Fire truck horizontal outrigger and fire truck

Abstract

The application provides a fire truck horizontal support leg and a fire truck, and relates to the technical field of vehicles.The fire truck horizontal support leg comprises a fixed support leg, a transmission assembly, a driving source and a plurality of telescopic support legs, the plurality of telescopic support legs are slidably arranged in the fixed support leg, and the plurality of telescopic support legs are arranged in a sleeved mode; the transmission assembly is arranged at least partially outside the plurality of telescopic support legs; the driving source is arranged outside the fixed support leg, an output end of the driving source is in transmission connection with the transmission assembly, and the driving source drives the plurality of telescopic support legs to move synchronously along the axial direction of the fixed support leg through the transmission assembly. The transmission assembly is arranged outside the telescopic support legs, and when maintenance is performed, the transmission assembly is exposed only by extending the telescopic support leg, so that the parts can be conveniently replaced without disassembling the telescopic support leg.

Description

Technical Field

[0001] This invention generally relates to the field of vehicle technology, and more specifically, to a horizontal outrigger for a fire truck and a fire truck. Background Technology

[0002] As a special vehicle for firefighting, the main moving parts of a fire truck when it is dismounted are the horizontal outriggers and the vertical outriggers. The vertical outriggers are mainly responsible for supporting the static load of the entire vehicle after it is dismounted and leveled. The horizontal outriggers are used to increase the lateral span, thereby increasing the working range of the boom and achieving better firefighting results.

[0003] Existing horizontal outriggers primarily extend laterally using hydraulic cylinders. Because hydraulic cylinders are heavy, this increases the overall vehicle weight. Furthermore, the drive mechanism typically only powers one boom section or one stage of the telescopic outrigger, resulting in poor synchronization. Additionally, the hydraulic cylinders and related transmission components are located inside the horizontal outrigger, requiring disassembly of the outrigger for maintenance, thus increasing maintenance costs. Summary of the Invention

[0004] The present invention provides a fire truck horizontal outrigger and a fire truck, which have good telescopic synchronization and are easy to maintain.

[0005] According to a first aspect of the present invention, a horizontal outrigger for a fire truck is provided, comprising a fixed outrigger, a plurality of telescopic outriggers, a transmission assembly, and a drive source; the plurality of telescopic outriggers are slidably disposed within the fixed outrigger, and the plurality of telescopic outriggers are nested together; the transmission assembly is at least partially disposed correspondingly to the outside of the plurality of telescopic outriggers; the drive source is disposed outside the fixed outrigger, the drive source is perpendicular to the axial direction of the fixed outrigger, the output end of the drive source is drively connected to the transmission assembly, and the drive source drives the plurality of telescopic outriggers to move synchronously along the axial direction of the fixed outrigger through the transmission assembly.

[0006] In some embodiments, the transmission assembly includes: multiple racks, a transmission element, a drive gear set, and multiple driven gear sets. The multiple racks are correspondingly disposed outside the multiple telescopic outriggers, and the racks are arranged parallel to the axial direction of the fixed outriggers. The drive gear set is disposed at the output end of the drive source, and the drive gear set meshes with the racks corresponding to the drive gear set. The multiple driven gear sets are correspondingly disposed outside the multiple telescopic outriggers. The transmission element is disposed between the drive gear set and the driven gear set adjacent to the drive gear set, and between two adjacent driven gear sets. The drive source drives the drive gear set to rotate, causing the transmission element and the driven gear sets to drive the multiple telescopic outriggers to move via the racks.

[0007] In some embodiments, the drive gear set includes: a drive gear and a synchronizing gear. The drive gear is disposed at the output end of the drive source, and the drive gear meshes with the rack corresponding to the drive gear. The synchronizing gear is coaxially disposed with the drive gear, and the transmission member is respectively sleeved on the outside of the synchronizing gear and the outside of the driven gear adjacent to the drive gear set.

[0008] In some embodiments, the driven gear set includes a first driving wheel, a driven gear, and a second driving wheel. The transmission member is respectively sleeved on the outside of the synchronous gear and the outside of the first driving wheel. The driven gear is coaxially arranged with the first driving wheel, and the driven gear meshes with the rack corresponding to the driven gear. The second driving wheel is coaxially arranged with the first driving wheel, and the driven gear is disposed between the first driving wheel and the second driving wheel. The transmission member is respectively sleeved on the outside of the second driving wheel and the outside of the first driving wheel adjacent to the driven gear set.

[0009] In some embodiments, the transmission assembly further includes a tension wheel, which is rotatably disposed relative to the telescopic outrigger. The transmission component is sleeved outside the tension wheel and along the axial direction of the fixed outrigger. The position of the tension wheel relative to the telescopic outrigger is adjustable to adjust the tension of the transmission component.

[0010] In some embodiments, the telescopic outrigger includes: a structural member, a connecting bend, a pin, and a tension adjusting member; the structural member is connected to the rack; the connecting bend is sleeved on the outside of one end of the structural member along the axial direction of the fixed outrigger; the pin passes through the tensioning wheel and the connecting bend; along the axial direction of the fixed outrigger, the tension adjusting member passes through the connecting bend and can abut against the structural member.

[0011] In some embodiments, the horizontal outrigger of the fire truck further includes: a guide, a limiting member, and a gap adjusting member. The guide is disposed between the fixed outrigger and an adjacent telescopic outrigger, and between two adjacent telescopic outriggers, in a direction perpendicular to the axial direction of the fixed outrigger, for guiding the telescopic outrigger. The limiting member is disposed between the fixed outrigger and an adjacent telescopic outrigger, and between two adjacent telescopic outriggers, in the axial direction of the fixed outrigger, for limiting the fixed outrigger and the telescopic outrigger. The gap adjusting member passes through the fixed outrigger or the telescopic outrigger and abuts against the limiting member, for adjusting the gap between the limiting member and the telescopic outrigger.

[0012] In some embodiments, the horizontal outriggers of the fire truck further include: a cable chain, pipes, and fasteners; the cable chain is disposed within the fixed outrigger; the pipes are connected to the cable chain and pass through multiple telescopic outriggers; and the fasteners are disposed within the telescopic outriggers for fixing the pipes.

[0013] In some embodiments, the pipeline includes a main pipeline, a first bend pipeline, a second bend pipeline, and multiple secondary pipelines. The multiple secondary pipelines are correspondingly disposed within multiple telescopic outriggers. The main pipeline is connected to the cable chain. The main pipeline is connected to one end of a secondary pipeline adjacent to the main pipeline via the first bend pipeline. The other end of the secondary pipeline is connected to a secondary pipeline adjacent to the secondary pipeline via the second bend pipeline, such that there is a height difference between the two secondary pipelines connected to the second bend pipeline.

[0014] In some embodiments, an installation gap is provided between two adjacent telescopic outriggers, and the transmission assembly is disposed within the installation gap, which is 66mm to 70mm.

[0015] According to a second aspect of the present invention, an embodiment of the present invention also provides a fire truck, including the aforementioned fire truck horizontal outriggers.

[0016] One embodiment of the present invention has the following advantages or beneficial effects:

[0017] The fire truck horizontal outriggers and fire truck provided in this invention have a drive source that drives multiple telescopic outriggers to move synchronously along the axial direction of the fixed outriggers via a transmission assembly. This enables multi-stage synchronous telescopic movement. The transmission assembly and the multiple telescopic outriggers are correspondingly arranged, and the transmission assembly and the telescopic outriggers can be added or removed simultaneously to achieve one or more stages of telescopic movement. The transmission assembly is located on the outside of the telescopic outriggers, so it is exposed when the outriggers are extended during maintenance, facilitating the replacement of parts without disassembling the outriggers. In addition, the drive source adopts a vertical structure and is located on the outside of the fixed outriggers, without occupying the internal space of the fixed outriggers, allowing for flexible adjustment of the internal space layout of the fixed outriggers. Attached Figure Description

[0018] To better understand the present invention, reference may be made to the embodiments shown in the following drawings. Components in the drawings are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of the invention. Furthermore, related elements or components may have different arrangements as known in the art. Additionally, in the drawings, the same reference numerals denote the same or similar components in various figures. The above and other features and advantages of the present invention will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0019] in:

[0020] Figure 1 The image shown is a front view of a fire truck's horizontal outriggers when extended, according to an embodiment of the present invention.

[0021] Figure 2 The figure shown is a top view of a fire truck's horizontal outriggers when extended, according to an embodiment of the present invention.

[0022] Figure 3 The figure shown is a side view of a fire truck's horizontal outriggers when retracted, according to an embodiment of the present invention.

[0023] Figure 4 The diagram shown is a structural schematic of the drive gear set and driven gear set in the horizontal outrigger of a fire truck according to an embodiment of the present invention;

[0024] Figure 5 The image shown is a top view of the drive gear assembly in the horizontal outrigger of a fire truck according to an embodiment of the present invention.

[0025] Figure 6 The diagram shown is a schematic of a fire truck horizontal outrigger display tension wheel according to an embodiment of the present invention;

[0026] Figure 7 The diagram shown is a schematic representation of a fire truck horizontal outrigger display guide, limiting member, and clearance adjusting member according to an embodiment of the present invention.

[0027] Figure 8 The diagram shown is a front view of the piping of a fire truck's horizontal outriggers when extended, according to an embodiment of the present invention.

[0028] Figure 9 The diagram shown is a top view of the piping of a fire truck's horizontal outriggers when extended, according to an embodiment of the present invention.

[0029] Figure 10 The diagram shows a side view of the piping of a fire truck's horizontal outriggers when they are retracted, according to an embodiment of the present invention.

[0030] The reference numerals in the attached figures are explained as follows:

[0031] 1. Fixed outrigger; 2. Telescopic outrigger; 3. Transmission assembly; 4. Drive source; 5. Guide component; 6. Limiting component; 7. Gap adjustment component; 8. Cable chain; 9. Piping; 10. Fixing component; 11. Guide wheel;

[0032] 21. Primary telescopic outrigger; 22. Secondary telescopic outrigger; 23. Tertiary telescopic outrigger;

[0033] 201. Structural component; 202. Connecting bend plate; 203. Pin; 204. Tensioning adjustment component;

[0034] 31. Gear rack; 311. Primary gear rack; 312. Secondary gear rack; 313. Tertiary gear rack;

[0035] 32. Drive gear set; 321. Drive gear; 322. Synchronizing gear;

[0036] 33. Driven gear set; 331. First driving wheel; 332. Driven gear; 333. Second driving wheel;

[0037] 34. Transmission components; 341. Primary transmission components; 342. Secondary transmission components;

[0038] 35. Tensioner;

[0039] 61. Horizontal part; 62. Vertical part;

[0040] 91. Main pipeline; 92. First bend pipeline; 93. Second bend pipeline; 94. Secondary pipeline; 941. Primary secondary pipeline; 942. Secondary secondary pipeline; 943. Tertiary secondary pipeline. Detailed Implementation

[0041] The technical solutions of the exemplary embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of the present invention.

[0042] In the description of this invention, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more; and the term "and / or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the / described" object or "an" object are also intended to indicate one of a possible plurality of such objects.

[0043] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] Furthermore, in the description of this invention, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this invention. It should also be understood that, in the context of an element or feature being connected to another element (one or more) "upper," "lower," "inner," or "outer," it can be directly connected to the other element (one or more) "upper," "lower," "inner," or "outer," or indirectly connected to the other element (one or more) "upper," "lower," "inner," or "outer" through an intermediate element.

[0045] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0046] This embodiment provides a horizontal outrigger for a fire truck, applicable to the field of fire truck technology. For example... Figures 1-3 As shown, the horizontal outriggers of the fire truck include a fixed outrigger 1, a transmission assembly 3, a drive source 4, and multiple telescopic outriggers 2. The multiple telescopic outriggers 2 are slidably disposed within the fixed outrigger 1 and are nested together. The transmission assembly 3 is at least partially disposed on the outside of the multiple telescopic outriggers 2. The drive source 4 is disposed on the outside of the fixed outrigger 1 and is perpendicular to the axial direction of the fixed outrigger 1. The output end of the drive source 4 is connected to the transmission assembly 3. The drive source 4 drives the multiple telescopic outriggers 2 to move synchronously along the axial direction of the fixed outrigger 1 through the transmission assembly 3.

[0047] The fire truck horizontal outriggers provided in this embodiment use a drive source 4 to drive multiple telescopic outriggers 2 to move synchronously along the axial direction of the fixed outrigger 1 via a transmission assembly 3. This enables multi-stage synchronous telescopic movement. The transmission assembly 3 and the multiple telescopic outriggers 2 are correspondingly arranged, and the transmission assembly 3 and the telescopic outriggers 2 can be added or removed simultaneously to achieve one or fewer stages of telescopic movement. This is achieved by adding or removing driven gears and corresponding chains (transmission components) and racks, offering great design flexibility. The transmission assembly 3 is located on the outside of the telescopic outriggers 2. During maintenance, simply extending the telescopic outrigger 2 exposes the transmission assembly 3, facilitating component replacement without disassembling the telescopic outriggers 2. Furthermore, the drive source 4 adopts a vertical structure and is located on the outside of the fixed outrigger 1, not occupying the internal space of the fixed outrigger 1, allowing for flexible adjustment of the internal space layout of the fixed outrigger 1. Additionally, the drive source 4 is located on the lower side of the fixed outrigger 1, further facilitating future maintenance and repair.

[0048] Specifically, this embodiment takes three telescopic outriggers 2 as an example. The three telescopic outriggers 2 are a primary telescopic outrigger 21, a secondary telescopic outrigger 22, and a tertiary telescopic outrigger 23, which are nested together sequentially. Specifically, the primary telescopic outrigger 21 is disposed within the fixed outrigger 1 and slides with it to achieve primary synchronous telescopic extension and retraction. The secondary telescopic outrigger 22 is disposed within the primary telescopic outrigger 21 and slides with it to achieve secondary synchronous telescopic extension and retraction. The tertiary telescopic outrigger 23 is disposed within the secondary telescopic outrigger 22 and slides with it to achieve tertiary synchronous telescopic extension and retraction.

[0049] In one embodiment, the drive source 4 is placed vertically and installed on the lower side of the fixed outrigger 1. The drive source 4 can be a hydraulic motor. Compared with the hydraulic cylinder used in the prior art, the drive weight of the hydraulic motor is reduced, which reduces the overall weight of the entire horizontal outrigger of the fire truck. While meeting the requirements of lightweighting, the reduced weight can also be added to the water tank to achieve more meaningful design requirements.

[0050] In one embodiment, an installation gap of 66mm to 70mm is provided between two adjacent telescopic outriggers 2. For example, the installation gap is 66mm, 68mm, 70mm, etc. The installation gap is relatively small, resulting in a compact layout and saving floor space compared with the prior art. The transmission component 3 is disposed within the installation gap, that is, the transmission component 3 can be installed in the relatively narrow space under the telescopic outrigger 2, making full use of space and optimizing the layout.

[0051] In one embodiment, such as Figures 1-4 As shown, the transmission assembly 3 includes a drive gear set 32, a transmission component 34, multiple racks 31, and multiple driven gear sets 33. The drive gear set 32 ​​is located at the output end of the drive source 4, and meshes with the racks 31 corresponding to the drive gear set 32. Multiple racks 31 are correspondingly located on the outside of multiple telescopic legs 2, and are arranged parallel to the axial direction of the fixed legs 1, with the racks 31 arranged laterally. Multiple driven gear sets 33 are correspondingly located on the outside of multiple telescopic legs 2. The transmission component 34 is located between the drive gear set 32 ​​and the driven gear set 33 adjacent to the drive gear set 32, and between two adjacent driven gear sets 33.

[0052] Driven by the drive source 4, the drive gear set 32 ​​rotates, and the transmission component 34 and the driven gear set 33 drive the multiple telescopic outriggers 2 to move through multiple racks 31. When the drive source 4 rotates in the forward direction, the telescopic outriggers 2 extend; when the drive source 4 rotates in the reverse direction, the telescopic outriggers 2 retract. Through the coordinated action of the drive gear set 32, racks 31, transmission component 34, and multiple driven gear sets 33, the multiple telescopic outriggers 2 can extend and retract synchronously, providing stepless speed regulation and ensuring the stability and reliability of the fire truck's horizontal outriggers. Furthermore, by adding or removing the driven gear set 33 and the corresponding transmission component and rack 31, one more or fewer stages of extension / retraction can be achieved, offering great design flexibility.

[0053] Specifically, this embodiment provides three racks 31, namely a primary rack 311, a secondary rack 312, and a tertiary rack 313. The primary rack 311 is located at the lower part of the primary telescopic support leg 21, the secondary rack 312 is located at the lower part of the secondary telescopic support leg 22, and the tertiary rack 313 is located at the lower part of the tertiary telescopic support leg 23. The transmission component 34 can be a transmission belt, transmission chain, etc., and the transmission component 34 is respectively a primary transmission component 341 and a secondary transmission component 342. The drive gear set 32 ​​can be referred to as the primary gear, and the two driven gear sets 33 are the secondary gear and the tertiary gear, respectively.

[0054] Because the drive source 4 is vertically positioned, the transmission assembly 3 and the drive source 4 are arranged together on the underside of the fixed support leg 1, which facilitates later maintenance and repair. The vertically positioned drive source 4 allows the drive gear set 32 ​​to rotate in the horizontal plane. The drive gear set 32 ​​meshes with the first-stage rack 311 to form a first-stage transmission. As the drive gear set 32 ​​rotates, the first-stage telescopic support leg 21 is driven to extend and retract through the first-stage rack 311, realizing the first-stage extension and retraction process. At the same time, the first-stage transmission component 341 is wound between the drive gear set 32 ​​and the second-stage gear. Under the driving action of the drive source 4, the first-stage transmission component 341 can also drive the second-stage gear to rotate. At this time, the second-stage gear is the driving wheel of the second-stage telescopic transmission. The second-stage gear meshes with the second-stage rack 312. As the second-stage gear rotates, it drives the second-stage rack 312 to move, thereby driving the extension and retraction of the second-stage telescopic support leg 22 to realize the second-stage extension and retraction process. Similarly, the second-stage gear also drives the movement of the second-stage transmission component 342 and the rotation of the third-stage gear. The third-stage gear meshes with the third-stage rack 313. As the third-stage gear rotates, it drives the movement of the third-stage rack 313, thereby driving the extension and retraction of the third-stage telescopic support leg 23 to achieve the three-stage extension and retraction process.

[0055] It is understandable that the first-stage gear, second-stage gear, and third-stage gear can mesh with the rack 31 using spur gears or helical gears to reduce impact wear and improve transmission reliability.

[0056] In one embodiment, such as Figures 4-5 As shown, the drive gear set 32 ​​includes a drive gear 321 and a synchronizing gear 322. The drive gear 321 is located at the output end of the drive source 4, and meshes with a rack 31 corresponding to the drive gear 321. The synchronizing gear 322 is coaxially arranged with the drive gear 321, and the transmission member 34 is respectively sleeved on the outside of the synchronizing gear 322 and the outside of the driven gear 332 adjacent to the drive gear set 32.

[0057] The drive gear set 32 ​​has a drive gear 321 and a synchronizing gear 322 arranged vertically, i.e., the drive gear set 32 ​​has a double-layer gear structure. The lower drive gear 321 meshes with the first-stage rack 311 to drive the extension and retraction of the first-stage telescopic outrigger 21. The upper synchronizing gear 322 drives the second-stage gear to rotate through the first-stage transmission member 341, which in turn drives the extension and retraction of the second-stage telescopic outrigger 22 through the second-stage rack 312. In this way, not only can the extension and retraction of the first-stage telescopic outrigger 21 be directly realized, but power can also be transmitted to the second-stage transmission. The direct drive of the drive gear 321 and the power transmission function of the synchronizing gear 322 do not interfere with each other.

[0058] Specifically, the drive gear 321 and the synchronizing gear 322 are connected by a sleeve connection. The synchronizing gear 322 is sleeved on the outside of the drive gear 321. The synchronizing gear 322 can be called the external gear, and the drive gear 321 can be called the internal gear. Screws are inserted through the drive gear 321 and the synchronizing gear 322 for fixing the drive gear 321 and the synchronizing gear 322. Alternatively, the synchronizing gear 322 can be connected by heat fitting or the drive gear 321 can be connected by low-temperature cold fitting.

[0059] In one embodiment, such as Figure 4 As shown, the driven gear set 33 includes a first driving wheel 331, a driven gear 332, and a second driving wheel 333. The transmission member 34 is respectively sleeved on the outside of the synchronous gear 322 and the outside of the first driving wheel 331. The driven gear 332 is coaxially arranged with the first driving wheel 331, and the driven gear 332 meshes with the rack 31 corresponding to the driven gear 332. The second driving wheel 333 is coaxially arranged with the first driving wheel 331, and the driven gear 332 is arranged between the first driving wheel 331 and the second driving wheel 333. The transmission member 34 is respectively sleeved on the outside of the second driving wheel 333 and the outside of the first driving wheel 331 adjacent to the driven gear set 33.

[0060] The driven gear set 33 has a first driving wheel 331, a driven gear 332, and a second driving wheel 333 arranged vertically. That is, the drive gear set 32 ​​has a three-layer gear structure. A first-stage transmission member 341 is wound around the outside of the synchronous gear 322 and the first driving wheel 331 located at the bottom layer to transmit power to the second-stage transmission. The driven gear 332 in the middle layer meshes with the second-stage rack 312 to drive the extension and retraction of the second-stage telescopic outrigger 22. The second driving wheel 333 in the upper layer drives the third-stage gear to rotate through the second-stage transmission member 342, thereby driving the extension and retraction of the third-stage telescopic outrigger 23 through the third-stage rack 313. In this way, after transmitting power to the second stage, the extension and retraction of the second-stage telescopic outrigger 22 is directly achieved, and then the power is transmitted to the third-stage transmission. The direct drive of the driven gear 332, the power transmission of the first driving wheel 331, and the power transmission of the second driving wheel 333 do not interfere with each other.

[0061] If the tension of the transmission component 34 affects the transmission effect during the transmission process, then... Figure 6 As shown, the transmission assembly 3 also includes a tension wheel 35, which is rotatably arranged relative to the telescopic outrigger 2. The transmission component 34 is sleeved on the outside of the tension wheel 35. Along the axial direction of the fixed outrigger 1, the position of the tension wheel 35 relative to the telescopic outrigger 2 is adjustable to adjust the tension of the transmission component 34.

[0062] In this manner, if the tensioning wheel 35 moves away from the transmission component 34, the transmission component 34 is kept in a tensioned state; if the tensioning wheel 35 moves closer to the transmission component 34, the transmission component 34 is kept in a relaxed state. Since the position of the tensioning wheel 35 is not fixed but movable, the tension of the transmission component 34 can be adjusted by adjusting the position of the tensioning wheel 35.

[0063] Specifically, such as Figure 6 As shown, the telescopic outrigger 2 includes a structural component 201 and a connecting bend plate 202. Along the axial direction of the fixed outrigger 1, the connecting bend plate 202 is sleeved on the outside of one end of the structural component 201. The connecting bend plate 202 serves to wrap around the end of the structural component 201. The structural component 201 is connected to the rack 31 and provides an installation position for the rack 31. The structural component 201 is the main component of the telescopic outrigger 2.

[0064] For example, the telescopic outrigger 2 also includes a pin 203 and a tension adjustment member 204. The pin 203 passes through the tension wheel 35 and the connecting bend plate 202, and provides a rotation center for the tension wheel 35. Along the axial direction of the fixed outrigger 1, the tension adjustment member 204 passes through the connecting bend plate 202 and can abut against the structural member 201. The tension adjusting component 204 can be an adjusting bolt. The outer wall of the tension adjusting component 204 is provided with external threads, and the connecting bent plate 202 is provided with threaded holes. The tension adjusting component 204 passes through the threaded holes. If the transmission component 34 is relatively loose, when the tension adjusting component 204 is screwed towards the structural component 201 and abuts against the outer wall of the structural component 201, the external thread of the tension adjusting component 204 and the threaded hole of the connecting bent plate 202 cooperate. The connecting bent plate 202 drives the tensioning wheel 35 to move away from the structural component 201 through the pin 203, that is, the tensioning wheel 35 moves outward, thereby ensuring that the transmission component 34 is in a tightened state.

[0065] In one embodiment, such as Figure 7 As shown, the horizontal outrigger of the fire truck also includes a guide 5. The guide 5 is disposed between the fixed outrigger 1 and the telescopic outrigger 2 adjacent to the fixed outrigger 1 and between two adjacent telescopic outriggers 2 in a direction perpendicular to the axial direction of the fixed outrigger 1, for guiding the telescopic outrigger 2.

[0066] The guide 5 is located on the side wall of the telescopic outrigger 2. The guide 5 can also be called a side slider. The guide 5 provides good guidance for the telescopic outrigger 2 to extend and retract, so as to ensure the smooth movement of the telescopic outrigger 2 during the extension and retraction process.

[0067] In one embodiment, such as Figure 7 As shown, the horizontal outrigger of the fire truck also includes a limiting member 6. Along the axial direction of the fixed outrigger 1, the limiting member 6 is disposed between the fixed outrigger 1 and the telescopic outrigger 2 adjacent to the fixed outrigger 1, and between two adjacent telescopic outriggers 2, for limiting the fixed outrigger 1 and the telescopic outrigger 2. The limiting member 6 provides a good limiting effect for the extension and retraction of the telescopic outrigger 2, preventing the telescopic outrigger 2 from coming off during the extension and retraction process.

[0068] Specifically, the limiting member 6 includes a horizontal part 61 and a vertical part 62. The horizontal part 61 is located at the bottom of the telescopic leg 2 and can also be called a sliding block. The top surface of the horizontal part 61 is in contact with the telescopic leg 2, and the horizontal part 61 guides the extension and retraction of the telescopic leg 2. The vertical part 62 is perpendicular to the horizontal part 61, forming an L-shaped structure. The width of the vertical part 62 is greater than the wall thickness of the telescopic leg 2 and the wall thickness of the fixed leg 1, and the vertical part 62 serves as a limiting element. In this way, the limiting member 6 can have both guiding and limiting functions, which is equivalent to functional integration and strong functionality.

[0069] In one embodiment, such as Figure 7 As shown, the horizontal outrigger of the fire truck also includes a gap adjusting component 7, which is inserted through the fixed outrigger 1 or the telescopic outrigger 2 and can abut against the limiting component 6 to adjust the gap between the limiting component 6 and the telescopic outrigger 2.

[0070] Specifically, the gap adjusting component 7 is an adjusting bolt. When the gap adjusting component 7 is screwed toward the limiting component 6 and abuts against the outer wall of the limiting component 6, the gap between the limiting component 6 and the telescopic leg 2 is reduced. In the extreme state, when the limiting component 6 and the outer wall of the telescopic leg 2 are in contact, the limiting component 6 locks the telescopic leg 2, and the telescopic leg 2 cannot move freely. When the gap adjusting component 7 is screwed away from the limiting component 6, the gap between the limiting component 6 and the telescopic leg 2 is increased, which is conducive to the extension and retraction of the telescopic leg 2. However, this gap needs to be within a certain reasonable range. Otherwise, if the gap is too large, it will cause abnormal noise during the extension and retraction of the telescopic leg 2.

[0071] It is understandable that there can be multiple gap adjusting components 7, and each limiting component 6 can correspond to two gap adjusting components 7. The two gap adjusting components 7 are arranged in the horizontal and vertical directions respectively (the horizontal direction, the vertical direction and the axial direction of the fixed leg are perpendicular to each other), so that the gap can be adjusted in the vertical and horizontal directions.

[0072] In one embodiment, such as Figures 8-10 As shown, the horizontal outriggers of this fire truck also include a cable chain 8, pipes 9, and fasteners 10. The cable chain 8 is installed inside the fixed outrigger 1. It is understood that the size of the cable chain 8 is smaller than the size of the three-stage telescopic outrigger 23, meaning the size of the cable chain 8 is smaller than the size of the lowest-level telescopic outrigger 2, to avoid collisions between the cable chain 8 and multiple telescopic outriggers 2 when retracted. The pipes 9 are connected to the cable chain 8, and the cable chain 8 provides a fixing and installation position for one end of the pipes 9. Depending on their function, the pipes 9 can be divided into hydraulic lines and electrical lines. The hydraulic lines provide the hydraulic oil required for the drive source 4, and the electrical lines provide the electrical energy required for the drive source 4. The hydraulic lines and electrical lines can be installed on opposite sides of the cable chain 8. Alternatively, the hydraulic lines can be installed on one side of the cable chain 8, and the electrical lines can be installed inside the cable chain 8, optimizing the spatial arrangement of the pipes 9 and improving space utilization.

[0073] In one embodiment, the horizontal outrigger of the fire truck also includes a fixing member 10, which can be called a fixing clip. The fixing member 10 is disposed inside the telescopic outrigger 2 and is used to fix the pipeline 9. The fixing member 10 is used to fix the pipeline 9 and prevent the pipeline 9 from shifting relative to the telescopic outrigger 2 during the telescopic outrigger 2's extension and retraction.

[0074] It is understandable that the pipe 9 and the cable chain 8 can also be fixed together by the fastener 10. Specifically, the outer wall of the fastener 10 and the inner wall of the cable chain 8 are attached and fixed together, and the inner wall of the fastener 10 clamps the pipe 9, resulting in a good fixing effect.

[0075] In one embodiment, the pipeline 9 includes a main pipeline 91, a first bend pipeline 92, a second bend pipeline 93, and multiple secondary pipelines 94. The main pipeline 91 is connected to the cable chain 8 and is correspondingly disposed within the fixed support leg 1. The multiple secondary pipelines 94 are correspondingly disposed within multiple telescopic support legs 2. This method allows for the installation of the pipeline 9 within the internal space of the fixed support leg 1 and the telescopic support leg 2, and also allows for flexible adjustment of the internal space layout. Furthermore, more efficient use of the internal space provides ample space for the installation of multiple telescopic support legs 2.

[0076] For example, the multiple secondary pipes 94 are respectively a primary secondary pipe 941, a secondary secondary pipe 942, and a tertiary secondary pipe 943. The primary secondary pipe 941 is installed in the primary telescopic outrigger 21, the secondary secondary pipe 942 is installed in the secondary telescopic outrigger 22, and the tertiary secondary pipe 943 is installed in the tertiary telescopic outrigger 23.

[0077] Specifically, the main pipeline 91 is connected to one end of the secondary pipeline 94 adjacent to the main pipeline 91 via the first bend in the pipeline 92. In other words, one end of the main pipeline 91 is connected to the cable chain 8, and the other end of the main pipeline 91 is connected to the primary secondary pipeline 941 via the first bend in the pipeline 92. Since the cable chain 8 is suspended relative to the fixed support leg 1, the first bend in the pipeline 92 can not only change the direction of the main pipeline 91, but also lower the position of the other end of the main pipeline 91, so that the primary secondary pipeline 941 can fit against the bottom inner wall of the primary telescopic support leg 21. The other end of the secondary pipe 94 is connected to the adjacent secondary pipe 94 via a second bend pipe 93. That is, the end of the primary secondary pipe 941 furthest from the first bend pipe 92 is connected to the secondary secondary pipe 942 via the second bend pipe 93. This allows for a change in the direction of the other end of the primary secondary pipe 941 and also allows for an upward shift of its position, creating a height difference between the two secondary pipes 94 connected to the second bend pipe 93. Since the bottom of the secondary telescopic outrigger 22 is higher than the height of the primary telescopic outrigger 21, this configuration ensures that the positions of the primary secondary pipe 941 and the secondary secondary pipe 942 are adapted to the positions of the primary telescopic outrigger 21 and the secondary telescopic outrigger 22, respectively. After the third-stage telescopic outrigger 23 extends, the second-stage auxiliary pipe 942 and the third-stage auxiliary pipe 943 can be at the same height. At this time, the second-stage auxiliary pipe 942 is suspended relative to the second-stage telescopic outrigger 22, and the bottom wall of the third-stage auxiliary pipe 943 is in contact with the third-stage telescopic outrigger 23, saving the use of the bend pipe 9.

[0078] The first curved pipe 92 and the second curved pipe 93 can be directly curved pipe structures, or they can be wound around the guide wheel 11 to further improve the turning and reversing effects.

[0079] This embodiment also provides a fire truck, which includes the aforementioned horizontal outriggers. A drive source 4 drives multiple telescopic outriggers 2 to move synchronously along the axial direction of the fixed outrigger 1 via a transmission assembly 3, enabling multi-stage synchronous telescopic movement. The transmission assembly 3 and the multiple telescopic outriggers 2 are correspondingly arranged, and the transmission assembly 3 and the telescopic outriggers 2 can be added or removed simultaneously to achieve one or fewer stages of telescopic movement. The transmission assembly 3 is located on the outside of the telescopic outrigger 2; during maintenance, simply extending the telescopic outrigger 2 exposes the transmission assembly 3, facilitating component replacement without disassembling the telescopic outrigger 2. Furthermore, the drive source 4 adopts a vertical structure and is located on the outside of the fixed outrigger 1, not occupying the internal space of the fixed outrigger 1, allowing for flexible adjustment of the internal space layout of the fixed outrigger 1.

[0080] It should be noted that the horizontal outriggers of the fire truck shown in the accompanying drawings and described in this specification are merely one example of the application of the principles of the invention. Those skilled in the art will clearly understand that the principles of the invention are not limited to any details or components of the apparatus shown in the accompanying drawings or described in the specification.

[0081] It should be understood that the application of this invention is not limited to the detailed structure and arrangement of the components presented in this specification. The invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of the invention. The embodiments described in this specification illustrate the best known mode for carrying out the invention and will enable those skilled in the art to utilize the invention.

[0082] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and exemplary embodiments are to be considered as exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0083] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A horizontal outrigger for a fire truck, characterized in that, include: Fixed outriggers; Multiple telescopic outriggers are slidably disposed within the fixed outriggers, and the multiple telescopic outriggers are nested together; The transmission assembly is at least partially disposed on the exterior of the plurality of telescopic outriggers; A drive source is located outside the fixed support leg. The output end of the drive source is connected to the transmission assembly. The drive source drives multiple telescopic support legs to move synchronously along the axial direction of the fixed support leg through the transmission assembly. The transmission assembly includes: Multiple racks are correspondingly disposed on the outside of multiple telescopic outriggers, and the racks and the fixed outriggers are arranged parallel to each other in the axial direction; A drive gear set is disposed at the output end of the drive source, and the drive gear set meshes with a rack disposed corresponding to the drive gear set; Multiple driven gear sets are correspondingly disposed on the outside of multiple telescopic outriggers; A transmission component is disposed between the drive gear set and the driven gear set adjacent to the drive gear set, and between two adjacent driven gear sets; The drive source drives the drive gear set to rotate, so that the transmission component and the driven gear set drive the multiple telescopic outriggers to move through the rack; The drive gear set includes: A drive gear is disposed at the output end of the drive source, and the drive gear meshes with the rack corresponding to the drive gear; A synchronizing gear is coaxially arranged with the driving gear, and the transmission components are respectively sleeved on the outside of the synchronizing gear and the outside of the driven gear adjacent to the driving gear set; The horizontal outriggers of the fire truck also include: A guide member is provided in a direction perpendicular to the axial direction of the fixed leg. The guide member is disposed between the fixed leg and the telescopic leg adjacent to the fixed leg and between two adjacent telescopic legs, for guiding the telescopic leg. A limiting member is provided along the axial direction of the fixed support leg. The limiting member is disposed between the fixed support leg and the telescopic support leg adjacent to the fixed support leg, and between two adjacent telescopic support legs, for limiting the fixed support leg and the telescopic support leg. A gap adjustment component is inserted through the fixed leg or the telescopic leg and can abut against the limiting component, for adjusting the gap between the limiting component and the telescopic leg; The limiting member includes a horizontal part and a vertical part. The horizontal part is disposed at the bottom of the telescopic leg, and the top surface of the horizontal part is in contact with the telescopic leg. The horizontal part is used to guide the telescopic leg. The vertical part is disposed perpendicular to the horizontal part to form an L-shaped structure. The width of the vertical part is greater than the wall thickness of the telescopic leg and the wall thickness of the fixed leg. The vertical part is used to limit the telescopic leg.

2. The horizontal outrigger of the fire truck according to claim 1, characterized in that, The driven gear set includes: The first drive wheel, and the transmission components are respectively sleeved on the outside of the synchronous gear and the outside of the first drive wheel; The driven gear is coaxially arranged with the first driving wheel, and the driven gear meshes with the rack corresponding to the driven gear; The second driving wheel is coaxially arranged with the first driving wheel, the driven gear is arranged between the first driving wheel and the second driving wheel, and the transmission component is respectively sleeved on the outside of the second driving wheel and the outside of the first driving wheel adjacent to the driven gear set.

3. The horizontal outrigger of the fire truck according to claim 1, characterized in that, The transmission assembly also includes: The tensioning wheel is rotatably mounted relative to the telescopic outrigger. The transmission component is sleeved on the outside of the tensioning wheel and along the axial direction of the fixed outrigger. The position of the tensioning wheel relative to the telescopic outrigger is adjustable to adjust the tension of the transmission component.

4. The horizontal outrigger of the fire truck according to claim 3, characterized in that, The telescopic outrigger includes: Structural component, connected to the rack; A connecting bend plate is sleeved on the outside of one end of the structural member along the axial direction of the fixed support leg. A pin passes through the tensioning wheel and the connecting bend plate; The tension adjustment member is installed along the axial direction of the fixed leg, passing through the connecting bend plate and abutting against the structural member.

5. The horizontal outriggers of a fire truck according to any one of claims 1-4, characterized in that, The horizontal outriggers of the fire truck also include: A cable chain, wherein the cable chain is disposed within the fixed support leg; Pipes are connected to the cable chain, and the pipes are respectively inserted into the multiple telescopic outriggers; A fixing element is installed inside the telescopic support leg to fix the pipeline.

6. The horizontal outrigger of the fire truck according to claim 5, characterized in that, The pipeline includes a main pipeline, a first bend pipeline, a second bend pipeline, and multiple auxiliary pipelines. The multiple auxiliary pipelines are correspondingly installed in multiple telescopic outriggers. The main pipeline is connected to the cable chain. The main pipeline is connected to one end of an auxiliary pipeline adjacent to the main pipeline through the first bend pipeline. The other end of the auxiliary pipeline is connected to an auxiliary pipeline adjacent to the auxiliary pipeline through the second bend pipeline, so that there is a height difference between the two auxiliary pipelines connected to the second bend pipeline.

7. The horizontal outriggers of a fire truck according to any one of claims 1-4, characterized in that, An installation gap is provided between two adjacent telescopic outriggers, and the transmission assembly is disposed within the installation gap, which is 66mm to 70mm.

8. A fire truck, characterized in that, Includes the fire truck horizontal outriggers as described in any one of claims 1-7.

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