JP2020003118A - Ladder truck - Google Patents

Abstract

To provide a ladder truck which promotes improvement of security to a gun shoot by comprising a bulletproof member to protect a person that tries to ascend and descend a ladder from the gun shoot.SOLUTION: The ladder truck comprises: a main ladder 3 which is pivotally attached to a vehicle body 1 in a freely raised manner; a secondary ladder 10 which is attached along the main ladder 3 in a freely slidable manner and can protrude in a tip side; a tip ladder 40 which is pivotably attached to a tip portion of the secondary ladder 10; and a plate-like bulletproof member 50 which is attached to the main ladder 3 in a freely raised manner. Operation force is reduced by providing a gas dumper 60 with a stopper which pushes the plate-like bulletproof member 50 in a standing direction.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a ladder truck equipped with a ladder in a vehicle, and particularly to a ladder truck having a repellent shelter suitable for sending personnel to an aircraft or a low-rise building or for evacuation.

  2. Description of the Related Art Conventionally, a ladder vehicle having a telescopic ladder has been used for fire fighting activities and the like. As this kind of ladder vehicle, there is Patent Document 1 below.

JP 2017-209234 A

  By the way, a conventional ladder car can extend a plurality of ladders, but no measures have been taken when an adversary who may be shot is located in an aircraft, a low-rise building, or the like at the tip of the ladder. For this reason, rescuers, supporters, and the like trying to climb the ladder are at risk.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a repelling member for protecting a person trying to move up and down a ladder from shooting, thereby improving safety against shooting. A ladder vehicle is provided.

One embodiment of the present invention is a ladder vehicle. This ladder car has a main ladder pivotally mounted on the vehicle body,
A sub ladder that is slidably mounted along the main ladder and can protrude to the tip side of the main ladder,
A tip ladder pivotally attached to the tip of the sub-ladder,
And a repelling member attached to the main ladder so as to be able to move up and down.

  A gas damper for urging the repelling member in the upright direction may be provided between the repelling member and a frame of the main ladder.

  Preferably, the gas damper is a gas damper with a stopper, and the repelling member can be locked in an upright state.

  It is preferable that a tilt cylinder for rotating the main ladder and a slide drive cylinder for sliding the sub ladder are provided, and a remote controller for remotely operating the tilt cylinder and the slide drive cylinder is provided.

Another embodiment of the present invention also relates to a ladder wheel. This ladder car has a main ladder pivotally mounted on the vehicle body,
A sub ladder that is slidably mounted along the main ladder and can protrude to the tip side of the main ladder,
A tip ladder pivotally attached to the tip of the sub-ladder,
A tilt cylinder for rotating the main ladder,
A slide drive cylinder for sliding the sub-ladder,
A remote controller that remotely controls the tilt cylinder and the slide drive cylinder.

  In addition, any combination of the above-described components, and any conversion of the expression of the present invention between a method, a system, and the like are also effective as embodiments of the present invention.

  ADVANTAGE OF THE INVENTION According to the ladder vehicle which concerns on this invention, the improvement of the safety | security with respect to a shooting is aimed at by providing the bounce member which protects the person who tries to go up and down a ladder from a gun so that it can be raised and lowered with respect to a ladder. it can. When a remote controller is provided, operability can be improved.

1 is a side view showing an embodiment of a ladder vehicle according to the present invention, in which a state during running of the ladder vehicle is indicated by a solid line, and a state during use of the ladder vehicle is indicated by a virtual line. FIG. 4 is a plan view showing a state when the ladder vehicle is running in a solid line and a state when using the ladder vehicle in a virtual line in the embodiment. FIG. 3 is a side view showing the main ladder and a repelling member provided on the main ladder so as to be able to undulate in the embodiment. FIG. FIG. 4 is an enlarged side view showing a repelling member and a peripheral mechanism in the embodiment. FIG. 2 is a plan view of the corded remote controller according to the embodiment. FIG. 2 is a plan view of the wireless remote controller according to the embodiment. FIG. 4 is a hydraulic circuit diagram for operating a tilt cylinder that rotates a main ladder and a slide drive cylinder that slides a sub ladder in the embodiment. FIG. 4 is an electric circuit diagram using a remote controller for operating a tilt cylinder and a slide drive cylinder in the embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Note that the same or equivalent components, members, processes, and the like shown in the drawings are denoted by the same reference numerals, and the repeated description will be omitted as appropriate. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations described in the embodiments are not necessarily essential to the invention.

  As shown in FIGS. 1 to 5, the vehicle 1 has a rectangular parallelepiped frame-shaped body frame 2, and the ends of a pair (plurality) of main ladders 3 can be raised and lowered on the upper side 2 a of the body frame 2 by pins 4. It is pivotally mounted (rotatably mounted). The height of the upper side 2a of the body frame 2 is higher than the cabin 5 where the driver's seat is located. A tilt cylinder 6 is provided between the main ladder 3 and the lower part of the body frame 2. That is, the main body 6 a of the tilt cylinder 6 is pivotally attached to the lower part of the vehicle body frame 2 with the pin 7, and the tip end of the piston rod 6 b of the tilt cylinder 6 is pivotally attached to the main ladder 3 with the pin 8. The tilt cylinder 6 drives the main ladder 3 in a state in which the main ladder 3 rises at a predetermined angle from a state parallel to the upper side 2a. When the tilt cylinder 6 is contracted, the main ladder 3 and the upper side 2a are connected. When the main ladder 3 is extended, the main ladder 3 rotates with the pin 4 as a fulcrum, and rises at a predetermined angle α with respect to the upper side 2a as shown by the phantom line P in FIG.

  Stairs 9 are fixed to the vehicle body frame 2 to move up and down between a lower portion of the vehicle body frame 2 and the upper side 2a. A foldable stair 91 is rotatably connected to the lower end of the stairs 9 to move up and down between the ground and the lower end of the stairs 9. When the stairs 91 are not used, the stairs 91 are superimposed on the stairs 9 as shown by the solid line in FIG. 1, and when they are used, they are developed like imaginary lines, and the stairs 9 and the stairs 91 reach from the upper side 2a of the body frame 2 to the ground. Functions as a continuous staircase.

  Each main ladder 3 is provided with a sub ladder 10 in a slidable and parallel manner. A slide drive cylinder 11 is provided between the main ladder 3 and the sub ladder 10. That is, the main body 11 a of the slide drive cylinder 11 is pivotally connected to the main ladder 3 by the pin 12, and the tip of the piston rod 11 b of the slide drive cylinder 11 is pivotally connected to the sub ladder 10 by the pin 13. The sub ladder 10 is supported by rollers (not shown) provided on the main ladder 3 so as to slide smoothly inside the main ladder 3. When the slide drive cylinder 11 is contracted, the sub ladder 10 is attached to the main ladder 3. When the slide drive cylinder 11 is extended, it protrudes (extends) toward the distal end side of the main ladder 3 as shown by the phantom line Q in FIG.

  The tip ladder 40 is connected to each of the sub ladders 10 via the hinges 41, and is manually folded from the state of being folded on the sub ladder 10 to the state of being horizontally deployed to the tip side of the sub ladder 10 (virtual line R). Can rotate.

  As shown in FIGS. 3 to 5, a distal end of a plate-like repelling member 50 is pivotally attached to the distal end side of the main ladder 3 so as to be able to move up and down (rotatably). That is, the end of the repelling member 50 is attached to the inside of the end side corner pipe 3b of the frame 3a of the main ladder 3 via the hinge 51. Further, a gas damper 60 with a stopper is provided between the middle portion in the length direction of the repelling member 50 and the lower part of the side surface of the frame 3a to urge the repelling member 50 in the rising direction. That is, the lower end of the gas damper 60 is pivotally connected to the frame 3 a by the pin 65, and the other end is pivotally connected to the side surface of the repelling member 50 by the pin 66. The gas damper 60 with a stopper is a commercially available product in which the repelling member 50 can be locked with one touch in an arbitrary standing state (and can be unlocked with one touch). The repelling member 50 is provided with a grip 52 for standing up manually.

  The plate-shaped repelling member 50 is parallel to the main ladder 3 in the prone state and is accommodated inside the frame 3a. At this time, since the component force of the gas damper 60 acting in the direction in which the repelling member 50 is erected is small, the repelling member 50 is stable in a prone state. When the user holds the grip 52 and raises the repelling member 50 manually, the component force of the gas damper 60 acting in the direction in which the repelling member 50 is raised gradually increases, and finally, the phantom line in FIG. As shown by S, the gas damper 60 stands by itself at the fully extended standing position. By utilizing the stopper function of the gas damper 60, the repelling member 50 can be locked at an arbitrary standing angle.

  The plate repelling member 50 has, for example, a bonding structure of a metal plate and another plate having anti-elasticity.

  In the configuration of the above-described embodiment, the tilt cylinder 6 is contracted when the ladder vehicle is running, and each main ladder 3 is placed in a prone state parallel to the upper side 2a of the body frame 2. In addition, the sub ladder 10 is retracted into the main ladder 3 by contracting the slide drive cylinder 11. The tip ladder 40 is placed on the sub ladder 10 in an upside down state.

  When using the ladder car, first, the tip ladder 40 is deployed on the tip side of the sub ladder 10. Next, the tilt cylinder 6 is extended so that each main ladder 3 is raised from the upper side 2a of the body frame 2 at a predetermined elevation angle. The elevation angle α is adjusted according to the target height at which a person is sent to an aircraft or a low-rise building, or to be evacuated. Then, the slide drive cylinder 11 is extended, and the sub ladder 10 is protruded and extended from the front end side of the main ladder 3. The tip position of the tip ladder 40 can be arbitrarily adjusted by adjusting the length of the tilt cylinder 6 and the slide drive cylinder 11.

  Thus, it is possible to send personnel to an aircraft or a building on the route of the stairs 9, the main ladder 3, the sub ladder 10, and the tip ladder 40, or to evacuate the personnel on the reverse route.

  When there is a risk of shooting, the plate-shaped repelling member 50 can be manually erected, and the personnel can be evacuated behind the repelling member 50.

  The above is a description of the mechanical operation of the ladder car. Hereinafter, the operation of the tilt cylinder 6 that rotates the main ladder 3 and the slide drive cylinder 11 that slides the sub ladder 10 when using a remote controller will be described. Here, it is assumed that the tilt cylinder 6 and the slide drive cylinder 11 are hydraulic cylinders.

  FIG. 6 is a plan view of the corded remote controller 20 according to the embodiment, FIG. 7 is a plan view of the wireless remote controller 30, and FIG. 8 is a slide for sliding the tilt cylinder 6 for rotating the main ladder 3 and the sub ladder 10. FIG. 9 is a hydraulic circuit diagram for operating the drive cylinder 11, and FIG. 9 is an electric circuit diagram using a remote controller for operating the tilt cylinder 6 and the slide drive cylinder 11.

  The remote controller 20 with a cord shown in FIG. 6 has leftward “up”, “down”, “extend”, and “shrink” push buttons for operating the main ladder 3 and the sub ladder 10 on the left side of the vehicle 1. It has push buttons “up”, “down”, “extend” and “shrink” on the right side for operating the main ladder 3 and the sub ladder 10 on the right side. The remote controller with cord 20 is connected via a connection cord 21 to the electric circuit of FIG. 9 for controlling the solenoid valve in the hydraulic circuit of FIG.

  The wireless remote controller 30 shown in FIG. 7 has leftward “up”, “down”, “extend”, and “shrink” push buttons for operating the main ladder 3 and the sub ladder 10 on the left side of the vehicle 1. It has push buttons “up”, “down”, “extend” and “shrink” on the right side for operating the main ladder 3 and the sub ladder 10 on the right side. The wireless remote controller 30 is wirelessly (radio wave) coupled to the receiver 70 in the electrical circuit of FIG. 9, and pressing a particular push button on the wireless remote controller 30 closes the corresponding contact of the receiver 70. It has become. For example, when the left “up” push button is pressed, the (left) upper output switch of the receiver 70 is closed, and when the left “down” push button is pressed, the (left) lower output of the receiver 70 is pressed. When the switch is closed and the left “ext” push button is pressed, the (left) expansion output switch of the receiver 70 is closed, and when the left “shrink” push button is pressed, the (left) receiver 70 is pressed. The compression output switch closes. Similarly, when the right "up" push button is pressed, the (right) upper output switch of the receiver 70 is closed, and when the right "down" push button is pressed, the (right) lower switch of the receiver 70 is pressed. When the output switch is closed and the right push button is pressed, the (right) extension output switch of the receiver 70 is closed, and when the right push button is pressed, the (right) push button of the receiver 70 is pressed. ) The compression output switch closes.

  The hydraulic circuit of FIG. 8 includes a hydraulic circuit unit 80L that operates a tilt cylinder 6 that rotates the left main ladder 3 and a slide drive cylinder 11 that slides the left sub ladder 10, and a tilt cylinder that rotates the right main ladder 3. 6 and a hydraulic circuit section 80R that operates a slide drive cylinder 11 that slides the right sub-ladder 10. The hydraulic circuit unit 80L and the hydraulic circuit unit 80R have the same configuration, and receive hydraulic oil from a hydraulic oil supply port P of a power unit (engine drive).

  An electromagnetic switching valve 81 is provided for switching the vertical drive of the tilt cylinder 6 for rotating the left main ladder 3, and an electromagnetic switching valve 82 is provided for switching the expansion and contraction of the slide drive cylinder 11 for sliding the left sub ladder 10. Is provided. Similarly, an electromagnetic switching valve 83 for switching the vertical drive of the tilt cylinder 6 for rotating the right main ladder 3 and an electromagnetic switching valve for switching the expansion and contraction of the slide drive cylinder 11 for sliding the right sub ladder 10. 84 are provided respectively. The electromagnetic switching valves 81 to 84 are stopped in the non-excitation state, and maintain the state immediately before.

  FIG. 9 shows that the voltage of the battery BT of the ladder vehicle is switched between up and down and expansion and contraction of the left and right tilt cylinders 6 and the left and right slide drive cylinders 11 in response to the push button operation of the corded remote controller 20 or the wireless remote controller 30. Is selectively applied to the solenoids 81a or 81b, 82a or 82b, 83a or 83b, 84a or 84b of the solenoid-operated switching valves 81, 82, 83 and 84 to excite the solenoids.

  For example, if the "up" push button on the left side of the corded remote controller 20 of FIG. 6 is pressed, the solenoid 81a of the electromagnetic switching valve 81 is excited by the electric circuit of FIG. 9, and the tilt cylinder 6 of the hydraulic circuit 80L is extended. The operating oil is supplied to perform the operation. As a result, the left main ladder 3 rotates in the upright direction.

When the "lower" push button on the left side of the corded remote controller 20 is pressed, the solenoid 81b of the electromagnetic switching valve 81 is excited, and hydraulic oil is supplied so that the tilt cylinder 6 of the hydraulic circuit 80L contracts. As a result, the left main ladder 3 rotates in a direction to lie down horizontally.
When the "extend" push button on the left side of the corded remote controller 20 is pressed, the solenoid 82a of the electromagnetic switching valve 82 is excited, and hydraulic oil is supplied so that the slide drive cylinder 11 of the hydraulic circuit 80L is extended. As a result, the sub ladder 10 is slid in the projecting direction.

  When the "shrink" push button on the left side of the corded remote controller 20 is pressed, the solenoid 82b of the electromagnetic switching valve 82 is excited, and hydraulic oil is supplied so that the slide drive cylinder 11 of the hydraulic circuit 80L contracts. . As a result, the sub ladder 10 is slid in the retracting direction.

  Similarly, when the "up", "down", "extend", and "contraction" push buttons on the right side are pressed, the solenoids 83a or 83b, 84a or 84b of the electromagnetic switching valves 83 and 84 are selectively energized. Then, the right main ladder 3 and the sub ladder 10 can be operated via the tilt cylinder 6 and the slide drive cylinder 11.

  When the push button of the wireless remote controller 30 shown in FIG. 7 is operated, the corresponding contact of the receiver 70 (having the same contact configuration as that of the corded remote controller 20) in the circuit diagram of FIG. The same effect as when the controller 20 is operated can be obtained.

  For example, if the "up" push button on the left side of the wireless remote controller 30 in FIG. 7 is pressed, the (left) upper output switch of the receiver 70 of the receiver 70 in the electric circuit in FIG. Hydraulic oil is supplied such that the 81 solenoid 81a is excited and the tilt cylinder 6 of the hydraulic circuit 80L is extended. As a result, the left main ladder 3 rotates in the upright direction. Other push-button operations on the wireless remote controller 30 are the same as those on the corded remote controller 20.

  According to the present embodiment, the following effects can be obtained.

(1) A main ladder 3 pivotally attached to the vehicle body frame 2 so as to be able to move up and down, a sub ladder 10 slidably mounted along the main ladder 3 and capable of protruding toward the distal end side of the main ladder 3, In the configuration including the tip ladder 40 pivotally attached to the tip of the ladder 10, the plate-like repelling member 50 is provided on the main ladder 3 so as to be able to move up and down, so that the ladders 3, 10 and 40 can be raised and lowered. This protects the attacker from shooting and improves safety against shooting.

(2) Since the gas damper 60 with a stopper for urging the plate-shaped repelling member 50 in the rising direction is provided between the repelling member 50 and the frame 3a of the main ladder 3, the repelling member 50 is provided. It is possible to reduce the operation force when the user is manually raised. Further, by using the gas damper 60 with the stopper, the gas damper 60 with the stopper can be locked at an arbitrary standing angle of the repelling member 50 (unlocking can be released at any position), and the operability is good.

(3) By using the corded remote controller 20 or the wireless remote controller 30, the main ladder 3 and the sub ladder 10 can be remotely controlled, and workability and operability can be improved.

  As described above, the present invention has been described by taking the embodiment as an example. However, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope described in the claims. By the way. Hereinafter, modified examples will be described.

  In the above embodiment, each tilt cylinder 6 and slide drive cylinder 11 may be a hydraulic cylinder or an electric cylinder.

  Instead of manually rotating the tip ladder 40, it may be performed by a hydraulic cylinder or an electric cylinder.

  The attachment position of the repelling member 50 to the main ladder 3 is not limited to the end portion (base portion) of the main ladder 3, but may be at the tip side, an intermediate position, or the like, and may be installed at a plurality of locations.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Body frame 3 Main ladder 5 Cabin 6 Tilt cylinder 10 Secondary ladder 11 Slide drive cylinder 20 Corded remote controller 30 Wireless remote controller 40 Tip ladder 50 Repelling member 60 Gas damper with stopper

Claims (5)

A main ladder pivotally attached to the vehicle body,
A sub ladder that is slidably mounted along the main ladder and can protrude to the tip side of the main ladder,
A tip ladder pivotally attached to the tip of the sub-ladder,
And a repellent member attached to the main ladder so as to be able to move up and down.   The ladder vehicle according to claim 1, wherein a gas damper for urging the repelling member in the upright direction is provided between the repelling member and a frame of the main ladder.   The ladder vehicle according to claim 1 or 2, wherein the gas damper is a gas damper with a stopper, and is capable of locking the repelling member in an upright state.   4. The electronic device according to claim 1, further comprising a tilt cylinder that rotates the main ladder and a slide drive cylinder that slides the sub ladder, and a remote controller that remotely controls the tilt cylinder and the slide drive cylinder. 5. The ladder truck described in the paragraph. A main ladder pivotally attached to the vehicle body,
A sub ladder that is slidably mounted along the main ladder and can protrude to the tip side of the main ladder,
A tip ladder pivotally attached to the tip of the sub-ladder,
A tilt cylinder for rotating the main ladder,
A slide drive cylinder for sliding the sub-ladder,
A ladder car comprising: a remote controller that remotely controls the tilt cylinder and the slide drive cylinder.