Lifting device and fire fighting truck
By designing the enclosed structure of the internal and external telescopic components and telescopic drive parts in the fire truck lifting device, the problem of media penetration is solved, the equipment safety and service life is improved, and maintenance costs and energy consumption are reduced.
Patent Information
- Application Number
- CN202421707295.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-18
AI Technical Summary
In existing fire truck lifting devices, media is prone to seep into the telescopic cylinder, resulting in equipment damage and high maintenance costs.
Design an inner and outer layer telescopic components that are nested inside and outside, and expand and contract simultaneously through the telescopic drive member to limit the medium conveying space, and wrap the telescopic drive member inside the medium conveying space to prevent the medium from infiltration.
Effectively prevent media from penetrating into the telescopic drive parts, improve equipment safety and service life, reduce maintenance costs, and have a simple structure to reduce overall load and energy consumption.
Smart Images
Figure CN223042040U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire fighting, in particular to a lifting device and a fire truck. Background Art
[0002] With the complication of the application scenarios of fire trucks, how to improve the fire extinguishing range of fire guns has become one of the important research directions of fire trucks. For the fire extinguishing range, existing fire trucks generally adjust the operation height of the fire gun through a luffing mechanism to achieve the adjustment of the fire extinguishing range, or set the fire gun on a lifting device, and cooperate with a telescopic lifting device and a luffing mechanism to adjust the operation height of the fire gun, so as to achieve the adjustment of the fire extinguishing range. However, the former has great limitations and the height adjustment range is limited.
[0003] In the latter solution, existing lifting devices are roughly divided into two types. One is a structure of a telescopic boom or truss plus a combined water pipe, and the other is a telescopic water pipe with a telescopic function. However, the lifting device with a telescopic boom form or truss structure has a complex structure and requires an external water pipe for transporting the medium, resulting in a high cost; the telescopic water pipe with a telescopic function can be subdivided into two forms: internal and external. However, the external form of the telescopic water pipe has a complex structure and is too heavy, and the medium flowing inside the internal form of the telescopic water pipe is likely to penetrate into the telescopic cylinder, which will cause irreversible damage to the telescopic cylinder and greatly increase the use and maintenance costs. Summary of the Utility Model
[0004] The first aspect of the utility model provides a lifting device to solve the defect that the medium is easily infiltrated into the telescopic cylinder in the prior art. By an inner telescopic component and an outer telescopic component nested with each other, a medium conveying space is restricted, and the telescopic driving part is wrapped inside the medium conveying space by the inner telescopic component, so that the medium conveying space can be isolated from the telescopic driving part, and further the medium in the medium conveying space can be prevented from infiltrating into the inside of the telescopic driving part.
[0005] The second aspect of the utility model provides a fire truck.
[0006] The lifting device provided by the utility model includes:
[0007] A support assembly arranged on the vehicle body;
[0008] A conveying assembly connected to the storage tank for conveying a fire extinguishing medium;
[0009] The lifting component is rotatably arranged on the support component. The lifting component includes a luffing member, an outer telescopic member, an inner telescopic member, and a telescopic driving member. The telescopic driving member is arranged inside the inner telescopic member. The outer telescopic member is sleeved outside the inner telescopic member. A medium conveying space is defined between the inner telescopic member and the outer telescopic member. One end of the medium conveying space is communicated with the conveying component, and the other end is communicated with the fire fighting gun. The inner telescopic member and the outer telescopic member are adapted to synchronously telescope under the drive of the telescopic driving member. One end of the luffing member is rotatably connected to the support component, and the other end is rotatably connected to the outer telescopic member.
[0010] According to the lifting device provided by the present invention, the outer telescopic member includes an outer first telescopic tube, an outer second telescopic tube, and a partition. The outer first telescopic tube is sleeved outside the outer second telescopic tube and is slidably matched with the outer second telescopic tube. The outer first telescopic tube is rotatably connected to the support component. One end of the outer second telescopic tube away from the outer first telescopic tube is connected to the fire fighting gun. A conveying port communicated with the conveying component is provided on the outer first telescopic tube. The partition is arranged on one side of the conveying port away from the outer second telescopic tube.
[0011] According to the lifting device provided by the present invention, the inner telescopic member includes an inner first telescopic tube, an inner second telescopic tube, and at least one mounting member. The inner first telescopic tube is sleeved outside the inner second telescopic tube and is slidably matched with the inner second telescopic tube. One end of the inner first telescopic tube away from the inner second telescopic tube is fixed to the partition. One end of the inner second telescopic tube away from the inner first telescopic tube is fixedly connected to the outer second telescopic tube through the mounting member.
[0012] According to the lifting device provided by the present invention, the telescopic driving member includes a cylinder barrel, a piston rod, a piston, and an end cover. The end cover is arranged at the opening of the cylinder barrel. The piston is arranged inside the cylinder barrel and is slidably matched with the cylinder barrel. One end of the piston rod is connected to the piston, and the other end passes through the end cover and the partition and is fixed to the outer first telescopic tube. The bottom of the cylinder barrel is fixed to the inner second telescopic tube.
[0013] According to the lifting device provided by the present invention, there are multiple mounting members. The multiple mounting members are evenly spaced along the circumferential direction of the inner second telescopic tube between the inner second telescopic tube and the outer second telescopic tube.
[0014] According to the lifting device provided by the present utility model, the luffing component includes a first luffing oil cylinder and a second luffing oil cylinder. The first luffing oil cylinder and the second luffing oil cylinder are symmetrically arranged on both sides of the outer telescopic component. One end of the first luffing oil cylinder is hinged to the outer telescopic component, and the other end is hinged to the support assembly. One end of the second luffing oil cylinder is hinged to the outer telescopic component, and the other end is hinged to the support assembly.
[0015] According to the lifting device provided by the present utility model, it further includes a bracket. The bracket is arranged on the vehicle body and is located on the side of the support assembly facing the lifting assembly. The bracket is used for parking the lifting assembly.
[0016] According to the lifting device provided by the present utility model, it further includes a slewing assembly. The support assembly is arranged on the slewing assembly. The slewing assembly is used to drive the support assembly and the lifting assembly to perform slewing motion relative to the vehicle body.
[0017] According to the lifting device provided by the present utility model, the outer telescopic component includes one of a stainless steel outer telescopic component, a carbon steel outer telescopic component, and an aluminum alloy outer telescopic component; the inner telescopic component includes one of a stainless steel inner telescopic component, a carbon steel inner telescopic component, and an aluminum alloy inner telescopic component.
[0018] The fire truck provided by the present utility model includes the lifting device described in any one of the above.
[0019] The lifting device provided by the present utility model, by providing an inner telescopic component and an outer telescopic component that are nested inside and outside, and driving the two to perform synchronous telescoping through a telescopic driving member, in this way, the medium conveying space limited by the inner telescopic component and the outer telescopic component can be extended. Based on this, by using the luffing component to raise the elevation angle of the inner telescopic component and the outer telescopic component, the operating height of the fire cannon located at the end of the outer telescopic component can be greatly increased, and thus the fire extinguishing range can be expanded.
[0020] Compared with the prior art, the lifting device provided by the present utility model limits a medium conveying space through an inner telescopic member and an outer telescopic member which are nested inside each other, and the telescopic driving member is wrapped inside the medium conveying space by the inner telescopic member. In this way, the medium conveying space can be isolated from the telescopic driving member, thereby preventing the medium in the medium conveying space from penetrating into the inside of the telescopic driving member, and greatly improving the safety and service life of the telescopic driving member. In addition, compared with the external telescopic water pipe, the lifting device provided by the present utility model has a simple structure, can reduce the overall load of the fire truck, and reduce energy consumption; compared with the lifting device in the form of a telescopic arm or a truss structure that also requires an external water pipe, the lifting device provided by the present utility model can combine the functions of medium transportation and skeleton support. On the one hand, it can reduce weight and energy consumption, and on the other hand, it can also reduce the assembly difficulty and the manufacturing cost of the whole vehicle; compared with the method of only adjusting the working height through the luffing mechanism, the lifting device provided by the present utility model can greatly increase the working height of the fire cannon and expand the fire extinguishing coverage area of the fire cannon. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.
[0022] Figure 1 is a schematic diagram of the overall structure of a fire truck provided by an embodiment of the present utility model.
[0023] Figure 2 is a schematic diagram of the overall structure of the lifting device provided by an embodiment of the present utility model.
[0024] Figure 3 is a main sectional view of the lifting device provided by an embodiment of the present utility model.
[0025] Figure 4 is a schematic diagram of the lifting device provided by an embodiment of the present utility model in the maximum lifting state.
[0026] Figure 5 is Figure 3 a partially enlarged schematic diagram of the local structure at A in
[0027] Figure 6 is Figure 3 a partially enlarged schematic diagram of the local structure at B in
[0028] Figure 7 is Figure 3 a partially enlarged schematic diagram of the local structure at C in
[0029] Figure 8 is Figure 3 The enlarged schematic view of the local structure at position D in the figure.
[0030] Figure 9 is the layout schematic diagram of the installation part provided by the embodiment of the present utility model.
[0031] Reference numerals:
[0032] 10: Vehicle body; 20: Storage tank; 30: Fire cannon; 40: Lifting device;
[0033] 100: Support assembly; 200: Conveying assembly; 210: First conveying pipe; 220: Second conveying pipe;
[0034] 300: Lifting assembly; 310: Luffing component; 311: First luffing oil cylinder; 312: Second luffing oil cylinder; 320: Outer telescopic component; 321: First outer telescopic pipe; 322: Second outer telescopic pipe; 323: Partition; 330: Inner telescopic component; 331: First inner telescopic pipe; 332: Second inner telescopic pipe; 333: Installation part; 340: Telescopic driving part; 341: Cylinder barrel; 342: Piston rod; 343: Piston; 345: End cover; 350: Medium conveying space; 400: Bracket. Detailed implementation manners
[0035] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0036] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.
[0037] In the embodiments of the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.
[0038] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0039] Figure 1 is a schematic diagram of the overall structure of the fire truck provided by the embodiment of the present utility model; Figure 2 is a schematic diagram of the overall structure of the lifting device provided by the embodiment of the present utility model; Figure 3 is a main sectional view of the lifting device provided by the embodiment of the present utility model; Figure 4 is a schematic diagram of the lifting device in the maximum lifting state provided by the embodiment of the present utility model.
[0040] Refer to Figures 1 to 4 , a first aspect of the present utility model provides a lifting device 40, the lifting device 40 includes a support assembly 100, a conveying assembly 200, and a lifting assembly 300. The support assembly 100 is fixed to the upper surface of the vehicle body 10. The support assembly 100 and the vehicle body 10 can be fixedly connected by fasteners such as bolts or screws, or can be fixed by welding or other means. The conveying assembly 200 includes a first conveying pipe 210 and a second conveying pipe 220. Both the first conveying pipe 210 and the second conveying pipe 220 are communicated with the storage tank 20. Under the pumping action of the pump, the fire extinguishing medium (such as water, foam water, or dry powder) in the storage tank 20 can be pumped to the lifting assembly 300 through the first conveying pipe 210 and the second conveying pipe 220. In an alternative embodiment of the present utility model, the conveying assembly 200 may also only include one conveying pipe. Specifically, it can be adaptively set according to actual situations.
[0041] The elevating assembly 300 is provided on the support assembly 100, and the two are rotationally engaged. Among them, the elevating assembly 300 includes a luffing member 310, an outer telescopic member 320, an inner telescopic member 330, and a telescopic driving member 340. The telescopic driving member 340 is provided inside the inner telescopic member 330. The outer telescopic member 320 is sleeved outside the inner telescopic member 330, and the outer telescopic member 320 is located between the first delivery pipe 210 and the second delivery pipe 220. A medium delivery space 350 is defined between the outer telescopic member 320 and the inner telescopic member 330. One end of the medium delivery space 350 is communicated with the first delivery pipe 210 and the second delivery pipe 220, and the other end of the medium delivery space 350 is communicated with the fire monitor 30. During use, the fire extinguishing medium located in the storage tank 20 can be delivered to the fire monitor 30 through the first delivery pipe 210, the second delivery pipe 220, and the medium delivery space 350, so as to realize the fire extinguishing operation.
[0042] The inner telescopic member 330 and the outer telescopic member 320 can be synchronously telescoped under the drive of the telescopic driving member 340 to realize the extension of the medium delivery space 350. One end of the luffing member 310 is rotatably connected to the support assembly 100, and the other end is rotatably connected to the outer telescopic member 320. The luffing member 310 is used to control the pitching angle of the outer telescopic member 320 and the inner telescopic member 330.
[0043] Refer to Figures 1 to 4 , it can be understood that for the elevating device 40 provided by the embodiment of the present invention, by providing the inner telescopic member 330 and the outer telescopic member 320 which are nested inside and outside, and driving the two to be synchronously telescoped through the telescopic driving member 340, in this way, the medium delivery space 350 defined by the inner telescopic member 330 and the outer telescopic member 320 can be extended. Based on this, by raising the elevation angle of the inner telescopic member 330 and the outer telescopic member 320 through the luffing member 310, the operation height of the fire monitor 30 located at the end of the outer telescopic member 320 can be greatly increased, and thus the fire extinguishing range can be expanded.
[0044] Compared with the prior art, in the lifting device 40 provided by the embodiment of the present utility model, the inner telescopic member 330 and the outer telescopic member 320 which are nested inside and outside limit the medium conveying space 350, and the telescopic driving member 340 is wrapped inside the medium conveying space 350 by the inner telescopic member 330. In this way, the medium conveying space 350 can be isolated from the telescopic driving member 340, thereby preventing the medium in the medium conveying space 350 from infiltrating into the inside of the telescopic driving member 340, and greatly improving the safety and service life of the telescopic driving member 340. In addition, compared with the external telescopic water pipe, the lifting device 40 provided in this embodiment has a simple structure, can reduce the overall weight of the fire truck, and reduce energy consumption; compared with the telescopic arm form or the truss structure lifting device 40 that still requires an external water pipe, the lifting device 40 provided in this embodiment can combine the functions of medium transportation and skeleton support. On the one hand, it can reduce weight and energy consumption, and on the other hand, it can also reduce the assembly difficulty and the manufacturing cost of the whole vehicle; compared with the method of only adjusting the working height through the luffing mechanism, the lifting device 40 provided in this embodiment can greatly increase the working height of the fire cannon 30 and expand the fire extinguishing coverage area of the fire cannon 30.
[0045] Figure 5 is Figure 3 The enlarged schematic view of the partial structure at A in the figure; Figure 6 is Figure 3 The enlarged schematic view of the partial structure at B in the figure.
[0046] Refer to Figure 3 、 Figure 5 and Figure 6 In the optional embodiment of the present utility model, referring to Figure 3 , Figure 5 and Figure 6 , the outer telescopic member 320 includes an outer first telescopic pipe 321, an outer second telescopic pipe 322 and a partition 323. The outer first telescopic pipe 321 is sleeved outside the outer second telescopic pipe 322, and the two are slidably matched. In other words, the outer second telescopic pipe 322 can slide along the lumen of the outer first telescopic pipe 321. It should be noted that the inner wall of the outer first telescopic pipe 321 needs to be closely attached to the outer wall of the outer second telescopic pipe 322 to avoid medium leakage.
[0047] One end of the first outer telescopic pipe 321 is rotatably connected to the support assembly 100. One end of the second outer telescopic pipe 322 away from the first outer telescopic pipe 321 is connected to the fire monitor 30. In other words, the fire monitor 30 is arranged at one end of the second outer telescopic pipe 322 away from the support assembly 100. Two delivery ports are arranged on one side of the first outer telescopic pipe 321 close to the support assembly 100. The two delivery holes are symmetrically arranged on both sides of the first outer telescopic pipe 321. The first delivery pipe 210 and the second delivery pipe 220 are respectively communicated with the first outer telescopic pipe 321 through these two delivery ports, that is, communicated with the medium delivery space 350. A partition plate 323 is arranged on the side of the delivery port away from the second outer telescopic pipe 322. The partition plate 323 can divide the first outer telescopic pipe 321 into two non-communicating spaces. The space on the side of the partition plate 323 away from the second outer telescopic pipe 322 is used for laying hydraulic pipelines.
[0048] It can be understood that for the outer telescopic member 320 provided by the embodiment of the present invention, by arranging the first outer telescopic pipe 321 and the second outer telescopic pipe 322, based on the cooperation with the inner telescopic member 330, when the second outer telescopic pipe 322 extends out of the first outer telescopic pipe 321, the length of the medium delivery space 350 can be greatly extended. Further, with the assistance of the luffing member 310, the operating height of the fire monitor 30 can be greatly increased, and the fire extinguishing range can be expanded.
[0049] Figure 7 is Figure 3 The enlarged schematic view of the partial structure at C in the figure.
[0050] Refer to Figure 3 、 Figure 6 and Figure 7 In the optional embodiment of the present invention, the inner telescopic member 330 includes an inner first telescopic pipe 331, an inner second telescopic pipe 332 and at least one mounting member 333. The inner first telescopic pipe 331 is sleeved outside the inner second telescopic pipe 332, and the two are in sliding fit. One end of the inner first telescopic pipe 331 away from the inner second telescopic pipe 332 is fixed to the partition plate 323. One end of the inner second telescopic pipe 332 away from the inner first telescopic pipe 331 is fixedly connected to the second outer telescopic pipe 322 through the mounting member 333.
[0051] In this way, when the inner second telescopic tube 332 moves along the lumen of the inner first telescopic tube 331, the outer second telescopic tube 322 will move in the same direction as the inner second telescopic tube 332, so as to realize the extension of the medium conveying space 350. In addition, it can be understood that since the inner first telescopic tube 331 is fixed to the partition plate 323, the spaces inside the inner first telescopic tube 331 and the inner second telescopic tube 332 can be separated from the medium conveying space 350. Thus, the telescopic driving member 340 located inside the inner first telescopic tube 331 and the inner second telescopic tube 332 can be completely isolated from the medium in the ring conveying space, which can greatly improve the safety and service life of the telescopic driving member 340.
[0052] Figure 8 Yes Figure 3 The enlarged schematic view of the partial structure at D in the figure.
[0053] Refer to Figure 6 and Figure 8 In the optional embodiment of the present invention, referring to FIGS. and, the telescopic driving member 340 includes a cylinder barrel 341, a piston rod 342, a piston 343 and an end cover 345. The end cover 345 is arranged at the opening of the cylinder barrel 341. The piston 343 is arranged inside the cylinder barrel 341 and is slidably matched with the cylinder barrel 341. One end of the piston rod 342 is fixedly connected to the piston 343, and the other end passes through the end cover 345 and the partition plate 323 and is fixed to the end of the outer first telescopic tube 321 away from the outer second telescopic tube 322. In other words, it is fixed to the bottom of the outer first telescopic tube 321. The bottom of the cylinder barrel 341 (i.e., the end of the cylinder barrel 341 away from the end cover 345) is fixed to one end of the inner second telescopic tube 332 facing the fire monitor 30. It can be understood that such an "inverted" layout method can, on the one hand, facilitate the layout of the hydraulic pipeline. On the other hand, during the lifting process of the lifting device, the load is relatively large. Compared with the contact area between the piston rod 342 and the inner second telescopic tube 332 in the "upright" type, the contact area between the cylinder barrel 341 and the inner second telescopic tube 332 in the "inverted" type is larger, so that it can bear a greater load and can improve the driving strength and stability of the telescopic driving member 340.
[0054] Figure 9 It is the layout schematic diagram of the mounting member provided by the embodiment of the present invention.
[0055] Refer to Figure 3 and Figure 9, in an alternative embodiment of the present utility model, a plurality of mounting members 333 are provided. The plurality of mounting members 333 are evenly spaced along the circumferential direction of the inner second telescopic tube 332 and are disposed between the inner second telescopic tube 332 and the outer second telescopic tube 322. It can be understood that such an arrangement can improve the firmness of the connection between the inner second telescopic tube 332 and the outer second telescopic tube 322, and is beneficial to the smoothness of the outer second telescopic tube 322 during the synchronous telescopic process with the inner second telescopic tube 332. In an alternative embodiment of the present utility model, to avoid interference between the mounting member 333 and the medium flow, the mounting member 333 can also be adaptively adjusted according to the actual situation. It should be noted that the mounting member 333 can be a rod-shaped member or a plate-shaped member, and specifically, it can be adaptively selected according to the actual situation.
[0056] Continue to refer to Figure 2 , in an alternative embodiment of the present utility model, the luffing member 310 includes a first luffing oil cylinder 311 and a second luffing oil cylinder 312. The first luffing oil cylinder 311 and the second luffing oil cylinder 312 are symmetrically disposed on both sides of the outer telescopic member 320, that is, symmetrically disposed on both sides of the outer first telescopic tube 321. One end of the first luffing oil cylinder 311 is hinged to the outer telescopic member 320, and the other end is hinged to the support assembly 100. Similarly, one end of the second luffing oil cylinder 312 is hinged to the outer telescopic member 320, and the other end is hinged to the support assembly 100. In this way, when it is necessary to raise the working height of the fire cannon 30, by presetting a control command or a controller to control the first luffing oil cylinder 311 and the second luffing oil cylinder 312 to raise the outer first telescopic tube 321, the adjustment of the working height of the fire cannon 30 can be achieved. In an alternative embodiment of the present utility model, the luffing member 310 can also include only one luffing oil cylinder, and specifically, it can be adaptively selected according to the actual situation.
[0057] Continue to refer to Figure 2 , in an alternative embodiment of the present utility model, the lifting device 40 further includes a bracket 400. The bracket 400 is fixed to the upper surface of the vehicle body 10 and is located on the side of the support assembly 100 facing the lifting assembly 300. It can be understood that when the lifting assembly 300 does not need to operate, the lifting assembly 300 can be placed on the bracket 400. In this way, during the operation of the fire truck, the stability of the lifting assembly 300 can be ensured. In addition, the bracket 400 can provide a certain initial elevation angle for the lifting assembly 300 to facilitate the lifting operation of the luffing member 310.
[0058] In an alternative embodiment of the present utility model, the lifting device 40 further includes a slewing assembly. The slewing assembly is disposed on the vehicle body 10, and the support assembly 100 is disposed on the slewing assembly. The slewing assembly may specifically adopt existing components such as a slewing platform. The slewing assembly is used to drive the support assembly 100 and the lifting device 40 to slewing relative to the vehicle body 10, so as to adjust the fire extinguishing direction of the fire monitor 30. Whether the slewing assembly is in a symmetric slewing form or a full slewing form can be adaptively selected according to the actual situation.
[0059] In an alternative embodiment of the present utility model, the outer telescopic member 320 includes a stainless steel outer telescopic member, an aluminum alloy outer telescopic member or a carbon steel outer telescopic member. It can be understood that the aluminum alloy material, stainless steel material and carbon steel material are of relatively light weight. By manufacturing the outer telescopic member 320 with the aluminum alloy material, stainless steel material or carbon steel material, the weight of the outer telescopic member 320 can be greatly reduced, which is beneficial to the overall light weight of the lifting device 40. In an alternative embodiment of the present utility model, similar to the foregoing embodiment, the inner telescopic member 330 may include an aluminum alloy inner telescopic member, a stainless steel inner telescopic member or a carbon steel inner telescopic member. It can be understood that the aluminum alloy material, stainless steel material and carbon steel material are of relatively light weight. By manufacturing the inner telescopic member 330 with the aluminum alloy material, stainless steel material or carbon steel material, the weight of the inner telescopic member 330 can be greatly reduced, which is also beneficial to the overall light weight of the lifting device 40.
[0060] Referring to Figure 1 , a second aspect of the embodiments of the present utility model provides a fire truck, which includes a vehicle body 10, a storage tank 20, a fire monitor 30 and the lifting device 40 according to any one of the foregoing embodiments. Specifically, the connection relationship and positional relationship among the vehicle body 10, the storage tank 20, the fire monitor 30 and the lifting device 40 are as described in the foregoing, and will not be elaborated herein. It can be understood that the fire truck provided in this embodiment also has the beneficial effects of the lifting device 40 according to any one of the foregoing embodiments because it includes the lifting device 40 according to any one of the foregoing embodiments. For a detailed description of the effects, please refer to the foregoing.
[0061] It should be noted that the technical solutions in the various embodiments of the present utility model can be combined with each other, but the basis for the combination is that those skilled in the art can implement it. When the combination of the technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist, that is, it does not belong to the protection scope of the present utility model.
[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A lifting device, characterized in that: include: A support assembly is provided on the vehicle body; A conveying assembly, connected to the storage tank, for conveying the fire extinguishing medium; A lifting component is rotatably disposed on the supporting component, and the lifting component includes a variable amplitude component, an outer telescopic component, an inner telescopic component and a telescopic driving component. The telescopic driving component is disposed inside the inner telescopic component, and the outer telescopic component is sleeved on the outside of the inner telescopic component. A medium conveying space is limited between the inner telescopic component and the outer telescopic component. One end of the medium conveying space is connected to the conveying component, and the other end is connected to the fire cannon. The inner telescopic component and the outer telescopic component are suitable for synchronous extension and retraction under the drive of the telescopic driving component; one end of the variable amplitude component is rotatably connected to the supporting component, and the other end is rotatably connected to the outer telescopic component.
2. The lifting device according to claim 1, characterized in that: The outer telescopic component includes an outer first telescopic tube, an outer second telescopic tube and a partition. The outer first telescopic tube is sleeved on the outside of the outer second telescopic tube and slidably cooperates with the outer second telescopic tube. The outer first telescopic tube is rotatably connected to the support assembly. The end of the outer second telescopic tube away from the outer first telescopic tube is connected to the fire cannon. The outer first telescopic tube is provided with a delivery port connected to the delivery assembly. The partition is arranged on the side of the delivery port away from the outer second telescopic tube.
3. The lifting device according to claim 2, characterized in that: The inner telescopic component includes an inner first telescopic tube, an inner second telescopic tube and at least one mounting component. The inner first telescopic tube is sleeved on the outer side of the inner second telescopic tube and slidably cooperates with the inner second telescopic tube. One end of the inner first telescopic tube away from the inner second telescopic tube is fixed to the partition, and one end of the inner second telescopic tube away from the inner first telescopic tube is fixedly connected to the outer second telescopic tube via the mounting component.
4. The lifting device according to claim 3, characterized in that: The telescopic drive component includes a cylinder, a piston rod, a piston and an end cover. The end cover is arranged at the opening of the cylinder. The piston is arranged in the cylinder and slidably cooperates with the cylinder. One end of the piston rod is connected to the piston, and the other end is fixed to the outer first telescopic tube after passing through the end cover and the partition. The bottom of the cylinder is fixed to the inner second telescopic tube.
5. The lifting device according to claim 3, characterized in that: There are a plurality of mounting members, and the plurality of mounting members are evenly spaced and arranged between the inner second telescopic tube and the outer second telescopic tube along the circumferential direction of the inner second telescopic tube.
6. The lifting device according to any one of claims 1 to 5, characterized in that: The luffing component includes a first luffing cylinder and a second luffing cylinder, which are symmetrically arranged on both sides of the outer telescopic component. One end of the first luffing cylinder is hinged to the outer telescopic component, and the other end is hinged to the supporting assembly. One end of the second luffing cylinder is hinged to the outer telescopic component, and the other end is hinged to the supporting assembly.
7. The lifting device according to any one of claims 1 to 5, characterized in that: It also includes a bracket, which is arranged on the vehicle body and located on a side of the support assembly facing the lifting assembly, and the bracket is used to park the lifting assembly.
8. The lifting device according to any one of claims 1 to 5, characterized in that: It also includes a rotating assembly, the support assembly is arranged on the rotating assembly, and the rotating assembly is used to drive the support assembly and the lifting assembly to perform a rotating motion relative to the vehicle body.
9. The lifting device according to claim 1, characterized in that: The outer telescopic component includes one of a stainless steel outer telescopic component, a carbon steel outer telescopic component and an aluminum alloy outer telescopic component; the inner telescopic component includes one of a stainless steel inner telescopic component, a carbon steel inner telescopic component and an aluminum alloy inner telescopic component.
10. A fire truck, characterized in that: A lifting device comprising any one of claims 1 to 9.