JP7357550B2 - Chiseling equipment and chiseling method using the same - Google Patents

Description

The present invention relates to, for example, a chisel device that chisels reinforced concrete or the like using a water jet, and a chisel construction method using the same.

Generally, in structures made of reinforced concrete, parts of the structure that have deteriorated over time are removed by chiseling (also referred to as ``scabbing'' or ``shaving''), and the reinforcing bars are repaired or new concrete is added. In some cases, pouring etc. may be carried out. Additionally, a chisel device that sprays high-pressure water (water jet) toward the surface of the structure may be used to partially remove the structure. As this type of chisel device, there are known devices that are miniaturized, such as those described in Patent Document 1 and Patent Document 2, for example. Furthermore, as in Patent Document 3, a type in which the operator holds the peeling unit is also known.

Patent No. 5511239 Japanese Patent Application Publication No. 2014-104576 Japanese Patent Application Publication No. 2003-094394

By the way, there are various types of structures that can be chiselled as described above, and the size of the space around the construction surface is not uniform. If the construction surface is located in a narrow part of the structure, the head of the chisel (the part that sprays high-pressure water) may be brought close to the construction surface, or the high-pressure water can be sprayed over a wide area of the construction surface. There were times when it was difficult to do so. Furthermore, the routes for workers to approach narrow areas are not uniform, and it is sometimes difficult to carry in and install chisel equipment.

The present invention has been made to solve such problems, and its purpose is to provide a chisel device that can be easily miniaturized and a chisel construction method using the same.

(1) In order to achieve the above object, the present invention includes a frame part and a joint part,
The frame portion is provided with a contact portion that can be contacted by an operator,
The joint part includes:
An injection part that can eject high-pressure water for chisel fishing while swinging;
a drive source for swinging the injection section;
The chipping device is further provided with a driving force transmitting section that transmits the driving force of the driving source to the injection section.
(2) Further, the present invention provides that the driving force transmission section has a crank mechanism section,
The crank mechanism section includes at least:
a drive source-side rotating section disposed relatively close to the drive source;
A link section is provided between the drive source side rotating section and the injection section and connected to the drive source side rotating section and the injection section side. The chisel device described in (1) above.
(3) The present invention also resides in the chisel device according to the above (1) or (2), characterized in that the frame portion and the joint portion are separably coupled via a fixture.
(4) The present invention also resides in a chisel construction method characterized in that the chisel is performed using the chisel device according to any one of the above (1) to (3).

(1) In order to achieve the above object, the present invention includes a frame part and a joint part,
The frame portion is provided with a contact portion that is gripped by an operator,
The joint portion is provided at a tip of the elongated frame portion on the opposite side to the side where the contact portion is provided,
The joint part includes:
An injection part that can eject high-pressure water for chisel fishing while swinging;
a drive source for swinging the injection section;
A driving force transmitting section that transmits the driving force of the driving source to the injection section ,
The direction in which the frame portion extends is the Y direction,
The direction perpendicular to the Y direction is the X direction,
When the direction perpendicular to the X direction and the Y direction is the Z direction,
The injection unit is arranged apart from the drive source in the X direction,
The plane on which the injection is performed while the injection unit swings is either an XZ plane including the X direction and the Z direction, or an XY plane including the X direction and the Y direction. It is in a chisel device that is characterized by being fixed .
(2) Further, the present invention provides that the driving force transmission section has a crank mechanism section,
The crank mechanism section includes at least:
a drive source-side rotating section disposed relatively close to the drive source;
A link section is provided between the drive source side rotating section and the injection section and connected to the drive source side rotating section and the injection section side. The chisel device described in (1) above.
(3) The present invention also resides in the chisel device according to the above (1) or (2), characterized in that the frame portion and the joint portion are separably coupled via a fixture.
(4) The present invention also resides in a chisel construction method characterized in that the chisel is performed using the chisel device according to any one of the above (1) to (3).

FIG. 1 is a perspective view showing the chisel device according to the first embodiment of the present invention as seen from the joint portion side. It is a perspective view showing the state where the chisel device of a 1st embodiment was seen from the frame part side. It is a perspective view showing the inside of a joint part concerning a chisel device of a 1st embodiment with some omissions. It is an explanatory view showing a rocking function by a crank mechanism part of a chisel device of a 1st embodiment. FIG. 2 is a perspective view showing a state in which the chisel of the first embodiment is combined with a roller mount; It is a perspective view showing the state where the chisel device of a 1st embodiment was moved to the back on a roller stand. FIG. 2 is an explanatory diagram showing the state before and after the movement of the chisel device of the first embodiment. It is an explanatory view showing a state where a joint part concerning a chisel device of a 1st embodiment is separated from a frame part. FIG. 2 is a perspective view schematically showing a modification of the chisel device according to the first embodiment. (a) is an explanatory diagram showing a state in which the chipping device according to the modified example of FIG. 9 is sent into a horizontal narrow part, and (b) is a diagram showing a state in which the chipping device according to the modified example of FIG. 9 is sent into a vertical narrow part. FIG. It is a perspective view showing the state where the chisel device concerning a 2nd embodiment of the present invention was seen from the joint part side. It is a perspective view showing the inside of a joint part concerning a chisel device of a 2nd embodiment with some omissions. It is an explanatory view showing the rocking function by the crank mechanism part of the chisel device of a 2nd embodiment.

A chisel device according to a preferred embodiment of the present invention will be described with reference to the drawings. 1 to 8 show a chisel device 10 according to a first embodiment of the present invention. This chisel device 10 includes a frame portion 11 and a joint portion 12. Of these, the frame portion 11 includes a square pipe-shaped frame body 13 and a work handle portion 14 (contact portion) fixed to one end of the frame body 13 in the longitudinal direction.

The work handle section 14 includes two handle plates 15, one handle pipe 16, and a handle grip 17 that covers each end of the handle pipe 16. Of these, each handle plate 15 is a flat plate-shaped component made of steel sheet metal and formed into a dogleg shape (also referred to as a V-shape or the like).

Further, one end portion of each handle plate 15 is fixed to the frame body 13 with its plate surface overlapping each side surface 13a of the frame body 13 from the outside. Here, as a method for fixing the handle plate 15 to the frame body 13, various general methods can be adopted. As a fixing method, for example, as shown in FIGS. 1 and 2, it is possible to employ a connection (connection) using a plurality of (here, two) bolts 15a.

The other end portions of each handle plate 15 protrude from the frame body 13 while facing each other at a predetermined distance. Further, a handle pipe 16 is spanned over the handle plate 15, and the handle pipe 16 passes through the two handle plates 15 in the thickness direction.

The handle pipe 16 is made of a round steel pipe with a perfectly circular cross section. Furthermore, the handle pipe 16 is fixed to the handle plate 15 so as to be symmetrical about (an extension of) the frame body 13. Here, as a method for fixing the handle pipe 16 to the handle plate 15, various general methods can be adopted. For example, welding can be used as a fixing method.

The handle grip 17 described above is a part that is gripped by the operator. Further, the handle grip 17 is a cylindrical component made of synthetic resin such as synthetic rubber, and has one end in the axial direction closed and the other end open. The handle grip 17 is placed over the handle pipe 16 from the open end side and fixed to the handle pipe 16 by press fitting.

Here, the operator using the chisel device 10 grasps the handle grip 17 with his fingers and performs the chisel operation with the joint portion 12 (described later) facing away from him (forward). In the following, as shown by orthogonal coordinates Q in FIG. The explanation will be given assuming that the direction perpendicular to the Y direction, the X direction, and the Y direction is the Z direction.

Next, the aforementioned joint section 12 will be explained. This joint portion 12 is of a vertical type that can spray high-pressure water (water jet) upward (or downward) in the Z direction. Further, the joint portion 12 is unitized, and as shown in FIG. 2, is connected to the frame body 13 via a plurality of (four in this case) bolts 19.

That is, the joint part 12 has a casing part 21 formed in the shape of a rectangular parallelepiped box. Further, the frame body 13 has a flange portion 18 that projects in the left-right direction (both sides in the X direction) at the distal end portion (the end portion on the opposite side from the work handle portion 14). Further, the frame body 13 is abutted against the joint portion 12, and the flange portion 18 is overlapped with one end surface (rear end surface) of the casing portion 21. Here, as the material of the casing portion 21, it is possible to employ, for example, a stainless steel plate.

Two bolts 19 per flange portion 18 are screwed from the flange portion 18 side to the casing portion 21 side, and the joint portion 12 is connected to the flange portion 18. Furthermore, by loosening the bolts 19, the joint portion 12 can be separated from the frame portion 11, as shown in FIG.

The flange portion 18 and the bolts 19 form an attachment/detachment structure portion 20 that allows the joint portion 12 to be connected and separated. Here, for connection using the bolts 19, it is possible to weld a nut (not shown) inside the casing portion 21.

As shown in FIG. 3, inside the casing portion 21 of the joint portion 12, a rectangular plate-shaped base body 22 is housed with the thickness direction facing the front-rear direction (Y direction). A motor 23 as a driving source, an injection section 24 capable of ejecting high-pressure water, and a crank mechanism section 25 as a driving force transmission mechanism section are attached to the base body 22. Furthermore, a high-pressure water introduction section 37 for guiding high-pressure water to the injection section 24 and the like are also attached to the base body 22 . These devices attached to the base body 22 are housed inside the casing portion 21.

Of these, the motor 23 has a cylindrical casing, and is mounted on one plate surface of the base body 22 (on the plate surface on the frame portion 11 side) with its axial direction extending in the front-rear direction (Y direction). It is fixed towards the target. Furthermore, the output shaft (not shown) of the motor 23 enters the through hole 26 of the base body 22 and reaches the opposite side of the base body 22. A crank portion 27 (described later) of a crank mechanism portion 25 is integrally connected to the output shaft of the motor 23 so as to prevent so-called play or loosening. Here, as the motor 23, an air motor using compressed air as a power source is employed, but piping for introducing compressed air (air piping) is not shown.

The crank mechanism section 25 is located on the opposite side (front end side) of the motor 23 with the base body 22 in between. The crank mechanism section 25 includes, in addition to the above-described crank section 27, a rod section 28, a lever section (lever section) 29, and the like.

Among these, the crank portion 27 extends substantially parallel to the plate surface of the base body 22, and rotates around one end connected to the motor 23, and rotates the other end. A crank pin portion 30 is provided on the other end side of the crank portion 27, and as the crank portion 27 rotates, the crank pin portion 30 turns.

That is, the crank portion 27 rotates as shown by an arrow B in FIG. 4 around the axis A (indicated by a dashed line) of the output shaft of the motor 23. The direction indicated by arrow B is a clockwise direction when viewed from the front to the rear (from the joint portion 12 side to the frame portion 11 side). As the crank part 27 rotates, the crank pin part 30 rotates clockwise around the axis A when viewed from the front to the rear (from the joint part 12 side to the frame part 11 side). It will turn around.

One end portion of the rod portion 28 described above is rotatably connected to the crank portion 27 via the crank pin portion 30 described above. This rod portion 28 extends substantially parallel to the plate surface of the base body 22 (the plate surface on the front end side) and toward the injection portion 24 side.

Further, the other end of the rod portion 28 reaches the lever portion 29 and is rotatably connected to a lever pin portion 31 formed at one end (tip portion) of the lever portion 29. Further, the other end (base end) of the lever portion 29 is integrally connected to the injection portion 24 so that there is no so-called play or loosening.

The injection part 24 has a cylindrical injection part main body 32 and a cylindrical nozzle part 33 having a smaller diameter than the injection part main body 32. Among these, the injection part main body 32 is provided so that its axis C is perpendicular to the plate surface of the base body 22. The injection part main body 32 is attached to the base body 22 so as to be able to rotate together with the lever part 29 described above about the axis C.

The nozzle portion 33 is integrally fixed to the outer circumferential surface of the injection portion main body 32 so that there is no so-called play or loosening. Further, the number of nozzle portions 33 is one. The nozzle portion 33 protrudes from the outer peripheral surface of the injection portion main body 32 in the radial direction of the injection portion main body 32. Further, the nozzle portion 33 has an injection port 34 on its axis that is capable of ejecting high-pressure water.

High-pressure water for chiseling is supplied to the injection section 24 via a high-pressure water introduction section 37 . The high-pressure water introducing portion 37 is arranged parallel to the motor 23 and is fixed on one plate surface of the base body 22 (on the plate surface on the frame portion 11 side). Further, the high-pressure water introduction section 37 is connected to a high-pressure water pipe 38 passed through the frame section 11.

This high-pressure water piping 38 is connected to a high-pressure water generator (not shown) prepared separately from the chisel device of this embodiment, and supplies high-pressure water sent from the high-pressure water generator (not shown) to the high-pressure water pipe 38. The water is supplied to the water introduction section 37. Here, as the high-pressure water piping 38, it is possible to employ one having appropriate flexibility. Furthermore, various common types can be employed as the high-pressure water generator (not shown).

The high-pressure water supplied to the high-pressure water introduction section 37 via the high-pressure water pipe 38 passes through the inside of the high-pressure water introduction section 37 and is supplied to the injection section 24 . Further, the high-pressure water supplied to the injection section 24 reaches the nozzle section 33 through a high-pressure water flow path formed inside the injection section main body 32, and as shown by reference numeral 34, the injection port 34 of the nozzle section 33 It is sprayed in a straight line. Here, in this embodiment, the nozzle shape inside the injection port 34 is such that the high-pressure water injected outward from the nozzle part 33 expands somewhat into a conical shape.

The injection section 24 receives the rotational force of the motor 23 via the crank mechanism section 25 described above. The rotational force of the motor 23 is converted by the crank mechanism 25 into a reciprocating motion including an X-direction component and a Z-direction component within a plane (XZ plane). Then, as the motor 23 continues to rotate, the injection section 24 performs a swinging motion as shown by an arrow D around the axis C (FIG. 4).

The swinging movement of the injection part 24 is performed within the range in which the injection port 34 of the nozzle part 33 is directed upward in FIGS. 3 and 4. In FIG. 4, the swing range (swing angle) of the injection part 24 is indicated by θ1. This swing angle θ1 can be determined by the dimensions of each part of the crank mechanism section 25.

For example, the distance (vertical distance) from the rotation center of the crank portion 27 (here, it is assumed to coincide with the axis A of the output shaft of the motor 23) to the center of the crank pin portion 30 is represented by LA. Furthermore, the distance (vertical distance) from the axis C of the injection part 24 to the center of the lever pin part 31 in the lever part 29 is represented by LB.

If the distance LA is, for example, 20 mm and the distance LB is, for example, 40 mm, the dimensional relationship can be determined so that the swing angle θ1 is about 60°. Further, the present invention is not limited to this, and if the distance LA is, for example, 25 mm and the distance LB is also 40 mm, the swing angle θ1 can be approximately 100°. In this way, by increasing the distance LA by 5 mm, the swing angle θ1 can be increased by about 40°.

Such a crank mechanism portion 25 is covered by a crank cover 36, which is shown in FIG. 3 by a two-dot chain line. The crank cover 36 is processed into the shape of a rectangular parallelepiped box, and is removably fixed to the base body 22 with a fixing device (not shown) such as a bolt. The crank cover 36 covers the crank mechanism section 25 within the casing section 21 except when disassembled for maintenance, for example. As the material of the crank cover 36, for example, an aluminum alloy plate can be used.

When the crank cover 36 is attached, the above-mentioned injection part 24 passes through a through hole (not shown) formed in the crank cover 36 and is exposed to the outside of the crank cover 36. Furthermore, the injection part 24 is also exposed from the casing part 21, and the injection part main body 32 and the nozzle part 33 are pivoted outside the casing part 21.

That is, in this embodiment, only the injection part main body 32 and the nozzle part 33 of the injection part 24 are exposed to the outside of the casing part 21 in the joint part 12. Further, the crank mechanism section 25 is protected by a double structure of the casing section 21 and the crank cover 36.

Next, an example of how the chisel 10 of this embodiment is used will be described. The lifting device 10 of this embodiment can be used in combination with a roller mount 41, as shown in FIG. This roller mount 41 is constructed by assembling three lower roller parts 43a to 43c and one upper roller part 43d to a gantry main body 42.

The three lower roller sections 43a to 43c described above are spanned over the gantry main body section 42 so as to be located on the same plane and lined up parallel to each other. The interval between the lower roller parts 43a to 43c is somewhat smaller than the length of the casing part 21 in the joint part 12 in the longitudinal direction (Y direction of the orthogonal coordinate Q).

Furthermore, above one of the lower roller sections 43a to 43c, the upper roller section 43d is arranged at a predetermined interval. A lever handle portion 44 is provided near one end in the axial direction of the upper roller portion 43d. This lever handle portion 44 has a function that allows the upper roller portion 43d to be removed from or attached to the gantry main body portion 42 by being gripped and rotated by an operator (not shown) with his or her fingers. have.

Here, in this embodiment, the upper roller section 43d is separated from the gantry main body 42 in such a manner that the entire upper roller section 43d separates from the gantry main body 42. However, the present invention is not limited to this, and for example, one end of the upper roller section 43d (the end opposite to the side where the lever handle section 44 is disposed) is connected to the gantry main body section 42 via a hinge mechanism section. The other end may be separated from the gantry main body 42 while maintaining the same state.

Two elevating stages 45 are mounted on the gantry main body 42 at a predetermined interval in the X direction of the orthogonal coordinate Q. Each elevating stage portion 45 includes a plurality of stages (in this case, two stages) of X-link portions 46, a flat elevating portion 49, a rotating handle portion 48 disposed outward with respect to the gantry main body portion 42, and the like. have. When an operator (not shown) grasps and rotates the rotary handle part 48 with his or her fingers, each elevating stage part 45 expands and contracts the X link part 46 and raises and lowers the elevating part 49. There is.

As shown in FIG. 7, such a roller mount 41 is manually fed into a narrow portion T facing a structure S to be chiselled. Moreover, when the roller mount 41 is sent into the narrow portion T, it is possible to combine the chisel device 10 first.

When assembling the chisel 10 with the roller mount 41, it is conceivable to perform the assembling work at a location of the structure S where sufficient work space can be secured. For example, a worker (not shown) operates the lever handle section 44 to detach the upper roller section 43d from the gantry main body section 42. Then, the joint portion 12 of the chisel device 10 is placed on the lower roller portion 43c of the gantry main body portion 42.

At this time, the chisel device 10 is oriented such that the axial direction of the chisel device 10 (the Y direction of the orthogonal coordinate Q in FIG. 1 etc.) is perpendicular to the axial direction of the lower roller portion 43c. Furthermore, the entire chisel 10 is pushed in the axial direction (direction perpendicular to the axial direction of the lower roller portion 43c) by the operator. Then, the chisel device 10 applies weight to the upper roller section 43d, rotates the lower roller section 43c, and is sent toward the lower roller section 43b in the middle.

Furthermore, the tip of the joint part 12 reaches the lower roller part 43b in the middle and advances to the back, and with the tip of the frame part 11 reaching the lower roller part 43c in the front, the chipping device 10 is temporarily turned off. be stopped. Then, the operator assembles the upper roller section 43d to the gantry main body section 42, operates the lever handle section 44, and fixes the upper roller section 43d to the gantry main body section 42.

By fixing the upper roller section 43d, the frame section 11 is sandwiched between the upper roller section 43d and the lower roller section 43c in front (FIG. 5). In this state, when the operator grasps the handle grip 17 of the work handle portion 14, the operator is ready to perform the chisel operation.

Here, although not shown, if the operator is in a situation where the operator can operate the rotary handle part 48 of the lifting stage part 45 within the narrow part T, the operator can raise the lifting part 49 and bring it into contact with the structure S. , the roller stand 41 can be firmly positioned. Furthermore, even if the operator cannot operate the rotary handle part 48 within the narrow part T, by raising the elevating part 49 to a certain extent in front of the narrow part T, the reaction that occurs during chipping work can be avoided. Accordingly, it is possible to suppress displacement of the roller mount 41 (and chisel device 10) as much as possible.

Further, when the operator gradually pushes the lifting device 10 in the horizontal direction (in the Y direction, which is the longitudinal direction here) while holding the handle grip 17, the injection part 24 moves to the back side of the narrow portion T. As shown in FIGS. 6 and 7, the limit for the movement of the injection part 24 toward the back side is between the rear end of the joint part 12 (the part connected to the frame part 11) and the innermost part. This is until the state of contact with the lower roller part 43a (the state in which the joint part 12 is placed) can be maintained.

However, although not shown in the drawings, it is also conceivable that the joint portion 12 is sent too far into the back and the joint portion 12 comes off (separates from) the innermost lower roller portion 43a. In such a case, the operator presses down the handle grip 17 side, and while maintaining the mutual contact between the lower roller part 43c and upper roller part 43d, which are closest to you, and the frame part 11, the narrow part T is The side of the joint part 12 is raised somewhat within the space. Then, by the operator further pulling the lifting device 10 toward the operator, the joint portion 12 can be returned to the innermost lower roller portion 43a.

Then, the operator can move the chisel device 10 back and forth as shown by arrow E in FIG. 7 to move the joint portion 12 forward or backward on the roller mount 41. Further, the operator moves the chisel device 10 in the left-right direction (in this case, in the lateral direction By moving (shaking) in the direction), the injection section 24 is moved in the left-right direction of the narrow portion T.

Here, FIGS. 1 to 7 show a state in which the handle plate 15 protrudes below the frame portion 11 and the injection port 34 of the nozzle portion 33 is directed upward. However, although not shown in the drawings, by turning the chisel 10 upside down and making the handle plate 15 protrude above the frame part 11, the injection port 34 of the nozzle part 33 can be directed downward. can. Then, it becomes possible to perform construction on the lower surface of the narrow portion T.

According to the chisel device 10 of the present embodiment and the chisel construction method using the same as described above (hereinafter referred to as "chisps device 10 etc."), the swinging motion of the nozzle section 33 This is done via a crank mechanism section 25 having 29. Therefore, high pressure can be applied in the Z direction while arranging mechanical parts in the Can spray water. Therefore, it is easy to make the chisel device 10 and the joint portion 12 thin and small in the Z direction.

Furthermore, since the driving force of the motor 23 is transmitted to the injection part 24 via the crank mechanism part 25, a torque increasing part using a lever can be formed in the joint part 12, and torque can be easily increased in a small space. can be done. In addition, good movability can be ensured even while receiving reaction force from the jet of high-pressure water.

Furthermore, since the crank mechanism part 25 is provided, it is possible to determine the swing angle θ1 of the nozzle part 33 based on the relationship between the distance LA related to the crank part 27 and the distance LB related to the lever pin part 31. Setting the angle θ1 is easy.

For example, as described above, if the distance LA related to the crank portion 27 is 20 mm and the distance LB related to the lever pin portion 31 is 40 mm, the motor torque will be multiplied by 1.6. Furthermore, if the distance LA related to the crank portion 27 is 25 mm and the distance LB related to the lever pin portion 31 is 40 mm, the motor torque will be doubled.

Further, for example, as described above, the distance LA related to the crank portion 27 may be 20 mm, the distance LB related to the lever pin portion 31 may be 40 mm, and the swing angle θ1 of the nozzle portion 33 may be approximately 60°. Further, the distance LA related to the crank portion 27 may be 25 mm, the distance LB related to the lever pin portion 31 may be 40 mm, and the swing angle θ1 of the nozzle portion 33 may be approximately 100°.

Furthermore, according to the chisel device 10 and the like of the present embodiment, the nozzle portion 33 performs a swinging motion, so that the jet stream moves in the rotational direction (here, around the Y axis) and the jet stream moves in the linear direction (here, the X direction). A jet stream can be formed. The jets in these directions make it possible to spray high-pressure water onto the construction surface from a wider range of angles in the narrow portion T.

Further, according to the chisel device 10 and the like of this embodiment, the unitized joint portion 12 is fixed to the frame portion 11 via the attachment/detachment structure portion 20. The joint part 12 can be removed from the frame part 11 by loosening the bolts 19 of the detachable structure part 20.

For this reason, the chisel device 10 can be made into a split structure, and when not in use, the chisel device 10 can be stored compactly and in a space-saving manner. In addition, the chisel 10 can be carried in a compact manner in a divided state (including during transport and transportation), and its portability is improved. Even if the work space at the construction site is narrow, it can be easily transported to the construction site.

Furthermore, the attachment/detachment structure 20 has a simple configuration in which the joint portion 12 can be coupled to the frame portion 11 by screwing in the bolt 19. Therefore, the chisel device 10 can be assembled easily and quickly at the construction site. Normally, the conditions at a construction site are not constant, and unexpected situations can occur, so being able to assemble things easily and quickly means that they can be completed on time. This is important in proceeding with construction.

Furthermore, according to the chisel device 10 and the like of the present embodiment, the motor 23 that is the drive source, the crank mechanism section 25 that is the drive force transmission mechanism section, and the injection section 24 are arranged collectively in the joint section 12. There is. Therefore, maintenance work on the movable parts can be concentrated on the joint part 12. The maintenance work can be performed more efficiently than when the objects of the maintenance work (here, the motor 23, the crank mechanism section 25, the injection section 24, etc.) are disposed over a wide area.

Furthermore, as described above, since the joint part 12 can be separated from the frame part 11, for example, the high-pressure water pipe 38 and the air pipe (not shown) can be removed from the joint part 12, and only the joint part 12 can be separated from the frame part 11. It becomes possible to take the device to a maintenance workshop for maintenance.

Further, according to the chisel device 10 and the like of this embodiment, the handle plate 15 of the work handle portion 14 is coupled (connected) to the frame body 13 by the bolt 15a. In this way, by using the bolts 15a to connect (connect) the handle plate 15 to the frame body 13, the work handle portion 14 can be easily separated from the frame body 13 and assembled to the frame body 13. becomes possible.

Furthermore, by making the work handle section 14 separable from the frame body 13, the frame section 11 can also be disassembled, making it possible to further improve the portability of the chisel device 10. Here, if it is not necessary to make the working handle part 14 detachable, the handle plate 15 may be welded to the frame body 13.

Although the chisel device 10 and the like according to the first embodiment of the present invention have been described above, the present invention can be modified in various ways without departing from the scope of the invention. For example, if sufficient rigidity can be ensured, aluminum alloy can be used as the material for each part. By doing so, it is possible to reduce the weight of the lifting device 10.

Further, the chisel device 10 is not limited to being used in combination with the roller mount 41, and the chisel device 10 can be directly inserted into the narrow portion T without using the roller mount 41 to perform the chisel operation.

Further, for example, as shown in a simplified manner in FIG. 9, it is also possible to attach casters 51 to the joint portion 12. The roller mount 41 may not be installed in the narrow part T, but the chisel 10a may be directly inserted into the narrow part T, as shown in FIG. 10(a). In this case, the joint portion 12 is inserted into the narrow portion T so that the wheels 52 of the casters 51 are in contact with the bottom surface of the narrow portion T. Then, the operator moves the chisel device 10a forward and backward as shown by arrow F to move the injection section 24.

Further, as the casters 51, it is possible to adopt a type that allows the wheels 52 to rotate horizontally and turn. In this case, the operator moves (swings) the chisel device 10a in the left-right direction (in the X direction, which is the transverse direction), and moves the injection part 24 in the left-right direction of the narrow portion T. This can be done easily with relatively light force.

Note that when the casters 51 are provided on the lifting device 10a in this way, the casters 51 can be used not only in the horizontal direction (X direction and Y direction) as shown in FIG. 10(a), but also in the vertical direction as shown in FIG. 10(b). The lifting device 10a can also be sent in the direction (here, the Z direction). In the example shown in FIG. 10(b), there is a narrow portion U that extends vertically (in the Z direction here), and the operator holds the chisel 10a in a suspended state and moves the wheels 52 of the casters 51. The distal end side of the joint portion 12 is entered into the narrow portion U while rolling it along one wall surface of the narrow portion U.

According to the chisel device 10a having the casters 51 in this way, it is easier to handle and the operability is improved compared to the case where the roller mount 41 is used (FIGS. 5 to 7). In addition, it becomes possible to easily and efficiently perform chiseling work on a wider variety of structures.

In addition to the above-described usage, it is possible to perform fishing in various ways. For example, since the joint portion 12 is removable, it is possible to mount the joint portion 12 not only on the frame portion 11 but also on other devices and devices. More specifically, although not shown in the drawings, for example, the joint part 12 is attached to a remote-controlled moving device capable of running using an endless belt, and high-pressure water is supplied to create a self-propelled moving device. It is possible to construct a chisel device.

Further, although not shown in the drawings, it is conceivable to provide a head section movable within a plane by motor drive on a pedestal (XY stage) made of, for example, an aluminum frame. By connecting the joint part 12 to this head part, it is possible to create a chisel device of automatic positioning type within the XY plane.

Next, a second embodiment of the present invention will be described based on FIGS. 11 to 13. Note that items similar to those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The chisel device 60 according to the second embodiment is different from the chisel device 10 of the first embodiment in the swinging direction of the injection part 74.

That is, in the chisel device 10 and the like according to the first embodiment, the swinging direction of the injection section 24 is the vertical direction, and the injection section 24 swings within the XZ plane in the orthogonal coordinate Q (Figs. 4 etc.). On the other hand, in the chisel device 60 of the second embodiment and the chisel construction method using the same, the swing direction of the injection part 74 is the horizontal direction, and the injection part 74 swings within the XY plane in the orthogonal coordinate Q. It has become.

Specifically, as shown in FIGS. 11 to 13, the joint portion 62 is connected to the distal end side of the frame portion 11 via the attachment/detachment structure portion 20. As shown in FIGS. As shown in FIG. 12, inside the casing part 71 of the joint part 62, a rectangular plate-shaped base body 72 is provided with the thickness direction facing the up-down direction (Z direction). Here, as the material of the casing portion 71, it is possible to employ, for example, a stainless steel plate.

Furthermore, this base body 72 includes a motor 73 as a driving source, an injection section 74 capable of injecting high-pressure water, a crank mechanism section 75 as a driving force transmission mechanism section, and a crank mechanism section 75 that transmits the rotational force of the motor 73. A rack and pinion mechanism section 91 is attached that transmits the information to the vehicle. Furthermore, a high-pressure water introduction section 87 for guiding high-pressure water to the injection section 24 is also attached to the base body 72 . These devices attached to the base body 72 are housed inside the casing portion 71.

Among these, the motor 23 has a cylindrical casing, and is placed on one plate surface of the base body 72 (on the plate surface facing downward in the Z direction in the figure), with the axial direction extending in the front-rear direction ( (Y direction). Furthermore, many parts of the motor 73 protrude outward from the end surface of the base body 72. The output shaft (not shown) of the motor 73 is integrally connected to the rack section 92 of the rack and pinion mechanism section 91 so that there is no so-called play or loosening.

The rack portion 92 faces a window hole 94 formed in the base body 72 and can be visually recognized from the opposite side of the base body 72 through the window hole 94. The teeth of a pinion portion 93 mesh with the rack portion 92 . Furthermore, the rotation axis (not shown) of the pinion portion 93 is oriented in the thickness direction of the base body 72, and is oriented toward the opposite plate surface of the base body 72 (the plate surface facing upward in the Z direction in the figure). It stands out against the others.

A crank portion 77 (described later) of a crank mechanism portion 75 is integrally connected to a rotating shaft (not shown) of the pinion portion 93 so as to prevent so-called play or loosening. The crank mechanism section 75 is located on the opposite side (front end side) of the motor 73 with the base body 72 in between. The crank mechanism section 75 includes, in addition to the above-described crank section 77, a rod section 78, a lever section (lever section, not shown), and the like.

Among these, the crank portion 77 extends substantially parallel to the plate surface of the base body 72, and rotates the other end portion around one end connected to the pinion portion 93 as a rotation center. A crank pin portion 80 is provided on the other end side of the crank portion 77, and as the crank portion 77 rotates, the crank pin portion 80 turns.

That is, as shown in FIG. 12, the crank part 77 rotates counterclockwise when viewed from above, as shown by arrow H, centering on the axis G of the output shaft of the pinion part 93. Rotate. As the crank portion 77 rotates, the crank pin portion 80 rotates clockwise as indicated by an arrow H around the axis G of the output shaft of the pinion portion 93.

One end portion of a rod portion 78 is rotatably connected to the other end side of the crank portion 77 via the above-described crank pin portion 80 . This rod portion 78 extends substantially parallel to the plate surface (upper plate surface) of the base body 72 and toward the injection portion 74 side.

Further, the other end of the rod portion 78 reaches a lever portion (not shown) disposed inside the injection portion 74, and a lever pin portion (not shown) formed at one end (tip portion) of the lever portion. Rotatably connected. Further, the other end (base end) of the lever part (not shown) is coaxially and integrally connected to the injection part 74 so that there is no so-called play or loosening.

The injection section 24 has an injection section main body 82 that is formed to look like a perfect circular disc when viewed from above in the direction of the rotation axis. This injection part main body 82 has two recessed nozzle parts 83 at an interval of approximately 180° near the outer periphery. Among these, the injection part main body 82 is provided so that its axis I is perpendicular to the plate surface of the base body 72. The injection part main body 82 is attached to the base body 72 so as to be able to rotate together with the above-mentioned lever part (not shown) about the axis I.

In the nozzle portion 83, an injection port 84 capable of ejecting high-pressure water is opened. These injection ports 84 are oriented in a direction inclined at a predetermined angle with respect to the axis I of the injection section main body 82.

High-pressure water for chipping is supplied to the injection section 74 via a high-pressure water introduction section 87 . The high-pressure water introduction part 87 is fixed on one plate surface (on the lower surface) of the base body 72. Further, the high-pressure water introduction section 87 is connected to a high-pressure water pipe 88 passed through the frame section 11.

This high-pressure water piping 88 is connected to a high-pressure water generator (not shown) as in the first embodiment described above, and supplies high-pressure water sent from the high-pressure water generator (not shown) to a high-pressure water inlet. Supply to 87. Here, as the high-pressure water pipe 88, it is possible to employ one having appropriate flexibility. Furthermore, various common types can be employed as the high-pressure water generator (not shown).

The high-pressure water supplied to the high-pressure water introduction section 87 via the high-pressure water pipe 88 passes through the inside of the high-pressure water introduction section 87 and is supplied to both the injection sections 74 . Furthermore, the high-pressure water supplied to the injection part 74 passes through the inside of the injection part main body 82 and reaches the nozzle part 83, and as shown by reference numeral 85 in FIG. is injected into.

Here, in this embodiment, the nozzle shape inside the injection port 84 is such that the high-pressure water injected outward from the nozzle portion 83 expands somewhat into a conical shape. Further, the high-pressure water 85 is ejected from both injection ports 84 in opposite directions and obliquely outward.

The injection section 74 receives the rotational force of the motor 73 via the rack and pinion mechanism section 91 and the crank mechanism section 75 described above. The rotational force of the motor 73 passes through the rack and pinion mechanism 91 and is converted by the crank mechanism 75 into reciprocating motion including an X-direction component and a Y-direction component within a plane (XY plane). Then, as the motor 73 continues to rotate, the injection section 74 performs a swinging motion as shown by an arrow K around the axis I.

The swinging movement of the injection part 74 is performed within the range in which the injection port 84 of the nozzle part 83 is directed upward in FIGS. 11 to 13. In FIG. 13, the swing range (swing angle) of the injection part 74 is indicated by θ2. This swing angle θ2 can be determined by the dimensions of each part of the crank mechanism section 75.

For example, the distance (horizontal distance) from the rotation center of the crank portion 77 (here, it is assumed to coincide with the axis G of the rotation shaft of the pinion portion 93) to the center of the crank pin portion 80 is expressed as LC. Furthermore, the distance (horizontal distance) from the axis I of the injection part 74 to the center of each injection port 84 is represented by LD.

When the distance LC is, for example, 30 mm and the distance LD is, for example, 35 mm, the dimensional relationship can be determined so that the swing angle θ2 is about 120°. Furthermore, the present invention is not limited to this, and if the distance LC is, for example, 32.5 mm and the distance LD is also 35 mm, the swing angle θ2 can be approximately 140°. In this way, by increasing the distance LC by 2.5 mm, the swing angle θ2 can be increased by about 20 degrees.

Such a crank mechanism section 75 is covered by a crank cover 86, which is shown in FIG. 12 by a two-dot chain line. The crank cover 86 is processed into a rectangular parallelepiped box shape, and is removably fixed to the base body 72 with a fixing device (not shown) such as a bolt. The crank cover 86 covers the crank mechanism section 75 within the casing section 71 except when disassembling it for maintenance or the like. As the material of the crank cover 86, for example, an aluminum alloy plate can be used.

When the crank cover 86 is attached, the upper surface of the injection section main body 82 passes through a through hole (not shown) formed in the crank cover 86 and is exposed to the outside of the crank cover 86. A protective disk 96 is integrally connected to the front side of the injection part main body 82 via a fixing member such as a bolt to prevent so-called play or loosening.

Furthermore, each of the above-mentioned injection ports 84 can be visually recognized through a through hole (not shown) of the protective disk 96, as shown in FIG. The protective disc 96 is disposed along the outer surface of the casing part 71, and the protective disc 96 is horizontally oscillated integrally with the injection part main body 82 on the outside of the casing part 71. It is supposed to be done.

That is, in this embodiment, only the protective disk 96 of the joint portion 62 is exposed to the outside of the casing portion 71. Further, the crank mechanism section 75 is protected by a double structure of the casing section 71 and the crank cover 86.

Like the chisel device 10 and the like of the first embodiment, the chisel device 60 of the second embodiment and the chisel construction method using the same can also be made smaller and have higher torque. And it is possible to have the same effect of the invention as the chisel device 10 etc. of 1st Embodiment. Furthermore, the chisel device 60 of the second embodiment can also be used in combination with the roller mount 41. Further, similarly to the chisel device 10 of the first embodiment, casters 51 can be attached and used.

10, 10a, 60 Chisling device 11 Frame portion 12, 62 Joint portion 14 Work handle portion (contact portion)
19 Bolt (fixing tool)
20 Detachable structure 23, 73 Motor (drive source)
24, 74 Injection part 25, 75 Crank mechanism part 27, 77 Crank part (drive source side rotating part)
28, 78 Rod part (link part)
29 Lever part 41 Roller frame 51 Caster

Claims (4)

Comprising a frame part and a joint part,
The frame portion is provided with a contact portion that is gripped by an operator,
The joint portion is provided at a tip of the elongated frame portion on the opposite side to the side where the contact portion is provided,
The joint part includes:
An injection part that can eject high-pressure water for chisel fishing while swinging;
a drive source for swinging the injection section;
A driving force transmitting section that transmits the driving force of the driving source to the injection section ,
The direction in which the frame portion extends is the Y direction,
The direction perpendicular to the Y direction is the X direction,
When the direction perpendicular to the X direction and the Y direction is the Z direction,
The injection unit is arranged apart from the drive source in the X direction,
The plane on which the injection is performed while the injection unit swings is either an XZ plane including the X direction and the Z direction, or an XY plane including the X direction and the Y direction. A chisel device characterized by being fixed . The driving force transmission section has a crank mechanism section,
The crank mechanism section includes at least:
a drive source-side rotating section disposed relatively close to the drive source;
A link section is provided between the drive source side rotating section and the injection section and connected to the drive source side rotating section and the injection section side. The chisel device according to claim 1. The chisel device according to claim 1 or 2, wherein the frame portion and the joint portion are separably coupled via a fixture. A chisel construction method characterized by performing chisel using the chisel device according to any one of claims 1 to 3.