JP2009079416A - Barricade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a barricade in which a gate body for blocking advancement of a vehicle is made of a material that can sufficiently stand a collision of a vehicle, and ascendable/descendable by an air cylinder. <P>SOLUTION: The barricade is formed of: a casing which has a top board blocking one end of a cylindrical peripheral wall and having an opening formed therein, and is embedded in the ground so as to locate the top board on an upper side; an ascending/descending cylinder which is erected in the casing; the gate body which exhibits a cylindrical appearance, and protrudes from/recedes under the ground via the opening upon expansion/contraction of the ascending/descending cylinder; and a guide means for guiding the gate body in an axial direction. The air cylinder is employed as the ascending/descending cylinder, and the gate body is formed of: a metallic external cylinder; a metallic internal cylinder installed in the external cylinder; and a concrete portion interposed between the external cylinder and the internal cylinder so as to make close contact or substantially close contact with both internal peripheral surface of the external cylinder and external peripheral surface of the internal cylinder. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a barricade for preventing entry of a vehicle. More specifically, the present invention relates to a barricade that permits entry of a vehicle in a normal state while preventing entry of the vehicle in an emergency.

  Conventionally, various barricades have been provided to prevent the vehicle from entering a specific area such as a parking lot, and as one of them, an opening is formed in the top plate that closes one end of the cylindrical peripheral wall. A casing embedded in the ground with the top plate facing up, an elevating cylinder standing in the casing, and the elevating cylinder disposed in the casing such that its axial center extends in the vertical direction. And an exterior columnar gate body that protrudes and appears on the ground through the opening by extending and lowering the elevating cylinder, and guide means configured to be able to guide the gate body in the axial direction within the casing. There is something with.

  Such a barricade permits entry of the vehicle while the gate body is retracted into the casing, while preventing entry of the vehicle when the gate body is on the ground.

  By the way, since terrorist incidents have occurred frequently in recent years, barricades are being installed in public facilities such as airports to prevent vehicles from entering. Such barricades have the same basic configuration as those installed in parking lots as described above, but unlike parking lot gates for the general public, gates are used to prevent the entry of vehicles. The body is made strong. In other words, barricades installed in parking lots, etc. are installed mainly for the purpose of calling attention to the inability to enter, whereas barricades installed for the purpose of countering terrorism, etc., come into collision with vehicles. This is intended to prevent the vehicle from entering a specific area.

  For this reason, barricades installed for the purpose of countering terrorism, etc., have a gate body that is made of a thick, hollow column or a solid column made of metal such as iron or steel. Even so, the gate body is not destroyed. In connection with this, since the gate body becomes a heavy article in such a barricade, a hydraulic cylinder is adopted as a lifting cylinder for raising and lowering the gate body. As a result, the gate body can withstand the collision of the vehicle, and the gate body can be quickly moved up and down (lifted and lowered) according to the situation.

  However, as described above, when a hydraulic cylinder is used as the lifting cylinder, installation work (pipe work, etc.) is complicated, and there is a risk of oil leakage due to aging of the connection parts and pipes. Spilled oil in the sealed casing causes soil contamination.

  Therefore, it is conceivable that the elevating cylinder is composed of an air cylinder that uses air as a working fluid, which is easier to install than hydraulics and does not cause soil contamination. If the entire gate body is made of metal so that it can withstand, there is a problem that it is very heavy and the air cylinder cannot be moved up and down quickly. That is, since hydraulic cylinders use hydraulic oil with low compressibility as the working fluid, they can be moved up and down quickly even when the weight of the gate body is heavy. However, air cylinders use highly compressible air as the working fluid. Therefore, if the gate body to be moved up and down is too heavy, air in the air cylinder is compressed by the action of the weight, and accordingly, the gate body cannot be raised and lowered (lifted and lowered) more quickly than the hydraulic cylinder. There is.

  Therefore, in view of such circumstances, the present invention provides a barricade that can be raised and lowered with an air cylinder after the gate body for preventing the entry of the vehicle can sufficiently withstand the collision of the vehicle. The task is to do.

  The barricade according to the present invention has a casing in which an opening is formed in a top plate that closes one end of a cylindrical peripheral wall, the casing is buried in the ground with the top plate facing up, and an elevating cylinder installed upright in the casing And an exterior columnar gate body that is disposed in the casing so that its axial center extends in the vertical direction, and is connected to the upper end of the elevating cylinder, and extends and retracts to the ground through the opening as the elevating cylinder expands and contracts. And a guide means configured to be capable of guiding the gate body in the axial direction within the casing, wherein the elevating cylinder employs an air cylinder, and the gate body is made of metal. An outer cylinder part, a metal inner cylinder part built in the outer cylinder part, and an outer cylinder part so as to be in close contact with or substantially in close contact with the inner peripheral surface of the outer cylinder part and the outer peripheral surface of the inner cylinder part, Concrete interposed between the inner cylinder Characterized in that it comprises and.

  According to the barricade having the above-described configuration, the gate body includes a metal outer cylinder part, a metal inner cylinder part built in the outer cylinder part, an inner peripheral surface of the outer cylinder part, and an outer periphery of the inner cylinder part. Since the concrete part interposed between the outer cylinder part and the inner cylinder part is provided so as to be in close or close contact with each of the surfaces, the bending strength against the force from the direction orthogonal to the axial direction is high. Can withstand vehicle collisions.

  In addition, since the strength of the gate body is enhanced by providing a concrete part having a specific gravity smaller than that of the metal between the outer cylinder part and the inner cylinder part, the entire gate body was made of metal such as iron or steel. Lightweight compared to things. In other words, since concrete has a lower specific gravity than metal, the thickness of the gate body is extremely light compared to the case where the entire gate body is made of metal to make the gate body thick enough to withstand vehicle collisions. can do. Thereby, even if the air cylinder which uses the air which has compressibility as a working fluid is employ | adopted as a raising / lowering cylinder, a gate body can be made to appear and disappear rapidly. In addition, since an air cylinder can be adopted as the lifting cylinder for raising and lowering the gate body in this way, it is easy to install the piping and the like, and the working fluid (air) leaks from the piping and the connection part. And no soil contamination.

  As one aspect of the present invention, a flange-like flange portion is continuously provided on the lower end side of the gate body, and a plurality of positioning members are extended around the gate body on the upper surface of the flange portion, Each positioning member may contact the lower surface of the top plate to position the gate body in a state where the gate body is on the ground. If it does in this way, when a gate body comes out on the ground, a some positioning member will contact | abut to the lower surface of a top plate, and the flange part and a top plate will be in the state stretched by each positioning member. Thereby, the wobbling of the gate body that has come out on the ground can be reliably prevented, and the gate body can be brought into a stable state.

  For example, each positioning member may include a rod-shaped body extending upward from the flange portion, and an abutting body provided at the upper end portion of the rod-shaped body so as to be capable of changing the position in the axial direction. In this way, by changing the position of the contact body in the axial direction, the contact state between the contact body and the top plate can be adjusted. Thereby, each positioning member can be made to contact | abut uniformly with respect to a top plate.

  In this case, it is more preferable that the contact body is screwed to the rod-like body so that the position of the contact body can be changed in the axial direction. If it does in this way, the contact state with a top plate can be adjusted by simple operation of rotating a contact body around the axis of a rod-shaped body.

  As another aspect of the present invention, the guide means includes a casing that applies a force acting in a direction perpendicular to the axis of the gate body in a state where the gate body protrudes to the ground at at least two locations spaced in the direction of the axis. It is preferable that it is configured to be able to transmit to. In this way, it is possible to receive the overturning moment when the vehicle collides with the gate body by the guide means, while enabling the gate body that moves up and down to be guided.

  For example, the guide means is fixed to the casing and is connected to the first guide means for guiding the outer peripheral surface of the gate body in the vicinity of the lower surface of the top plate, and is connected to the lower end side of the gate body and guides to the inner surface of the peripheral wall. Second guiding means may be provided. In this way, the gate body can be guided smoothly, and the overturning moment with respect to the gate body can be reliably countered.

  In this case, the first guide means is constituted by a plurality of first guide members provided at intervals in the circumferential direction of the gate body, and the second guide means is provided at intervals in the circumferential direction of the peripheral wall. Each first guide member includes a roller that rolls on the outer surface of the gate body, and each second guide member includes a roller that rolls on the inner surface of the peripheral wall. Preferably it is. In this way, it is possible to reliably counter the overturning moment of the gate body, and the respective rollers of the first guide means and the second guide means roll on the outer peripheral surface of the gate body or the inner peripheral surface of the casing. By moving, smooth guidance to the gate body becomes possible.

  As described above, according to the barricade according to the present invention, the gate body for preventing the vehicle from entering can be sufficiently lifted by the air cylinder after being able to withstand the collision of the vehicle. An excellent effect can be achieved.

  Hereinafter, a barricade according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the barricade according to the present embodiment has an opening 111 formed in a top plate 101 that closes one end of a cylindrical peripheral wall 102, and is embedded in the ground with the top plate 101 facing upward. A casing 10, an elevating cylinder 20 standing in the casing 10, and an upper end of the elevating cylinder 20 are connected to the elevating cylinder 20. An exterior columnar gate body 30 that appears and disappears on the ground through the opening 111 by expanding and contracting 20 and a guide means 40 configured to be able to guide the gate body 30 in the axial direction in the casing 10 are provided. .

  In the barricade 1, substantially the entire gate body 30 is accommodated in the casing 10 by the expansion and contraction of the elevating cylinder 20, and the gate body 30 is in a retracted state where the top surface (cover 303 described later) is along the ground. Is configured to be switchable to an extended state protruding a predetermined amount on the ground via the opening 111.

  The casing 10 includes a box-shaped casing body 100 whose upper end is opened, and the top plate 101 that closes the upper end opening of the casing body 100.

  The casing body 100 includes the peripheral wall 102 that is open at both upper and lower ends, and a bottom plate portion 103 that closes a lower end opening (the other end) of the peripheral wall 102.

  The peripheral wall 102 according to the present embodiment is formed in a rectangular tube shape by continuously connecting flat wall portions 102a, 102b, 102c, and 102d, and four wall surfaces forming a planar shape are formed inside. Yes. The peripheral wall 102 is attached with reinforcing beams 104 extending in the lateral direction on the outer surfaces of the respective wall portions 102a, 102b, 102c, and 102d. In this embodiment, C-shaped steel is used for the reinforcing beam 104. The peripheral wall 102 (any one of the walls 102a, 102b, 102c, 102d) has a joint 105 that is fluidly connected to a pipe (not shown) laid on the outer surface side fixed to the inner surface side. The lift cylinder 20 and the joint 105 are fluidly connected via each other.

  As shown in FIGS. 1 to 3, the upper end portion (one end portion) of the peripheral wall 102 is provided with a flange portion 106 extending outward. The flange 106 has a quadrangular outer shape in plan view, and is provided with a plurality of bolt insertion holes 107 penetrating in the vertical direction at intervals in the circumferential direction. Further, a cylindrical member 108 is continuously provided on the lower surface of the flange portion 106 so as to be substantially concentric with the bolt insertion hole 107. The cylindrical member 108 is set to have an inner diameter that can house a nut N that is screwed into a bolt B inserted into the bolt insertion hole 107.

  As shown in FIGS. 1 and 2, the bottom plate portion 103 is made of a plate material having a quadrangular shape in plan view in which the lower end opening of the peripheral wall 102 is closed. The bottom plate portion 103 is provided with a first cylinder mounting portion 109 for fixing the elevating cylinder 20 at the center of the upper surface. The first cylinder mounting portion 109 is formed in a trapezoidal shape, and includes a leg portion 109a erected on the bottom plate portion 103 and a base plate portion 109b provided on the upper end of the leg portion 109a. . The first cylinder mounting portion 109 has a screw hole (not shown) for screwing a bolt (not numbered) into the base plate portion 109b, and the base plate is formed by the bolt screwed into the screw hole. The portion 109b and the elevating cylinder 20 (cylinder end SE) are fastened.

  The top plate 101 has a rectangular outer shape in plan view, and can be placed on the flange 106 as shown in FIG. The top plate 101 has a through hole 110 formed at a position corresponding to the bolt insertion hole 107 of the flange portion 106. The through hole 110 is formed of a stepped hole having a large diameter on the upper surface side, and the head of the bolt B is accommodated in the large diameter portion. That is, the through hole 110 is a hole in which a counterbore is formed, and is formed so that the head of the bolt B that fixes the top plate 101 does not protrude from the upper surface of the top plate 101.

  The top plate 101 is provided with the opening 111 for allowing the gate body 30 to pass (moving in the vertical direction). The opening 111 is formed corresponding to the cross-sectional shape of the gate body 30 with the center of the hole positioned at the center of the top plate 101. In the present embodiment, the gate body 30 is formed in a circular shape in cross section, and the opening 111 is also formed in a circular shape in plan view corresponding to this.

  Returning to FIGS. 1 and 2, the elevating cylinder 20 employs an air cylinder that uses working fluid as air, and is provided so that its axis extends in the vertical direction. In the present embodiment, in the air cylinder 20, the cylinder end SE is fixed to the first cylinder mounting portion 109 (the base plate portion 109b) via the bolt B as described above. The elevating cylinder 20 has pipes P connected to the upper and lower ends of the cylinder S, forcibly supplying air from the lower end side of the cylinder S and exhausting air from the upper end side of the cylinder S. While the rod R extends, the air is exhausted from the lower end side of the cylinder S and the air is naturally introduced from the upper end side of the cylinder S so that the rod R is shortened by the dead weight of the rod R (gate body 30). Has been. The expansion and contraction of the air cylinder 20 is performed by switching a solenoid valve (not shown) provided in a pipe connecting the air cylinder 20 and a compressor (not shown). The solenoid valve can be switched by remote control such as.

  The gate body 30 includes a metal outer cylinder part 300, a metal inner cylinder part 301 embedded in the outer cylinder part 300, and a concrete interposed between the outer cylinder part 300 and the inner cylinder part 301. Part 302.

  In the gate body 30 according to the present embodiment, a cover 303 for closing the opening 111 of the top plate 101 is provided at the upper end. In addition, the gate body 30 has a flange-shaped flange portion 304 continuously provided on the lower end side, and a plurality of positioning members 305... Are extended on the upper surface of the flange portion 304 around the gate body 30. Has been.

  The outer cylinder part 300 according to the present embodiment is formed in a cylindrical shape. The outer cylinder portion 300 is made of a metal such as iron or steel, and is made of stainless steel in the present embodiment. The wall thickness of the outer cylindrical portion 300 is preferably set to 3 mm to 10 mm, and more preferably set to 5 mm to 7 mm. In addition, the outer cylinder part 300 which concerns on this embodiment is set to 6 mm in thickness.

  The outer cylinder part 300 is provided with a cover attaching part 306 for attaching the cover 303 to the upper end (one end) side and a second cylinder attaching part 307 for connecting the upper end (rod end RE) of the air cylinder 20. The outer cylinder part 300 according to the present embodiment is provided with a belt plate 311 whose both ends in the longitudinal direction are connected to the inner peripheral surface of the outer cylinder part 300 at a position that is a predetermined distance away from the upper end of the outer cylinder part 300. The attachment member 312 having the cover attachment portion 306 and the second cylinder attachment portion 307 is fixed to the band plate 311. The band plate 311 is provided with a hole (not numbered) for loosely fitting a nut N screwed into a threaded portion 200 formed in the rod end RE of the air cylinder 20 in the longitudinal center. Through holes (not shown) through which bolts (not numbered) for fixing the attachment member 312 are inserted are formed at both ends of the.

  The attachment member 312 extends upward from both side edges of the second cylinder attachment portion 307 and the second cylinder attachment portion 307 in the form of a strip plate disposed on the belt plate 311. A pair of leg portions 308 and 308 and a cover attachment portion 306 having both ends connected to the upper ends of the leg portions 308 and 308 so as to straddle the pair of leg portions 308 and 308 are configured.

  The second cylinder mounting portion 307 is a screw portion 200 provided at the tip end portion (rod end RE) of the rod R of the air cylinder 20 so as to be concentric with the hole of the strip plate 311 at a substantially central portion in the longitudinal direction. A through-hole 310 is inserted through. The through hole 310 of the second cylinder mounting portion 307 is formed to have a larger diameter than the threaded portion 200 of the rod R, and when a force is applied in a direction orthogonal to the axial direction, the force is applied to the rod R. It is configured so as not to act directly. Two nuts N are screwed into the threaded portion 200 of the rod R, and the second cylinder mounting portion 307 is sandwiched between the two nuts N to fix the rod R.

  The second cylinder mounting portion 307 has through holes (not shown) corresponding to the through holes provided at both ends of the strip 311 at both ends in the longitudinal direction. Thus, the attachment member 312 is configured to screw the nut (not numbered) to the bolt (not numbered) inserted into the through holes at both ends of the second cylinder attaching part 307 and the band plate 311. It is fixed to the plate 311.

  The pair of leg portions 308 and 308 are provided over the entire length of the second cylinder mounting portion 307 in the longitudinal direction. In the present embodiment, the second cylinder mounting portion 307 and the pair of leg portions 308 and 308 are integrally formed by being used for a C-shaped rope. That is, the pair of leg portions 308 and 308 are configured by a pair of opposing pieces of the C-shaped rope, and the second cylinder mounting portion 307 is configured by a portion connecting the pair of pieces (leg portions) 308 and 308. Has been.

  The cover attaching portion 306 is provided so as to connect the upper ends of the pair of leg portions 308, 308. In the present embodiment, the cover attaching portion 306 is provided at two positions with an interval in the longitudinal direction of the second cylinder attaching portion 307. Is provided. Each cover attachment portion 306 is made of a plate material, and has a hole 309 through which a bolt B for attaching the cover 303 is inserted.

  The cover 303 is formed in a disk shape, and is set to a size that completely closes one end (upper end opening) of the outer cylinder part 300. The cover 303 according to the present embodiment is set to have an outer diameter slightly larger than the outer diameter of the outer cylindrical portion 300, and the outer peripheral end portion of the cover 303 is attached to the outer cylindrical portion 300 with respect to the outer cylindrical portion 300. It is configured to have a bowl shape. That is, the cover 303 according to the present embodiment has an outer diameter set slightly larger than the hole diameter of the opening 111 of the top plate 101, and the outer peripheral end portion is placed on the peripheral edge of the opening 111 in a state where the opening 111 is closed. It is configured as follows.

  The cover 303 is provided with a bolt insertion hole 313 for inserting the bolt B at a position corresponding to the hole 309 of the cover mounting portion 306 so as to be in the above-described manner. The bolt insertion hole 313 is a stepped hole having a large diameter on the upper surface side, and the head of the bolt B is accommodated in the large diameter portion. That is, the bolt insertion hole 313 is a hole in which a counterbore is formed, like the through hole 110 of the top plate 101, and is formed so that the head of the bolt B that fixes the cover 303 does not protrude from the upper surface of the cover 303. Yes. Accordingly, the cover 303 having the above-described configuration is attached in a state where the opening of the outer cylinder portion 300 is closed by screwing the nut N into the bolt B inserted into the bolt insertion hole 313 and the hole 309 of the cover attachment portion 306. It is like that.

  The inner cylinder portion 301 has a cross-sectional shape similar to that of the outer cylinder portion 300. That is, in the present embodiment, as described above, since the outer cylinder part 300 has a cylindrical shape, the inner cylinder part 301 has a cylindrical shape set to have a smaller diameter than the outer cylinder part 300. The inner cylinder portion 301 is inserted substantially concentrically with the outer cylinder portion 300, and a predetermined gap is formed between the inner cylinder portion 301 and the inner peripheral surface of the outer cylinder portion 300. In the present embodiment, the inner cylinder portion 301 is set to a length such that the upper end is substantially level with the upper end of the outer cylinder portion 300, while the lower end side extends downward from the lower end of the outer cylinder portion 300. As described above, since the outer plate 300 is provided with the band plate 311 and the attachment member 312, the upper end portion of the inner cylinder portion 301 is a recess into which the band plate 311 and the attachment member 312 are fitted (not numbered). ) Are formed to face each other. Thereby, even if the band plate 311 and the attachment member 312 are provided so as to cross the internal space of the outer cylinder part 300, the upper ends of the outer cylinder part 300 and the inner cylinder part 301 can be at the same level.

  And the inner cylinder part 301 is comprised with metals, such as iron and steel similarly to the outer cylinder part 300, and is comprised with stainless steel in this embodiment. The wall thickness of the inner cylinder portion 301 is preferably set to 3 mm to 8 mm, and more preferably set to 4 mm to 6 mm. In addition, the inner cylinder part 301 which concerns on this embodiment is set to 5 mm in thickness. Further, the inner cylinder portion 301 has an inner diameter so that the air cylinder 20 can be housed inside.

  The concrete part 302 is obtained by solidifying concrete filled in a gap formed between the outer cylinder part 300 and the inner cylinder part 301, and the thickness thereof is 5% to the outer diameter of the gate body 30. Set to 15%. That is, the gap formed between the outer cylinder part 300 and the inner cylinder part 301 is formed at 5% to 15% with respect to the outer diameter of the outer cylinder part 300. The thickness of the concrete portion 302 according to this embodiment is set to about 10% with respect to the outer diameter of the gate body 30. Since the concrete portion 302 is preferably in close contact with the inner peripheral surface of the outer tube portion 300 and the inner peripheral surface of the inner tube portion 301, in this embodiment, the concrete portion 302 is made of non-shrinkable concrete. The concrete part 302 is filled by filling concrete while applying vibration to at least one of the outer cylinder part 300 and the inner cylinder part 301, or stirring the filled concrete with a bar or the like. It is formed by removing the air from the concrete that has been solidified and then solidifying the concrete.

  The flange portion 304 according to the present embodiment is provided at a lower end of the gate body 30 so as to close an annular opening formed between the outer cylinder portion 300 and the inner cylinder portion 301. That is, the flange portion 304 is made of a plate material in which a hole for inserting the inner cylinder portion 301 is formed, and the inner cylinder portion 301 is inserted into the hole so that the upper surface is brought into contact with the lower end of the outer cylinder portion 300. The peripheral edge of the hole of the flange portion 304 and the outer periphery of the inner cylinder portion 301 are welded, and the upper surface of the flange portion 304 and the lower end portion of the outer cylinder portion 300 are welded. The flange portion 304 according to the present embodiment has a similar shape to the peripheral wall 102 of the casing 10 in plan view. Therefore, the flange portion 304 according to the present embodiment is formed in a square shape in plan view, and is formed so as to have a substantially constant interval with the peripheral wall 102.

  Each of the plurality of positioning members 305 is configured to position the gate body 30 in contact with the lower surface of the top plate 101 when the gate body 30 is in an extended state (a state where the gate body 30 is on the ground). ing. More specifically, four positioning members 305... According to the present embodiment are provided at equal intervals around the gate body 30, and each of the rod-shaped bodies 305 a extending upward from the flange portion 304, A contact body 305b is provided at the upper end of the rod-shaped body 305a so as to be capable of changing its position in the axial direction.

  The contact body 305b is screwed to the rod-shaped body 305a so that the position of the contact body 305b can be changed in the axial direction. That is, a male screw is formed on at least the upper end of the rod-shaped body 305a, and a female screw that is screwed to the male screw is formed on the contact body 305b. Accordingly, by rotating the contact body 305b around the axis of the rod-shaped body 305a, the position of the contact body 305b of each positioning member 305 ... with respect to the lower surface of the top plate 101 is changed. The contact state can be adjusted.

  The guide means 40 is provided in the casing 10 and guides the gate body 30 following the expansion and contraction of the air cylinder 20 in the axial direction. Here, guiding refers to guiding a relatively moving object in a specific direction, for example, by sliding in contact with the entire outer periphery of the gate body 30 or the entire inner periphery of the casing 10, The gate body 30 is guided so that it can move in the axial direction, or is slidably contacted with the outer peripheral surface of the gate body 30 or the inner peripheral surface of the casing 10 at a plurality of positions at intervals in the circumferential direction. It means to guide it so that it can move in the axial direction.

  Further, the guide means 40 according to the present embodiment has a force that acts in a direction perpendicular to the axis of the gate body 30 at at least two positions spaced apart in the vertical direction when the gate body 30 is in the extended state. Is transmitted to the casing 10. That is, the guide means 40 is configured to be able to counter the overturning moment when the overturning moment is generated in the gate body 30 in the extended state.

  Here, the guide means 40 will be described in detail. The guide means 40 according to this embodiment is fixed to the casing 10 and is a first guide means for guiding the outer surface of the gate body 30 in the vicinity of the lower surface of the top plate 101. 400 and a second guide means 450 that is connected to the lower end of the gate body 30 and is guided by the inner surface (wall surface) of the casing 10.

  In the present embodiment, the first guide means 400 includes a roller (hereinafter referred to as a first roller) 410 that is provided at intervals in the circumferential direction of the gate body 30 and rolls on the outer peripheral surface of the gate body 30. It comprises a plurality of first guide members 401. On the other hand, the second guide means 450 is provided with a plurality of rollers (hereinafter referred to as second rollers) 460 that are provided at intervals in the circumferential direction of the peripheral wall 102 and roll on the peripheral wall 102 of the casing 10. It is comprised by the 2nd guide member 451 ....

  As shown in FIGS. 4A and 4B, each first guide member 401... Has a first main frame 402 fixed to the casing 10 (the top plate 101 in the present embodiment), and the first main frame 402. The main frame 402 includes a first sub-frame 403 that is swingably provided, and a first roller 410 pivotally attached to the first sub-frame 403.

  The first main frame 402 includes a pair of first main facing portions 402a and 402a that face each other with a space therebetween, and a first main connecting portion 402b that connects one ends of the first main facing portions 402a and 402a. It is formed in a U-shaped cross section. The first main frame 402 has one end (upper end) on the lower surface of the top plate 101 of the casing 10 such that the other ends of the pair of first main facing portions 402a and 402a face the gate body 30 (outer cylinder portion 300). ) Are connected. In the first main frame 402, a bolt (hereinafter referred to as a first push bolt) B1 is screwed into a first main connection portion 402b. Further, a shaft body (first shaft body) 405 for pivotally supporting the first subframe 403 is inserted through the pair of first main facing portions 402a and 402a. That is, a first shaft body 405 for supporting the first subframe 403 is provided so as to straddle the pair of first main facing portions 402a and 402a.

  The first sub-frame 403 includes a pair of first sub-opposing portions 403a and 403a spaced from each other so as to be interposed between the pair of first main opposing portions 402a and 402a, The sub-opposing portions 403a and 403a are connected to each other at the first sub-connecting portion 403b and are formed in a U-shaped cross section. The first sub-frame 403 has the first sub-connecting portion 403b of the first main frame 402 facing the other end of the pair of first sub-facing portions 403a and 403a toward the gate body 30 (outer cylinder portion 300). It is provided so as to face the main connection portion 402b. Accordingly, the first sub-frame 403 is configured such that the first sub-connecting portion 403b is pressed by the first push bolt B1 of the first main frame 402.

  The first sub-opposing portions 403a and 403a are provided with a first shaft hole 404 into which the first shaft body 405 straddling the pair of first main facing portions 402a and 402a is inserted. The first shaft hole 404 is formed in a long hole shape extending in the extending direction of the first sub-opposing portions 403a and 403a (the direction extending from the first sub-connecting portion 403b). As a result, the first sub-frame 403 is pivotally supported by the first shaft body 405 while being movable in the direction in which the first shaft hole 404 extends, and the position of the first sub-frame 403 relative to the gate body 30 can be adjusted by pressing the first push bolt B1. It is like that.

  The first roller 410 is interposed between a pair of first sub-opposing portions 403a and 403a of the first sub-frame 403 so that a part of the first roller 410 protrudes from the other end of the first sub-opposing portions 403a and 403a. Thus, the first sub-opposing portions 403a and 403a are pivotally supported. The first guide member 401... According to the present embodiment is provided with two first rollers 410. That is, the two first rollers 410 are pivotally supported by the first sub-opposing portions 403a and 403a so as to be symmetrical with respect to the pressing position by the first pressing bolt B1, and the first sub-frame is supported by the first pressing bolt B1. By pressing 403, each first roller 410 comes into contact with the wall surface of the peripheral wall 102. Four first guide members 401 with the above-described configuration are provided at intervals in the circumferential direction of the gate body 30.

  Each of the second guide members 451, as shown in FIGS. 5 (a) and 5 (b), a second main frame 452 fixed to the gate body 30 (in this embodiment, the flange portion 304), The second main frame 452 includes a second sub frame 453 swingably provided, and a second roller 460 pivotally attached to the second sub frame 453.

  The second main frame 452 includes a pair of second main facing portions 452a and 452a that face each other with a space therebetween, and a second main connecting portion 452b that connects one ends of the second main facing portions 452a and 452a. It is formed in a U-shaped cross section. The second main frame 452 is a flange of the gate body 30 such that the other ends of the pair of second main facing portions 452a and 452a face the peripheral wall 102 (wall portions 102a, 102b, 102c, and 102d) of the casing 10. One end (lower end) is connected to the upper surface of the part 304. In the second main frame 452, a bolt (hereinafter referred to as a second push bolt) B2 is screwed into the second main connection portion 452b. Further, a shaft body (second shaft body) 455 for pivotally supporting the second subframe 453 is inserted through the pair of second main facing portions 452a and 452a. That is, the second shaft body 455 for supporting the second subframe 453 is provided so as to straddle the pair of second main facing portions 452a and 452a.

  The second sub-frame 453 includes a pair of second sub-opposing portions 453a and 453a spaced from each other so as to be interposed between the pair of second main facing portions 452a and 452a, The sub-opposing portions 453a and 453a are configured by a second sub-connecting portion 453b in which one ends of the sub-opposing portions 453a are connected to each other, and are formed in a U-shaped cross section. The second sub-frame 453 has the second sub-connecting portion 453b facing the second main frame with the other end of the pair of second sub-opposing portions 453a, 453a facing the peripheral wall 102 (wall portions 102a, 102b, 102c, 102d). It is provided so as to face the second main connection part 452b of 452. Accordingly, the second sub-frame 453 is configured such that the second sub-connecting portion 453b is pressed by the second push bolt B2 of the second main frame 452.

  The second sub-opposing portions 453a and 453a are provided with a second shaft hole 454 into which the second shaft body 455 is inserted across the pair of second main facing portions 452a and 452a. The second shaft hole 454 is formed in a long hole shape extending in the extending direction of the second sub-opposing portions 453a and 453a (the direction extending from the second sub-connecting portion 453b). Accordingly, the second sub frame 453 is pivotally supported by the second shaft body 455 in a state in which the second sub frame 453 can move in the direction in which the second shaft hole 454 extends, and the position of the second sub frame 453 can be adjusted with respect to the peripheral wall 102 by pressing the second push bolt B2. It has become.

  The second roller 460 is interposed between the pair of second sub-opposing portions 453a and 453a of the second sub-frame 453 so that a part of the second roller 460 protrudes from the other end of the second sub-opposing portions 453a and 453a. The second sub-opposing portions 453a and 453a are pivotally supported. The second guide members 451... According to this embodiment are provided with the two second rollers 460. That is, the two second rollers 460 are pivotally supported by the second sub-opposing portions 453a and 453a so as to be symmetrical with respect to the pressing position by the second pressing bolt B2, and the second sub-frame is supported by the second pressing bolt B2. By pressing 453, each second roller 460 comes into contact with the wall surface of the peripheral wall 102. A plurality of second guide members 451... Having the above-described configuration are provided at intervals in the circumferential direction of the peripheral wall 102. In the present embodiment, two second guide members 451... Corresponding to each side of the flange portion 304 having a rectangular shape. (A total of eight in the circumferential direction).

  The barricade 1 according to the present embodiment has the above-described configuration. Next, installation of the barricade 1 will be described. In the barricade 1 according to the present embodiment, since the gate body 30 is formed in a columnar appearance, a plurality of barricades 1 are set side by side with respect to a region where the vehicle is prevented from entering. On the premise of this installation mode, first, as shown in FIGS. 6A to 6C, a base F for fixing each barricade 1 in the ground is formed. Specifically, as shown in FIG. 6A, a target region is excavated to form a hole H that is wider than the planar size of the casing 10 and deeper than the length of the casing 10 in the axial direction. After that, as shown in FIG. 6B, the casing 10 is installed in the excavated hole H so that the finished upper surface of the foundation F and the upper surface of the top plate 101 are substantially flush with each other. A pipe (not shown) connected to a compressor (not shown) is connected to the joint 105. And as shown in FIG.6 (c), concrete is poured into the circumference | surroundings of the casing 10, and the foundation F is formed. In forming the foundation F, it is preferable that concrete is poured after reinforcing reinforcing bars are disposed around the casing 10 in the same manner as a general foundation.

  Then, as shown in FIG. 6D, after the air cylinder 20 and the gate body 30 are installed in the casing 10 in the above-described manner, the gate body 30 extends a predetermined amount from the top surface of the top plate 101. The positions of the contact members 305b of the positioning members 305 are adjusted so that the contact member 305b contacts the lower surface of the top plate 101 in the extended state. At this time, since the top plate 101 is removed and the upper end of the casing 10 is in an open state, the arrangement of the contact bodies 305b of the positioning members 305... Is adjusted from the upper end side of the casing 10. Then, after adjusting the positioning members 305 as shown in FIG. 6 (e), the top plate 101 is fixed to the flange portion 106, and then the cover 3030 is attached to the cover mounting portion 306 as shown in FIG. 6 (f). Fix it. Thereby, installation of the barricade 1 which concerns on this embodiment is completed. In this embodiment, since the cover 303 is set to be slightly larger than the opening 111 of the top plate 101, the cover 303 is fixed to the cover attaching portion 306 after the top plate 101 is attached. When the cover 303 is the same size and the same shape as the opening 101, the cover 303 may be fixed before the top plate 101 is fixed.

  As shown in FIG. 7A, the barricade 1 installed in this way has the gate body 30 in a retracted state when it is normal (when an abnormal vehicle is not traveling), The vehicle is ready to run. In the barricade 1 according to the present embodiment, air is present in the cylinder S of the air cylinder 20 even when the gate body 30 is in the retracted state, so that the air cylinder 20 becomes a cushion when the vehicle travels on the cover 303. Stable running is possible.

  Then, as shown in FIG. 7 (b), when an abnormality occurs (when the sluggish vehicle C, which must be prevented from entering), the solenoid valve is switched by remote operation and air (compressed) is supplied to the air cylinder 20. Air). As a result, the air cylinder 20 extends, and the gate body 30 rises along with this, and comes out to the ground (extended state). In the barricade 1 according to the present embodiment, the gate body 30 is composed of the outer cylinder portion 300, the inner cylinder portion 301, and the concrete portion 302, so that it is lighter in weight than the gate body 30 made entirely of metal. Therefore, the air cylinder 20 extends quickly and smoothly, and the gate body 30 that follows the air cylinder 20 also rises quickly and smoothly. Thus, when the gate body 30 moves up, the first roller 410 of the first guiding means 400 fixed to the casing 10 guides the outer periphery of the gate body 30 and the second guide provided on the lower end side of the gate body 30. The second roller 460 of the means 450 is guided to the inner surface (wall surface) of the casing 10.

  And the contact body 305b of each positioning member 305 ... will contact | abut the lower surface of the top plate 101 in the state (extension state) where the gate body 30 became the predetermined extension amount. In this state, since the supply of compressed air to the air cylinder 20 is continued, each positioning member 305... Functions as a tension rod between the top plate 101 and the flange 304, and the gate body 30 rolls. Is prevented.

  In this state, if the vehicle C rushes and collides with the gate body 30, the overturning moment acting on the gate body 30 due to the collision is countered by the first guide means 400 and the second guide means 450. It will be. In addition, since the barricade 1 according to the present embodiment is configured such that the outer periphery of the flange portion 304 is spaced from the peripheral wall 102 over the entire circumference, for example, an excessive force acts on the second guide unit 450. Even if the second guide means 405 is destroyed, the flange portion 304 can come into contact with the peripheral wall 102 and receive a falling moment (force) on the gate body 30.

  Even if the first guiding means 400 and the second guiding means 450 can counter the overturning moment in this way, the gate body 30 is deformed if the strength of the gate body 30 is low. Since the gate body 30 includes the concrete portion 302 between the outer cylinder portion 300 and the inner cylinder portion 301, the gate body 30 can withstand a collision without being deformed. As a result, the vehicle C is reliably prevented from entering.

  By preventing the deformation of the gate body 30 in this way, the gate body 30 can be smoothly lowered after the vehicle B that has collided is removed, and can be smoothly restored to a state in which the passage of the vehicle is permitted.

  As described above, in the barricade 1 according to the present embodiment, the gate body 30 includes the metal outer cylinder part 300, the metal inner cylinder part 301 embedded in the outer cylinder part 300, and the outer cylinder part 300. And a concrete portion 302 interposed between the inner cylinder portion 301 and the inner cylinder portion 301, the bending strength with respect to the force from the direction orthogonal to the axial direction is high, and can sufficiently resist the collision of the vehicle C. it can.

  In addition, since the gate body 30 has the above-described configuration, the gate body 30 is lighter than the entire body made of metal such as iron or steel. Can be lifted and lowered. And since an air cylinder can be employ | adopted for the raising / lowering cylinder 20, piping operation | work etc. are easy, and even if it leaks from the piping P or a connection part after installation, it does not become soil contamination.

  Further, the casing 10 is provided with a flange-shaped flange portion 304 connected to the lower end side of the gate body 30 and a plurality of positioning members 305 at intervals around the gate body 30 on the upper surface of the flange portion 304. , And the positioning members 305 are in contact with the lower surface of the top plate 101 to position the gate body 30 in a state where the gate body 30 is in the extended state. When the gate 30 is in the extended state, the wobbling of the gate body 30 can be reliably prevented.

  Each of the plurality of positioning members 305... Has a rod-like body 305a extending upward from the flange portion 304, and an abutment body provided at the upper end of the rod-like body 305a so as to be capable of changing the position in the axial direction. 305b, the contact state between the contact body 305b and the top plate 101 can be adjusted, and each positioning member 305 can be brought into contact with the top plate 101 in a uniform state. it can.

  In particular, in the present embodiment, the contact body 305b is screwed to the rod-shaped body 305a so that the position of the contact body 305b can be changed in the axial direction, so that the contact body 305b is rotated around the axis of the rod-shaped body 305a. The contact state with the top plate 101 can be adjusted by such a simple operation.

  Further, when the gate body 30 is in the extended state, the guide means 40 transmits to the casing 10 a force acting in a direction perpendicular to the axis of the gate body 30 at two positions spaced apart in the vertical direction. Since the gate body 30 can be guided, the overturning moment when the vehicle C collides with the gate body 30 can be received by the guide means 40.

  In this embodiment, the guide means 40 is fixed to the casing 10, and the first guide means 400 guides the outer peripheral surface of the gate body 30 in the vicinity of the lower surface of the top plate 101, and the lower end of the gate body 30. Since the second guide means 450 that is continuously provided and guided to the inner peripheral surface of the casing 10 is provided, the gate body 30 can be smoothly guided, and the overturning moment with respect to the gate body 30 can be reliably counteracted. can do.

  In particular, the first guide means 400 is provided with a plurality of first guide members 401 provided with first rollers 410 that are provided at intervals in the circumferential direction of the gate body 30 and roll on the outer peripheral surface of the gate body 30. The second guide means 450 includes a plurality of second guide members 451 provided with second rollers 460 that are provided at intervals in the circumferential direction of the peripheral wall 102 and roll on the peripheral wall 102 of the casing 10. Since it is configured, it is possible to reliably counter the overturning moment of the gate body 30, and the rollers 410 and 460 of the first guide means 400 and the second guide means 450 are arranged on the outer peripheral surface of the gate body 30. Or the smooth guidance with respect to the gate body 30 is possible by rolling on the inner peripheral surface of the casing 10.

  In addition, this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

  In the above embodiment, the gate body 30 in which the concrete portion 302 is formed by filling the gap formed over the entire circumference between the outer cylinder portion 300 and the inner cylinder portion 301 is used. For example, as shown in FIGS. 8A and 8B, the inner periphery of the outer cylinder part 300 and the outer periphery of the inner cylinder part 301 are interposed via ribs 50 extending in the axial direction. Then, concrete may be filled between the outer cylinder part 300 and the inner cylinder part 301. In this case, it is preferable to provide a plurality of ribs 50... Radially about the axis of the outer cylinder part 300 and the inner cylinder part 301. Further, when the ribs 50 are provided so as to partition the gap between the outer cylinder part 300 and the inner cylinder part 301 in the circumferential direction, the spaces on both sides partitioned by the ribs 50 are defined with respect to the ribs 50. It is preferable to provide holes 51 for communicating. By doing so, the concrete in both spaces partitioned by the ribs 50 can be integrated by connecting the holes 51 of the ribs 50, and high strength can be obtained.

  Further, the gap formed between the outer cylinder part 300 and the inner cylinder part 301 may be filled with concrete after interposing a metal net or reinforcement. In this way, the strength of the concrete portion 302 is increased, and the strength of the gate body 30 can be further increased.

  In the above embodiment, the flange portion 304 is provided at the lower end portion of the gate body 30, and the plurality of positioning members 305 are extended on the upper surface of the flange portion 304. However, the present invention is not limited to this. For example, the flange portion 304 is provided at the lower end portion of the gate body 30, and a plurality of positioning members 305 are suspended from the lower surface of the top plate 101, and the flange portion raised when the gate body 30 is in the extended state. 304 may abut on positioning members 305... Suspended from the top plate 101. Even if it does in this way, there can exist an effect | action and effect similar to the said embodiment.

  The positioning members 305 are not necessarily required. For example, the gate body 30 may be maintained in the extended state (predetermined extended amount) by the expansion / contraction amount of the air cylinder 20 (switching of air supply). Of course. As described above, when the positioning members 305 are not provided, the guide means 40 may restrict the shake to prevent the gate body 30 from shaking.

  Further, when the positioning members 305 are provided, it is not always necessary to configure the rod-shaped body 305a and the contact body 305b. In this case, the base end portion of the rod-shaped body 305a is screwed into the flange portion 304, and the contact state between the tip of the rod-shaped body 305a and the top plate 101 can be adjusted by rotating the rod-shaped body 305a. Good.

  In the above embodiment, the guide means 40 is constituted by the first guide means 400 and the second guide means 450, the first guide means 400 is fixed to the casing 10, and the second guide means 450 is fixed to the gate body 30. However, the present invention is not limited to this. For example, the second guide means 450 is fixed to the casing 10 so as to be spaced apart from the first guide means 400 in the axial direction. Of course, the second guide means 450 may guide the outer surface of the gate body 30 in the same manner as described above. On the contrary, the first guide means 400 is fixed to the gate body 30 so as to be spaced apart from the second guide means 450 in the axial direction, and similarly to the second guide means 450, the first guide means 400 is fixed. Of course, it is possible to be guided to the peripheral wall 102 of the casing 10. In addition to the first guide unit 400 and the second guide unit 450, another guide unit may be provided. On the other hand, the first guide means 400 and the second guide means 450 can guide the movement of the gate body 30 in the axial direction, and when the gate body 30 is in the extended state, If the force in the direction perpendicular to the axial direction acting on the gate body 30 can be transmitted to the casing 10 at least at two places spaced apart in the central direction, it can be changed as appropriate.

  Furthermore, in the said embodiment, although roller 410,460 was provided in the 1st guide member 401 ... and the 2nd guide member 451 ..., it is not limited to this, It replaces with roller 410,460 and a 1st guide member. 401 ... and the second guide members 451 ... may be provided with slide shoes that are in sliding contact with the surface of the other party.

  Further, the guide means 40 is not limited to the one constituted by a plurality of guide means (first guide means 400, second guide means 450). For example, as shown in FIG. Alternatively, a cylindrical body 500 into which the gate body 30 can be inserted may be provided, and the gate body 30 may be guided by sliding the outer peripheral surface of the gate body 30 on the inner peripheral surface of the cylindrical body 500. In this case, if the length in the axial direction of the cylindrical body 500 is set to a length that can counter the overturning moment acting on the gate body 30 in the extended state, the guide means 40 is configured by one cylindrical body 500. Can do.

  In the above embodiment, the air cylinder 20 is housed in the inner cylinder portion 301 and the rod end RE is connected to the upper end side of the gate body 30. However, the present invention is not limited to this. The gate body 30 may be arranged in series in the axial direction, and the upper end of the air cylinder 20 may be connected to the lower end of the gate body 30. Even in this way, the gate body 30 can be moved up and down by the expansion and contraction of the air cylinder 20. However, since it is essential to increase the size in this way, it goes without saying that it is preferable to use the same method as in the above embodiment.

  In the above embodiment, the casing 10 is provided with the bottom plate portion 103, and the first cylinder mounting portion 109 is provided on the bottom plate portion 103. However, the present invention is not limited to this. For example, the lower end of the peripheral wall 102 of the casing 10 is provided. A bracket that extends in the lateral direction is provided on the lower end side of the peripheral wall 102, and the air cylinder 20 is connected to the bracket, or the first cylinder mounting portion with respect to a foundation F made of concrete. Or may be provided.

  In the above embodiment, the peripheral wall 102 of the casing 10 is formed in a rectangular tube shape. However, the present invention is not limited to this. For example, the peripheral wall 102 is formed in a cylindrical shape or a cylindrical shape having a polygonal cross section. Also good. That is, the casing 10 only needs to include a cylindrical peripheral wall 102 that is continuous in the circumferential direction. Even in this case, the air cylinder 20 and the gate body 30 can be housed, and even if the same guiding means 40 as in the above embodiment is adopted, the air cylinder 20 and the gate body 30 are arranged along the inner surface (wall surface) of the peripheral wall 102 of the casing 10. Thus, the gate body 30 can be guided in the axial direction (vertical direction).

  In the above-described embodiment, the gate body 30 is configured in the appearance cylindrical shape, but is not limited thereto. For example, the gate body 30 is configured in the appearance polygonal column shape, or the outer diameter changes in the axial direction. Alternatively, it may be formed in a column shape. That is, the outer shape of the outer cylinder part 300 can be appropriately changed as long as the gate body 30 has a three-layer structure of the outer cylinder part 300, the inner cylinder part 301, and the concrete part 302. However, if the outer shape of the outer cylinder part 300 is formed to be distorted, the guide means 40 (first guide means 400) cannot guide the outer peripheral surface of the outer cylinder part 300 as in the above-described embodiment. In this case, a plurality of (for example, two) second guide means 450 may be connected to the gate body 30 at intervals in the axial direction.

  In the above embodiment, when the barricade 1 is installed, after excavating a predetermined region and installing the casing 10 in the hole H, the components such as the air cylinder 20 and the gate body 30 are loaded. However, the present invention is not limited to this. The casing 10 in which the components such as the air cylinder 20 and the gate body 30 are preloaded is installed in the excavated hole H, and the concrete of the foundation F is placed around the casing 10. Needless to say, it may be poured. However, in any case, it goes without saying that the piping work is completed before pouring the concrete of the foundation F.

The longitudinal cross-sectional view of the barricade which concerns on one Embodiment of this invention is shown. It is a longitudinal cross-sectional view of the barricade which concerns on the same embodiment, Comprising: The II sectional view of FIG. 1 is shown. It is a partial expanded sectional view of the barricade concerning the embodiment, Comprising: The expanded sectional view of the upper end part of a gate body and a casing is shown. It is explanatory drawing of the guide means of the barricade which concerns on the same embodiment, Comprising: (a) shows the side view of a 1st guide means, (b) shows II-II sectional drawing of (a). It is explanatory drawing of the guide means of the barricade which concerns on the same embodiment, Comprising: (a) shows the side view of a 2nd guide means, (b) shows the III-III sectional drawing of (a). The process figure for demonstrating the installation method of the barricade which concerns on the same embodiment is shown. It is operation | movement explanatory drawing of the barricade which concerns on the same embodiment, Comprising: (a) shows the state which the gate body evacuated in the casing, (b) shows the state which the gate body protruded on the ground. It is explanatory drawing of the gate body of the barricade which concerns on other embodiment of this invention, Comprising: (a) shows a longitudinal cross-sectional view, (b) shows a cross-sectional view. The longitudinal cross-sectional view of the barricade which concerns on other embodiment of this invention is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Barricade, 10 ... Casing, 20 ... Air cylinder (elevating cylinder), 30 ... Gate body, 40 ... Guide means, 100 ... Casing main body, 101 ... Top plate, 102 ... Perimeter wall, 102a, 102b, 102c, 102d ... Wall , 103 ... bottom plate part, 104 ... reinforcing beam, 105 ... joint, 106 ... collar part, 107 ... bolt insertion hole, 108 ... cylindrical member, 109 ... first cylinder mounting part, 109a ... leg part, 109b ... base plate part DESCRIPTION OF SYMBOLS 110 ... Through-hole, 111 ... Opening, 200 ... Screw part, 300 ... Outer cylinder part, 301 ... Inner cylinder part, 302 ... Concrete part, 303 ... Cover, 304 ... Flange part, 305 ... Positioning member, 305a ... Rod shape Body, 305b ... abutting body, 306 ... cover mounting portion, 307 ... second cylinder mounting portion, 308 ... leg portion, 309 ... hole, 310 ... through hole, 311 ... band plate, 31 ... mounting member, 313 ... bolt insertion hole, 400 ... first guide means, 401 ... first guide member, 402 ... first main frame, 402a ... first main facing portion, 402b ... first main connection portion, 403 ... first One sub-frame, 403a ... first sub-opposing portion, 403b ... first sub-connecting portion, 404 ... first shaft hole, 405 ... first shaft body, 410 ... first roller (roller), 450 ... second guide means, 451 ... second guide member, 452 ... second main frame, 452a ... second main counter part, 452b ... second main connection part, 453 ... second sub frame, 453a ... second sub counter part, 453b ... second sub Connection portion, 454 ... second shaft hole, 455 ... second shaft body, 460 ... second roller, B1 ... first push bolt, B2 ... second push bolt, F ... foundation, B ... bolt, N ... nut, P ... Piping, R ... Rod, E ... rod end, S ... cylinder, SE ... cylinder end, C ... vehicle

Claims (7)

  An opening is formed in the top plate that closes one end of the cylindrical peripheral wall, the casing is buried in the ground with the top plate facing up, the elevating cylinder erected in the casing, and the shaft center in the vertical direction A column-shaped gate body which is disposed in the casing so as to extend to the upper end and is connected to an upper end of the elevating cylinder, and extends and retracts to the ground through the opening by extending and contracting the elevating cylinder, and the gate body in the casing And a guide means configured to be capable of guiding in an axial direction in the air cylinder, wherein the elevating cylinder employs an air cylinder, and the gate body includes a metal outer cylinder portion and an outer cylinder. Between the outer tube portion and the inner tube portion so as to be in close contact with or substantially in close contact with each of the metal inner tube portion housed in the tube portion and the inner peripheral surface of the outer tube portion and the outer peripheral surface of the inner tube portion. It is equipped with an interstitial concrete part Barricade to.   A flange-like flange portion is continuously provided on the lower end side of the gate body, and a plurality of positioning members are extended around the gate body on the upper surface of the flange portion so that the gate body protrudes to the ground. The barricade according to claim 1, wherein each positioning member is in contact with a lower surface of the top plate in a state where the gate body is positioned.   3. The barricade according to claim 2, wherein each positioning member includes a rod-shaped body extending upward from the flange portion, and an abutting body provided at an upper end portion of the rod-shaped body so as to be capable of changing a position in an axial direction. .   The barricade according to claim 3, wherein the contact body is screwed to the rod-like body so that the position of the contact body can be changed in the axial direction.   The guide means is configured to be able to transmit a force acting in a direction perpendicular to the axis of the gate body in a state where the gate body is on the ground to the casing at at least two points spaced in the axis direction. The barricade according to at least one of claims 1 to 4.   The guide means is fixed to the casing and is connected to the first guide means for guiding the outer peripheral surface of the gate body in the vicinity of the lower surface of the top plate. The barricade according to claim 5, further comprising second guiding means.   The first guide means is constituted by a plurality of first guide members provided at intervals in the circumferential direction of the gate body, and the second guide means is provided at a plurality of intervals provided in the circumferential direction of the peripheral wall. The first guide member includes a roller that rolls on the outer surface of the gate body, and each second guide member includes a roller that rolls on the inner surface of the peripheral wall. 6. Barricade according to 6.

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