JP2014084570A - Temporary pole for construction site - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary pole for a construction site, which is simply assembled/disassembled and can support various components for safety measure as a firm pole when it is assembled.SOLUTION: A temporary pole for a construction site is constituted of a plurality of pole units 1 in which one pole unit 1 is connected with the other pole unit 1 by inserting an inserting small diameter shaft part 9 provided at the end of one pole unit 1 into a receiving cylindrical part 11 provided at the end of the other pole unit 1. In the inserting small diameter shaft part 9 and the receiving cylindrical part 11, contact parts 18a, 22a, 17a, 21a, where an outside surface of the inserting small diameter shaft part 9 and an inside surface of the receiving cylindrical part 11 are brought into contact to each other when the inserting small diameter shaft part 9 is inserted into the receiving cylindrical part 11, limiting the fitting depth of the outside surface of the inserting small diameter shaft part 9 and the inside surface of the receiving cylindrical part 11 and concentrically positioning both of the surfaces are provided at both axial ends of the inserting small diameter shaft part 9 and at both axial ends of the receiving cylindrical part 11, respectively.

Description

  The present invention relates to a temporary pole for a construction site that can be used to support various members temporarily installed for safety measures or the like in a construction site of a road or a building.

  In road and building construction sites, various members are temporarily installed as a safety measure for passers-by and persons involved in the construction to display and partition dangerous areas. For example, a self-luminous or reflective display is attached to a pole standing on the road and installed as a delineator, and ropes, chains, corn bars, etc. are installed on the road at appropriate intervals. Are arranged along a predetermined area. Patent Document 1 discloses a temporary pole that is used for supporting various members for safety measures, and is a divided pole configured by connecting a plurality of poles for convenient storage and transportation. Or, as described in Patent Document 2, a screw-in structure in which a small-diameter screw shaft portion provided at an end portion of one pole unit is screwed into a screw hole provided at an end portion of the other pole unit, or As described in Patent Document 3, the cylindrical portion formed at the end of the other pole unit is externally fitted to the small-diameter shaft portion provided at the end of one pole unit and rotated, thereby rotating There is known a locking pin structure in which a locking pin protruding in a cylindrical portion is engaged with an L-shaped locking groove formed in the small-diameter shaft portion in a retaining state.

JP 2003-239923 A JP 2005-299165 A JP 2004-108133 A

  The former split-type temporary pole having the screw-in structure can be securely connected without rattling, but has a problem that the manufacturing cost is high and the connection and separation work requires time and effort. The latter split-type temporary pole with a locking pin structure can be easily connected and disconnected, but it must be manufactured with considerable manufacturing accuracy in order to be able to connect firmly without rattling. Since it is necessary to use a packing material to prevent rattling, it is not practical to employ this type of temporary pole.

The present invention proposes a construction site temporary pole capable of solving the conventional problems as described above, and the construction site temporary pole according to the present invention has a relationship with the embodiments described later. For ease of understanding, when the reference numerals used in the description of the embodiment are shown in parentheses, the small-diameter shaft portion (9) for insertion provided at the end of one pole unit (1) is shown. Inserted into the receiving cylindrical part (11, 13) provided at the end of the other pole unit (1, 2, 3, 5a) and locked in a retaining state by the locking means (23) In the temporary pole for construction site consisting of a single pole (1), the small-diameter shaft portion (9) for insertion and the cylindrical portions (11, 13) for receiving the small-diameter shaft portion (9) for insertion When inserted into the cylindrical portion (11), the outer surface of the insertion small-diameter shaft portion (9) and the inner surface of the receiving cylindrical portion (11, 13) are in contact with each other, so that the insertion small-diameter shaft portion (9 ) The abutting portions (18a, 22a, 17a, 21a / 18a, 29a, 17a, 13a) for limiting the fitting depth of the receiving cylindrical portions (11, 13) and concentrically positioning the both are inserted. The small-diameter shaft portion (9) has both end portions in the axial direction and both end portions in the axial direction of the receiving cylindrical portion (11).

  According to the configuration of the present invention, when two poles are connected to each other, the small diameter shaft part for insertion on the side of one pole is simply inserted into the receiving cylindrical part of the other pole, and is inserted. The abutting portions at both axial ends of the small-diameter shaft portion and the abutting portions at both axial end portions of the receiving cylindrical portion are in contact with each other, and the fitting depth between them is limited. The abutment part does not abut in the axial direction and restricts only the fitting depth between the two, but the outer side surface and the inner side surface of each abutment part abut, and the small diameter shaft part for insertion and the receiving cylindrical shape Since both of the parts are positioned concentrically, the small-diameter shaft part for insertion and the cylindrical part for receiving can be fitted concentrically without rattling, so the two poles can be separated from each other. It can be connected firmly without rattling. Of course, three or more poles can be similarly connected to assemble a long pole having a required length.

  As described above, the temporary pole for a construction site according to the present invention has a backlash of the fitting portion by simply inserting the fitting portions (small diameter shaft portion for insertion and receiving cylindrical portion) of the required number of poles. It is possible to assemble a temporary pole with a necessary length that is firm and without any sticking, and can be used to support various safety measures. The locking means for locking the fitting part of the pole unit (small diameter shaft part for insertion and the cylindrical part for the receiving part) in the retaining state is connected to the pole unit with a chain or the like. It may be of the type that is inserted in the diametrical direction over the entire small diameter shaft portion for insertion and the receiving cylindrical portion for fitting the lock pins provided, but the lock pin incorporated in the small diameter shaft portion for insertion is built-in By adopting a locking means of a type that protrudes in the radial direction by the spring of this, a special operation for the locking means is unnecessary when connecting the poles alone, so that the connecting operation is further simplified.

When carrying out the present invention, the insertion small-diameter shaft portion (9), the small-diameter columnar shaft portion (16),
A conical base (17) connecting the pole unit (1a) and the cylindrical shaft portion (16), and the outer diameter of the cylindrical shaft portion (16) is formed so that the outer diameter gradually decreases toward the distal end side. Consists of a conical surface tip (18), the contact portion (17a) on the base side of the small-diameter shaft portion (9) for insertion is composed of the outer peripheral surface of the conical surface base (17), The contact portion (18a) on the distal end side of the small diameter shaft portion (9) can be constituted by the outer peripheral surface of the conical surface distal end portion (18).

In addition, the pole itself for assembling this kind of temporary pole is generally made of synthetic resin, but it is a type of temporary pole that is used by being driven into the ground, H-shaped steel installed horizontally on the ground, Strength when used as a temporary pole with various clamps attached to the lower end of a steel pipe (single pipe) temporarily installed like a handrail at a constant height above the ground, or as a temporary pole with a base plate for installation at the lower end It is conceivable that the lowermost pole unit that needs to be constructed using a steel pipe called a single pipe in the field. In particular, when the lower end of a single pole at the lowermost end is fixed to the base plate made of iron plate by welding, the single pole at the lowermost end needs to be formed of a steel pipe. In such a case, each pole unit is used in the direction in which the receiving cylindrical portion (11) is positioned on the upper end side, and the pole unit (2/3 / 5a) composed of the lowermost steel pipe is used. The abutting portion (13a) on the distal end side of the upper receiving cylindrical portion (13) is constituted by the inner peripheral edge of the upper end of the bottom end pole unit (2/3 / 5a), and the bottom end pole unit (2 / 3 / 5a) The abutting portion (22a) on the base side of the receiving cylindrical portion (13) is a base-inner protruding portion formed on the inner side of the peripheral wall of this bottom end pole unit (2/3 / 5a) It can be constituted by the inner projecting surface of (22). By configuring in this way, the pole at the lowest end (2)
Is configured by simply sizing a steel pipe that is easily available and sufficiently strong, and forming the base inner protrusion (22) to protrude inward on the peripheral wall at a position that is inside a predetermined distance from one end. I can do it.

Further, the receiving cylindrical portion (11) is formed with an enlarged diameter portion (20) at one end of the pole single body (1), and a tip inner projecting portion (21) at a plurality of circumferential positions of the enlarged diameter portion (20). The abutting portion (21a) on the distal end side of the receiving cylindrical portion (11) is configured by an inner projecting surface of the distal inner projection portion (21), and the receiving cylindrical portion (11) The abutting portion (22a) on the base side of the base can be configured by an inner projecting surface of a base inner projecting portion (22) formed on the inner peripheral wall of the pole unit (1). By combining the configuration of the receiving cylindrical portion (11) with the configuration of the small-diameter shaft portion for insertion (9) described above, the dimensional accuracy is slightly lower than the configuration in which the conical surfaces are brought into contact with each other. Both poles can be connected to each other without rattling.

Each pole unit (1) may be used in the direction in which the receiving cylindrical part (11) is located on the lower end side, but the direction in which the receiving cylindrical part (11) is located on the upper end side. When used in the above, the receiving cylindrical portion (11) located at the upper end of the uppermost pole unit (1) is open upward, so it is desirable to close it with an appropriate cap mounting part. . In this case, the mounting part for the cap (46) is attached with the mounting shaft part (47) having the same structure as the small-diameter shaft part for insertion (9) of the pole single body (1). Similarly, various cap attachment parts can be attached to the receiving cylindrical portion at the upper end of the single pole at the uppermost end.

Further, as described above, a diameter-enlarged portion (20) is formed at one end of the pole single body (1), and a tip inner projecting portion (21 ) Is formed, the mounting shaft portion (54) that can be fitted into the enlarged diameter portion (20) at the tip of the receiving cylindrical portion (11) is attached to the cap mounting component (48). The cap mounting part (48) is attached to the mounting shaft part (54), and is engaged with the inner side in the axial direction of the tip inner projecting part (21) formed on the enlarged diameter part (20). It is possible to provide an expanded circumferential portion (55) for retaining. According to this configuration, the diameter-enhancing circumferential circumferential portion (55) provided on the mounting shaft portion (54) of the cap mounting component (48) is provided on the inner projecting surface of the tip inner projecting portion (21). The mounting shaft part (54) of the cap mounting part (48) is placed on the receiving cylindrical part (11) positioned at the upper end of the single pole of the uppermost end (1) until it passes through the top in the axial direction. By simply press-fitting, the cap mounting part (48) can be attached to the upper end of the temporary pole in a state where there is no risk of accidental dropout. Moreover, it is not necessary to additionally use a dedicated locking means for preventing the mounting shaft part (54) of the cap mounting part (48) from coming off from the upper end of the temporary pole, so that the intended purpose can be achieved at low cost. Can be achieved.

Further, on the mounting shaft portion (54) of the cap mounting component (48), the diameter-enlarged circumferential portion (55) for preventing the retaining portion (21) on the tip inner side protruding portion (21) on the receiving cylindrical portion (11) side. ) Is engaged with the inner side in the axial direction of the front end protrusions (21) which are adjacent to each other in the circumferential direction. ) Rotate about the uppermost pole simple substance (1) as an axis.The tip inner protrusions (21) on the uppermost pole simple substance (1) side and the attaching shaft part (48) for attaching the cap mounting part (48) ( If it is configured so that it can be prevented by circumferential contact with the non-rotating protrusion (56) on the 54) side, the cap mounting part (48) is attached to the upper end of the assembled temporary pole. It can be attached in a state in which it does not rotate around and is prevented from coming off. Therefore, this cap mounting component (48) is suitable when using a mounting component that has no meaning unless the circumferential direction is fixed in a predetermined direction, such as a self-luminous display or reflector.

FIG. 1 is a side view for explaining how to assemble and use a temporary pole for a construction site according to the present invention. FIG. 2A is a side view showing a fitting portion at both ends of a single pole, and FIG. 2B is a longitudinal side view of the same. 3A is a cross-sectional view taken along line AA in FIG. 2A, and FIG. 3B is a cross-sectional view taken along line BB in FIG. 2A. 4A is a partially longitudinal side view showing the structure of a fitting portion of a single intermediate pole, and FIG. 4B is a partially vertical view showing the structure of a fitting portion between a bottom end pole made of steel pipe and a pole alone thereon. FIG. 4C is a cross-sectional plan view showing the base inner protrusion of the receiving cylindrical portion of the bottom end pole unit made of steel pipe. FIG. 5A is a side view showing a single clamp mounting pole, and FIG. 5B is a bottom view of the single clamp mounting pole. 6A is a side view showing a state in which a pipe clamp is attached to a clamp mounting pole alone, FIG. 6B is a side view showing a state in which a U-shaped clamp is attached to the clamp mounting pole alone, and FIG. 6C is a clamp view. It is a side view which shows the state which attached the U-shaped clamp to the attachment pole single-piece | unit downward. FIG. 7A is a side view showing a self-luminous display as a cap mounting part, and FIG. 7B is a side view showing a state in which the self-luminous display is attached to the uppermost pole alone. 8A is a side view of a cone bar support cap as a cap mounting part, FIG. 8B is a plan view of the cone bar support cap, and FIG. 8C is a cross-sectional view taken along line XX of FIG. 8A. FIG. 9 is a side view showing a state in which the cone bar support cap is attached to the uppermost pole alone. FIG. 10 is a front view showing a first use state of the temporary pole according to the present invention. FIG. 11 is a front view showing a second use state of the temporary pole according to the present invention. 12A to 12C are front views showing other usage states of the temporary pole of the present invention.

  In FIG. 1, 1 is a single pole made of synthetic resin, 2 is a pole for a pile, 3 is a pole for mounting a clamp, 4 is a temporary pole installed on the ground, etc. with water injected inside to increase the weight The water injection type base is placed at a position, and a vertical hole 4a for temporary pole insertion is provided at the center. Reference numeral 5 denotes a fixing base, and a short pole single unit 5a for connecting a temporary pole is vertically fixedly erected at the center of a base plate 5b fixed to a temporary pole installation position such as on a floor slab by an anchor bolt or the like. .

  The pole unit 1 has a fitting portion 10 having a small-diameter shaft portion 9 for insertion inserted concentrically at one end of the pipe body 1a, and a receiving tubular portion at the other end of the pipe body 1a. 11 is an integrally molded product of synthetic resin in which fitting portions 12 having 11 are connected concentrically. The pile pole unit 2 is provided with a fitting portion 14 having a receiving tubular portion 13 at the upper end of a steel pipe body 2a having substantially the same diameter as the pipe body 1a of the pole unit 1, and the lower end of the steel pipe body 2a is driven in. It is closed by the pointed metal fittings 2b, and it is driven vertically into the ground in a state where the upper end of the steel pipe body 2a is covered with an impact cap 2c. The clamp mounting pole unit 3 is a fitting provided with a receiving cylindrical part 13 which is the same as the fitting part 14 at the upper end of the pile pole unit 2 by a steel pipe having substantially the same diameter as the pipe body 1a of the pole unit 1 The part 14 and the clamp attaching part 15 on the lower end side of the fitting part 14 are integrally formed, and the pipe clamp 6 and the U-shaped clamp 7 are attached to the clamp attaching part 15. The fixed pole 5a of the fixing base 5 is the same as the clamp mounting pole 3 except that the lower clamp mounting portion 15 is omitted. The pipe body 1a is constituted by a steel pipe having substantially the same diameter, and the lower end is welded to the base plate 5b.

  The detailed structure of the single pole 1 will be described with reference to FIGS. 2 and 3. The small-diameter shaft portion 9 for insertion that constitutes the fitting portion 10 includes a cylindrical shaft portion 16 having a diameter smaller than the inner diameter of the pipe body 1a, The columnar shaft portion 16 is formed so that the outer diameter gradually increases toward the tip end side of the cylindrical shaft portion 16 and the conical surface-shaped base portion 17 that is continuously provided on the pipe body 1a side of the columnar shaft portion 16. It is composed of a conical surface tip 18. The receiving cylindrical portion 11 constituting the fitting portion 12 includes a conical enlarged portion 20 formed so that the outer diameter gradually increases at the end of the pipe body 1a, and the circumferential direction of the conical enlarged portion 20 The tip inner projecting portion 21 formed so as to project inward at a plurality of locations (four locations in the illustrated example) at equal intervals, and the peripheral wall of the pipe body 1a at a position corresponding to the base portion of the receiving cylindrical portion 11. It is composed of base inner projecting portions 22 formed so as to project inward at a plurality of locations (four locations in the illustrated example) at regular intervals in the circumferential direction. The tip inner projecting portion 21 and the base inner projecting portion 22 both have an inner side surface in which the substantially central portion of the axial length of the inner surface protrudes inward, and the axial longitudinal sectional shape has a mountain-shaped inner surface. .

  Locking means 23 is built in the small-diameter shaft portion 9 for insertion that constitutes the fitting portion 10 of the single pole 1. The locking means 23 has a short positioning pin 25 projecting outside one end of a leaf spring 24 bent into a V shape, and a lock pin 26 projecting outside the other end of the leaf spring 24. Of the through-pin holes 27a and 27b formed in the diameter direction on the peripheral wall near the tip of the cylindrical shaft portion 16, the positioning pin 25 is fitted in one through-pin hole 27a and the other through-pin hole The small-diameter shaft portion 9 is inserted against the elasticity of the leaf spring 24 so that the lock pin 26 is fitted to 27b. The positioning pin 25 hardly protrudes from the through pin hole 27a, but the lock pin 26 protrudes greatly from the through pin hole 27b and the tip is chamfered into a conical shape. In the receiving cylindrical portion 11 constituting the fitting portion 12 of the pole single body 1, when the small diameter shaft portion 9 for insertion of another pole single body 1 is inserted into the receiving cylindrical portion 11, the small diameter shaft for insertion Locking holes 28 that can be fitted with the tip ends of the lock pins 26 protruding from the through-pin holes 27b of the portion 9 are provided at a plurality of locations (four locations in the illustrated example) at regular intervals in the circumferential direction.

  The pile pole unit 2 made of a steel pipe, the clamp mounting pole unit 3, and the receiving cylindrical part 13 constituting the fitting unit 14 of the pole unit 5 a of the fixing base 5 are fitted to the pile pole unit 2. As shown in FIG. 4B illustrating the joint portion 14, unlike the receiving cylindrical portion 11 of the pole unit 1, the tip is the same as the cut end of the steel pipe, and the conical diameter-expanded portion 20 and the tip inner protrusion The part 21 is not provided. Further, in place of the base inner projecting portion 22 provided on the receiving cylindrical portion 11 of the pole single body 1, two base inner projecting portions 29 having a substantially semicircular arc shape along the circumferential direction are formed by pressing. doing.

  As shown in FIG. 5, the clamp mounting portion 15 of the clamp mounting pole unit 3 is fitted with a clamp mounting hole 30 provided so as to penetrate the peripheral wall of the clamp mounting portion 15 (the peripheral wall of the steel pipe) in the diametrical direction. The cover plate 31 welded so as to close the opening opposite to the side where the joint portion 14 is provided is provided with a through screw hole 32 provided concentrically with the clamp mounting portion 15 (concentric with the steel pipe). The lid plate 31 may completely close the entire opening of the steel pipe constituting the clamp mounting portion 15, but in order to drain water from the inside of the clamp mounting pole unit 3, as shown in the figure. It is desirable to use a belt-like plate narrower than the inner diameter of the steel pipe for the lid plate 31 so that openings communicating with the inside of the steel pipe remain on both sides of the lid plate 31.

  As shown in FIGS. 6A to 6C, the pipe clamp 6 and the U-shaped clamp 7 are attached to the clamp attaching portion 15 of the clamp attaching pole single body 3 having the above-described configuration. The pipe clamp 6 is supported at one end of a base member 33 so that one end of a pressing member 34 can be freely opened and closed by a support shaft 35, and at the other end of the base member 33, a screw shaft that is pivotally supported by a support shaft 36. 37 and a nut 38 that is fitted to the screw shaft 37 and is well known in the art, and the nut 38 in a state in which the screw shaft 37 is engaged with a bifurcated portion formed at the free end of the presser member 34. In this tightening operation, the presser member 34 is pressed toward the base member 33, and the steel pipe (single pipe) is held between the base member 33 and the presser member 34. The pipe clamp 6 is provided on the clamp mounting portion 15 of the clamp mounting pole unit 3 by using a through hole provided in the base member 33 and a bolt 39 inserted outward from the inside of the base member 33. It is attached to the lower end of the clamp mounting pole unit 3 by being screwed and fastened to the through screw hole 32.

  The U-shaped clamp 7 includes arm portions 41a and 41b that are bent in parallel to each other from both ends of the base portion 40, and a front end pressing plate 42a of a fastening bolt 42 that is threaded through one arm portion 41a. This is a conventionally known one that can hold and fix a plate-like member between the other arm portion 41b. Thus, as shown in FIGS. 6B and 6C, the base member 40 and the arm portion 41b are provided with through screw holes 43 and 44, respectively, which are provided in the clamp mounting portion 15 of the clamp mounting pole unit 3. The bolt 45 inserted horizontally in the clamp mounting hole 30 is screwed and fastened to a through screw hole 43 provided in the base member 40, so that the clamp mounting pole single body 3 is horizontally horizontal. The U-shaped clamp 7 can be mounted in an opening direction, and the bolt 45 is screwed and fastened to a through screw hole 44 provided in the arm portion 41b, thereby being vertically downward with respect to the clamp mounting pole unit 3 The U-shaped clamp 7 can be attached in such a direction as to open at the center. Of course, when attaching the U-shaped clamp 7 to the clamp mounting pole unit 3, the U-shaped clamp 7 can be rotated around the bolt 45 and the opening direction of the U-shaped clamp 7 can be appropriately adjusted and changed.

  A self-luminous display 46 as a cap mounting part shown in FIG. 7A includes a self-luminous display unit 47 having a small-diameter shaft portion 9 for insertion which is the same as the small-diameter shaft portion 9 for insertion of the pole unit 1. The display unit 46 is integrally provided below the lower pedestal 46a. A cone bar support cap 48 as a cap mounting part shown in FIG. 8 is configured such that the ring 50 just fits on a pedestal 51 having a diameter on which the ring 50 connected to the end of the cone bar 49 can be placed. A circular protrusion 52 having an outer diameter to be obtained is concentrically connected, and a plurality of retaining protrusions 53 of the ring 50 are arranged at equal intervals in the circumferential direction around the upper end of the circular protrusion 52 (in the illustrated example, 4 The mounting shaft portion 54 is continuously provided downward from the center position of the bottom portion of the pedestal portion 51. The mounting shaft portion 54 protrudes to the inside of the conical diameter expanding portion 20 when the mounting shaft portion 54 is press-fitted into the conical diameter expanding portion 20 of the fitting portion 12 of the pole unit 1. An outer diameter-enlarged circumferential portion 55 for retaining the outer diameter that passes through the top portion of the inner protruding portion 21 while expanding the diameter and engages the inner side of each tip inner protruding portion 21 in the axial direction, and a tip adjacent in the circumferential direction A detent projection 56 that fits between the inner protrusions 21 is provided. The cone bar support cap 48 including the mounting shaft portion 54 is a hollow shape in which only the lower end of the mounting shaft portion 54 is opened, and is an integrally molded product made of a synthetic resin.

  When connecting the single poles 1 shown in FIGS. 1 to 3, the fitting part 10 of the other pole single 1 is inserted into the receiving cylindrical part 11 of the fitting part 12 of the single pole single 1. The insertion of the small-diameter shaft portion 9 into the receiving cylindrical portion 11 is performed by inserting the small-diameter shaft portion 9 for insertion into the conical enlarged diameter portion 20 in the receiving cylindrical portion 11 as shown in FIG. 4A. The outer surface of the intermediate height of the conical surface-shaped base portion 17 of the small-diameter shaft portion 9 for insertion is brought into contact with each inner-end projection portion 21 of the insertion portion, and the small-diameter shaft for insertion is inserted into each base-side inner protrusion portion 22 of the receiving cylindrical portion 11. This is limited to the depth with which the outer surface of the intermediate height at the conical end 18 of the portion 9 abuts.

  Accordingly, the two contact portions in the axial direction between the fitting portion 12 on the one pole unit 1 side and the fitting portion 10 on the other pole unit 1 side are conical surface tips of the small-diameter shaft portion 9 for insertion. The abutting portion 18a constituted by the outer side surface of the portion 18, the abutting portion 22a constituted by the inner top surface of each base inner protruding portion 22 of the receiving cylindrical portion 11, and the conical surface of the small-diameter shaft portion 9 for insertion An abutting portion 17a constituted by an outer surface of the base 17 and an abutting portion 21a constituted by an inner top surface of each tip inner projecting portion 21 in the conical enlarged diameter portion 20 of the receiving cylindrical portion 11, Of these two upper and lower contact portions 18a, 22a and 17a, 21a, the inner contact portions 18a, 17a have a conical surface. Thus, the small diameter shaft 9 for insertion on the other pole unit 1 side is automatically aligned, and both are concentric. It is.

  As described above, when the small insertion shaft portion 9 is inserted into the receiving cylindrical portion 11 in order to connect the two pole single bodies 1 to each other, the locking means 23 of the interior is locked to the small insertion shaft portion 9. Since the pin 26 comes into contact with the upper end of the receiving cylindrical portion 11 (the open end of the conical diameter-enlarged portion 20), the lock pin 26 is pushed by the fingertip against the elasticity of the leaf spring 24, and the lock pin 26 is It is made to enter inside the receiving cylindrical part 11. In this state, when the insertion small-diameter shaft portion 9 on the pole unit 1 side is inserted to the above limit depth, the axial height of the lock pin 26 on the insertion small-diameter shaft portion 9 side and the locking on the receiving tubular portion 11 side are fixed. The hole 28 is configured so that the axial height thereof substantially coincides. Accordingly, the lock pin 26 and the locking hole are formed by relatively rotating the both pole single bodies 1 around the shaft center in a state in which the insertion small-diameter shaft portion 9 is inserted into the receiving cylindrical portion 11 to the limit depth. 28, and the tip of the lock pin 26, which is restored by the elastic force of the leaf spring 24, automatically fits into one of the locking holes 28 on the receiving tubular portion 11 side as shown in FIG. 4A. Can be fitted. As a result, the pile pole unit 2 and the pole unit 1 are locked in the connected state.

  When the pole unit 1 is connected to the pole unit 2 for the pile, the pole unit 3 for clamping, and the pole unit 5a of the fixing base 5, it is made of a steel pipe constituting the fitting portion 14 of these pole units 2, 3, 5a. The small-diameter shaft portion 9 for insertion of the pole unit 1 is inserted into the receiving cylindrical portion 13. In this case, the small-diameter shaft portion 9 for insertion is inserted into the peripheral edge of the upper end of the tubular portion 13 made of steel pipe. The outer surface of the intermediate height in the conical surface-shaped base portion 17 abuts, and the intermediate height in the conical surface tip portion 18 of the small-diameter shaft portion 9 for insertion into the base-inner protruding portion 29 of the receiving tubular portion 13 made of steel pipe. It is limited to the depth with which the outer surface of the abuts. In this state, the two abutting portions in the axial direction between the fitting portion 14 on the pole simple substance 2, 3, 5a side and the fitting portion 10 on the pole simple substance 1 side are conical surfaces of the small-diameter shaft portion 9 for insertion. The abutting portion 18a constituted by the outer side surface of the cylindrical tip 18 and the abutting portion 29a constituted by the inner top surface of the base inner protruding portion 29 of the receiving cylindrical portion 13 and the cone of the small-diameter shaft portion 9 for insertion. The contact portion 17a formed by the outer surface of the planar base portion 17 and the contact portion 13a formed by the inner peripheral edge at the upper end of the receiving tubular portion 13 are formed. 13a, the inner contact portions 18a and 17a are conical surfaces. Therefore, the insertion small-diameter shaft portion 9 on the pole unit 1 side with respect to the receiving cylindrical portion 13 on the pole unit 2, 3 and 5a side. Are self-aligned and both are concentrically regulated. In this state, the lock pin 26 of the locking means 23 housed in the small-diameter shaft portion 9 for insertion is fitted into one of the locking holes 28 on the receiving cylindrical portion 13 side, and the poles 2, 3, 5a The pole unit 1 can be locked in the above-mentioned connection state in the same manner as when the pole units 1 are connected.

  As described above, the temporary pole for a construction site according to the present invention includes a plurality of poles 1 alone, or one or a plurality of poles 1 and a pile pole 2, a clamp mounting pole 3, and a water injection type base. 4. The method of using the assembled temporary pole will be described in combination with mounting means such as the fixing base 5. A plurality of temporary poles 60 shown in FIG. The pole single body 1 is connected in a direction in which the receiving cylindrical portion 11 is located at the upper end. A temporary pole 61 shown in FIG. 11 is configured by connecting only a plurality of poles 1 in a direction in which the receiving cylindrical portion 11 is positioned at the upper end, and is positioned at the lower end of the temporary pole 61. The small-diameter shaft portion 9 for insertion is inserted into the vertical hole 4a of the water injection type base 4 placed at the temporary pole installation position to be self-supporting. A temporary pole 62 shown in FIG. 11 connects a plurality of poles 1 in such a direction that the receiving cylindrical portion 11 is positioned at the upper end, and a small diameter for insertion at the lower end of the lowermost pole 1. The shaft portion 9 is assembled by being inserted into the receiving cylindrical portion 13 provided in the pole single body 5a of the fixing base 5 placed and fixed at the temporary pole installation position and locked by the locking means 23.

  As shown in FIG. 1, the clamp mounting pole unit 3 in which the pipe clamp 6 and the U-shaped clamp 7 are mounted on the clamp mounting portion 15 as described above is a steel pipe 63 installed horizontally as shown in FIG. The clamp mounting pole unit 3 is attached to the vertical direction through the pipe clamp 6 or the horizontal plate portion 64a and the vertical plate portion 64b of the H-shaped steel 64 placed horizontally through the U-shaped clamp 7 Thus, the clamp mounting pole unit 3 can be mounted and used in a vertical direction. In this case, as shown in FIG. 12A and FIG. 12B, only the clamp mounting pole 3 can be used as the temporary poles 65 and 66. 1 may be connected to form temporary poles 67 to 69 having a required length (height). The pole unit 1 is connected to the clamp mounting pole unit 3 by connecting the pole mounting unit 13 of the pole mounting unit 3 in the vertical direction to the cylindrical unit 13 for receiving the pole unit. The connection can be performed in the same manner as the connection of the pole single body 1 to the pile pole single body 2 in which the small-diameter shaft portion 9 for insertion at the lower end is inserted and locked by the locking means 23.

  The temporary poles 60 to 62 and 65 to 69 assembled as described above have the receiving cylindrical portion 11 or the receiving cylindrical portion 13 located at the upper end thereof opened upward. As shown in FIG. 2, the receiving cylindrical portion 11 or the receiving cylindrical portion 13 can be closed by the self-luminous display 46 or the cone bar support cap 48. As described with reference to FIG. 7A, the self-luminous display 46 includes the mounting shaft portion 47 having the same structure as the fitting portion 10 having the small-diameter shaft portion 9 for inserting the pole unit 1. The mounting shaft portion 47 of the self-luminous display 46 is inserted into the receiving cylindrical portion 11/13 at the upper end of the pole single body 1 or the clamp mounting pole single body 3 so that the mounting shaft portion 47 has a lock. What is necessary is just to lock by the means 23 (refer FIG. 7B). In this case, the self-luminous display 46 is fixed in a predetermined direction in the circumferential direction by the locking means 23 to the pole unit 1 or the clamp mounting pole unit 3 directly below.

  9 and 11, when the cone bar support cap 48 is used as a temporary pole cap, the mounting shaft portion 54 of the cone bar support cap 48 is attached to the upper end of the pole unit 1 directly below. As described above, the shaft of the mounting shaft portion 54 between the diameter-enlarged circumferential portion 55 for retaining and the base inner projecting portion 22 on the receiving tubular portion 11 side is inserted into the receiving tubular portion 11. Due to the engagement in the direction, the cone bar supporting cap 48 is prevented from coming off, and the engagement in the circumferential direction between the rotation preventing projection 56 of the mounting shaft portion 54 and the base inner side protruding portion 22 on the receiving cylindrical portion 11 side. The cone bar support cap 48 can be prevented from rotating. Of course, instead of the self-luminous display 46 and the cone bar support cap 48, a cap that can be put on the receiving cylindrical portion 11/13 at the upper end of the temporary pole can be used, or the mounting shaft portion 47 can be used. / 54 with a reflector, rope guide, chain hook, signboard bracket, etc. attached to the upper end.

  The temporary poles 60 to 62 and 65 to 69 assembled as described above and supported vertically at a predetermined position are stretched by rope 70 (or chain not shown) or a sign as shown in FIG. As shown in FIG. 11, the temporary pole having the cone bar support cap 48 attached to the upper end is erected at intervals corresponding to the length of the cone bar 49. It can also be used as a means of erection. Of course, as illustrated in FIG. 12, a temporary pole provided with a self-luminous display 46 or a reflector instead of the self-luminous display 46 arranges the self-luminous display 46 or a reflector or the like at a predetermined position. It can be used as a means for In FIG. 10, a rope (or chain not shown) 70 or a signboard 71 is attached to the connection point of the pole single 1 of the temporary pole 60, but a sign 71 is attached. In order to enable the attachment, as shown in FIG. 4A, a plate-like attachment member 72 is attached to a rope locking plate (or chain locking plate) 70a for locking the rope (or chain) 70 or a sign bracket 71a. The plate-like mounting member 72 is externally fitted to the pole unit 1 above the insertion small-diameter shaft 9 and the upper end of the receiving cylindrical part 11 of the lower pole unit 1 (conical diameter expansion). The upper end of the portion 20 may be supported.

  The temporary pole for the construction site according to the present invention can be easily assembled and disassembled, and when assembled, the temporary pole as a single pole-shaped member is not different from the temporary pole for various safety measures. It can be used to support other parts.

DESCRIPTION OF SYMBOLS 1 Pole single-piece | unit 2 Pile single-piece | unit 3 Clamp single-piece | unit pole 4 Water injection type base 5 Fixing base 6 Pipe clamp 7 U-shaped clamp 9 Small diameter shaft part for insertion 10, 12, 14 Fitting part 11, 13 Tube shape for receiving Part 13a, 17a, 18a, 21a, 22a, 29a Contact part 15 Clamp mounting part 16 Columnar shaft part 17 Conical surface base part 18 Conical surface tip part 20 Conical diameter enlarged part 21 Tip inner side protrusion part 22 Base part inner part protrusion Part 23 Locking means 24 Leaf spring 25 Positioning pin 26 Lock pin 28 Locking hole 29 Base inner protrusion 46 Self-luminous display 47, 54 Mounting shaft part 48 Cone bar support cap 49 Cone bar 50 Rings 60 to 62, 65-69 Temporary pole 63 Steel pipe 64 H-section steel 70 Rope (or chain)
71 signboard

Claims (9)

  A small diameter shaft part for insertion provided at the end of one pole unit is inserted into a receiving cylindrical part provided at the end of the other pole unit, and is locked in a retaining state by a locking means. In the temporary pole for construction site composed of a plurality of poles, the small diameter shaft portion for insertion and the cylindrical portion for receiving are inserted into the receiving cylindrical portion when the small diameter shaft portion for insertion is inserted into the receiving cylindrical portion. The abutting portion that the outer surface of the shaft portion and the inner surface of the receiving cylindrical portion are in contact with each other to limit the fitting depth between the small-diameter shaft portion for insertion and the receiving cylindrical portion, and to position both of them concentrically Is a temporary pole for a construction site provided at both axial ends of the small-diameter shaft portion for insertion and both axial ends of the receiving tubular portion.   The small-diameter shaft portion for insertion has a small-diameter cylindrical shaft portion, a conical base that connects the single pole and the cylindrical shaft portion, and an outer diameter that gradually decreases toward the distal end of the cylindrical shaft portion. The abutting portion on the base side of the small-diameter shaft portion for insertion is composed of an outer peripheral surface of the conical surface-shaped base portion, and the tip portion on the distal end side of the small-diameter shaft portion for insertion is formed. The construction site temporary pole according to claim 1, wherein the contact portion is configured by an outer peripheral surface of the conical tip portion.   Each pole unit is used in the direction in which the receiving cylindrical part is located on the upper end side, and the lowermost pole unit unit is made of a steel pipe, and the abutment on the tip side of the upper receiving cylindrical part The lower end pole unit is configured by the inner peripheral edge of the upper end of the bottom end pole, and the contact portion on the base side of the receiving cylindrical portion of the bottom end pole unit is a base formed on the inner peripheral wall of the bottom end pole unit The temporary pole for construction sites of Claim 1 or 2 comprised by the inner side protrusion surface of the inner side protrusion part.   The temporary pole for construction sites according to claim 3, wherein the pole at the lowermost end made of the steel pipe constitutes a pile for driving into the ground having a driving tip at the lower end.   The temporary pole for construction sites according to claim 3, wherein the lowermost pole unit made of the steel pipe has a clamp or an installation base plate attached to another temporary member at a lower end portion.   An enlarged diameter portion is connected to the outer end of the receiving cylindrical portion, and the abutting portion on the distal end side of the receiving cylindrical portion protrudes at the inner end of the tip formed at a plurality of locations in the circumferential direction of the enlarged diameter portion. The contact portion on the base side of the receiving cylindrical portion is formed by an inner protrusion surface of a base inner protrusion formed on the inner peripheral wall of the pole unit. Or the temporary pole for construction sites described in 2.   Each pole unit is used in the direction in which the receiving cylindrical part is located on the upper end side, and a cap mounting part is attached to the receiving cylindrical part of the uppermost pole unit. The temporary pole for construction sites according to claim 6, wherein a mounting shaft portion having the same structure as that of the small-diameter shaft portion for insertion of a single pole is attached.   Each pole unit is used in the direction in which the receiving cylindrical part is located on the upper end side, and the mounting cylindrical part is fitted into the receiving cylindrical part in the receiving cylindrical part of the uppermost pole unit. A cap mounting part having a portion is attached, and the mounting shaft portion is engaged with the inner side in the axial direction of each tip inner protrusion formed on the enlarged diameter portion of the receiving tubular portion. The temporary pole for construction sites according to claim 6, wherein a stop enlarged circumferential portion is provided. When the mounting shaft portion of the cap mounting part is engaged with the axially inner side of each tip inner projecting portion on the cylindrical portion side for receiving the enlarged diameter circumferential portion for retaining, the circumferential direction is increased. The temporary pole for construction sites according to claim 8, wherein a rotation-preventing protrusion that fits between the adjacent tip end inner protruding portions is protruded.

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