JP5635458B2 - Suspension jig for shaft inner wall inspection device - Google Patents

Description

  The present invention relates to a hanging jig for a shaft inner wall investigation device, and in particular for suspending a shaft inner wall investigation device used for investigating a deformation state, corrosion state, etc. of a shaft such as a drainage well mainly due to aging. The present invention relates to a hanging jig.

  In a place where a landslide is likely to occur, a water collection well 500 as shown in FIG. 1 may be provided to collect groundwater and flow it to a river or the like. For example, a shaft 501 having a diameter of 3 to 4 m and a depth of 20 to 60 m is provided on a slope where a landslide is likely to occur. A plurality of water collecting pipes 502 for collecting water are connected to the shaft 501 and one drain pipe 503 for flowing the collected water to a river or the like. A broken line 504 in FIG. 1 indicates a slip surface. The shaft 501 is constructed by connecting a liner plate 510 as shown in FIG. 2 in the circumferential direction and the vertical direction, for example.

  In a shaft constructed with this liner plate shaft or other metal member, it may be necessary to investigate the deformation and corrosion status of the shaft that has been built since the construction. In addition, it may be necessary to investigate the deformation status of reinforced concrete shafts such as segments.

  As a method for investigating the inside of this type of shaft, there is a method in which a survey device is suspended in the shaft and the state of the inner wall is acquired by this survey device. As a jig or apparatus for suspending such an investigation apparatus in a vertical shaft, for example, those disclosed in Patent Documents 1 to 5 are known.

Japanese Utility Model Publication No. 4-96011 JP 2000-2531 A Japanese Patent Laid-Open No. 10-300461 Japanese Utility Model Publication No. 4-78507 JP 2003-5093 A

  However, the jigs and devices disclosed in Patent Documents 1 to 5 are for suspending the investigation device in the shaft after removing the canopy installed at the upper end of the shaft and removing the canopy when in use. There is a need. Generally, the weight of the canopy exceeds 300 kg, and it is necessary to use a heavy machine in order to remove or re-install the canopy.

  Moreover, when hanging an investigation apparatus in a shaft using the jig | tool and apparatus disclosed by the said patent documents 1-5, in order to install a hanging jig stably, a hanging jig is supported. The base needs to be enlarged according to the length of the hanging jig.

  As described above, even if the surveying apparatus itself is downsized, the base supporting the canopy and the hanging jig becomes heavy, so that there is a problem that the shaft cannot be surveyed unless a heavy machine is used. In order to carry heavy machinery to the place where the vertical shaft is installed, it is necessary to secure a delivery route to the vertical shaft, but the location where the vertical shaft is installed is often in a mountainous area, It takes time and money.

  The present invention has been made in view of such problems of the prior art, and is a shaft that can suspend an investigation device in a shaft without removing a canopy installed in the shaft with a lightweight and inexpensive configuration. An object of the present invention is to provide a hanging jig for an inner wall inspection device.

  The invention of claim 1 that solves the above-mentioned problem is a hanging jig for suspending a shaft inner wall surveying device for surveying the inner wall of a shaft in the shaft, and the outer periphery of the canopy covering the opening at the upper end of the shaft or A first guide member that guides, at the tip of the eaves portion, an attachment portion that can be attached to the upper end portion of the shaft, a eaves portion extending from the attachment portion, and a linear body having one end connected to the shaft inner wall investigation device And the eaves portion is configured to be inclined obliquely downward through an elevator port formed in the canopy when the attachment portion is attached to an outer peripheral portion of the canopy or an upper end portion of the shaft. It is the hanging jig of the shaft inner wall investigation apparatus characterized by having.

  According to a second aspect of the present invention, in the hanging jig of the shaft inner wall investigation device according to the first aspect, the attachment portion includes an engaging portion that can be engaged with an outer peripheral portion of the canopy or an upper end portion of the shaft. It is characterized by.

  According to a third aspect of the present invention, in the hanging jig of the shaft inner wall investigation device according to the first or second aspect, the brim portion includes a plurality of members coupled in the longitudinal direction of the brim portion.

  According to a fourth aspect of the present invention, in the hanging jig of the shaft inner wall investigation device according to any one of the first to third aspects, the linear member is guided between the first guide member and the mounting portion. A second guide member is further provided.

  According to a fifth aspect of the present invention, in the hanging jig of the shaft inner wall investigation device according to the fourth aspect, the second guide member is the linear line between the first guide member and the second guide member. The axis of the body and the axis from the second guide member to the other end of the linear member are configured to be shifted.

  According to a sixth aspect of the present invention, in the hanging jig of the shaft inner wall investigation device according to the fourth or fifth aspect, the brim portion is bent at a position where the second guide member is provided.

  A seventh aspect of the present invention is the suspension jig for the shaft inner wall survey device according to any one of the first to sixth aspects, wherein the attachment portion extends in a horizontal direction and contacts a top surface of an outer peripheral portion of the canopy. It is characterized by having.

  According to the present invention, the hook portion of the suspension jig can be inserted obliquely downward into the vertical shaft from the elevator opening of the canopy, and the attachment portion of the suspension jig can be attached to the outer periphery of the canopy or the upper end portion of the vertical shaft. . Thereby, a shaft inner wall investigation apparatus can be raised / lowered in a shaft via a linear body. As described above, according to the present invention, the investigation device can be suspended in the shaft without removing the canopy installed in the shaft with a light and inexpensive configuration.

It is a figure for demonstrating the installation condition of a catchment well. It is a perspective view which shows the liner plate used for a shaft. It is typical sectional drawing which shows the state which has suspended the shaft inner wall investigation apparatus in the shaft using the hanging jig which concerns on one Example of this invention. It is a top view which shows the canopy which covers opening of the upper end part of a shaft. It is the VV sectional view taken on the line of FIG. It is a figure which shows typically the hanging jig | tool of FIG. It is a front view which shows the 1st member of the hanging jig | tool of FIG. It is the figure seen from the VIII direction of FIG. It is a front view which shows the 2nd member of the hanging jig | tool of FIG. It is the figure seen from the X direction of FIG. It is the figure seen from the XI direction of FIG. It is a front view which shows the 3rd member of the hanging jig | tool of FIG. It is the figure seen from the XIII direction of FIG. It is a side view of FIG. It is the elements on larger scale which show the state by which the frame ring was inserted in the 1st L-shaped flange of the 3rd member of FIG. It is a figure which shows the example which fixes an attaching part using the 2nd L-shaped flange of the 3rd member of FIG. It is a figure which shows typically the hanging jig | tool which concerns on the other Example of this invention. It is a figure which shows typically the hanging jig | tool which concerns on the further another Example of this invention. It is a perspective view which shows the guide member used for the hanging jig | tool which concerns on the further another Example of this invention. It is a perspective view which shows the guide member used for the hanging jig | tool which concerns on the further another Example of this invention.

  Hereinafter, an embodiment of a hanging jig of a shaft inner wall investigation device according to the present invention will be described with reference to FIGS. 1 to 20. 1 to 20, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  First, the shaft which suspends a shaft inner wall investigation apparatus using the suspension jig | tool which concerns on this invention is demonstrated. FIG. 1 is a diagram for explaining an installation situation of a water collection well 500 including a vertical shaft 501. As shown in FIG. 1, the water collection well 500 is provided to collect groundwater in a place where landslides are likely to occur and flow it to a river or the like to suppress the landslide. The drainage well 500 includes a shaft 501, a plurality of water collecting pipes 502 connected to the shaft 501, and a single drain pipe 503 connected to the shaft 501.

  The shaft 501 is a cylindrical structure constructed by connecting arc-shaped liner plates 510 as shown in FIG. 2 in the circumferential direction and the vertical direction. Although the size of the shaft 501 is not specifically limited, For example, the diameter is 3-4 m and the depth is 20-60 m.

  As shown in FIG. 2, the liner plate 510 has flanges 510b formed by bending steel plates at both ends in the corrugated direction of the arc-shaped corrugated steel plate portion 510a, and is separately provided at both ends in the direction orthogonal to the corrugated direction. It has a structure having a flange 510c in which an end plate of the member is fixed by welding, and the surface is galvanized.

  The flanges 510c in the circumferential direction (direction orthogonal to the corrugation direction) of the plurality of liner plates 510 are bolted together to form a ring, and the flanges 510b of the liner plates 510 adjacent to each other are bolted together, A cylindrical shaft 501 is constructed. In general, after assembling the top of the shaft (for the first 1 to 3 rings), backing and fixing the surrounding area, the drilling and assembly are repeated, and the liner plate is added to the bottom. A shaft 501 is constructed.

  In the shaft 501 constructed by such a liner plate, it may be necessary to investigate the deformation state, the corrosion state, etc. of the shaft 501 that has been built for 20 to 30 years after construction, for example. . In such a case, the shaft inner wall investigation device is suspended in the shaft 501 using the suspension jig according to the present invention, and the inner wall of the shaft 501 is investigated.

  FIG. 3 is a schematic cross-sectional view showing a state in which the shaft inner wall survey device 1 is suspended in the shaft 501 by using the suspension jig 10 according to the first embodiment of the present invention. As shown in FIG. 3, the shaft inner wall survey device 1 is suspended in the shaft 501 using a suspension jig 10 fixed to the outer periphery of a canopy 520 that covers the opening at the upper end of the shaft 501. The shaft inner wall inspection device 1 is connected to a wire rope (wire body) 14 extending from a winch 12 provided in the suspension jig 10, and moves up and down in the shaft 501 by driving the winch 12. . A ladder 505 is provided spirally along the inner wall 501a of the shaft 501.

  4 is a plan view of the canopy 520, and FIG. 5 is a cross-sectional view taken along the line V-V in FIG. The canopy 520 is installed to cover the opening at the upper end of the shaft 501 in order to prevent a fall accident or the like, and has a shape corresponding to the shaft 501. As shown in FIG. 4, the canopy 520 in this embodiment includes an annular frame ring 521 provided on the outer peripheral portion, a plurality of beam members 522 attached to the frame ring 521, and the frame ring 521 and the beam members 522. It has a substantially disk-shaped expanded metal 523 attached on top and a door 524 attached to the beam member 522 so as to be openable and closable. As shown in FIG. 5, the canopy 520 is placed on the upper end of the liner plate 510 of the shaft 501.

  The door 524 of the canopy 520 can be opened and closed by a handle 524a, and when the door 524 is opened, an elevator opening used when an operator enters the shaft 501 is formed. The worker can enter the shaft 501 from the lift using the ladder 505.

  FIG. 6 is a view schematically showing the hanging jig 10. As shown in FIG. 6, the hanging jig 10 includes a winch 12 that winds the wire rope 14, an attachment portion 16 that can be attached to the outer peripheral portion of the canopy 520, a flange portion 18 that extends from the attachment portion 16, and a flange portion 18. The first guide member 20 provided at the tip of the first guide member 20 and the second guide member 22 provided between the first guide member 20 and the winch 12 are provided.

  The 1st guide member 20 and the 2nd guide member 22 guide the wire rope 14 connected to the shaft inner wall investigation apparatus 1, and in this example, the 1st guide member 20 and the 2nd guide member 20 A pulley is used as the guide member 22. As shown in FIG. 6, the wire rope 14 extending in the vertical direction from the shaft inner wall survey device 1 is guided by the upper surface of the pulley of the first guide member 20 provided at the distal end of the flange portion 18, and the second guide member 22 is guided by the lower surface of the pulley and reaches the winch 12. As described above, by guiding the wire rope 14 by the two guide members 20 and 22, the blur of the wire rope 14 from the winch 12 to the shaft inner wall inspection device 1 is reduced.

  As described above, in this embodiment, the extending direction axis of the wire rope 14 between the first guide member 20 and the second guide member 22, and the wire extending from the second guide member 22 to the winch 12. The rope 14 is configured to deviate from the extending direction axis, and the wire rope 14 is reliably guided by the first guide member 20 and the second guide member 22.

  As shown in FIG. 6, the hanging jig 10 in this embodiment includes three members 110, 120, and 130 that are coupled in the longitudinal direction of the flange portion 18, and these three members 110, 120, 130 can be divided. Thus, since the hanging jig 10 in the present embodiment can be divided into the three members 110, 120, and 130, it is easy to carry. Therefore, it becomes very easy to investigate the inner wall of a shaft in a mountainous area where heavy machinery cannot enter.

  7 is a front view showing the first member 110, and FIG. 8 is a view seen from the direction VIII of FIG. As shown in FIG. 7, the first member 110 includes a quadrangular columnar shaft portion 111 that constitutes a part of the flange portion 18, and a flange 112 provided at one end of the shaft portion 111. As shown in FIG. 8, the flange 112 has four through holes 112a.

  9 is a front view showing the second member 120, FIG. 10 is a view seen from the X direction of FIG. 9, and FIG. 11 is a view seen from the XI direction of FIG. As shown in FIG. 9, the second member 120 includes a quadrangular columnar shaft portion 121 that constitutes a part of the flange portion 18, a flange 122 provided at one end of the shaft portion 121, and the other end of the shaft portion 121. And a flange 123 provided. As shown in FIG. 10, four through holes 122 a are formed in the flange 122. Further, as shown in FIG. 11, the flange 123 has four through holes 123a.

  Bolts (not shown) are inserted into the through holes 112a of the flange 112 of the first member 110 and the through holes 122a of the flange 122 of the second member 120 described above, and nuts (not shown) are fastened to these bolts. Thus, the first member 110 and the second member 120 can be connected.

  12 is a front view showing the third member 130, FIG. 13 is a view seen from the XIII direction of FIG. 12, and FIG. 14 is a side view of FIG. As shown in FIG. 12, the third member 130 includes a rectangular columnar shaft portion 131 that constitutes a part of the flange portion 18, a flange 132 provided at one end of the shaft portion 131, and the other end of the shaft portion 131. A mounting portion 16 provided and a winch base 133 provided on the top of the mounting portion 16 are provided. As shown in FIG. 13, four through holes 132 a are formed in the flange 132.

  Bolts (not shown) are inserted into the through holes 123a of the flange 123 of the second member 120 and the through holes 132a of the flange 132 of the third member 130, and nuts (not shown) are fastened to these bolts. Thus, the second member 120 and the third member 130 can be coupled.

  As shown in FIGS. 12 and 14, the attachment portion 16 includes a substantially trapezoidal columnar base portion 134, a first L-shaped flange 135 provided at the lower end of the base portion 134, and second portions attached to both sides of the base portion 134. L-shaped flange 136.

  The first L-shaped flange 135 has a vertical portion 135 a extending in the vertical direction and a horizontal portion 135 b extending in the horizontal direction, and the vertical portion 135 a is fixed to the base portion 134. As shown in FIG. 12, a gap G is formed between the upper surface of the horizontal portion 135 b and the lower surface of the base portion 134. As shown in FIG. 15, a frame ring 521 on the outer periphery of the canopy 520 can be inserted into the gap G. When the frame ring 521 is inserted, the first L-shaped flange 135 The horizontal portion 135b engages with the frame ring 521, and the attachment portion 16 is fixed to the outer peripheral portion of the canopy 520. Thus, the first L-shaped flange 135 in this embodiment functions as an engaging portion that can engage with the frame ring 521 of the canopy 520.

  The second L-shaped flange 136 has a vertical portion 136 a extending in the vertical direction and a horizontal portion 136 b extending in the horizontal direction, and the vertical portion 136 a is fixed to the base portion 134. The lower surface of the horizontal portion 136b is in contact with the outer peripheral portion (frame ring 521) of the canopy 520. When the fixing of the attaching portion 16 by the engagement of the first L-shaped flange 135 is not sufficient, the fixing of the attaching portion 16 can be reinforced by the second L-shaped flange 136. That is, as shown in FIG. 16, the mounting portion 16 is fixed to the outer peripheral portion of the canopy 520 by sandwiching the horizontal portion 136b of the second L-shaped flange 136 and the frame ring 521 of the canopy 520 with a clamp 137 or the like. Can do. Further, the horizontal portion 136b of the second L-shaped flange 136 also serves to guide the frame ring 521 when the frame ring 521 is inserted into the gap G described above.

  In the suspension jig 10 having such a configuration, the wire rope 14 from the winch 12 is passed through the second guide member 22 and the first guide member 20, and the end portion is connected to the shaft inner wall survey apparatus 1. The door 524 of the canopy 520 is opened, and the flange portion 18 of the hanging jig 10 is inserted obliquely downward into the shaft 501 from the elevator port. Then, the hanging jig 10 is fixed to the outer periphery of the canopy 520 by engaging the first L-shaped flange 135 of the mounting portion 16 with the frame ring 521 of the canopy 520. If necessary, the second L-shaped flange 136 may be fixed to the outer periphery of the canopy 520 using a tool such as a clamp or a shacoman. By driving the winch 12 of the suspension jig 10 thus installed, the shaft inner wall survey device 1 can be raised and lowered within the shaft 501.

  As described above, according to the present embodiment, the attachment portion 16 can be fixed to the outer peripheral portion of the canopy 520 by engaging the first L-shaped flange 135 with the frame ring 521 of the canopy 520. Attachment of the lower jig 10 to the canopy 520 is extremely easy. Further, when the suspension jig 10 is not sufficiently fixed only by the engagement between the first L-shaped flange 135 and the frame ring 521, the second L-shaped flange is used by using a tool such as a clamp or a shakoman. 136 can be firmly fixed to the outer periphery of the canopy 520.

  FIG. 17 is a diagram schematically showing a hanging jig 210 according to another embodiment of the present invention. In the present embodiment, the diameter of the pulley of the second guide member 222 is increased, and the wire rope 14 from the shaft inner wall investigation device 1 is a pulley of the first guide member 20 provided at the tip of the flange 18. The second guide member 222 is guided to the upper surface of the pulley, and is guided to the upper surface of the pulley. Also in the present embodiment, the wire rope 14 extends in the extending direction between the first guide member 20 and the second guide member 222 and the wire rope 14 extends from the second guide member 222 to the winch 12. It is comprised so that a direction axis line may shift | deviate.

  FIG. 18 is a diagram schematically showing a hanging jig 310 according to another embodiment of the present invention. In the present embodiment, the collar portion 318 is bent at the position where the second guide member 322 is provided. The wire rope 14 from the shaft inner wall investigation device 1 is guided by the upper surface of the pulley of the first guide member 20 provided at the tip of the collar portion 318 and is guided by the upper surface of the pulley of the second guide member 322. It is configured. Also in the present embodiment, the wire rope 14 extends in the extending direction between the first guide member 20 and the second guide member 322, and the wire rope 14 extends from the second guide member 322 to the winch 12. It is comprised so that a direction axis line may shift.

  In the embodiment described above, an example in which pulleys are used as the guide members 20 and 22 has been described. However, the guide members 20 and 22 may be any members as long as they have a function of guiding the wire rope 14. For example, an annular guide member 420 as shown in FIG. 19 or a spiral guide member 421 as shown in FIG. 20 can be used. The spiral guide member 421 shown in FIG. 20 can easily pass the wire rope 14 through the spiral guide member 421 even after both ends of the wire rope 14 are fixed.

  Moreover, in the Example mentioned above, although the example which attaches the attachment part 16 of the hanging jig | tool 10 to the frame ring 521 in the outer peripheral part of the canopy 520 was demonstrated, it is not restricted to this. For example, you may comprise so that the attaching part 16 of the hanging jig | tool 10 may be directly attached to the upper end part of the shaft 201 (liner plate 510).

  Moreover, in the Example mentioned above, although the winch 12 was connected to the wire rope 14 and the example which raises / lowers the shaft inner wall investigation apparatus 1 was demonstrated, the winch 12 does not necessarily need to be used. For example, the wire rope 14 may be pulled by human power.

  Although the preferred embodiments of the present invention have been described so far, it is needless to say that the present invention is not limited to the above-described embodiments and may be implemented in various forms within the scope of the technical idea thereof.

G Gap 1 Vertical shaft inner wall survey device 10 Suspension jig 12 Winch 14 Wire rope (striated body)
Reference Signs List 16 Attaching portion 18 Hook portion 20 First guide member 22 Second guide member 110 First member 111 Shaft portion 112 Flange 120 Second member 121 Shaft portion 122, 123 Flange 130 Third member 131 Shaft portion 132 Flange 133 Winch stand 134 Base 135 First L-shaped flange (engagement portion)
135a Vertical portion 135b Horizontal portion 136 Second L-shaped flange 136a Vertical portion 136b Horizontal portion 137 Clamp 210 Suspension jig 222 Second guide member 310 Suspension jig 318 Gutter 322 Second guide member 420 Annular guide member 421 Spiral guide member 500 Drainage well 501 Vertical shaft 501a (Vertical shaft) inner wall 505 Ladder 510 Liner plate 520 Canopy 521 Frame ring 522 Beam material 523 Expanded metal 524 Door 524a Handle

Claims (7)

A hanging jig for suspending a shaft inner wall investigation device for investigating the inner wall of a shaft,
An outer peripheral portion of the canopy covering the opening of the upper end portion of the shaft or an attachment portion attachable to the upper end portion of the shaft;
A flange extending from the mounting portion;
A first guide member, one end of which is connected to the shaft inner wall investigation device, the first guide member that guides the striated body at the tip of the flange portion;
The eaves portion is configured to be inclined obliquely downward through an elevator port formed in the canopy when the attachment portion is attached to an outer peripheral portion of the canopy or an upper end portion of the shaft. The hanging jig of the shaft inner wall investigation device.   The suspension jig of the shaft inner wall investigation device according to claim 1, wherein the attachment portion includes an engagement portion that can be engaged with an outer peripheral portion of the canopy or an upper end portion of the shaft.   The hanging jig for a shaft inner wall investigation device according to claim 1 or 2, wherein the eaves part comprises a plurality of members coupled in the longitudinal direction of the eaves part.   The shaft inner wall according to any one of claims 1 to 3, further comprising a second guide member that guides the linear body between the first guide member and the attachment portion. Suspension jig for investigation equipment.   The second guide member includes an axis line of the linear body between the first guide member and the second guide member, and an axis line from the second guide member to the other end of the linear body. The suspension jig of the shaft inner wall investigation device according to claim 4, wherein the suspension jig is configured so as to be shifted from each other.   6. The hanging jig for a shaft inner wall investigation device according to claim 4 or 5, wherein the flange portion is bent at a position where the second guide member is provided.   The suspension jig for a shaft inner wall investigation device according to any one of claims 1 to 6, wherein the attachment portion includes a flange that extends in a horizontal direction and contacts a top surface of an outer peripheral portion of the canopy. .

Images