Material holding unit, and structure equipped therewith

Abstract

To make the material holding device easier to move. [Solution] The structure 1 comprises a plurality of support members 3, beam members 5 and 6 stretched between the support members 3, a longitudinal guide member 2 fixed along the support members 3 or along the beam members 5 and 6, a material holding part 10 that is movable along the longitudinal direction of the guide member 2, and a brake device 30 that locks the movement of the material holding part 10 relative to the guide member 2 in the longitudinal direction.

Description

Technical Field

[0001] The present invention relates to a material holding unit attached to a structure such as a temporary scaffold, and a structure including the same.

Background Art

[0002] Generally, a temporary scaffold is installed along the outer wall of a building or the like and is used for workers to perform construction work such as repair and painting. As shown in, for example, Patent Document , a temporary scaffold has a structure in which a pair of two strut members arranged in parallel in a direction orthogonal to the wall surface of a building or the like are arranged in parallel at a predetermined interval with respect to the direction parallel to the wall surface, a beam member is connected between the adjacent strut members in the direction parallel to the wall surface, and a scaffold board is fixed to the beam member. In addition, there is a case where a beam member is spanned between a pair of two strut members arranged in parallel in the direction orthogonal to the wall surface without fixing the scaffold board to the beam member, and a scaffold board is fixed between the adjacent beam members in the direction parallel to the wall surface. ...

[0003] Such a temporary scaffold is constructed by sequentially assembling materials (for example, strut members, beam members, scaffold boards, and other necessary materials) upward from a position close to the ground to a predetermined height. These materials are lifted by a crane or the like from a material storage provided on the ground. At this time, since it is inefficient to lift the materials one by one, it is common to lift a certain amount of materials at the same time and temporarily place them near the construction site. In order to temporarily place the materials used for constructing the temporary scaffold, for example, a material holding part as disclosed in Patent Document has been proposed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

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[0005] The material holder described in Patent Document 2 is designed to be secured to a handrail member installed along the beam of a temporary scaffolding. However, the location where materials to be temporarily placed changes as construction progresses. Furthermore, after materials have been temporarily placed on the material holder, there may be situations where it is necessary to move the temporarily placed materials as the work progresses. For this reason, it is desirable that the material holder be easily moved to an appropriate location.

[0006] Therefore, the objective of this invention is to make it easier to move the material holding part in the structure. [Means for solving the problem]

[0007] To solve the above problems, this invention employs a structure comprising a plurality of support members, a beam member spanning between the support members, a longitudinal guide member fixed along the support members or along the beam member, a material holding part that is movable along the longitudinal direction of the guide member, and a brake device that locks the movement of the material holding part in the longitudinal direction relative to the guide member (Configuration 1).

[0008] In configuration 1, the brake device may be configured to include a pressing member facing the guide material, a cam member having a cam surface in contact with the pressing member, and an operating part for rotating the cam member, wherein the pressing force of the pressing member against the guide material increases or decreases by the rotation of the cam member (configuration 2).

[0009] In configuration 1 or configuration 2, the brake device may be configured to include a first elastic member that biases the pressing member away from the guide material and a second elastic member that biases the pressing member in a direction that presses against the guide material, wherein the biasing force of the first elastic member is set to be greater than the biasing force of the second elastic member (configuration 3).

[0010] In any one of configurations 1 to 3, the material holding section may be configured to include a pair of receiving sections extending horizontally to support the material to be temporarily placed, a pair of main members extending vertically to support the pair of receiving sections, and a connecting member connecting the pair of main members, wherein the main members or the connecting member may be equipped with a traveling device that rolls the material holding section in the longitudinal direction relative to the guide member, and a braking device (configuration 4).

[0011] A material holding unit can be used in the structure described in any one of configurations 1 to 4, and can be provided with a material holding part that is movable along the longitudinal direction of the guide material, and a brake device that locks the movement of the material holding part in the longitudinal direction relative to the guide material (configuration 5).

[0012] Furthermore, a temporary scaffold can be adopted that is constructed using any one of the structures described in configuration 1 to configuration 4, and includes scaffolding boards fixed to the support members and beam members or either thereof (configuration 6). [Effects of the Invention]

[0013] This invention makes it possible to easily move the material holding part in a structure. [Brief explanation of the drawing]

[0014] [Figure 1] Perspective view showing the material holding part of the first embodiment of this invention [Figure 2] Enlarged view of the main part of Figure 1 [Figure 3A] Figure 1 shows an enlarged perspective view of the main part of the brake device used in the material holding section (unlocked state). [Figure 3B] Figure 1 shows an enlarged perspective view of the main part of the brake device used in the material holding section (locked state). [Figure 4A] Perspective view of Figure 3A from above. [Figure 4B] Perspective view of Figure 3B from above. [Figure 5] Side view showing the material holding section of the first embodiment attached to the structure. [Figure 6] Front view of FIG. 5 [Figure 7] Perspective view of the traveling device [Figure 8] Side view showing an example in which a material holding part is attached to another structure [Figure 9] Front view showing the material holding part of the second embodiment of the present invention (lock release state) [Figure 10A] Right side view of FIG. 9 (lock release state) [Figure 10B] Right side view of FIG. 9 (locked state)

Mode for Carrying Out the Invention

[0015] Embodiments of the present invention will be described based on the drawings. In each of the following embodiments, the configuration of the present invention will be described based on an example in which the material holding part 10 is mounted on a temporary structure 1 (hereinafter referred to as a temporary scaffold 1) installed at a construction site or the like.

[0016] FIGS. 1 to 8 show a temporary scaffold 1 provided with a material holding part 10 (material holding unit U) of the first embodiment, and FIGS. 9 to 10B show a temporary scaffold 1 provided with a material holding part 10 (material holding unit U) of the second embodiment.

[0017] As shown in FIGS. 5 and 6, the temporary scaffold 1 has a pair of two strut members 3, 3 arranged in parallel in a direction (hereinafter referred to as one direction) orthogonal to the wall surface of a building, structure, etc. (hereinafter collectively referred to as a building, etc.), arranged in parallel at a predetermined interval with respect to a direction parallel to the wall surface (hereinafter referred to as the other direction), a one-directional beam member (horizontal member) 5 is spanned between the pair of two strut members 3, 3, and a scaffold board 4 is spanned and fixed between the adjacent beam members 5 in the other direction. Also, the adjacent strut members 3, 3 in the other direction are connected by a beam member (horizontal member) 6. A part of the beam member 6 is installed slightly above the scaffold board 4 and also serves as a handrail for workers. In addition, the adjacent strut members 3, 3 in one direction or the other direction are connected by diagonal members 7 inclined with respect to the horizontal direction as necessary, and the rigidity of the structure is enhanced. Note that the scaffold board 4 may also be spanned between the adjacent beam members 6 in one direction.

[0018] The lower end of the support column 3 is resting on the ground via a height adjustment device. The height adjustment device allows for height adjustment of the support column 3 using a screw mechanism or the like to accommodate uneven ground and varying elevations. The support column 3, the beam member 5 in one direction, the beam member 6 in the other direction, and the diagonal member 7 are all made of pipes (single-pipe members) with a circular cross-section.

[0019] Temporary scaffolding 1 is constructed by sequentially assembling materials (support columns 3, beams 5 and 6, scaffolding boards 4, and other materials necessary for the construction of temporary scaffolding 1) from a position close to the ground upwards until it reaches a predetermined height. At this time, the materials necessary for the construction of temporary scaffolding 1 are lifted from a material storage area set up on the ground using a crane or the like and temporarily placed in a material holding section 10 set up in an appropriate location. Furthermore, after temporary scaffolding 1 has been constructed, materials necessary for the construction of buildings, etc., may also be lifted using a crane or the like and temporarily placed in the material holding section 10.

[0020] The material holding section 10 includes a pair of receiving sections 16 that extend horizontally to support materials to be temporarily placed, a pair of main members 11 that extend vertically to support the pair of receiving sections 16, and a connecting member 12 that connects the pair of main members 11. In this embodiment, the connecting member 12 is configured as an upper connecting member 12a that connects the upper ends of the pair of main members 11 and a lower connecting member 12b that connects the lower ends of the two main members 11.

[0021] The pair of receiving sections 16 are designed to accommodate long, rectangular materials such as pipes or ladders. The materials may be placed so that they extend outward from the pair of receiving sections 16. A flat bottom plate 18 is also placed between the pair of receiving sections 16, allowing relatively small materials to be placed on the bottom plate 18. Materials placed on the receiving sections 16 (including the bottom plate 18) are held in place by appropriate means such as binding materials to prevent movement.

[0022] As shown in Figure 1, the pair of receiving portions 16 consist of a cylindrical large-diameter portion 16a and a small-diameter portion 16b with a smaller diameter than the inner diameter of the large-diameter portion 16a. The end of the small-diameter portion 16b on the main material 11 side (hereinafter referred to as "one end") fits into the end of the large-diameter portion 16a on the opposite side of the main material 11 (hereinafter referred to as "the other end"), and by sliding against each other, the amount of the small-diameter portion 16b fits into the large-diameter portion 16a increases or decreases. This adjusts the amount of protrusion of the receiving portion 16. A locking mechanism is provided between the large-diameter portion 16a and the small-diameter portion 16b to fix them in a predetermined extended or retracted position (locking the slide).

[0023] The receiving portion 16 and the main member 11 are connected by a reinforcing portion 17 that extends diagonally, allowing it to withstand the weight of the temporarily placed materials on the receiving portion 16. In Figure 1, the reinforcing portion 17 connects the middle of the space between one end and the other end of the receiving portion 16 to the middle of the vertical direction of the main member 11. However, this can be modified so that, as shown in Figure 5, the reinforcing portion 17 connects the other end of the receiving portion 16 to the lower end of the main member 11. Also, in Figure 1, a secondary member 15 extending vertically is connected to the main member 11 via brackets 15a and 15b. The reinforcing portion 17 is not directly connected to the main member 11, but is connected to the main member 11 via the secondary member 15. This can be modified so that, as shown in Figure 5, the secondary member 15 is omitted and the reinforcing portion 17 is directly connected to the main member 11.

[0024] As shown in Figures 1 and 5, a longitudinal guide member 2 is fixed along the beam member 6. The guide member 2 is made of the same single-pipe material as the support members 3 and beam members 5 and 6. The guide member 2 is held in place by clamp members 2a (see Figure 5) which are arranged at appropriate intervals along the longitudinal direction (other direction) relative to the beam member 6. The clamp members 2a protrude laterally (in one direction) from the beam member 6 and support the guide member 2 from below.

[0025] A traveling device 20 is fixed to the connecting member 12, which causes the material holding part 10 to roll longitudinally relative to the guide member 2. The traveling device 20 holds the material holding part 10 so that it can move freely along the longitudinal direction of the guide member 2.

[0026] As shown in Figure 2, the traveling device 20 includes a clamping portion (traveling device clamping portion) 21 that holds the connecting member 12 of the material holding portion 10, and a rolling portion 22 that can roll in the longitudinal direction relative to the guide material 2.

[0027] The clamp portion 21 comprises a base portion 21a that is fitted against the connecting member 12, a rotating portion 21b that is rotatably joined to the base portion 21a via a pin 26, and a tightening means 25 for tightening the base portion 21a and the rotating portion 21b. The base portion 21a and the rotating portion 21b each have an inner surface (cylindrical surface) that can be in close contact with the outer surface (cylindrical surface) of the cylindrical connecting member 12. When the base portion 21a is fitted against the connecting member 12, and the rotating portion 21b is rotated relative to the base portion 21a around the axis of the pin 26, the connecting member 12 is sandwiched between the base portion 21a and the rotating portion 21b. In this state, the base portion 21a and the rotating portion 21b are tightened by the tightening means 25, so that the outer surface of the connecting member 12 and the inner surfaces of the base portion 21a and the rotating portion 21b are in close contact with each other under pressure, and the clamp portion 21 is fixed to the connecting member 12.

[0028] In this embodiment, the fastening means 25 consists of a screw shaft 25a and a nut 25b that is screwed onto the screw shaft 25a. The screw shaft 25a, which is pivotably supported relative to the base 21a, enters into a groove 21c provided in the rotating part 21b. The nut 25b is then screwed onto the screw shaft 25a while it is in the groove 21c, and the nut 25b is tightened onto the screw shaft 25a while in contact with the edge of the groove 21c. The form of the fastening means 25 is not limited to the form using a screw shaft 25a and a nut 25b, and any well-known means that can fasten members together may be used.

[0029] The rolling section 22 consists of a base section 22a connected to the base section 21a of the clamp section 21, a retaining section 22b connected to the base section 22a, and a roller (wheel) 23 fixed to the base section 22a. The axle of the roller 23 is rotatably supported by the base section 22a. The roller 23 is in contact with the guide material 2, and the retaining section 22b prevents the running device 20 from falling off the guide material 2. As the roller 23 in contact with the guide material 2 rotates around the axis of its axle, the roller 23 rolls along the longitudinal direction of the guide material 2, and the material holding section 10 equipped with the running device 20 moves (runs) along the longitudinal direction of the guide material 2.

[0030] Figure 7 is a perspective view showing details of the traveling device 20. In this embodiment, the traveling device 20 is attached to the connecting member 12, but it may also be attached to the main member 11 or other members constituting the material holding section 10. Furthermore, the configuration of the traveling device 20 is not limited to this embodiment, and devices with various configurations may be adopted.

[0031] Furthermore, the main member 11 is fitted with a brake device 30 that locks the longitudinal movement of the material holding section 10 relative to the guide material 2.

[0032] As shown in Figure 2, the brake device 30 includes a clamp portion (brake device clamp portion) 31 that holds the main material 11 of the material holding portion 10, and a lock portion 36 that locks the longitudinal movement of the material holding portion 10 relative to the guide material 2.

[0033] As shown in Figures 3A and 3B, the clamp portion 31 comprises a base portion 31a that is placed against the main material 11, a rotating portion 31b that is rotatably joined to the base portion 31a via a pin 31g, and a tightening means for tightening the base portion 31a and the rotating portion 31b. The base portion 31a and the rotating portion 31b each have an inner surface (cylindrical surface) that can be in close contact with the outer surface (cylindrical surface) of the cylindrical main material 11. When the base portion 31a is placed against the main material 11, and the rotating portion 31b is rotated relative to the base portion 31a around the axis of the pin 31g, the main material 11 is clamped between the base portion 31a and the rotating portion 31b. In this state, the clamping means tightens the base 31a and the rotating part 31b, causing the outer surface of the main material 11 and the inner surfaces of the base 31a and rotating part 31b to be in close contact under pressure, thereby fixing the clamp part 31 to the main material 11.

[0034] In this embodiment, as shown in Figures 4A and 4B, a screw shaft 31e and a nut 31f that is screwed onto the screw shaft 31e are used as fastening means. The screw shaft 31e, which is pivotably supported with respect to the base 31a, enters into a groove 31d provided in the rotating part 31b. The nut 31f is then screwed onto the screw shaft 31e while it is in the groove 31d, and the nut 31f is tightened onto the screw shaft 31e while in contact with the edge of the groove 31d. The fastening means is not limited to the configuration using a screw shaft 31e and a nut 31f, and any well-known means that can fasten members together may be used.

[0035] As shown in Figures 4A and 4B, the locking section 36 includes a pressing member (brake shoe) 35 facing the guide material 2, a cam member 34 having a cam surface 34a in contact with the pressing member 35, and an operating section 33 for rotating the cam member 34. Rotation of the cam member 34 increases or decreases the pressing force of the pressing member 35 against the guide material 2, and this increase or decrease locks the movement of the material holding section 10 relative to the guide material 2, and also allows for the release of this lock.

[0036] In this embodiment, the locking portion 36 is provided on a base portion 32 connected to the clamp portion 31. The base portion 32 comprises a substrate portion 32a having a plate surface in the horizontal direction, a connecting portion 32c provided so as to rise from the end of the substrate portion 32a on the clamp portion 31 side, and a support portion 32b provided on the substrate portion 32a. The base portion 31a of the clamp portion 31 is attached to the connecting portion 32c via connecting means 31h such as bolts and nuts. The support portion 32b is to which a pressing member 35, a cam member 34, and an operating portion 33 are attached.

[0037] As shown in Figures 3A and 3B, a pressing member 35 is pivotably supported on the support portion 32b. The pressing member 35 has a sliding surface 35a facing the guide material 2 and is attached to a pivotable arm portion 35b on the support portion 32b via a pivot shaft 35c. In addition, a longitudinal operating portion 33 is pivotably supported on the support portion 32b via a pivot shaft 33b. The operating portion 33 has a holding portion 33a that can be grasped by an operator and rotates on the support portion 32b via the pivot shaft 33b.

[0038] Figures 3A and 4A show the unlocked state, where the sliding surface 35a is detached from the guide material 2 (not shown). By rotating the operating part 33 around the axis of the pivot shaft 33b from the unlocked state, the cam member 34 rotates together with the pivot shaft 33b. This rotation causes the cam surface 34a of the cam member 34 to press the tip 35d of the pressing member 35, causing the sliding surface 35a to contact the guide material 2 and transition to the locked state. Figures 3B and 4B show the locked state, where the sliding surface 35a is in contact with the guide material 2 (not shown). By rotating the operating part 33 in the opposite direction from the locked state, the sliding surface 35a can be detached from the guide material 2 and transition back to the unlocked state.

[0039] Here, the arm portion 35b is biased by an elastic member (such as a coil spring) (not shown) in a direction that causes the pressing member 35 to detach from the guide material 2. Therefore, when the operating portion 33 is rotated in the locked state, the pressing member 35 can be smoothly detached from the guide material 2 by the biasing force.

[0040] In this embodiment, the brake device 30 is attached to the main member 11, but the brake device 30 may also be attached to the connecting member 12 or other members that constitute the material holding part 10.

[0041] Figure 8 is a side view showing an example of a material holding device attached to a structure (temporary scaffolding) 1 of a different form. In the example in Figure 8, the temporary scaffolding 1 to which the material holding section 10 (material holding unit U) is attached is shown in a configuration in which the axial direction of the support members 3 is inclined with respect to the vertical direction. Therefore, the axial direction of the main member 11 of the material holding section 10 is also inclined with respect to the vertical direction so as to be parallel to the support members 3. The other configurations are the same as in the example described above, so their explanation is omitted.

[0042] Other embodiments of this invention are shown in Figures 9 to 10B. These embodiments are variations of the brake device 30.

[0043] As shown in Figure 9, the brake device 30 includes a first elastic member 40 that biases the pressing member 35 in a direction away from the guide material 2 (not shown), and a second elastic member 41 that biases the pressing member 35 in a direction pressing against the guide material 2.

[0044] The arm portion 35b is biased by the first elastic member 40 in a direction that causes the pressing member 35 to detach from the guide material 2. Therefore, when the operating portion 33 is rotated in the locked state, the pressing member 35 can be smoothly detached from the guide material 2 by the biasing force. In other words, the first elastic member 40 prevents the pressing member 35 from becoming fixed (entangled) with the guide material 2. Here, Figure 9 shows the unlocked state, Figure 10A shows the unlocked state, and Figure 10B shows the locked state.

[0045] In the figure, reference numeral 35d indicates the tip 35d of the swinging end of the arm portion 35b, and reference numeral 35e indicates the holding portion 35e on the arm portion 35b side that receives the first elastic member 40. The holding portion 35e is provided to protrude upward (away from the guide material 2) from the tip 35d. Reference numeral 32e indicates the holding portion 32e on the base portion 32 side that receives the first elastic member 40. A bolt shaft 40b is inserted between the holding portion 35e on the arm portion 35b side and the holding portion 32e on the base portion 32 side. The bolt shaft 40b is inserted through the first elastic member 40, which is made of a coil spring 40a, and a nut 40c is screwed on, thereby fixing the first elastic member 40 between the holding portion 35e on the arm portion 35b side and the holding portion 32e on the base portion 32 side.

[0046] Furthermore, as shown in Figure 10A, the arm portion 35b is biased by the second elastic member 41 in the direction that the pressing member 35 approaches the guide material 2. Therefore, the pressing member 35 is prevented from becoming fixed in the direction that approaches the base portion 32 by the biasing force of the first elastic member 40, that is, from becoming fixed (entangling) in the unlocked state. Here, in order to smoothly prevent sticking, it is desirable that the biasing force of the first elastic member 40 be set to be greater than the biasing force of the second elastic member 41.

[0047] In the figure, reference numeral 32d denotes the retaining portion 32d on the base portion 32 side that receives the second elastic member 41. A bolt shaft 41b is inserted between the retaining portion set closer to the pivot axis 35c of the arm portion 35b and the retaining portion 32d on the base portion 32 side. The bolt shaft 41b is inserted through the second elastic member 41, which is made of a coil spring 41a, and the bolt shaft 41b faces the retaining portion on the arm portion 35b side. The second elastic member 41 is fixed between the retaining portion on the arm portion 35b side and the retaining portion 32d on the base portion 32 side by this bolt shaft 41b.

[0048] In the above embodiment, the configuration of the present invention was described using a structure 1 as an example, which has a material holding unit U equipped with a material holding part 10 that is movable along the longitudinal direction of the guide material 2 and a brake device 30 that locks the longitudinal movement of the material holding part 10 relative to the guide material 2. However, it is also possible to add the material holding unit U to a structure 1 that does not have the material holding unit U later. Therefore, it is also effective to trade only the material holding unit U separately from the main body of the structure 1. When adding the material holding unit U to a structure 1 that does not have the material holding unit U later, the guide material 2 can be provided at an appropriate position relative to the structure 1.

[0049] In the above embodiment, the guide member 2 is arranged along the horizontal beam member 6, but the orientation of the guide member 2 can be changed as appropriate according to the specifications. For example, by arranging the guide member 2 along the support member 3, the material holding section 10 can be made movable in the vertical direction. Alternatively, by arranging the guide member 2 in a direction inclined with respect to the axial direction of the support member 3, the material holding section 10 can be made movable in an oblique direction inclined with respect to both the horizontal and vertical directions.

[0050] Furthermore, in the above embodiment, the structure 1 having the material holding unit U, or the structure 1 to which the material holding unit U can be applied, is a temporary scaffolding equipped with support members 3, beam members 5, 6 and scaffolding boards 4. However, the structure 1 is not limited to temporary scaffolding and can be applied to various other structures 1 for other purposes, such as various types of shoring used at construction sites, temporary stages, temporary bridges, etc. [Explanation of Symbols]

[0051] 1. Temporary scaffolding (structure) 2 Guide material 3 Support material 4 scaffolding planks 5,6 Beam material 10. Material holding section 11 Main material 12 Connecting material 16 Receiving part 20 Traveling device 21 Clamp section 22 Rolling part 23 Laura 30 Brake system 31 Clamp section 32 Base section 33 Operation section 34 Cam component 35. Pressing member (brake shoe) 40 First elastic member 41 Second elastic member U Material Holding Unit

Claims

1. A structure comprising a plurality of support members (3), beam members (5, 6) stretched between the support members (3), a longitudinal guide member (2) fixed along the support members (3) or along the beam members (5, 6), a material holding part (10) that is movable along the longitudinal direction of the guide member (2), and a brake device (30) that locks the movement of the material holding part (10) relative to the guide member (2) in the longitudinal direction.

2. The brake device (30) comprises a pressing member (35) facing the guide material (2), a cam member (34) having a cam surface (34a) in contact with the pressing member (35), and an operating part (33) for rotating the cam member (34), wherein the pressing force of the pressing member (35) against the guide material (2) increases or decreases by the rotation of the cam member (34), as described in claim 1.

3. The brake device (30) comprises a first elastic member (40) that biases the pressing member (35) away from the guide material (2), and a second elastic member (41) that biases the pressing member (35) in a direction that presses against the guide material (2), wherein the biasing force of the first elastic member (40) is set to be greater than the biasing force of the second elastic member (41), as described in claim 1.

4. The material holding section (10) comprises a pair of receiving sections (16) extending horizontally to support the materials to be temporarily placed, a pair of main members (11) extending vertically to support the pair of receiving sections (16), and a connecting member (12) connecting the pair of main members (11). The structure according to claim 1, wherein the main member (11) or the connecting member (12) is provided with a traveling device (20) for rolling the material holding portion (10) in the longitudinal direction relative to the guide member (2), and a braking device (30).

5. A material holding unit used in a structure according to any one of claims 1 to 4, comprising a material holding portion (10) that is movable along the longitudinal direction of the guide material (2), and a brake device (30) that locks the movement of the material holding portion (10) in the longitudinal direction relative to the guide material (2).

6. A temporary scaffold comprising a structure according to any one of claims 1 to 4, and including scaffolding boards (4) fixed to the support members (3) and the beam members (5, 6) or either thereof.

Images