JP5225629B2 - Work vehicle - Google Patents

Description

The present invention relates to a work vehicle, and more particularly to a work vehicle having a swivel base on a vehicle body for at least turning and raising / lowering a boom.

  For example, an aerial work vehicle is known as a work vehicle having a swivel on the vehicle body for making the boom at least turnable in a swinging manner. The aerial work vehicle has a bucket at the tip of a boom that can be swung up and down, and an operator gets into the bucket and swivels up and down to move the operator to an arbitrary high position. Can be done.

  The aerial work vehicle can store the boom and bucket compactly on the vehicle body, and an operator can get into the bucket in this stored state.

By the way, this aerial work vehicle is provided with equipment such as a control device for operating the boom in a swingable manner, and further provided with a cover that covers the equipment. (For example, refer to Patent Document 1).
JP-A-8-324986 (page 2-3, FIGS. 1, 4)

  However, in the aerial work vehicle of Patent Document 1, the side surface of the cover provided on the swivel base is configured in parallel with the boom. However, when the boom is stored obliquely with respect to the vehicle body, a part of the cover becomes the swivel base. There was a problem that it protruded into the space between the side surfaces of the vehicle body and hindered when trying to use this space. In particular, when the cover is formed as a rectangular parallelepiped in plan view, the corner of the cover protrudes into the space, and this problem becomes significant.

  Therefore, the present invention intends to propose a work vehicle that can secure a space between the side surface of the vehicle body and the swivel even if the swivel is provided with a cover.

According to the first aspect of the present invention, a vehicle body, a swivel mounted on the upper part of the vehicle body so as to be pivotable, a boom mounted on the swivel so as to be raised and lowered, and a vehicle mounted on a side of the vehicle body of the swivel. A swivel unit cover , comprising a swivel unit cover attached to the swivel base so that a side surface thereof contacts a boarding passage provided between the swivel base and a side surface of the vehicle body , the boom Is stored while being turned obliquely with respect to the vehicle body in the traveling state of the work vehicle, and the surface on the side of the entrance / exit passage of the swivel base cover is disposed parallel to the side surface of the vehicle body. To do.

  According to a second aspect of the present invention, in the work vehicle according to the first aspect, the boom has a bucket that is pivotable with respect to the boom at a tip of the boom, and the bucket is transverse to the boom in a traveling state of the work vehicle. The boom is stored in a state where the boom is turned obliquely with respect to the traveling direction of the vehicle.

According to a third aspect of the present invention, in the work vehicle according to the second aspect, the swivel base is disposed rearward in the vehicle body traveling direction, the bucket is stored forward of the vehicle body traveling direction in the vehicle body traveling state, and the getting-on / off passage is It is provided between the buckets from the side of the swivel .

  According to a fourth aspect of the present invention, in the work vehicle according to the third aspect of the present invention, the work vehicle further includes a boarding / alighting platform for getting on and off the vehicle from the rear of the vehicle body.

  According to a fifth aspect of the present invention, in the work vehicle according to the fourth aspect, the swivel unit cover is a cover that covers a plurality of devices having different sizes, and is relatively large among the plurality of devices. The device is arranged on a relatively large side of the space in the cover.

In a work vehicle in which the boom is stored obliquely with respect to the vehicle body, the side surface of the boom support plate that constitutes the swivel is also disposed obliquely with respect to the vehicle body. When attached, the corner of the cover protrudes into a boarding / alighting passage provided between the swivel base and the side surface of the vehicle body. However, in the invention of claim 1, since the side surface of the cover is arranged parallel to the side surface of the vehicle body, It is possible to prevent the portion from protruding into the entrance / exit passage .

  According to the invention of claim 2, since the bucket is stored in a state of turning in a lateral direction with respect to the boom, the boom is stored in a state of turning obliquely with respect to the vehicle traveling direction. Even when the vehicle is in a retracted posture for securing a large bucket capacity and a long boom length, the cover corners can be prevented from protruding.

  According to the third aspect of the present invention, when the side of the swivel base is used as an entry / exit passage for an operator, the cover corner portion can be prevented from protruding into the entry / exit passage, so that the entry into the bucket can be easily performed.

  According to the fourth aspect of the present invention, even when there are obstacles to getting on and off such as side grooves and walls on the side of the vehicle, it is possible to easily get into the bucket from the rear of the vehicle.

In the fifth aspect of the invention, since the devices having different sizes can be arranged by efficiently using the space in the cover, the volume in the cover can be reduced, and thereby , into the entrance / exit passage of the swivel unit cover. The protrusion of can be reduced.

  FIG. 1 shows an aerial work vehicle 1 as an example of a work vehicle according to an embodiment of the present invention. The aerial work vehicle 1 includes a vehicle body for running the vehicle, a boom 2 provided on the vehicle body so as to be capable of swinging up and down, and a bucket 3 on which an operator gets on the tip of the boom. By undulating and turning, the bucket 3 is moved to a high place so that an operator can work at the high place. The aerial work vehicle 1 can travel in the same manner as a general vehicle by setting the bucket 3 in a retracted posture in which the bucket 3 is disposed on the cab 4.

  Reference numeral 5 denotes a swivel for mounting the boom 2 in a swingable manner on the vehicle body. A boom support plate 6 for mounting the boom 2 in a freely swingable manner on the vehicle body and the boom support plate 6 swinging relative to the vehicle body. The base plate 7 is freely attached. The boom support plates 6 are plate-like members extending in the vertical direction, and are arranged in parallel on the base plate 7 as shown in FIGS. The boom 2 is attached so as to be able to move up and down by inserting the rear end 2b of the boom 2 between the two boom support plates 6 and rotatably supporting the pin 2 in the horizontal direction. Yes. The base plate 7 is composed of a plate-like member having a horizontal surface, and can be turned with respect to the vehicle body by being attached to a rotating shaft (not shown) attached to the vehicle body. Further, by providing a hoisting hydraulic cylinder 9 that supports the central portion 2c of the boom 2 and the swivel base 5 and a hydraulic motor (not shown) that rotates the swivel base 5, the expansion / contraction amount of the hoisting hydraulic cylinder 9 and the rotation of the hydraulic motor are provided. The front end 2a of the boom 2 can be moved according to the amount.

  Further, in the case of the present embodiment, the boom 2 is configured in multiple stages so that the boom 2 can be expanded and contracted in the length direction, and is configured to expand and contract according to the expansion / contraction amount of an expansion / contraction hydraulic cylinder (not shown) provided therein. Yes. Further, the bucket 3 is attached to the tip of the boom 2 so as to be pivotable with respect to the boom 2. With the above configuration, the worker on the bucket 3 can move to a high place and work.

  As described above, the aerial work vehicle 1 can travel the vehicle, but it is necessary to store the boom 2 and the bucket 3 in the traveling state in order to perform the vehicle traveling. In the case of the present embodiment, the swivel base 5 is disposed behind the vehicle body, and the boom 2 is stored so that the front end portion 2a thereof is disposed obliquely forward with respect to the vehicle body in the traveling state, and the front end portion 2a of the boom 2 is stored. The bucket 3 attached to is rotated and stored so as to be transverse to the vehicle traveling direction. By taking the storage posture in such a traveling state, a large bucket capacity and a long boom length are secured. 1 and 2 are diagrams of the aerial work vehicle 1 in a traveling state in which the boom 2 and the bucket 3 are stored.

  As described above, the aerial work vehicle 1 can travel by taking the retracted posture in the traveling state, but the state in which the vehicle is stopped in this retracted posture and the outrigger 10 is extended from the side of the vehicle body and grounded is The attitude when the worker gets into the bucket 3 before starting the aerial work with the aerial work vehicle 1 is set. In the case of this embodiment, in this posture, an entry / exit passage for an operator to get into the bucket 3 above the cab 4 from the rear of the vehicle body is provided. Next, this getting-on / off passage will be described.

  A first rear step 15 and a second rear step 16 are arranged at the rear part of the vehicle body so that the height thereof increases from the rear to the front of the vehicle. The first tool box 12, the second tool box 13, and the third tool box 14 are arranged on the side of the vehicle body so that the heights of the first tool box 12, the second tool box 13, and the third tool box 14 increase stepwise from the rear to the front of the vehicle body. Further, a first front step 20, a second front step 21, and a third front step 22 are arranged at the front portion of the vehicle body so that the height thereof increases from the rear to the front of the vehicle. By arranging these steps and the tool box in a stepwise manner from the rear of the vehicle toward the bucket 3, a boarding passage is formed, so that an operator can get into the bucket 3 from the rear of the vehicle.

  In the case of the present embodiment, the first rear step 15 and the second rear step 16 are arranged on the rear surface of the vehicle, and there are obstacles to getting on and off such as side grooves and walls on the side of the vehicle. Even if there is, it is possible to get into the bucket 3.

  By the way, the entrance / exit passage is configured to be able to get into the bucket 3 from the rear side of the vehicle body, so that the space between the turntable 5 and the vehicle side 11 is a part of the entrance / exit passage. On the other hand, as shown in FIGS. 1 and 2, on the side of the boom 2 of the swivel base 5, there are a hydraulic control valve 30, a control device 31, a battery for performing various operations in the operation of the boom 2 and work at high places. Equipment such as the charge control device 32, hydraulic piping 33, electrical wiring 34, and the like are attached, and a cover 40 is configured to cover the equipment, piping, and wiring, and the cover is provided on the side of the getting-on / off passage. 40 is arranged.

  Here, the shape of the cover that covers such a device is generally a rectangular parallelepiped. However, in the present embodiment, the boom 2 is stored obliquely with respect to the vehicle body. The side surface 6a of the boom support plate 6 to be supported is also arranged obliquely with respect to the vehicle body. When a rectangular parallelepiped cover is attached to the side of the swivel base in this state, the cover simply protrudes into the boarding / exiting passage. However, the corner portion of the cover partially protrudes into the boarding / alighting passage, thereby preventing boarding / alighting.

  Therefore, the aerial work vehicle 1 of the present invention is configured such that at least the side surface of the cover 40 is parallel to the side 11 of the vehicle body. Thereby, the partial protrusion with respect to the entrance / exit passage of a cover corner | angular part can be eliminated. Further, a support plate 41 is arranged on the inclined surface 6 b of the boom support plate 6 in parallel with the boom 2, and the devices can be arranged on the support plate 41. Since the boom support plate 6 is a strength member that supports the boom, the boom support plate 6 has a corresponding thickness. However, the boom support plate 6 is supported by the support plate 41 that is relatively thin with respect to the boom support plate 6. 6 can be arranged closer to the boom 2 by the difference in thickness between the support plate 41 and the support plate 41, and the protrusion of the cover 40 toward the entrance / exit passage can be further suppressed.

  By configuring the side surface of the cover 40 parallel to the vehicle body, the boom support plate 6 is inclined with respect to the vehicle in the inner space surrounded by the boom support plate 6, the support plate 41, and the cover 40. Due to the difference in thickness between the boom support plate 6 and the support plate, the size of the space is biased depending on the position in the cover. Here, in the present embodiment, as shown by the broken line in FIG. 1, the devices arranged in the larger space are devices having a large volume such as the hydraulic control valve 30 and the electronic control device 31, and the smaller space is used. The arrangement of the devices was optimized as a bundle of devices such as the battery charge control device 32 having a relatively small volume with respect to the devices and a bundle of harnesses 34 such as the hydraulic piping 33 and the electric wiring.

  Here, when the cover is a rectangular parallelepiped as described above, the volume in the cover is increased in accordance with the largest device such as the hydraulic control valve 30, but in the case of the present embodiment, the device Since the volume in the cover 40 can be further reduced by optimizing the arrangement, the side surface of the cover 40 can be brought closer to the swivel base side, and a wider boarding / alighting passage can be secured.

  In the description so far, the description has focused on securing the entrance / exit passage for getting into the bucket of the aerial work vehicle 1 by preventing the cover from protruding. For example, the space can be used as a luggage storage place for tools or the like in the vehicle running state. In this case, if the available space is large, the size of the luggage to be placed can be increased.

  In the above description, the work vehicle has been described as an example of an aerial work vehicle. However, if the work vehicle stores the boom 2 obliquely with respect to the vehicle traveling direction, the configuration of the present application is applied. As a result, a large space can be provided between the swivel base cover and the side surface of the vehicle body, and the space can be used effectively.

It is a side view in the running posture of work vehicle 1 concerning the present invention. It is a top view in the running posture of work vehicle 1 concerning the present invention.

Explanation of symbols

1: High work place vehicle 2: Boom 3: Bucket 5: Turntable 6: Boom support plate 7: Base plate 11: Vehicle body side surface 12: First tool box 13: Second tool box 14: Third tool box 15: First Rear step 16: second rear step 20: first front step 21: second front step 30: hydraulic control valve 31: control device 32: battery charge control device 40: swivel base cover

Claims (5)

A car body, and a swivel mounted on the upper part of the car body so as to be freely rotatable;
A boom attached to the swivel so that it can be raised and lowered;
A swivel base cover attached to the side surface of the car body of the swivel base, the swivel part cover attached to the swivel base so that a side surface thereof contacts a boarding passage provided between the swivel base and the car body side surface ; ,
A work vehicle equipped with
The boom is stored in a state of turning obliquely with respect to the vehicle body in the traveling state of the work vehicle,
A work vehicle characterized in that a surface of the turntable cover on the entrance / exit passage side is arranged in parallel to the side surface of the vehicle body. A bucket that is pivotable with respect to the boom at the tip of the boom;
The bucket is stored in a state of turning in a lateral direction with respect to the boom in a traveling state of the work vehicle, whereby the boom is stored in a state of turning obliquely with respect to the vehicle traveling direction. The work vehicle according to claim 1. The swivel base is disposed rearward in the vehicle body traveling direction, the bucket is stored forward in the vehicle body traveling direction in the vehicle body traveling state, and the getting-on / off passage is provided between the bucket from the side of the swivel base. The work vehicle according to claim 2. The work vehicle according to claim 3, further comprising a boarding / alighting platform for boarding / alighting from the rear of the vehicle body to the boarding / alighting passage. The swivel base cover is a cover that covers a plurality of devices having different sizes, and a relatively large device among the plurality of devices is disposed on a relatively large side of the space in the cover. The work vehicle according to claim 4.

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