CN210096746U

CN210096746U - Fire engine

Info

Publication number: CN210096746U
Application number: CN201920838689.3U
Authority: CN
Inventors: 陈添明; 赵雄; 李先梦
Original assignee: Hunan Sany Intelligent Control Equipment Co Ltd
Current assignee: Hunan Sany Intelligent Control Equipment Co Ltd; Sany Automobile Manufacturing Co Ltd
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-02-21
Anticipated expiration: 2029-06-05

Abstract

The utility model provides a fire engine, fire engine includes: the chassis, one end of the chassis has driver's cab; the rotating seat is arranged on the chassis; cantilever crane mechanism, cantilever crane mechanism includes: one end of the first folding arm is hinged with the rotary seat; one end of the second folding arm is hinged with the other end of the first folding arm; the fixed end of the telescopic arm is hinged with the other end of the second folding arm; the driving mechanism is connected with the arm support mechanism to drive the arm support mechanism to unfold or retract; when the arm support mechanism is in a retracting state, the second folding arm is located above the first folding arm, and the telescopic arm is located on the side of the second folding arm. The arm support mechanism is arranged to be the Z-shaped unfolding arm support mechanism, so that the problem of mutual interference when the first folding arm, the second folding arm and the telescopic arm are unfolded simultaneously is solved.

Description

Fire engine

Technical Field

The utility model relates to a fire-fighting equipment technical field particularly, relates to a fire engine.

Background

The existing elevating jet fire truck basically comprises two arm supports, one is a traditional telescopic and telescopic structure, and the amplitude of the arm support is changed by adopting an oil cylinder link mechanism between two groups of telescopic arms. But the working amplitude is small, the arm support is only provided with one folding joint, the action is not flexible, and the high-precision operation in a complex environment is difficult to realize. In addition, the fully-folded arm support elevating jet fire truck developed in recent years has the technical problems that the multi-section folded arm support performs amplitude variation motion through a link mechanism, the arm support is complex in structure, operation difficulty is high during operation of the fire truck, and the arm support is long in unfolding time.

In addition, in the existing elevating jet fire truck, a plurality of sub-booms in the boom mechanism are unfolded towards the same direction, and each stage of boom can execute rotation after waiting for the rotation of the previous stage of boom by a certain angle in the unfolding process, so that a large amount of time is wasted, and the technical problem of low fire fighting efficiency is caused. Meanwhile, in the existing elevating jet fire truck, the boom mechanism extends out of the tail part of the fire truck, and when fire fighting operation is executed, a user needs to transfer the direction of the fire truck or integrally rotate the boom mechanism to execute the fire fighting operation on a fire source in a specified direction, so that the technical problems of overlong preparation time and low efficiency are caused.

Therefore, how to design an arm support assembly with large working range, simple structure and short deployment time becomes a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a fire engine.

In view of this, the utility model provides a fire engine, fire engine includes: the chassis, one end of the chassis has driver's cab; the rotating seat is arranged on the chassis; cantilever crane mechanism, cantilever crane mechanism includes: one end of the first folding arm is hinged with the rotary seat; one end of the second folding arm is hinged with the other end of the first folding arm; the fixed end of the telescopic arm is hinged with the other end of the second folding arm; the driving mechanism is connected with the arm support mechanism to drive the arm support mechanism to unfold or retract; when the arm support mechanism is in a retracting state, the second folding arm is positioned right above the first folding arm, and the telescopic arm is positioned on the side of the second folding arm.

According to the utility model provides a cantilever crane mechanism, the chassis is the main part bearing structure of fire engine for bear and support other structures on the fire engine, one of chassis serves and is provided with the driver's cabin, and the user can accomplish controlling of fire engine in the driver's cabin. The rotary seat is a base structure of the arm support mechanism, and the arm support mechanism is connected with engineering equipment such as a fire truck and the like through the rotary seat so as to drive the arm support mechanism to rotate together with the rotary seat. The arm support mechanism consists of three parts: the first part is a first folding arm, the first end of the first folding arm is hinged with the rotating seat, and the first folding arm rotates relative to the rotating seat in the working process; the second part is a second folding arm, the first end of the second folding arm is hinged with the second end of the first folding arm, and the second folding arm rotates relative to the first folding arm in the working process; the third part is a telescopic arm, the telescopic arm is an arm support with adjustable length, the fixed end of the telescopic arm is hinged with the second end of the second folding arm, and the telescopic arm rotates relative to the second end of the first folding arm in the working process and extends or shortens on the basis. The driving mechanism is a power structure of the arm support mechanism and is used for providing power to the arm support mechanism so as to realize rotation of the arm support mechanism.

By arranging the first folding arm and the second folding arm, after the arm support mechanism is rotated and turned over through the first folding arm, the working angle of the arm support mechanism is further adjusted through the second folding arm, so that the flexibility of the arm support mechanism is enhanced, and the arm support mechanism can cross over obstacles in front through the first folding arm and the second folding arm. Through setting up flexible arm, increased the work coverage of cantilever crane mechanism by a wide margin to, flexible arm shared space under the recovery state is less, can reduce the shared space of cantilever crane mechanism, and flexible arm is opened fastly in addition, is favorable to carrying out the fire control fast and puts out a fire. Therefore, the technical effects of optimizing the structure of the arm support mechanism, improving the flexibility of the arm support mechanism and improving the working accuracy and reliability of products are achieved.

On this basis, the utility model discloses still specifically inject the spatial position of cantilever crane mechanism. Specifically, when the arm support mechanism is in a retracting state, the second folding arm is located right above the first folding arm, and the telescopic arm is located on the side of the second folding arm. By limiting the spatial position relation, the first folding arm rotates towards the front of the fire engine relative to the rotary seat, the second folding arm rotates towards the rear of the fire engine relative to the first folding arm, and the telescopic arm rotates towards the front of the fire engine relative to the second folding arm in the unfolding process of the arm support mechanism, so that the Z-shaped unfolded arm support mechanism is formed. The arm support mechanism is arranged to be the Z-shaped unfolded arm support mechanism, so that the first folding arm, the second folding arm and the telescopic arm on the arm support mechanism can start to rotate simultaneously, the problem of mutual interference when the first folding arm, the second folding arm and the telescopic arm are unfolded simultaneously is avoided, and the unfolding time of the arm support mechanism is shortened. Meanwhile, the front end of the cantilever crane mechanism unfolded in a Z shape extends out of the front of the cab, so that the fire fighting truck can extend out of the cantilever crane mechanism at the first time after driving to a fire source and execute fire fighting operation, and the working procedures of turning a truck head and rotating a swivel base are omitted, so that the preparation time of the cantilever crane mechanism is further shortened, the cantilever crane mechanism is optimized, the unfolding time of the cantilever crane mechanism is shortened, the working efficiency of the fire fighting truck is improved, and the technical effect of product reliability is improved.

Specifically, in the existing elevating jet fire truck, a plurality of sub-booms in the boom mechanism are unfolded towards the same direction, and each stage of boom can execute rotation after waiting for the rotation of the previous stage of boom by a certain angle in the unfolding process, so that a large amount of time is wasted, and the technical problem of low fire fighting efficiency is caused. Meanwhile, in the existing elevating jet fire truck, the boom mechanism extends out of the tail part of the fire truck, and when fire fighting operation is performed, a user needs to transfer the direction of the fire truck or integrally rotate the boom mechanism to perform the fire fighting operation on a fire source in front of a cab, so that the technical problems of overlong preparation time and low efficiency are caused. To the technical problem, the utility model discloses a set up cantilever crane mechanism into the zigzag and expand, make first folding arm, second folding arm and flexible arm can rotate simultaneously the very first time to solved the inside mutual interference of cantilever crane mechanism, expanded time long technical problem. And, the utility model discloses a set up zigzag cantilever crane mechanism front end and stretch out from driver's cabin the place ahead, make the user can carry out the fire control operation under the condition of not changing locomotive direction and whole rotating cantilever crane mechanism to the long technical problem of cantilever crane mechanism preparation time has been solved.

Additionally, the utility model provides an above-mentioned technical scheme's fire engine can also have following additional technical characteristic:

in the above technical solution, preferably, when the boom mechanism is in the retracted state, a part of the telescopic boom is located right above the cab, and the telescopic boom and the second folding boom are located on the same horizontal plane.

In this technical scheme, further inject is made the position of the cantilever crane mechanism under the state of withdrawing, when cantilever crane mechanism is in the state of withdrawing, flexible arm wholly is located the driver's cabin top, and partly flexible arm is located the driver's cabin directly over, flexible arm is located same horizontal plane with the folding arm of second, thereby make flexible arm shift to the driver's cabin top in length direction's space demand part, with the holistic length demand of reduction fire engine, make the fire engine of equal length can hold the longer flexible arm of length, and then realize optimizing cantilever crane mechanism, promote fire engine compactness, promote the technological effect of fire engine practicality.

In any of the above technical solutions, preferably, the fire engine further includes: the side mechanism comprises two connecting ends which are hinged relatively, one connecting end is connected with the second folding arm, and the other connecting end is connected with the telescopic arm.

In the technical scheme, a method for laterally arranging a telescopic arm is provided: the arm support mechanism is also internally provided with a side mechanism, wherein the side mechanism comprises two connecting ends which are hinged oppositely, the two connecting ends are arranged in a staggered mode in the transverse direction or the longitudinal direction, one connecting end is connected with the second folding arm, and the other connecting end is connected with the telescopic arm. Specifically, the side mechanism comprises a first arm head and a second arm head which are connected in a rotating mode and arranged laterally, wherein the first arm head is connected with the second folding arm, and the second arm head is connected with the telescopic arm. In the working process, the first arm head and the second arm head can rotate relatively, so that the second folding arm and the telescopic arm can be laterally arranged on the same plane, the lateral space of the arm support mechanism is effectively utilized, the space requirement of the length direction of the arm support mechanism in a withdrawing state is reduced, the structure of the arm support mechanism is optimized, the structural compactness of the arm support mechanism is improved, the space requirement of the arm support mechanism is reduced, and the technical effect of product practicability is improved.

In any of the above technical solutions, preferably, the second folding arm is an arm support structure that is bent laterally, and the telescopic arm is hinged to a lateral connection end of the second folding arm.

In the technical scheme, another telescopic arm side-placing method is provided: the second folding arm is arranged to be a laterally bent arm support structure, so that a side mechanism in the first telescopic arm side arrangement method is replaced, and in the assembling process, the side mechanism can be omitted and the arm support structure is simplified by hinging the side connecting end of the telescopic arm and the second folding arm.

In any of the above technical solutions, preferably, the driving mechanism includes: one end of the first oil cylinder is hinged with the rotary seat, and the other end of the first oil cylinder is hinged with the first folding arm.

In the technical scheme, a first oil cylinder is arranged in the arm support mechanism, preferably, one end of the first oil cylinder is an oil cylinder base, and the other end of the first oil cylinder is an oil cylinder telescopic end. The base of the first oil cylinder is hinged with the rotary seat, the telescopic end of the first oil cylinder is hinged with the first folding arm, and the first oil cylinder is connected with the oil pump through an oil way. In the working process, the oil pump presses hydraulic oil into the first oil cylinder, so that the telescopic end of the first oil cylinder extends out under the action of oil pressure, and the first folding arm is driven to unfold relative to the rotary seat. Correspondingly, when the oil pump withdraws the hydraulic oil in the first oil cylinder, the telescopic end of the first oil cylinder retracts, so that the first folding arm is driven to retract and the swivel base. And the oil cylinder drive has the advantages of strong bearing capacity, stable movement and the like, so that the arm support mechanism is more suitable for heavy-load occasions, the structure of the arm support mechanism is optimized, and the technical effects of improving the movement stability and reliability of the arm support mechanism are achieved.

In any of the above technical solutions, preferably, the fire engine further includes: the third folding arm is hinged with the telescopic end of the telescopic arm and is a two-section folding arm.

In the technical scheme, the third folding arm hinged to the telescopic end of the telescopic arm is arranged, so that the arm support mechanism is of a structure of folding, telescopic and folding, the arm support mechanism is firstly turned over by the first folding arm and the second folding arm in the working process, then the third folding arm is extended out by the telescopic arm, and finally the working position and the working angle are adjusted by the third folding arm. Therefore, the arm support mechanism can span the obstacle in front of the arm support mechanism through the adjusting angle, and the working equipment connected to the tail end of the arm support mechanism can adjust the working angle through the rotation of the third folding arm, so that the arm support mechanism can carry equipment to execute more precise work in angle and direction, the arm support mechanism is optimized, the flexibility and the obstacle spanning capability of the arm support mechanism are improved, the extension coverage range of the arm support mechanism is expanded, and the technical effects of the work accuracy and the reliability of products are improved.

The third folding arm is two sections of folding arms, and through setting up the third folding arm into two sections of folding arms, the flexibility ratio of third folding arm has been promoted, makes the third folding arm can be more nimble convenient stride the barrier and carry out fire control work, can also make the work coverage of third folding arm further enlarge simultaneously, and then realizes optimizing third folding arm structure, promotes cantilever crane mechanism work flexibility ratio and coverage, promotes product operational reliability's technological effect.

In any of the above solutions, preferably, in the retracted state, at least one section of the first folding arm, the second folding arm, the telescopic arm, and the third folding arm is parallel to each other.

In this technical scheme, when the cantilever crane mechanism is in the state of withdrawing, first folding arm is rotatory to horizontal position, it is relative, the second folding arm, flexible arm and third folding arm are adjusted to horizontal position through the upset equally, make cantilever crane mechanism reduce cantilever crane mechanism horizontal and vertical ascending space demand under the state of withdrawing through horizontal superpose as far as possible on the basis of folding reduction length, thereby make cantilever crane mechanism more exquisite compacter, and then realize the structure of optimizing cantilever crane mechanism, reduce cantilever crane mechanism space demand, promote the technological effect of product practicality.

In any one of the above technical solutions, preferably, the driving mechanism further includes: a first set of bars, the first set of bars comprising: one end of the first rod piece is hinged with the other end of the first folding arm; one end of the second rod piece is hinged with one end of the second folding arm, and the other end of the second rod piece is hinged with the other end of the first rod piece; one end of the second oil cylinder is hinged with the first folding arm, and the other end of the second oil cylinder is hinged with the first rod piece; a second set of bars, the second set of bars comprising: one end of the third rod piece is hinged with the fixed end of the telescopic arm; one end of the fourth rod is hinged with the other end of the second folding arm, and the other end of the fourth rod is hinged with the other end of the third rod; one end of the third oil cylinder is hinged with the fixed end of the telescopic arm, and the other end of the third oil cylinder is hinged with the third rod piece; a third bar set, the third bar set comprising: one end of the fifth rod piece is hinged with the telescopic end of the telescopic arm; one end of the sixth rod is hinged with the third folding arm, and the other end of the sixth rod is hinged with the other end of the fifth rod; one end of the fourth oil cylinder is hinged with the third folding arm, and the other end of the fourth oil cylinder is hinged with the fifth rod piece; the hinge point of the first folding arm and the hinge point of the second folding arm do not coincide with the hinge point of the first rod piece and the first folding arm; the hinge point of the first folding arm and the second folding arm is not superposed with the hinge point of the second rod piece and the second folding arm; the hinge point of the second folding arm and the telescopic arm is not superposed with the hinge point of the third rod piece and the telescopic arm; the hinge point of the second folding arm and the telescopic arm is not superposed with the hinge point of the fourth rod piece and the second folding arm; the hinge point of the telescopic arm and the third folding arm is not superposed with the hinge point of the fifth rod piece and the telescopic arm; the hinge point of the telescopic arm and the third folding arm is not overlapped with the hinge point of the sixth rod piece and the third folding arm.

In this technical scheme, actuating mechanism still includes first pole group and second hydro-cylinder, and preferably, the one end of second hydro-cylinder is the hydro-cylinder base, and the other end is the flexible end of hydro-cylinder. Wherein, first pole group comprises first member and second member, is provided with three pin joint on the first member, is provided with two pin joints on the second member. In the assembling process, a first hinge point of the first rod piece is hinged with the first folding arm, and the hinge point is not overlapped with the hinge point of the first folding arm and the second folding arm; the first hinge point of the second rod piece is hinged with the second folding arm, and the hinge point is also not superposed with the hinge point of the first folding arm and the second folding arm; the second hinge point of the first rod piece is hinged with the second hinge point of the second rod piece. Thereby through first member, second member, first member and the first pin joint of folding arm and second between the pin joint of folding arm and the second, the second member with the second hinge joint of folding arm and the first pin joint of folding arm and the second between the interval, form a set of four-bar linkage. On the basis, the base of the second oil cylinder is hinged with the first folding arm, and the telescopic end of the second oil cylinder is hinged with the third hinge point of the first rod piece. In the course of the work, the oil pump is with in the hydraulic oil pump sends the second hydro-cylinder, the flexible end of second hydro-cylinder stretches out under the oil pressure, in order to promote first member and second member to rotate, under above-mentioned four-bar linkage's effect, the folding arm of second is expanded to required working angle from the position that is parallel to each other with first folding arm, and then the expansion and the folding of the folding arm of second relative first folding arm have been realized, and the structure of optimizing cantilever crane mechanism has been realized, promote cantilever crane mechanism flexibility ratio, reduce cantilever crane mechanism occupation space, promote the technical effect of product reliability and practicality.

The driving mechanism further comprises a second rod group and a third oil cylinder, preferably, one end of the third oil cylinder is an oil cylinder base, and the other end of the third oil cylinder is an oil cylinder telescopic end. Wherein, the second pole group comprises third member and fourth member, is provided with three pin joint on the third member, is provided with two pin joint on the fourth member. In the assembling process, a first hinge point of the third rod piece is hinged with the telescopic arm, and the hinge point is not overlapped with the hinge point of the second folding arm and the telescopic arm; a first hinge point of the fourth rod piece is hinged with the second folding arm, and the hinge point is also not superposed with the hinge point of the second folding arm and the telescopic arm; the second hinge point of the third rod piece is hinged with the second hinge point of the fourth rod piece. Thereby through third member, fourth member, third member and the pin joint of flexible arm and the second between the pin joint of folding arm and flexible arm, the pin joint of fourth member and the second folding arm and the interval between the pin joint of second folding arm and flexible arm, form a set of four-bar linkage. On the basis, the base of the third oil cylinder is hinged with the telescopic arm, and the telescopic end of the third oil cylinder is hinged with the third hinge point of the third rod piece. In the course of the work, the oil pump is with in the hydraulic oil pump sends to the third hydro-cylinder, the flexible end of third hydro-cylinder stretches out under the oil pressure, rotate with promoting third member and fourth link, under above-mentioned four-bar linkage's effect, flexible arm is expanded to required working angle from the position that is parallel to each other with the second folding arm, and then realized the expansion and folding of the folding arm of the relative second of flexible arm, and realized the structure of optimizing cantilever crane mechanism, promote cantilever crane mechanism flexibility ratio, reduce cantilever crane mechanism occupation space, promote the technological effect of product reliability and practicality.

The driving mechanism further comprises a third rod group and a fourth oil cylinder, preferably, one end of the fourth oil cylinder is an oil cylinder base, and the other end of the fourth oil cylinder is an oil cylinder telescopic end. The third rod group consists of a fifth rod piece and a sixth rod piece, the fifth rod piece is provided with three hinge points, and the sixth rod piece is provided with two hinge points. In the assembling process, a first hinge point of the fifth rod piece is hinged with the telescopic arm, and the hinge point is not overlapped with the hinge point of the telescopic arm and the third telescopic arm; a first hinge point of the sixth rod piece is hinged with the third folding arm, and the hinge point is also not superposed with the hinge point of the telescopic arm and the third folding arm; the second hinge point of the fifth rod piece is hinged with the second hinge point of the sixth rod piece. Thereby through the interval between the pin joint of fifth member, sixth member, fifth member and flexible arm and the pin joint of flexible arm and third folding arm, the pin joint of sixth member and third folding arm and the interval between the pin joint of flexible arm and third folding arm, form a set of four-bar linkage. On the basis, the base of the fourth oil cylinder is hinged with the third folding arm, and the telescopic end of the fourth oil cylinder is hinged with the third hinge point of the fifth rod piece. In the course of the work, the oil pump is with in the hydraulic oil pump sends to the fourth hydro-cylinder, the flexible end of fourth hydro-cylinder stretches out under the oil pressure, rotate with promoting fifth member and sixth member, under above-mentioned four-bar linkage's effect, the third folding arm is expanded to required working angle from the position that is parallel to each other with flexible arm, and then realized the expansion and folding of the relative flexible arm of third folding arm, and realized the structure of optimizing cantilever crane mechanism, promote cantilever crane mechanism flexibility ratio, reduce cantilever crane mechanism occupation space, promote the technological effect of product reliability and practicality.

In any of the above technical solutions, preferably, the telescopic arm is two-section telescopic arm or three-section telescopic arm.

In the technical scheme, the telescopic arm is two sections of telescopic arms or three sections of telescopic arms. Taking three-section telescopic boom as an example, the telescopic boom is composed of a first section of telescopic boom, a second section of telescopic boom and a third section of telescopic boom. One section flexible arm is the major structure of flexible arm, and its one section is articulated mutually with the folding arm of second son, wholly contains the tubular structure of cavity for inside. The two sections of telescopic arms are both tubular structures with cavities arranged inside and are arranged in the cavities of the one section of folding arms. The three sections of folding arms are arranged in the cavity of the three sections of folding arms. When the telescopic boom is not extended, the two sections of telescopic booms are positioned in the cavity of the one section of telescopic boom, and the three sections of telescopic booms are positioned in the cavity of the two sections of telescopic booms; when the telescopic arm extends, the two sections of telescopic arms extend out along the cavity extending direction of the one section of folding arm, and the three sections of telescopic arms extend out along the cavity extending direction of the two sections of telescopic arms, so that the second folding arm connected with the three sections of telescopic arms extends to a required working position. The nested telescopic boom occupies a smaller space in a retracting state, so that the boom mechanism is more exquisite and compact, the telescopic length of the nested telescopic boom is shorter, designated work can be completed quickly in a short time, the telescopic time is saved, the boom mechanism is optimized, the working efficiency of the telescopic boom is improved, the structural compactness of a product is improved, and the technical effect of the working reliability of the product is improved.

In any of the above technical solutions, preferably, the fire engine further includes: the water cannon is arranged at the tail end of the third folding arm; the water supply system is arranged on the chassis; and the pipeline system is arranged on the chassis, one end of the pipeline system is connected with a water supply system, and the other end of the pipeline system extends along the arm support mechanism and is connected with the water cannon.

In this technical scheme, through set up the water cannon at third folding arm, make the fire engine can transport the water cannon to source of a fire department and put out the source of a fire through the high-pressure water column that the water cannon jetted out through extension cantilever crane mechanism to realize the fire control operation. Wherein, still be provided with water supply system and the pipe-line system that keeps water cannon work on the chassis, water supply system, pipe-line system and water cannon link to each other in proper order, and water supply system is during with fire-fighting water pump sending pipeline system to finally spout from water cannon department in the course of the work, in order to accomplish the fire control operation through the water cannon.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural diagram of a fire fighting vehicle provided according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of a fire fighting vehicle according to another embodiment of the present invention;

FIG. 3 shows a top view of the fire engine provided in the embodiment shown in FIG. 2;

fig. 4 shows a schematic structural view of a first set of bars provided according to an embodiment of the present invention;

fig. 5 shows a schematic structural view of a second set of bars provided according to an embodiment of the invention;

fig. 6 shows a schematic structural view of a third rod set provided according to an embodiment of the present invention;

FIG. 7 shows a schematic structural view of a biasing mechanism provided in the embodiment shown in FIG. 1;

fig. 8 illustrates a bottom view of the biasing mechanism provided by the embodiment shown in fig. 7.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:

1 fire engine, 10 chassis, 102 cab, 12 swivel, 14 boom mechanism, 142 first folding arm, 144 second folding arm, 146 telescopic arm, 148 section telescopic arm, 150 section telescopic arm, 152 section telescopic arm, 154 side mechanism, 156 third folding arm, 162 first oil cylinder, 164 first rod group, 166 first rod piece, 168 second rod piece, 170 second oil cylinder, 172 second rod group, 174 third rod piece, 176 fourth rod piece, 178 third oil cylinder, 180 third rod group, 182 fifth rod piece, 184 sixth rod piece, 186 fourth oil cylinder, 20 water cannon.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A fire fighting vehicle 1 according to some embodiments of the present invention is described below with reference to fig. 1 to 8.

In view of this, according to the embodiment of the present invention, as shown in fig. 1, a fire fighting truck 1 is provided, the fire fighting truck 1 including: a chassis 10, wherein one end of the chassis 10 is provided with a cab 102; a rotary seat 12 arranged on the chassis 10; cantilever crane mechanism 14, cantilever crane mechanism 14 includes: a first folding arm 142, one end of the first folding arm 142 is hinged with the rotary seat 12; a second folding arm 144, one end of the second folding arm 144 being hinged to the other end of the first folding arm 142; a fixed end of the telescopic arm 146 is hinged with the other end of the second folding arm 144; the driving mechanism is connected with the arm support mechanism 14 so as to drive the arm support mechanism 14 to unfold or retract; when the arm support mechanism 14 is in the retracted state, the second folding arm 144 is located right above the first folding arm 142, and the telescopic arm 146 is located at the side of the second folding arm 144.

According to the utility model provides a cantilever crane mechanism 14, chassis 10 are the main part bearing structure of fire engine 1 for bear and support other structures on the fire engine 1, one of chassis 10 serves and is provided with driver's cabin 102, and the user can accomplish controlling to fire engine 1 in driver's cabin 102. The rotary seat 12 is a base structure of the arm support mechanism 14, and the arm support mechanism 14 is connected with engineering equipment such as the fire fighting truck 1 and the like through the rotary seat 12 so as to drive the arm support mechanism 14 to rotate together with the rotary seat 12. The arm support mechanism 14 is composed of three parts: the first part is a first folding arm 142, a first end of the first folding arm 142 is hinged with the rotary seat 12, and the first folding arm 142 rotates relative to the rotary seat 12 in the working process; the second part is a second folding arm 144, a first end of the second folding arm 144 is hinged with a second end of the first folding arm 142, and the second folding arm 144 rotates relative to the first folding arm 142 in the working process; the third part is a telescopic arm 146, the telescopic arm 146 is an arm support with adjustable length, the fixed end of the telescopic arm 146 is hinged with the second end of the second folding arm 144, and the telescopic arm 146 rotates relative to the second end of the first folding arm 142 in the working process and extends or shortens on the basis. The driving mechanism is a power structure of the arm support mechanism 14, and is used for providing power to the arm support mechanism 14 to realize rotation of the arm support mechanism 14.

By arranging the first folding arm 142 and the second folding arm 144, after the boom mechanism 14 is turned over by the first folding arm 142, the working angle of the boom mechanism 14 is further adjusted by the second folding arm 144, so that the flexibility of the boom mechanism 14 is enhanced, and the boom mechanism 14 can cross over a front obstacle by the first folding arm 142 and the second folding arm 144. Through setting up telescopic boom 146, the work coverage of cantilever crane mechanism 14 has increased substantially to, telescopic boom 146 is less in the shared space under the recovery state, can reduce the shared space of cantilever crane mechanism 14, and telescopic boom opens fastly in addition, is favorable to carrying out the fire control fast and puts out a fire. Therefore, the technical effects of optimizing the structure of the arm support mechanism 14, improving the flexibility of the arm support mechanism 14 and improving the working accuracy and reliability of products are achieved.

On this basis, the utility model discloses still specifically limited the spatial position of cantilever crane mechanism 14. Specifically, when the boom mechanism 14 is in the retracted state, the second folding arm 144 is located directly above the first folding arm 142, and the telescopic arm 146 is located at the side of the second folding arm 144. By limiting the spatial position relationship, in the unfolding process of the boom mechanism 14, the first folding arm 142 rotates towards the front of the fire truck 1 relative to the rotary seat 12, the second folding arm 144 rotates towards the rear of the fire truck 1 relative to the first folding arm 142, and the telescopic arm 146 rotates towards the front of the fire truck 1 relative to the second folding arm 144, so that the boom mechanism 14 which is unfolded in a zigzag manner is formed. By arranging the boom mechanism 14 as the boom mechanism 14 which is unfolded in a zigzag manner, the first folding arm 142, the second folding arm 144 and the telescopic arm 146 on the boom mechanism 14 can start to rotate at the same time, so that the problem of mutual interference when the first folding arm 142, the second folding arm 144 and the telescopic arm 146 are unfolded at the same time is avoided, and the unfolding time of the boom mechanism 14 is shortened. Meanwhile, the front end of the cantilever crane mechanism 14 which is unfolded in a Z shape extends out of the front of the cab 102, so that the fire fighting truck 1 can extend out of the cantilever crane mechanism 14 at the first time after driving to a fire source and carry out fire fighting operation, and the working procedures of turning a truck head and rotating the swivel base 12 are omitted, so that the preparation time of the cantilever crane mechanism 14 is further shortened, the cantilever crane mechanism 14 is optimized, the unfolding time of the cantilever crane mechanism 14 is shortened, the working efficiency of the fire fighting truck 1 is improved, and the technical effect of product reliability is improved.

Specifically, in the existing elevating jet fire truck, a plurality of sub-booms in the boom mechanism are unfolded towards the same direction, and each stage of boom can execute rotation after waiting for the rotation of the previous stage of boom by a certain angle in the unfolding process, so that a large amount of time is wasted, and the technical problem of low fire fighting efficiency is caused. Meanwhile, in the existing elevating jet fire truck, the boom mechanism extends out of the tail part of the fire truck, and when fire fighting operation is performed, a user needs to transfer the direction of the fire truck or integrally rotate the boom mechanism to perform the fire fighting operation on a fire source in front of a cab, so that the technical problems of overlong preparation time and low efficiency are caused. To the technical problem, the utility model discloses a set up cantilever crane mechanism 14 into the zigzag and expand, make first folding arm 142, second folding arm 144 and flexible arm 146 can rotate simultaneously at the very first time to solved cantilever crane mechanism 14 inside mutual interference, the long technical problem of expansion time. And, the utility model discloses a set up the zigzag cantilever crane mechanism 14 front end and stretch out from driver's cabin 102 the place ahead, make the user can carry out the fire control operation under the condition of not changing locomotive direction and whole rotating cantilever crane mechanism 14 to the long technical problem of cantilever crane mechanism 14 preparation time has been solved.

In an embodiment of the present invention, it is preferable that, as shown in fig. 2 and 3, when the arm support mechanism 14 is in the retracted state, a part of the telescopic arm 146 is located right above the cab 102, and the telescopic arm 146 and the second folding arm 144 are located on the same horizontal plane.

In this embodiment, the position of the boom mechanism 14 in the retracting state is further limited, when the boom mechanism 14 is in the retracting state, the telescopic arm 146 is wholly located above the cab 102, and part of the telescopic arm 146 is located directly above the cab 102, the telescopic arm 146 and the second folding arm 144 are located on the same horizontal plane, so that the space requirement part of the telescopic arm 146 in the length direction is transferred to the upper side of the cab 102, so as to reduce the overall length requirement of the fire fighting truck 1, so that the fire fighting truck 1 with the same length can accommodate the telescopic arm 146 with a longer length, thereby realizing optimization of the boom mechanism 14, improving the structural compactness of the fire fighting truck 1, and improving the technical effect of the practicability of the fire fighting truck 1.

In an embodiment of the present invention, preferably, as shown in fig. 7 and 8, the fire fighting vehicle 1 further includes: the side mechanism 154, the side mechanism 154 includes two opposite hinged connecting ends, one connecting end is connected to the second folding arm 144, and the other connecting end is connected to the telescopic arm 146.

In this embodiment, a telescopic arm side-placing method is proposed: the arm support mechanism 14 is further provided with a side mechanism 154, wherein the side mechanism 154 includes two connecting ends hinged to each other, the two connecting ends are arranged in a staggered manner in the transverse or longitudinal direction, one of the connecting ends is connected with the second folding arm 144, and the other connecting end is connected with the telescopic arm 146. Specifically, the side mechanism 154 is composed of a first arm head and a second arm head, which are rotatably connected to each other and laterally disposed, wherein the first arm head is connected to the second folding arm 144, and the second arm head is connected to the telescopic arm 146. In the working process, the first arm head and the second arm head can rotate relatively, so that the second folding arm 144 and the telescopic arm 146 can be laterally arranged on the same plane, the lateral space of the arm support mechanism 14 is effectively utilized, the space requirement of the length direction of the arm support mechanism 14 in the withdrawing state is reduced, the structure of the arm support mechanism 14 is optimized, the structural compactness of the arm support mechanism 14 is improved, the space requirement of the arm support mechanism 14 is reduced, and the technical effect of the product practicability is improved.

In an embodiment of the present invention, preferably, the second folding arm 144 is a laterally bent arm frame structure, and the telescopic arm 146 is hinged to the lateral connecting end of the second folding arm 144.

In this embodiment, another telescopic arm 146 side-positioning method is proposed: the second folding arm 144 is arranged to be a laterally bent arm support structure, so that the side mechanism 154 in the first telescopic arm 146 side method is replaced, and in the assembling process, the side mechanism 154 can be omitted by hinging the telescopic arm 146 with the side connecting end of the second folding arm 144, so that the arm support structure is simplified.

In an embodiment of the present invention, preferably, as shown in fig. 1, the driving mechanism includes: one end of the first oil cylinder 162 is hinged to the rotary base 12, and the other end of the first oil cylinder 162 is hinged to the first folding arm 142.

In this embodiment, the boom mechanism 14 is provided with a first cylinder 162, and preferably, one end of the first cylinder 162 is a cylinder base, and the other end is a cylinder telescopic end. The base of the first oil cylinder 162 is hinged to the rotating base 12, the telescopic end of the first oil cylinder 162 is hinged to the first folding arm 142, and the first oil cylinder 162 is connected with the oil pump through an oil path. In the working process, the oil pump presses hydraulic oil into the first oil cylinder 162, so that the telescopic end of the first oil cylinder 162 extends out under the action of oil pressure, and the first folding arm 142 is driven to unfold relative to the swivel base 12. Correspondingly, when the oil pump withdraws the hydraulic oil in the first oil cylinder 162, the telescopic end of the first oil cylinder 162 retracts, so as to drive the first folding arm 142 to retract to the swivel base 12. Moreover, the oil cylinder drive has the advantages of strong bearing capacity, stable movement and the like, so that the arm support mechanism 14 is more suitable for heavy-load occasions, the structure of the arm support mechanism 14 is optimized, and the technical effects of improving the movement stability and reliability of the arm support mechanism 14 are achieved.

In an embodiment of the present invention, preferably, as shown in fig. 1, the fire fighting truck 1 further includes: and a third folding arm 156 hinged to the telescopic end of the telescopic arm 146, wherein the third folding arm 156 is a two-section folding arm.

In this embodiment, the third folding arm 156 hinged to the telescopic end of the telescopic arm 146 is provided, so that the boom mechanism 14 is in a structure of folding + telescopic + folding, during the operation of the boom mechanism 14, the boom mechanism 14 is firstly turned over by the first folding arm 142 and the second folding arm 144, then the telescopic arm 146 extends out the third folding arm 156, and finally the operation position and the operation angle are adjusted by the third folding arm 156. Therefore, the boom mechanism 14 can span the obstacle in front of the boom mechanism 14 by adjusting the angle, and the working equipment connected to the tail end of the boom mechanism 14 can adjust the working angle by rotating the third folding arm 156, so that the boom mechanism 14 can carry equipment to perform more precise work in angle and direction, thereby optimizing the boom mechanism 14, improving the flexibility and the obstacle spanning capability of the boom mechanism 14, widening the extension coverage range of the boom mechanism 14, and improving the technical effects of the work accuracy and reliability of the product.

The third folding arm 156 is two sections of folding arms, and through setting up the third folding arm 156 into two sections of folding arms, the flexibility ratio of the third folding arm 156 has been promoted, make the third folding arm 156 can be more nimble convenient stride across the barrier and carry out fire control work, can also make the work coverage of the third folding arm 156 further enlarge simultaneously, and then realize optimizing the third folding arm 156 structure, promote cantilever crane mechanism 14 work flexibility ratio and coverage, promote the technological effect of product operational reliability.

In one embodiment of the present invention, preferably, as shown in fig. 2 and 3, in the retracted state, at least one section of the first folding arm 142, the second folding arm 144, the telescopic arm 146 and the third folding arm 156 are parallel to each other.

In this embodiment, when the boom mechanism 14 is in the retracting state, the first folding arm 142 rotates to the horizontal position, and the second folding arm 144, the telescopic arm 146 and the third folding arm 156 are also adjusted to the horizontal position by being turned over, so that the boom mechanism 14 can reduce the space requirement of the boom mechanism 14 in the retracting state in the horizontal and longitudinal directions as much as possible by horizontal stacking on the basis of the folding reduced length, and thus the boom mechanism 14 is more compact, the structure of the boom mechanism 14 can be optimized, the space requirement of the boom mechanism 14 can be reduced, and the technical effect of improving the product practicability can be achieved.

In an embodiment of the present invention, preferably, as shown in fig. 4, 5 and 6, the driving mechanism further includes: a first bar set 164, the first bar set 164 comprising: a first rod 166, one end of the first rod 166 is hinged with the other end of the first folding arm 142; a second rod 168, one end of the second rod 168 is hinged with one end of the second folding arm 144, and the other end of the second rod 168 is hinged with the other end of the first rod 166; one end of the second oil cylinder 170 is hinged with the first folding arm 142, and the other end of the second oil cylinder 170 is hinged with the first rod 166; a second bar set 172, the second bar set 172 comprising: a third rod 174, wherein one end of the third rod 174 is hinged with the fixed end of the telescopic arm 146; a fourth lever 176, one end of the fourth lever 176 being hinged to the other end of the second folding arm 144, and the other end of the fourth lever 176 being hinged to the other end of the third lever 174; one end of the third oil cylinder 178 is hinged with the fixed end of the telescopic arm 146, and the other end of the third oil cylinder 178 is hinged with the third rod 174; a third bar set 180, the third bar set 180 comprising: one end of the fifth rod 182 is hinged with the telescopic end of the telescopic arm 146; a sixth rod 184, wherein one end of the sixth rod 184 is hinged to the third folding arm 156, and the other end of the sixth rod 184 is hinged to the other end of the fifth rod 182; one end of the fourth oil cylinder 186 is hinged with the third folding arm 156, and the other end of the fourth oil cylinder 186 is hinged with the fifth rod 182; wherein the hinge point of the first folding arm 142 and the second folding arm 144 is not coincident with the hinge point of the first lever 166 and the first folding arm 142; the articulation point of the first and second folding arms 142, 144 is not coincident with the articulation point of the second bar 168, 144; the hinge point of the second folding arm 144 and the telescopic arm 146 does not coincide with the hinge point of the third rod 174 and the telescopic arm 146; the articulation point of the second folding arm 144 and the telescopic arm 146 does not coincide with the articulation point of the fourth bar 176 and the second folding arm 144; the hinge point of the telescopic arm 146 and the third folding arm 156 is not coincident with the hinge point of the fifth rod 182 and the telescopic arm 146; the hinge point of the telescopic arm 146 and the third folding arm 156 is not coincident with the hinge point of the sixth lever 184 and the third folding arm 156.

In this embodiment, the driving mechanism further includes a first rod set 164 and a second cylinder 170, and preferably, one end of the second cylinder 170 is a cylinder base, and the other end is a cylinder telescopic end. The first rod set 164 is composed of a first rod 166 and a second rod 168, the first rod 166 is provided with three hinge points, and the second rod 168 is provided with two hinge points. During assembly, the first hinge point of the first rod 166 is hinged to the first folding arm 142, and the hinge point is not overlapped with the hinge points of the first folding arm 142 and the second folding arm 144; a first hinge point of the second rod 168 is hinged to the second folding arm 144, and is also not coincident with the hinge point of the first folding arm 142 and the second folding arm 144; the second hinge point of the first link 166 is hinged to the second hinge point of the second link 168. A set of four-bar linkages is thus formed by the first and

second bars

166 and 168, the interval between the hinge point of the first bar 166 and the first folding arm 142 and the hinge point of the first and second

folding arms

142 and 144, and the interval between the hinge point of the second bar 168 and the second folding arm 144 and the hinge point of the first and second

folding arms

142 and 144. On the basis, the base of the second oil cylinder 170 is hinged with the first folding arm 142, and the telescopic end of the second oil cylinder 170 is hinged with the third hinge point of the first rod 166. In the working process, the oil pump pumps hydraulic oil to the second oil cylinder 170, the telescopic end of the second oil cylinder 170 extends out under the oil pressure to push the first rod piece 166 and the second rod piece 168 to rotate, and under the action of the four-bar linkage mechanism, the second folding arm 144 is unfolded to a required working angle from a position parallel to the first folding arm 142, so that the second folding arm 144 is unfolded and folded relative to the first folding arm 142, the structure of the optimized arm support mechanism 14 is realized, the flexibility of the arm support mechanism 14 is improved, the occupied space of the arm support mechanism 14 is reduced, and the technical effects of product reliability and practicability are improved.

The driving mechanism further comprises a second rod group 172 and a third oil cylinder 178, preferably, one end of the third oil cylinder 178 is an oil cylinder base, and the other end is an oil cylinder telescopic end. The second rod set 172 is composed of a third rod 174 and a fourth rod 176, the third rod 174 is provided with three hinge points, and the fourth rod 176 is provided with two hinge points. During assembly, the first hinge point of the third rod 174 is hinged to the telescopic arm 146, and the hinge point is not overlapped with the hinge point of the second folding arm 144 and the telescopic arm 146; the first articulation point of the fourth rod 176 is articulated to the second folding arm 144, which is also not coincident with the articulation point of the second folding arm 144 and the telescopic arm 146; the second hinge point of the third link 174 is hinged to the second hinge point of the fourth link 176. A set of four-bar linkages is thus formed by the spacing between the third bar 174, the fourth bar 176, the hinge point of the third bar 174 to the telescopic arm 146 and the hinge point of the second folding arm 144 to the telescopic arm 146, and the spacing between the hinge point of the fourth bar 176 to the second folding arm 144 and the hinge point of the second folding arm 144 to the telescopic arm 146. On the basis, the base of the third oil cylinder 178 is hinged with the telescopic arm 146, and the telescopic end of the third oil cylinder 178 is hinged with the third hinge point of the third rod 174. In the working process, the oil pump pumps hydraulic oil to the third oil cylinder 178, the telescopic end of the third oil cylinder 178 extends out under the oil pressure to push the third rod piece 174 and the fourth rod piece 176 to rotate, under the action of the four-bar linkage, the telescopic arm 146 is unfolded to a required working angle from a position parallel to the second folding arm 144, so that the telescopic arm 146 is unfolded and folded relative to the second folding arm 144, the structure of optimizing the arm support mechanism 14 is realized, the flexibility of the arm support mechanism 14 is improved, the occupied space of the arm support mechanism 14 is reduced, and the technical effects of product reliability and practicability are improved.

The driving mechanism further comprises a third rod group 180 and a fourth oil cylinder 186, preferably, one end of the fourth oil cylinder 186 is an oil cylinder base, and the other end is an oil cylinder telescopic end. The third rod group 180 is composed of a fifth rod 182 and a sixth rod 184, the fifth rod 182 is provided with three hinge points, and the sixth rod 184 is provided with two hinge points. During assembly, the first hinge point of the fifth rod 182 is hinged to the telescopic arm 146, and the hinge point is not overlapped with the hinge point of the telescopic arm 146 and the third telescopic arm 156; the first hinge point of the sixth link 184 is hinged to the third folding arm 156, and this hinge point is also not coincident with the hinge point of the telescopic arm 146 and the third folding arm 156; the second hinge point of the fifth link 182 is hinged to the second hinge point of the sixth link 184. A set of four-bar linkages is thus formed by the spacing between the fifth lever 182, the sixth lever 184, the hinge point of the fifth lever 182 to the telescopic arm 146 and the hinge points of the telescopic arm 146 and the third folding arm 156, and the spacing between the hinge point of the sixth lever 184 to the third folding arm 156 and the hinge points of the telescopic arm 146 and the third folding arm 156. On the basis, the base of the fourth oil cylinder 186 is hinged to the third folding arm 156, and the telescopic end of the fourth oil cylinder 186 is hinged to the third hinge point of the fifth rod 182. In the course of the work, the oil pump is with in the hydraulic oil pump sends fourth hydro-cylinder 186, the flexible end of fourth hydro-cylinder 186 stretches out under the oil pressure, in order to promote fifth pole piece 182 and sixth pole piece 184 and rotate, under above-mentioned four-bar linkage's effect, third folding arm 156 is expanded to required working angle from the position that is parallel to telescopic arm 146 mutually, and then realized the expansion and folding of third folding arm 156 relative telescopic arm 146, and realized optimizing boom mechanism 14's structure, promote boom mechanism 14 flexibility ratio, reduce boom mechanism 14 occupation space, promote the technological effect of product reliability and practicality.

In one embodiment of the present invention, the telescopic arm 146 is preferably two telescopic arms or three telescopic arms, as shown in fig. 1.

In this embodiment, the telescoping arm 146 is a two-section telescoping arm or a three-section telescoping arm 146. Taking three-segment telescopic boom as an example, the telescopic boom 146 is composed of a first segment of telescopic boom 148, a second segment of telescopic boom 150 and a third segment of telescopic boom 152. The first section 148 is a main structure of the telescopic arm 146, and a section of the first section is hinged with the second sub-folding arm, and the whole body is a tubular structure with a cavity inside. The two-section telescopic arm 150 is also a tubular structure with a cavity inside, and is arranged in the cavity of the one-section folding arm. The three sections of folding arms are arranged in the cavity of the three sections of folding arms. When the telescopic arm 146 is not extended, the two sections of telescopic arms 150 are located in the cavity of the one section of telescopic arm 148, and the three sections of telescopic arms 152 are located in the cavity of the two sections of telescopic arms 150; when the telescopic arm 146 is extended, the two-section telescopic arm 150 extends out along the cavity extending direction of the one-section folding arm, and the three-section telescopic arm 152 extends out along the cavity extending direction of the two-section telescopic arm 150, so as to extend the second folding arm 144 connected with the three-section telescopic arm 152 to a required working position. The nested telescopic arm 146 occupies a smaller space in a retracting state, so that the boom mechanism 14 is more exquisite and compact, the telescopic time of the nested telescopic arms 146 is shorter, designated work can be completed quickly in a short time, the telescopic time is saved, the boom mechanism 14 is optimized, the working efficiency of the telescopic arms 146 is improved, the structural compactness of a product is improved, and the technical effect of the working reliability of the product is improved.

In an embodiment of the present invention, preferably, as shown in fig. 1, the fire fighting truck 1 further includes: a water cannon 20 provided at the end of the third folding arm 156; a water supply system arranged on the chassis 10; and the pipeline system is arranged on the chassis 10, one end of the pipeline system is connected with a water supply system, and the other end of the pipeline system extends along the arm support mechanism 10 and is connected with the water cannon 20.

In this embodiment, by providing the water cannon 20 on the third folding arm 156, the fire fighting truck 1 can transport the water cannon 20 to the fire source through the arm extending mechanism 14 and extinguish the fire source through the high-pressure water column ejected from the water cannon 20, thereby realizing the fire fighting operation. Wherein, still be provided with on the chassis 10 and maintain water supply system and the pipe-line system of water cannon 20 work, water supply system, pipe-line system and water cannon 20 link to each other in proper order, and during the course of the work water supply system is with fire-fighting water pump send the pipe-line system to spout from water cannon 20 department finally, in order to accomplish the fire control operation through water cannon 20.

In a specific embodiment of the present invention, the arm support mechanism 14 may further have the following extension structure:

1) the first folding arm 142 or the second folding arm 144 may be split into a plurality of sub-folding arms based on the spatial arrangement of the first folding arm 142 and the second folding arm 144;

2) the telescopic arm 146 includes but is not limited to three sections, and more stages of sub telescopic arms 146 can be added on the basis of a first section of telescopic arm 148, a second section of telescopic arm 150 and a third section of telescopic arm 152;

3) the third folding arm 156 includes, but is not limited to, a segment, and the third folding arm 156 may be composed of a plurality of sub-folding arms;

4) the end of the third folding arm 156 may be fitted with any fire fighting device other than the monitor 20, for example: a firefighter head and a solid firefighter nozzle;

5) besides the driving mechanism of the oil cylinder and the rod group explained in the scheme, a hydraulic motor can be arranged to directly drive the structures at the two ends of the hinge point to rotate.

In the present invention, the terms "mounting", "connecting", "fixing" and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 the invention. In this specification, the schematic representations of the terms used above do not necessarily 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.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. A fire fighting vehicle, characterized in that the fire fighting vehicle comprises:

the chassis, one end of the said chassis has driver's cab;

the rotating seat is arranged on the chassis;

the arm support mechanism comprises:

one end of the first folding arm is hinged with the rotary seat;

one end of the second folding arm is hinged with the other end of the first folding arm;

the fixed end of the telescopic arm is hinged with the other end of the second folding arm;

the driving mechanism is connected with the arm support mechanism to drive the arm support mechanism to be unfolded or retracted;

when the arm support mechanism is in a retracting state, the second folding arm is located above the first folding arm, and the telescopic arm is located on the side of the second folding arm.

2. The fire engine of claim 1, wherein when the boom mechanism is in the retracted state, a portion of the telescopic boom is positioned directly above the cab, and the telescopic boom and the second folding boom are positioned on the same horizontal plane.

3. The fire engine of claim 1, further comprising:

the side mechanism comprises two connecting ends which are hinged oppositely, one connecting end is connected with the second folding arm, and the other connecting end is connected with the telescopic arm.

4. The fire engine of claim 1, wherein the second folding arm is a laterally bent arm support structure, and the telescopic arm is hinged to a lateral connecting end of the second folding arm.

5. The fire engine of claim 1, wherein the drive mechanism comprises:

the base of the first oil cylinder is hinged to the rotary seat, and the telescopic end of the first oil cylinder is hinged to the first folding arm.

6. The fire engine of claim 1, further comprising:

the third folding arm is hinged to the telescopic end of the telescopic arm, and the third folding arm is a two-section folding arm.

7. The fire engine of claim 6, wherein in a retracted state, at least a segment of the first, second, telescoping, and third folding arms are parallel to each other.

8. The fire engine of claim 7, wherein the drive mechanism further comprises:

a first set of bars, the first set of bars comprising:

one end of the first rod piece is hinged with the other end of the first folding arm;

one end of the second rod piece is hinged with one end of the second folding arm, and the other end of the second rod piece is hinged with the other end of the first rod piece;

the base of the second oil cylinder is hinged with the first folding arm, and the telescopic end of the second oil cylinder is hinged with the first rod piece;

a second set of bars, the second set of bars comprising:

one end of the third rod piece is hinged with the fixed end of the telescopic arm;

one end of the fourth rod is hinged with the other end of the second folding arm, and the other end of the fourth rod is hinged with the other end of the third rod;

the base of the third oil cylinder is hinged with the fixed end of the telescopic arm, and the telescopic end of the third oil cylinder is hinged with the third rod piece;

a third bar set comprising:

one end of the fifth rod piece is hinged with the telescopic end of the telescopic arm;

one end of the sixth rod is hinged with the third folding arm, and the other end of the sixth rod is hinged with the other end of the fifth rod;

wherein a hinge point of the first folding arm and the second folding arm is not coincident with a hinge point of the first rod and the first folding arm;

the hinge point of the first folding arm and the second folding arm is not coincident with the hinge point of the second rod piece and the second folding arm;

the hinge point of the second folding arm and the telescopic arm is not superposed with the hinge point of the third rod piece and the telescopic arm;

the hinge point of the second folding arm and the telescopic arm is not superposed with the hinge point of the fourth rod piece and the second folding arm;

the hinged point of the telescopic arm and the third folding arm is not overlapped with the hinged point of the fifth rod piece and the telescopic arm;

and the hinge point of the telescopic arm and the third folding arm is not overlapped with the hinge point of the sixth rod piece and the third folding arm.

9. A fire fighting vehicle as recited in any of claims 1 to 8, wherein the telescopic boom is a two-section telescopic boom or a three-section telescopic boom.

10. A fire engine as recited in any one of claims 6 to 8, further comprising:

the water cannon is arranged at the tail end of the third folding arm;

the water supply system is arranged on the chassis;

and the pipeline system is arranged on the chassis, one end of the pipeline system is connected with the water supply system, and the other end of the pipeline system extends along the arm support mechanism and is connected with the water cannon.