JP5514434B2 - Self-propelled aerial work vehicle and battery mounting position determination method for self-propelled aerial work vehicle - Google Patents

Description

  The present invention relates to a self-propelled aerial work vehicle used for aerial work and a method for determining a battery mounting position in a self-propelled aerial work vehicle, and more specifically, a lifting means comprising a scissor link mechanism on a chassis. A self-propelled aerial work vehicle characterized by the arrangement of a power battery mounted on the self-propelled aerial work vehicle, and a mounting position of the battery. Regarding the determination method.

  Conventionally, for example, ceiling work at construction sites, lighting installation work or painting work at ceilings (including the back of the ceiling) and wall heights have been assembled as scaffolds, but recently labor saving Self-propelled aerial work platforms are often used for safety.

  As an example, this self-propelled aerial work vehicle has an operator or the like placed on a chassis 130 equipped with traveling means 133 (wheels in the illustrated example) such as wheels and crawlers as shown in FIGS. A self-propelled aerial work vehicle including a deck 110 that moves up and down and a lifting mechanism 120 that lifts and lowers the deck 110 on a chassis 130. The vehicle is equipped with traveling means such as wheels driven by a motor. Because it is highly mobile and easy to operate, it is widely used for indoor electrical work and interior work.

  In such a self-propelled aerial work vehicle 100, a battery 134 as a power source is mounted on the chassis 130, and power is supplied from the battery 134 to drive wheels for self-propulsion and to raise and lower the deck 110. Since both of them are carried out, a relatively large battery 134 is mounted. For this reason, various types of battery arrangements that secure the mounting space for such a battery 134 and improve the maintainability are provided. Has also been proposed.

  As an example of such a self-propelled aerial work vehicle, in a self-propelled aerial work vehicle in which the deck is mounted on the chassis via a telescopic mast so that the deck can be raised and lowered, the maintainability of the battery provided on the chassis is improved. In order to achieve this, the battery is accommodated in the battery housing in the width direction of the chassis, and the battery is inserted and inserted from either side of the chassis. A self-propelled aerial work vehicle configured to be able to be pulled out has been proposed (see Patent Document 1).

  In addition, it has been proposed that the battery has a function as a weight for stabilizing the self-propelled aerial work vehicle. As an example of such a high work vehicle, the deck can be raised and lowered by a scissor link mechanism. In the self-propelled aerial work vehicle, the width of the chassis is made larger than the width of the deck, and a pair of batteries are accommodated on the left and right sides of the chassis at approximately the middle position in the longitudinal direction of the chassis. Thus, it has also been proposed to improve the stability of the self-propelled aerial work vehicle in the width direction when the work table is raised (see Patent Document 2).

Prior art document information of the present invention includes the following.
JP 2004-299851 A JP 2006-206260 A

  In the self-propelled aerial work vehicle described in Patent Documents 1 and 2 introduced above, the battery is mounted at a substantially central position in the front-rear direction of the traveling direction of the chassis (FIG. 1 of Patent Document 1). , See FIG. 1 of Patent Document 2).

  Here, among the above prior arts, for example, in the configuration in which the deck is raised and lowered by the telescopic mast as in the self-propelled aerial work vehicle described in Patent Document 1, the deck is lowered or raised. However, the center of gravity of a self-propelled aerial work vehicle in plan view does not change.

  However, as introduced in Patent Document 2, for example, in the self-propelled aerial work vehicle configured to move the deck up and down by the scissor link mechanism, the self-propelled aerial work vehicle 100 shown in FIGS. Similarly, the lower end of one arm 121 ′ of the X-shaped link 121a constituting the lowest stage of the scissor link mechanism 120 is pivotally attached to a predetermined position on the one end 130a side of the chassis 130, and the other arm 121 ′. Since the lower end of 'is mounted on the chassis so as to be movable in the longitudinal direction of the chassis 130, the lowest rise of the deck 110 shown in FIG. 6 (B) from the lowest position of the deck 110 shown in FIG. 5 (B). When the scissor link mechanism 120 is extended to the position, the scissor link mechanism 120 is biased toward the one end 130a side of the chassis 130, so that the center of gravity of the entire self-propelled aerial work vehicle 100 is obtained. Moves to one end 30a side of the chassis 30.

  In addition, as shown in FIG. 6B, an operation panel 113 for operating the self-propelled aerial work platform 100, steering, raising and lowering the deck 110, etc. is provided on the one end 110a side of the deck 110. In this case, the operator gets on the deck 110 near the one end 110a and operates the operation panel 113. Therefore, the weight of the worker is further applied as a load to the one end 110a side of the deck 110. 6B easily falls in the direction indicated by the arrow in FIG.

  Furthermore, as shown in FIG. 7, for example, when the foundation cannot be brought close to the wall surface due to the foundation overhanging the ground surface such as the wall surface on which the work should be performed, the deck 110 is placed on the wall surface. For example, it is convenient if the deck 110 can be brought close to the wall surface by sliding the deck 110 to the wall surface side, for example. If the worker gets on the portion that is pushed out by the slide of the deck 110, the self-propelled aerial work vehicle 100 is more likely to fall in the direction indicated by the arrow in FIG. .

  For this reason, in a self-propelled aerial work platform equipped with a sers link mechanism as an elevating mechanism, particularly a relatively small self-propelled aerial work vehicle that is easily affected by weight shift of an operator, such a slide mechanism is provided on the deck. It was difficult to adopt.

  In order to compensate for the movement of the center of gravity caused by the extension of the scissor link mechanism, the movement of the center of gravity caused by the sliding of the deck, and the movement of the load accompanying the change in the boarding position of the operator, for example, Although it is conceivable that the counterweight 150 or the like is attached in advance to the other end 130b side, the weight of the self-propelled aerial work vehicle 100 is greatly increased by such attachment of the counterweight 150, and is particularly small and light. Therefore, if such a counterweight is attached to a relatively small self-propelled aerial work vehicle that is easy to use, the advantages will be lost.

  In the configuration of the self-propelled aerial work vehicle 100 shown in FIGS. 5 and 6, a total of four wheels 133 are provided as a traveling means, one pair on each of the both ends 130 a and 130 b in the longitudinal direction of the chassis 130. This type of vehicle is driven by a motor using any one of these four wheels (a total of two wheels, in some cases with a pair of wheels) as a driving wheel. A suspension mechanism such as a spring is generally not used for the wheel 133 of the work vehicle 100, and the wheel 133 is poor in conformity to undulations and unevenness of a running surface such as a road surface and a floor surface.

  Therefore, when there are undulations or irregularities on the running surface, if three of the four wheels are in contact with the ground, the remaining one wheel will float off the road surface. Is a driving wheel, the self-propelled aerial work vehicle 100 cannot transmit the driving force to the traveling surface.

  On the other hand, the use of the suspension mechanism as described above complicates the device configuration and increases the number of assembly processes due to an increase in the number of parts, thereby ensuring the driving force of the drive wheels with a simpler structure. It is desired to obtain a configuration that can be transmitted to the running surface.

  Therefore, the present invention has been made to solve the above-mentioned drawbacks of the prior art, and it is well balanced even when a counterweight or the like is not provided or the weight of the counterweight is reduced. This is a self-propelled high place where the one end side of the deck can be pushed forward, and the driving force of the driving wheels during traveling can be reliably transmitted to the traveling surface. The purpose is to provide a work vehicle.

In order to achieve the above object, the self-propelled aerial work vehicle 1 and the battery mounting position determination method in the self-propelled aerial work vehicle of the present invention include a chassis 30 having travel means 33 such as wheels and crawlers, Scissor link mechanism composed of a deck 10 that moves up and down on the chassis 30 and a plurality of stages of X-shaped links 21a to 21d and 22a to 22d that are arranged between the chassis 30 and the deck 10 to raise and lower the deck 10. 20, the lower ends of the arms 211, 221 constituting the X-shaped links 21a, 22a in the lowermost stage of the scissor link mechanism 20 are pivotally attached to either one end 30a in the front-rear direction of the running direction of the chassis 30. At the same time, the lower ends of the other arms 212 and 222 are slidably mounted on the chassis 30, and are further installed at the uppermost stage of the scissor link mechanism 20. The upper ends of the arms 211 and 221 constituting the X-shaped links 21d and 22d are slidably attached to the bottom of the deck 10, and the upper ends of the other arms 212 and 222 are the same as the one end 30a of the chassis 30. In the self-propelled aerial work vehicle 1 pivotally attached to the bottom of the deck 10 near one end 10a in the direction,
In a plan view of the self-propelled aerial work platform 1 in the state where the deck 10 is lowered, the intersection x of the diagonal lines DL of the corners a to d of the chassis 30 having a rectangular plane and the other of the chassis 30 The battery 34 is placed so that the center of gravity G _L , G _{LS of the} self-propelled aerial work vehicle 1 falls within a triangle (triangle x, c, d) formed by three points c, d at the end 30b. It arrange | positions in the said chassis 30 in the other end 30b side of the said chassis 30 (Claim 1, Claim 9).

  In the self-propelled aerial work vehicle 1 having the above-described configuration, the traveling means 33 is a pair of wheels 33a, 33b; 33c, 33d provided on both ends 30a, 30b in the longitudinal direction of the chassis 30. It is preferable that at least one of the pair of wheels 33c and 33d (the wheel 33d in the illustrated example) provided on the other end 30b side of the chassis 30 be a driving wheel.

Furthermore, in the self-propelled aerial work vehicle 1 having the above-described configuration and the battery mounting position determination method in the work vehicle, a pair of the traveling means 33 is provided on each of both end sides of the chassis 30 in the front-rear direction. And at least one of a pair of wheels 33c, 33d provided on the other end 30b side of the chassis 30 as drive wheels, and the self-propelled aerial work vehicle 1 in the state where the deck 10 is lowered to the lowest level. In plan view , intersection points x of diagonal lines DL connecting the ground points a, b, c and d between the running surface and the wheels 133, and the ground points c and d between the running surface and the wheels at the other end 30b of the chassis. as the center of gravity of the self-propelled aerial 1 falls within the triangle formed by the three points, it is possible to place the battery 34 to the chassis 30 at the other end 30b of the undercarriage (claim , 10).

Furthermore, the center of gravity G _H in a plan view of the aerial 1 at the uppermost of the deck 10, G _HS [FIG. 2 (A), the FIG. 4 (A) see] it is close to the intersection x of the diagonal DL so that the position to be, it is preferable to dispose the battery 34 (claim 4, claim 11).

  The battery 34 may be arranged in the chassis 30 between the wheels 33c and 33d provided on the other end 30b side of the chassis 30 (Claim 5). ).

In this case, the motor 35 is adjacent to the battery 34 at one end 30a side of the chassis 30 on the co-when disposed in the chassis 30, (wheel 33d in the illustrated example) the driving wheel with the motor 35 and a chain and sprocket The pulleys may be connected via power transmission means such as a pulley belt (Claim 6).

  Further, in the self-propelled aerial work vehicle 1 having the above-described configuration, the pair of wheels 33a and 33b disposed on the one end 30a side of the chassis 30 is configured to be steerable and disposed on the other end 30b side of the chassis 30. The pair of wheels 33c and 33d may be configured to be non-steered (claim 7).

  In addition, the floor surface of the deck 10 (see the second floor surface 12b in the example shown in FIGS. 3B and 4B) slides in the direction in which the one end 10a of the deck 10 extends. It is good also as what can be comprised (Claim 8).

  As described above, according to the self-propelled aerial work vehicle 1 of the present invention in which the battery 34 is disposed, the scissor link mechanism 20 is employed as the lifting mechanism of the deck 10 and the deck 10 is raised. Even in such a state, it is possible to prevent the center of gravity of the self-propelled aerial work vehicle 1 from being greatly biased toward the one end 30a side of the chassis 30, and as a result, the weight of the counterweight can be reduced without using a counterweight or the like. Even in this case, the stability of the self-propelled aerial work vehicle 1 is improved and safe, and the self-propelled aerial work vehicle 1 with reduced vehicle weight can be provided.

In addition, when the traveling means provided in the chassis 30 is a pair of wheels 33a to 33d provided at both ends 30a and 30b in the longitudinal direction of the chassis 30, respectively, the traveling means is provided on the other end 30b side of the chassis 30. By using at least one of the wheels 33c and 33d (33d in the illustrated embodiment) as a driving wheel, the center of gravity G _L and G _LS when the deck 10 is lowered is on the other end 30b side of the chassis 30 provided with the driving wheel. Therefore, the load on the driving wheel 33d is increased, and the driving wheel 33d is not easily lifted from the traveling surface due to undulations or irregularities on the traveling surface, and the driving wheel 33d is preferably prevented from slipping. As a result, the driving force of the driving wheel against the traveling surface can be reliably transmitted.

Further, the deck 10 is raised by arranging the battery 34 so that the center of gravity G _H and G _HS in plan view of the aerial work vehicle 1 at the highest rise of the deck 10 is close to the intersection point x of the diagonal line DL. The stability of the self-propelled aerial work vehicle 1 at the time of aerial work performed in a state could be further increased.

In the configuration in which the four wheels 33 (33a to 33d) are provided in the chassis 30 as described above, the battery 34 is disposed between the wheels 33c and 33d provided on the other end 30b side of the chassis 30. By providing an opening and an opening / closing door for opening and closing the opening on the side surface on the other end 30b side of the battery 30, the operation of drawing out the battery 34 and the like can be easily performed, and the maintainability can be improved.

  In particular, a motor 35 for driving the drive wheels 33d is provided adjacent to the battery 34 on the one end 30a side of the chassis 30, and the motor 35 and the drive wheels 33d are provided with, for example, a chain and a sprocket, a pulley and a pulley belt, etc. Thus, it is possible to prevent the motor 35 and the like from being obstructed when the battery 34 is pulled out.

  Further, the pair of wheels 33a and 33b provided on the one end 30a side of the chassis 30 is configured to be steerable, and the wheel including the pair of wheels 33c and 33d provided on the other end 30b side of the chassis 30, that is, the drive wheels 33d. By adopting non-steering, it is possible to steer the self-propelled aerial work vehicle 1 without adopting a complicated structure that is necessary when steering the drive wheels or requiring a space for steering the wheels. Since the space between the wheels 33c and 33d can be widened, a battery having a relatively large capacity can be mounted.

  Furthermore, the arrangement of the battery 34 described above allows the floor surface (second floor surface 12b) to slide forward on the one end 10a side of the deck 10 which is the same side as the one end 30a side of the chassis 30. As described with reference to FIG. 7, it is easy for an operator to get on the protruding portion of the deck 10 even when working at a high place on a wall or the like where the foundation or the like overhangs and the chassis 30 cannot be approached. As a result, the stability of the self-propelled aerial work platform could be improved even when this configuration was adopted.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  1-4, the aerial work vehicle 1 of the present invention includes a deck 10 that moves up and down on a chassis 30 having traveling means 33 (33a to 33d) via an elevating mechanism 20 including a scissor link mechanism.

  The deck 10 is provided with a protective fence 11 and the like, so that an operator, a luggage, etc. boarded on the deck 10 are prevented from falling. As shown in FIGS. 3B and 4B, the deck 10 is configured as an overhanging deck or an extended deck in which the floor surface 12 of the deck 10 slides and protrudes from the one end 10a side of the deck 10. In this case, the floor surface of the deck 10 is constituted by a double of the first floor surface 12a and the second floor surface 12b. However, the deck floor 12 may be a fixed floor that does not slide as shown in FIGS.

  Reference numerals 13 in FIGS. 1B and 1C are an operation panel 13 attached to the protective fence 11 on one end side 10a of the deck 10, and an operator boarded on the deck 10 can use this operation panel. By operating the switches provided at 13, the self-propelled aerial work vehicle 1 can be operated for running, steering, and raising / lowering the deck 10.

  The above-mentioned scissor link mechanism 20 which is an elevating mechanism has X-shaped links formed by crossing arms 211, 212 and 221, 222 of the same length in an X shape and pivoting the intersections of both arms ( 21a to 21d and 22a to 22d) are arranged in a single stage, and X-shaped link mechanisms 21 and 22 configured by connecting the X-shaped links (21a to 21d and 22a to 22d) in a plurality of stages are connected to a chassis 30. Are formed on both sides in the width direction (hereinafter referred to as “left and right”), respectively (see FIGS. 2B and 2C). In the illustrated embodiment, Each of the X-shaped links constituting the X-shaped link mechanisms 21 and 22 is set to one stage, and a total of four stages (21a to 21d, 22a to 22d) are pivotally connected to form the scissor link mechanism 20 described above. doing.

  In FIG. 2C, the arms disposed on the center side of the scissors link mechanism 20 are described as inner arms 211 and 221 and the arms disposed on the outer side are outer arms 212 and 222. Each X-shaped link 21a 21d and 22a to 22d are connected between the upper ends of the lower inner arms 211 and 221 and the lower ends of the upper outer arms 212 and 222, and the upper ends of the lower outer arms 212 and 222 and the upper inner arm. Left and right X-shaped link mechanisms 21 and 22 are formed so as to alternately connect the lower ends of 211 and 221 [see FIG. 2 (B)].

  Then, the lower end portion of one arm (inner arms 211 and 221 in the illustrated example) of the lowermost X-shaped links 21a and 22a is pivotally attached to the one end 30a side of the chassis 30, and the lowermost X-shaped link 21a. Of the other arm (outer arms 212 and 222 in the illustrated example) is slid in the longitudinal direction of the chassis 30 at a position near the other end 30b of the chassis 30 with respect to the pivot position of the inner arms 211 and 221. Further, the upper ends of the inner arms 211, 221 of the uppermost X-shaped links 21d, 22d are supported on the bottom surface of the deck 10 so as to be slidable in the longitudinal direction of the deck 10, and the outer arms 212, The upper end of 222 is pivotally attached to the one end 10 a side of the deck 10.

  Further, the intersection of the left and right X-shaped links 21d, 21d and 22a, 22a at the uppermost and lowermost stages is the pivot shaft 23b together with the outer arms 212, 222 and the inner arms 211, 221 constituting both X-shaped links. , 23a.

  In addition, at the intersections of the left and right X-shaped links 21b, 21c and 22b, 22c in the intermediate stage, the inner arm and the outer arm are separately connected to each other by a pivot shaft.

  Further, the lifting mechanism 20 includes a hydraulic cylinder 24 that moves a pair of left and right X-shaped links 21a to 21d and 22a to 22d that are pivotally connected to a plurality of upper and lower stages in the vertical direction.

  The hydraulic cylinder 24 is installed between the lowermost X-shaped links 21a and 22a and the brackets 25 and 26 provided on the intermediate X-shaped links 21c and 22c, respectively. , And the deck 10 moves up and down while maintaining a horizontal state.

  As shown in FIGS. 1B and 1C, the chassis 30 on which the scissor link mechanism 20 and the deck 10 are mounted has a motor 35, a battery 34, and the like in the illustrated embodiment. A box-shaped main body 31 that functions as a casing for housing equipment and a frame 32 mounted on the main body 31 are provided, and the lower end of the scissor link mechanism 20 is placed on the chassis 30 via the frame 32. Is attached.

Body 31. mentioned above provided in the lower portion of the frame 32 in the plan view shown in FIG. 1 (A), are made form a rectangle having a length direction in the left-right directions, the length direction of the main body 31 Wheels 33 (33a to 33d), which are traveling means, are respectively attached to the axles protruding in the width direction.

  In the main body 31 of the chassis 30, as described above, the battery 34, the motor 35 that rotates by supplying power from the battery 34, and the power transmission means that transmits the rotational output of the motor 35 to the drive wheels are housed. At the same time, the rotational driving force of the motor 35 is transmitted to at least one (33d in the illustrated example) of the pair of wheels 33c and 33d provided on the other end 30b side of the chassis 30, preferably both. Thus, the wheel 33d that has received the power transmission from the motor 35 in this manner serves as a drive wheel.

  In this embodiment, the pair of wheels 33a and 33b provided on the one end 30a side of the chassis 30 is a free wheel (non-driven), and the pair of wheels 33a and 33b are formed as steering wheels. By making the rudder angle controllable by the operation using the operation panel 13 described above, the self-propelled aerial work vehicle 1 can be driven in a desired direction.

As shown in FIGS. 1A and 1B, the battery 34 is disposed in the main body 31 of the chassis 30 on the other end 30b side of the chassis 30 as shown in FIGS. 1A, in the plan view shown in FIG. 1A, the intersection point x of the diagonal line DL connecting the ground contact points a, b, c and d between the running surface and the wheel and the other end 30b of the chassis 30 Assuming a triangle formed by connecting the ground contact points c and d of a pair of wheels with a straight line, the center of gravity G _L when the above-described deck 10 descends to the lowest level [Fig. 3 includes a second floor 12b on which the deck 10 slides. in the configuration shown, including the center of gravity G _LS in state where the Seridasa the second floor surface 12b; configured FIG 3 (a) see] is located this assumption triangle x, c, in the d Has been.

  In the illustrated embodiment, the battery 34 is disposed in the main body 31 of the chassis 30 between the pair of wheels 33c and 33d provided on the other end 30b side of the chassis 30. The battery is preferably configured so that the center of gravity of the battery is located within the triangle x, c, d.

In general, the self-propelled aerial work vehicle 1 is configured to be able to run when the deck 10 is in the lowest position in order to avoid the danger of falling. By arranging G _L and G _LS in the triangles x, c and d described above, the vehicle weight relative to the other end 30b side of the chassis 30, that is, the drive wheel 33d side when the self-propelled aerial work vehicle 1 is traveling. The distribution of is large.

  As a result, the driving wheel 33d is pressed against the traveling surface such as a road surface or a floor surface, and the driving force from the motor 35 is reliably transmitted to the traveling surface via the driving wheel 33d without causing a slip or the like. At the same time, for example, even when a state where only three of the four wheels are grounded due to unevenness on the running surface occurs, the drive wheel 33d provided on the other end 30b side of the chassis 30 is provided. Since the two wheels 33c and 33d including are maintained in contact with the traveling surface, the drive wheels 33d are prevented from idling away from the traveling surface.

Further, by arranging the battery 34 so that the center of gravity G _L , G _LS when the deck 10 is at the lowest position falls within the above-described triangles x, c, d, the center of gravity G _H when the deck 10 is at the highest position [ Further, the center of gravity G _HS when the floor of the deck 10 is slid and pushed out (see FIG. 4A) can be brought closer to the intersection point x of the diagonal line DL described above. Thus, the stability of the self-propelled aerial work vehicle 1 during the aerial work can be increased, and the risk of falling or the like can be greatly reduced.

  As an example, the self-propelled aerial work vehicle 1 shown in the illustrated embodiment is capable of raising the floor height of the deck 10 to a maximum of 4 m above the ground, and the total weight including the battery 34 is about 550 kg. The self-propelled aerial work vehicle 1 belongs to a relatively small category.

  The weight breakdown of the self-propelled aerial work vehicle 1 is that the weight of the deck 10 is about 50 kg, the weight of the scissor link mechanism 20 is about 200 kg, and the weight of the chassis 30 is about 300 kg. When two batteries 34 having a capacity of about 100 (Ah) are mounted, the weight of the battery 34 alone is about 70 to 80 kg out of the weight of the chassis 30, that is, about 1/4 of the weight of the chassis 30. It will be a thing.

Therefore, by arranging the battery 34 in the chassis 30 at the optimum position, the position of the center of gravity G _L , G _LS , G _H , G _HS of the self-propelled aerial work vehicle 1 is increased without providing a counterweight or the like. The battery shown in the figure can be adjusted to a position where the driving force of the driving wheels can be reliably transmitted to the running surface when traveling with the deck 10 being lowered and having excellent stability during work. According to the arrangement 34, the center of gravity _GH in plan view is equal to the triangles x and c described above even when the deck 10 is at its highest position (however, the floor surface is not protruding) as shown in FIG. , D, and close to the intersection point x of the diagonal line DL. Further, in the state shown in FIG. Is also shown in FIG. The center of gravity G _HS in plan view as is located at a position close to the intersection x of the diagonal lines DL, self-propelled aerial platforms 1 in either state in a stable state.

  In the arrangement of the battery 34 described above, the motor 35 for driving the drive wheels 33d is located on the one end 30a side of the chassis 30 with respect to the battery 34 in a state where the axial direction of the output shaft is oriented in the width direction of the chassis 30. The output shaft of the motor 35 and one of the wheels 33c and 33d 33d provided on the other end 30b side of the chassis 30 are connected to a sprocket and a chain, a pulley and a pulley belt, and other power transmission mechanisms ( In the present embodiment, although not shown in detail, the drive wheel 33d is configured to be driven by being connected by a sprocket and a chain).

  With the arrangement of the motor 35, an opening is provided in the side surface of the main body 31 on the other end 30b side of the chassis 30 housing the battery 34, and an opening / closing door for opening and closing the opening is provided as necessary. In the case where the battery 34 accommodated in the main body 31 can be pulled out through the opening that appears when the door is opened, the above-described motor 35 and power transmission means do not interfere when the battery 34 is pulled out. Maintenance and inspection work of the battery 34 can be facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of the self-propelled aerial work vehicle (deck descending) of this invention, (A) is a top view (however, only a chassis part), (B) is a front view, (C) is a right view. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of the self-propelled aerial work vehicle (deck rise) of this invention, (A) is a top view (however, only a chassis part), (B) is a front view, (C) is a right view. It is a figure of another self-propelled aerial work vehicle (deck descending) of this invention, (A) is a top view (however, only a chassis part), (B) is a front view, (C) is a right view. . It is a figure of another self-propelled aerial work vehicle (at the time of deck raising) of the present invention, (A) is a top view (however, only a chassis part), (B) is a front view, (C) is a right view. . It is a figure of a self-propelled aerial work vehicle (when the deck is lowered) that does not have the configuration of the present application in which the battery is arranged at the center of the chassis, (A) is a plan view (however, only the chassis part), and (B) is a front view. , (C) is a right side view. It is a figure of a self-propelled aerial work vehicle (when the deck is raised) that does not have the configuration of the present application in which the battery is arranged in the center of the chassis, (A) is a plan view (however, only the chassis part), (B) is a front view , (C) is a right side view. Schematic which shows the arrangement | positioning condition of the self-propelled aerial work vehicle in the work site where the foundations, such as a building, overhang.

Explanation of symbols

1 self-propelled aerial work platform 10 deck 10a one end (of deck 10)
10b The other end (of deck 10)
DESCRIPTION OF SYMBOLS 11 Guard fence 12 Floor surface 12a 1st floor surface 12b 2nd floor surface 13 Control panel 20 Lifting mechanism (scissors link mechanism)
21, 22 X-shaped link mechanism (left and right)
21a-21d, 22a-22d X-shaped link 211, 221 One of the arms (inner arm)
212, 222 The other arm (outer arm)
23a, 23b Pivoting shaft 24 Hydraulic cylinder 25, 26 Bracket (for mounting hydraulic cylinder)
30 chassis 30a one end (of chassis 30)
30b The other end (of the chassis 30)
31 Main body 32 Frame 33 (33a to 33d) Traveling means (wheel)
34 Battery 35 Motor DL Diagonal line x Diagonal line intersections a to d Corner of the chassis in plan view _GL Center of gravity of the self-propelled aerial work platform (no deck descending, no floor surface protruding)
G _LS Self-propelled aerial work platform center of gravity (deck descending, floor approaching)
Center of gravity of _GH self-propelled aerial work platform (deck lift, no floor bulge)
Center of gravity of G _HS self-propelled aerial work platform (deck lift, floor surface approach)
100 Self-propelled aerial work platform 110 Deck 110a One end (of deck 110)
110b The other end (of deck 110)
113 Control panel 120 Elevating mechanism (scissors link mechanism)
121a X-shaped link (bottom level)
121 'One arm (inner arm)
121 '' other arm (outer arm)
130 chassis 130a one end (of chassis 130)
130b The other end (of chassis 130)
133 Traveling means (wheels)
134 Battery 150 Counterweight

Claims (11)

A scissor link mechanism comprising a chassis having traveling means; a deck that moves up and down on the chassis; and a plurality of X-shaped links that are arranged between the chassis and the deck to raise and lower the deck, The lower end of one arm that forms the X-shaped link at the bottom of the scissor link mechanism can be pivotally attached to one end in the longitudinal direction of the chassis, and the lower end of the other arm can slide on the chassis The upper end of one arm constituting the X-shaped link in the uppermost stage of the scissor link mechanism is slidably attached to the bottom of the deck, and the upper end of the other arm is connected to one end of the chassis. In a self-propelled aerial work platform pivoted to the bottom of the deck near one end in the same direction,
In plan view of the self-propelled aerial work vehicle with the deck lowered to the bottom, formed by three intersections of diagonal lines at each corner of the chassis having a rectangular plane and a corner at the other end of the chassis A self-propelled aerial work vehicle, characterized in that a battery is disposed in the chassis on the other end side of the chassis so that the center of gravity of the self-propelled aerial work vehicle enters a triangle. The traveling means comprises a pair of wheels provided on each of both end sides in the longitudinal direction of the chassis,
The self-propelled aerial work vehicle according to claim 1, wherein at least one of a pair of wheels provided on the other end side of the chassis is a drive wheel. A scissor link mechanism comprising a chassis having traveling means; a deck that moves up and down on the chassis; and a plurality of X-shaped links that are arranged between the chassis and the deck to raise and lower the deck, The lower end of one arm that forms the X-shaped link at the bottom of the scissor link mechanism can be pivotally attached to one end in the longitudinal direction of the chassis, and the lower end of the other arm can slide on the chassis The upper end of one arm constituting the X-shaped link in the uppermost stage of the scissor link mechanism is slidably attached to the bottom of the deck, and the upper end of the other arm is connected to one end of the chassis. In a self-propelled aerial work platform pivoted to the bottom of the deck near one end in the same direction,
The traveling means comprises a pair of wheels provided on each of both end sides in the longitudinal direction of the chassis,
At least one of a pair of wheels provided on the other end side of the chassis is a drive wheel,
In a plan view of the self-propelled aerial work vehicle in the state where the deck is lowered, an intersection of diagonal lines respectively connecting a grounding point between the traveling surface and each wheel , a traveling surface and each wheel at the other end of the chassis, A battery is disposed in the chassis on the other end side of the chassis so that the center of gravity of the self-propelled aerial work vehicle enters a triangle formed by three ground contact points. Type aerial work vehicle. 4. The battery according to claim 1 , wherein the battery is arranged such that a center of gravity of the aerial work vehicle in a plan view when the deck is at the highest position is close to an intersection of the diagonal lines. The self-propelled aerial work vehicle described in the section.   The self-propelled aerial work vehicle according to claim 2 or 3, wherein the battery is disposed in the chassis between the wheels provided on the other end side of the chassis.   6. A self-propelled vehicle according to claim 5, wherein a motor is disposed in the chassis adjacent to the battery on one end side of the chassis, and the motor and the driving wheel are connected via a power transmission means. Type aerial work vehicle.   The pair of wheels arranged on one end side of the chassis is configured to be steerable, and the pair of wheels arranged on the other end side of the chassis is configured to be non-steered. 6. The self-propelled aerial work vehicle described in 6.   The self-propelled aerial work vehicle according to any one of claims 1 to 7, wherein the deck slides in a direction in which the one end of the deck extends and can be pushed out. A scissor link mechanism comprising a chassis having traveling means; a deck that moves up and down on the chassis; and a plurality of X-shaped links that are arranged between the chassis and the deck to raise and lower the deck, The lower end of one arm that forms the X-shaped link at the bottom of the scissor link mechanism can be pivotally attached to one end in the longitudinal direction of the chassis, and the lower end of the other arm can slide on the chassis The upper end of one arm constituting the X-shaped link in the uppermost stage of the scissor link mechanism is slidably attached to the bottom of the deck, and the upper end of the other arm is connected to one end of the chassis. In a self-propelled aerial work platform pivoted to the bottom of the deck near one end in the same direction,
In plan view of the self-propelled aerial work vehicle with the deck lowered to the bottom, formed by three intersections of diagonal lines at each corner of the chassis having a rectangular plane and a corner at the other end of the chassis The battery in the self-propelled aerial work vehicle is characterized in that a battery is disposed in the chassis on the other end side of the chassis so that the center of gravity of the self-propelled aerial work vehicle enters the triangle. Mounting position determination method. A scissor link mechanism comprising a chassis having traveling means; a deck that moves up and down on the chassis; and a plurality of X-shaped links that are arranged between the chassis and the deck to raise and lower the deck, The lower end of one arm that forms the X-shaped link at the bottom of the scissor link mechanism can be pivotally attached to one end in the longitudinal direction of the chassis, and the lower end of the other arm can slide on the chassis The upper end of one arm constituting the X-shaped link in the uppermost stage of the scissor link mechanism is slidably attached to the bottom of the deck, and the upper end of the other arm is connected to one end of the chassis. In a self-propelled aerial work platform pivoted to the bottom of the deck near one end in the same direction,
The traveling means comprises a pair of wheels provided on each of both end sides in the longitudinal direction of the chassis,
At least one of a pair of wheels provided on the other end side of the chassis is a drive wheel,
In a plan view of the self-propelled aerial work vehicle in the state where the deck is lowered, an intersection of diagonal lines respectively connecting a grounding point between the traveling surface and each wheel , a traveling surface and each wheel at the other end of the chassis, A battery is disposed in the chassis on the other end side of the chassis so that the center of gravity of the self-propelled aerial work vehicle enters a triangle formed by three ground contact points. A method for determining the battery mounting position in an aerial work platform.   10. The battery is mounted on the other end side of the chassis such that the center of gravity of the aerial work vehicle when viewed from the top when the deck is at the highest position is close to the intersection of the diagonal lines. The battery mounting position determination method in the self-propelled aerial work vehicle according to 10.

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