JP2007153478A - Vehicle for high lift work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate use of a ladder for getting on/off as a getting on/off means with respect to a boarding part. <P>SOLUTION: In this vehicle A for high lift work equipped with a traveling part 1, a lifting/lowering part 2 provided in the traveling part 1 and the boarding part 3 liftable/lowerable by the lifting/lowering part 2, the ladder 30 for getting on/off is provided in the lower side of a floor part 25 of the boarding part 3, and the position of the ladder 30 for getting on/off is changeable between a storage position where the ladder 30 for getting on/off is arranged in a lying down state along a lower face of the floor part 25 and a use position where the ladder 30 for getting on/off is arranged in a hanging down state from an edge part of the floor part 25. Thus, the ladder 30 for getting on/off in the storage position does not become an obstruction for various work on the boarding part 3 by a passenger, and the ladder 30 for getting on/off in the use position can be easily used as a getting on/off means with respect to the boarding part 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an aerial activity vehicle for performing activities such as, for example, transporting a victim left in a high-altitude fire place to a safe place for rescue.

  Conventionally, as one form of an aerial activity vehicle, there is one that includes a traveling unit, a lifting unit provided in the traveling unit, and a riding unit that can be lifted and lowered by the lifting unit (see, for example, Patent Document 1). ).

  The boarding section has a protective fence standing on the periphery of the floor, and a part of the protective fence is used as a protective fence / ladder member that can be raised and lowered. It is possible to let you.

In this way, the protective fence / ladder member is moved down by the electric lifting means and placed between the floor and the ground, so that an operator or the like can get on / off the floor via the protective fence / ladder member. To be able to.
JP 7-206395 A

  However, in the above-mentioned high altitude activity vehicle, since a part of the protective fence is made as a vertically movable protective fence / ladder member, the protective fence / ladder member functions firmly as a part of the protective fence, The structure for smoothly and reliably moving up and down is complicated, and the cost is high.

  Moreover, since the protective fence and ladder member is moved up and down by the electric lifting and lowering means, when the power source is provided in the traveling part, wiring for supplying electricity from the power source to the boarding part is required. Further, when a power source such as a heavy battery is provided in the boarding part, there is a problem that the boarding area is limited in addition to the allowable boarding weight of the boarding part.

  Further, when an electrical malfunction occurs, the protective fence / ladder member does not operate, so that it does not function as a protective fence or does not function as a ladder.

  Therefore, in the present invention, in an aerial activity vehicle comprising a traveling part, a lifting part provided in the traveling part, and a riding part that can be raised and lowered by the lifting part, the passenger gets on and off the floor part of the riding part. In addition to providing a ladder, the ladder for getting on and off is located between a storage position arranged in a lying state along the lower surface of the floor and a use position arranged in a suspended state below the edge of the floor. It is intended to provide an aerial activity vehicle that is characterized by being freely changeable.

  The present invention is also characterized by the following configuration.

  (1) The moving means for moving the ladder for getting on and off between the storage position and the use position is provided on the lower surface of the floor portion of the riding section, and the operating means for operating the moving means is provided on the floor portion.

  (2) The moving means guides the moving portion that moves the base end portion of the ladder for getting on and off between the storing position and the use position of the ladder for getting on and off, and the leading end portion of the ladder for getting on and off that is moved by the moving portion. And a posture changing section for changing the posture of the passenger ladder to a lying posture and a hanging posture.

  (3) The operation means is interposed between the rotation operation unit that is manually operated to rotate and the rotation operation unit and the movement unit, and transmits the rotational force from the rotation operation unit to the movement unit. A transmission section.

  (1) In the present invention described in claim 1, in an aerial activity vehicle comprising a traveling part, an elevating part provided in the traveling part, and a riding part that can be elevated by the elevating part, The ladder for getting on and off is provided below the floor, and the ladder for getting on and off is placed in a lying state along the lower surface of the floor and used in a suspended state below the edge of the floor. The position can be freely changed between positions.

  In this way, the ladder for getting on and off is placed in a suspended state below the floor part of the boarding part, in a stowed position along the lower surface of the floor part, and below the edge of the floor part. Since the position can be freely changed between the use position and the ride position, the ladder for getting on and off at the storage position does not interfere with various operations on the boarding section. Can be easily used as a means of getting on and off the boarding section.

  At this time, since the ladder for getting on and off is provided independently regardless of the configuration of the protective fence provided in the riding section, the structure of the ladder for getting on and off itself can be simplified and the cost can be reduced. It is possible to ensure a good rigidity.

  (2) In the present invention described in claim 2, the moving means for moving the ladder for getting on and off between the storage position and the use position is provided on the lower surface of the floor portion of the riding section, and the operating means for operating the moving means. On the floor.

  In this way, by operating the operating means on the floor portion of the riding section, the moving means provided on the lower surface of the floor portion of the riding section is operated, and the ladder for getting on and off is placed between the storage position and the use position. It can be moved smoothly and reliably.

  As a result, it is possible to easily and easily get on and off the boarding section using the ladder for getting on and off.

  (3) In the present invention described in claim 3, the moving means is moved between the storage position of the ladder for getting on and off and the use position by the moving part for moving the base end of the ladder for getting on and off, and the moving part. And a posture changing unit that guides the front end of the ladder for getting on and off and changes the posture of the ladder to the lying posture and the hanging posture.

  In this way, by cooperating the moving part and the posture changing part provided in the moving means, the ladder for getting on and off can be moved smoothly and reliably between the storage position and the use position, It is possible to smoothly get on and off the boarding part as work.

  In particular, when there is a need to repeatedly carry out activities such as rescue the victims left in high fire places etc. to a safe place, rapid boarding / exiting work is required. This is particularly effective in such a case.

  (4) In the present invention described in claim 4, the operating means is interposed between the rotating operation unit that is manually operated to rotate, and the rotating operation unit and the moving unit. The transmission part which transmits the rotational force of this to a movement part is comprised.

  In this way, by manually operating the rotating operation unit, the rotational force can be transmitted to the moving unit via the transmission unit, so that it is necessary for the electric type, that is, from the power source. Wiring for supplying electricity to the boarding part, arrangement of a heavy battery or the like in the boarding part, and consideration for electrical malfunctions are not required.

  As a result, the operability of the ladder for getting on and off can be ensured satisfactorily, and the manufacturing cost of the means for changing the position of the ladder for getting on and off to the storage position and the use position can be reduced.

  A shown in FIGS. 1 to 3 is an aerial activity vehicle according to the present invention. The aerial activity vehicle A includes a traveling unit 1, a lifting unit 2 provided in the traveling unit 1, and a lifting unit 2. It is equipped with the boarding part 3 which can be moved up and down, and carries out activities such as transporting the rescued persons left in a high fire place etc. to a safe place for rescue.

  As shown in FIGS. 1 to 3, the traveling unit 1 is provided with a driving unit 5 at the front portion of the traveling frame 4, and a loading platform 6 at the rear portion of the traveling frame 4. 7 is a front wheel and 8 is a rear wheel.

  The elevating part 2 has a base 11 mounted on the rear part of the cargo bed part 5 via a lower swivel 10 so that the base 11 can turn freely, and a base with the left and right axial lines directed to the upper end of the base 11. The base part of the boom 13 extending in the front-rear direction is pivotally supported via the end-side pivot 12, and the riding part via the tip-side pivot 14 whose axis is directed in the left-right direction to the tip of the boom 13 The lower end portion of the support body 15 is pivotally supported, and the riding section 3 is mounted on the upper end portion of the riding section support body 15 via the upper turntable 16.

  Here, the lower swivel base 10 can be swung around an axis in the vertical direction by a swivel motor (not shown) so that the base 11 is swung. The boom 13 can be moved up and down by an elevating cylinder 17 about the base end side pivot 12 and can be expanded and contracted in an extending direction by an expansion and contraction cylinder (not shown) provided in the boom 13. . The riding section support 15 can be tilted in the front-rear direction by a tilting cylinder 18 around the distal end side pivot 14. The upper turntable 16 can be turned around an axis in the vertical direction by a turning motor (not shown) to turn the riding section 3.

  1 to 3, 20 and 21 are first and second step bodies provided on the right side wall of the base 11, 22 is a third step body provided on the right side surface of the boom 13, and 23 is This is a fourth step body provided on the upper surface of the boom 13, and the loading and unloading from the loading platform 6 to the riding section 3 can be performed via the first to fourth step bodies 20, 21, 22, and 23.

  As shown in FIGS. 1 to 3, the boarding portion 3 has a protective fence 26 erected on the peripheral portion of a rectangular floor portion 25 extending in the front-rear direction, and the rear central portion of the protective fence 26 is The opening / closing door body 27 can be freely opened and closed, and the opening / closing door body 27 is opened so that the passenger can get in and out of the riding section 3. In FIG. 1, reference numeral 28 denotes an operation unit for operating the riding unit 3 to move up and down and turn. The operating unit 28 can move the boarding unit 3 up and down and turn while riding on the boarding unit 3. I can do it.

  In the configuration as described above, the gist of the present invention is that, as shown in FIGS. 4 to 6, a boarding ladder 30 is provided below the floor 25 of the riding section 3, and the boarding ladder 30 is as shown in FIG. And as shown in FIG. 8, the storage position (a) arrange | positioned along the lower surface of the floor part 25 in the lying state, and the use position (b) arrange | positioned below the edge part of the floor part 25 downward. The position can be freely changed between.

  That is, as shown in FIGS. 4 to 6, on the lower surface of the floor portion 25 of the riding section 3, the landing ladder 30 is placed between the storage position (a) and the use position (b) (see FIGS. 7 and 8). A moving means 31 for moving the moving means 31 and an operating means 32 for operating the moving means 31 are provided on the floor 25.

  As shown in FIGS. 4 to 6, the moving means 31 is supported by the support portion 33 which is supported between the storage position (a) and the use position (b) of the ladder 30 for getting on and off, and is supported by the support portion 33. The moving part 34 for moving the boarding / alighting ladder 30 between the storage position (a) and the use position (b), and the boarding / alighting ladder 30 moved by the moving part 34 are guided to the boarding / alighting ladder. And a posture changing unit 35 that changes the posture 30 to a recumbent posture at the storage position (a) and a hanging posture at the use position (b).

  Next, for convenience of explanation, before describing the configuration of the ladder 30 for getting on and off, each component constituting the moving means 31 will be described.

  The support portion 33 is attached to the lower surface of the floor portion 25 of the riding portion 3 with the support portion main body 40 in a suspended state via a pair of left and right front support members 36 and 37 and a pair of left and right rear support members 38 and 39. Yes.

  The support body 40 is formed in a plan view type by laying a left and right extension piece 43 extending in the left-right direction between the front end portions of the pair of left and right front and rear extension pieces 41, 42 extending in the front-rear direction. Yes.

  Further, the pair of left and right front support members 36 and 37 are provided above the front part of the pair of left and right front and rear extension pieces 41 and 42, respectively, and extend in the front and rear direction extending pieces 44 and part of the floor 25. 45 is connected to the upper end.

  The left and right pair of rear support members 38 and 39 are provided above the front part of the pair of left and right front and rear extension pieces 41 and 42, respectively, and the rear end part left and right extension pieces 46 that form a part of the floor portion 25. The upper end is connected to the left-right part.

  The moving part 34 supports the input shaft 48 with the axis line in the front-rear direction through the front shaft support body 47 at the center part of the left and right extension pieces 43 forming a part of the support body 40, and the same input. The rear part of the shaft 48 is connected to the front end part of the male threaded rod 50 extending in the front-rear direction via the universal joint 49, and is hung from the center part of the left-right extension piece 46 that forms part of the floor part 25. The rear end portion of the male screw rod 50 is pivotally supported on the shaft support body 51.

  The rear shaft support 51 is arranged at a position above the universal joint 49 so that the male screw rod 50 can rotate around its axis in a tilted state of front and rear and rear height.

  Further, the male screw rod 50 described above can be rotated forward and backward by operating means 32 described later.

  The posture changing unit 35 includes a plurality of (three in this embodiment) roller support shafts 52, 52, 52, 53, with the axis lines directed in the left-right direction on the lower surfaces of the pair of left and right front and rear extension pieces 41, 42 described above. 53, 53 are attached to each of the roller support shafts 52, 52, 52, 53, 53, 53 inwardly with the guide rollers 54, 54, 54, 55, 55, 55 are rotatably mounted around the axis of each roller support shaft 52, 52, 52, 53, 53, 53.

  As shown in FIG. 4, the pair of left and right front and rear extension pieces 41 and 42 are arranged in a downwardly inclined manner from the front to the rear, and are attached to the lower surfaces of the front and rear extension pieces 41 and 42. The imaginary line K1 connecting the center positions of the guide rollers 54, 54, and 54 so that the rollers 54, 54, 54, 55, 55, and 55 are gradually disposed at lower positions from the front to the rear is a virtual horizontal line. A rearward downward inclination angle θ1 is formed with respect to L1.

  Also, a pair of left and right rearmost roller support shafts 58 and 59 are attached to the lower surfaces of the left and right rear support members 38 and 39 via brackets 56 and 57, respectively. The rearmost guide rollers 60 and 61 are attached to the extended portions extended inward from 58 and 59 so as to be rotatable around the axis of the rearmost roller support shafts 58 and 59, respectively.

  The rearmost guide rollers 60, 61 are arranged below the guide rollers 54, 55 arranged immediately before, and a virtual line K2 connecting the center positions of these guide rollers 54, 60 is relative to the virtual horizontal line L2. A rearward downward inclination angle θ2 is formed.

  Further, a pair of left and right stopper pieces 62 and 63 project inwardly in the middle of the pair of left and right rear support bodies 38 and 39, and both stopper pieces 62 and 63 are provided on the ladder 30 for getting on and off. However, when the posture is changed from the recumbent posture at the storage position (a) to the hanging posture at the use position (b), an excessive change in posture is suppressed.

  The operation means 32 is interposed between the rotation operation unit 70 that is manually operated to rotate, and the rotation operation unit 70 and the moving unit 34 described above, and moves the rotational force from the rotation operation unit 70. And a transmission portion 71 that transmits to the portion 34.

  As shown in FIGS. 3 and 6, the rotation operation unit 70 is provided with a shaft support 72 at the left rear portion of the protective fence 26, and a sprocket support shaft whose axis is directed to the coaxial support 72 in the front-rear direction. The output sprocket 74 is attached to the output sprocket 74 so as to be freely rotatable forward and backward via 73, and the rotation operation handle 75 is attached to the output sprocket 74. Or it can be rotated in the reverse direction.

  As shown in FIGS. 4 to 6, the transmission portion 71 includes a front transmission shaft support 76 provided on the left side of the left and right extension pieces 43 forming a part of the support portion main body 40, and the rear support 38. A transmission shaft 78 extending in the front-rear direction between the rear transmission shaft support 77 provided on the rear side of the transmission shaft 78 and mounted on the front end of the transmission shaft 78. A front transmission chain 81 is wound between an input side sprocket 80 provided on an input shaft 48 of the moving part 34, while an input side sprocket 82 attached to the rear end of the transmission shaft 78, and the operating means A rear transmission chain 83 is wound between the 32 output sprockets 74.

  In this way, when the rotation operation handle 75 is rotated forward / reversely, the sprocket support shaft 73 → the output sprocket 74 → the rear transmission chain 83 → the transmission shaft 78 → the output side sprocket 79 → the front transmission chain 81 → the moving part Forward / reverse turning power is transmitted from 34 input shafts 48 to universal joint 49 to male threaded rod 50.

  As shown in FIGS. 4 and 5, the boarding ladder 30 is provided with pivot pieces 91 and 91 projecting upward at the front ends of a pair of left and right support pillars 90 and 90 extending in the front-rear direction. An interlocking connecting piece 93 extending in the left-right direction is pivotally supported between the pivot pieces 91, 91 via pivot pins 92, 92 having an axis line in the left-right direction, and is pivotally supported horizontally. A plurality of (four in this embodiment) footrest pieces 94, 94, 94, 94 extending in the left-right direction are horizontally placed between the pillar pieces 90, 90 with a predetermined interval from the front to the rear. Yes.

  A female screw portion 95 is provided at the center of the interlocking connecting piece 93, and the female screw portion 95 is screwed to the male screw rod 50 of the moving portion.

  In this way, when the male screw rod 50 is normally rotated by the above-described rotation operation handle 75, the interlocking connecting piece 93 is moved rearward and upward along the male screw rod 50 via the female screw portion 95. When the interlocking connecting piece 93 is moved rearward and upward, as shown in FIGS. 7 and 8, the boarding ladder 30 is moved to the rear upper side and the rear end side is in the posture as shown in FIGS. It is moved rearward and downward by the changing unit 35 so that the posture is changed from the lying posture at the storage position (a) to the hanging posture at the use position (b).

  On the other hand, when the male screw rod 50 is reversely rotated by the rotary operation handle 75, the interlocking connecting piece 93 is moved forward and downward along the male screw rod 50 via the female screw portion 95. When the interlocking connecting piece 93 is moved forward and downward, as shown in FIGS. 7 and 8, the boarding ladder 30 is moved forward and downward by the front end side, and the rear end side is moved forward by the posture changing unit 35. By being moved upward, the posture is changed from the hanging posture at the use position (b) to the lying posture at the storage position (a).

  At this time, as shown in FIG. 7, the boarding unit 3 is moved to the vicinity of the ground G by the elevating unit 2, and the boarding ladder 30 is used between the ground G and the use position ( By changing the posture to b), it is possible to easily get on and off between the ground G and the riding section 3.

The side view of the aerial activity vehicle which concerns on this invention. The top view of the high-altitude activity vehicle. A rear view of the high-altitude activity vehicle. Side surface explanatory drawing of the principal part of this invention. Plane explanatory drawing of the principal part. Front explanatory drawing of the main part. Side surface explanatory drawing of the aerial activity vehicle which shows the use condition of the ladder for boarding / alighting. Side surface explanatory drawing which shows the use condition of the ladder for boarding / alighting.

Explanation of symbols

A high altitude activity vehicle 1 traveling section 2 lifting section 3 boarding section 4 traveling frame 5 driving section 6 loading platform section
30 Ladder for getting on and off

Claims (4)

In an aerial activity vehicle comprising a traveling part, a lifting part provided in the traveling part, and a riding part that can be lifted and lowered by the lifting part,
A ladder for getting on and off is provided below the floor part of the boarding part, and the ladder for getting on and off is placed in a lying state along the lower surface of the floor part, and is suspended downward from the edge part of the floor part. An aerial activity vehicle characterized in that the position can be freely changed between the used position.   A moving means for moving the ladder for getting on and off between the storage position and the use position is provided on the lower surface of the floor part of the boarding part, and an operating means for operating the moving means is provided on the floor part. The aerial activity vehicle according to claim 1.   The moving means guides the moving part that moves the base end part of the ladder for getting on and off between the storage position and the use position of the ladder for getting on and off, and the tip part of the ladder for getting on and off that is moved by the moving part, The aerial activity vehicle according to claim 2, further comprising a posture changing unit that changes a posture of the passenger ladder to a lying posture and a hanging posture.   The operation means includes a rotation operation unit that is manually operated to rotate, a transmission unit that is interposed between the rotation operation unit and the moving unit, and transmits a rotational force from the rotation operation unit to the moving unit. The aerial activity vehicle according to claim 2, further comprising:

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