JP5748618B2 - Temporary staircase and stopper used for it - Google Patents

Description

  The present invention relates to a temporary staircase having a variable inclination angle and a stopper for a temporary staircase that is used in the temporary staircase and restricts the inclination movement.

  In a construction site where a building such as a condominium or an office building is constructed, temporary stairs are used to ascend and descend the upper and lower floors of a structure such as a building or a temporary scaffold. The height of the upper and lower floors for going up and down is different in structures such as temporary scaffolds, so in order to install the same temporary staircase in various structures, the inclination angle is set according to the height of the upper and lower floors. It needs to be able to change. In order to keep the tread plate always horizontal even if the inclination angle of the temporary staircase is changed, as described in Patent Document 1, a total of four inclined struts, each having two left and right inclined struts, respectively, A temporary staircase is formed by a plurality of treads that are pin-coupled to the front and rear inclined struts at the left and right ends.

JP-A-6-323003

  As described above, the temporary staircase having a variable inclination angle is obtained by changing the inclination angle so that the same temporary staircase corresponds to the steps at a plurality of locations where the steps on the lower floor and the upper floor are different, and the step board is used. It can be installed while being held horizontally. Temporary staircases with variable tilt angles have these advantages, but the treads are pivotally attached to the columns by pins, so that the temporary staircases can be firmly fixed at the installation location. It is necessary to fix the inclined strut to the lower floor and the upper floor. For this purpose, a hook for connecting the upper end of the inclined support column to a member on the upper floor is provided.

  However, all the footboards are pin-coupled to the left and right columns so that they can rotate freely. Therefore, even if the upper end of the inclined column is connected to the upper floor member by the hook, the worker goes up and down the temporary staircase. It is inevitable that the temporary stairway will shake.

  An object of the present invention is to prevent the occurrence of shaking of the temporary staircase by restricting the tilting movement of the temporary staircase having a variable inclination angle.

  The temporary staircase of the present invention includes a first inclined column pair having two inclined columns that are parallel to each other, and a second inclined column pair having two inclined columns that are parallel to each other and parallel to the inclined column. , One end is pivotally coupled to the two inclined columns of the first inclined column pair by a pin and the other end is rotated to the two inclined columns of the second inclined column pair A staircase body having a plurality of step plates that are freely coupled by pins and having a variable inclination angle, an engagement recess that engages with the pin is formed at the tip, and an abutment that contacts the pin is the engagement recess And an engagement member formed at the base end portion with a detachable opening formed at the base end portion and communicating with the contact portion, and one end portion at the base end portion of the engagement member Are connected to each other, a connecting piece connected to the other end of the connecting bar, and facing the connecting piece And a stopper member having a fastening piece provided with a screw member for fastening the inclined column and a fastener attached to the inclined column, and the stopper member is attached to one of the inclined column pairs. When mounting, the engaging recess is directed upward with respect to the connecting bar, and the pin is engaged with the engaging recess, and when the stopper member is mounted on the other pair of inclined columns, the engaging recess is connected. The stopper member having the same structure can be mounted on both of the inclined strut pairs by bringing the pin into contact with the contact portion with the bar facing downward.

  The temporary staircase of the present invention has first and second stopper members having the same structure, and the engaging recess of one stopper member faces upward with respect to the connecting bar. The pin is engaged and attached to one of the inclined strut pairs, the engaging recess of the other stopper member is directed downward with respect to the connecting bar, the pin is brought into contact with the contact portion, and the other It mounts on the said inclined support | pillar pair, It is characterized by the above-mentioned. The temporary staircase of the present invention is characterized in that the fastener is fastened to the inclined column so that the screw member is outside the inclined column. The temporary staircase of the present invention is characterized in that the connecting piece of the fastener is rotatably connected to the connecting bar.

  The stopper for a temporary staircase of the present invention includes a first inclined strut pair having two inclined struts parallel to each other, and a second inclined strut having two inclined struts parallel to each other and parallel to the inclined struts. A pair of struts, one end of which is pivotally coupled to the two inclined struts of the first inclined strut pair by a pin and the other end is the two inclined struts of the second inclined strut pair A temporary staircase stopper for restricting the inclination movement of the temporary staircase having a plurality of tread plates coupled to each other by a pin so that the inclination angle is variable, and an engagement recess for engaging with the pin is provided A contact portion that is formed at the distal end portion and is in contact with the pin is formed at the proximal end portion so as to face the engagement recess, and a detachable opening that communicates with the contact portion is formed at the proximal end portion. And a connecting rod having one end connected to the base end of the engaging member. And a connecting piece connected to the other end of the connecting bar, and a fastening piece provided with a screw member facing the connecting piece and fastening the inclined column, and is attached to the inclined column And when the stopper member is attached to one of the inclined strut pairs, the engaging recess is directed upward with respect to the connecting bar, and the pin is engaged with the engaging recess. When the stopper member is attached to the other pair of inclined struts, the engaging recess is directed downward with respect to the connecting bar, and the pin is brought into contact with the contact portion, whereby the stopper member having the same structure is provided. It can be attached to any of both of the inclined strut pairs.

  The stopper for a temporary staircase according to the present invention is provided with the stopper member mounted on the pair of inclined struts on the left side of the tread plate on which an operator ascends and descends with the engaging recess facing upward with respect to the connecting rod. The stopper member is mounted on the right inclined column pair with the engaging recess facing downward with respect to the connecting bar. The stopper for temporary staircase of the present invention is characterized in that the fastener is fastened to the inclined strut so that the screw member is outside the inclined strut. The stopper for temporary staircase of the present invention is characterized in that the connecting piece of the fastener is rotatably connected to the connecting bar.

  If a stopper member is attached to the staircase body with a variable inclination angle, the rotation of the tread plate with respect to the inclined column is restricted, so the temporary staircase is firmly fixed and fastened, and the operator descends the temporary staircase. When doing so, it is possible to prevent the footboard from shaking. Thereby, the worker can safely go up and down the temporary staircase.

  Since the same stopper member can be mounted on either the left or right side of the temporary staircase, the same type of stopper can be mounted on either the left or right side of the temporary staircase, and multiple types of stoppers are manufactured corresponding to the left and right sides of the temporary staircase. Therefore, the stopper member can be easily attached to the temporary staircase, and the manufacturing management of the stopper member can be easily performed.

It is a perspective view which shows the temporary staircase of the state with which the stopper was mounted | worn. (A) is a perspective view which shows the stopper member with which the left side was mounted | worn in FIG. 1, (B) is a perspective view which shows the stopper member with which the right side was mounted | worn in FIG. (A) is an enlarged front view of the stopper member viewed from the direction of arrow A in FIG. 2 (A), and (B) is an enlarged view of the stopper member viewed from the direction of arrow B in FIG. 2 (B). FIG. It is a top view of the stopper member shown by FIG. 2 (B).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The temporary staircase of the present invention has a staircase body 10 shown in FIG. The staircase body 10 has two inclined columns 11a and 11b on the front side and the back side parallel to each other, and a first inclined column pair 11 shown on the left side in FIG. It has two inclined support columns 12a, 12b on the side and a second inclined support column pair 12 shown on the right side in FIG. A plurality of quadrilateral treads 13 are attached to the left and right inclined column pairs 11 and 12 in parallel with each other. Each of the footboards 13 has one end, which is the left side in FIG. 1, pin-connected to the front inclined column 11a by a front pin 14a, and is pin-connected to the rear inclined column 11b by a rear pin 14b. . Each of the footboards 13 has the other end, which is the right side in FIG. 1, pin-connected to the front inclined column 12a by the front pin 15a, and is pin-connected to the rear inclined column 12b by the rear pin 15b. Yes.

  Note that the pin 14a protruding from the left side of the tread board 13 and the pin 15a protruding from the right side may be formed by one bar, and the pin 14a and the pin 15b are similarly formed by one bar. You may make it form with material.

  In this way, the staircase main body 10 is formed with a parallelogram link by two inclined struts 11a, 11b parallel to each other and a plurality of stepping plates 13 parallel to each other, and similarly, the inclined struts 12a parallel to each other. , 12b and the tread plate 13 form a parallelogram link. As a result, when the staircase body 10 is spanned between the lower floor and the upper floor of the structure (not shown), each of the treads 13 is in a horizontal state regardless of the angle of the inclined columns 11a to 12b. . Therefore, the worker can easily go up and down between the lower floor and the upper floor using the tread 13 in the horizontal state.

  As described in Patent Document 1 described above, a grounding plate may be attached in parallel to the tread plate 13 at the lower end of each of the inclined columns 11a to 12b. In addition, hooks that are hooked on members on the upper floor may be provided at the upper ends of the inclined columns 11b and 12b on the back side, and handrails may be provided on the left and right inclined column pairs 11 and 12.

  One stopper member 19 is attached to each of the left and right inclined column pairs 11 and 12. A stopper member 19 is mounted on the left inclined column pair 11 as shown in FIG. 2A, and a stopper member 19 is mounted on the right inclined column pair 12 as shown in FIG. It is attached downward.

  As shown in FIG. 2, the stopper member 19 is an inclined column whose front and rear are reversed with respect to the inclined column provided with the engaging member 20 mounted on the pin and the pin mounted with the engaging member 20. And a fastener 30 to be attached. The engaging member 20 and the fastener 30 are connected to each other by a connecting bar 40 having one end connected to the engaging member 20 and the other end connected to the fastener 30. The connecting bar 40 is connected to the proximal end portion of the engaging member 20.

  The engaging member 20 is made of a substantially rectangular plate material as a whole, and a long hole 21 extending in the longitudinal direction is formed in the engaging member 20. Of the long hole 21, the distal end side of the engagement member 20 is an engagement concave portion 22 into which a pin enters, and the proximal end side of the long hole 21 is an abutting portion 23 facing the engagement concave portion 22. . The engaging recess 22 has a depth larger than the outer diameter of the pin. On the base end side of the engaging member 20, an opening 24 is formed that extends in a lateral direction with respect to the long hole 21 and communicates with the long hole 21. The opening 24 communicates with the contact part 23. Yes. One end of the connecting bar 40 is connected to the base end side of the engaging member 20 so as to be positioned outside the contact portion 23. The longitudinal dimension of the long hole 21 is longer than the outer diameter of the pin, and the lateral dimension substantially corresponds to the outer diameter of the pin. The engaging member 20 is formed of a plate material in the case of illustration, but is not formed of a plate material, but an L-shape having a long hole 21 and an opening 24 as illustrated by bending a rod. The engaging member 20 may be formed of a member having a shape space.

  On the other hand, the fastener 30 has a connecting piece 31 and a fastening piece 32 opposite to the connecting piece 31, and the connecting piece 31 and the fastening piece 32 are connected by a spacer piece 33. The connecting piece 31, the fastening piece 32, and the spacer piece 33 are formed by bending a metal plate material into an overall U shape as shown in the figure. The gap dimension between the connecting piece 31 and the fastening piece 32 is set larger than the thickness dimension of the inclined column. A reinforcing portion 34 is provided on the outer peripheral surface of the fastener 30, and a bolt 35 as a screw member is screwed to the fastening piece 32 through the reinforcing portion 34, and the tip of the bolt 35 is shown in FIG. 4. As a result, the inner surface of the fastening piece 32 protrudes. The fastener 30 is fastened to the inclined column by the bolt 35. When the bolt 35 is rotated, a spanner is hooked on the hexagonal head of the bolt 35. Instead of the bolt 35, a thumbscrew provided with a member for manual operation at the head portion is used as a screw member. It may be used.

  The connecting piece 31 is rotatably connected to the connecting bar 40 by a connecting pin 36. Thereby, when attaching the stopper member 19 to the inclined column pair, the connecting rod 40 is rotated at an arbitrary angle with respect to the fastener 30 in a state where the spacer piece 33 of the fastener 30 is in contact with the inclined column. be able to.

  As shown in FIG. 1, in order to mount the stopper member 19 to the left inclined column pair 11, the stopper member 19 is positioned upward, that is, the engaging member 20 is connected to the connecting rod 40 as shown in FIG. As the upper side, the pin 14b attached to the inclined column 11b on the back side is engaged in the engagement recess 22. On the other hand, the fastener 30 is attached to the inclined column 11a on the front side, and the bolt 35 is fastened to the inclined column 11a. At this time, the fastener 30 is attached to the inclined column 11a so that the bolt 35 protrudes outside the staircase body 10.

  In order to attach the other stopper member 19 to the right-hand inclined column pair 12, the stopper member 19 is turned upside down as shown in FIG. 2A, as shown in FIG. 2B. That is, the pin 15 b attached to the back-side inclined column 12 b is brought into contact with the contact portion 23 with the downward posture, that is, the engagement member 20 positioned below the connecting rod 40. On the other hand, the fastener 30 is attached to the inclined column 12a on the front side, and the bolt 35 is fastened to the inclined column 12a. At this time, the fastener 30 is attached to the inclined column 11a so that the bolt 35 protrudes outside the staircase body 10.

  As described above, when the stopper member 19 is attached to the staircase body 10, the inclination movement of each of the inclined struts 11 a to 12 b is restricted, so that the staircase body 10 can be shaken when the operator moves up and down the staircase body 10. Can be prevented. Thereby, the operator can go up and down the staircase body 10 safely. FIG. 1 shows the case where one stopper member 19 is attached to each of the left and right inclined strut pairs 11 and 12 of the variable tilt angle staircase body 10, but it is attached to one of the left and right inclined strut pairs 11 and 12. If it does so, the inclination movement of the staircase main body 10 can be controlled.

  The stopper member 19 has a proximal end portion of the engaging member 20 attached to one end portion of the connecting rod 40, the engaging member 20 protrudes laterally with respect to the connecting rod 40, and the engaging member 20 has a distal end. An engaging recess 22 is provided on the part side. Accordingly, when the stopper member 19 is engaged with the engaging recess 22 with the engaging recess 22 facing upward as shown in FIG. 2A, the stopper member 19 is prevented from being detached from the pin. On the other hand, as shown in FIG. 2 (B), when the pin is brought into contact with the contact portion 23 with the engaging recess 22 facing downward as shown in FIG. Even if 23 is flat toward the opening 24, the stopper member 19 can be prevented from coming off the pin.

  When the stopper member 19 is engaged with the engaging concave portion 22 with the engaging concave portion 22 facing upward, the bolt 35 is located outside the inclined column. Similarly, when the stopper member 19 is brought into contact with the contact portion 23 with the engagement recess 22 facing downward, the bolt 35 is located outside the inclined support column. When the bolt 35 protrudes to the inside of the inclined column, the bolt 35 interferes with the operator when the worker ascends and descends. However, when the bolt 35 protrudes outward as illustrated, the operator disturbs the operator. It will never be.

  Since the same stopper member 19 can be attached to both the left and right inclined strut pairs 11 and 12, the same structure can be used without manufacturing the two types of stopper members 19 corresponding to the left and right inclined strut pairs 11 and 12. The stopper member 19 can be attached to any of the left and right inclined strut pairs 11 and 12. Thereby, storage management of the stopper member 19 can be performed easily. In addition, since the stopper member 19 having the same structure can be attached to both the left and right inclined column pairs 11 and 12 of the staircase body 10, the two stopper members 19 having the same structure are attached to the left and right inclined column pairs 11 and 12. The stopper member 19 can be attached to one of the inclined strut pairs.

  Since one end of the stopper member 19 is engaged or abutted with the pin of the inclined column pair and the other end is fixed to the inclined column by the fastener 30, the width dimension in the front-rear direction of the tread plate 13 is different from each other. The inclined movement can be restricted using the same stopper member 19 for a plurality of types of temporary stairs.

  As shown in FIG. 1, the stopper member 19 is mounted on the staircase main body 10 such that the engaging member 20 is engaged with the pins of the inclined columns 11b, 12b on the back side, and the inclined columns 11a, 12a on the front side are engaged. However, the stopper member 19 may be attached to the staircase body 10 by reversing the front and rear. Even in this case, if the stopper member 19 is mounted so that the bolts 35 are on the outer side, it will not hinder the worker from going up and down.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, as described in Patent Document 1, the staircase body 10 to which the stopper member 19 is attached is also a type in which the footboard 13 protrudes from the front inclined column and does not extend to the rear inclined column. Can be applied. Further, the contact portion 23 may be a long hole similarly to the engagement recess portion 22, and in that case, the engagement recess portion 22 and the contact portion 23 extend from the opening portion 24 in the vertical direction in FIG. 2. .

DESCRIPTION OF SYMBOLS 10 Stair body 11 Inclined support | pillar pair 11a, 11b Inclined support pillar 12 Inclined support pillar pair 12a, 12b Inclined support pillar 13 Treading board 14a, 14b, 15a, 15b Opening 30 Fastener 31 Connecting piece 32 Fastening piece 33 Spacer piece 34 Reinforcing part 35 Bolt (screw member)
36 connecting pin 40 connecting rod

Claims (8)

A first inclined column pair having two inclined columns parallel to each other, a second inclined column pair having two inclined columns parallel to each other and parallel to the inclined column, and one end portion of the first inclined column pair And the other end of the second inclined column pair is rotatably coupled to the two inclined columns of the second inclined column pair. A staircase body having a plurality of treads and a variable inclination angle;
An engagement recess with which the pin engages is formed at the distal end portion, and a contact portion with which the pin abuts is formed at the base end portion so as to face the engagement recess and communicates with the contact portion. An engaging member having a portion formed at the base end, a connecting bar having one end connected to the base end of the engaging member, and a connecting piece connected to the other end of the connecting bar And a stopper member provided with a fastening piece facing the connecting piece and provided with a fastening member provided with a screw member for fastening the inclined strut, and a fastener attached to the inclined strut,
When the stopper member is mounted on one of the inclined strut pairs, the engaging recess is directed upward with respect to the connecting bar, the pin is engaged with the engaging recess, and the stopper member is engaged with the other inclined strut pair. When mounting to the stopper, the engaging recess is directed downward with respect to the connecting bar, and the pin is brought into contact with the contact portion, whereby the stopper member having the same structure is mounted on both of the inclined strut pairs. Temporary staircase characterized by being able to.   2. The temporary staircase according to claim 1, wherein said engaging step has first and second stopper members having the same structure, and said engaging concave portion of one stopper member faces upward with respect to said connecting bar. The pin is engaged with the concave portion and attached to one of the inclined strut pairs, and the engaging concave portion of the other stopper member is directed downward with respect to the connecting bar, and the pin is brought into contact with the contact portion. A temporary staircase, which is attached to the other pair of inclined columns.   The temporary staircase according to claim 1 or 2, wherein the fastener is fastened to the inclined strut so that the screw member is outside the inclined strut.   The temporary staircase according to any one of claims 1 to 3, wherein the connecting piece of the fastener is rotatably connected to the connecting bar. A first inclined column pair having two inclined columns parallel to each other, a second inclined column pair having two inclined columns parallel to each other and parallel to the inclined column, and one end portion of the first inclined column pair And the other end of the second inclined column pair is rotatably coupled to the two inclined columns of the second inclined column pair. A temporary staircase stopper that regulates the inclination movement of the temporary staircase having a plurality of treads and the inclination angle being variable,
An engagement recess with which the pin engages is formed at the distal end portion, and a contact portion with which the pin abuts is formed at the base end portion so as to face the engagement recess and communicates with the contact portion. An engagement member having a portion formed at the base end,
A connecting rod having one end connected to the base end of the engaging member;
A connecting piece connected to the other end of the connecting bar, and a fastener mounted on the inclined strut having a fastening piece facing the connecting piece and provided with a screw member that fastens the inclined strut Having a stopper member with
When the stopper member is mounted on one of the inclined strut pairs, the engaging recess is directed upward with respect to the connecting bar, the pin is engaged with the engaging recess, and the stopper member is engaged with the other inclined strut pair. When mounting to the stopper, the engaging recess is directed downward with respect to the connecting bar, and the pin is brought into contact with the contact portion, whereby the stopper member having the same structure is mounted on both of the inclined strut pairs. A temporary staircase stopper characterized by being able to.   The temporary staircase stopper according to claim 5, wherein the stopper member is mounted on the pair of inclined struts on the left side of the tread plate on which an operator ascends and descends with the engaging recess facing upward with respect to the connecting rod, A stopper for a temporary staircase, wherein the stopper member is mounted on the pair of inclined struts on the right side of the tread plate so that the engaging concave portion faces downward with respect to the connecting bar.   The temporary staircase stopper according to claim 5 or 6, wherein the fastener is fastened to the inclined strut so that the screw member is outside the inclined strut.   The temporary staircase stopper according to any one of claims 5 to 7, wherein the connecting piece of the fastener is rotatably connected to the connecting bar member.

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