JP2006256345A - Collision preventing device to sign-indicating vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collision preventing device to a sign-indicating vehicle with high safety having an easy mechanism for rotating a cushion drum and allowing reduction of preparing cost and confirmation of a tail lamp from a rear side in a state of the cushion drum, etc. arranged at a working position. <P>SOLUTION: In this sign-indicating vehicle, a sign-indicating device 2 for indicating under construction, etc. on a road is mounted. A mounting member 5 is supported vertically rotatably around a rotary shaft 7 at a rear end of a deck 1, and the drum 4 is mounted on the mounting member 5. A driving shaft of a driving motor 6 is coaxially connected to the rotary shaft 7. The drum 4 is arranged at the working position and a storing position via the mounting member 5 by rotating the driving shaft of the driving motor 6 in normal/reverse directions. The rotary shaft 7 is separably connected the driving shaft. The mounting member 5 is arranged at the storing position and working position and independently from a rear part gate door, regardless of an opening/closing state of the rear part gate door. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an entry prevention device for preventing an entry of a traveling vehicle into a sign display vehicle equipped with a sign for indicating that construction is underway on the road.

  Conventionally, a sign display vehicle equipped with a sign that indicates that construction is underway on the road has been provided. By displaying this sign after stopping the vehicle on the road of the construction site, The lane change is encouraged.

  The vehicle is provided with a rush preventing device at the rear end of the loading platform in order to prevent the traveling vehicle from rushing from behind.

Specifically, as the rush prevention device, a mounting member having a cylindrical cushion drum as a buffer is rotatably supported, and a hydraulic cylinder is connected to the mounting member via a link mechanism. By rotating the mounting member up and down via the link mechanism by the expansion and contraction operation of the knives, the cushion drum attached to the mounting member is placed on the loading platform at the work position where it faces the road behind the loading platform. It was arranged at the storage position (see, for example, Patent Document 1).
JP 2003-293329 A

  However, in the conventional inrush prevention device, since the mounting member is rotated by the expansion / contraction cylinder via the link mechanism, there is a problem that the mechanism is complicated and the number of parts increases and the manufacturing cost increases. .

  Further, when the hydraulic cylinder is not operated due to a failure of the hydraulic system, there is a problem that the cushion drum cannot be disposed from the working position to the retracted position.

  Further, the cushion drum and the mounting member are pivotally disposed at the storage position and the working position in conjunction with a rear side door provided at the rear end of the loading platform so as to be freely opened and closed. For this reason, when the cushion drum or the like is disposed at the work position, the rear saddle is also disposed in an open state in which the rear saddle hangs downward at the rear of the loading platform. It becomes invisible.

  Therefore, when it is necessary to change the parking position at the work site, if the cushion drum or the like is moved in a state where it is placed at the work position, the taillight cannot be seen from the rear traveling vehicle, so the movement is stopped. There is a problem that it is difficult to determine whether the cushion drum or the like is temporarily moved, and it is troublesome to temporarily place the cushion drum or the like at the storage position.

  The present invention has been made in view of the above-described problems. The object of the present invention is to simplify the mechanism for rotating the cushion drum, to reduce the production cost, and to manually rotate the cushion drum. To provide an intrusion prevention device for a sign display vehicle that can move quickly and can respond quickly to breakdowns, and can check a tail lamp from the rear even when a cushion drum or the like is placed at a work position. It is in.

  In order to achieve the above object, a rush prevention device for a sign display vehicle of the invention according to claim 1 is provided at a rear end of a loading platform in a sign display vehicle equipped with a sign display device for indicating that construction is underway on a road. The mounting member is supported so as to be pivotable up and down about a rotation shaft, and a drum is mounted on the mounting member, and the drive shaft of the drive motor is coaxially connected to the rotation shaft. By rotating the drive shaft in the forward and reverse directions, the drum is arranged at the working position where the drum stands up on the road behind the loading platform and the retracted position on the loading platform via the mounting member. Is.

  According to a second aspect of the present invention, there is provided the intrusion prevention device in which the pivot shaft and the drive shaft are detachably connected.

  According to a third aspect of the present invention, there is provided the intrusion prevention device according to the third aspect of the present invention, wherein the attachment member to which the drum is attached is stored in the storage position and the work position independently of the rear side door regardless of the open / closed state of the rear side door. It was made to be arranged in.

  According to the present invention, since it is a simple coupling mechanism in which the drive shaft of the drive motor is coaxially coupled to the rotation shaft, the mechanism can be simplified, the number of parts can be reduced, and the production cost can be reduced. .

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

  1 to 3 show a rush preventing device in a sign display vehicle of the present invention.

  The sign display vehicle is for indicating that construction is underway on the road, and the sign display device 2 is mounted on the loading platform 1 placed on the vehicle frame A behind the driver seat A1.

  In the sign display device 2, the sign display plate 21 is provided so as to be movable up and down by an elevating mechanism 22 having an actuator such as a telescopic cylinder. On the sign display board 21, a sign indicating that the road is under construction and instructing the lane change or the like is displayed, so that the driver is alerted.

  The sign display vehicle is provided with a rush prevention device 3 that prevents the traveling vehicle from rushing from behind.

  The rush prevention device 3 includes a mounting member 5 for mounting the cushion drum 4, and a drive motor 6 (see FIGS. 1 and 2) that rotates the mounting member 5 together with the cushion drum 4 to a working position and a storage position described later. It has.

  As shown in FIGS. 4 and 5, the attachment member 5 includes a plurality of (four in the illustrated example) operation arms 51 and an attachment arm 53 connected to the tip of the operation arm 51 via a connection member 52. I have.

  Each actuating arm 51 has a base end portion integrally connected to the rotating shaft 7, and a connecting member 52 is provided over the respective tip ends.

  In the illustrated example, two mounting arms 53 are provided as a set, and a total of four mounting arms 53 are provided, and each base end portion is integrally connected to the connecting member 52 so as to be L-shaped with the operating arm 51. ing. Each of the mounting arms 53 has a distal end portion 53b slidably inserted into a base end side main body portion 53a connected to the connecting member 52. That is, the distal end portion 53b is provided so as to be able to expand and contract with respect to the main body portion 53a, and the length can be adjusted by inserting and locking a locking pin (not shown) in the locking holes 54 provided in both of them. Yes.

  By making the length of the mounting arm 53 adjustable in this way, the cushion drum 4 mounted on the mounting table 55, which will be described later, can be disposed at an appropriate work position according to the vehicle height of the vehicle, thereby The cushion drum 4 can be arranged at an appropriate position while adjusting the length of the mounting arm 53 even for vehicles having different vehicle heights.

  The middle part and the front end of these mounting arms 53 are integrally connected by a connecting member 56, and the mounting table 55 on which the cushion drum 4 is placed between the front end parts 53b of the two mounting arms 53 is connected. It is installed.

  The rotating shaft 7 is pivotally supported in the state of being arranged in the width direction on the upper portion of the support frame 11 erected at the rear end portion of the loading platform 1, and is shown when the cushion drum 4 is arranged at the working position. As shown in FIG. 4, the mounting member 5 is arranged so as to straddle the rear saddle door 1a. That is, the attachment member 5 including the cushion drum 4 is provided in a state independent and independent from the rear side door 1a regardless of the open / closed state of the rear side door 1a.

  As shown in FIG. 3, the mounting member 5 does not interfere with the tail lamp 12 having the mounting arms 53 and the like provided on both sides of the rear end of the vehicle and the license plate 13 provided at the center of the rear end of the vehicle. They are arranged at a predetermined interval. As shown in FIG. 3, the tail lamp 12 is arranged so as to be vertically long so as not to be blocked by the mounting arms 53 and the cushion drum 4 when viewed from the rear.

  The cushion drum 4 is for reducing the impact when the traveling vehicle enters, and the inside is filled with, for example, a resin granular member. The cushion drum 4 is stably held by fastening the upper and lower portions with the belt-like fastening band 41 in a state of being placed on the mounting table 55. Specifically, the cushion drum 4 is held on the mounting table 55 by fastening both ends of the fastening band 41 around the cushion drum 4 to the mounting arm 53 side.

  The drive motor 6 is disposed on one end side of the rotation shaft 7, and the drive shaft 61 is connected to the rotation shaft 7 coaxially via a coupling 8. As the drive motor 6, for example, a hydraulic hydraulic motor or the like is used in addition to the electric motor.

  As shown in FIG. 6, the coupling 8 includes a driving side coupling 82 integrally connected to the driving shaft 61 side via a key 81 in the rotational direction, and one end of the rotating shaft 7 by welding or the like. A rotation-side coupling 83 that is fixed is provided, and these couplings 82 and 83 are integrally fixed by a bolt 85 via a spacer 84.

  Therefore, the drive drum 61 is rotated in the forward and reverse directions by the drive motor 6 and the attachment member 5 is turned up and down around the rotation shaft 7 so that the cushion drum 4 attached to the attachment member 5 is loaded. 1 is arranged at a work position that stands up on the road behind 1 and a storage position that retreats on the loading platform 1. Further, the cushion drum 4 is arranged in a state where it is laid down horizontally on a holding table 15 placed on the loading platform 1 in the storage position.

  The storage state of the cushion drum 4 is not limited to the above-described one, and the cushion drum 4 may be stored in a state of being erected substantially vertically on the loading platform 1. Since the cushion drum 4 is stored in a substantially upright state with respect to the loading platform 1 in this manner, the space on the loading platform 1 is increased. It becomes possible to do.

  In this way, since the drive shaft 61 of the drive motor 6 is coaxially connected to the rotary shaft 7 via the coupling 8, the mechanism can be simplified, the number of parts can be reduced, and the production cost can be reduced. Reduction can be achieved.

  A generator 10 is mounted on the loading platform 1, and a power source for the drive motor (electric motor) 6 and the sign display device 2 is secured by the generator 10.

  Further, a crane device 9 is provided on the vehicle frame A between the driver seat A1 and the loading platform 1. In this crane apparatus 9, a multi-stage telescopic boom 92 is provided on a swing post 91 so that it can be raised and lowered, and a hook 94 is suspended from a wire 93 connected to an unillustrated unillustrated through the tip of the telescopic boom 92. The crane device 9 is used to replace the sign display device 2 or to suspend and transfer other devices.

  The turning of the swing post 91, the expansion and contraction of the telescopic boom 92, the operation of the unichi and the like in the crane device 9 are performed through a hydraulic system (not shown) by operating a hydraulic pump via a PTO (not shown) using a vehicle drive engine as a power source. This is done by driving each actuator such as a motor and a telescopic cylinder.

  As described above, in the intrusion prevention device for the sign display vehicle of the present invention, the attachment member 5 to which the cushion drum 4 is attached is separated from the rear lid 1a and does not interfere with the tail lamp 12 that is disposed vertically. The tail lamp 12 can be confirmed from the rear traveling vehicle even when the cushion drum 4 is disposed at the working position. Thereby, even if it is necessary to change the parking position of the vehicle at the site, it is safe. Further, it is not necessary to temporarily place the cushion drum 4 at the storage position in order to move the vehicle a little, and the workability is good while ensuring the above-described safety.

  In addition, since the drive shaft 61 and the rotation shaft 7 are connected in a state where they can be separated by the coupling 8, even if the drive motor 6 stops operating due to a failure, the coupling 8 is disassembled and the drive shaft 61 is disassembled. By separating the rotating shaft 7, the cushion drum 4 can be manually placed from the working position to the retracted position, and such troubles can be dealt with quickly.

It is a side view which shows the structure of the rush prevention apparatus in a sign display vehicle. It is a top view which shows the structure of the rush prevention apparatus in a sign display vehicle. It is a rear view which shows the structure of the rush prevention apparatus in a sign display vehicle. It is a side view which shows the structure of a rush prevention apparatus. It is a top view which shows the structure of a rush prevention apparatus. It is a top view which shows the connection structure of a drive motor and a rotating shaft.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cargo bed 1a Rear coffin door 2 Sign display device 3 Inrush prevention device 4 Cushion drum (drum)
5 Mounting member 6 Drive motor 7 Rotating shaft 8 Coupling

Claims (3)

In a sign display vehicle equipped with a sign display device that indicates that construction is underway on the road,
A mounting member is supported at the rear end of the loading platform so as to be pivotable up and down about a rotation shaft, and a drum is attached to the mounting member, and the drive shaft of the drive motor is coaxially connected to the rotation shaft. By connecting the drive shaft of the drive motor in the forward / reverse direction, the drum is placed at the working position where the drum stands up on the road behind the loading platform via the mounting member, and the retracted position is retracted on the loading platform. A rush prevention device for a sign display vehicle, characterized in that   2. The intrusion prevention device for a sign display vehicle according to claim 1, wherein the rotation shaft and the drive shaft are detachably connected to each other.   The mounting member to which the drum is mounted is arranged in a retracted position and a working position independently of the rear side door regardless of the open / closed state of the rear side door. A rush prevention device for a sign display vehicle according to 1 or 2.

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