JP2008095495A - Manhole cover removing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manhole cover removing machine which crushes, drills, and removes a paved road surface around a manhole cover in a short time, substantially saves manpower and time required for removal of the manhole cover, reduces noise that is made at the removal of the manhole cover, neatly restores the original appearance of the paved road around the manhole cover after the completion of manhole cover repair/reinforcement work following the removal of the manhole cover, and allows separate replacement of bits to facilitate replacement of a damaged bit to endure long period of service. <P>SOLUTION: The manhole cover removing machine includes a digger 10, a hydraulic motor 20 which is disposed on the front end of a boom 12 of the digger 10 and the front end 11a of a piston 11 of a hydraulic cylinder and is supplied with hydraulic pressure from the digger 10 to generate a torque, a rotating disc 30 which is connected to a motor shaft 23 of a hydraulic motor 22 built in the hydraulic motor 20 and has a diameter larger than that of the manhole cover, and bit means 40 which are disposed on the underside periphery of the rotating disc 30 and circularly crush and dig the paved road surface around the manhole cover. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a manhole cover removing machine used for repairing and reinforcing manholes. More specifically, the present invention relates to a rotating disk equipped with a bit for crushing and excavating a road pavement surface and receiving hydraulic pressure from the excavator. The present invention relates to a manhole cover removing machine that rotates and rotates a rotating disk at high speed to crush and excavate the road pavement surface around the manhole cover.

  Among the terms used in this specification, “manhole cover” includes a manhole cover and a manhole cover support frame. Removal of the manhole cover is performed by crushing and excavating the road pavement surface around the manhole cover. It is meant to be used.

  A conventional technique for removing the manhole cover is to cut the periphery of the manhole cover into a rectangle with an asphalt cutter, crush and drill the periphery of the cut manhole cover with a breaker, and remove the manhole cover manually. Was previously known.

  Such a manhole cover removing method has a drawback that it takes a long working time as well as a generated noise and a large amount of labor.

  In addition to the conventional manhole cover removal method, the following techniques are known.

  The "pavement plate cutting device" of Patent Document 1 is a pavement plate cutting device installed on the boom of a heavy construction machine equipped with a cutting bit that cuts a road pavement plate into a circular groove. This requires not only the installation of a wide variety of complicated means to install the column, but also the disadvantage of requiring a long time for the preparation process for using the device, as well as the cutting bit edge. There were also disadvantages that could not be exchanged.

  In addition, the “cutting device used in the manhole iron lid maintenance and repair method” in Patent Document 2 is for cutting a road layer with a wing-shaped cutting blade so that the cutting peripheral surface is a slope, and has a hanging rod and a skirt. In addition to the disadvantage that the apparatus is increased in size, there is also the disadvantage that the cutting blade cannot be replaced and used.

  And since the "road surface circular cutting machine" of Patent Document 3 separates the manhole cover and cuts it with a cylindrical bit in which the shaft of the cutter is installed in the through hole of the attachment, the manhole cover cannot be separated. Not only is there a problem that it cannot be used, but there is also a problem that the cutting blade cannot be replaced.

As described above, the conventional manhole cover removal method is used in a place where the apparatus is complicated and the preparation process for using the apparatus takes a long time, the apparatus is large, or the manhole cover cannot be separated. In addition to the drawbacks of not being able to do so, there is a problem that the cutting blade cannot be replaced and cannot be used for a long time.
Japanese Patent Laid-Open No. 11-323821 JP-A-9-158114 JP-A-4-231519

  The present invention has been made to solve the various disadvantages and problems that occur when the conventional manhole cover is removed, and the object of the present invention is to shorten the road pavement around the manhole cover. An object of the present invention is to provide a manhole cover removing machine that can greatly reduce the manpower and time required for removing the manhole cover by crushing and excavating it in time.

  Another object of the present invention is to provide a manhole cover removing machine that reduces the noise generated when the manhole cover is removed.

  Still another object of the present invention is to restore the pavement of the road to its original appearance when the manhole cover is restored to its original state after the manhole cover is removed and the repair work is completed. It is to provide a manhole cover removal machine that can do.

  It is still another object of the present invention to provide a manhole cover removing machine that can replace bits individually and can easily replace damaged bits and can be used for a long time.

  In order to achieve the above object, the manhole cover removing machine of the present invention is installed at the excavator, the tip of the boom of the excavator and the tip of the piston of the hydraulic cylinder, and generates rotational force by receiving hydraulic pressure from the excavator. A rotating motor having a diameter larger than that of the manhole cover, a road around the manhole cover, and a rotating plate coupled to a motor shaft of the hydraulic motor built in the hydraulic motor unit. And a bit means for crushing and excavating the paved surface into a circular shape.

  The present invention can greatly reduce the manpower and time required to remove the manhole cover by removing the manhole cover by crushing and excavating the road pavement surface around the manhole cover in a short time. In addition to reducing the noise generated as much as possible, after removing the manhole cover and completing the repair work for the manhole cover, when restoring the area around the manhole cover to the original state, the road pavement is the original appearance. The bit can be exchanged individually, so that the damaged bit can be easily exchanged and can be used for a long time.

  Hereinafter, preferred embodiments of a manhole cover removing machine according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram showing a configuration of a manhole cover removing machine according to an embodiment of the present invention that can be mounted on a vehicle, FIG. 2 is a perspective view of the manhole cover removing machine of the embodiment, and FIG. 3 is an embodiment. 4 is an exploded perspective view of the manhole cover removing machine, FIG. 4 is a cross-sectional view of the main part of the manhole cover removing machine of the embodiment, and FIG. 5 is an exploded perspective view of the bit means according to the embodiment. As shown in these drawings, the manhole cover removing machine of the embodiment is installed at the excavator 10, the tip of the boom 11 of the excavator 10 and the tip 11 a of the piston 11 of the hydraulic cylinder, and receives hydraulic pressure from the excavator 10. A rotary motor 30 for generating a rotational force, a motor shaft 23 of a hydraulic motor 22 built in the hydraulic motor unit 20, and having a diameter larger than that of the manhole cover, and a lower edge of the rotary disk 30. And a bit means 40 for crushing and excavating the road pavement surface around the manhole cover into a circle.

  The manhole cover removing machine includes a vehicle A on which the excavator 10 is mounted, and adjusts the water supply of the water stored in the water storage tank 51 and the water storage tank 51 installed in front of the loading platform of the vehicle A. The water supply device 50 further includes a water supply controller 52 and a water supply hose 53 that transfers water adjusted by the water supply controller 52 to the manhole cover removing means 60.

  As shown in FIGS. 2 and 3, the hydraulic motor unit 20 fixedly installed at the tip of the boom 12 of the excavator 10 and the tip 11 a of the piston 11 of the hydraulic cylinder includes a cylindrical body 21 in which a hydraulic motor is built, a cylinder A hydraulic motor 22 incorporated in the body 21, a motor shaft 23 of the hydraulic motor 22, and a bearing portion 24 in which a bearing that supports the motor shaft 23 of the hydraulic motor 22 is incorporated.

  A disc-shaped lid 21a fixed by welding is provided at the upper end of the cylindrical body 21, and brackets 25 and 25 'having coupling holes 25a and 25b are respectively fixed by welding on both sides of the upper surface of the lid 21a. An opening 21b for connecting a hydraulic hose is formed on one upper side surface of the body 21, and a cylindrical body flange 26 having a large number of bolt holes 26a formed at regular intervals is radially formed on the outer peripheral edge of the lower end of the cylindrical body 21. Fixed and installed, a bearing portion flange 27 in which a large number of bolt holes 27 a are formed at regular intervals is radially fixed and installed at the upper end of the bearing portion 24.

  Between the brackets 25 and 25 ', the tip of the boom 12 of the excavator 10 and the tip 11a of the piston 11 of the hydraulic cylinder remain inserted, and the first and second rotation pins 25c and 25d are connected to the brackets, respectively. The first and second rotating pins 25c and 25d are not detached from the brackets 25 and 25 'by the fixing pin 25e that is coupled through the holes 25a and 25b and penetrates the first and second rotating pins 25c and 25d. It is fixed.

  A through hole (not shown) is formed at the tip of the boom 12 of the excavator 10, and a second rotating pin 25d that has passed through the through holes 25b of both brackets 25 and 25 ′ is inserted into the through hole. The tip 11a of the piston 11 of the hydraulic cylinder is formed in a hollow cylindrical body, passes through the coupling hole 25a of both brackets 25 and 25 ', and the first rotation pin 25c is inserted into the hollow cylindrical body, so that the manhole The cover removing means 60 can be freely rotated.

  Therefore, the manhole cover removing means 60 attached to the tip of the boom 12 of the excavator 10 and the tip 11a of the piston 11 of the hydraulic cylinder is folded inward by rotating the removing means 60 by the boom 12 and the hydraulic cylinder of the excavator 10. Therefore, it can be conveniently mounted on the vehicle A with the manhole cover removing means 60 mounted.

  The cylindrical body 21 and the bearing portion 24 are connected to each other in a state where the bolt hole 26a of the cylindrical body portion flange 26 and the bolt hole 27a of the bearing portion flange 27 coincide with each other, and are fastened and fixed by bolts and nuts.

  The motor shaft 23 is formed in a polygonal column shape in which the lower portion protrudes toward the lower center of the cylindrical body 21 so that the motor shaft 23 can be surely coupled to the rotating plate 30. For this purpose, through holes 23a are formed, and a large number of through holes 23a can be formed.

  As shown in FIGS. 2 and 3, the turntable 30 is fixedly installed in a protruding manner at the center of the upper surface, and is generated at the time of road pavement surface crushing work, with a coupling member 31 coupled to the lower part of the motor shaft 23. In order to dissipate heat, a plurality of through holes 33 formed on the upper surface and a vertical outer peripheral portion 32 in which the outer peripheral edge is bent and extended downward and the bit means 40 is installed at the lower end. Yes.

  The coupling member 31 includes a cylindrical hole 31 a into which the lower part of the motor shaft 23 is inserted and a cylindrical coupling tool 31 c having a bolt hole 31 b that penetrates the side surface of the hole 31 a, and the coupling tool 31 c fixed to the upper surface of the rotating disk 30. The lower side of the fixing rib 31d is fixed to the upper surface of the rotating disk 30. The fixing rib 31d has a plurality of fixing ribs 31d.

  As shown in FIG. 5, the bit means 40 is inserted into a large number of bit support frames 41 fixed to the lower surface of the vertical outer peripheral portion 32 of the turntable 30 by welding and a large number of bit support frames 41, and fixed with rivets. One end of the bit support frame 41 includes a plurality of bits 42 having bit blades 42a. The bit support frames 41 form a set of two, and the side surfaces of the bit support frames 41 are welded to each other. A set of bit support frames 41 and a set of bit support frames 41 are installed at regular intervals.

  Here, the reason why the bit support frame 41 and the bit set 41 are set at regular intervals is that the asphalt concrete crushed in the rotating disk is discharged outside through the intervals to facilitate the work. It is.

  A bit insertion groove 41a is formed in the bit support frame 41, a protrusion 41b is formed along the center portion on the inner surface of the bit support frame 41 of the bit insertion groove 41a, and a fixed notch is formed on one side of the protrusion 41b. 41c is formed, and the outer surface of the bit 42 located at the portion inserted into the bit insertion groove 41a is formed with a concave groove 42b along the central portion, and the protrusion 41b is inserted into the concave groove 42b. The bit 42 is fixed to the bit support frame 41 by being riveted with a rivet 42c to the fixed notch 41c formed in 41b.

  The bit blade 42a of the bit 42 may be tilted to the left or right, or both the left and right sides may be tilted and the center portion may be a sharp portion.

  Here, the bit support frames 41 do not form a group, and may be individually installed, or many other than the two may form a group.

  The through-hole 42d formed in the center of the bit 42 is for conveniently transferring and storing a large number of bits 42 through a wire or the like.

  In this way, by configuring the bit means 40 in a form in which the bit 42 is inserted and fixed to the bit support frame 41, the damaged individual bits 42 can be easily replaced.

  Next, the operation and use of the manhole cover removing machine configured as described above will be described.

  The manhole cover removing machine is mounted on the vehicle A with the manhole cover removing means 60 mounted on the tip of the boom 12 of the excavator 10 and the tip 11a of the piston 11 of the hydraulic cylinder, and is transported to the manhole cover removing work site. The

  Thereafter, the manhole cover removing means 60 is set where the manhole cover should be removed. This is the same as placing the bucket in the excavation position in a conventional excavator.

  Thus, if the manhole cover removing means 60 is set at the place where the manhole cover should be removed, the bit blade 42a of the bit 42 provided in the bit means 40 comes into contact with the road pavement surface to be crushed and excavated. .

  In this state, the manhole cover removing means 60 is operated. At this time, the manhole cover removing means 60 supplies hydraulic pressure to the hydraulic motor unit 20 by driving the engine of the excavator 10 to drive the hydraulic motor unit 20 and also operate the water supply device 50.

  At this time, a hydraulic hose (not shown) is connected to the hydraulic motor unit 20 through a hydraulic hose opening 21 b formed on the upper side surface of the cylindrical body 21, and hydraulic pressure is supplied to the hydraulic motor unit 20.

  When hydraulic pressure is supplied to the hydraulic motor unit 20, the hydraulic motor 22 is operated to rotate the motor shaft 23, whereby the rotating plate 30 coupled to the motor shaft 23 rotates, and the vertical outer peripheral portion of the rotating plate 30. The bit means 40 fixed by welding to the lower surface of 32 rotates together with the turntable 30, so that the bit 42 rotates at a high speed while the bit blade 42a is in contact with the road pavement surface around the manhole cover, so that the manhole cover The surrounding road pavement will be crushed and excavated.

  When crushing and excavating the road pavement surface, water is sprayed onto the upper surface of the turntable 30 with the water supply hose 53 of the water supply device 50 and the water flows down to the bit 42 side. Thus, the generation of dust is reduced, and the heat generated from the bit 42 is cooled.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to these embodiments, and can be variously modified and implemented without departing from the scope of the present invention. is there.

  The present invention combines a manhole cover removing means having a bit for crushing and excavating a road pavement surface with an excavator, and receives a hydraulic pressure from the excavator to rotate a rotating plate of the manhole cover removing means at a high speed. It can be applied to a manhole cover removal machine that crushes and excavates the road pavement around the road.

The figure which shows the structure of the manhole cover removal machine which can be mounted in the vehicle by this invention. The perspective view of the manhole cover removal machine by this invention The exploded perspective view of the manhole cover removal machine by this invention Sectional view of the main part of the manhole cover removing machine according to the present invention. Exploded perspective view of bit means according to the invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Excavator, 11 ... Piston of hydraulic cylinder, 11a ... Tip of piston, 12 ... Boom, 20 ... Hydraulic motor part, 21 ... Cylindrical body, 21a ... Lid, 21b ... Opening part, 22 ... Hydraulic motor, 23 ... Motor Shaft, 23a ... through hole, 24 ... bearing portion, 25, 25 '... bracket, 25a, 25b ... coupling hole, 25c, 25d ... first and second rotating pins, 25e ... pin, 26 ... cylindrical body flange, 26a ... Bolt hole, 27 ... Bearing flange, 27a ... Bolt hole, 30 ... Turntable, 31 ... Coupling member, 31a ... Polygonal hole, 31b ... Bolt hole, 31c ... Coupling tool, 31d ... Fixing rib, 32 ... Vertical outer peripheral part 33 ... Through hole, 40 ... Bit means, 41 ... Bit support frame, 41a ... Bit insertion groove, 41b ... Rid, 41c ... Fixed notch, 42 ... Bit, 42 ... bit blade, 42b ... groove, 42c ... rivets, 42d ... through hole, 50 ... water supply device, 51 ... storage tank, 52 ... feed water control, 53 ... water supply hose, 60 ... manhole cover removal means, A ... vehicle

Claims (14)

Excavator 10;
A hydraulic motor unit 20 that is installed at the tip of the boom 12 of the excavator 10 and the tip 11a of the piston 11 of the hydraulic cylinder, and receives a hydraulic pressure from the excavator 10 to generate a rotational force;
A rotating plate 30 coupled to a motor shaft 23 of a hydraulic motor 22 incorporated in the hydraulic motor unit 20 and having a diameter larger than that of a manhole cover;
A bit means 40 provided around the lower part of the turntable 30 for crushing and excavating the road pavement surface around the manhole cover into a circle;
A manhole cover removal machine characterized by comprising.   The excavator 10 is adjusted by a water storage tank 51 mounted in front of the loading platform of the vehicle A, a water supply adjuster 52 that adjusts water supply stored in the water storage tank 51, and the water supply adjuster 52. The manhole cover removing machine according to claim 1, further comprising a water supply device (50) including a water supply hose (53) for transferring water to the manhole cover removing means (60).   The hydraulic motor unit 20 includes a cylindrical body 21 in which a hydraulic motor is incorporated, a hydraulic motor 22 in the cylindrical body 21, a motor shaft 23 of the hydraulic motor 22, and a motor shaft 23 of the hydraulic motor 22. The manhole cover removing machine according to claim 1 or 2, further comprising a bearing portion (24) containing a bearing to be supported.   The cylindrical body 21 includes a disk-shaped lid 21a fixed to the upper end by welding, and brackets 25 and 25 ′ having coupling holes 25a and 25b are fixed to both sides of the upper surface of the lid 21a, respectively. A hydraulic hose connection opening 21b is formed on one upper side surface of the body 21, and a cylindrical body flange 26 having a plurality of bolt holes 26a formed at regular intervals is radially formed on the outer peripheral edge of the lower end of the cylindrical body 21. The manhole cover removing machine according to claim 3, wherein the manhole cover removing machine is fixedly installed on the machine.   The manhole cover removing machine according to claim 3, wherein a bearing portion flange (27) having a plurality of bolt holes (27a) formed at regular intervals is fixedly installed radially at an upper end of the bearing portion (24).   The first and second rotating pins 25c and 25d are respectively connected to the coupling hole 25a while the tip of the boom 12 of the excavator 10 and the tip 11a of the piston 11 of the hydraulic cylinder are inserted between the brackets 25 and 25 '. 25b through the first end of the boom 12 and the front end 11a of the piston 11 of the hydraulic cylinder, and through the first and second rotating pins 25c and 25d, the first and second brackets 25 and 25 ' The manhole cover removing machine according to claim 4, wherein the second rotation pins (25c, 25d) are fixed.   The cylindrical body 21 and the bearing part 24 are connected to each other in a state where the bolt hole 26a of the cylindrical part flange 26 and the bolt hole 27a of the bearing part flange 27 coincide with each other, and are fastened and fixed by bolts and nuts. The manhole cover removing machine according to claim 4 or 5.   The motor shaft 23 is formed in a polygonal column shape with a lower portion protruding downward in the center of the cylindrical body 21 so as to be coupled to the rotating plate 30, and the lower portion of the motor shaft 23 is used for installing the rotating plate 30. The through hole 23a is formed in the side surface, The manhole cover removal machine of Claim 3 characterized by the above-mentioned.   The rotating disk 30 is fixedly installed in a form protruding at the center of the upper surface, and the coupling member 31 coupled to the motor shaft 23 and the upper surface to dissipate heat generated during the road pavement surface crushing work. 2. A plurality of through-holes 33 formed, and a vertical outer peripheral portion 32 in which a bit means 40 is installed at a lower end where an outer peripheral edge is bent downward and extended. Manhole cover removal machine.   The coupling member 31 has a cylindrical coupling 31c having a bolt hole 31b passing through a side surface in which a polygonal hole 31a into which the motor shaft 23 is inserted is formed, and fixes the coupling 31c to the upper surface of the turntable 30. The fixing rib 31d includes a plurality of fixing ribs 31d, and a lower surface of the fixing rib 31d whose side surfaces are radially fixed to the outer peripheral edge of the coupler 31c is fixed to the upper surface of the rotating disk 30. The manhole cover removing machine according to claim 9.   The bit means 40 is inserted into the multiple bit support frames 41 fixed to the lower surface of the vertical outer peripheral portion 32 of the turntable 30 by welding, and is inserted into the multiple bit support frames 41 and fixed with rivets. The manhole cover removing machine according to claim 1, comprising a plurality of bits (42) whose tips are bit blades (42a).   The bit support frames 41 form a set of two, and are fixed to the lower surface of the vertical outer peripheral portion 32 of the rotating disk 30 by welding while the side surfaces of the bit support frames 41 are welded to each other. The manhole cover removing machine according to claim 11, wherein the manhole cover removing machine is disposed at a constant interval between the one set and the one set.   12. The manhole cover removing machine according to claim 11, wherein three of the bit support frames 41 form one set.   A bit insertion groove 41a is formed in the bit support frame 41. On the inner surface of the bit support frame 41 in the bit insertion groove 41a, a protrusion 41b is formed along a central portion, and on one side of the protrusion 41b. Is formed with a fixed notch 41c, the outer surface of the bit 42 located at the portion inserted into the bit insertion groove 41a is formed with a concave groove 42b along the center, and the protrusion 41b is inserted into the concave groove 42b. 14. The bit 42 is fixed to the bit support frame 41 by being riveted with a rivet 42 c to a fixed notch 41 c formed in the protrusion 41 b in the state where it has been applied. The manhole cover removing machine described in item 1.

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