JPH0468954B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Industrial Field of Application The present invention relates to a safety device for a fire engine hose car cargo handling device for loading and unloading a plurality of hose cars onto and from a fire engine. be.

The hose car is equipped with a fire extinguishing hose, and is taken down from the fire engine and moved to a predetermined position during fire extinguishing work. Then, the hose taken out from the hose car at a predetermined position is used by being connected to a water supply port of a fire engine, other hoses, etc.

(2) Conventional technology Fire engines equipped with a plurality of hose cars as described above have been known in the past. The plurality of hose cars are arranged one behind the other on the body of the fire engine. These horse cars are loaded and unloaded using a ramp board or the like that extends between the rear end of the vehicle body and the ground.

(3) Problems to be solved by the invention However, when unloading a plurality of hose cars from a fire engine, the hose car placed on the rear side of the car body is located at the rear end of the car body, so the worker cannot unload the fire engine. It is possible to lower the vehicle by working from the ground without climbing onto the vehicle body. However, in order to bring the hose car placed on the front side of the car body to the position of the lamp plate, a worker must climb onto the car body and unlock the hose car that is locked on the car body. There was a problem that I had to pull it out. Furthermore, when loading the hose car onto a fire engine, there was a similar problem in that workers had to climb onto the car body.

The present invention has been made in view of the above-mentioned problems, and enables workers to quickly and safely carry out loading and unloading of horse cars placed on the vehicle body, without having to go to the trouble of climbing onto the vehicle body. The purpose is to

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above-mentioned object, the hosecar cargo handling device for a fire engine of the present invention is configured to move between a raised position and a lowered position at the rear end of the vehicle body. a loading platform elevating device having a loading platform at the rear end of the vehicle body; a plurality of hose car support frames arranged in front and back so as to be movable toward and away from the loading platform at the rear end of the vehicle body; and a hose car provided in each of these hose car support frames. A locking device, a support frame connecting device for removably connecting adjacent ones of the plurality of hosecar support frames, and a support frame connecting device for moving the hosecar support frame arranged at the forefront of the plurality of hosecar support frames back and forth. It has a support frame drive device and a loading platform position detector that detects whether or not the loading platform is in the raised position, and the supporting frame is moved only when it is detected that the loading platform is in the raised position. The present invention is characterized by comprising a drive control device configured to supply power to the drive device.

(2) Effect In the safety device of the hose car cargo handling device for a fire engine of the present invention having the above-described configuration, normally, a plurality of hose car support frames are arranged in front and back on the vehicle body, and these hose car support frames They are connected by a support frame connection device. A hose car is fixed to each hose car support frame by a hose car locking device.

In order to lower a plurality of hose cars from the vehicle body, first, the cargo platform of the cargo platform lifting device is placed in the raised position. In the present invention, power is supplied to the support frame drive device only when the loading platform is in the raised position, so the support frame drive device can be operated only at this time. Therefore, the support frame driving device is operated to move the plurality of connected hose car support frames rearward, and the hose car support frame disposed at the rearmost end is moved onto the loading platform of the loading platform lifting device. Thereafter, the support frame connecting device that connects the hose car support frame that has been moved onto the cargo receiving platform and another hose car support frame that is placed immediately in front of it is separated. Thereafter, when the loading platform is lowered, the hose car support frame and the hose car locked thereto are lowered together with the loading platform. After the loading platform has been lowered to the ground, that is, after reaching the lowered position, the hose car locking device provided on the hose car support frame on the loading platform is unlocked. Then, the hose car fixed on the hose car support frame becomes free and can be moved to a predetermined position on the ground. When the hose car is moved in this manner, an empty hose car support frame is left on the receiving platform.

In this manner, after the first hose car is lowered, the empty hose car support frame remaining on the receiving platform is removed from the receiving platform. Thereafter, the loading platform is moved to the first raised position. Then, the same operation as described above for lowering the first hose car is repeated, and the second and third hose cars are lowered one after another from the fire engine. The process of lowering the last remaining horse car is as follows.

After lowering the second to last hose car, the loading platform is moved to the first raised position while leaving the empty hose car support frame on the loading platform. At this time, one remaining hose car support frame remains on the vehicle body, and the remaining 12 hose cars are fixed on this hose car support frame by a horse car lock device. The remaining hose car support frame is placed at the rear end of the fire engine. Therefore, the hose car locking device of the remaining hose car support frame is released and the remaining horse car is pulled out onto the empty hose car support frame on the cargo receiving platform. Then, the hose car is locked on the hose car support frame on the loading platform using the hose car locking device. after that,
Lower the loading platform and do the same as above to remove the remaining 1
Lower the horse car and move it to an appropriate position on the ground.

To load the hose car onto the fire engine, simply follow the unloading procedure described above in the reverse order.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, a cargo platform elevating device C is disposed at the rear end portion (right end portion in FIG. 1) of a vehicle body B of a fire engine S. A support frame guide member G is disposed on the upper surface of the rear end of the vehicle body B in the front-rear direction. This support frame guide member G includes a horse car support frame _F1 and
This is a member to support _F2 so that it can slide forward and backward. The front end (first
The hose car support frame is located near the left end (in the figure).
A support frame drive device P for moving F ₂ back and forth is provided. The hose car cargo handling device for a fire engine is composed of the members indicated by the above-mentioned symbols C, G, F ₁ , F ₂ and P. This hose car cargo handling device for fire engines is used to mount two hose cars H, such as those illustrated in FIGS. 13 and 14, side by side in the front-rear direction on a vehicle body B, or to unload them from the vehicle body B. . The handle h of the horse car H is configured to be foldable at its base so that it can be stored in a narrow space on the vehicle body B. A wound water hose (not shown) is housed inside the hose car H.

In FIGS. 1 to 3, the support frame guide member G is composed of side guide rails 1, 1 and lower guide rails 2, 2, which are arranged along the left and right outer sides of the vehicle body B. . The side guide rails 1, 1 are formed with inwardly directed guide surfaces 1a, 1a having a U-shaped cross section. Further, on the upper surface of one side guide rail 1, a limit switch Ls ₁ for detecting an advanced position and a limit switch Ls ₂ for detecting a backward position are arranged at intervals in the front and rear. The limit switch Ls ₁ for detecting the advanced position is turned ON only when the horse car support frame F ₂ is in the advanced position, and the limit switch Ls ₂ for detecting the backward position is turned ON only when the horse car support frame F ₂ is in the backward position. It is located in

As is clear from FIG. 3, the first horse car support frame _F1 is composed of horse car support members 3, 3 arranged on the left and right sides, and an intermediate connecting member 4 that connects them. The horse car support frame members 3, 3 include horizontal support parts 3a, 3a on which a horse car H, which will be described later, is placed, and side wall parts 3b, 3b. Horizontal axle guide surfaces 3c, 3c having an inward U-shaped cross section are formed in the side wall portions 3b, 3b, and positioning openings 3d, 3d (FIG. 8) are formed in the horizontal support portions 3a, 3a. is formed. The axle guide surfaces 3c, 3c are for guiding the axle a of the horse car H, and horse car lock devices _L1 , _L1 for fixing the axle of the horse car H to the axle position are provided approximately at the center thereof. The hose car lock device _L1 includes a U-shaped lock member 5 (see FIGS. 3 to 6) disposed within the axle guide surface 3c, and a lock lever 6 that rotates the lock member 5 from the outside of the axle guide surface 3c. The lock lever 6 is comprised of a return spring 7 that always holds the lock lever 6 in a predetermined position. When the U-shaped locking member 5 is in a vertical position as shown by the chain line in FIGS. 5 and 6, the axle a of the horse car H can freely pass through the axle guide surface 3c, but the fourth When the U-shaped locking member 5 narrows the axle a of the horse car H and is in a horizontal position as shown by the dotted line in Figure 6, the horse car H is moved to the hose car support frame.
It can be fixed on _F1 . Sliders 8, 8 are fixed to the outer surfaces of the side wall portions 3b, 3b, respectively, and upward engaging protrusions 9, 9 are provided at the front ends of the side wall portions 3b, 3b, respectively. And the hose car support members 3, 3
The lower surfaces of the horizontal support parts 3a, 3a are supported by the lower guide rails 2, 2, and the sliders 8, 8 on the outer surfaces of the side wall portions 3b, 3b are supported by the guide surfaces 1a of the side guide rails 1, 1. , 1a.

The second horse car support frame _F2 includes a pair of horse car support members 10, 10 arranged on the left and right sides, and a plurality of intermediate connecting members 1 that connect the lower parts of these parts.
1, 11... and a front end wall 1 connecting the front end portions to each other.
It is composed of 2. The horse car support members 10, 10 include horizontal support parts 10a, 10a on which the horse car H is placed, and side wall parts 10b, 10b. The side wall portions 10b, 10b have an inwardly facing horizontal axle guide surface 10c having a U-shaped cross section,
10c is formed. Axle guide surface 10c, 1
0c, U-shaped lock members 13, 13 for guiding the axle a of the horse car H, and for fixing the axle position of the horse car H at approximately the center position;
is provided. This U-shaped lock member 13
The lock lever 14 rotates the lock member 13 from the outside of the axle guide surface 10c, the rotation transmitting member 15 transmits the rotation of the lock lever 14 to the lock member 13, and the return spring 16 that always holds the lock lever 14 in a predetermined position. A locking device _L2 is configured. This hose car lock device L ₂ includes a rotation transmission member 15
This differs from the horse car lock device _L1 in that it is provided with a lock lever 14, which allows the lock lever 14 to be located at the rear end of the horse car support frame _F2 . By arranging the lock lever 14 at the rear end of the horse car support frame F ₂ , the lock lever 14 can be positioned easily while the operator is standing on the ground.
4 can now be operated. Sliders 17, 17 are fixed to the outer surfaces of the side wall portions 10b, 10b, respectively, and a limit switch operating protrusion that engages with the limit switches Ls ₁ , Ls ₂ is provided on the outer surface of one of the side wall portions 10b. D (see Figures 1 and 3)
is provided. Engagement holes 18, 18 are provided at the rear end portions of the side wall portions 10b, 10b, respectively, to engage with the upward engagement protrusions 9, 9. A support frame connecting device J is constituted by the engaging projections 9 and the engaging holes 18, 18. The hose support members 10, 10 have horizontal support portions 10a,
The lower surface of 10a is supported by the lower guide rails 2, 2, and the sliders 17, 17 on the outer surface of the side wall portions 10b, 10b are guided by the guide surfaces 1a, 1a of the side guide rails 1, 1. It's becoming like that.

As shown in FIGS. 1 and 2, the support frame driving device P includes a pair of double-acting cylinder devices P ₁ and P ₁ disposed on the left and right sides of the vehicle body B. As shown in FIGS. The rear ends of the cylinder devices P ₁ and P ₁ are connected to the hose car support member 10 of the hose car support frame F ₂ ,
It is connected to the rear end of 10. When the cylinder devices P ₁ and P ₁ are extended, the hose car support frame F ₂ is moved rearward. Note that the drive control device for the cylinder devices P ₁ and P ₁ is shown in FIGS. 10 and 11, and will be described later.

As shown in FIG. 1, FIG. 2, and FIG.
It has 9. The vertical guide members 19, 19 are
It is a hollow rectangular parallelepiped member, and guide slits 19a, 19a are formed on its rear surface. Locking members 20, 20 are disposed on both outer surfaces of the vertical guide members 19, 19. This locking member 20 is a member for holding the cargo receiving platform 2 (described later) in a vertical position, and is composed of a locking lever 20b that is rotatable around a shaft 20a and a stopper 20c that restricts the rotational position of the locking lever 20b. . Also,
One vertical guide member 19 is equipped with a limit switch Ls ₃ for detecting the ascending position (see Figures 1 and 7).
is provided. The limit switch _Ls3 for detecting the raised position is arranged so as to be turned on only when the load receiving platform 22, which will be described later, is in the raised position.
The slide members 21, 21 guided in the vertical direction by the vertical guide members 19, 19 each have an elongated flat support member 21a and a flat leg member 21b connected along the center line of the front surface thereof. It is a member with a T-shaped cross section. The flat support member 21a is formed with a limit switch operating projection D' (see FIG. 7) that can be engaged with the limit switch _Ls3 for detecting the raised position. The flat leg member 21b has rollers 21c, 21c, . . . on both sides at two positions spaced apart in the vertical direction.
is provided. The flat leg member 21b is
The rollers 21c, 21c, . . . and the flat leg member 21b are arranged inside the vertical guide members 19, 19, and the flat supporting member 21a is inserted into the vertical guide member. It is located outside of 19. The slide member 21 moves up and down along the vertical guide member 19 while the rollers 21c, 21c, . . . roll in contact with the inner surface of the vertical guide member 19. The slide member 2
A loading platform 22 is supported at the lower end portions of the containers 1 and 21 so as to be rotatable between a vertical position and a horizontal position. As shown in FIGS. 2 and 7, the load receiving platform 22 is formed in a substantially U-shape in plan view, and has rearwardly extending portions 22a, 22a extending toward the rear of the vehicle body. The load receiving platform 22 is provided with horizontal attitude support stoppers 23, 23 at portions close to the slide members 21, 21. As is clear from FIGS. 1 and 7, the loading platform 22
The horizontal posture is held by the horizontal posture supporting stoppers 23, 23 coming into contact with the lower ends of the flat leg members 21b, 21b. In addition, on the side of the loading platform 22, there is a loading platform 22.
Posture holding pins 24, 24 are provided for use in holding 2 in a vertical position. The posture holding pins 24, 24 are locked by locking members 20, 20 on both outer surfaces of the vertical guide members 19, 19, so that the loading platform 22 is held in a vertical posture. There is. Side guide rails 25, 25, lower guide rails 26, 26, and stoppers 27, 27 (see FIG. 2 and FIGS. 7 to 9) are arranged on the upper surface of the rearward extending portions 22a, 22a of the load receiving platform 22, respectively. It is set up. The side guide rails 25, 25 are constructed similarly to the side guide rails 1, 1 on the vehicle body B described above, and the lower surface guide rails 26, 26 are constructed similarly to the lower surface guide rails 2, 2 described above. Therefore,
The lower surface of the horse car support frame _F1 is supported by lower guide rails 26, 26, and the sliders 8, 8 on the outer surface of the horse car support frame _F1 are guided by side guide rails 25, 25. ing. In addition, as shown in FIGS. 8 and 9, the stopper 27 includes a rod member 27a bent into a curved shape, a biasing spring 72b arranged on the lower surface of the cargo receiving platform 22, and an opening formed in the cargo receiving platform 22. 2
7c etc. And the rod member 27
A is a part of the opening 27c formed in the loading tray 22, and a portion of the opening 27c always protrudes from the opening 27c formed in the loading tray 22, and the positioning opening _3d (the third
(Fig.) to position the hose car support frame _F1 on the cargo receiving platform 22.

As shown in FIG. 7, the rope 28 to which one end of one of the plate-shaped leg members 21b, 21b is connected is sequentially connected to the fixed pulleys 29, 30, 3.
1 and the movable pulley 32, and the other end is the vehicle body B.
Fixed. Further, the flat leg member 21
The rope 33, which has one end connected to the other of the ropes b and 21b, is wound around fixed pulleys 34 and 35 and a movable pulley 36 in order, and the other end is fixed to the vehicle body B. The movable pulleys 32 and 36 are connected to the piston rod 3 of a single-acting cylinder device 37 for lifting and lowering the loading platform.
It is supported by the tip of 8. As is clear from FIG. 7, when the cylinder device 37 for lifting the loading platform is expanded, the ropes 28, 33 are pulled, the flat leg members 21b, 21b are raised, and the cylinder device 37 for lifting the loading platform is contracted. Then, the flat leg member 21
b, 21b are adapted to descend under the action of gravity.

Cylinder device P ₁ of the above-mentioned support frame drive device P,
A hydraulic circuit diagram of the drive control device for P ₁ and the cylinder device 37 for lifting the loading platform is shown in FIG.
Further, FIG. 11 shows a control circuit diagram of the electrical system. However, since the cylinder devices P ₁ and P ₁ are controlled in the same manner (they are controlled to extend or contract at the same time), only one cylinder device is shown in FIG.

In FIG. 10, the power unit 39 has a high pressure side output end 39a and a low pressure side output end 39b, and also has a high pressure line l ₁ connected to the discharge side of a pump 40 driven by a motor M. and,
It has a low pressure line l ₂ connected to the oil tank. The high pressure line _l1 is the high pressure side output end 3.
9a, and the low pressure line _l2 is connected to the low pressure side output end 39b. Also, high pressure line l ₁
A check valve 41 is installed in the high pressure line.
A relief valve 42 is provided between _l1 and the low pressure line _l2 . Further, the high pressure line _l1 and the low pressure line _l2 are connected via a check valve 43, a spring offset type two-port two-position switching valve 44, and a throttle valve 45.

The valve block 46 connected to the power unit 39 has a high-pressure side input end 46a, a low-pressure side input end 46b, an output end 46c for raising and lowering the loading platform, and output ends 46d and 46e for moving forward and backward. The output end 39a of the power unit 39 is
It is connected to the high pressure side input end 46a of the valve block 46, and the output end 39b of the power unit 39 is connected to the low pressure side input end 46b of the valve block 46. Further, the valve block 46 includes a 3-port 2-position electromagnetic switching valve 47, a 4-port 3-position electromagnetic switching valve 48, a pressure reducing valve 49, and a variable throttle valve 50. And 3 port 2 position solenoid switching valve 4
One input port of No. 7 is connected to the high pressure side input end 46a.
1 of the 4-port 3-position solenoid switching valve 48.
The input ports are connected to the low pressure side input end 46b. The remaining input port of the 4-port, 3-position electromagnetic switching valve 48 and one output port of the 3-port, 2-position electromagnetic switching valve 47 are connected by a connection line l ₃ having a pressure reducing valve 49 . The remaining output port of the 3-port 2-position electromagnetic switching valve 47 is connected via a variable throttle valve 50 to the output end 46c for lifting and lowering the loading platform. Further, the two output ports of the 4-port 3-position electromagnetic switching valve 48 are connected to forward/backward output ends 46d and 46e, respectively.

The load receiving platform lifting output end 46c is connected to the loading platform lifting cylinder device 37 via a lifting line _l4 having a check valve 51 with a fixed throttle. Further, the forward/backward output end 46d is connected to one end of the cylinder devices _P1 , _P1 via the extension line _l5 , and the forward/backward output end 46e is connected to the cylinder devices _P1 , P1 via the contraction side line _l6 . Connected to the other end of ₁ .

FIG. 11 shows a control circuit for the hydraulic circuit shown in _FIG .
Equipped with S ₂ class. The selection switch _S2 includes an advancement/retraction side terminal _S21 and an elevation side terminal _S22 .

The limit switch Ls 1 for detecting the advanced position and the limit switch Ls ₂ for detecting the backward position are provided in parallel between the ascending switch S ₃ or the descending switch S ₄ and _the ascending/descending terminal S ₂₂ . Further, the lifting side terminal _S22 is connected to one solenoid (on the right side in FIG. 11) of the 3-port 2-position electromagnetic switching valve 47. Therefore, when the operator turns on the main switch S ₁ and connects the selection switch S ₂ to the lifting side terminal S ₂₂ , the 3-port 2-position solenoid switching valve 47 operates as shown in FIG. 10 or 11. Move left from the position. The high pressure side input end 46a is connected to the cylinder device 37 for lifting and lowering the loading platform.
connected to. If either the limit switch Ls ₁ for detecting the forward position or the limit switch Ls ₂ for detecting the backward position is ON, the lift switch
Considering the case where the worker turns on S ₃ ,
Current flows through the solenoid of electromagnetic switch _S5 . Then, the motor M rotates and the pump 40 is driven. At this time, since the 2-port 2-position switching valve 44 is in the position shown in FIG. 10, the oil discharged from the pump 40 cannot pass through the 2-port 2-position switching valve 44. Therefore, the oil discharged from the pump 40 is supplied to the loading platform lifting cylinder device 37 through the 3-port 2-position electromagnetic switching valve 47, the lifting line _l4 , etc. Then, the cylinder device 37 for lifting the loading platform
expands, and at this time, as is clear from FIG. 7, the loading platform 22 rises. When the loading platform 22 reaches the raised position, the raised position detection limit switch Ls ₃ is activated.
It becomes ON. In this state, turn off the lift switch _S3
However, check valve 41 (see Fig. 10) and 2
Due to the action of the port 2-position switching valve 44, the hydraulic oil in the cylinder device 37 for lifting and lowering the loading platform does not leak out. Therefore, the cylinder device 3 for lifting and lowering the loading platform
The loading platform 22 of No. 7 is held in the raised position.

Next, when the lowering switch _S4 is turned on, current flows through the solenoid of the 2-port 2-position switching valve 44. Then, the 2-port 2-position switching valve 44 moves to the left from the state shown in FIG. Then, the hydraulic oil in the cylinder device 37 for lifting and lowering the loading platform is transferred to the check valve 43 and the 2-port 2-position switching valve 44.
Outflows to the low pressure line L ₂ side through. For this reason,
The cylinder device 37 for lifting and lowering the loading platform contracts. At this time, as is clear from FIG. 7, the cargo receiving platform 22 is lowered.

A limit switch _Ls3 for detecting a raised position is provided between the advance switch _S6 or the reverse switch _S7 and the advance/retreat side terminal _S21 . In addition, the advancing/retracting side terminal S ₂₁ is connected to the 3-port 2-position solenoid switching valve 4.
7 (on the left in FIG. 11). Therefore, when the operator turns on the main switch S ₁ and places the selection switch S ₂ on the forward/backward terminal S ₂₁ , the 3-port 2-position solenoid switching valve 47
is held in the position shown in FIG. 10 or 11. The high pressure side input end 46a is connected to a 4-port 3-position electromagnetic switching valve 48 via the connection line _l3 . The advancing switch _S6 is a dual switch, and is composed of a changeover valve operating switch _S61 and an electromagnetic switch operating switch _S62 . The switching valve operating switch S ₆₁ is connected to one solenoid of the 4-port 3-position electromagnetic switching valve 48 (the left side in FIGS. 10 and 11), and the electromagnetic switch operating switch S ₆₂ is Connected to Switch S ₅ . The reverse switch S ₇
It is also a dual switch similar to the advance switch S ₆ ,
It is composed of a switch S ₇₁ for operating a changeover valve and a switch S ₇₂ for operating an electromagnetic switch. The switching valve operating switch S ₇₁ is connected to the other solenoid (the right side in FIGS. 10 and 11) of the 4-port 3-position electromagnetic switching valve 48, and the electromagnetic switch operating switch S ₇₂ is connected to the solenoid of the other (right side in FIGS. 10 and 11) Connected to Switch S ₅ . Now, considering the case where the limit switch Ls ₃ for detecting the ascending position is ON, when the operator turns on the advance switch S ₆ , the 4-port 3-position solenoid switching valve 48 moves to the right in Figs. 10 and 11. As it moves, a current flows through the solenoid of electromagnetic switch _S5 . At this time, the 4 ports 3
The position electromagnetic switching valve 48 is at a position where the connection line _l3 and the extension side line _l5 are connected, and the contraction side line _l6 and the low pressure line _l2 are connected. At the same time, the motor M rotates and the pump 40 is driven. At this time, since the spring offset type two-port two-position switching valve 44 is in the position shown in FIG.
It cannot pass through the position switching valve 44. Therefore, the oil discharged from the pump 40 is supplied to the extension line l ₅ via the 3-port 2-position electromagnetic switching valve 47, the connection line l ₃ , and the 4-port 3-position electromagnetic switching valve 48. Then, the cylinder devices P ₁ and P ₁ expand. At this time, as is clear from Figures 1 and 2, the horse car support frame _F2 advances (moves to the right in the figure).
do. When the hose car support frame _F2 reaches the advanced position, the limit switch _Ls1 for detecting the advanced position is activated.
It becomes ON. In this state, turn off advance switch _S6
, the 4-port 3-position electromagnetic switching valve 48 is held at the neutral position by the return spring.
Then, the hydraulic oil in the cylinder devices P ₁ and P ₁ will not leak out. Therefore, the cylinder device
The hose car support frame F ₂ connected to P ₁ and P ₁ is held at the advanced position (right position in the figure).

When the reverse switch _S7 is turned on, the 4-port 3-position electromagnetic switching valve 48 moves to the left, and the connection line _l3 is connected to the contraction side line _l6 . Since the connection line _l3 is connected to the high pressure line _l1 , the cylinder devices _P1 , _P1 are contracted and the hose car support frame _F2 is moved back.

As can be seen from the explanation of FIG. 11 above, the raising switch S ₃ or lowering switch S ₄ and the power supply 52
There is a limit switch for detecting the advancing position between the
Ls ₁ and a limit switch Ls ₂ for detecting the backward position are arranged in parallel. Therefore, unless either the limit switch Ls ₁ for detecting the forward position or the limit switch Ls ₂ for detecting the backward position is ON, the upward switch S ₃ and the downward switch S ₄ will not function. i.e. horse car support frame
Except when F ₂ is in the advanced or retracted position,
The cylinder device 37 for lifting and lowering the loading platform does not operate. Therefore, the hose car support frame F ₁ on the loading platform 22 in the raised position always has a predetermined positional relationship with respect to the horse car support frame F ₂ in the advanced position, so that the hose car support frame F ₂ on the vehicle body B and,
Horse car support frame that rises with the loading platform 22
Connection or disconnection with F ₁ can be easily performed in the raised position.

Also, advance switch S ₆ or reverse switch S ₇
A limit switch Ls ₃ for detecting a rising position is arranged between the power source 52 and the power source 52 . Therefore, unless the upward position detection limit switch Ls ₃ is ON, the advance switch S ₆ and the reverse switch S ₇ will not function. That is, the cylinder devices P ₁ and P ₁ of the support frame drive device P do not operate except when the loading platform 22 is in the raised position. This means that the hose car support frames F ₂ and F ₁ do not move forward or backward when the loading platform 22 is moving or in the lowered position. By doing this, the hose car support frame F ₁ moves onto the cargo receiving platform 22 only when the receiving platform 22 is in the raised position.
Mistakes such as the horse car support frame _F1 falling from the vehicle body B can be prevented.

Next, in the above-described embodiment, the operation when the two horse cars H mounted on the vehicle body B are sequentially lowered to the ground will be described.

In the implementation of the present invention having the above-described configuration, as shown in _FIG .
The second horse car support frame _F2 is arranged on the vehicle body B in a row on the front side. Those hose car support frames F ₁ and F ₂ are connected to the support frame coupling device J9,
9, 18, and 18. The hosecar support frames F ₁ and F ₂ are connected to the hosecar H and F 2 by hosecar lock devices L ₁ and L ₂ , respectively.
H is fixed. the first portion located on the rear side;
When lowering the hose car H fixed to the hose car support frame _F1 , first, the loading platform 22 is held horizontally in its raised position as shown in FIG. At this time, the limit switch Ls ₃ for detecting the ascending position is
It is ON. Therefore, main switch _S1
Turn on the selection switch _S2 and set it to the lifting side terminal.
After connecting to S ₂₂ , press the advance switch S ₆ ,
The 3-port 2-position electromagnetic switching valve 47 is held in the state shown in FIGS. 10 and 11, and the 4-port 3-position electromagnetic switching valve 48 is moved to the right. At the same time, motor M starts. Therefore, the hydraulic oil discharged from the pump 40 is supplied to the extension side line _l5 via the high pressure line _l1 , the connection line _l3, etc. Then, the cylinder devices P ₁ and P ₁ extend. Then, the horse car support frames F ₂ and F ₁ move forward (move to the right in FIGS. 1, 2, and 12), resulting in the state shown in FIG. 12A. At this time, the horse car support frame F ₂ is in the advanced position, and the horse car support frame F ₁ is on the loading platform 22 . The position of the hose car support frame _F1 is determined by the positioning openings 3d and 3 that engage with the stoppers 27 and 27 on the loading platform 22.
d. Even if the advancing switch _S6 is released in this state, that state (the state shown in FIG. 12A) is maintained. At this time, the limit switch Ls ₁ for detecting the advanced position is ON.
In this state, when the selection switch _S2 is connected to the lifting side terminal _S22 and the lowering switch _S4 is pressed, the loading platform 22 starts to lower as already explained. At this time, the upward protrusion 9 of the horse car support frame _F1 ,
9 is the engagement hole 18, 1 of the hose car support frame _F2 .
Naturally leaves from 8. Then, the horse car support frame _F1 and the horse car H fixed thereto are lowered together with the loading platform 22, and the loading platform 22 is lowered to the lowered position (ground) shown in FIG. 12B. When the loading platform 22 has been lowered to the ground, release the lowering switch _S4 . Next, in the lowered position shown in Fig. 12B,
Rotate the lock lever 6 of the horse car lock device _L1 to unlock the horse car lock device _L1 . Then, that hose car support frame
Horsecar H, which was fixed on F ₁ , becomes free and can be moved to a predetermined position on the ground. When the first hose car H is moved in this manner, an empty hose car support frame F ₁ is left on the loading platform 22.

Next, press the lift switch S ₃ to turn it on. At this time, the advanced position detection limit switch _Ls1 remains ON. Therefore, the empty hose car support frame F ₁ and the loading platform 22 are as follows:
Move to the first elevated position. When the loading platform 22 moves to the raised position, release the raising switch _S3 . At this time, the loading platform 22 is held in the raised position as described above, and the raised position detection limit switch _Ls3 is held in the ON position.

Next, the lock lever 14 of the horse car locking device _L2 is rotated so that the horse car H fixed on the horse car support frame _F2 can be freely moved. Then, the hose car H is pulled rearward and moved onto the hose car support frame _F1 on the load receiving platform 22, as shown in FIG. 12C. Then, the horse car H is fixed _on the horse car support frame _F1 using the horse car locking device L1. Next, in the same manner as described above, connect the selection switch _S2 to the up/down side terminal _S22 and then press the down switch _S4 . Thereafter, the horse car H can be lowered onto the ground in the same manner as when the first horse car H was lowered. Then, the horse car H is moved to an appropriate position on the ground.

To load the hose car onto the fire engine, simply follow the unloading procedure described above in the reverse order.

Although the embodiments of the present invention have been described in detail above, the present invention includes
The present invention is not limited to the above embodiments and is described in the claims.
Various design changes are possible. For example, instead of placing a total of two horse car support frames F ₁ and F ₂ on the vehicle body B, it is also possible to place three or more in total, and the loading platform provided at the rear end of the vehicle body B can be lifted and lowered. As the device C, it is possible to employ devices with various conventionally known configurations. Furthermore, as a configuration in which the advance switch S ₆ or the reverse switch S ₇ functions only when the loading platform 22 is in the raised position, a conventionally well-known suitable position detector and a microcomputer are used, and the loading platform is controlled by the microcomputer. It is also possible to adopt a configuration in which the advance switch _S6 or the reverse switch _S7 functions only when 22 is in the raised position.

C. Effects of the Invention According to the safety device of the fire engine hose car cargo handling device of the present invention described above, the hose car support frames to which the hose cars are fixed are lined up front and back and placed on the body B of the fire engine, and are placed at the forefront. A support frame drive device that moves the hose car support frame back and forth is provided, so when a hose car other than the one placed at the rear end is pulled out to the rear of the vehicle body B or when the hose cars are placed side by side on the vehicle body B, the operator can There is no need to go to the trouble of climbing onto vehicle body B. Therefore, the hose car can quickly handle cargo from the fire engine from the ground.

In addition, since the structure is such that power is supplied to the support frame driving device only when the loading platform is detected to be in the raised position, the loading platform is in the lowered position or while moving up and down. The hose car support frame does not move forward or backward. Therefore, accidents such as falling of the hose car support frame, hose car, etc. from the vehicle body to the ground due to incorrect operation by a worker do not occur.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of a hose car cargo handling device for a fire engine according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is an exploded perspective view of essential parts of the embodiment, and FIG. 4 is a view taken along the - line in FIG. 1, FIG. 5 is an explanatory diagram of the operation of the hose car lock device shown in FIG. 4, and FIG. 7 is an exploded perspective view of the loading platform lifting device shown in FIG. 1, FIG. 8 is an enlarged side view of the stopper, FIG. 9 is a view taken along the - line in FIG. 8, and FIG.
The figure is a hydraulic circuit diagram of the hose car cargo handling device for a fire engine shown in Figure 1, Figure 11 is a control circuit diagram of the electrical system, and Figures 12A-D are operational diagrams of the same embodiment.
FIG. 13 and FIG. 14 are a perspective view and a side view of the hose car used in the same embodiment. B... Vehicle body, C... Loading platform lifting device, F ₁ , F ₂
... Horse car support frame, L ₁ , L ₂ ... Horse car lock device, J ... Support frame connection device, P ... Support frame drive device, 22 ... Load receiving platform.

Claims (1)

[Scope of Claims] 1. A loading platform elevating device C having a loading platform 22 that is moved between a raised position and a lowered position at the rear end of the vehicle body B, and a loading platform 22 at the rear end of the vehicle body B. A plurality of hose car support frames F ₁ , F ₂ arranged in front and back so as to be movable forward and backward; horse car lock devices L ₁ , L ₂ provided on these hose car support frames F ₁ , F ₂ respectively; A support frame connection device J that removably connects adjacent hose car support frames F ₁ and F ₂ to each other, and a hose car support frame F that is disposed at the forefront of the plurality of hose car support frames F ₁ and F ₂ . ₂ , and a loading platform position detector that detects whether or not the loading platform 22 is in the raised position.
A drive control device configured to supply power to the support frame drive device P only when it is detected that the loading platform 22 is in the raised position. Safety device for hosecar cargo handling equipment. 2 The drive control device includes a support frame position detector that detects whether or not _the horse car support frame F ₂ disposed at the forefront is at a predetermined position, 2. The safety device for a hose car cargo handling device for a fire engine according to claim 1, wherein the safety device is configured such that power is supplied to the loading platform elevating device C only when it is detected that the cargo handling platform is moving.