JP4675173B2 - Hose car lift - Google Patents

Description

  The present invention relates to a hose car lift for loading and unloading a hose car for fire fighting on a loading platform of a vehicle such as a fire truck.

Vehicles such as fire engines are loaded with a fire hose car around which a fire hose is wound. This hose car is carried to the fire site by a fire truck, and is moved down from the fire truck to the ground at the fire site and used for fire extinguishing work. A hose car lift for loading and unloading the hose car on the loading platform is provided on the loading platform of the fire truck on which the hose car is loaded.
Such a hose car lift is provided with a load receiving table provided at the rear part of the loading platform of the fire truck and an elevating device for raising and lowering the loading platform. A plurality of hose cars are loaded on a fire truck, and one of them is fixed and loaded on a cargo cradle by a lashing device provided on the cargo cradle of the hose car lift (for example, patent documents) 1).

  A fire truck loaded with a hose car as described above often travels with the load receiving platform being stopped at a position lower than the height of the fire truck loading platform when carrying the hose car to the fire extinguishing site. By doing so, the hose car can be quickly lowered to the ground, and fire extinguishing activities can be performed more quickly.

JP 2002-36939 A (FIG. 1)

On the other hand, in the conventional hose car lift described above, in order to stop the load receiving platform at a position lower than the height of the fire truck loading platform, the operator has visually determined the stop position of the load receiving platform. It was. Such variation in the stop position of the load receiving platform causes the following problems. For example, if the position of the cargo cradle is too low, the fire truck's departure angle cannot be secured sufficiently, and the lower surface of the cargo cradle interferes with obstacles on the ground while the fire truck is running, which may interfere with the running of the fire truck. There was a fear of coming. In addition, if the position of the cargo cradle is too high, the descent time until the cargo cradle is lowered to the ground becomes long, which may hinder quick fire extinguishing work.
This invention is made | formed in view of such a situation, and it aims at providing the hose car lift which can make a vehicle drive | work without trouble in the state which loaded the hose car on the receiving stand.

The present invention is provided at a rear portion of a vehicle loading platform and on which a hose car is loaded, a loading position on which a base end portion of the loading platform is attached, a transfer position where the hose car is transferred to the loading platform, and a landing position where the hose car is lowered to the ground Elevating device that raises and lowers the load receiving table in the vertical direction, and the load receiving table loaded with the hose car is stopped at the loading traveling position between the transfer position and the landing position. A hose car lift capable of driving a vehicle, wherein a contact position on a rising locus of a base end portion of the load receiving table on a rear end side of the chassis frame and a non-contact position deviating from the rising locus And a lift restricting stopper that stops the load receiving table at the loading travel position by contacting the base end of the rising load receiving table in the state of being advanced to the contact position. And the ascent rule Is connected to the stopper, a first driving means for advancing and retracting drive the elevation regulating stopper and the non-contact position and the contact position, the rear end of the chassis frame of the vehicle, the receiving platform of the base end portion Between the abutting position on the lowering trajectory and the non-abutting position deviating from the descending trajectory, and in the state of having advanced to the abutting position, A lowering restriction stopper for contacting the end part to restrict the load receiving table from descending from the loading travel position; and a lowering restriction stopper connected to the lowering restriction stopper; And a second drive means for driving forward and backward, and the second drive means has a rotary solenoid as a power source for driving the lowering restriction stopper forward and backward, and lowers the load receiving table from the loading travel position. A lowering switch that outputs a command, a limit switch that detects that the load receiving platform is located at the loading travel position, and an operation command for the lowering switch that is output when the limit switch is in a detection state, Lowering control in which the lifting device is slightly raised by the lifting device, then the lowering restriction stopper is retracted to the non-contact position by the rotary solenoid, and the lifting device is lowered by the lifting device after being retracted. And means .

  According to the hose car lift configured as described above, the first drive means advances the lifting restriction stopper to the contact position, thereby bringing the load receiving table rising from the landing position into contact with the lifting restriction stopper and It can be stopped accurately at the travel position. Further, when the hose car is transferred to the loading platform of the vehicle, the lifting restriction stopper is retracted to the non-contact position by the first driving means, and the loading platform is raised to the transfer position without being brought into contact with the lifting restriction stopper. be able to.

Further , by causing the lowering restriction stopper to advance to the contact position by the second driving means, it is possible to prevent the load receiving platform at the loading travel position from descending downward. If necessary, the descent of the load receiving table can be allowed by retracting the lowering restricting stopper to the non-contact position by the second driving means.

Further, when the load cradle is positioned at the loading travel position, even as a load of the receiving platform it has been acting on the descending restriction stopper, so to slightly raise the receiving platform, it releases the load. As a result, the lowering restriction stopper can be retracted without difficulty, and the restriction can be quickly released.

  As described above, according to the hose car lift of the present invention, when raising the load receiving table, the load receiving table can be accurately stopped at the loading travel position, so that the vehicle can be operated with the hose car loaded on the load receiving table. It can be run without hindrance.

  Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a rear side view of a fire engine equipped with a hose car lift according to an embodiment of the present invention, and FIG. 2 is a front view of the hose car lift. In the figure, a hose car lift 1 is installed at the rear end of a chassis frame S2 of a fire truck S as a vehicle, a load receiving table 2 on which a hose car H is loaded, an elevating device 3 for moving the load receiving table 2 up and down, have.

  1 and 2, the lifting device 3 includes a pair of guide columns 4 fixed to the rear end of the chassis frame S2 of the fire engine S and a pair of elevators that move up and down along the groove portions 4 a provided in the guide columns 4. And a slide column 5. A pair of guide support | pillar 4 is connected by the frame member 6 arrange | positioned in parallel with the vehicle width direction. The upper surface of the frame member 6 is flush with the loading platform S3, and is fixed to the rear end portion of the chassis frame S2. A hydraulic cylinder 34 that raises and lowers the slide column 5 via a chain or the like is disposed in one of the pair of guide columns 4. The hydraulic cylinder 34 is configured such that the hydraulic pressure is increased and extended by a hydraulic pump driven by a motor (not shown), and the hydraulic valve is contracted by opening an electromagnetic valve (not shown). A base end portion of the load receiving platform 2 is fixed to the lower portion of the slide support 5, and the load receiving platform 2 can be moved up and down in the vertical direction by moving the slide support 5 up and down.

  The load receiving platform 2 is a substantially horizontal plate-like member, and a hose car H is loaded on the upper surface thereof. A guide plate 2 c for positioning the position of the hose car H in the width direction on the load receiving stand 2 is erected on the side of the load receiving stand 2 in the vehicle width direction. Further, a tapered step guide portion 2 a is provided at the front end portion of the load receiving table 2 so that the hose car H can easily get on the upper surface of the load receiving table 2 when being loaded on the load receiving table 2. The loading platform 2 is moved up and down by a lifting device 3 between a transfer position X for transferring the hose car H to the loading platform S3 and a landing position Y for lowering the hose car H to the ground.

Further, lashing devices 7 for lashing the hose cars H loaded on the load receiving table 2 are provided on both sides of the load receiving table 2 in the vehicle width direction. This lashing device 7 has a pair of receiving portions 7 a on both sides of the load receiving platform 2. The receiving portion 7a is supported by a support member 7b erected from the cargo receiving platform 2, and has a fixing mechanism for fixing the end portion of the axle H1 of the hose car H therein. The securing device 7 secures the hose car H so as not to move in the front-rear direction of the vehicle by fixing both ends of the axle H1 with the receiving portions 7a. The receiving portion 7a is connected to operating levers 8 and 9 provided at both rear ends in the width direction of the load receiving platform 2 via a link mechanism, and the axle H1 is fixed and released by operating the operating levers 8 and 9. can do.
Further, the link mechanism has a grounding member 10 that protrudes from the lower surface of the load receiving base 2 so as to be movable up and down. The grounding member 10 is configured to move upward when the lower surface of the load receiving platform 2 is landed and to operate the link mechanism so that the receiving portion 7a releases the fixation of the axle H1. In other words, if the load receiving platform 2 is lowered to the landing position Y, the hose car H can be unfastened by the grounding member 10 and the hose car H can be quickly lowered from the load receiving platform 2 without any particular operation by the operator.

3 is an enlarged view taken along the line III-III in FIG. 1, and FIG. 4 is a view taken along the line IV-IV in FIG. As shown in the drawing, a pair of contact members 2 b projecting toward the front side of the vehicle are provided on the end surface on the base end side of the load receiving platform 2.
A stopper driving device 11 is provided on the lower surface of the frame member 6. The stopper driving device 11 includes a cover member 13 projecting downward from the lower surface of the frame member 6, a rotary solenoid 12 fixed inside the cover member 13, and a cover member 13 on the left and right sides of the cover member 13. First and second base members 14, 15, etc. that are substantially parallel and project downward from the lower surface of the frame member 6 are provided.
The base members 14 and 15 have outer surfaces 14a and 15a on the vehicle outer side, which are inside the pair of contact members 2b, respectively, and a slight gap is secured with respect to the inner surface of the contact member 2b. Are arranged to be. In other words, the pair of abutting members 2b are arranged such that when the load receiving platform 2 moves up and down in the vertical direction, these outer side surfaces 14a and 15a are placed with a slight gap between the outer side surfaces 14a and 15a of both the base members 14 and 15. It is provided to move up and down along. Further, in FIG. 4, the load receiving platform 200 when the contact member 2 b is raised until it comes into contact with the lower surface of the frame member 6 is indicated by a two-dot chain line. Thus, the contact member 2b is provided so that the upper surface of the load receiving platform 2 is flush with the load platform S3 when the contact member 2b is raised to contact with the lower surface of the frame member 6. Further, the contact member 2b prevents the load receiving platform 2 from rising above this position. That is, the height position of the load receiving platform 200 is a transfer position X for transferring the hose car H to the load loading platform S3.

The first base member 14 is provided with an ascending restriction stopper 16 and a descending restriction stopper 17 that protrude from the outer surface 14a at a predetermined interval in the vertical direction. Similarly, the rising restriction stopper 18 and the falling restriction stopper 19 whose front ends protrude from the outer surface 15a are also attached to the second base member 15 at a predetermined interval in the vertical direction. There is a gap K1 between the tip 16a of the rise restricting stopper 16 and the tip 17a of the drop restricting stopper 17, and between the tip 18a of the rise restricting stopper 18 and the tip 19a of the drop restricting stopper 19, respectively. , K2 is secured. The pair of abutting members 2b are located between the gap K1 and the gap K2, and the ascent regulating stoppers 16 and 18 and the descending regulating stoppers 17 and 19 regulate the vertical movement of the abutting member 2b. By doing so, the movement of the cargo receiving platform 2 in the vertical direction is restricted.
In addition, in the height position of the receiving platform 2 in the state regulated as described above, a departure angle that does not hinder the traveling of the fire truck S is secured, and the fire truck S has a hose car on the receiving platform 2. It is possible to travel without hindrance in a state where the load receiving platform 2 is set at this height position while loading H.
As described above, the height position of the receiving platform 2 regulated by the regulation stoppers 16, 17, 18, and 19 is the loading travel position Z at which the fire truck S can travel without hindrance with the hose car H loaded. is there.

  The ascending restriction stopper 16 attached to the first base member 14 is a plate-like member formed using a steel plate or the like, and is inserted into the upper guide hole 14b having a square cross section provided in the first base member 14 in the vehicle width direction. Has been inserted to be movable. The lowering restricting stopper 17 is also a plate-like member like the raising restricting stopper 16, and is inserted into the lower guide hole 14c formed at a predetermined interval from the upper guide hole 14b so as to be movable in the vehicle width direction. Yes. Further, the ascending restriction stopper 18 and the descending restriction stopper 19 attached to the second base member 15 are also inserted into the upper and lower guide holes 15b and 15c formed in the second base member 15 so as to be movable in the vehicle width direction. Yes.

  5 is a cross-sectional view taken along line VV in FIG. The first base member 14 includes a frame 14e and a cover 14d that covers the outside of the frame 14e. As illustrated, the upper guide hole 14b is formed so as to penetrate the frame 14e and the cover 14d. A spring P is attached between a bracket 16b provided at the rear end portion of the ascent restriction stopper 16 and a bracket 14f provided at the side surface of the frame 14e. The first base member 14 is biased in a direction protruding from the outer side surface 14a (vehicle outward side). Note that the spring P is attached to the lowering restriction stopper 17 in the same manner as the raising restriction stopper 16, and is biased in a direction protruding from the first base member 14. Further, in the ascent restriction stopper 18 and the ascent restriction stopper 19, as described above, the springs P are individually attached and urged in the direction protruding from the second base member 15 (vehicle outward side).

Tapered surfaces 16a1 and 18a1 are formed on the upper surfaces of the tip portions 16a and 18a of the ascending restriction stoppers 16 and 18, respectively, which descend from the inside of the vehicle to the outside (see FIG. 3). As a result, when the contact member 2b descends from above, the contact member 2b contacts the tapered surfaces 16a1 and 18a1 of the rise restricting stoppers 16 and 18, and the rise restricting stoppers 16 and 18 are moved into the vehicle as they fall. (See FIG. 6). Since the rising restriction stoppers 16 and 18 are urged outward by the spring P by the spring P as described above, the rising restriction stoppers 16 and 18 come into contact with each other while allowing them to be pushed inwardly of the vehicle. If the member 2b passes the ascending restriction stoppers 16 and 18, the member 2b returns to the position where the original tip portion protrudes due to the urging force of the spring P. On the other hand, when the abutting member 2b rises from below, the abutting member 2b abuts on the substantially horizontal lower surfaces of the ascent restriction stoppers 16 and 18, and thus is further prevented from rising.
In other words, the rise restriction stoppers 16 and 18 allow the contact member 2b to be lowered while the tip portions 16a and 18a protrude, and can restrict and stop the rise of the contact member 2b.

Further, tapered surfaces 17a1 and 19a1 rising from the inside of the vehicle to the outside are formed on the lower surfaces of the tip portions 17a and 19a of the lowering restriction stoppers 17 and 19, respectively (see FIG. 3). As a result, the lowering restriction stoppers 17 and 19 that are urged outward by the spring P are applied when the abutting member 2b is raised from below with the tip portions 17a and 19a protruding. The contact member 2b contacts the tapered surfaces 17a1 and 19a1, and the lowering restriction stoppers 17 and 19 are pushed inward of the vehicle as the contact member 2b rises. On the other hand, when the abutting member 2b descends from above, the abutting member 2b abuts on the substantially horizontal upper surfaces of the descending restricting stoppers 17 and 19, and thus is further prevented from descending.
In other words, the lowering restriction stoppers 17 and 19 can allow the contact member 2b to rise and restrict the lowering of the contact member 2b with the tip portions 17a and 19a protruding.

  Returning to FIG. 3, the rising restriction stoppers 16 and 18 are connected to the rotating arm 13a via the link bars 16c and 18c, respectively. The pivot arm 13a is fixed to the cover member 13 so as to be pivotable around the shaft portion 13a1, and by rotating the pivot arm 13a, the lifting restriction stoppers 16 and 18 are moved in the vehicle inner direction or the outer direction. Can be moved simultaneously. Further, a link bar 13b for rotating the rotation arm 13a is connected to the rotation arm 13a. The link bar 13b is connected to a release lever 13c (FIG. 1) fixed to the fire truck S via a wire 13f, and the operator operates the release lever 13c to move the rotating arm 13a. It is possible to rotate and move the rising restriction stoppers 16 and 18.

When the release lever 13c is not operated by the operator, the tip portions 16a and 18a of the ascending restriction stoppers 16 and 18 protrude from the outer surfaces 14a and 15a of the first and second base members 14 and 15, respectively. Thus, the ascending of the contact member 2b is restricted. The release lever 13c is urged to a predetermined position when it is not operated by the urging force of the spring that urges the ascending restriction stoppers 16 and 18, and the operator releases it against this urging force. By operating the lever 13c, the rotating arm 13a can be rotated clockwise. As a result, the lifting restricting stoppers 16 and 18 are moved inward of the vehicle, and the tip portions 16a and 18a can be retracted inward from the outer surfaces 14a and 15a, so that the contact member 2b can be raised.
In other words, the release lever 13c, the wire 13f, the link bar 13b, the rotating arm 13a, and the link bars 16c and 18c are moved to the position where the contact member 2b of the load receiving base 2 is brought into contact with the position where the lift restricting stopper 16 is not brought into contact. , 18 is configured to drive the first drive means G1.

  The lowering restriction stoppers 17 and 19 are connected to a rotating arm 12b fixed to the rotary shaft 12a of the rotary solenoid 12 via link rods 17b and 19b, respectively. The rotary arm 12b can be rotated by the rotary solenoid 12, and by operating the rotary solenoid 12, the rotary arm 12b is rotated, and the lowering restriction stoppers 17 and 19 are respectively connected to the inside of the vehicle. Can be moved simultaneously in the direction or outward direction. Further, a wire 12c for manually turning the turning arm 12b is attached to the turning arm 12b. The operator can manually turn the turning arm 12b without operating the rotary solenoid 12 by an operation lever (not shown). Can be moved.

In FIG. 3, tip portions 17a and 19a of the lowering restriction stoppers 17 and 19 protrude from the outer surfaces 14a and 15a of the first and second base members 14 and 15, respectively, and the lowering of the contact member 2b is restricted. is doing. From this state, the rotary solenoid 12 is actuated and the turning arm 12b is turned clockwise to move the lowering restriction stoppers 17 and 19 inward of the vehicle, and the tip portions 17a and 19a are moved to the first and second ends. The base members 14 and 15 can be retracted inside. As a result, the restriction of the lowering restriction stoppers 17 and 19 with respect to the contact member 2b can be released. Further, if the operation of the rotary solenoid 12 is stopped, the rotating arm 12b is moved to its original position (the lowering restriction stoppers 17 and 19 protrude by the biasing force of the spring P biasing the lowering restriction stoppers 17 and 19. Return to position.
That is, the rotary solenoid 12, the rotating arm 12b, and the link rods 17b and 19b are used to drive the lowering restriction stoppers 17 and 19 forward and backward to a position where the contact member 2b of the load receiving base 2 is brought into contact with a position where the contact member 2b is not brought into contact. Two drive means G2 is comprised.

As described above (FIG. 3), the positions of the regulating stoppers 16, 17, 18, 19 in a state in which the tip portion protrudes from the base member and can abut against the abutting member 2b in order to regulate the movement of the abutting member 2b. Is the “contact position”.
FIG. 6 is an enlarged view showing a state in which the ascending restriction stopper 16 is avoided inside the first base member 14. In the drawing, the tip portion 16a is retracted to the inside of the first base member 14, and the restriction on the contact member 2b is released. In this way, the positions of the respective restricting stoppers 16, 17, 18, 19 in the state where the tip portions of the respective restricting stoppers 16, 17, 18, 19 are retracted to the inside of the base member and are not in contact with the contact member 2b. , “Non-contact position”.

  Returning to FIG. 3, a first limit switch 20 for detecting whether or not the lowering restriction stopper 17 is in the contact position is fixed to the bracket 13 d extending from the left side surface of the cover member 13. The first limit switch 20 is set to be turned on when the lowering restriction stopper 17 is located at the contact position. The first limit switch 20 is connected to a first confirmation lamp (not shown) arranged in the driver's seat of the fire truck S, and turns on the first confirmation lamp when the lowering restriction stopper 17 is in the contact position. The fact that the lowering restriction stopper 17 is in the contact position is displayed to the driver of the fire engine S.

  Further, a second limit switch 21 and a third limit switch 22 for detecting whether or not the load receiving platform 2 is located at the loading travel position Z are fixed to the bracket 13e extending from the right side surface of the cover member 13. These second and third limit switches 21 and 22 are set so as to be turned on in a state where the load receiving platform 2 is located at the loading travel position Z. The second limit switch 21 is connected to a control device to be described later for raising and lowering the cargo receiving platform 2. The third limit switch 22 is connected to an operation panel confirmation lamp attached to an operation panel on which operation switches and the like to be described later are arranged, and lights up when the load receiving platform 2 is located at a position other than the loading travel position Z. The operator is informed that the load receiving platform 2 is located at the loading travel position Z.

  A fourth limit switch 23 is fixed to the bracket 4b extending from the lower surface of the frame member 6 to detect whether the load receiving platform 2 is located at the transfer position X. The fourth limit switch 23 is set to be turned on in a state where the cargo receiving platform 2 is located at the transfer position X. The fourth limit switch 23 is connected to a second confirmation lamp (not shown) disposed in the driver's seat of the fire truck S, and the second confirmation lamp is turned on when the receiving platform 2 is located at the transfer position X. And the driver is informed that the cargo receiving platform 2 is located at the transfer position X.

Next, a system configuration for controlling the operation of the hose car lift 1 having the stopper driving device 11 configured as described above will be described with reference to the block diagram of FIG. In the figure, a second limit switch 21 attached to the stopper driving device 11 is connected to the control unit 30 for controlling the raising and lowering of the cargo receiving platform 2, and the output of the second limit switch 21 is the control unit 30. Is input. In addition, an instruction to raise or lower the cargo receiving platform 2 is input to the control unit 30 from an up switch 31, a first down switch 32, and a second down switch 33 operated by an operator. Based on these inputs, the control unit 30 drives a hydraulic pump 35 for extending the hydraulic cylinder 34, and a motor 36 for raising the load receiving table 2, and an electromagnetic for contracting the hydraulic cylinder 34 and lowering the load receiving table 2. Output to the rotary solenoid 12 for moving the valve 37 and the above-described lowering restriction stoppers 17 and 19.
Each of the switches 31 to 33 is a push button type switch. The ON state is maintained while the button is pressed, and the switch is turned OFF when the button is released. Moreover, these switches 31-33 are arranged in the operation panel 40 as shown in FIG. 8, and are arrange | positioned in the position which can be operated, confirming raising / lowering of the cargo receiving stand 2. As shown in FIG. The operation panel 40 is also provided with a power switch 41 for the entire hose car lift 1 and an operation panel confirmation lamp 42 that indicates whether or not the above-described load receiving platform 2 is located at the loading travel position Z.

Next, the operation of the control unit 30 will be described. When the raising switch 31 is turned on, the control unit 30 operates the motor 36 and raises the load receiving platform 2 regardless of the state of the second limit switch 21. When the raising switch 31 is turned off, the control unit 30 stops the motor 36.
Further, when the first lowering switch 32 is turned on when the second limit switch 21 is in the OFF state, the control unit 30 operates the electromagnetic valve 37 0.5 seconds after the lowering switch 32 is turned on. And the cargo receiving platform 2 is lowered. At this time, when the first lowering switch 32 is turned ON, the control unit 30 operates the rotary solenoid 12 to retract the lowering restriction stoppers 17 and 19 from the contact position to the non-contact position.
When the first lowering switch 32 is turned off while the cargo receiving platform 2 is descending, the control unit 30 stops energizing the electromagnetic valve 37 and the descending of the cargo receiving platform 2 is stopped. When the first lowering switch 32 is turned off, the rotary solenoid 12 is also stopped, and the lowering restriction stoppers 17 and 19 advance from the non-contact position to the contact position.
In addition, when the first lowering switch 32 is turned on when the second limit switch 21 is in the ON state, the control unit 30 operates the motor 36 for 0.5 seconds from the time when the first lowering switch 32 is turned on. And raise the receiving platform 2. Further, when the first lowering switch 32 is turned ON, the control unit 30 operates the rotary solenoid 12 to retract the lowering restriction stoppers 17 and 19 from the contact position to the non-contact position. Then, 0.5 seconds after the first lowering switch 32 is turned on, the motor 36 is stopped and at the same time, the electromagnetic valve 37 is operated to lower the load receiving platform 2.
Further, the control unit 30 is set to perform the same operation as that of the first lowering switch 32 described above in response to the operation of the second lowering switch 33.

Next, the operation of the hose car lift 1 when the operator operates the hose car lift 1 will be described.
First, the case where the cargo receiving platform 2 is lowered to the ground from the state where the cargo receiving platform 2 is located at the loading travel position Z will be described. When the operator depresses the first lowering switch 32 in order to lower the load receiving table 2 from this state, the second limit switch 21 is in the ON state. To rise. At this time, the abutting member 2b slightly rises until the upper surface thereof abuts against the rise restricting stoppers 16 and 18. Then, while the load receiving platform 2 is slightly raised, the rotary solenoid 12 is operated, and the lowering restriction stoppers 17 and 19 are retracted from the contact position to the non-contact position.
That is, when the control unit 30 that performs the control as described above lowers the load receiving platform 2 from the loading travel position Z, the control unit 30 slightly raises the position load receiving platform 2 and then brings the lowering restriction stoppers 17 and 19 into contact positions. The lowering control means for retracting from the position to the non-contact position is configured.
Thereafter, the cargo receiving platform 2 is lowered. During this time, the operator first presses the first lowering switch 32 and then continues to press the first lowering switch 32 until the load receiving platform 2 reaches the ground. Then, when the load receiving platform 2 has landed, by stopping the operation of the first lowering switch 32, the lowering of the load receiving platform 2 is stopped and the lowering restriction stoppers 17 and 19 are returned to the contact positions.

  As described above, when the load receiving platform 2 is located at the loading travel position Z, the load receiving platform 2 is slightly lowered due to the leakage of hydraulic oil generated in the hydraulic mechanism such as the hydraulic cylinder 34 and the electromagnetic valve of the lifting device 3. There is a case. When the load receiving platform 2 is slightly lowered in this way, the contact member 2b comes into contact with the lowering restriction stoppers 17 and 19, and the load of the load receiving platform 2 acts on the lowering restriction stoppers 17 and 19, thereby retracting to the non-contact position. It may be difficult to do. However, according to the hose car lift 1 according to the present embodiment, the control unit 30 slightly raises the load receiving platform 2 when lowering the load receiving platform 2 located at the loading travel position Z. The load acting on 17 and 19 can be released. Therefore, the lowering restriction stoppers 17 and 19 can be easily retracted, the restriction can be quickly released, and the lowering of the load receiving platform 2 can be permitted.

Next, the case where it raises to the loading travel position Z from the state in which the cargo receiving stand 2 is landing is demonstrated.
The operator first presses the lift switch 31. As a result, the receiving platform 2 rises. When the load receiving platform 2 rises, the contact member 2b of the load receiving platform 2 comes into contact with the lowering restriction stoppers 17 and 19 at the contact positions. As described above, the lowering restriction stoppers 17 and 19 are pushed inward in the vehicle and allow the contact member 2b to rise, and thus continue to rise. Further, when the abutting member 2b passes the lowering restriction stoppers 17 and 19, the lowering restriction stoppers 17 and 19 biased in the outer direction return to the original contact positions. When the load receiving platform 2 further rises, the contact member 2b comes into contact with the rise restriction stoppers 16 and 18. Since the ascent restriction stoppers 16 and 18 restrict the ascent of the contact member 2b as described above, the load receiving platform 2 cannot be raised any more and stops at the loading travel position Z.

At this stage, the operator releases the operation of the lift switch 31 and stops the lift of the load receiving platform 2. As described above, the operator can raise the load receiving platform 2 to the loading travel position Z.
At this time, the driver of the fire truck S confirms that the lowering of the cargo receiving platform 2 is restricted by the lowering restriction stoppers 17 and 19 by the first confirmation lamp arranged in the driver's seat described above. Therefore, for example, it is possible to prevent the descent restriction stoppers 17 and 19 from running in the non-contact position.

In the state where the load receiving platform 2 is positioned at the loading travel position Z, as described above, the load receiving platform 2 may be slightly lowered due to the leakage of hydraulic oil in the lifting device 3. Even in such a case, in this embodiment, even if the load receiving platform 2 is lowered, the contact receiving member 2b is brought into contact with the lowering restriction stoppers 17 and 19, so that the load receiving platform 2 is lowered downward from the loading travel position Z. Can be prevented.
Further, as described above, the abutting member 2b can be used as a member that abuts both the ascending restriction stoppers 16 and 18 and the descending restriction stoppers 17 and 19, so that the structure can be simplified.

  Next, the case where it raises to the transfer position X from the state in which the cargo receiving stand 2 is landing is demonstrated. First, the operator operates the release lever 13c to retract the ascent restriction stoppers 16 and 18 to the non-contact position. Then, the raising switch 31 is pushed. As a result, the cargo receiving platform 2 rises. The lowering restriction stoppers 17 and 19 allow the abutting member 2b to rise, and the raising restriction stoppers 16 and 18 are located at the non-abutting position, so that the load receiving platform 2 rises to the transfer position X. . At this stage, the operator releases the operation of the lift switch 31 and stops the lift of the load receiving platform 2. As described above, the operator can raise the receiving platform 2 to the transfer position X.

Next, an operation when the cargo receiving platform 2 is raised from the state where it is located at the loading travel position Z to the transfer position X will be described. The operator first presses the second lowering switch 33 to lower the load receiving platform 2. As described above, since the second lowering switch 33 is set to perform the same operation as the first lowering switch 32 when it is turned on, the cargo receiving platform 2 is raised for 0.5 seconds. , The lowering stoppers 17 and 19 are retracted from the contact position to the non-contact position, and then the load receiving platform 2 is lowered.
When the load receiving platform 2 is lowered slightly downward from the loading travel position Z, the operation of the second lowering switch 33 is stopped to stop the lowering of the load receiving platform 2. Thereafter, the release lever 13c is operated to retract the ascent restriction stoppers 16 and 18 to the non-contact position. Thereafter, the raising switch 31 is pushed to raise the cargo receiving platform 2 to the transfer position X.

In this way, by temporarily lowering the load receiving platform 2, it is possible to prevent the ascent restriction stoppers 16 and 18 from coming into contact with the abutting member 2 b and making it difficult to retract the ascent restriction stoppers 16 and 18 to the non-abutting position. The cargo receiving platform 2 can be raised quickly.
In the above case, when the load receiving platform 2 is lowered by operating the second lowering switch 33, the same operation can be performed even if the first lowering switch 32 is operated. However, although the operator is operating to raise the cargo receiving platform 2, the operator presses a switch for lowering, and there is a possibility that the operation is confused.
On the other hand, in the present embodiment, as shown in FIG. 8, the second lowering switch 33 displays, for example, “operation buttons” on the operation panel 40 to the operator. Thereby, the second lowering switch 33 is substantially a switch for lowering the load receiving platform 2, but the operator recognizes it as a switch for the previous stage operation for raising, It is possible to prevent the operation of each switch from being confused.

According to the hose car lift 1 of the present embodiment configured as described above, the load receiving platform 2 that rises from the landing position Y by advancing the ascent restriction stoppers 16 and 18 to the contact position by the first drive means G1. The abutting member 2b can be brought into contact with the ascending restriction stoppers 16 and 18 and accurately stopped at the loading travel position Z. Therefore, while the hose car H is loaded on the load receiving platform 2, the fire truck S can be run without any trouble, the hose car H can be quickly lowered, and a quick fire extinguishing operation can be performed.
Further, when the hose car H is transferred to the loading platform S3 of the fire truck S, the ascending restriction stoppers 16 and 18 are retracted to the non-abutting position by the first driving means G1, thereby bringing the abutting member 2b into the ascending restriction stopper 16, The transfer position X can be raised without being brought into contact with 18.

Note that the hose car lift of the present invention is not limited to the above embodiment. For example, although the load receiving platform 2 of the above embodiment is provided with the contact member 2b with which each restriction stopper comes into contact, the contact member 2b may not be provided by making each restriction stopper directly contact with the load receiving table. .
In the above embodiment, the restriction stoppers are configured to advance and retreat in the vehicle left-right direction. However, the restriction stoppers may be configured to advance and retreat in the vehicle front-rear direction to restrict the lifting of the load receiving table. The raising and lowering of the cargo cradle can also be regulated by providing a regulation stopper attached to the cargo cradle side so as to be freely retractable.

It is a rear part side view of the fire engine equipped with the hose car lift which is one Embodiment of this invention. It is a front view of the hose car lift which is one embodiment of the present invention. In FIG. 1, it is an III-III arrow main part enlarged view. In FIG. 3, it is an IV-IV line arrow directional view. FIG. 5 is a cross-sectional view taken along line VV in FIG. 3. It is an enlarged view which shows the state which the raise control stopper avoided inside the 1st base member. It is a block diagram which shows the system configuration | structure for controlling operation | movement of a hose car lift. It is an external view of the operation panel for operating a hose car lift.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hose car lift 2 Cargo cradle 2b Contact member 3 Elevating device 12 Rotary solenoid 12b Rotating arm 13a Rotating arm 13b Link bar 13c Release lever 13f Wire 16, 18 Elevating restriction stopper 17, 19 Lowering restriction stopper 16c, 18c Link bar 17b 19b Link rod 30 Control part S Fire engine (vehicle)
S3 loading platform H hose car G1 first driving means G2 second driving means X transfer position Y landing position Z loading travel position

Claims (1)

A cradle that is provided at the rear of the loading platform of the vehicle and on which a hose car is loaded;
An elevating device that moves up and down the load receiving table vertically between a transfer position for transferring the hose car to the loading table and a landing position for lowering the hose car to the ground. A hose car lift capable of running the vehicle in a state in which the load receiving table loaded with is stopped at the loading travel position between the transfer position and the landing position,
Provided on the rear end side of the chassis frame of the vehicle so as to be able to advance and retreat between a contact position on the rising locus of the base end portion of the load receiving table and a non-contact position deviating from the rising locus, In a state where the abutment position has been advanced, an ascent restriction stopper that abuts the base end of the ascending load receiving table and stops the load receiving table at the loading travel position;
A first drive means connected to the ascent restriction stopper and driving the ascent restriction stopper back and forth between the contact position and the non-contact position ;
Provided on the rear end side of the chassis frame of the vehicle so as to be capable of advancing and retreating between a contact position on a descending locus of the base end portion of the load receiving table and a non-contact position deviating from the descending locus, A descending restriction stopper for restricting the load receiving table from descending from the loading travel position by contacting the base end portion of the load receiving platform at the loading travel position in the state of advancement to the contact position;
A second drive means coupled to the lowering restriction stopper and driving the lowering restriction stopper to advance and retract to the contact position and the non-contact position;
The second drive means has a rotary solenoid as a power source that drives the lowering restriction stopper to advance and retreat,
A lowering switch for outputting a command to lower the load receiving table from the loading travel position;
A limit switch for detecting that the receiving platform is located at the loading travel position;
When an operation command for the lowering switch is output when the limit switch is in a detection state, the lifting device is slightly raised by the lifting device, and then the lowering restriction stopper is moved to the non-contact position by the rotary solenoid. And a lowering control means for lowering the load receiving table by the lifting device after the retraction.

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