Joint material removal device

Abstract

To provide a joint material removal device which is equipped with a vehicle having a frame, front wheels and rear wheels, and a prescribed high-pressure water injection device, and which effectively injects high-pressure water according to the width of a pavement joint and the condition of an old existing joint material, thereby reliably removing the old existing joint material from the pavement joint, which is the installation location.SOLUTION: A joint material removal device 1 includes a vehicle 2 having a frame 21, front wheels 22 and rear wheels 23, and a high-pressure water injection device 3 that injects high-pressure water toward an existing joint material to be removed. Such joint material removal device 1 can effectively inject high-pressure water according to the width of the pavement joint and the condition of the old existing joint material, thereby reliably removing the old existing joint material from the pavement joint where new joint material is to be installed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a joint material removal device, and more specifically, to a joint material removal device including a vehicle having a base, front wheels and rear wheels, and a high-pressure water injection device that injects high-pressure water toward existing joint material to be removed, and a sludge water recovery means that recovers sludge water containing the removed joint material, the sludge water recovery means being provided on the ground side of the base and connected to a negative pressure device that supplies negative pressure to suck in sludge water, and a water-passing hose through which the sludge water passes. [Background technology]

[0002] In paved roads, rainwater and other water seeps under the pavement through the joints (joints) and edges of the pavement on the road surface, weakening the roadbed and reducing the durability of the road. To prevent this, conventional paved roads use rubber asphalt, elastomer, emulsion type, urethane, polysulfide, and other joint materials in the pavement joints to waterproof them.

[0003] On the other hand, since the installed joint material deteriorates over time due to the effects of temperature changes, ultraviolet rays, rainwater, etc., the old existing joint material is removed and a new joint material is installed, and the joint material is periodically replaced. In such periodic replacement of joint materials, in order to remove the old existing joint material, a joint material removal device (Patent Document 1) that cuts the joint material to be removed by contacting a removal blade (rotary blade / cutting blade) with the side of the joint material to be removed, and a joint material removal tool (Patent Document 2) that moves a removal blade (rotary blade / cutting blade) while contacting the side or bottom of the joint material to be removed, and the like have been used. However, with the joint material removal device and joint material removal tool that use a removal blade (rotary blade / cutting blade), pieces or fragments of the cut or peeled joint material remain at the installation location, so further washing or cleaning processes are required (see FIG. 16 of Patent Document 1), and it has been difficult to completely remove the joint material to be removed only by the cutting or peeling process.

[0004] On the other hand, in concrete chipping work, a concrete chipping device that uses high-pressure water generated by a water jet has been used in the past. This concrete chipping device can chip concrete and also collect the resulting wastewater without leaking it outside the work area (Patent Document 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2020-020187 [Patent Document 2] Patent Publication No. 2006-348520 [Patent Document 3] Patent Publication No. 2022-070082 Summary of the Invention [Problem to be solved by the invention]

[0006] As with chipping concrete, the use of high-pressure water can be an effective method for removing existing joint material. However, unlike chipping concrete, when removing existing joint material, the joint material is installed in pavement joints, so measures must be taken depending on the width of the pavement joints and the condition of the old existing joint material.

[0007] The present invention has been made to solve the above-mentioned problems, and aims to provide a joint material removal device that is equipped with a vehicle having a frame, front wheels and rear wheels, and a specified high-pressure water spraying device, and that can effectively spray high-pressure water in accordance with the width of the pavement joint and the condition of the old, existing joint material, thereby reliably removing the old, existing joint material from the pavement joint where it is installed, and further equipped with a specified sludge water recovery means, and that can efficiently recover sludge water containing the removed joint material. [Means for solving the problem]

[0008] As a result of extensive research, the inventors have discovered that a joint removal device equipped with a vehicle having a frame, front and rear wheels, and a specified high-pressure water spraying device can effectively spray high-pressure water in accordance with the width of the pavement joint and the condition of the old, existing joint material, thereby reliably removing the old, existing joint material from the pavement joint where it is installed, and that a joint removal device equipped with a specified sludge water recovery means can efficiently recover sludge water containing the removed joint material, and have completed the following inventions.

[0009] (1) A joint material removal device comprising a vehicle having a base, front and rear wheels, and a high-pressure water spraying device that sprays high-pressure water toward an existing joint material to be removed, wherein the high-pressure water spraying device comprises a high-pressure nozzle connected to a high-pressure pump that supplies high-pressure water and sprays the high-pressure water, and a high-pressure hose through which the high-pressure water passes, the high-pressure nozzle is connected to the high-pressure pump via the high-pressure hose and is disposed on the base so that an injection hole formed in the high-pressure nozzle faces the existing joint material to be removed, and the injection hole formed in the high-pressure nozzle sprays the high-pressure water supplied from the high-pressure pump toward the existing joint material to be removed.

[0010] (2) A joint material removal device as described in (1) above, further comprising a sludge water recovery means for recovering sludge water containing the removed joint material, the sludge water recovery means being provided on the ground side of the platform and equipped with a sludge water suction mechanism connected to a negative pressure device that supplies negative pressure to suck in sludge water, and a water-passing hose through which the sludge water passes, the sludge water suction mechanism being connected to the negative pressure device via the water-passing hose and using the negative pressure supplied from the negative pressure device to suck in the sludge water.

[0011] (3) The sludge water suction mechanism has three suction ports and a skirt portion covering the space between the ground side of the stand through which the fixed casing is inserted and the ground and the three suction ports, the skirt portion consisting of an outer skirt and an inner skirt arranged to surround the fixed casing on the ground side of the stand and a front skirt arranged forward in the direction of travel, two of the three suction ports are surrounded by the outer skirt and arranged in a line up in the front and rear of the direction of travel, straddling the inner skirt, and the other suction port (front suction port) arranged forward in the direction of travel is arranged to be surrounded by the front skirt, in the joint material removal device described in (2).

[0012] (4) A joint material removal device described in any one of (1) to (3), wherein the high-pressure nozzle is arranged on the stand so as to be inclined in the direction of travel or in the opposite direction to the direction of travel.

[0013] (5) A joint material removal device described in any one of (1) to (4), wherein the high-pressure nozzle has a plurality of nozzles.

[0014] (6) A joint material removal device described in any one of (1) to (5), wherein the high-pressure pump is a water jet pump.

[0015] (7) A joint material removal device described in any one of (1) to (6) that is equipped with a self-propelled mechanism. Effect of the Invention

[0016] The joint material removal device of the present invention can effectively spray high-pressure water according to the width of the pavement joint and the condition of the old, existing joint material, thereby reliably removing the old, existing joint material from the pavement joint where it is installed, and can also efficiently and reliably recover sludge water containing the removed joint material. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a left side view of the joint material removal device 1 according to the present embodiment in a state in which the high-pressure nozzle 33 is disposed at the highest position. [Diagram 2] FIG. 2 is a left side view of the joint material removal device 1 according to the present embodiment, in a state in which the high-pressure nozzle 33 is disposed at a relatively low position. [Diagram 3] FIG. 2 is a right side view of the joint material removal device 1 according to the present embodiment in a state in which the high-pressure nozzle 33 is disposed at the highest position. [Figure 4] FIG. 2 is a bottom view of the joint material removing device 1 according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the joint material removing device according to the present invention will be described with reference to the drawings. Note that the drawings are used to explain the technical features of the present invention, and the configuration and various processing procedures described therein are not intended to be limited to those described in the drawings unless otherwise specified.

[0019] The configuration of the joint material removal device 1 according to this embodiment will be described. As shown in Figures 1 to 3, the joint material removal device 1 according to this embodiment includes a vehicle 2 having a frame 21, front wheels 22 and rear wheels 23, and a high-pressure water spraying device 3 that sprays high-pressure water (not shown) toward an existing joint material (not shown) to be removed.

[0020] The front wheels 22 and rear wheels 23 of the joint material removal device 1 in this embodiment are circular objects located one behind the other under the stand 21, and can rotate around an axis to enable movement on the ground, and may be endless tracks (Caterpillar (registered trademark)).

[0021] On the other hand, as shown in Figures 1 and 2, the high-pressure water spraying device 3 of the joint material removal device 1 according to this embodiment includes a high-pressure nozzle 33 connected to a high-pressure pump 31 that supplies high-pressure water (not shown) and sprays the high-pressure water, and a high-pressure hose 32 through which the high-pressure water passes, and the high-pressure nozzle 33 is connected to the high-pressure pump 31 via the high-pressure hose 32. Such a high-pressure pump 31 is not particularly limited as long as it does not impair the features of the present invention, and any high-pressure pump 31 that can be appropriately selected by a person skilled in the art can be used, but it is preferably a water jet pump. Such a water jet pump is also not particularly limited as long as it does not impair the features of the present invention, and any water jet pump that can be appropriately selected by a person skilled in the art can be used.

[0022] 1 and 2, the high-pressure nozzle 33 is disposed on the stand 21 so that the injection hole 34 formed on the high-pressure nozzle 33 faces the existing joint material to be removed. Basically, the high-pressure nozzle 33 is disposed on the stand 21 so that the injection hole 34 is located directly above the pavement joint (groove) where the existing joint material is to be installed. If the width of the high-pressure water injected from the injection hole 34 of the high-pressure nozzle 33 is too narrow compared to the width of the pavement joint, as shown in FIG. 1, the high-pressure nozzle 33 can be disposed on the stand 21 so that the high-pressure nozzle 33 is in a high position in order to move the injection hole 34 away from the pavement joint, and if it is too wide, the high-pressure nozzle 33 can be disposed on the stand 21 so that the high-pressure nozzle 33 is in a low position in order to move the injection hole 34 closer to the pavement joint, as shown in FIG. 2. Furthermore, as shown in Figs. 1 and 2, the high-pressure nozzle 33 can be disposed on the base 21 so as to be inclined toward the traveling direction or the opposite direction to the traveling direction.

[0023] Next, the sludge water recovery means 4 of the joint material removal device 1 according to this embodiment is provided on the ground side of the stand 21 (the bottom surface of the joint material removal device 1 according to this embodiment) as shown in Figs. 1 to 4, and includes a sludge water suction mechanism 43 that is connected to a negative pressure device 41 that supplies negative pressure and sucks in sludge water (not shown), and a water-passing hose 42 that passes sludge water. As shown in Figs. 1 and 2, the sludge water suction mechanism 43 is connected to the negative pressure device 41 via the water-passing hose 42, and sucks in the sludge water by utilizing the negative pressure supplied from the negative pressure device 41. Such a negative pressure device 41 is not particularly limited as long as it does not impair the features of the present invention, and a negative pressure device 41 that can be appropriately selected by a person skilled in the art can be used.

[0024] As shown in FIG. 4, the sludge water suction mechanism 43 of the joint material removal device 1 of this embodiment includes two suction ports 434 and one other suction port (front suction port) 435 that constitute three suction ports, and an outer skirt 431, an inner skirt 432 and a front skirt 433 that constitute skirt portions 431, 432, 433 that cover the space between the ground side of the stand 21 (the bottom surface of the joint material removal device 1 of this embodiment) and the ground and the two suction ports 434 and the front suction port 435 that constitute the three suction ports.

[0025] The outer skirt 431 and inner skirt 432 of the joint material removal device 1 of this embodiment are arranged to surround the injection hole 34 or the high-pressure nozzle 33 and the injection hole 34 arranged on the ground side of the frame 21, as shown in Figure 4, and the front skirt 433 of the joint material removal device 1 of this embodiment is arranged forward in the direction of travel on the ground side of the frame 21 (the bottom surface of the joint material removal device 1 of this embodiment), as shown in Figure 4.

[0026] 4, the two suction ports 434 of the joint material removal device 1 according to this embodiment are surrounded by the outer skirt 431, and are arranged side by side in the forward and backward directions in the traveling direction so as to straddle the inner skirt 432, while the other suction port (front suction port) 435 of the joint material removal device 1 according to this embodiment is arranged so as to be surrounded by the front skirt 433. In this case, the front skirt 433 may be configured and arranged so as to share a part with the outer skirt 431 to form the outer skirt / front skirt shared portions 431 / 433, as shown in FIG. 4, or may be configured and arranged so as to surround the front suction port 435 separately from the outer skirt 431 (not shown). When outer skirt 431 and front skirt 433 are provided partially in common, the edges of the portions excluding outer skirt / front skirt common portions 431 / 433 are bordered from the inside to the outside with rubber material and brush material in that order (not shown), the brush plays a role in preventing sludge water from flowing out of outer skirt 431 and front skirt 433, and the rubber material plays a role in protecting the brush material. Such brush material and rubber material are not particularly limited as long as they do not impair the features of the present invention, and brush material and rubber material that can be appropriately selected by a person skilled in the art can be used.

[0027] In addition, a caster-mounted lift-up device 24 may be provided in front of the platform 21 of the joint material removal device 1 of this embodiment in the direction of travel, as shown in Figures 1 to 4, and an air intake 25 may be formed in the platform 21 of the joint material removal device 1 of this embodiment, as shown in Figure 4.

[0028] The number of nozzles in the high-pressure nozzle 33 of the joint material removal device 1 according to this embodiment may be one or more. The number of nozzles in the high-pressure nozzle 33 of such a joint material removal device 1 according to this embodiment is preferably two or three, and more preferably two. Figures 1 to 4 show a case where the number of nozzles in the high-pressure nozzle 33 of the joint material removal device 1 according to this embodiment is two.

[0029] 1 to 3, the joint material removal device 1 according to this embodiment can include a self-propelled mechanism 5. Such a self-propelled mechanism 5 can include, for example, a self-propelled mechanism operation unit 51, a frame 52, a motor 53, a gear 54, a main body connection unit 55, and self-propelled mechanism wheels 56. The main body connection unit 55 connects the vehicle 2 of the joint material removal device 1 according to this embodiment to the self-propelled mechanism 5. Also, a high-pressure pump operation unit 35 can be provided so as to be connected to the self-propelled mechanism operation unit 51.

[0030] Furthermore, as shown in Figs. 1 to 3, a guide bar 6 for guiding a pavement joint (groove) may be provided at the front of the joint material removal device 1 according to this embodiment in the traveling direction, so as to be positioned on the vertical center line toward the traveling direction D, and the joint material removal device 1 according to this embodiment may be equipped with a generator 7 as shown in Fig. 3. When the joint material removal device 1 according to this embodiment is not equipped with a generator 7, the joint material removal device 1 according to this embodiment is supplied with power from an external source. Furthermore, the joint material removal device 1 according to this embodiment can also be equipped with a transformer (not shown).

[0031] Next, we will explain the operation of the joint material removing device 1 according to this embodiment. Note that, among the operations of the joint material removing device 1 according to this embodiment, the same reference numerals are used for the configurations that are the same as or correspond to the configurations of the joint material removing device 1 according to this embodiment described above, and the repeated explanation of the configurations explained in the joint material removing device 1 according to this embodiment may be omitted.

[0032] First, the joint material removal device 1 according to the present embodiment is placed so that the vertical center line of the joint material removal device 1 according to the present embodiment is located directly above the pavement joint (groove) where the existing joint material is to be installed. At this time, the guide bar 6 is also positioned directly above the pavement joint.

[0033] Next, the high-pressure nozzle 33 is disposed on the frame 21 so that high-pressure water of a width that matches the width of the pavement joint can be sprayed from the nozzle 34. After that, high-pressure water is generated from the high-pressure pump 31 and supplied to the high-pressure nozzle 33 via the high-pressure hose 32, and the high-pressure water supplied from the high-pressure pump 31 is sprayed from the nozzle 34 of the high-pressure nozzle 33 toward the existing joint material to be removed. This allows high-pressure water to be sprayed from the nozzle 34 of the high-pressure nozzle 33 with a width that corresponds to the width of the pavement joint where the existing joint material to be removed is installed. For example, as shown in FIG. 1, when the high-pressure nozzle 33 is disposed on the frame 21 so that the high-pressure nozzle 33 is in a high position, the high-pressure water is sprayed from the nozzle 34 of the high-pressure nozzle 33 at the widest angle, and when the high-pressure nozzle 33 is disposed on the frame 21 so that the high-pressure nozzle 33 is in a low position, as shown in FIG. 2, the high-pressure water is sprayed from the nozzle 34 of the high-pressure nozzle 33 at the narrowest angle.

[0034] If the width of the high-pressure water sprayed from the nozzle 34 of the high-pressure nozzle 33 is too wide or too narrow compared to the width of the pavement joint, the supply of high-pressure water from the high-pressure pump 31 is temporarily stopped, and the high-pressure nozzle 33 is again disposed at the desired position of the frame 21, as shown in Figures 1 and 2. In this way, the high-pressure water can be effectively sprayed according to the width of the pavement joint, and the existing joint material to be removed can be reliably removed.

[0035] In addition, when the high-pressure nozzle 33 has multiple nozzles, preferably 2 or 3 nozzles, and more preferably 2 nozzles, it is relatively easy to handle and operate, and since high-pressure water is continuously sprayed from the nozzle holes 34 of the multiple high-pressure nozzles 33 toward the existing joint material to be removed, the existing joint material to be removed can be removed more reliably.

[0036] Furthermore, as shown in Figures 1 and 2, by arranging the high-pressure nozzle 33 on the frame 21 so that it is inclined in the direction of travel or in the opposite direction to the direction of travel, high-pressure water can be sprayed at an angle from the spray hole 34 of the high-pressure nozzle 33. This makes it easier for the high-pressure water sprayed toward the existing joint material to be removed to pierce the existing joint material to be removed, making it possible to more reliably remove the existing joint material to be removed.

[0037] In addition, when the high-pressure pump 31 is a water jet pump, higher pressure ultra-high pressure water is sprayed from the nozzle 34 of the high-pressure nozzle 33, and the ultra-high pressure water sprayed toward the existing joint material to be removed penetrates further into the existing joint material to be removed, making it possible to remove the existing joint material to be removed even more reliably.

[0038] Furthermore, if a lift-up device with casters 24 is provided in front of the platform 21 in the direction of travel, the lift-up device with casters 24 can be used to lift up the platform 21 in front of the direction of travel. This allows high-pressure water to be sprayed more obliquely from the injection hole 34 of the high-pressure nozzle 33 toward the existing joint material to be removed, making it possible to spray high-pressure water in accordance with the condition of the existing joint material to be removed, and making it possible to remove the existing joint material to be removed even more reliably.

[0039] In this way, by effectively spraying high-pressure water according to the width of the pavement joint and the condition of the existing old joint material to be removed, while advancing the joint material removal device 1 of this embodiment according to the guide bar 6, the existing joint material to be removed can be removed reliably and continuously.Furthermore, by using the self-propelled mechanism 5 to effectively spray high-pressure water according to the width of the pavement joint and the condition of the existing old joint material to be removed, while self-propelling the joint material removal device 1 of this embodiment forward according to the guide bar 6, the existing joint material to be removed can be removed reliably, continuously and easily.

[0040] When using the self-propelled mechanism 5 to effectively spray high-pressure water according to the width of the pavement joint and the condition of the old existing joint material to be removed, while self-propelling the joint material removal device 1 of this embodiment to advance according to the guide bar 6, the worker connects the vehicle 2 of the joint material removal device 1 of this embodiment to the self-propelled mechanism 5 using the main body connecting part 55, and then operates the self-propelled mechanism operating part 51 to drive the motor 53 and rotate the self-propelled mechanism wheels 56 to move in the direction of travel D, and by operating the gear 54 on the self-propelled mechanism operating part 51 while holding the handle of the frame 52, the worker can advance the joint material removal device 1 connected to the self-propelled mechanism 5.

[0041] Meanwhile, the sludge water containing the removed joint material can be collected by the sludge water collection means 4. Specifically, negative pressure is supplied from the negative pressure device 41 to a sludge water suction mechanism 43 connected to the negative pressure device 41 via a water passage hose 42, and the sludge water suction mechanism 43 utilizes the negative pressure supplied from the negative pressure device 41 to collect the sludge water containing the removed joint material.

[0042] As described above, the sludge water suction mechanism 43 is equipped with two suction ports 434 and another suction port (front suction port) 435, an outer skirt 431 and an inner skirt 432 arranged to surround the injection hole 34 or the high-pressure nozzle 33 and the injection hole 34 arranged on the ground side of the frame 21 (the bottom surface of the joint material removal device 1 in this embodiment), and a front skirt 433 arranged forward in the direction of travel, and the sludge water containing the removed joint material is first sucked in from the front suction port 435, but any sludge water that remains and is not sucked in from the front suction port 435 is prevented from flowing out of the outer skirt 431 and the front skirt 433 by the outer skirt 431 and the front skirt 433, which have edges that are bordered from the inside to the outside in the order of rubber material and brush material, and therefore is still sucked in from the front suction port 435 or from the two suction ports 434. Although the space surrounded by the inner skirt 432 tends to become low pressure due to the negative pressure supplied from the negative pressure device 41, this can be prevented by the air intake 25 formed in the base 21.

[0043] According to the joint material removing device 1 according to this embodiment as described above, the following effects can be obtained. 1. High-pressure water can be effectively sprayed depending on the width of the pavement joint and the condition of the existing joint material to be removed, ensuring the removal of the existing joint material from the pavement joint, which is the installation site. 2. The sludge water containing the removed joint material can be collected efficiently and reliably. 3. By moving forward on its own, the existing joint material to be removed can be removed reliably, continuously and easily.

[0044] The joint material removing device according to the present invention is not limited to the above-described embodiments, and may be modified as appropriate without departing from the characteristics of the present invention. For example, configurations other than those in the above-described embodiments may be adopted as appropriate without departing from the characteristics of the present invention. [Explanation of symbols]

[0045] 1 Joint material removal device 2 Vehicles 3. High-pressure water injection device 4. Sludge water recovery method 5 Self-propelled mechanism 6 Guide bar 7. Generator 21 Mount 22 Front wheel 23 Rear wheel 24 Caster-mounted lift-up device 25 Air intake 31 High Pressure Pump 32 High pressure hose 33 High Pressure Nozzle 34 Injection hole 35 High pressure pump operation section 41 Negative pressure device 42 Water hose 43 Sludge water suction mechanism 51 Self-propelled mechanism operation section 52 Frames 53 Motor 54 Gear 55 Main body connection part 56 Self-propelled mechanism wheels 431 Outer Skirt 432 Inner Skirt 433 Front Skirt 434 Two suction ports 435 Another suction port (front suction port) 431·433 Outer skirt·Front skirt shared part 431·432·433 Skirt section D Direction of travel

Claims

1. A vehicle having a frame, front wheels, and rear wheels; A high-pressure water injection device that injects high-pressure water toward the existing joint material to be removed; A joint material removal device comprising: The high-pressure water injection device includes a high-pressure nozzle connected to a high-pressure pump for supplying high-pressure water and for injecting the high-pressure water, and a high-pressure hose through which the high-pressure water passes, The high-pressure nozzle is connected to the high-pressure pump via the high-pressure hose, and is disposed on the stand so that an injection hole formed in the high-pressure nozzle faces the existing joint material to be removed; The device, wherein an injection hole formed in the high-pressure nozzle injects the high-pressure water supplied from the high-pressure pump toward an existing joint material to be removed.

2. a sludge water recovery means for recovering the sludge water containing the removed joint material, the sludge water recovery means being provided on the ground side of the frame and including a sludge water suction mechanism connected to a negative pressure device that supplies negative pressure and sucks in the sludge water, and a water passage hose through which the sludge water passes; The joint material removal device according to claim 1 , wherein the sludge water suction mechanism is connected to the negative pressure device via the water passage hose and sucks the sludge water by utilizing the negative pressure supplied from the negative pressure device.

3. The joint material removing device according to claim 1 , wherein the high-pressure nozzle comprises a plurality of nozzles.

4. The joint material removal device according to claim 1 , wherein the high pressure pump is a water jet pump.

5. The joint material removal device according to claim 1 , further comprising a self-propelled mechanism.

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