage 1, and the flame guide 36 located on the inner side is a linear traveling roller at the central portion of the injection port from the base side to the tip side. The flame 37, which is inclined so as to approach the 6 side and is ejected from the ejection port of the crater portion 19 by these flame guides 35 and 36, scoops up the scooping surface 16 as described above.
Is directed to the space of the back surface of the edge b of the waterproof sheet B located on the rear side of the protruding portion 16b, and the back surface of the edge b of the waterproof sheet B scooped up and its opposing surface, that is, When there are adjacent waterproof sheets B, the surface of the edge portion b of the waterproof sheet B is guided so as to be heated.

In the above structure, the waterproof sheet B will be described below.
The welding operation of the edge portion b will be described. as mentioned above,
First, adjust the valve 25 of the gas burner 18 to the adjusting knob 26.
Operation to open the gas cylinder 28 to the hose 29,
Gas is supplied to the crater part 19 through 23, the supply pipe 21, etc., and a pilot fire is ignited by ignition. Subsequently, the control unit 34 of the valve control lever 31 is operated to open the valve 25 of the gas burner 18, and as described above, the gas cylinder 28 is passed through the hoses 29 and 23, the supply pipe 21, etc.
The gas supplied to 9 is ignited by a pilot fire to burn, and a flame 37 is jetted from the jet port of the crater portion 19.

In this state, the traveling carriage 1 is moved by operating the main operating portion 13 and the sub operating portion 14 of the traveling operating lever 12, and as shown in FIG. 8, a waterproof target surface such as a rooftop of a concrete building. The scooping surface 16 of the scooping member 15 is shown in FIG. 1 and FIG. 4 for the edge b at the corner of the waterproof sheet B to be welded, which is laid in a fixed state with the edge b left on A. Scoop up and guide the edge of the waterproof sheet B
Contact. In this state, the caster 11 rides on the waterproof sheet B to be welded, the linear running roller 6 rides on the inner position of the scooped-up portion of the waterproof sheet B to be welded, and the remaining casters 10 are adjacent to the welded sheet. It is on a waterproof sheet B to be applied or on a surface A to be waterproofed.

In the above state, the traveling carriage 1 is slowly pulled from the front by operating the traveling operation lever 12, and the traveling carriage 1 is linearly slowly traveled along the edge b of the waterproof sheet B as described above. Let Along with this, the scooping surface 16 of the scooping member 15 scoops up the edge b of the waterproof sheet B sequentially with a substantially uniform width, and a flame is formed behind the protruding portion 16b of the scooping surface 16 in the space on the back side thereof. 37 to spray synthetic asphalt exposed on the back
To sequentially dissolve (when adjacent waterproof sheets B exist, the synthetic asphalt is simultaneously melted from the surface side of the edge b). At this time, the scooping member 1
Since the bottom surface of Float 5 floats above the adjacent waterproof sheet B, it can be moved smoothly with less resistance.
Then, the synthetic asphalt on the back surface of the edge portion b of the waterproof sheet B is melted and sequentially pressed by the pressure roller from the front surface side of the portion that is lowered from the protruding portion 16b, so that the edge portions b of the waterproof sheet B are adjacent to each other. It is sequentially fixed on the edge portion b of B or is sequentially fixed on the waterproof surface A. At this time, with the operator standing up, the traveling operation lever 1
By operating the traveling carriage 1 by the operation of 2,
You can run continuously at a constant speed, and moreover,
As described above, since the scooping member 15 can scoop up the edge b of the waterproof sheet B sequentially with a substantially uniform width, the melting condition of the synthetic asfast over the entire length of the edge b becomes uniform. Therefore, after heating, the amount of protrusion of the molten synthetic asphalt from the edge of the waterproof sheet B becomes the entire length when it is lowered onto the waterproof target surface A or the edge b of the adjacent waterproof sheet B and pressed by the rolling roller. It becomes uniform throughout.

The rear end of the scooping member 15 is a waterproof sheet B.
When the casters 10 and 11 on the front side of the traveling carriage 1 are floated upward by the operation of the traveling operation lever 12, the scooping surface 1 of the scooping member 15 is reached to the end of the edge b.
While keeping the edge b of the waterproof sheet B scooped up by 6, the direction of the traveling carriage 1 is changed to a right angle direction around the linear traveling roller 6. At this time, as described above, the protrusion 16c of the scooping-up surface 16 can prevent the corners of the waterproof sheet B from hanging down to prevent the burnout due to the flame 37. Hereinafter, each edge b is operated by the same operation as above.
Can be sequentially welded on the edge b of the adjacent waterproof sheets B or on the surface A to be waterproofed.

In the above embodiment, the gas cylinder 28 is mounted on the traveling trolley 1, so that a hose for supplying gas to the gas burner 18 must be laid on the waterproof target surface A or the waterproof sheet B. The workability can be improved because there is no problem, but if necessary, the valve 24 of the gas cylinder installed on the surface A to be waterproofed and the connection port 24 of the hose 23.
It is also possible to use and by connecting and with another hose.
Further, without using the flame guides 35 and 36 as in the above embodiment, the synthetic asphalt on the back surface of the edge portion b of the waterproof sheet B scooped up by the flame 37 ejected from the crater portion 19 and the edge of the adjacent waterproof sheet B. The shape of the crater portion 19 can be designed in advance so that the synthetic asphalt on the surface side of the portion b can be melted. Further, the casters 10 and 11 which are the wheels for auxiliary traveling may be omitted, and in this case, legs for supporting the traveling carriage 1 in the horizontal direction when heating work is stopped can be provided as needed. Further, the heated back surface of the edge portion b of the waterproof sheet B is the waterproof target surface A,
Alternatively, the molten synthetic asphalt is dropped onto the heated surface of the edge b of the adjacent tarpaulin B, and the molten synthetic asphalt is put on the tarpaulin B.
A device may be provided for sprinkling sand on the edge of the sand when it protrudes. Further, in the above embodiment, the case where the synthetic asphalt is used for welding the waterproof sheet B whose surface is covered with sand has been described. However, the gas burner 18 is replaced by a heating means such as an electric heater and a fan using hot air. It can also be used for welding a waterproof sheet made of vinyl chloride. In addition, the present invention can be variously changed in design without departing from the basic technical idea.

[0032]

As described above, according to the present invention, the traveling carriage is moved by operating the traveling operation lever, and the edge portion of the corner of the waterproof sheet laid on the waterproof target surface is scooped. Then, the linear traveling roller is placed on the inner position of the scooped portion of the waterproof sheet, and the traveling carriage is slowly traveled by operating the traveling operation lever. Along with this, the linear running roller is regulated so that the waterproof sheet cannot be scooped deeper than the edge, and the edge of the scooped up waterproof sheet moves the linear running roller to the edge side of the waterproof sheet. By controlling not to do so, the traveling bogie can be easily made to travel in a straight line, and while the scooping member scoops the edges of the waterproof sheet in a substantially uniform width, the back surface of the tarpaulin is heated by the heating means and melted in sequence. (If there is an adjacent waterproof sheet laid on the waterproof surface, melt the edge surface at the same time.) Then, by sequentially pressing from the surface side of the melted portion of the edge of the waterproof sheet with the roller compaction, the edge of the waterproof sheet can be sequentially fixed to the waterproof target surface or the edge of the adjacent waterproof sheet. it can. As described above, the trolley for traveling and its operating lever for operation, the linear traveling roller, the scooping member, and the heating means cooperate with each other so that the edge portion of the waterproof sheet has a substantially uniform width and requires skill over the entire length. Easily and reliably without
Moreover, the waterproof sheet can be melted in a short time, and therefore the edge of the waterproof sheet can be reliably welded over the entire length with a substantially uniform width to prevent the occurrence of waterproof failure, and the working time can be shortened. The welding work efficiency can be improved. Further, by moving the heating means at a constant speed, the heating time can be made uniform over the entire length of the edge of the waterproof sheet, and the edge of the waterproof sheet after welding can be prevented from waving, thus improving the appearance. Can be made.

Further, by disposing the traveling operation lever in front of the traveling carriage, the traveling carriage can be pulled by the traveling operation lever from the front so that the traveling carriage can be easily linearly moved. It can be run, and can be prevented from interfering with the rolling operation of the welded portion. Also, since the traveling carriage is located on the front side of both sides of the linear traveling roller and has auxiliary traveling wheels, the traveling carriage can travel in a stable state, and moreover, the direction changing work can be performed smoothly. You can

Further, by providing a guide for guiding the edge of the waterproof sheet to be scooped by the scooping member, the edge of the waterproof sheet can be easily and reliably scooped with a substantially constant width. .

A gas burner is used as the heating means,
By providing a flame guide capable of expanding the flame injected from the crater portion of the gas burner from the end side of the waterproof sheet to the inside, it is economical because the burner on the market only needs to be processed.

Further, by providing the traveling carriage with a support stand for supporting the gas cylinder filled with gas as the fuel of the gas burner, a hose for supplying the gas to the gas burner can be laid on the waterproof target surface or the waterproof sheet. The heating work can be performed even more efficiently without the need for heating. In addition, the operability is improved by supporting the valve control lever of the gas burner on the travel operation lever of the travel trolley and disposing the control part of this valve control lever near the operation part of the travel operation lever. The heating operation can be performed even more efficiently.

[Brief description of the drawings]

FIG. 1 is a front view showing a heating apparatus for welding a waterproof sheet according to an embodiment of the present invention.

FIG. 2 is a plan view showing the heating device for welding the waterproof sheet.

FIG. 3 is a right side view showing the heating device for welding the waterproof sheet.

FIG. 4 is a rear view showing the heating device for welding the waterproof sheet.

FIG. 5 is an enlarged plan view showing a crater portion of a gas burner used in the heating apparatus for welding the waterproof sheet.

FIG. 6 is an enlarged side view showing a crater portion of a gas burner used in the heating apparatus for welding the waterproof sheet.

FIG. 7 is an enlarged rear view showing the crater portion of the gas burner used in the heating apparatus for welding the waterproof sheet.

FIG. 8 is a partial cross-sectional view for explaining a state in which the waterproof target surface is covered with a waterproof sheet.

[Explanation of symbols]

 1 Traveling Bogie 6 Linear Traveling Roller 12 Traveling Operating Lever 13 Main Operating Section 14 Sub Operating Section 15 Scooping Member 17 Guide 18 Gas Burner 19 Crater 21 Gas Supply Pipe 23 Gas Supply Hose 25 Valve 27 Support 28 Gas Cylinder 31 Valve Control Lever 34 Control Section 35 Flame Guide 36 Flame Guide

Claims (5)

(57) [Claims] 1. A traveling carriage having a linear traveling roller capable of rolling on an inner position of an edge of a waterproof sheet laid on a waterproof surface, and a traveling operation for operating traveling of the traveling carriage. Along with the traveling lever and the traveling bogie, the edges of the waterproof sheet are scooped up side by side with the linear traveling roller while the scooping width is regulated by the linear traveling roller. A waterproof sheet welding heating device comprising: a scooping member which is separated from the surface to be waterproofed; and a heating means which heats a back surface of an edge portion of the waterproof sheet scooped by the scooping member and a facing surface thereof. 2. The waterproof sheet welding according to claim 1, wherein the traveling operation lever is arranged in front of the traveling carriage, and the traveling carriage is located on the front side of both sides of the linear traveling roller and has auxiliary traveling wheels. Heating device. 3. The heating apparatus for welding a waterproof sheet according to claim 1, wherein the scooping member has a guide for guiding an edge of the scooping waterproof sheet. 4. The heating means is a gas burner for injecting a flame, and a flame guide is provided which can spread the flame ejected from the crater portion of the gas burner inward from the end side of the waterproof sheet. The heating device for welding the waterproof sheet according to any one of 3 above. 5. The traveling carriage has a support base for supporting a gas cylinder filled with gas as fuel for the gas burner, and a valve control lever of the gas burner is supported by a traveling operation lever of the traveling carriage. The waterproof sheet welding heating device according to claim 4, wherein the control portion of the valve control lever is arranged near the operation portion of the travel operation lever.