JPH0336568Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a cutter for repairing a cement asphalt mortar layer. [Prior Art] In recent years, with the development of transportation systems, many rail transportation systems have adopted so-called elevated tracks from the viewpoint of increasing speed and reducing noise. Among the Shinkansen tracks, which are one of such elevated tracks, there are tracks as shown in FIGS. 14 and 15. In this, a precast track slab 102 is installed on a concrete road base 101 of a viaduct 100 constructed of steel-framed reinforced concrete or the like. Then, cement asphalt mortar (hereinafter referred to as CA mortar) is filled between the track slab 102 and the roadbed concrete 101 to form a cement asphalt mortar layer (hereinafter referred to as CA mortar layer) 103. Then, a track rail 104 is fixed to the track slab 102. Regarding such Shinkansen construction, the Japanese National Railways has specified in detail the construction standards that must be complied with in the Shinkansen Track Construction Standard Instructions (New Lines). Regarding the formation of the CA mortar layer 103, the material of the CA mortar used for the formation of the CA mortar layer 103, its blending ratio, etc. are as follows in 4-1 of the Shinkansen Track Construction Standard Specifications (New Lines). It is defined in detail. The above Shinkansen track construction standard specifications (newly constructed lines) 4-
2. The standard composition of CA mortar stipulated in "Mortar Mixing and Mixing" is as follows.

[The problem that the idea attempts to solve]

The inventor of the present invention has conducted extensive studies on the conventional chisel and hammer chisel, and has found that there are a number of problems as described below. In other words, the vertical width of the side end surface of the CA mortar layer 103 to be removed is very narrow, approximately 30 to 70 mm, and the work is difficult. Therefore, it is difficult to remove the material at an accurate and constant depth, and the removed depth may be too shallow or too deep. In this way, it is difficult to remove at a certain depth accurately, so the general tendency is to remove too deeply to avoid failing inspections after removing shallowly. . Therefore, the amount of resin that must be filled into the empty space after removal in a subsequent process increases, and the material cost increases. Track repair work can only be carried out for a total of just under five hours a day, from after 11 p.m. to just before 4 a.m. the next morning, when no trains are in operation. And part 5
The work for that night must be completed within an extremely short period of time, so as not to disrupt the next day's railway operations. On the other hand, after the CA mortar layer 103 is chiseled,
Cleaning the chiseled parts, installing the formwork, mixing the resin,
A series of post-processes such as resin injection, curing, and formwork removal are continuous. Each of these post-processes requires a different amount of time. Therefore, the chiseling for the day must be completed within about two hours after the start of work. Therefore, a large number of workers must be assigned to chisel, which increases personnel costs. I found out that there are other problems. Therefore, as a result of intensive research to solve these problems, the inventor of this invention has developed a completely new cement-asphalt system that has never existed before, as shown in Figures 1 to 8. We devised cutter A for repairing mortar layers. This cement asphalt mortar layer repair cutter A has a car body 1 for operation on a track slab,
A drive mechanism 2 and a water tank 3 installed on the vehicle body 1, a cutter blade 4 that is rotated horizontally by the drive mechanism 2 and cuts the side of the CA mortar layer 103, and a cutter blade that removes water in the water tank 3. 4 and a water supply mechanism 5. Furthermore, as a result of extensive research, the inventor of the present invention has developed a cutting tool using a segment type diamond foil cutter blade 105 as shown in FIG.
It has been found that cutting the CA mortar layer 103 causes the following problems. That is, as shown in FIG. 17, the temperature of the CA mortar layer 103 near the cutter blade 105 during cutting is:
It increases in approximately direct proportion to the rotational speed of the cutter blade 105. CA mortar melts at approximately 55°C.
The molten CA mortar becomes clogged between the teeth 106 of the cutter blade 105. Therefore, the cutting ability of the cutter blade 105 is reduced. In order to prevent this clogging, the cutter blade 105 may be cooled by pouring a large amount of water to prevent CA mortar from adhering to the cutter blade 105. However, pouring a large amount of water onto the cutter blade 105 is not preferable due to the relationship with the resin that will be injected in a subsequent process. We found that there are problems such as: The reason why the CA mortar gets stuck between the teeth 106 of the cutter blade 105 is thought to be as follows. That is, the thickness of the cutter blade 105 is relatively thin. With this thin cutter blade 105,
The width of the cut groove formed in the CA mortar layer 103 is extremely narrow. Therefore, the CA mortar layer 10 generated during the cutting process of the CA mortar layer 103
The cutting powder of No. 3 could hardly be scattered outside the notched groove. Therefore, most of the energy generated in the cutting process of the CA mortar layer 103 is transferred to the CA mortar layer 103.
3 and increases the temperature of the CA mortar layer 103. Therefore, asphalt, etc. in the CA mortar layer 103 becomes viscous, and the teeth 10 of the cutter blade 105
6 and the tooth 106. Furthermore, it is not preferable to pour a large amount of water onto the cutter blade 105 because urethane-based resin is generally used as the resin filled after excavating the CA mortar layer 103 due to its price and curing time. However, this urethane resin has poor adhesion to concrete due to water. [Means for solving the problem] In order to solve the above-mentioned problems, the present invention operates a cutter for repairing a cement asphalt mortar layer on a track slab installed on a concrete roadbed through a cement asphalt mortar layer. a car body for use in the car, a drive mechanism and a water tank mounted on the car body, and a cutter blade that is attached to one side of the car body so that its position can be adjusted up and down, back and forth, left and right, and that can be rotated horizontally by the drive mechanism. ,
a water supply mechanism connected to the water tank and uniformly applying a small amount of water in the water tank to the cutting edge of the cutter blade; urging the wheels of the vehicle body to urge the vehicle body toward a side opposite to the one side portion; In addition to providing means,
Providing a holding means on the car body to maintain a distance between the car body and the side surface of the track slab to a certain width or more,
Further, a wide notch is provided at least near the tip between adjacent teeth of the cutter blade. [Function] This cutter for repairing cement asphalt mortar layers cuts the sides of CA mortar layers accurately at a constant depth and at high speed. In addition, since the teeth of the cutter blade are spaced apart and water is uniformly applied little by little to the cutting edge of the cutter blade, CA mortar will not clog between the teeth of the cutter blade. [Example] An example of the present invention will be explained with reference to the drawings.
Figures 3 to 3 are a plan view, a right side view, and a rear view, respectively, of a cutter A for repairing a cement asphalt mortar layer according to the present invention. In the figure, 1 is the vehicle body. A drive mechanism 2 and a water tank 3 are mounted on the vehicle body 1. A cutter blade 4 is connected to the drive mechanism 2, and a water tank 3
A water supply mechanism 5 is connected to. As shown in FIG. 4, the vehicle body 1 is provided with three small wheels 10 in series on the left side and two slightly large wheels 11 in series on the right side with respect to the traveling direction P. And the two wheels 11, 11 are
Each of them is attached with its front part tilted slightly to the left with respect to the traveling direction P. The wheel 11 is connected to a handle 16 via a sprocket wheel (not shown), a chain 12, a clutch 13, a worm and worm gear 14, a deflection shaft 15, etc. Further, as shown in FIGS. 5 and 6, a cutter blade holding plate 18 is attached to the left side of the vehicle body 1, which can be folded up and folded down using a hinge 17. Pulley mounting pieces 19 are provided at both ends of the tip of this cutter blade holding plate 18, and each pulley mounting piece 1
A pulley 20 is attached to 9. 20 pulleys each
is attached to the cutter blade holding plate 18 so that it rotates horizontally below the wheels 11 when it is folded vertically. In addition, in the center of the cutter blade holding plate 18, there are two
An elevating plate 22, which can be moved in and out with individual screws 21, 21, is mounted facing outward. A rotation shaft 23 and an arcuate guide plate 24 are attached to this elevating plate 22. Guide plate 24
has an arc-shaped guide groove 25 along its edge, and is provided perpendicularly to the elevating plate 22. Incidentally, reference numeral 26 denotes a fixing metal fitting for bringing the cutter blade holding plate 18 into close contact with the right side plate 27 of the vehicle body 1 when the cutter blade holding plate 18 is folded down. Also, 28,
Reference numeral 29 denotes a fixture for holding the cutter blade holding plate 8 in the folded state. The drive mechanism 2 is an electric motor, and transmits rotational force to the cutter blade 4 via a flexible shaft 6. As shown in FIGS. 5 and 6, the flexible shaft 6 has a cutter blade 4 attached to its tip and a cover plate 40 near the tip. The cover plate 40 has a substantially semicircular shape, and a rotating arm 41 is formed by extending a diameter portion of the semicircular shape to one side, and a screw 42 is attached to the diameter portion on the opposite side of the rotating arm 41. installed. Then, the tip of the rotating arm 41 is connected to the rotating shaft 23.
The screw 42 is rotatably attached to the
is inserted into the guide groove 25 and then tightly screwed onto the cover plate 40 or loosened. This allows the cover plate 40 and the cutter blade 4 to be attached to the guide groove 25 by the screw 42.
In addition, when the cutter blade holding plate 18 is folded down and made vertical, the right upper surface of the cutter blade 4 is always covered by the cover plate 40. The cutter blade 4 has a wide notch 44 between adjacent teeth 43, as shown in FIG. Here, wide means that the length a of the notch 44 is the width of the tooth 4.
This refers to the case where the length is approximately 1/2 or more of the length b of 3. In this embodiment, the diameter c of the tip circle, that is, the outer diameter c, is 356 mm, the length b of the tooth 43 is 28 mm, the thickness of the blade is 5.5 mm, and the length a of the notch 44 is 20 mm. The cutter blade 4 in the present invention has adjacent teeth 4
3 and 43, the shape of the tooth 43 and the notch 44,
The size etc. may be determined arbitrarily. For example, it may be as shown in FIGS. 9 to 11. The one shown in FIG. 9 is a segment type diamond foil cutter blade 105 as shown in FIG. A wide notch 44 is provided only between the two parts. The water tank 3 is connected to a water supply mechanism 5. The water supply mechanism 5 includes a flexible water supply pipe 50,
It is provided with an adjustment mechanism 51 that evenly applies water to the cutting edge of the cutter blade 4 little by little. Here, the trace amount is due to the heat generated when the cutter blade 4 cuts the CA mortar layer 103.
The maximum amount of water that can be completely evaporated. Moreover, uniformity means that approximately the same amount of water is applied to the entire surface of the cutting edge. In this embodiment, a valve 52 and a spouting pipe 53 are used as an adjustment mechanism 51 that evenly applies water to the cutting edge of the cutter blade 4 little by little. As shown in FIG. 1, the valve 52 is provided near the water tank 3 and is used to adjust the amount of water applied to the cutting edge of the cutter blade 4 little by little. As shown in FIG. 8, the spouting pipe 53 is a copper pipe whose tip is crushed and closed, and a small spout 54 is provided above the closed portion. This pouring pipe 53 is attached to the cover plate 40. Its attachment position is outside the chisel screw 42 and slightly inside the base of the teeth 43 of the cutter blade 4. As shown in FIG. 12, the spouting pipe 54 is directed downward in the rotational direction Q of the cutter blade 4. The water poured out from the spout 54 is transferred to the cutter blade 4.
As the cutter blade 4 rotates, the cutter blade 4 is cooled while running on the upper surface of the cutter blade 4 as shown by arrow R in FIG. As a result of extensive research, the inventor of this invention discovered the following. That is, when cutting the CA mortar layer 103 using the cutter blade 4 shown in FIG. 7, the valve 52 shown in FIG. 1, and the pouring pipe 53 shown in FIG. 8, the cutting speed is 0.46. m/min If the water usage rate is 0.33/min, the supplied water will reach CA mortar layer 103.
Everything inside evaporates completely. In addition, due to the heat of vaporization during evaporation, the CA mortar layer 1
The temperature inside 03 is 55℃ which is the melting point of CA mortar.
It can be held below. Therefore, it was found that the notch 44 of the cutter blade 4 was never clogged with CA mortar. In use, first, the cutter A for repairing the cement asphalt mortar layer is placed on the track slab 102 where the CA mortar layer 103 is to be repaired. Next, remove the fixing metal fitting 29 from the fixing metal fitting 28, fold down the cutter blade holding plate 18 using the hinge 17,
The cutter blade holding plate 18 is brought into close contact with the right side plate 27 of the vehicle body 1 using the fixing fittings 26. Thereby, the cutter blade 4 is temporarily held in a horizontal state. That is, the fixing metal fitting 26, the cutter blade holding plate 18, the right side plate 27, the hinge 17, etc. constitute a part of the means for making the cutter blade 4 rotatable in the horizontal direction. Next, adjust the height of the lifting plate 22 using the screws 21, 21, and adjust the height of the cutter blade 4 to CA.
Match the mortar layer 103 to the height to be cut. In other words, the screw 21, the elevating plate 22, the cutter blade holding plate 18, etc. constitute adjusting means for adjusting the position of the cutter blade 4 in the vertical direction. Next, loosen the screw 42 and remove the cutter blade 4.
is rotatable around a rotation shaft 23. Next, the amount of water poured out from the spout 54 is adjusted by the valve 52. With this adjustment, the spout 54
Water is dripped onto the upper surface of the cutter blade 4 almost continuously. Next, the drive mechanism 2 is connected to a power source, the cutter blade 4 is rotated, and the right side of the cover plate 40 is pressed by hand to cut the CA mortar layer 103 while moving the cutter blade 4 accurately to a predetermined depth (usually into the CA mortar layer 103 to a depth of 10 cm). When the cutter blade 4 is pushed in accurately to a predetermined depth, the cutter blade 4 is fixed by tightening the screw 42. As a result, the cutter blade 4 is adjusted in the front, rear, right and left directions and fixed, and is also rotatable while being firmly held horizontally. That is, the above-mentioned chiyoscrew 21, elevating plate 22, cutter blade holding plate 18, fixing metal fittings 26,
The cutter blade 4 is mounted so as to be adjustable up and down, forward and backward, and left and right by the right side plate 27, hinge 17, etc., screw 42, deflection shaft 6, cover plate 40, rotation shaft 23, guide plate 24, etc. , which can be rotated horizontally. Next, the wheel 11 side and the handle 16 side are connected by the clutch 13, and the vehicle body 1 is moved forward while operating the handle 16, and the CA mortar layer 103 is cut by the cutter blade 4. At this time, as shown in FIG. 4, since the front part of the right wheel 11 is slightly tilted to the left with respect to the traveling direction P of the vehicle body 1, the entire vehicle body 1 moves forward while trying to turn to the left. Therefore, the cutter blade 4
A pressing force constantly acts on the sides of the CA mortar layer 103. Therefore, cutter blade 4
is completely prevented from cutting the CA mortar layer 103 to a depth shallower than a predetermined depth. That is, by tilting the front part of the right wheel 11 slightly to the left with respect to the traveling direction P, the entire vehicle body 1 is biased to the left, and the cutter blade 4 is moved to a shallower depth than a predetermined depth.
This prevents the CA mortar layer 103 from being cut. That is, tilting the front part of the right wheel 11 slightly to the left with respect to the traveling direction P biases the vehicle body 1 toward the side opposite to the side where the cutter blade 4 is attached (in this embodiment, the left side). It constitutes a biasing means. In addition, since the pulley 20 moves while contacting the side surface of the track slab 102, the vehicle body 1 moves along the track slab 102.
It is not possible to go beyond a certain width to the left side in the traveling direction P from the side of 2. Therefore, cutter blade 4
It is also completely prevented that the CA mortar layer 103 is cut deeper than a predetermined depth. That is, the pulley 20 constitutes a holding means that maintains the distance between the vehicle body 1 and the side surface of the track slab 102 to a certain width or more. Cutting of the CA mortar layer 103 according to the above procedure may be performed two or more times by changing the height of the cutter blade 4 using the screws 21 and 22. After cutting the CA mortar layer 103 with the cutter blade 4 as described above, by hitting the side surface of the CA mortar layer 103 with a hammer or the like, the portion of the CA mortar layer 103 cut by the cutter blade 4 can be easily broken. It can be removed. After the work is completed, the cutter blade holding plate 18 is folded up as shown in FIG. Thereby, the cutter A for repairing the cement asphalt mortar layer according to the present invention can be easily stored and transported with the cutter blade 4 attached. The present invention is not limited to the embodiments described above, but may be carried out as follows. The urging means for urging the car body 1 to the side opposite to the side on which the cutter blade 4 is attached is not limited to the one in the above-mentioned embodiment, and for example, as shown in FIG. In this case, a wheel 30 whose right side diameter is slightly smaller than the left side diameter may be used to bias it to the left side. The cutter blade 4 is attached to the deflection shaft 6 at intervals 2
It is also possible to attach two or more CA mortar layers and cut the CA mortar layer 103 at two or more locations at once. In this case, it is necessary to provide the spout pipe 53 with the same number of spouts 54 as the number of cutter blades 4 so that one spout 54 is arranged above each cutter blade 4. A V-belt and a V-belt wheel may be used without using the flexible shaft 6. Furthermore, the drive mechanism 2 may be a gasoline engine or the like. [Effects of the invention] The present invention is constructed as described above, and includes a car body for running on a track slab, a drive mechanism mounted on the car body, and a drive mechanism mounted on one side of the car body that can be positioned up and down, front and back, and left and right. a cutter blade that is mounted so as to be rotatable in a horizontal direction by the drive mechanism;
Providing a biasing means on the wheels of the vehicle body to bias the vehicle body toward the opposite side of the one side portion, and holding the vehicle body to maintain a distance between the vehicle body and the side surface of the track slab to a certain width or more. By providing the means, it is possible to accurately remove the CA mortar layer to a certain depth, and it is also possible to remove it extremely easily and efficiently. Therefore, it is possible to completely prevent the occurrence of a situation in which the CA mortar layer 103 has to be removed to a shallower depth than a predetermined depth and the construction work has to be restarted. In addition, the CA mortar layer was removed too deeply, and the amount of resin that had to be filled into the void after removal was large.
It is also possible to completely prevent the occurrence of a situation in which material costs increase. It is also possible to reduce labor costs by reducing the number of workers. In addition, a water tank and a water supply mechanism that evenly sprays a small amount of water from the tank onto the cutting edge of the cutter blade are installed.
In addition, by providing a wide notch between adjacent teeth of the cutter blade at least near the tip, clogging between the teeth of the cutter blade does not occur, and CA mortar No water remains after layer cutting. Therefore, the cutting ability of the cutter blade does not deteriorate, and the adhesion between the resin filled in after the CA mortar layer is removed and the concrete does not deteriorate.

[Brief explanation of drawings]

Figures 1 to 8 and 12 show one embodiment of the present invention, in which Figure 1 is a plan view, Figure 2 is a right side view, Figure 3 is a rear view, and Figure 4 is a diagram of the wheels. 5 and 6 are partially cutaway perspective views, FIG. 7 is a plan view of the cutter blade, FIG. 8 is a partially cutaway side view, and FIGS. 9 to 11 are respectively A plan view showing another embodiment of the cutter blade, FIG. 12 is a partially cutaway plan view showing the relationship between the cutter blade and the spout, etc., FIG. 13 is a front view showing another embodiment of the wheel,
Figures 14 and 15 are an end view and a plan view of the Shinkansen track, respectively. Figure 16 is a plan view of a cutter blade that the inventor used experimentally before the invention was completed. Figure 17 is the rotational speed of the cutter blade. It is a graph which shows the relationship between and the temperature in a CA mortar layer. A... Cutter for repairing cement asphalt mortar layer, 1... Vehicle body, 2... Drive mechanism, 3... Water tank, 4
... cutter blade, 5 ... water supply mechanism, 6 ... deflection shaft, 1
0,11...wheel, 16...handle, 20...pulley,
21...Chiyou screw, 22...Elevating plate, 23...Rotating shaft, 24...Guide plate, 25...Guide groove, 40...Cover plate, 41...Rotating arm, 42...Chiyou screw, 43
... tooth, 44 ... notch, 50 ... water supply pipe, 51 ... adjustment mechanism, 52 ... valve, 53 ... spout pipe, 54 ... spout, 101 ... roadbed concrete, 102 ... track slab, 103 ... cement asphalt mortar layer ( CA mortar layer).

Claims (1)

[Scope of utility model registration request] A car body for operation on a track slab installed on a concrete roadbed through a cement asphalt mortar layer, a drive mechanism and a water tank installed on the car body, and a drive mechanism and a water tank located on one side of the car body vertically, front and rear, left and right. a cutter blade that is adjustable and rotatable in the horizontal direction by the drive mechanism; and a water supply mechanism that is connected to the water tank and uniformly applies a small amount of water in the water tank to the cutting edge of the cutter blade; Providing biasing means on the wheels of the vehicle body for biasing the vehicle body toward the opposite side of the one side portion, and holding means on the vehicle body for maintaining a distance between the vehicle body and the side surface of the track slab to a certain width or more. A cutter for repairing a cement asphalt mortar layer, characterized in that a wide notch is provided at least near the tip between adjacent teeth of the cutter blade.