JP5451786B2 - Lid removal device for civil engineering structures - Google Patents

Description

  The present invention relates to a lid removing device for a civil engineering structure such as a gutter or a manhole.

  Conventionally, as an apparatus for removing a civil engineering structure in which a lid is fitted and disposed in an upper opening, for example, a lid (grating) fitted in an opening of a side groove, for example, in Japanese Patent Laid-Open No. 10-60994 A disclosed lid removal device (hereinafter referred to as Conventional Example 1) has been proposed.

  The conventional example 1 is provided with a hook member that can be inserted into a gap in a grating portion of the grating, an arm member to which a handle is attached, a support leg attached to the distal end side of the arm member, and the support leg. It consists of casters.

  When removing the grating using the conventional example 1, first, after moving the conventional example 1 to the side groove, the arm member is tilted so that the handle is upward, and the hook member is inserted into the gap of the lattice portion. The lattice portion is held by the hook member, and then the handle is pushed downward. The leg part provided with the caster becomes a lever fulcrum, the hook member holds the lattice part and lifts the grating, and if this conventional example 1 is moved in this state, the grating can be removed from the side groove. become. Therefore, the operator does not have to bend the heavy grating with both hands and lift it off with both hands, and even a powerless operator can remove the heavy grating.

  However, in the conventional example 1, when sand or mud is accumulated in the gap between the grating and the side groove and solidified, the grating may not be easily removed. That is, when the conventional example 1 is actually used in such a case, since the grating is lifted in an oblique direction, there arises a problem that the grating is not detached from the side groove.

  Therefore, when sand or mud accumulates between the edge of the grating and the side groove and solidifies, or when there is no dimensional margin in the gap between the grating and the side groove, the conventional example 1 is used for the grating. Even if one end of the grating is lifted and removed, the end of the grating cannot be lifted because it abuts the middle of the wall of the side groove, and it takes time to remove the grating.

  Accordingly, the present inventor has proposed a lid removing device (hereinafter, Conventional Example 2) disclosed in Japanese Patent No. 4790770 in order to solve the above-described problem of Conventional Example 1.

  This conventional example 2 is provided with a latch holding portion and a grounding portion which can be inserted from the upper surface side into the gap of the grating portion of the grating at the front end portion and can hold the lattice portion from the lower surface side. , A push-down operation unit is provided to lift the grating that holds and holds the lattice portion with the latch holding portion with the grounding portion as a fulcrum by pushing down, and at the rear portion of the latch holding portion, the latch holding portion An abutting portion is provided that abuts against the upper surface portion of the lattice portion that is locked and held and is in a lifted state to maintain the grating substantially horizontal.

  Accordingly, the conventional example 2 can lift the grating in the vertical direction (because it can be lifted flat) compared to the above-described conventional example 1, and therefore, for example, sand or mud accumulates in the gap between the grating and the side groove. The grating can be easily removed even if it is solidified.

Japanese Patent No. 4790770

  The inventor has further researched and developed this lid body removal device, and as a result, has developed a lid body removal device for an innovative civil engineering structure with extremely high commercial value.

  The gist of the present invention will be described with reference to the accompanying drawings.

An apparatus for removing a lid body 2 from a civil engineering structure 1 having a lid body 2 disposed in an upper opening 1a, which is grounded to the upper opening 1a of the civil engineering structure 1 or a peripheral position thereof. The grounding portion 3 and a support portion 5 provided on the grounding portion 3 and disposed on the upper opening 1a and above the lid 2 are provided. The grounding portion 3 has a predetermined interval. The grounding portions 3A and 3B are arranged at opposite positions via the grounding portions, and the spacing between the grounding portions 3A and 3B is variably provided. The support portion 5 is provided with a jack 8. The jack 8 is provided with a lifting body 7 which is detachably connected to the lid 2 and lifts the lid 2 by the operation of the jack 8. It is concerned.

Moreover, the cover body removal apparatus in the civil engineering structure of Claim 1 WHEREIN: The said support part 5 is the guide structure part 9 provided in either one of the said earthing | grounding part 3A, 3B, and any of the said earthing | grounding part 3A, 3B Further, the present invention relates to a lid removing device for a civil engineering structure, characterized in that it is a telescopic structure that connects a slide structure portion 10 provided on the other side.

3. The lid removing apparatus for a civil engineering structure according to claim 2 , wherein the jack 8 is movably provided on the guide structure portion 9 or the slide structure portion 10, and the movement direction of the jack 8 depends on the support structure. The present invention relates to a lid removing device for a civil engineering structure, which is set in the same direction as the expansion / contraction direction of the portion 5.

Further, it is an apparatus for removing the lid 2 from the civil engineering structure 1 in which the lid 2 is disposed in the upper opening 1a, and is grounded to the upper opening 1a of the civil engineering structure 1 or its peripheral position. A grounding portion 3 and a support portion 5 provided on the grounding portion 3 and disposed above the lid body 2 and disposed in the upper opening 1a. A jack 8 is provided. The jack 8 is detachably connected to the lid body 2 and is provided with a plurality of lifting bodies 7 for lifting the lid body 2 by the operation of the jack 8. Each of the lifting bodies 7 is provided with the jack 8. 8 is provided with a connecting part 7a that is detachably connected to a plurality of horizontal positions of the elevating part 11 provided in 8, and is related to a lid removing apparatus for a civil engineering structure .

5. The lid removing apparatus for a civil engineering structure according to claim 4 , wherein the elevating part 11 comprises a horizontal part 11a and a vertical part 11b provided on the horizontal part 11a, and the horizontal part 11a includes the lifting body. 7 is provided, also, the vertical portion 11b according to the lid removal device in civil engineering structures, characterized in that it is fitted into the elongated hole portion 5a provided on the guide structure 9 or the slide structure 10 Is.

Further, in the cover removal apparatus in the civil engineering structure of claim 5, wherein the vertical portion 11b is a thin plate member, also apertures of the long hole portion 5a is configured equal to the thickness of the vertical portion 11b The present invention relates to a lid removing device for a civil engineering structure .

Moreover, the cover body removal apparatus in the civil engineering structure according to any one of claims 1 to 6 , wherein a manual hydraulic jack is adopted as the jack 8, and the lid body removal apparatus in the civil engineering structure is provided. It is.

The lid in civil engineering structures, characterized in that the cover removal apparatus, wherein the ground part 3 wheels 12 for movement are provided in the civil engineering structure according to any one of claims 1-7 This relates to the body removal device.

Further, in the cover removal apparatus in the civil engineering structure according to any one of claims 1-8, wherein the civil engineering structure 1 according to the lid removal device in civil engineering structures, characterized in that the gutters and manhole Is.

  Since the present invention is configured as described above, the lid in the innovative civil engineering structure with extremely high commercial value, such as being able to easily and reliably remove the lid arranged in the upper opening of the civil engineering structure. It becomes a body removal device.

It is a perspective view which shows a present Example. It is use condition explanatory drawing of a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is explanatory drawing of the principal part which concerns on a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is use condition explanatory drawing of a present Example. It is use condition explanatory drawing of a present Example. It is use condition explanatory drawing of a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  The grounding part 3 is grounded at the upper opening 1a of the civil engineering structure 1 or its peripheral position, and the support part 5 is disposed above the lid 2.

  In this state, when the lifting body 7 is connected to the lid body 2 and the jack 8 is operated to raise the lifting body 7, the lid body 2 rises in the vertical direction and is removed.

  Therefore, according to the present invention, even when sand or mud accumulates between the edge of the lid 2 and the upper opening 1a and solidifies, the gap between the lid 2 and the upper opening 1a is also reduced. Even when there is no dimensional margin in the gap, the lid 2 can be raised in the vertical direction, not in the oblique direction, and therefore can be removed very well.

  Moreover, since the present invention uses the jack 8 to raise the lid 2, a large force is not required and the lid 2 can be easily removed.

  A specific embodiment of the present invention will be described with reference to the drawings.

  A present Example is an apparatus for removing the cover body 2 from the civil engineering structures 1, such as a gutter and a manhole.

  In the present embodiment, the civil engineering structure 1 is a side groove (U-shaped groove) in which a grating 2 (a lid in which steel materials are assembled in a lattice shape) is fitted and disposed in the upper opening 1a. Any structure that exhibits the characteristics of this embodiment, such as a civil engineering structure 1 in which the lid 2 is disposed, such as a manhole or a drainage can be used as appropriate.

  In this embodiment, as shown in FIG. 1, it is composed of an appropriate metal member, and is provided between the grounding portions 3A and 3B disposed at the left and right facing positions and between the grounding portions 3A and 3B. And the supporting part 5 to be formed.

  As shown in FIGS. 1 and 2, each of the grounding portions 3A and 3B is a U-shaped body in which a vertical member 3b having a square cross section is vertically suspended at both left and right ends of a lateral member 3a having a square cross section. It is arranged in the left and right facing position via.

  The interval between the vertical members 3b constituting the respective grounding portions 3A and 3B is set to an interval according to the width of the upper opening 1a of a very general civil engineering structure. When the width of the upper opening 1a is wider than a general width, the facing distance between the grounding portions 3A and 3B is changed to correspond to the width of the upper opening 1a as will be described later (FIG. 3). reference).

  In addition, a moving wheel 12 is provided at the lower end of the vertical member 3b in the grounding portions 3A and 3B, and a handle 13 is provided in one of the grounding portions 3A and 3B.

  Therefore, the handle 13 can be grasped and the wheel 12 can be moved by rolling.

  As shown in FIGS. 1 and 2, the support portion 5 is configured by a erected body that is laid between the lateral members 3 a of the left and right grounding portions 3 A and 3 B. 3) It is erected. The number of support portions 5 may be one or two, and is not limited to a rod shape but may be a disk shape.

  The support portion 5 includes a guide structure portion 9 provided in one of the grounding portions 3A and 3B, and a slide structure provided slidably connected to the guide structure portion 9 and provided in either one of the grounding portions 3A and 3B. And the support portion 5 is extended and retracted, and the facing interval between the grounding portions 3A and 3B is variably provided.

  Specifically, as shown in FIG. 3, the guide structure 9 is a cylindrical body having a square cross section, and is fitted and connected to a slide structure 10 that is a rod having a square cross section.

  Therefore, it is possible to cope with the width of the civil engineering structure 1 (upper opening 1a) by expanding and contracting the support portion 5 to change the facing distance between the grounding portions 3A and 3B.

  Further, a screw hole 9a is provided at the lower surface of the distal end side of the guide structure portion 9, and a screw body 14 having a rotation portion 14b provided at the base end of the screw rod portion 14a is screwed into the screw hole 9a. The support 5 is brought into a non-stretchable state by screwing the screw body 14 and bringing the tip of the screw rod portion 14a into pressure contact with the slide structure portion 10.

  In addition, a jack 8 is provided on the support portion 5.

  Specifically, the jack 8 is provided in a slidably mounted state in a guide recess 9 a provided on the upper surface of the guide structure portion 9 (or the slide structure portion 10), and the movement direction of the jack 8 depends on the support portion 5. Is set in the same direction as the expansion / contraction direction (the slide direction of the slide structure 10 with respect to the guide structure 9).

  Accordingly, the lifting body 7 can always be lifted to the optimal position with respect to the lid 2, that is, the optimal position of the lid 2 that can be lifted in a balanced manner by the pair of lifting bodies 7 even when the support portion 5 is expanded and contracted. The lid 2 can be lifted stably.

  The jack 8 of the present embodiment is a manual hydraulic jack 8 having a known structure, and the forward and backward protruding portion 16 (ram) is raised by repeating the reciprocal swing operation (lifting operation) of the grip operation portion 15 (lever handle). It is configured.

  The structure of the jack 8 will be briefly described. The forward / backward protruding portion 16 is slidably inserted into the cylinder portion 17 so that it can be slid up and down, and the inside of the cylinder portion 17 has a circulation structure for circulating the oil. An oil circulation part 18 provided with a valve structure in various places, and a pump part 19 connected to the oil circulation part 18 to press and circulate the oil are provided in the jack body. The part 19 has a structure in which a pressing body (not shown) that presses oil is provided at the lower end of the handle as the grip operation part 15 that is slidably connected to the jack body.

  In the jack 8 having the above-described structure, when the gripping operation unit 15 is pushed downward and swinging operation (lowering operation) is performed, the pressing body presses the oil so that the valve structure is opened and the pump unit 19 and the oil circulation unit 18 are opened. The oil flows into the cylinder part 17 through the oil, and the oil flows into the cylinder part 17 so that the advancing / retreating projecting part 16 rises by a predetermined distance.

  Subsequently, when the gripping operation unit 15 is lifted upward and oscillated (up operation), the oil in the oil circulation unit 18 opens the valve structure and flows into the pump unit 19.

  Therefore, by repeating the reciprocating swinging operation (lifting operation) of the gripping operation unit 15, the forward / backward protruding portion 16 gradually rises. Thereafter, when the release valve 20 provided in the oil circulation part 18 is opened, the forward / backward protruding part 16 descends.

  Further, the advancing / retreating protrusion 16 is provided with an elevating part 11.

  As shown in FIGS. 1 and 2, the elevating part 11 includes a horizontal part 11a and a vertical part 11b provided on the horizontal part 11a. A jack 8 (advancing and retracting projecting part 16) is provided at the center of the lower surface of the horizontal part 11a. Are connected.

  In addition, a plurality of connection holes 11a ′ (four on each side) are arranged in parallel in the horizontal direction at the left and right positions of the connection position of the advancing / retreating projecting portion 16 on the lower surface of the horizontal portion 11. .

  The connection hole 11a 'is configured to be hooked and connected to the hook-like connection portion 7a of the lifting body 7.

  Accordingly, the pair of left and right lifting bodies 7 are suspended from the left and right positions of the jack 8, and the lid body 2 can be lifted in an even state using the lifting bodies 7.

  Further, a thin plate-like vertical portion 11 b is suspended from both left and right ends of the elevating unit 11.

  When the jack 8 is placed on the central upper arrangement body 5, the left and right vertical portions 11 b are elongated holes 5 a provided in the left and right support portions 5 among the plurality of (three) support portions 5 described above. And is moved along the long hole portion 5a as the jack 8 moves.

  Moreover, the thickness of the vertical part 11b is comprised equivalent to the opening part of the long hole part 5a.

  Therefore, the elevating part 11 is prevented from rotating in the horizontal direction by inserting the left and right vertical parts 11b into the long hole parts 5a.

  The lifting body 7 is configured to be connected to the lifting / lowering portion 11 provided on the jack 8 in a suspended state, and a plurality (two) of the lifting bodies 7 are provided in this embodiment.

  Specifically, the lifting body 7 is an appropriate metal rod-shaped body as shown in FIGS. 1, 4, and 5, and the upper end of the lifting body 7 is detachably engaged with a connecting hole 11 a provided in the elevating part 11. A hook-like connecting portion 7a for stopping and connecting is provided.

  The connecting portion 7a is provided with a rotating structure portion 7a 'that rotates in the axial direction.

  Further, the lifting body 7 is provided with a lid connecting portion 7 b that is connected to the lid 2 at the lower end.

  The lid connecting portion 7b is formed by forming the lower end portion of the lifting body 7 in a T-shape, and is inserted into a gap (vertically long hole) in the lattice portion of the lid 2 so that the rotating structure portion 7a ′ is 90 °. It is configured to be locked to the lower surface of the lattice portion of the lid body 2 by rotating the degree axis (see FIG. 5).

  The lifting body 7 is not limited to a rod shape but may be a chain shape or a chain shape. The connection structure of the lifting body 7 to the lid 2 is not limited to a locking structure, and may be an adsorption structure. Any material can be used as long as it exhibits the operational effects of the examples.

  The operation of removing the lid 2 (grating) using the lid removing apparatus (hereinafter, this apparatus) according to the present embodiment having the above-described configuration will be described.

  First, this apparatus is moved using the handle 13 and the wheel 12 so that the grounding portions 3A and 3B are grounded at the peripheral position of the upper opening 1a of the civil engineering structure 1, and the support portion 5 is attached to the lid 2. Arranged at the upper position. At this time, in order to lift the lid body 2 in a well-balanced manner, the jack 8 is moved relative to the guide structure portion 9 so that the jack 8 is positioned at the upper center of the lid body 2, and if necessary, the grounding portions 3A, 3B Adjust the distance between each other.

  Subsequently, the lid connecting portion 7b of the lifting body 7 is connected to the lid 2 in this state (the lid connecting portion 7b is inserted into the grating lattice hole and the rotating structure portion 7a ′ is rotated 90 degrees). Thereafter, the connecting part 7a of the lifting body 7 is connected to the connecting hole 11a of the elevating part 11 (see FIG. 6).

  Subsequently, when the jack 8 is operated to raise the left and right lifting bodies 7 with the jack 8 interposed therebetween, the lid body 2 rises in the vertical direction and is removed (see FIGS. 7 and 8). .

  In this state, the device is moved to a position where the lid 2 does not get in the way, the civil engineering structure 1 (side groove) is cleaned, and then the lid 2 is opened at the upper opening by performing the operation opposite to the removal. 1a.

  Since the present embodiment is configured as described above, when sand or mud accumulates between the edge of the lid 2 and the side groove 1 (upper opening 1a) and solidifies, or the lid 2 and the side groove 1 (upper part). Even if there is no dimensional margin in the gap with the opening 1a), the lid 2 can be raised in the vertical direction, so that it can be removed very well.

  Moreover, since the present Example uses the jack 8 in order to raise the cover body 2, it does not require so much force and can be removed easily.

  Further, in this embodiment, the grounding portion 3 is composed of left and right grounding portions 3A and 3B arranged at opposing positions with a predetermined interval therebetween, and the facing interval between the grounding portions 3A and 3B is variably provided. Therefore, the cover body 2 can be removed corresponding to the width of the upper opening 1a of the civil engineering structure 1.

  In the present embodiment, the support portion 5 connects the guide structure portion 9 provided in one of the grounding portions 3A and 3B and the slide structure portion 10 provided in the other of the grounding portions 3A and 3B. Since it is an expansion / contraction structure, the facing interval between the grounding portions 3A and 3B can be reliably changed.

  Further, in the present embodiment, the jack 8 is movably provided on the guide structure portion 9 (or the slide structure portion 10), and the moving direction of the jack 8 is set in the same direction as the expansion / contraction direction of the support portion 5. Therefore, it is always possible to lift the lid 2 with the right and left lifting bodies 7 in a well-balanced manner by arranging the jack 8 at the upper center position of the lid 2.

  Further, in this embodiment, a plurality of lifting bodies 7 are provided, each of the lifting bodies 7 is suspended from an elevating part 11 provided on the jack 8, and the upper part of each elevating body 7 is provided horizontally with the elevating part 11. Since the connecting portions 7a that are detachably connected are provided at a plurality of positions in the direction, the lifting body 7 can be disposed at a position where the lifting body 7 can be lifted in a balanced manner by appropriately changing the position of the lifting body 7. it can.

  Further, in this embodiment, the elevating part 11 includes a horizontal part 11a and a vertical part 11b provided on the horizontal part 11a. The lifting part 7 is provided on the horizontal part 11a, and the vertical part 11b has a guide structure. Since the horizontal portion 11a is prevented from turning in the horizontal direction because it is fitted in the long hole portion 5a provided in the portion 9 (or the slide structure portion 10), the lifting function of the lifting body 7 is ensured. Will be demonstrated.

  In addition, since the present embodiment employs a manual hydraulic jack as the jack 8, it has a simple structure, extremely good operability, and is excellent in mass productivity at a low cost.

  Further, in the present embodiment, since the moving wheel 12 is provided in the ground contact portion 3, the lid body 2 can be moved in a suspended state.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Civil engineering structure 1a Upper opening part 2 Cover body 3 Grounding part 3A Grounding part 3B Grounding part 5 Support part 5a Long hole part 7 Lifting body 7a Connection part 8 Jack 9 Guide structure part
10 Slide structure
11 Lifting part
11a Horizontal part
11b Vertical section
12 wheels

Claims (9)

An apparatus for removing a lid from a civil engineering structure comprising a lid provided in an upper opening, the grounding part being grounded at an upper opening of the civil engineering structure or a peripheral position thereof, and the grounding And a support portion disposed at a position above the lid disposed in the upper opening, and the grounding portion is arranged on the left and right grounding disposed at opposing positions with a predetermined interval. The support portion is provided with a jack, and the jack is detachably connected to the lid body, and the lid body is connected to the jack. A lid body removing device for a civil engineering structure, wherein a lifting body is provided that is lifted by the operation of. 2. The lid removing apparatus for a civil engineering structure according to claim 1 , wherein the support part includes a guide structure part provided on one of the grounding parts and a slide structure part provided on the other of the grounding parts. A lid removing device for a civil engineering structure, wherein the lid is a stretchable structure to be connected. 3. The lid removing apparatus for a civil engineering structure according to claim 2 , wherein the jack is movably provided on the guide structure part or the slide structure part, and the movement direction of the jack is the same as the extension / contraction direction of the support part. An apparatus for removing a lid in a civil engineering structure, characterized in that the direction is set. An apparatus for removing a lid from a civil engineering structure comprising a lid provided in an upper opening, the grounding part being grounded at an upper opening of the civil engineering structure or a peripheral position thereof, and the grounding And a support portion provided at a position above the lid body provided in the upper opening, and a jack is provided on the support portion, and the jack is detached from the lid body. A plurality of lifting bodies that are freely connected and lift the lid body by operating the jack are provided, and each of the lifting bodies has a connecting portion that removably connects to a plurality of horizontal positions of the lifting portion provided on the jack. A lid removing apparatus for a civil engineering structure, characterized by being provided. The lid removing device for a civil engineering structure according to claim 4 , wherein the elevating part is composed of a horizontal part and a vertical part provided on the horizontal part, and the lifting part is provided on the horizontal part, The vertical part is inserted in the long hole provided in the said guide structure part or the slide structure part, The cover body removal apparatus in the civil engineering structure characterized by the above-mentioned. In the lid removal device in civil structure of claim 5, wherein the vertical portion is a thin plate member, also apertures of the long hole portion and characterized by being configured equal to the thickness of the vertical portion A lid removing device for a civil engineering structure . The lid removing apparatus for a civil engineering structure according to any one of claims 1 to 6 , wherein a manual hydraulic jack is adopted as the jack. The lid removing apparatus for a civil engineering structure according to any one of claims 1 to 7 , wherein a wheel for movement is provided in the grounding portion. In the lid removal device in civil structure according to any one of claims 1-8, wherein the civil engineering structure cover removal device in civil engineering structures, characterized in that the gutters and manhole.

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