CN216169524U - Double-folding arm component and fire fighting equipment - Google Patents

Abstract

The utility model provides a double-folding arm assembly and fire fighting equipment. The front folding arm component is rotatably connected to the front end of the supporting mechanism. The rear folding arm component is connected to the rear end of the supporting mechanism in a rotating mode. The front folding arm assembly and the rear folding arm assembly are positioned on two sides of the center line of the supporting mechanism. When multi-point disaster relief work is carried out, the front folding arm component and the rear folding arm component can respectively rotate to proper positions and are unfolded to the required lengths and angles, so that multi-point disaster relief is realized. The front folding arm assembly and the rear folding arm assembly are arranged independently, so that the front folding arm assembly and the rear folding arm assembly are not interfered with each other when disaster relief is carried out, the flexibility of the front folding arm assembly and the rear folding arm assembly is greatly improved, and the moving range of the front folding arm assembly and the rear folding arm assembly is enlarged. Meanwhile, the front folding arm assembly and the rear folding arm assembly are positioned on two sides of the central line of the supporting mechanism, so that the supporting stability of the double-folding assembly can be improved.

Description

Double-folding arm component and fire fighting equipment

Technical Field

The utility model relates to the technical field of fire fighting equipment, in particular to a double-folding arm assembly and fire fighting equipment.

Background

In a fire rescue site, fire extinguishing operation is often required to be performed in the face of multiple fire points. Such as multiple-height fire points for multiple-floor fires or multiple-span fire points for buildings on both sides of a road. Due to the site limitations of buildings, roads and the like, the occupied area of a single fire truck is large, multiple fire trucks cannot operate side by side, and the fire extinguishing efficiency is low. To achieve fire extinguishing with multiple fire points, a double-arm frame structure is generally provided on a fire-fighting truck. The double-arm frame structure used at present mainly comprises double telescopic arms, wherein the lower end of the main telescopic arm is fixed on a fire engine, and the upper end of the main telescopic arm is connected with a first upper telescopic arm and a second upper telescopic arm in parallel. In such a dual telescopic boom structure, the operation of the two upper telescopic booms is affected by the operating state of the main telescopic boom. Meanwhile, the two upper telescopic arms also influence each other, the movement flexibility is poor, the movement range is small, and the action blind area is easy to occur. Or, there are some fire fighting equipment that sets up folding arm separately in the automobile body front and back end among the prior art, and the folding arm of front and back end adopts the form of collineation to connect on the automobile body in this kind of fire fighting equipment usually, and its support stability is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a double-folding arm assembly and fire fighting equipment, which are used for solving the problems of weak independence, poor activity flexibility, small activity range and poor support stability of each arm support in the conventional double-arm support structure.

According to a first aspect of the present invention, a dual folding arm assembly is provided, comprising a front folding arm assembly, a rear folding arm assembly and a support mechanism.

Wherein the front folding arm assembly is pivotally connected to the front end of the support mechanism; the rear folding arm assembly is pivotally connected to the rear end of the support mechanism. And the front folding arm component and the rear folding arm component are positioned on two sides of the central line of the supporting mechanism.

According to the double folding arm assembly provided by the utility model, the front folding arm assembly comprises a front folding arm and a front swing mechanism; the rear folding arm assembly comprises a rear folding arm and a rear swing mechanism.

The front swing mechanism is connected to the front end of the supporting mechanism, and the front folding arm is connected with the front swing mechanism. The rear swing mechanism is connected to the rear end of the supporting mechanism, and the rear folding arm is connected with the rear swing mechanism.

According to the double folding arm assembly provided by the utility model, the supporting mechanism comprises a cross beam, a front end supporting part, a front telescopic supporting leg, a rear end supporting part and a rear telescopic supporting leg.

The front end supporting part is connected to the front end of the cross beam, and the front telescopic supporting legs are connected with the front end supporting part. The rear end supporting part is connected to the rear end of the cross beam, and the rear telescopic supporting legs are connected with the rear end supporting part.

According to the double-folding arm assembly provided by the utility model, the number of the front telescopic supporting legs and the number of the rear telescopic supporting legs are two. Two preceding telescopic leg interval sets up in the downside of front end supporting part. Two back telescopic leg interval set up in the downside of rear end supporting part.

According to the double folding arm assembly provided by the utility model, the front swing mechanism comprises a front central swing body and a front rotary tower. The rear swing mechanism comprises a rear central swing body and a rear rotating tower.

Wherein the front center revolving body is connected to the front end support portion. The front turret is mounted on the front central revolving body. The front folding arm is hinged on the front rotating tower;

wherein the rear center revolving body is connected to the rear end support portion. The rear turret is mounted on the rear central swivel. The rear folding arm is hinged to the rear turret.

According to the double folding arm assembly provided by the utility model, the front turret is connected with the front center revolving body through the revolving gear mechanism, and the front turret can revolve 360 degrees by taking the central axis of the front center revolving body as a revolving central axis.

The rear turret is connected with the rear center revolving body through the revolving gear mechanism, and the rear turret can revolve 360 degrees with the central axis of the rear center revolving body as a revolving central axis.

According to the double-folding arm assembly provided by the utility model, the front folding arm and the rear folding arm respectively comprise a plurality of arm sections, and the arm sections are sequentially hinged and connected. And the front folding arm and the rear folding arm can be folded inwards along the length direction of the cross beam and are accommodated above the cross beam.

According to a second aspect of the present invention there is provided a fire apparatus comprising a chassis and a double folding arm assembly as described above.

Wherein the supporting mechanism is connected to the chassis.

According to the fire fighting equipment provided by the utility model, the fire fighting equipment further comprises a liquid tank and an equipment box. The liquid tank is connected with the chassis.

According to the fire fighting equipment, the front folding arm assembly comprises a front folding arm, and a front arm fire water monitor is mounted at the tail end of the front folding arm. The rear folding arm component comprises a rear folding arm, and a rear arm fire water monitor is installed at the tail end of the rear folding arm. The forearm fire water monitor with the rear arm fire water monitor all through the water route with the fluid reservoir is connected.

In the double folding arm assembly provided by the utility model, the front folding arm assembly is rotatably connected to the front end of the supporting mechanism, and the rear folding arm assembly is rotatably connected to the rear end of the supporting mechanism. And the front folding arm component and the rear folding arm component are positioned on two sides of the central line of the supporting mechanism.

With this arrangement, the front folding arm assembly and the rear folding arm assembly are independently pivotally connected to the front end and the rear end of the support mechanism, respectively. When multi-point disaster relief work is carried out, the front folding arm assembly and the rear folding arm assembly can respectively rotate to proper positions and are unfolded to the required lengths and angles, so that the multi-point disaster relief work is carried out. Therefore, the front folding arm assembly and the rear folding arm assembly in the double-folding arm assembly are arranged independently, and do not interfere with each other during disaster relief work, so that the flexibility of the front folding arm assembly and the rear folding arm assembly is greatly improved, and the moving range of the front folding arm assembly and the rear folding arm assembly is enlarged. Meanwhile, the front folding arm assembly and the rear folding arm assembly are positioned on two sides of the central line of the supporting mechanism, so that the supporting stability of the double-folding assembly can be improved.

Further, in the fire fighting equipment provided by the utility model, since the fire fighting equipment comprises the double folding arm assembly as described above, the fire fighting equipment also has the advantages as described above.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a support mechanism, a front swing mechanism and a rear swing mechanism of a double folding arm assembly provided by the present invention;

FIG. 2 is a schematic structural diagram II of a support mechanism, a front swing mechanism and a rear swing mechanism in a double folding arm assembly provided by the present invention;

FIG. 3 is a first schematic structural diagram of the fire fighting equipment provided by the present invention;

FIG. 4 is a second schematic structural view of the fire fighting equipment provided by the present invention;

FIG. 5 is a schematic diagram III of the structure of the fire fighting equipment provided by the present invention;

FIG. 6 is a fourth schematic structural view of the fire apparatus provided by the present invention;

FIG. 7 is a schematic structural diagram of a fire fighting device provided by the present invention;

reference numerals:

100: a front folding arm assembly; 101: a front folding arm;

102: a front center revolving body; 103: a front turret;

104: a forearm fire water monitor; 200: a rear folding arm assembly;

201: a rear folding arm; 202: a rear center revolving body;

203: a rear turret; 204: a rear arm fire water monitor;

300: a support mechanism; 301: a cross beam;

302: a front end support portion; 303: a front telescoping leg;

304: a rear end support portion; 305: a rear telescopic leg;

400: a liquid tank; 500: an equipment box.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification to make the purpose, technical solution, and advantages of the embodiments of the present invention more clear, and the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are a part of embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A double folding arm assembly and a fire fighting apparatus according to an embodiment of the present invention will be described with reference to fig. 1 to 7. It should be understood that the following description is only exemplary embodiments of the present invention and does not constitute any particular limitation of the present invention.

Embodiments of the first aspect of the present invention provide a double folding arm assembly, as shown in fig. 1 to 7, comprising: a front folding arm assembly 100, a rear folding arm assembly 200, and a support mechanism 300.

Wherein the front folding arm assembly 100 is pivotally connected to the front end of the support mechanism 300; the rear folding arm assembly 200 is pivotally connected to the rear end of the support mechanism 300. And the front folding arm assembly 100 and the rear folding arm assembly 200 are located on either side of the centerline of the support mechanism 300.

With this arrangement, the front folding arm assembly 100 and the rear folding arm assembly 200 are independently pivotally connected to the front and rear ends of the support mechanism 300, respectively. When multi-point disaster relief work is carried out, the front folding arm assembly 100 and the rear folding arm assembly 200 can respectively rotate to proper positions and are unfolded to the required lengths and angles, so that the multi-point disaster relief work is carried out. Therefore, the front folding arm assembly 100 and the rear folding arm assembly 200 in the double-folding arm assembly are arranged independently, and do not interfere with each other when disaster relief work is carried out, so that the flexibility of the front folding arm assembly 100 and the rear folding arm assembly 200 is greatly improved, and the moving range of the front folding arm assembly 100 and the rear folding arm assembly 200 is enlarged. Meanwhile, the front folding arm assembly 100 and the rear folding arm assembly 200 are located at both sides of the center line of the support mechanism 300, and the support stability of the double folding assembly can be improved.

In one embodiment of the present invention, the front folding arm assembly 100 includes a front folding arm 101 and a front swing mechanism. The rear folding arm assembly 200 includes a rear folding arm 201 and a rear swing mechanism.

Wherein the front swing mechanism is connected to the front end of the supporting mechanism 300. The front folding arm 101 is connected to a front swing mechanism. The rear swing mechanism is connected to the rear end of the supporting mechanism 300. The rear folding arm 201 is connected to a rear swing mechanism.

For example, as shown in fig. 1 and 2 (the front folding arm and the rear folding arm are not shown), the front swing mechanism and the rear swing mechanism are respectively installed at two end points on the same diagonal line of the supporting mechanism 300. One end of the front folding arm 101 is connected to a front swing mechanism, which can swing and drive the front folding arm 101 to rotate. One end of the rear folding arm 201 is connected to a rear swing mechanism, which can swing and drive the rear folding arm 201 to rotate. Meanwhile, the front folding arm 101 and the rear folding arm 201 can be respectively and independently unfolded to different heights and different angles to perform multi-point disaster relief work.

According to the above-described embodiments, the front folding arm assembly 100 and the rear folding arm assembly 200 can implement various rescue works such as single-side single-folding arms, double-folding arms on the same side, double-folding arms on different sides, double-folding arms with the same height or different heights, and have high flexibility and versatility. In addition, the front swing mechanism and the rear swing mechanism are respectively installed at both sides of the center line of the support mechanism 300, so that the support stability of the entire double folding arm assembly can be greatly improved.

In one embodiment of the present invention, the support mechanism 300 includes a cross beam 301, a front support 302, a front telescoping leg 303, a rear support 304, and a rear telescoping leg 305.

The front end support 302 is connected to the front end of the cross beam 301. The front telescoping leg 303 is connected to the front support 302. The rear end support portion 304 is connected to the rear end of the cross member 301. The rear telescoping leg 305 is connected to the rear support section 304.

In one embodiment of the present invention, the front folding arm 101 and the rear folding arm 201 each comprise a plurality of arm segments. Each arm section is hinged in sequence, and the front folding arm 101 and the rear folding arm 201 can be folded inwards along the length direction of the cross beam 301 and stored above the cross beam 301.

For example, as shown in fig. 1, a front end support 302 and a rear end support 304 are mounted to the front end and the rear end of the cross member 301, respectively. A front telescopic leg 303 is mounted to the underside of the front end support 302 and a rear telescopic leg 305 is mounted to the underside of the rear end support 304. The front telescoping leg 303 and the rear telescoping leg 305 can be supported on the ground.

The front swing mechanism is mounted on the upper side of the front end support 302, and the rear swing mechanism is mounted on the upper side of the rear end support 304. The lower end arm joint of the front folding arm 101 is connected to the front swing mechanism, and the lower end arm joint of the rear folding arm 201 is connected to the rear swing mechanism. Meanwhile, as shown in fig. 3, the front folding arm 101 and the rear folding arm 201 can be folded inward along the length direction of the cross member 301 to be stored above the cross member 301. When the fire fighting equipment is in a non-working state, the front folding arm 101 and the rear folding arm 201 can be stored above the cross beam 301, so that the fire fighting equipment can be parked and driven conveniently.

It should be noted here that the number of the front telescopic legs 303 and the rear telescopic legs 305 is not limited in any way. For example, in one embodiment of the present invention, the number of front telescoping legs 303 and rear telescoping legs 305 are both two. Two front telescoping legs 303 are provided spaced below the front support 302 and two rear telescoping legs 305 are provided spaced below the rear support 304.

Meanwhile, the present invention is not limited in any way as to the types of the front telescopic legs 303 and the rear telescopic legs 305. For example, in one embodiment of the present invention, the front telescoping leg 303 and the rear telescoping leg 305 may be leg cylinder mechanisms.

In one embodiment of the present invention, the front swing mechanism includes a front center swing body 102 and a front swing tower 103; the rear swing mechanism includes a rear central swing body 202 and a rear turret 203.

The front center revolving unit 102 is connected to the front end support 302. The front turret 103 is mounted on the front central revolving body 102. The front folding arm 101 is hinged on the front turret 103;

the rear center revolving unit 202 is connected to the rear end support unit 304. The rear turret 203 is mounted on the rear central revolving body 202. The rear folding arm 201 is articulated on the rear turret 103.

In one embodiment of the present invention, the front turret 103 and the front center revolving body 102 are connected by a revolving gear mechanism. The front rotary tower 103 can rotate for 360 degrees by taking the central axis of the front central rotary body 102 as a rotary central axis;

the rear turret 203 and the rear center revolving body 202 are connected by a revolving gear mechanism. And the rear turret 203 can rotate 360 ° with the center axis of the rear center rotation body 202 as the rotation center axis.

In the working process, the front rotary tower 103 can rotate 360 degrees by taking the central axis of the front central rotary body 102 as the rotary central axis, and further drives the front folding arm 101 to rotate so as to adjust the working position of the front folding arm 101. The rear turret 203 can rotate 360 ° with the central axis of the rear central rotating body 202 as the rotating central axis, and further drives the rear folding arm 201 to rotate, so as to adjust the working position of the rear folding arm 201. By adjusting the rotation angles of the front turret 103 and the rear turret 203, the working positions of the front folding arm 101 and the rear folding arm 201 can be further adjusted, so that the working flexibility of the double folding arm assembly is improved, and the working range of the double folding arm assembly is expanded.

Embodiments of a second aspect of the utility model provide a fire apparatus comprising a chassis and a double folding arm assembly as described above. Wherein the support mechanism 300 is attached to the chassis.

For example, as shown in fig. 1 to 7, the support mechanism 300 can be connected to the chassis across the length direction of the chassis. Front end support portions 302 and rear end support portions 304 are respectively mounted on the front and rear ends of the cross beam 301. The front folding arm 101 is mounted on the upper side of the front end support 302, and two front telescopic legs 303 are mounted on the lower side of the front end support 302 at intervals. The rear folding arm 201 is attached to the upper side of the rear end support portion 304, and the rear telescopic legs 305 are attached to the lower side of the rear end support portion 304 at intervals. Wherein the front telescopic legs 303 and the rear telescopic legs 305 can be extended through the chassis and supported on the ground. When the fire fighting equipment is in an operating state, the front telescopic legs 303 and the rear telescopic legs 305 can stably support the whole fire fighting equipment on the ground. When the fire fighting equipment is in a non-operating state, the front telescopic legs 303 and the rear telescopic legs 305 can be contracted to a state of being separated from the ground so as to facilitate the running of the fire fighting equipment.

It should be understood herein that the present invention is not limited in any way as to the particular type of fire apparatus. For example, in one embodiment of the utility model, the fire apparatus comprises a fire engine.

In one embodiment of the utility model, the fire apparatus further comprises a liquid tank 400 and an equipment box 500. The liquid tank 400 is connected to the chassis.

Further, in one embodiment of the present invention, the front folding arm assembly 100 includes a front folding arm 101. The end of the front folding arm 101 is provided with a forearm fire monitor 104. The rear folding arm assembly 200 includes a rear folding arm 201. The tail end of the rear folding arm 201 is provided with a rear arm fire water monitor 204. The front arm fire monitor 104 and the rear arm fire monitor 204 are both connected with the liquid tank 400 through a waterway.

The fire fighting equipment has multiple working modes. For example, the fire apparatus is capable of single arm motion, and in the embodiment shown in fig. 4, the front folding arm assembly 100 of the fire apparatus is actuated and the rear folding arm assembly 200 is folded over the tank 400. Alternatively, the rear folding arm assembly 200 of the fire fighting equipment may be actuated, and the front folding arm assembly 100 is folded to be housed above the tank 400.

For example, the fire fighting equipment can also perform double-arm one-sided operation or double-arm both-sided operation. In the embodiment shown in fig. 5, the front folding arm assembly 100 performs disaster relief work on the front side of the fire apparatus and the rear folding arm assembly 200 performs disaster relief work on the rear side of the fire apparatus. In the embodiment shown in fig. 6, both the front folding arm assembly 100 and the rear folding arm assembly 200 perform ipsilateral multi-point disaster relief on the same side of the fire apparatus. In the embodiment illustrated in fig. 7, the front folding arm assembly 100 and the rear folding arm assembly 200 perform multi-point rescue work on both sides of the fire apparatus, respectively.

In operation, the front 303 and rear 305 telescoping legs are first adjusted to level the entire fire apparatus. The front folding arm 101 and the rear folding arm 201 are then unfolded and lifted to the proper position, and are rotated by the front rotary tower 103 and the rear rotary tower 203 to drive the front folding arm 101 and the rear folding arm 201 to rotate. The action postures and the working ranges of the front folding arm 101 and the rear folding arm 201 are adjusted so as not to interfere with each other. Through the fire fighting equipment with the double folding arm assemblies, the multi-point disaster relief requirement of a long distance and a large space can be effectively met.

According to the above-described embodiment, the front folding arm assembly 100 and the rear folding arm assembly 200 are arranged on the support mechanism 300 in a diagonal manner, so that the whole support system is more stable, and the working stability and reliability of the fire fighting equipment are improved. Preceding folding arm 101 and back folding arm 201 are multiarm festival hinge structure, and preceding folding arm 101 and back folding arm 201 can fold and accomodate in fluid reservoir 400 top for whole fire-fighting equipment's structure is compacter. In addition, the fire fighting equipment can realize various operation modes such as single-arm operation, double-arm front-back operation, double-arm same-side operation or double-arm opposite-side operation and the like, and can effectively solve the problem of multi-point disaster relief.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A double folding arm component is characterized by comprising a front folding arm component, a rear folding arm component and a supporting mechanism,

the front folding arm assembly is rotatably connected to the front end of the supporting mechanism, the rear folding arm assembly is rotatably connected to the rear end of the supporting mechanism, and the front folding arm assembly and the rear folding arm assembly are located on two sides of the central line of the supporting mechanism.

2. The double folding arm assembly of claim 1 wherein said front folding arm assembly includes a front folding arm and a front swing mechanism, said rear folding arm assembly includes a rear folding arm and a rear swing mechanism,

the front swing mechanism is connected to the front end of the supporting mechanism, the front folding arm is connected with the front swing mechanism, the rear swing mechanism is connected to the rear end of the supporting mechanism, and the rear folding arm is connected with the rear swing mechanism.

3. The double folding arm assembly of claim 2 wherein said support mechanism includes a cross member, a front end support portion, a front telescoping leg, a rear end support portion and a rear telescoping leg,

the front end supporting part is connected to the front end of the cross beam, the front telescopic supporting legs are connected with the front end supporting part, the rear end supporting part is connected to the rear end of the cross beam, and the rear telescopic supporting legs are connected with the rear end supporting part.

4. The double folding arm assembly of claim 3 wherein said front telescoping legs and said rear telescoping legs are each two in number, two of said front telescoping legs being spaced apart on an underside of said front end support portion and two of said rear telescoping legs being spaced apart on an underside of said rear end support portion.

5. The double folding arm assembly of claim 3 wherein said front swing mechanism comprises a front center swing body and a front turret, said rear swing mechanism comprises a rear center swing body and a rear turret,

the front central revolving body is connected to the front end supporting part, the front turret is mounted on the front central revolving body, and the front folding arm is hinged to the front turret;

the rear central revolving body is connected to the rear end supporting part, the rear turret is mounted on the rear central revolving body, and the rear folding arm is hinged to the rear turret.

6. The double folding arm assembly of claim 5 wherein said front turret is connected to said front central revolving body by a revolving gear mechanism, and said front turret can revolve 360 ° with a central axis of said front central revolving body as a revolving central axis;

the rear turret is connected with the rear center revolving body through the revolving gear mechanism, and the rear turret can revolve 360 degrees with the central axis of the rear center revolving body as a revolving central axis.

7. The double folding arm assembly of claim 3 wherein said front folding arm and said rear folding arm each comprise a plurality of arm segments, each of said arm segments being hingedly connected in series, and each of said front folding arm and said rear folding arm being capable of being folded inwardly along the length of said cross beam to be stowed above said cross beam.

8. A fire fighting apparatus comprising a chassis and a double folding arm assembly as claimed in any one of claims 1 to 7,

wherein the supporting mechanism is connected to the chassis.

9. The fire apparatus of claim 8, further comprising a liquid tank and an equipment tank, the liquid tank being connected to the chassis.

10. The fire apparatus of claim 9, wherein the front folding arm assembly comprises a front folding arm, a front arm fire monitor is mounted at a distal end of the front folding arm, the rear folding arm assembly comprises a rear folding arm, a rear arm fire monitor is mounted at a distal end of the rear folding arm, and the front arm fire monitor and the rear arm fire monitor are both connected with the liquid tank through a waterway.

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