Outrigger

Abstract

Make it an outrigger that can be easily adjusted in height. 【Solution means】It includes a support member 2 fixed to the structure M, a jack bolt 3 having a grounding surface 17 at the lower part, a pressing member 4 having a thread portion 20 that can be screwed onto a part of the male thread portion 3a on the outer periphery of the jack bolt 3 and connected to the support member 2. The pressing member 4 is an outrigger that is capable of lateral movement to a screwing position where it abuts and screws onto the male thread portion 3a of the jack bolt 3 and a non-screwing position where it is separated from the jack bolt 3.

Description

Technical Field

[0001] This invention relates to an outrigger that is easy to install.

Background Art

[0002] In various construction and civil engineering works, temporary scaffolds and shoring works are used as temporary structures. In order to prevent the temporary structure from tipping over, an outrigger may be provided so as to project laterally (for example, Patent Document 1).

[0003] The outrigger of Patent Document 1 includes a support member fixed to a structure, a jack bolt having a ground contact surface at the lower part, a jack handle screwed to the jack bolt, and an outer vertical member fixed to the support member and through which the jack bolt is inserted. This outrigger adjusts the height of the ground contact surface of the jack bolt with respect to the support member by turning the jack handle and moving the jack bolt vertically with respect to the outer vertical member.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When adjusting the height of the ground contact surface of the jack bolt in the outrigger of Patent Document 1, especially when the adjustment range is large, it is necessary to rotate the jack handle a considerable number of times until reaching the desired position from the original position. Since many temporary structures are often provided at the construction site, the number of outriggers to be installed on them also increases, so there is a problem that the installation work for the entire site takes a considerable amount of time and labor.

[0006] The problem to be solved by this invention is to provide an outrigger that is easy to adjust in height. [Means for Solving the Problem]

[0007] In order to solve the above problems, this invention adopts an outrigger with the following configuration. [Configuration 1] An outrigger for supporting a structure, a support member fixed to the structure, a jack bolt having a ground contact surface at the lower part, and a pressing member having a thread portion that can be screwed onto a part of the male thread portion on the outer periphery of the jack bolt and connected to the support member. The pressing member is an outrigger that is movable horizontally between a screwing position where it abuts against and screws onto the male thread portion of the jack bolt and a non-screwing position where it is separated from the jack bolt.

[0008] [Configuration 2] The support member is provided with a lever device including a link mechanism connected to the pressing member and an operation lever connected to the link mechanism. The lever device is the outrigger according to Configuration 1, which can move the pressing member via the link mechanism by operating the operation lever and switch between the screwing position and the non-screwing position.

[0009] [Configuration 3] The pressing member is the outrigger according to Configuration 1, which can be fixed by a fixing pin in the screwing position. [Effect of the Invention]

[0010] The outrigger of this invention can slide the jack bolt in the vertical direction by moving the pressing member to the non-screwing position, and can be easily moved to a desired installation height. Also, by moving the pressing member to the screwing position, the jack bolt can be easily screwed and fixed. Further, even when the pressing member is in the screwing position, fine adjustment of the installation height can be performed by rotating the jack bolt relative to the pressing member.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments of this invention will be described with reference to the drawings. As shown in FIG. 1, the outrigger 1 according to the embodiment of this invention is intended to support the structure M so as not to topple over. The structure M is used in various construction works and civil engineering works. Examples of the structure M include various structures such as temporary scaffolds, shoring works, temporary stages, and temporary bridges. In the embodiment, a temporary scaffold will be described as an example of the structure M.

[0013] As shown in Fig. 2, this outrigger 1 includes a support member 2 fixed to a structure M (see Fig. 1), a jack bolt 3 having a grounding surface 17 at the lower part, and a pressing member 4 that can be screwed and fixed to the jack bolt 3. The support member 2 includes a vertical member 10 connected to the structure M, a horizontal member 11 extending horizontally from the lower end of the vertical member 10, a jack insertion member 12 extending vertically from the horizontal member 11, a first diagonal member 13 connecting the vertical member 10 and the jack insertion member 12, and a second diagonal member 14 connecting the horizontal member 11 and the first diagonal member 13.

[0014] The vertical member 10 extends in the vertical direction. The vertical member 10 is a pipe material. Fixing parts 15 for fixing the vertical member 10 to the structure M are respectively attached to the upper end and the lower end of the vertical member 10. As the fixing parts 15, various clamps such as pipe clamps and wedge clamps can be used. A plurality of fixing parts 15 may be provided at the central part of the vertical member 10.

[0015] The horizontal member 11 extends perpendicularly to the vertical member 10 from the lower end of the vertical member 10. The horizontal member 11 is welded to the vertical member 10. The horizontal member 11 is a pipe material. The jack insertion member 12 is provided at the end of the horizontal member 11 on the side opposite to the vertical member 10 (the left side in Fig. 2). The lower end of the jack insertion member 12 is welded to the horizontal member 11. The jack insertion member 12 is a hollow square bar. A protrusion 16 for connecting the pressing member 4 is provided on the horizontal member 11. The protrusion 16 is composed of a bolt and is screwed into a screw hole (not shown) provided on the side of the horizontal member 11 so as to sandwich the pressing member 4 between the head of the bolt and the horizontal member 11.

[0016] The first diagonal member 13 is respectively welded to the upper end of the vertical member 10 and the upper end of the jack insertion member 12. The first diagonal member 13 is a pipe material. The second diagonal member 14 is respectively welded to the central part of the first diagonal member 13 and the end of the horizontal member 11 close to the vertical member 10 (the right side in Fig. 2). The second diagonal member 14 is a pipe material. The first diagonal member 13 and the second diagonal member 14 are provided as reinforcing members for reinforcing the support member 2.

[0017] The jack bolt 3 is a bolt member having a shaft shape and having a male thread portion 3a formed on its outer periphery. A grounding plate 18 having a lower surface as a grounding surface 17 is provided at the lower end of the jack bolt 3. The grounding plate 18 is formed in a rectangular shape. The jack bolt 3 is inserted into the jack insertion member 12 so as to be movable in the vertical direction.

[0018] As shown in FIG. 3, the pressing member 4 includes a screw fitting 19 that can be screwed with the jack bolt 3 and a slide fitting 21 that fixes the screw fitting 19. The screw fitting 19 has an arc shape formed by cutting a cylinder in the axial direction and the circumferential direction. An internal thread portion 20 (female thread) corresponding to the male thread portion 3a of the jack bolt 3 is formed on the inner periphery of the screw fitting 19, and can be screwed onto a part of the outer periphery of the jack bolt 3. The screw fitting 19 is provided on the side opposite to the cross member 11 (the left side in FIG. 3) with the jack bolt 3 interposed therebetween. A protrusion 22 extending to the side opposite to the jack bolt 3 (the left side in FIG. 3) is formed on the outer peripheral surface of the screw fitting 19.

[0019] The slide fitting 21 has a pair of mounting plates 23 facing each other with the cross member 11 interposed therebetween. The mounting plate 23 is provided with a slide hole 24 extending in the lateral direction. The slide fitting 21 is inserted through the protrusion 16 into the slide hole 24 and is movable parallel to the cross member 11. By moving the slide fitting 21, the screw fitting 19 can be moved between a screwed position (see FIG. 4) where it abuts against and is screwed onto the jack bolt 3 and a non-screwed position (see FIG. 5) where it is separated from the jack bolt 3.

[0020] As shown in FIG. 4, a lever device 25 is connected to the slide fitting 21. The lever device 25 includes a link mechanism 26 connected to the pressing member 4 and an operation lever 27 connected to the link mechanism 26. This lever device 25 is a so-called toggle clamp and is a device that utilizes the principle of a lever. The link mechanism 26 is attached to the upper ends of the pair of mounting plates 23 via pins 28. The link mechanism 26 is connected to the cross member 11. The link mechanism is composed of two links.

[0021] As shown in FIGS. 4 and 5, by operating the operation lever 27, the lever device 25 can laterally move the pressing member 4 via the link mechanism 26, and switch between a screwed position (see FIG. 4) and a non-screwed position (see FIG. 5). The lever device 25 has a locking mechanism that self-locks as the operation lever 27 is tilted closer to the cross member 11, and the direction of the reaction force reverses after passing the dead point. The lever device 25 can lock the pressing member 4 so as not to move laterally at the screwed position by the locking mechanism. Since the position of the pressing member 4 can be moved only by operating the operation lever 27, the switching operation between the screwed position and the non-screwed position is simple.

[0022] The usage method of the outrigger 1 of this embodiment will be described.

[0023] First, as a preliminary preparation, the jack bolt 3 is held in a state of being pulled upward with respect to the support member 2. Specifically, before attaching the outrigger 1 to the structure M, as shown in FIG. 5, the operation lever 27 is lifted, and the pressing member 4 is moved to the non-screwed position, so that the jack bolt 3 can move freely in the vertical direction. Next, the jack bolt 3 is pulled upward with respect to the support member 2 (the grounding plate 18 is brought closer to the cross member 11). Next, as shown in FIG. 4, the operation lever 27 is tilted, the pressing member 4 is moved to the screwed position, and the jack bolt 3 is screwed and fixed to the pressing member 4. Here, screwing means a state where the male screw portion 3a of the jack bolt 3 meshes with the screw portion 20 of the pressing member 4, and in this state, by rotating the jack bolt 3 around its axis, the jack bolt 3 moves up and down with respect to the support member 2.

[0024] After making preparations, as shown in Fig. 1, the outrigger 1 is applied to the structure M such that the cross member 11 protrudes laterally with respect to the structure M, and the outrigger 1 is fixed to the structure M by attaching the fixing part 15 to the structure M. Next, as shown in Fig. 5, with the operating lever 27 raised and the pressing member 4 in the non-threaded position, the jack bolt 3 is pulled downward with respect to the support member 2, and the grounding surface 17 of the jack bolt 3 is brought into contact with the ground G. Next, as shown in Fig. 4, the operating lever 27 is lowered, the pressing member 4 is moved to the threaded position, and the jack bolt 3 is screwed and fixed to the pressing member 4.

[0025] In this embodiment, as shown in Fig. 5, by moving the pressing member 4 to the non-threaded position, the jack bolt 3 can be slid (raised and lowered) in the vertical direction and can be easily moved to a desired installation height. Further, by moving the pressing member 4 to the threaded position, the jack bolt 3 can be easily screwed and fixed. Also, even when the pressing member 4 is in the threaded position, fine adjustment of the installation height can be performed by screwing and rotating the jack bolt 3 with respect to the pressing member 4.

[0026] The lever device 25 of this embodiment is configured such that when the operating lever 27 is raised, the pressing member 4 is moved to the non-threaded position, and when the operating lever 27 is lowered, the pressing member 4 is moved to the threaded position. However, a mechanism that reverses this operation may also be used, that is, when the operating lever 27 is raised, the pressing member 4 can be moved to the threaded position, and when the operating lever 27 is lowered, the pressing member 4 can be moved to the non-threaded position.

[0027] In addition, although the outrigger 1 of this embodiment locks the pressing member 4 in the screwed position by the locking mechanism of the lever device 25, the method is not limited, and various methods that can maintain the pressing member 4 in a state of being screwed to the jack bolt 3 can be adopted. For example, as shown in FIGS. 6 and 7, it can also be locked by the fixing pin 29. Specifically, in a state where the pressing member 4 is in the screwed position, as shown in FIG. 8, through holes 11a and 23a are provided that penetrate the cross member 11 and the mounting plate 23, respectively. Further, a pin mounting base 30 is provided so as to cover the through hole 23a of the mounting plate 23. The pin mounting base 30 is provided with a through hole 30a so as to be aligned with the through hole 11a and the through hole 23a. Further, the cross member 11 is provided with a through hole 11b corresponding to the through hole 23a in a state where the pressing member 4 is in the non-screwed position.

[0028] The fixing pin 29 is formed so as to be insertable into the through hole 11a, the through hole 23a, and the through hole 30a. Thereby, as shown in FIG. 6, by moving the pressing member 4 to the screwed position and aligning the through hole 11a and the through hole 23a, and inserting the fixing pin 29 from the through hole 30a, the pressing member 4 can be locked in the screwed position. Also, by moving the pressing member 4 to the non-screwed position, aligning the through hole 11b and the through hole 23a, and inserting the fixing pin 29 from the through hole 30a, the pressing member 4 can also be locked in the non-screwed position. In this locking method, since only the fixing pin 29 needs to be prepared as a component for locking the pressing member 4, the cost can be suppressed.

[0029] Also, as a method of locking the pressing member 4, a method using a spring can also be adopted. Specifically, the pressing member 4 is connected to the cross member 11 via a spring. This spring is a tension spring that presses the pressing member 4 against the jack bolt 3. Thereby, by pulling the pressing member 4 in a direction away from the jack bolt 3 and separating it from the jack bolt 3, the pressing member 4 can be brought into a non-screwed state. On the other hand, by stopping pulling the pressing member 4, it can be brought into a screwed state by the elastic force of the spring.

[0030] In addition, in this embodiment, materials such as pipe materials and hollow square bars are used for the support member 2, but the materials used are not limited to these, and other steel materials, such as solid round bars and solid square bars, can also be used.

[0031] The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the scope of claims for utility model registration, and all modifications within the meaning and scope equivalent to the scope of claims for utility model registration are intended to be included.

Explanation of Reference Numerals

[0032] 2 Support member 3 Jack bolt 3a Male threaded portion 4 Pressing member 17 Ground contact surface 20 Threaded portion 25 Lever device 26 Link mechanism 27 Operating lever 29 Fixed pin M Structure

Claims

1. An outrigger (1) for supporting a structure (M), comprising: a support member (2) fixed to the structure (M); a jack bolt (3) having a ground contact surface (17) at the lower part; a pressing member (4) having a thread portion (20) that can be screwed onto a part of an external thread portion (3a) on the outer periphery of the jack bolt (3) and connected to the support member (2); The outrigger, wherein the pressing member (4) is capable of lateral movement between a screwing position where it abuts and screws onto the external thread portion (3a) of the jack bolt (3) and a non-screwing position where it is separated from the jack bolt (3).

2. The support member (2) is provided with a lever device (25) comprising a link mechanism (26) connected to the pressing member (4) and an operating lever (27) connected to the link mechanism (26). The outrigger according to claim 1, wherein the lever device (25) can switch between the screwing position and the non-screwing position by operating the operating lever (27) to move the pressing member (4) via the link mechanism (26).

3. The outrigger according to claim 1, wherein the pressing member (4) can be fixed by a fixing pin (29) in the screwing position.

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