JPH09308702A - Retracting device for fire hose and hose recovery vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the retraction of a hose without any malfunction by clamping the hose between elastically deformable rotors laid as a pair and filled with the air of pressure equal to or higher than the atmospheric pressure, and rotating the hose in a retracting direction for the recovery thereof. SOLUTION: A hose retracting device 104 is secured with a pair of front and rear mounting brackets 171 between a self-travelling vehicle cab and a storage part. A gear box 173 is mounted on both brackets 171, and a first rotor 174 and a second rotor 175 are rotatably held on the gear box 173. Also, each of the rotors 174 and 175 is formed as pneumatic tire type hollow bodies with rubber rollers 174b and 175b laid on the external surface of metallic cylindrical rims 174a and 175a. Furthermore, the both rotors 174 and 175 are filled with the air of pressure equal to or higher than the atmospheric pressure, and made elastically deformable. Then, a hose is clamped between the rubber rollers 174b and 175b of both rotors 174 and 175 and rotated in a retracting direction. As a result, the hose can be smoothly retracted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose retracting device used for collecting fire hoses, and a hose collection vehicle provided with the hose retracting device.

[0002]

2. Description of the Related Art In order to secure fire extinguishing water during fire extinguishing activities, there are cases where rivers, ponds and the like are connected to a water discharge vehicle by a very long hose. As a hose collection vehicle for collecting such hoses after the end of fire fighting, European Patent Publication No. 06
No. 31796A1. The hose recovery vehicle is capable of recovering a hose from the road surface while traveling by itself, and includes a self-propelled vehicle, a hose retracting device provided in the self-propelled vehicle, and a hose retractable by the retracting device. Unit.

[0003] The hose retracting device includes a pair of rollers arranged along the hose retracting direction, and a pressing member for pressing the hose against each roller, and sends the hose sandwiched between each roller and the pressing member in the retracting direction. Each roller is rotationally driven so that it can be operated.

The hose retraction device is provided on the side of a hose storage portion provided behind the driver's cab of the self-propelled vehicle, and the hose on the road surface is introduced into the hose retraction device through the side of the driver's cab. You.

[0005]

The long hose as described above is constructed by connecting a plurality of flexible unit hoses with a metal connecting member. The unit hose is in a flat state because water is not passed at the time of recovery. On the other hand, the connecting tool has a tubular shape having the same inner diameter as that at the time of water collection at the time of collection.

When such a hose is pulled in between the pair of rollers and the pressing member of the hose drawing device, the interval between each roller and the pressing member is determined by the distance between the case where the unit hose in a flat state passes and the connecting member. Will be different from the case of passing. That is, when the unit hose passes between the rollers and the pressing member, the distance between the rollers and the pressing member is narrow and constant. When the connecting tool passes between both rollers and the pressing member from that state, first, the interval between the pressing member and one of the rollers is increased, and the connecting tool passes between the pressing member and the one of the rollers. When the roller is located between the rollers, the distance between the pressing member and one roller is reduced, and then the distance between the pressing member and the other roller is increased. Is completed, the distance between the pressing member and the other roller is reduced.

That is, in the conventional hose retraction device, each of the pair of rollers is in contact with the pressing member.
In the position, the distance between each of the rollers and the pressing member needs to be changed in a certain order according to the position of the connecting member. Therefore, it is disclosed to use a control mechanism having a sensor for detecting the position of the connector and an actuator for operating the pressing member in accordance with the detection signal. In addition, there is also disclosed an apparatus in which the distance between the pair of rollers and the pressing member is changed at two positions in a fixed order using a mechanical mechanism.

However, the use of such a control mechanism increases the cost. Further, since the sensor is used outdoors, the sensor may be affected by weather, dust, and the like, and may malfunction. Also, if a mechanical mechanism is used to change the distance between two positions in a fixed order, the structure becomes complicated and malfunctions are likely to occur.

In the conventional hose drawing device, the pair of rollers is fixed, and only the pressing member is displaced, thereby changing the distance between each roller and the pressing member. Therefore, when the distance between each roller and the pressing member changes, the frictional force between the hose and the pressing member,
The difference between the frictional force between the hose and the roller increases, causing a difference between the retraction speed on the pressing member side and the retraction speed on the roller side, which may cause slipping or twisting and hinder smooth retraction. There is.

It is an object of the present invention to provide a fire hose pull-in device and a hose collection vehicle that can solve the above-mentioned problems.

[0011]

SUMMARY OF THE INVENTION The present invention is directed to a device capable of retracting a fire hose constituted by connecting a plurality of flexible unit hoses with a connecting member, wherein the fire hose is rotatable about an axis. One rotating body and a second rotating body that is rotatable about an axis. Each rotating body is a hollow body that can be elastically deformed at least in an outer peripheral portion, and has an air having a pressure exceeding atmospheric pressure therein. Filled, the outer circumferences of both rotating bodies are arranged to be pressed against each other so that the hose can be sandwiched by the outer circumferences of both rotating bodies, and the hose sandwiched by the outer circumferences of both rotating bodies can be sent in the drawing direction. As described above, at least one of the rotating bodies can be driven to rotate.

According to the hose retracting device of the present invention, the hose sandwiched between the outer periphery of the first rotating body and the outer periphery of the second rotating body can be sent in the retracting direction by rotating at least one of the rotating bodies. it can. Since both the rotating bodies are hollow bodies, at least the outer periphery is elastically deformable and the inside is filled with air having a pressure exceeding atmospheric pressure, so that the outer periphery is elastically deformed along the shape of the sandwiched hose, and ,
A uniform force according to the internal pressure can be applied to the hose. This allows the hose to be fed in the drawing direction without changing the center-to-center distance between the two rotating bodies when the unit hose passes between the two rotating bodies and when the connecting tool passes. It does not require a complicated configuration for changing. In addition, since a uniform force can be applied to the hose, it is possible to prevent a difference between the frictional force between the hose and the one rotating body and the frictional force between the hose and the other rotating body. . Thus, it is possible to prevent a difference between the drawing speed on the one rotating body side and the drawing speed on the other rotating body side, and to reliably draw the hose.

[0013] The hose recovery vehicle of the present invention is a self-propelled vehicle, the hose retracting device of the present invention provided on the self-propelled vehicle, a guide member for guiding a hose on a road surface to the retracting device, and the retracting device. And a storage portion for a hose drawn in by the device, wherein the hose can be collected from the road surface while traveling by itself.

According to the hose recovery vehicle of the present invention, the hose can be recovered from the road surface while traveling by itself, and at this time, the hose can be guided to the retracting device of the present invention by the guide member. The hose drawn by the drawing device can be stored in the storage section.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

A hose recovery vehicle 101 shown in FIG. 1 is capable of recovering a fire hose 102 from a road surface while traveling by itself, and comprises a vehicle 103 and a hose retracting device provided in the vehicle 103. 104 and the hose 10 on the road surface
2 for guiding the guide 2 to the retraction device 104
5 and a storage portion 106 for the hose 102 to be drawn in by the drawing device 104.

The hose 102 is constructed by connecting a plurality of flexible unit hoses 102a with a metal connecting member 102b. Its unit hose 1
02a is in a flat state because water is not passed at the time of recovery. On the other hand, the connecting member 102b has a cylindrical shape having the same inner diameter as that at the time of water collection at the time of collection.

The self-propelled vehicle 103 includes front and rear wheels 110, 1
11 has a driver's cab 113 provided at the front of a vehicle body 112 supported by the driver's body 11.
06.

The hose retracting device 104 includes a storage 1 provided between the operator's cab 113 and the storage 106.
Above 15, the hose 102 fixed to the self-propelled vehicle 103 and introduced from the front side via the guide member 105 as described later is drawn in and sent out to the rear storage section 106. In addition, the hose 10 sent out to the storage unit 106
2 may be manually folded in the storage unit 106.

The guide member 105 is connected to the cab 11
The first part 105a along the front-rear direction arranged above the first part 105a
And a second portion 105b disposed in front of the operator's cab 113 along the up-down direction, and a third portion 105c connecting the two portions 105a and 105b. Thereby, one end 105 ′ of the guide member 105 is disposed forward of the cab 113 in the traveling direction, and the other end 105 ″ is connected to the one end 1.
05 ′ is disposed rearward in the traveling direction. By disposing the hose retraction device 104 behind the other end 105 "of the guide member 105, the hose 102 is introduced into the hose retraction device 104 from the other end 105" side.

As shown in FIG. 2, its guide member 105.
Can be divided from each other.

As shown in FIG. 2 to FIG.
The first portion 105a of 05 includes a frame 120a and the guide plate 12 attached to the frame 120a.
1a. The frame 120a includes the left and right side portions 1
24a, 125a and the left and right side portions 124a, 125a
And a plurality of connecting portions 126a for connecting. The guide plate 121a has left and right sides 124a, 125
a are arranged such that the upper surface is horizontal.

As shown in FIGS. 2 to 5, the second portion 105b of the guide member 105 is mainly constituted by a frame 120b. The frame 120b includes the left and right sides 1
24b, 125b and the left and right side portions 124b, 125b
Connecting portions 126b connecting the left and right side portions 12b
Brackets 127a and 127b at the lower ends of 4b and 125b
And

The third portion 105c of the guide member 105
Includes a frame 120c, a plurality of support rollers 121c attached to the frame 120c, and a pair of guide rollers 122a on the introduction side. The frame 120c includes left and right side portions 124c and 125c and a plurality of connecting portions 12 connecting the left and right side portions 124c and 125c.
6c. Each of the support rollers 121c is rotatably supported around the left and right axes between the left and right side portions 124c and 125c, and is arranged in parallel so as to go rearward as going upward. A pair of guide rollers 122a on the introduction side
Are rotatably supported at the front ends of the left and right side portions 124c, 125c about the vertical axis.

The frame 120c of the third part 105c
The rear part is the guide plate 121a of the first part 105a.
Is placed in front of the The first portion 105a and the third portion 105c are separably connected via a first connection mechanism 131.

As shown in FIGS. 7 (1) and 7 (2), the first connecting mechanism 131 includes a left and right
Lever 131b swingably attached to center 1a
A ring 131d attached to the lever 131b so as to be swingable about the left and right shafts 131c;
5c. Due to the swing of the lever 131b, the ring 131d is hooked on the hook 131e, and the hook 131e
The connection is switched to the disconnection state where the connection is released.

As shown in FIGS. 2 and 5, the second portion 1
A support rod 139 is attached so as to connect the left and right side portions 124b and 125b of the support rod 05b, and a support rod receiver 138 is attached to a lower portion of the third portion 105c.
39 supports the third portion 105c via the support rod receiver 138.

The second portion 105b and the third portion 105c thereof
And are connected to be separable via the second connection mechanism 132.

The second connecting mechanism 132 includes a fixing member 133 attached to each upper end of the left and right side portions 124b and 125b of the second portion 105b, and an outer side from the left and right side portions 124c and 125c of the third portion 105c. And a lock rod 134 protruding in the left-right direction axial center.

As shown in FIG. 7 (3), the fixture 1
33 is a fixed block 133a having an opening 133a '.
And a movable block with lever 133b that is swingably attached to the fixed block 133a. The lock rod 134 can be inserted through the cutout of the opening 133a ', and the movable block 133b allows the opening 133 to be inserted.
The notch of a 'can be opened and closed. By swinging the movable block with lever 133b, the connection state in which the notch of the opening 133a 'is closed to hold the lock rod 134 is switched to the connection state in which the opening is opened to release the holding of the lock rod 134. To be

The guide member 105 is connected to the vehicle 1
The vehicle is mounted on the self-propelled vehicle 103 via the first support mechanism 141 and the second support mechanism 142 so as to be attachable to and detachable from the left and right sides of the vehicle.

As shown in FIGS. 3 and 4, the first support mechanism 141 includes a pair of left and right support members 141a and 141b fixed to the upper part of the storage 115, and both support members 141a and 141b.
1a, a support plate 141c fixed to 141b,
A third connection mechanism 143 attached to each of the support members 141a and 141b.

The rear end of the first portion 105a of the guide member 105 is placed on the upper surface of the support plate 141c.
The two support members 141a, 141b and the first portion 105a
Are connected via the third connection mechanism 143 in a separable manner.

As shown in FIG. 7 (4), the third connecting mechanism 143 includes a cylindrical member 143a having an axial center in the left-right direction fixed to the supporting members 141a and 141b, and a cylindrical member 143a.
43a, which has an L-shaped lock rod 143b inserted axially movably into the outer surface 43a of the tubular member 143a.
3a 'is inclined with respect to the axial direction. The lock rod 143
b, the left and right side portions 124a, 12a of the first portion 105a.
It can be positioned at a connection position where it is inserted into the lock hole 143c formed in 5a, and at a connection release position where it comes out of the lock hole 143c. That is, the elasticity of the spring (not shown) built into the cylindrical member 143a urges the lock rod 143b in the direction of insertion into the lock hole 143c, and opposes the elasticity of the spring.
By hooking 3b on the outer end of the tubular member 143a, it can be positioned at the connection release position as shown.

As shown in FIGS. 3 to 5, the second support mechanism 142 includes a pair of left and right support members 142a and 142b fixed to the upper surface of the front bumper 108 of the vehicle 103.
And a fourth connection mechanism 152 and a fifth connection mechanism 163.

As shown in FIG. 5, the fourth connecting mechanism 15
2 is a fixture 153 attached to each support member 142a, 142b, and a bracket 127 of the second portion 105b.
a and a lock rod 154 attached to the right and left axes and having a left-right axis. The fixture 153 is shown in (3) of FIG.
As shown in FIG. 7, the movable block 153 includes a fixed block 153a having an opening 153a 'having the same configuration as the second connection mechanism 132, and a movable block 153b with a lever. The lock rod 154 can be inserted through the notch in the opening 153a ', and the notch in the opening 153a' can be opened and closed by the movable block 153b. By swinging the movable block 153b with the lever, the connection state in which the notch of the opening 153a 'is closed to hold the lock rod 154 is switched to the connection state in which the opening is opened to release the holding of the lock rod 154. To be

As shown in FIG. 7 (4), the fifth connecting mechanism 163 includes a pair of left and right cylindrical members 163a having a left-right axial center and a lock rod 163b, which has the same structure as the third connecting mechanism 143. And the outer end surface 16 of the tubular member 163a.
3a 'is inclined with respect to the axial direction. The cylindrical member 163
a is fixed to the support members 142a and 142b. The lock rod 163b is connected to the bracket 12 of the second portion 105b.
It can be positioned at a connection position where it is inserted into the lock hole 163c formed at 7a and 127b, and at a connection release position where it comes out of the lock hole 163c. That is, the lock rod 163b is locked in the lock hole 1 by the elasticity of a spring (not shown) built in the cylindrical member 163a.
The lock rod 163b is urged in the direction of insertion into the cylindrical member 163a and hooked on the outer end of the cylindrical member 163a against the elasticity of the spring, thereby positioning the lock rod 163b at the connection release position as shown in the figure.

FIG. 6A shows a state in which the guide member 105 is removed from the vehicle 103. In order to attach the guide member 105 to the self-propelled vehicle 103 from this state, first, as shown in FIG. 6 (2), the rear end of the first portion 105a is attached to the self-propelled vehicle 103 by the third support mechanism 141 of the first support mechanism 141. The connection is made via the connection mechanism 143. The lower end of the second portion 105b is connected to the vehicle 103 via the fourth connection mechanism 152 of the second support mechanism 142. The fourth coupling mechanism 15
2 that is connected to the vehicle 103 via the second part 105
b can swing with respect to the self-propelled vehicle 103 about the center of the left and right axes of the lock rod 154. Next, as shown in (3) of FIG. 6, the third portion 105c is attached to the upper end of the second portion 105b.
Are connected via the second connection mechanism 132. Next, the second portion 105b and the third portion 105c are swung about the left-right axis of the lock rod 154 with respect to the self-propelled vehicle 103, and the third portion 105c is displaced to a connection position with the first portion 105a. Thereafter, the first portion 105a and the third portion 105c
And the second portion 105b and the self-propelled vehicle 103 are connected to each other via the first support mechanism 142.
The mounting of the guide member 105 is completed by the connection via the fifth connection mechanism 163. Removal of the guide member 105 from the self-propelled vehicle 103 is performed in a procedure reverse to the procedure at the time of attachment. First part 105a, second part 1 of guide member 105 removed from self-propelled vehicle 103
05b and the third portion 105c can be stored in the storage case 115.

As shown in FIGS. 8 and 9, the hose retraction device 104 is fixed to the vehicle 103 via a pair of front and rear mounting brackets 171. A gear box 173 is fixed to both brackets 171, and the first rotator 174 and the second rotator 17 are fixed by the gear box 173.
5 and 5 are rotatably supported about the horizontal axis. The rotation axis of the first rotation body 174 and the rotation axis of the second rotation body 175 are parallel to each other, and are vertically arranged in parallel.

Each of the rotating bodies 174 and 175 has a metal cylindrical rim 174a and 175a and the rims 174a and 175a.
a roller 174b, 175 attached to the outer circumference of
b) is a pneumatic tire-like hollow body having As a result, the outer peripheral portion can be elastically deformed. Further, the inside of each of the rotating bodies 174 and 175 is filled with air having a pressure exceeding atmospheric pressure.
/ Cm ² .

The hoses 102 are sandwiched between the outer circumferences of the rotors 174 and 175 so that the hoses 102 can be sandwiched therebetween.
4, 175 are arranged so that the outer circumferences are pressed against each other.

The gear box 173 has a hydraulic motor 18
0 is attached. The hydraulic motor 180 is rotationally driven by supplying hydraulic oil sent from a pump driven by the engine of the self-propelled vehicle 103 by a known hydraulic circuit, and changes the flow direction of the supplied hydraulic oil. By providing a control valve that can be switched, the rotation direction can be switched between forward and reverse, and the rotation speed can be changed by adjusting the pressure oil supply flow rate. The rotation of the hydraulic motor 180 can be transmitted to both rotating bodies 174 and 175 via a reduction gear mechanism (not shown) built in the gear box 173. By transmitting the rotation, the second rotator 175 and the first rotator 174 can be driven in normal and reverse rotations at the same rotation speed in directions opposite to each other. Thereby, both rotating bodies 1
The hose 102 sandwiched between the outer circumferences of the hoses 74 and 175 can be sent in the drawing direction to the storage section 106 and the sending direction from the storage section 106.

The hose 10 is used by the hose collection vehicle 101.
In order to collect the hose 2, one end of the hose 102 is connected to the rotating body 174 of the retracting device 104 via the guide member 105.
175, and then both rotating bodies 17
4 and 175 are driven to rotate in the retraction direction and the hose 1
The self-propelled vehicle 103 may be self-propelled along 02.

According to the above configuration, the hose 102 can be collected from the road surface while traveling by itself, and the hose 102 is pulled by the guide member 105 at this time.
, And the hose 102 drawn by the drawing device 104 can be stored in the storage portion 106.
When the hose 102 is collected, the hose 10 on the road surface
2 is introduced into the retraction device 104 from the front of the cab 113 through the guide member 105, so that the hose is introduced into the retraction device through the side of the cab.
The driver can check the hose 102 on the road surface, the steering along the curve of the hose 102 on the road surface becomes easy, and the smooth introduction into the retraction device 104 can be achieved. In addition, since the guide member 105 is disposed on the left and right sides of the left and right sides of the self-propelled vehicle 103, interference between the guide member 105 and surrounding obstacles is prevented.
Since the guide member 105 is detachable from the self-propelled vehicle 103, the guide member 105 is removed when the hose 102 is not collected, so that the front view from the driver's cab 113 is blocked by the guide member 105. Can be prevented. The guide member 105 removed from the self-propelled vehicle 103 includes first, second, and third portions 105.
Since it is divided into a, 105b, and 105c, it can be stored in the storage 115 without being bulky, so that the guide member 105 can be carried by the self-propelled vehicle 103 itself. Further, by merely swinging the lower end of the second portion 105b of the guide member 105 about the left-right axis with respect to the vehicle 103, the upper end of the second portion 105b is moved to the third portion 10b.
Via 5c, it can be displaced between the connection position with the first portion 105a and the connection release position. This allows
The work of attaching and detaching the guide member 105 to and from the self-propelled vehicle 103 can be facilitated.

According to the pull-in device 104,
The hose 102 sandwiched between the outer periphery of the first rotator 174 and the outer periphery of the second rotator 175 can be sent in the pull-in direction by rotating the two rotators 174 and 175.
The two rotating bodies 174 and 175 are hollow bodies, the outer periphery of which is elastically deformable, and the inside of which is filled with air having a pressure exceeding atmospheric pressure, so that the outer periphery is elastic along the shape of the sandwiched hose 102. The hose 102 is deformed, and a uniform force corresponding to the internal pressure can be applied to the hose 102. As a result, as shown in FIG.
When the unit hose 102a passes between the positions 75 and 75, FIG.
As shown in (2), when the connecting tool 102b passes, the distance between the centers of the two rotating bodies 174 and 175 is not changed, and the two rotating bodies 174 and 175 are moved in the directions of arrows A and B in the drawing. By rotating the hose 102, the hose 102 can be sent in the retraction direction as shown by the arrow C in the figure, and a complicated configuration for changing the interval is not required. Further, a uniform force can be applied to the hose 102 by the internal pressure acting as shown by the arrow D in the drawing.
It is possible to prevent a difference between the frictional force between the first rotating body 174 and the frictional force between the hose 102 and the second rotating body 175. Accordingly, it is possible to prevent a difference between the drawing speed on the first rotating body 174 side and the drawing speed on the second rotating body 175 side, and to reliably draw the hose 102. Also, in the above embodiment, the hose 1
02 is overstretched, the rotating members 174 and 175 are driven to rotate in a direction opposite to the direction in which the hose 102 was collected, and the hose 10 is rotated.
2 can be sent out from the storage section 106, so that an excessive load is prevented from acting on the drawing-in device 104, and the hose 102 can be collected in an appropriate tension state.

The present invention is not limited to the above embodiment. For example, the connecting means of each part of the guide member is not particularly limited, and only the part disposed in front of the driver's cab may be made detachable from the self-propelled vehicle. Further, the guide member portion may be stored in an exposed state on the self-propelled vehicle.

[0047]

According to the present invention, the hose can be reliably drawn in with a simple structure at low cost.

[Brief description of drawings]

FIG. 1 is a side view of a hose collection vehicle according to an embodiment of the present invention.

FIG. 2 is a side view of a guide member according to the embodiment of the present invention.

FIG. 3 is a side view of a main part of the hose collection vehicle according to the embodiment of the present invention.

FIG. 4 is a plan view of a main part of the hose collection vehicle according to the embodiment of the present invention.

FIG. 5 is a front view of a main part of the hose collection vehicle according to the embodiment of the present invention.

6A and 6B are views showing a state before mounting, and FIGS. 6B and 6C are views showing a state in the middle of mounting of the guide member according to the embodiment of the present invention.

FIGS. 7A and 7B are side views of the first connection mechanism, FIG. 7B is a bottom view of the first connection mechanism, and FIG.
Perspective view of the fourth connection mechanism, (4) is a side view of the third and fifth connection mechanisms.

FIG. 8 is a front view of the hose retractor according to the embodiment of the present invention.

FIG. 9 is a side view of the hose retracting device according to the embodiment of the present invention.

FIG. 10 is an explanatory view of an operation of the hose retraction device according to the embodiment of the present invention in a unit hose retraction state;
(2) is an explanatory view of the operation in the state where the coupling tool is retracted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 Hose collection vehicle 102 Hose 103 Self-propelled vehicle 104 Hose retraction device 105 Guide member 106 Storage unit 113 Operator cab

Claims (2)

[Claims] 1. A device capable of pulling in a fire hose constituted by connecting a plurality of flexible unit hoses with a connector, comprising: a first rotating body rotatable around an axis; A rotatable second rotator at the center, wherein each rotator is a hollow body having at least an outer peripheral portion elastically deformable, and is filled with air having a pressure exceeding atmospheric pressure. The outer circumferences of the two rotating bodies are arranged so as to be pressed against each other so that the hose can be sandwiched by the outer circumferences of at least one of the rotating bodies. The rotating body is a retractable fire hose pull-in device that can be driven to rotate. 2. A self-propelled vehicle, a hose retracting device according to claim 1 provided on the self-propelled vehicle, a guide member for guiding a hose on a road surface to the retracting device, and retracted by the retracting device. A hose collection vehicle equipped with a hose storage section and capable of collecting hoses from the road surface while traveling on its own.