Long object mounting device

Abstract

To provide a long object mounting device capable of erecting a long object in a vertical direction from a work floor without difficulty even if a mounting position of an object to be mounted for fixing and arranging the long object is not at the same position in the vertical direction.SOLUTION: A long object mounting device comprises a first attaching device 21 and a second attaching device 41. Each attaching device includes: a long object fixing portion 23 having an insertion portion through which an obstacle detection sensor 15 is inserted, and which is slidable in a length direction of the obstacle detection sensor and can be fixed at any position; a slide shaft portion 27 projecting continuously from a side surface of the long object fixing portion; a slide portion 29 slidable in an axial direction on an outer periphery of the slide shaft portion and fixable at any position; and a holding mechanism 33 provided on the slide portion and capable of attaching and holding the obstacle detection sensor to a handrail of the work floor. The slide portion of the first attaching device and the slide portion of the second attaching device can be attached and held at positions offset in the axial direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a device for attaching, for example, a long rod-shaped object equipped with an obstacle detection sensor at the tip, to a handrail of a work platform (bucket) of an aerial work vehicle. [Background technology]

[0002] For example, a vehicle for working at height is provided with a work platform (bucket) at the tip of a boom on which a worker can board and work at height. The work platform (bucket) is configured to include a box-shaped floor portion that is open at the top, and handrails that are arranged so as to surround the upper end of the floor portion in the circumferential direction.

[0003] Conventionally, the four corner areas of the work platform (bucket) of this type of aerial work vehicle have been equipped with long rod-shaped obstacle detection devices with obstacle detection sensors at the tip, in order to prevent problems such as a worker being pinched between an overhead obstacle and the handrail of the work platform (bucket) and being injured, thereby increasing safety when working at heights.

[0004] Incidentally, the handrails on this work floor (bucket) are known to be equipped with a first circumferential handrail located below (near the upper end of the floor) and a second circumferential handrail located above the first circumferential handrail. Some of these work platforms are configured so that the second circumferential handrail is located inside the first circumferential handrail, meaning that the first and second circumferential handrails are not in the same position vertically, but are offset horizontally.

[0005] Conventionally, when such a rod-shaped obstacle detection device (long object) was fixed to a handrail, it was fastened and arranged at least in two places in the vertical direction, namely, to the first circumferential handrail and the second circumferential handrail, using fastening members such as wire.

[0006] However, in the case of a handrail structure that is misaligned in the horizontal direction, if an obstacle detection device (long object) is fastened and fixed using wire or the like, it is inevitably arranged in a tilted state inward, which not only hinders reliable obstacle detection but can also get in the way of work. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 7140638 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made to solve such problems associated with the prior art, and its objective is to provide a long object mounting device that can easily erect a long object vertically from a work floor even if the mounting position of the object to be mounted to fix and install the long object is not the same position in the vertical direction. [Means for solving the problem]

[0009] In order to achieve this object, a first aspect of the present invention is an attachment device used to arrange an elongated object at a desired position, comprising: a long object fixing portion having an insertion portion through which the long object is inserted, the long object being slidable in the length direction of the long object and being fixable at an arbitrary position; a slide shaft portion projecting continuously from a side surface of the elongated object fixing portion; a slide portion that is slidable in the axial direction on the outer periphery of the slide shaft portion and can be fixed at any position; The elongated object mounting device is characterized by including a holding mechanism provided on the slide portion and capable of holding the elongated object at a predetermined position on an object to be mounted.

[0010] The second invention is a long object mounting device according to the first invention, characterized in that the long object is equipped with an obstacle detection sensor at the tip or in the area near the tip.

[0011] The third aspect of the present invention is the long object mounting device according to the second aspect of the present invention, characterized in that the object to be installed is a handrail on the working floor of an aerial work platform.

[0012] The fourth aspect of the present invention is the third aspect of the present invention, wherein the handrails include first to n-th handrails that are provided at different heights in the vertical direction, The long object mounting device is characterized in that the first handrail to the nth handrail are offset in position in the horizontal direction.

[0013] The fifth aspect of the present invention is a method for attaching a long object to a vehicle according to any one of the first to fourth aspects of the present invention, wherein the attaching device for an elongated object comprises a first attaching device to an n-th attaching device, Each mounting device is The long object mounting device is characterized in that the slide portion of the first mounting device and the slide portion of the nth mounting device can be mounted and held at positions offset in the axial direction of their respective slide shaft portions. [Effects of the Invention]

[0014] According to the present invention, a long object mounting device can be provided that can easily erect a long object vertically from a work floor even if the mounting position of the object to be mounted for fixing and arranging the long object is not the same position in the vertical direction. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic side view showing a first embodiment of the long object fastening device of the present invention, illustrating the state in which the long object fastening device of this embodiment is installed on the work platform of an aerial work vehicle and in use. [Figure 2] FIG. 2 is a partially enlarged view showing a main part of the first embodiment. [Figure 3]1 is a schematic perspective view showing a usage form of the elongated object attaching device of the first embodiment. FIG. [Figure 4] FIG. 10 is a schematic perspective view showing another usage form of the elongated object attaching device of the first embodiment. [Figure 5] FIG. 4 is a partially enlarged view showing a main part of a second embodiment of the long object attaching device of the present invention. [Figure 6] FIG. 10 is a schematic perspective view showing a third embodiment of the long object attaching device of the present invention. [Figure 7] FIG. 10 is a partial schematic perspective view showing a state in which the elongated object attaching device of the third embodiment is used. DETAILED DESCRIPTION OF THE INVENTION

[0016] An embodiment of the present invention will be described below. Note that this embodiment is merely one embodiment of the present invention and should not be construed as being limited in any way, and appropriate design modifications are possible within the scope of the present invention.

[0017] First Embodiment In this embodiment, for example, the handrail structure 5 of the work platform (bucket) 1 of the aerial work vehicle shown in Figures 1 and 2 is assumed to be the object to which the long object mounting device 19 of the present invention is to be installed, and the following description will be given assuming that the long object (hereinafter simply referred to as the obstacle detection sensor) 15 is a square pipe 17 having a square cross section and a sensor unit 18 for detecting obstacles at the tip thereof. In this embodiment, the obstacle detection sensor 15 is assumed to be of a well-known type that is composed of a long rectangular pipe 17 and a sensor unit 18 that is fixedly attached to the tip of the rectangular pipe 17. Since the obstacle detection sensor 15 can be of a well-known type, a detailed description thereof will be omitted.

[0018] The work platform (bucket) 1 of the aerial work vehicle of this embodiment is composed of a rectangular box-shaped bucket body 3 with an open top, and a cylindrical handrail structure 5 arranged over the entire upper edge 3a of the bucket body 3. The handrail structure 5 is configured to include a first circumferential handrail 7 located near the upper edge 3a of the bucket body 3 and formed to the same shape and size as the upper edge 3a of the bucket body 3, a second circumferential handrail 9 located above the first circumferential handrail 7, a third circumferential handrail 11 located further above the second circumferential handrail 9, and multiple vertical handrails 13 that are erected integrally from the upper edge 3a of the bucket body 3 and that span the first circumferential handrail 7 to the third circumferential handrail 11 (see Figures 1 and 2). Each of the handrails 7, 9, 11, and 13 is made of a round pipe that is circular in cross section.

[0019] The bucket 1 illustrated and explained in this embodiment merely shows one embodiment to which the long object mounting device 19 of the present invention is applied, and any known bucket structure can be used. For example, although not shown in the figures, it may be composed of a floorboard section, multiple vertical handrails (pipe sections) formed integrally from the floorboard section, and first to nth circumferential handrails (pipe sections) that are hung horizontally across the multiple vertical handrails, with the first to nth circumferential handrails being arranged at desired intervals in the vertical direction, or everything except the floorboard section may be made of round pipes, etc., and the design can be modified as appropriate within the scope of the present invention. Furthermore, although the handrails are described as being round pipes in this embodiment, they may be square pipes and the design can be modified within the scope of the present invention.

[0020] Next, the handrail structure of the bucket 1 employed in this embodiment will be described.

[0021] The first circumferential handrail 7 and the second circumferential handrail 9 are disposed at the same position in the vertical direction V1. In contrast, the third circumferential handrail 11 is located inside the bucket (inside the bucket body 3) in the horizontal direction indicated by the arrow H1 relative to the second circumferential handrail 9 (first circumferential handrail 7). That is, in the work platform (bucket) 1 of this embodiment, the second circumferential handrail 9 (first circumferential handrail 7) and the third circumferential handrail 11 are not located at the same position in the vertical direction V1, but are positioned offset in the horizontal direction as indicated by the arrow H1 (see Figures 1 and 2).

[0022] Next, the long object mounting device 19 will be described.

[0023] The long object attaching device 19 of this embodiment is made up of two attaching devices: a first attaching device 21 and a second attaching device 41. In this embodiment, the first mounting device 21 and the second mounting device 41 have the same configuration, and therefore, the following description will focus on the first mounting device 21. Note that, since each component of the second mounting device 41 is the same as each component of the first mounting device 21, the same reference numerals are used and the description thereof will be omitted.

[0024] The first mounting device 21 is composed of a long object fixing section 23 that can fix the square pipe 17 of the obstacle detection sensor 15 at a desired position in the longitudinal direction L1 of the square pipe 17, a slide shaft section 27 that protrudes continuously from the side of the long object fixing section 23, a slide section 29 that can slide in the axial direction A1 on the outer periphery of the slide shaft section 27 and can be fixed at any position, and a holding mechanism 33 that is provided on the slide section 29 and can hold the handrail of the bucket 1 at a predetermined position.

[0025] The long object fixing portion 23 has a square cylindrical shape that is open at the top and bottom, has an internal space (insertion portion) 24 that is larger than the outer dimensions of the square pipe 17 of the obstacle detection sensor 15, and is slidable in the longitudinal direction L1 of the square pipe 17. It also has a mechanism that can fix (position) the square pipe 17 at any position. In this embodiment, a screw fastening structure 25 that presses and fixes the square pipe 17 at a desired position is used as the mechanism for fixing the square pipe 17 (see FIGS. 2 to 4).

[0026] The screw fastening structure 25 is composed of a screw shaft portion 25a that is screwed from the outside into a through hole 23a that extends from the outer surface to the inner surface of the long object fixing portion 23, and a knob portion 25b that is provided on the outside of the screw shaft portion 25a.

[0027] The slide shaft portion 27 is integrally and continuously provided from the central region of the side surface of the portion 23 for fixing the elongated object, and projects in the horizontal direction H1. In this embodiment, it is formed in a square tube shape having the same size as the portion 23 for fixing an elongated object and a desired length.

[0028] The slide portion 29 is formed in a square cylindrical shape having a square hole-shaped internal space that allows sliding movement in the axial direction A1 around the outer periphery of the slide shaft portion 27 formed in a square cylindrical shape. The slide portion 29 in this embodiment is formed to have a length that is approximately half that of the slide shaft portion 27. It has a mechanism that can fix (position) the slide portion 29 at a desired position on the outer periphery of the slide shaft portion 27. As a mechanism for fixing the slide portion 29, this embodiment employs a screw fastening structure 31 that presses and fixes the slide shaft portion 27 at a desired position.

[0029] The screw fastening structure 31 is composed of a screw shaft portion 31a that is screwed from the outside into a through hole 29a that extends from the outer surface to the inner surface of the slide portion 29, and a knob portion 31b that is provided on the outside of the screw shaft portion 31a.

[0030] The holding mechanism 33 is provided integrally with the underside of the slide portion 29 and employs a clamp portion 37 that tightens and fixes the handrail 7 (9, 11, 13) with a screw 35. The clamp portion 37 of this embodiment shown in the drawings is merely one embodiment, and is not to be construed as being limited to this form in any way, and other well-known forms of clamps can be applied. The holding mechanism 33 may have the following configuration instead of the clamp portion 37, and this configuration is within the scope of the present invention. That is, although not shown in the figure, it is also possible to adopt a configuration in which the mounting device has a U-shaped cross section, with two clamping pieces protruding in parallel, and the bucket handrail is clamped and fixed between the two clamping pieces.

[0031] According to this embodiment, the slide portion 29 of the first attachment device 21 and the slide portion 29 of the second attachment device 41 can be set at positions offset in the axial direction A1 of the respective slide shaft portions 27, and the position of the holding mechanism 33 can be offset in the axial direction A1 of the slide shaft portions 27. Because the slide portions 29, 29 can be set at positions offset in the axial direction A1 of the slide shaft portions 27, 27 in this way, even if the first circumferential handrail 7 and the third circumferential handrail 11 of the bucket 1 to be installed are offset in the horizontal direction H1, the obstacle detection sensor 15 can be installed straight in the vertical direction V1 (see FIGS. 1 and 2).

[0032] Furthermore, in this embodiment, the slide portion 29 is configured to be removable from the outer periphery of the slide shaft portion 27, so the orientation of the holding mechanism 33 (clamp portion 37) can be changed as appropriate in the circumferential direction of the slide shaft portion 27 (see FIGS. 3 and 4). Accordingly, in the above-described embodiment, the clamp portion 37 (holding mechanism 33), which was disposed below the slide portion 29 in the vertical direction V1 as shown in FIGS. 1 and 2, can be configured to be disposed on the side of the slide portion 29 (FIG. 3) or above the slide portion 29 in the vertical direction V1 (FIG. 4). By inserting and removing the slide portion 29 from the slide shaft portion 27 in this way, the installation position (orientation) of the clamp portion 37 can be changed as appropriate, so the attachment position to the handrail portion 7 (9, 11, 13) can be selected as appropriate, increasing the number of compatible holding position patterns and making it extremely easy to use.

[0033] The configuration of the elongated object mounting device 19 is not limited to this embodiment, and other configurations may also be adopted. In this embodiment, two mounting devices, a first mounting device 21 and a second mounting device 41, are assumed as one embodiment of the long object mounting device 19, but the number of mounting devices to be arranged is also arbitrary and the design can be changed as appropriate depending on the specifications. Furthermore, for example, it is also possible to configure the first attachment device 21 and the second attachment device 41 as an integrated unit, which is within the scope of the present invention. Furthermore, although not shown, the length of the long object fixing portion 23 may be approximately twice that of this embodiment, and the slide shaft portion 27 of the first mounting device 21 and the slide shaft portion 27 of the second mounting device 41 may be protruded in the horizontal direction H1 at upper and lower positions on the side of the long object fixing portion 23 at a desired distance apart in the vertical direction, and slide portions 29, 29 may be disposed on the respective slide shaft portions 27, 27.

[0034] In addition, in this embodiment, one embodiment of the long object mounting device 19 is a form that employs two devices, the first mounting device 21 and the second mounting device 41, but it is also possible to use only one of the first mounting device 21 and the second mounting device 41, and employ, as the other mounting device, for example, a mounting device consisting only of a long object fixing portion and a holding mechanism. For example, one possible example is a configuration that includes a long object fixing portion (synonymous with the long object fixing portion in the above-described embodiment) that has an insertion portion through which a long object is inserted, is capable of sliding in the length direction of the long object, and can be fixed at any position, and a holding mechanism that is fixed directly to the side of the long object fixing portion and can hold the long object at a predetermined position on the object to be placed. That is, unlike the mounting devices of the present embodiment described above (first mounting device 21, second mounting device 41), it is also possible to adopt a configuration in which the slide shaft portion 27 and slide portion 29 are not provided, and the holding mechanism is directly fixed to the side surface of the elongated object fixing portion and does not slide in the horizontal direction. The holding mechanism may take any form, such as the clamp portion described above.

[0035] Second Embodiment FIG. 5 shows a second embodiment of the long object mounting device 19.

[0036] The elongated object mounting device 19 of this embodiment employs a holding mechanism 33 that is different from that of the first embodiment. Since the other configurations are the same as those of the first embodiment, the same parts are denoted by the same reference numerals and detailed explanations thereof will be omitted.

[0037] The holding mechanism 33 of this embodiment has a plate portion 34 integrally formed on the underside of the slide portion 29 in a direction perpendicular to the sliding direction of the slide portion 29 (the same direction as the axial direction A1), and has clamp portions 37, 37 arranged one on each end region of the underside of the plate portion 34. In this embodiment, both the first mounting device 21 and the second mounting device 41, which are arranged one above the other in the vertical direction, employ a holding mechanism 33 with two clamp sections 37 arranged on each side, which is very useful as it can stably hold a long object (obstacle detection sensor 15) even more straight in the vertical direction.

[0038] The length and thickness of the plate portion 34 employed in this embodiment are merely one example and are optional. Furthermore, the shape and number of the clamp portions 37 are not limited to this shape and can be appropriately modified within the scope of the present invention. In addition, it is also an embodiment of the present invention that either the first mounting device 21 or the second mounting device 41 is equipped with the holding mechanism 33 of this embodiment, and the other is equipped with a holding mechanism 33 that has only one clamp portion 37, as in the first embodiment.

[0039] "Third embodiment" 6 and 7 show another embodiment of the first attachment device 21 and the second attachment device 41 that constitute the elongated object attachment device 19. In FIG.

[0040] In this embodiment, the bucket 1, which is configured only with a rectangular box-shaped bucket body 3 and does not have a handrail structure 5, is applied to a case where a long object is to be disposed. Since aerial work platforms equipped with such a bucket 1 are used for, for example, electric wiring installation or electrical work, the bucket 1 is often not equipped with a metal handrail structure. Furthermore, in the case of a bucket 1 consisting only of a rectangular box-shaped bucket body 3, the thickness of the wall upper edge 3b may differ from that of the other wall portions. That is, the wall upper edge 3b is formed thicker than the other wall portions.

[0041] Therefore, the second mounting device 41 of this embodiment shown in FIGS. 6 and 7 is provided with a holding mechanism 51 capable of holding the wall surface upper edge portion 3b of the bucket 1.

[0042] The holding mechanism 51 is fixed integrally to the side surface of the portion 23 for fixing the elongated object. The portion 23 for fixing the elongated object has the same configuration as that of the above embodiment, and therefore the description thereof will be used.

[0043] The holding mechanism 51 comprises a first member 53 formed by continuously molding a side plate portion 55 and a top plate portion 57 into a generally L-shaped configuration when viewed from the front, and a second member 59 formed by continuously molding a side plate portion 61 and a top plate portion 63 into a generally L-shaped configuration when viewed from the front. A long hole (not shown) is formed in the top plate portion 57 of the first member 53, and a guide shaft 65 that is inserted into the long hole in the top plate portion 57 of the first member 53 and is slidably mounted on the top plate portion 63 of the second member 59 and protrudes downward in the vertical direction V1. The guide shaft 65 can be fastened and fixed at a desired position, so that the first member 53 and the second member 59 can be fixed at an appropriate position (a width that can clamp the wall surface 3b of the bucket 1).

[0044] By employing such a configuration, first member 53 and second member 59 can slide in the direction away from each other as indicated by arrow S1, and the distance between side plate portion 55 of first member 53 and side plate portion 61 of second member 59 can be adjusted. In other words, this can be adjusted to accommodate the thickness of upper edge portion 3b of the wall surface of bucket 1 to be installed.

[0045] Although not shown, it is also possible to adopt a structure in which, as in the first embodiment, a slide shaft portion 27 is integrally protruded horizontally from the side of the elongated object fixing portion 23, and a slide portion 29 is provided on the outer periphery of the slide shaft portion 27 so as to be able to slide, and the lower surface of the slide portion 29 is fixed integrally to the upper surface (top surface) of the second member 59, and this is within the scope of the present invention. With this configuration, the holding mechanism 51 can be slid in the sliding direction (the same direction as the axial direction A1) to adjust the position.

[0046] The side plate portion 61 of the second member 59 is provided with a pressing and holding portion 67 for pressing against the outer wall surface of the bucket wall upper edge portion 3b. The pressing and holding portion 67 is capable of moving forward toward the inner surface of the side plate portion 55 of the first member 53 (indicated by arrow M1) and moving backward in a direction away from the inner surface of the side plate portion 55 of the first member 53 (indicated by arrow S1). The pressing and holding portion 67 can firmly hold the bucket wall upper edge portion 3b.

[0047] The pressing retaining portion 67 is composed of a screw shaft portion 71 that is screwed from the outside into a through hole 69 provided in the side plate portion 61 of the second member 59, a knob portion 73 that is provided at the outer end of the screw shaft portion 71, and a pressing portion 75 that is provided at the inner end of the screw shaft portion 71. The pressing portion 75 is configured not to rotate together with the screw shaft portion 69 . By providing this pressing and holding portion 79, it is possible to press the pressing portion 75 against the upper edge 3b of the bucket body 3 by pinching the knob 73 and pushing the screw shaft 71 toward the upper edge 3b of the bucket body 3. The configuration of the pressing portion 75 is not limited to the illustrated form in any way, and any configuration that does not rotate together with the screw shaft portion 69 may be used, and design changes are possible within the scope of the present invention.

[0048] The first mounting device 41 has a plate portion 77 integrally provided on the side surface of the portion for fixing an elongated object 23 in a direction perpendicular to the sliding direction (the same direction as the length direction L1) of the portion for fixing an elongated object 23, and the plate portion 77 is provided with a pressing mechanism 79 that can press a pressing portion 81 against the inner surface of the wall surface 3a of the bucket body 3. Note that the length and thickness of the plate portion 77 are not particularly limited to those shown in the drawings.

[0049] The pressing mechanism 79 is composed of a screw shaft portion 85 that is threaded into a through hole 83 provided in the plate portion 77 and can move back and forth freely, a pressing portion 81 provided at one end of the screw shaft portion 85, and a knob portion 87 provided at the other end of the screw shaft portion 85. The pressing portion 81 is configured not to rotate together with the screw shaft portion 85 . The configuration of the pressing portion 81 is not limited to the illustrated form in any way, and any configuration that does not rotate together with the screw shaft portion 85 may be used, and design changes are possible within the scope of the present invention. By providing this pressing mechanism 79, it is possible to press the pressing part 81 against the inner wall surface of the bucket body 3 by pinching the knob 87 and pushing the screw shaft 85 toward the inner wall surface of the bucket body 3. This allows the obstacle detection sensor 15, which is a long object in the bucket body 3, to be arranged straight in the vertical direction.

[0050] According to this embodiment, by adopting such a configuration, it is extremely easy to use, as it can arrange long objects straight without tilting in the vertical direction, even on aerial work platforms such as those equipped with only a rectangular box-shaped bucket and used for wire installation and electrical work. [Industrial Applicability]

[0051] The present invention can be used to install long obstacle detection sensors on various aerial work vehicles and aerial work platforms, such as truck-type aerial work vehicles, crane trucks, and self-propelled aerial work vehicles, and can also be widely used to install various long objects other than obstacle detection sensors in desired locations. [Explanation of symbols]

[0052] 1 Work platform (bucket) 3 Bucket body 5 Handrail structure 7 First circumferential handrail 9 Second circumferential handrail 11 Third circumferential handrail 15 Long objects (obstacle detection sensor) 17 Square pipe 19 Sensor section 21 First mounting device 23 Long object holding part 25 Screw fastening structure 27 Slide shaft 29 Slide section 31 Screw fastening structure 33 Retention mechanism 37 Clamp section 41 Second mounting device 51 Retention mechanism 53 First member 55 Side plate part 57 Top plate 59 Second member 61 Side plate part 63 Top plate 65 Guide shaft V1 vertical direction H1 horizontal direction A1 Axial direction

Claims

1. A mounting device used to arrange a long object at a desired position, a long object fixing portion having an insertion portion through which the long object is inserted, the long object being slidable in the length direction of the long object and being fixable at an arbitrary position; a slide shaft portion projecting continuously from a side surface of the elongated object fixing portion; a slide portion that is slidable in the axial direction on the outer periphery of the slide shaft portion and can be fixed at any position; a holding mechanism provided on the slide portion and capable of holding the elongated object at a predetermined position on an object to be disposed.

2. 2. The long object attaching device according to claim 1, wherein the long object is provided with an obstacle detection sensor at the tip or in the area near the tip.

3. 3. The long object mounting device according to claim 2, wherein the object to be mounted is a handrail on a work floor of a high-altitude work vehicle.

4. The handrails include first to n-th handrails that are provided at different heights in the vertical direction, 4. The long object mounting device according to claim 3, wherein the first handrail to the n-th handrail are offset in position in the horizontal direction.

5. the elongated object attaching device comprises a first attaching device to an n-th attaching device, Each mounting device is 5. A long object mounting device according to any one of claims 1 to 4, characterized in that the slide portion of the first mounting device and the slide portion of the nth mounting device can be mounted and held at positions offset in the axial direction of their respective slide shaft portions.

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