CN111921150B

CN111921150B - Auxiliary traction device and fire-fighting robot system

Info

Publication number: CN111921150B
Application number: CN202010765182.7A
Authority: CN
Inventors: 唐飞; 徐延泷; 罗刚; 李明旭; 陈进
Original assignee: Beijing Lisheng High Tech Technology Co ltd
Current assignee: Beijing Lisheng High Tech Technology Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-11-26
Anticipated expiration: 2040-08-03
Also published as: CN111921150A

Abstract

An auxiliary traction device comprises a node fixer, an elastic limiting stopper and a water belt assembly, wherein the node fixer is distributed on the water belt assembly and generates a plurality of fixing points; the elastic limiting stoppers are arranged between every two node fixing devices and connected with the node fixing devices to elastically limit the shape of the water hose assembly. The auxiliary traction device and the fire-fighting robot system can realize the step-by-step unfolding and moving of the filled long-distance water hose, and greatly reduce the traction force for dragging the long-distance water hose.

Description

Auxiliary traction device and fire-fighting robot system

Technical Field

The invention relates to the technical field of fire-fighting robots, in particular to an auxiliary traction device in a fire-fighting robot system.

Background

In the prior art, in the field of fire fighting, water is generally used as a liquid fire extinguishing medium, and in a state where a fire breaks out at a certain position, a fire hydrant is supplied with a water source at a fixed position, or a fire engine moving to a position near the fire position supplies the water source, and an outlet of a hose is laid to the fire position by laying the hose, and water is conveyed through the hose to extinguish the fire. However, in practical applications, the weight of the water filled hose is large, and the hose is difficult to drag again after the water is laid under the condition that the distance between the water source position and the fire position is long, and the hose is difficult to bend due to the fact that the water filled hose is inside, so that fire extinguishing tools such as water cannons connected with the water filled hose at the front end are difficult to move.

With the improvement of the technology, the fire-fighting robot is more widely applied to actual fire extinguishing, particularly, fire extinguishing operation is carried out on a large-span fire scene, the fire generally has a far water taking position, the fire extinguishing moving range is wide, the depth is large, and the fire needs to be secondarily moved after a water belt is filled with water and continuously extinguished by bypassing barriers in many times.

Mostly be the fire fighter manual work field operation change among the prior art, need carry out switch valve and change a series of work such as hosepipe, complex operation, and in order to prolong the hosepipe, the fire fighter needs to be close to the scene of a fire sometimes and operates. This has very big restriction fire-fighting robot applied convenience and security.

Although some remote control valves can solve the function of closing the liquid path at present, the switching of the water belt comprises the switching of the mechanical connection of the water belt besides the switching of the on-off of the fluid. And in a fire environment, the communication and operation stability of the circuit elements may be greatly reduced.

Chinese patent application No. CN201610872031.5 discloses a laying device and a laying system for a flexible liquid supply pipe, and this application discloses a technical scheme of slowly releasing a follow-up section through an arc-shaped through groove to prolong a water hose, thereby improving the dragging convenience and reducing the dragging power consumption. However, the surface layer of the actual water hose is tensioned due to the internal fluid pressure after the water hose is filled with water, the bending radius is large, the corresponding arc-shaped through groove cannot be small and light, and the transportation and laying difficulty is increased.

Chinese patent application No. CN201910582909.5 discloses a water hose switching and releasing device, which discloses a system for switching and extending a spare water hose through three-way valve switching, and realizes automatic switching and extending of the water hose under the action of traction force, and is not limited by the bending radius, but the structure is relatively complex.

From the above discussion, the difficulty of moving and extending the flexible water hose after filling water and the low stability and convenience of the switching operation in the prior art are technical problems to be solved by those skilled in the art, and in order to popularize and apply in a large area, the corresponding device should be designed toward miniaturization and low cost.

Disclosure of Invention

In order to solve the defects in the prior art, the invention aims to provide an auxiliary traction device and a fire-fighting robot system, which reduce the traction force required by a dragging water belt in the water-filled state of the fire-fighting water belt.

In order to achieve the above object, the present invention provides an auxiliary traction apparatus comprising a node holder, an elastic stopper, and a hose assembly, wherein,

the node fixators are distributed on the water band assembly and generate a plurality of fixing points;

the elastic limiting stoppers are arranged between every two node fixing devices and connected with the node fixing devices to elastically limit the shape of the water hose assembly.

Further, the elastic limiter comprises a length adjusting buckle and an elastic body, wherein,

the length adjusting buckle is used for adjusting the bending degree of the water band assembly and the initial tension of the elastic limiter by changing the length of the elastic body;

the elastomer is used for providing elongation.

Further, the length adjusting buckle is a Chinese character 'ri' buckle or a nylon self-adhesive tape.

Further, the elastic limiter further comprises a tension limiting assembly, and the tension limiting assembly is used for loosening when the elastic limiter is scratched or hooked with an object.

Further, the elastic body is an elastic braid, rubber or a spring structure.

Further, the hose assembly comprises a hose coupling and a hose.

Further, the node fixer is installed on the water hose interface or the water hose.

Further, the node fixtures are arranged at equal intervals on the hose assembly.

Further, the elastic limiter is a structure with a fixed initial length and is used for limiting the bending state of the water band assembly under water filling.

In order to achieve the purpose, the invention further provides a fire-fighting robot system which comprises the auxiliary traction device.

The auxiliary traction device and the fire-fighting robot system have the following beneficial effects:

1) through the installation of the elastic limiting stopper, the step-by-step unfolding and moving of the filled long-distance water hose is realized, and the traction force for dragging the long-distance water hose is greatly reduced.

2) Compared with other existing folding or complete water belt schemes, the water belt disclosed by the invention is simple and light in structure, can be made of rubber and fiber woven materials, can be further folded and stored, and is convenient to transport and deploy.

3) Compared with the technical scheme of valve switching, the technical scheme of the invention has simpler structure and low cost. In addition, because no additional valve is needed, the pipeline resistance is small.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic illustration of a water hose construction using an auxiliary draft gear according to the present invention;

FIG. 2 is a schematic view of an auxiliary draft gear according to the present invention;

FIG. 3 is a schematic view of the process of deployment of the hose under traction according to the present invention;

fig. 4 is a schematic view of a fire fighting robot system equipped with a hose assisted towing device according to the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Fig. 1 is a schematic view showing a hose structure using an auxiliary traction apparatus according to the present invention, and as shown in fig. 1, the auxiliary traction apparatus of the present invention includes a node holder 1, an elastic stopper 2, and a hose assembly 3, wherein,

and the node fixer 1 is distributed on the water band assembly 3 and is fixed with the water band assembly 3.

In this embodiment, the node fixing device 1 generates a plurality of fixing points (the specific number is selected according to the hose length and the length of the elastic limiting device) capable of bearing large tensile force on the existing standard hose, so that the elastic limiting device 2 can be conveniently hung on the fixing points.

And the elastic limiting stoppers 2 are positioned between every two node fixing devices 1 and connected with the node fixing devices 1 to elastically limit the shape of the water hose assembly 3. Between two node fixers 1 hung on a single elastic limiting stopper 2, the water hose assembly 3 keeps large-radius C-shaped bending under the condition of not applying traction force after water filling.

In this embodiment the resilient stopper 2 is mainly used to limit the bending of the hose assembly 3 under water filling and extends out when the external pulling force is sufficiently large to provide elongation of the hose system.

In this embodiment, the elastic limiter 2 may have a fixed length structure.

Fig. 2 is a schematic view of an auxiliary towing means architecture according to the present invention, as shown in fig. 2.

The hose assembly 3 is of a conventional structure and comprises a hose joint 301 and a hose 302, and the node fixer 1 is fixed on the hose 302 and used for providing a connection point between the elastic stopper 2 and the hose assembly 3.

Preferably, the node fixtures 1 are equally spaced on the hose 302 so that the elastic stoppers 2 are of uniform length.

In this embodiment, the node fixer 1 may be directly mounted on the water hose 302 of the existing standard specification, for example, fixed on the water hose 302 by using a sleeve with glue inside, or fixed on the water hose joint 301.

In this embodiment, the node fixture 1 may also be provided directly at the stage of water hose production, for example, a fixing structure may be directly woven on the surface of the water hose 302.

Preferably, the elastic limiter 2 comprises a length adjusting buckle 201 and an elastic body 202, wherein the length adjusting buckle 201 is used for adjusting the effective length of the webbing so as to adjust the bending state of the hose according to actual conditions, and further adjust the bending degree of the hose assembly 3 and the initial tension of the elastic limiter 2.

Preferably, the length-adjusting buckle 201 may be a conventional "ri" buckle, or may be a nylon self-adhesive tape.

In this embodiment, the elastic limiter 2 may include a tension limiting structure, such as a nylon self-adhesive tape and a buckle with tension limitation, so that the elastic limiter 2 may be loosened in time when being scratched or hooked with a fixed object, thereby preventing the water tape and the front-end device from being affected.

Preferably, the elastic body 202 of the elastic limiter 2 may be a structure of an elastic webbing, rubber, spring.

Fig. 3 is a schematic view showing the process of unfolding the water hose under the traction force according to the present invention, and as shown in fig. 3, in this embodiment, the elastic body 202 is an elastic webbing or spring, which is light in weight and easy to store and clean.

In this embodiment, when the hose assembly 3 with the auxiliary traction device is dragged, the hose assembly 3 fixed by the elastic limiter 2 is equivalent to a linear elastic system, and the ground friction generates damping which is approximately uniformly distributed on the hose assembly 3. When the traction end moves, the water hose assembly 3 near the traction end can be straightened under small pulling force, then the pulling force is gradually transmitted to the fixed end, and the water hose assembly 3 on the pulling force transmission route is gradually unfolded.

In this embodiment, through increasing the elasticity stopper for when pulling the hosepipe, instead of dragging whole hosepipe and remove forward, drag a section hosepipe by less traction force, subsequent hosepipe follows up in proper order under the effect of traction force, realizes supplementary effect of pulling.

Fig. 4 is a schematic view of a fire fighting robot system equipped with a hose auxiliary traction device according to the present invention, and as shown in fig. 4, the auxiliary traction device and the fire fighting robot system of the present invention restrict the natural bending form of the hose after filling with water by means of an elastic body so that there is a certain margin of elasticity when both ends are stretched, rather than when one end is stretched in the case of approaching straightening after filling with water, all the connected hoses need to be pulled together to move forward.

When the stretched water band is directly dragged, the water band can move only by overcoming the friction force between all the connected water bands and the ground. After the shape of the water hose is limited by the elastic body, the water hose is pulled open step by step, the first-stage water hose can be pulled and straightened only by overcoming the pulling force of the elastic body and the friction force between the water hose section limited by the elastic body and the ground, and the front end of the water hose can be moved. The initial tension of the elastomer should be greater than the friction of the confined water band segment against the ground so that the water band can bend under the action of the elastomer. The tensile force of the elastic body when the elastic body is pulled to be equal to that of the water hose is generally smaller than that of the designed traction end, so that the water hose can be straightened under the action of the traction force finally, and the length of the water hose is fully utilized.

It should be noted that the traction force at the front end is gradually reduced in the process of transmission because the friction between the hose and the ground is a distributed force, that is, the traction force required for pulling the hose is gradually increased as the traction process is carried out. Eventually will be substantially the same as the pulling force required to pull a conventional hose.

Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary traction device is characterized by comprising a node fixer, an elastic limiter and a water band component, wherein,

a plurality of said node anchors distributed over said hose assembly and creating a plurality of anchor points;

the elastic limiting stoppers are arranged between every two node fixing devices and connected with the node fixing devices, elastically limit the shape of the water hose assembly and limit the bending state of the water hose between every two node fixing devices under water filling;

the elastic limiter comprises a length adjusting buckle and an elastic body, wherein,

the length adjusting buckle is used for adjusting the bending degree of the water hose assembly and the initial tension of the elastic stopper by changing the length of the elastic body;

the elastomer is used for providing elongation.

2. An auxiliary traction device as defined in claim 1, wherein the length adjustment buckle is a hook-and-loop buckle or a nylon self-adhesive tape.

3. The auxiliary traction device as claimed in claim 1, wherein the elastic stopper further comprises a tension limiting component for releasing when the elastic stopper is scratched or hooked with an object.

4. An auxiliary towing attachment according to claim 1, wherein the resilient body is an elastic webbing, rubber or spring structure.

5. Auxiliary pulling device according to claim 1, wherein the hose assembly comprises a hose connection and a hose.

6. Auxiliary pulling device according to claim 5, wherein the node holder is mounted on the water hose coupling or/and the water hose.

7. Auxiliary pulling device according to claim 1, wherein the node holders are arranged equidistantly on the hose assembly.

8. An auxiliary towing attachment according to claim 1, wherein the resilient stop is a fixed initial length structure for limiting the bending of the hose assembly under water filling.

9. A fire fighting robot system, characterized in that it comprises an auxiliary towing device according to any one of claims 1-8.