Collapsible hose trailer

Abstract

This utility model relates to the field of fire-fighting equipment technology, and in particular to a foldable hose trailer, including a vehicle body. The vehicle body is composed of a base frame, two sets of side frames, and two sets of end frames spliced ​​together. The two sets of side frames are symmetrically distributed front and rear, and the two sets of end frames are symmetrically distributed left and right. The two end frames are located between the two ends of the two sets of side frames. The base frame is horizontally set between the bottom of the two sets of side frames and the two sets of end frames. There are four sets of first hinges. Two sets of first hinges are installed on the outside of the connection between the left front end and the right rear end of the side frame and the end frame, and the other two sets of first hinges are installed on the inside of the connection between the left rear end and the right front end of the side frame and the end frame. This utility model achieves flexible folding through a multi-set hinge structure: when folding, the base plate is first rotated upwards by 90° and then pushed forward, so that the four sides of the railing move in a parallelogram shape. After folding, the space can be reduced by half, greatly reducing the storage space occupied. In addition, the end frame on the right side of the vehicle body adopts a detachable design, providing an open passage for equipment loading and unloading.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, and in particular to a foldable hose trailer. Background Technology

[0002] In firefighting operations and routine equipment transport scenarios, the handling and transportation of firefighting equipment such as hoses and demolition tools are always key links affecting operational efficiency. Firefighters usually use manual handling to transport such equipment to the work site. This process not only consumes a lot of physical strength, leading to personnel fatigue, but also has the problem of low handling efficiency. Especially in emergency rescue scenarios, the delay in equipment transportation may delay the best time for response.

[0003] To improve the drawbacks of manual handling, small trailers have begun to be used in some scenarios to assist in the transportation of fire-fighting equipment. However, traditional small trailers are mostly one-piece fixed structures with relatively fixed size and space occupation, making it difficult to adapt to the limited space conditions of fire truck or equipment storage areas. This results in the small trailers being difficult to store conveniently and may even squeeze the storage space of other critical equipment, increasing the difficulty of vehicle loading planning. In addition, the fences around the trailers are mostly fixed, which will affect the subsequent placement and retrieval of fire-fighting equipment such as water hoses, causing inconvenience. Therefore, this application proposes a foldable water hose trailer. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a foldable water hose trailer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a foldable water hose trailer, comprising: The vehicle body is composed of a base frame, two sets of side frames and two sets of end frames. The two sets of side frames are symmetrically distributed front and back, and the two sets of end frames are symmetrically distributed left and right. The two end frames are located between the two ends of the two sets of side frames, and the base frame is horizontally set between the bottom of the two sets of side frames and the two sets of end frames. The first hinge group is provided in four sets. Two sets of the first hinge group are installed on the outside of the connection between the side frame and the end frame at the left front end and right rear end, and the other two sets of the first hinge group are installed on the inside of the connection between the side frame and the end frame at the left rear end and right front end. The second hinge assembly is installed at the top of the connection between the base frame and one of the side frames; The end frame on the left side of the vehicle body is fixed, while the end frame on the right side of the vehicle body is detachable.

[0006] Optionally, a push-pull handrail is provided on the left side of the vehicle body, and articulated frames are installed at both ends of the bottom of the left end frame of the vehicle body. Both ends of the bottom of the push-pull handrail are connected to the corresponding articulated frames.

[0007] Optionally, casters are installed on the left end of the bottom of both sets of side frames, and tires are installed on the right end of the bottom of both sets of side frames. The bottom of the two tires and the bottom of the two casters are on the same horizontal plane.

[0008] Optionally, the end frame on the right side of the vehicle body includes two vertical tubes, a horizontal tube, and a crossbar. The two vertical tubes are respectively installed at both ends of the top of the horizontal tube, and both vertical tubes are connected to the two sets of side frames through the first hinge group. The crossbar is detachably installed at the top of the two vertical tubes. Multiple vertical railings are installed at equal intervals at the bottom of the crossbar. The top of the horizontal tube has slots at equal intervals, the same number as the number of railings. The bottom end of each railing can be inserted into the corresponding slot. Locking assemblies are provided between the two ends of the crossbar and the connection of the vertical tube.

[0009] Optionally, the locking assembly includes a fixing block, a sleeve, a plug rod, and two limiting balls. The fixing block is fixedly installed at the opening at the top of the vertical tube. A through-hole is provided in the center of the fixing block. The sleeve is fixed and vertically inserted into the end of the horizontal bar. The bottom end of the sleeve can extend into the plug hole on the fixing block inside the vertical tube. The plug rod is movably inserted into the sleeve. Openings are provided at the lower positions on both sides of the sleeve. The two limiting balls are located at the two openings respectively, and the side walls of the two limiting balls can extend out of the openings and engage with the plug hole for limiting and locking.

[0010] Optionally, the diameter of the opening of the through-hole on the outer wall of the sleeve is smaller than the diameter of the limiting ball. An annular groove is provided at the lower position of the side wall of the insertion rod, and the lower half of the annular groove is set as a frustum shape with a wider bottom and a narrower top. The height of the annular groove is lower than that of the through-hole. The diameter of the lower half of the insertion hole is larger than that of the upper half. The connection between the upper and lower parts of the insertion hole is set as a funnel shape with a wider bottom and a narrower top. The limiting ball can contact the funnel part of the insertion hole through the through-hole by the compression of the frustum part of the annular groove. A first spring is fixedly connected to the bottom of the sleeve, and the top of the first spring abuts against the bottom of the insertion rod.

[0011] Optionally, the diameter of the top of the sleeve is larger than that of its lower half, and the top of the sleeve is flush with the outer wall of the crossbar. The diameter of the upper half of the insertion hole is adapted to the diameter of the lower half of the sleeve. A vertical first sliding groove is provided on the upper half of the inner wall of the sleeve, and a horizontal second sliding groove is provided on the side at the middle of the first sliding groove. A limiting groove is provided at the top of the second sliding groove. A slider located in the second sliding groove is fixedly installed on the outer wall of the insertion rod. A groove is provided at the top of the slider. A limiting block is inserted into the groove. A second spring is fixedly connected between the bottom of the groove and the bottom of the limiting block. The part of the limiting block extending out of the groove is arc-shaped. A vertical toggle plate is fixedly installed at the top of the insertion rod.

[0012] The beneficial effects of this utility model are: The multi-link structure enables flexible folding: when folding, the base plate is first rotated upwards by 90°, then pushed forward, causing the four-sided railing to move in a parallelogram shape. After folding, the space is reduced by half, greatly minimizing storage space. The folded trailer can be easily placed inside the fire equipment box or placed on the side of the 15-meter ladder rack, making full use of the unused space in the fire truck and storage area, avoiding encroachment on the storage space of other critical fire equipment, reducing the difficulty of fire truck loading planning, and improving space utilization.

[0013] The end frame on the right side of the vehicle body features a detachable design, consisting of vertical tubes, horizontal tubes, crossbars, and railings. The crossbars are detachably installed at the top of the vertical tubes via a locking assembly. When equipment needs to be retrieved or placed, simply operate the locking assembly (press the insert rod to disengage the limiting ball from the insertion hole, and the crossbar can be removed), then remove the railings, opening the enclosure structure on the right side of the vehicle body. This provides an open passage for equipment retrieval and placement. Whether it is placing hoses in bulk or quickly retrieving breaching tools, there is no need to be obstructed by fixed barriers, making the operation convenient and efficient, further improving the convenience and timeliness of firefighting operations. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the right side of the vehicle body of this utility model; Figure 3 This is a schematic diagram of the left side of the vehicle body of this utility model; Figure 4 This is a schematic diagram of the end frame, hinge frame, and push-pull handrail of this utility model; Figure 5 This is a schematic diagram of the folding structure of the vehicle body of this utility model; Figure 6 This is a schematic diagram of the end frame structure of this utility model; Figure 7 This is a cross-sectional structural diagram of the locking assembly of this utility model; Figure 8 This is a cross-sectional structural diagram of the fixing block of this utility model; Figure 9 This is a cross-sectional structural diagram of the sleeve of this utility model; Figure 10 This is a cross-sectional structural diagram of the connection between the insertion rod, the slider, and the limiting block of this utility model; In the picture: 1. Vehicle body; 11. Base frame; 12. Side frame; 13. End frame; 14. First hinge group; 15. Second hinge group; 16. Casters; 17. Tires; 18. Articulated frame; 19. Push-pull handrail; 131. Vertical pipe; 132. Horizontal pipe; 133. Horizontal bar; 134. Railing; 1321, Slot; 21. Fixing block; 22. Sleeve; 23. Insert rod; 24. First spring; 25. Limiting ball; 26. Slider; 27. Limiting block; 28. Second spring; 211. Socket; 221. Through opening; 222. First slide groove; 223. Second slide groove; 224. Limiting groove; 231. Actuating plate; 232. Annular groove. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Please see Figures 1-10 This utility model provides a technical solution: a foldable hose trailer, including a vehicle body 1. The vehicle body 1 is composed of a base frame 11, two sets of side frames 12, and two sets of end frames 13. The two sets of side frames 12 are symmetrically distributed front and rear, and the two sets of end frames 13 are symmetrically distributed left and right, with the two end frames 13 located between the two ends of the two sets of side frames 12. The base frame 11 is horizontally positioned between the bottom of the two sets of side frames 12 and the two sets of end frames 13. Four sets of first hinge groups 14 are provided, with two sets of first hinge groups 14 installed on the outside of the connection between the left front end and right rear end of the side frames 12 and the end frames 13, and the other two sets of first hinge groups 14 installed on the connection between the left rear end and right front end of the side frames 12 and the end frames 13. Inside, the second hinge assembly 15 is installed on top of the connection between the base frame 11 and one of the side frames 12. The end frame 13 on the left side of the vehicle body 1 is fixed, and the end frame 13 on the right side of the vehicle body 1 is detachable. The vehicle body 1 is formed by splicing the base frame 11, the side frames 12, and the end frames 13, and is equipped with four sets of first hinge assemblies 14 distributed in specific positions and second hinge assemblies 15 between the base frame 11 and the side frames 12. At the same time, the left end frame 13 is set to be fixed and the right end frame is set to be detachable. The multiple hinge assemblies enable the vehicle body 1 to be flexibly folded to greatly reduce the storage space, and the detachable end frame 13 makes it convenient to pick up and put down equipment, effectively solving the problems of large space occupation and inconvenient access of traditional trailers.

[0017] like Figure 1 and Figure 4As shown, a push-pull handle 19 is provided on the left side of the vehicle body 1. Both ends of the bottom of the left end frame 13 of the vehicle body 1 are equipped with hinge frames 18. Both ends of the bottom of the push-pull handle 19 are connected to the corresponding hinge frames 18, allowing firefighters to easily push or pull the vehicle body 1 through the push-pull handle 19, significantly reducing physical exertion, improving the convenience of moving the vehicle body 1, and meeting the needs of rapid equipment transfer in firefighting operations.

[0018] like Figure 1 As shown, swivel casters 16 are installed on the left end of the bottom of both sets of side frames 12, and tires 17 are installed on the right end of the bottom of both sets of side frames 12. The bottom of the two tires 17 and the bottom of the two swivel casters 16 are on the same horizontal plane. The swivel casters 16 can turn flexibly, which makes it convenient for the vehicle body 1 to adjust its direction in narrow spaces or complex sites. By combining with the tires 17, the vehicle body 1 can move more flexibly and smoothly, adapting to various working scenarios.

[0019] like Figure 1 and Figure 6 As shown, the end frame 13 on the right side of the vehicle body 1 includes two vertical tubes 131, a horizontal tube 132, and a crossbar 133. The two vertical tubes 131 are respectively installed at both ends of the top of the horizontal tube 132, and both vertical tubes 131 are connected to the two sets of side frames 12 through the first hinge group 14. The crossbar 133 is detachably installed at the top of the two vertical tubes 131. Multiple vertical railings 134 are installed at equal intervals at the bottom of the crossbar 133. The top of the horizontal tube 132 has slots at equal intervals, the same number as the number of railings 134. 1321, the bottom end of each railing 134 can be inserted into the corresponding slot 1321. Both ends of the horizontal bar 133 are provided with locking components at the connection points with the vertical pipe 131. The horizontal bar 133 can be disassembled through the locking components. The railing 134 cooperates with the slot 1321 on the horizontal pipe 132. When it is necessary to retrieve or place equipment, the horizontal bar 133 and the railing 134 can be disassembled to form an open access channel, avoiding obstruction by fixed fences. This allows for the rapid placement or retrieval of fire-fighting equipment in batches, improving operational efficiency.

[0020] like Figure 6 and Figure 7As shown, the locking assembly includes a fixing block 21, a sleeve 22, a plug rod 23, and two limiting balls 25. The fixing block 21 is fixedly installed at the opening at the top of the vertical tube 131. A through-hole 211 is provided in the center of the fixing block 21. The sleeve 22 is fixed and vertically inserted into the end of the horizontal bar 133, and the bottom end of the sleeve 22 can extend into the vertical tube 131 and be inserted into the through-hole 211 on the fixing block 21. The plug rod 23 is movably inserted into the sleeve 22. Openings 221 are provided at the lower positions on both sides of the sleeve 22. The two limiting balls 25 are respectively... Located at two openings 221, and with the side walls of the two limiting balls 25 extending out of the openings 221 to engage with the insertion holes 211, the horizontal bar 133 and the vertical tube 131 are quickly locked together by the cooperation of the fixing block 21, the sleeve 22, the insertion rod 23 and the limiting balls 25, and the insertion rod 23 moving to drive the limiting balls 25 to extend out of the openings 221 and engage with the insertion holes 211. The structure is simple and the locking is stable. During operation, only the insertion rod 23 needs to be controlled to complete the locking or unlocking, making the disassembly and installation of the horizontal bar 133 more convenient and ensuring the reliability and ease of use of the end frame 13 structure.

[0021] like Figure 7 , Figure 8 and Figure 9 As shown, the opening diameter of the through-hole 221 on the outer wall of the sleeve 22 is smaller than the diameter of the limiting ball 25. An annular groove 232 is provided at the lower position of the side wall of the insertion rod 23, and the lower half of the annular groove 232 is set as a frustum shape with a wider bottom and a narrower top. The height of the annular groove 232 is lower than that of the through-hole 221. The diameter of the lower half of the insertion hole 211 is larger than the diameter of its upper half. The connection between the upper and lower parts of the insertion hole 211 is set as a funnel shape with a wider bottom and a narrower top. The limiting ball 25 can be squeezed by the frustum part of the annular groove 232 and can pass through the through-hole 221 and the insertion hole 211. The funnel part contacts the sleeve 22. The bottom end of the sleeve 22 is fixedly connected to the first spring 24. The top of the first spring 24 abuts against the bottom of the insertion rod 23. The opening diameter of the through 221 limits the limiting ball 25 to prevent it from falling off. The annular groove 232 on the insertion rod 23 is designed in a frustum shape and matches the funnel-shaped structure of the insertion hole 211 to ensure that the limiting ball 25 is accurately engaged. The first spring 24 provides a restoring force for the insertion rod 23, which further improves the stability of the locking assembly and the smoothness of unlocking, extends the service life of the assembly, and ensures the long-term reliability of the disassembly and assembly of the end frame 13.

[0022] like Figures 7-10As shown, the diameter of the top of the sleeve 22 is larger than that of its lower half, and the top of the sleeve 22 is flush with the outer wall of the crossbar 133. The diameter of the upper half of the insertion hole 211 is adapted to the diameter of the lower half of the sleeve 22. A vertical first sliding groove 222 is formed in the upper half of the inner wall of the sleeve 22. A horizontal second sliding groove 223 is formed on the side at the middle of the first sliding groove 222. A limiting groove 224 is formed at the top of the second sliding groove 223. A slider 26 located in the second sliding groove 223 is fixedly installed on the outer wall of the insertion rod 23. A groove is formed at the top of the slider 26. A limiting block 27 is inserted into the groove. A second spring 28 is fixedly connected between the bottom of the groove and the bottom end of the limiting block 27. The limiting block 27 extends out of the groove. Part of the sleeve 23 is designed to be arc-shaped. A vertical actuating plate 231 is fixedly installed at the top of the insertion rod 23. The first sliding groove 222 and the second sliding groove 223 on the inner wall of the sleeve 22 cooperate with the slider 26 and the limiting block 27 on the insertion rod 23. The actuating plate 231 drives the insertion rod 23 to rotate and move. The slider 26 slides in the first sliding groove 222 and the second sliding groove 223. When the slider 26 is located in the second sliding groove 223, the retractable limiting block 27 at the top of the slider 26 will be engaged in the limiting groove 224 at the top of the second sliding groove 223 under the elastic force of the second spring 28. At this time, the insertion rod 23 cannot move up and down in the sleeve 22, which avoids the insertion rod 23 from moving accidentally and causing the lock to fail, making the lock assembly safer and more stable to use.

[0023] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A collapsible hose trailer, characterized in that include: The vehicle body (1) is composed of a base frame (11), two sets of side frames (12) and two sets of end frames (13). The two sets of side frames (12) are symmetrically distributed front and back, and the two sets of end frames (13) are symmetrically distributed left and right. The two end frames (13) are located between the two ends of the two sets of side frames (12). The base frame (11) is horizontally set between the bottom of the two sets of side frames (12) and the two sets of end frames (13). The first hinge group (14) is provided in four sets, of which two sets of the first hinge group (14) are installed on the outside of the connection between the left front end and the right rear end of the side frame (12) and the end frame (13), and the other two sets of the first hinge group (14) are installed on the inside of the connection between the left rear end and the right front end of the side frame (12) and the end frame (13); The second hinge assembly (15) is installed on top of the connection between the base frame (11) and one of the side frames (12); The end frame (13) on the left side of the vehicle body (1) is fixed, while the end frame (13) on the right side of the vehicle body (1) is detachable.

2. The collapsible hose trailer of claim 1, wherein, A push-pull armrest (19) is provided on the left side of the vehicle body (1). Both ends of the bottom of the left end frame (13) of the vehicle body (1) are equipped with hinge frames (18). Both ends of the bottom of the push-pull armrest (19) are connected to the corresponding hinge frames (18).

3. The collapsible hose trailer of claim 1, wherein, Both sets of side frames (12) are equipped with casters (16) on the left side of the bottom and tires (17) on the right side of the bottom. The bottom of the two tires (17) and the bottom of the two casters (16) are on the same horizontal plane.

4. The collapsible hose trailer of claim 1, wherein, The end frame (13) on the right side of the vehicle body (1) includes two vertical tubes (131), a horizontal tube (132) and a crossbar (133). The two vertical tubes (131) are respectively installed at the two ends of the top of the horizontal tube (132), and the two vertical tubes (131) are connected to the two sets of side frames (12) through the first hinge group (14). The crossbar (133) is detachably installed at the top of the two vertical tubes (131). Multiple vertical railings (134) are installed at equal intervals at the bottom of the crossbar (133). The top of the horizontal tube (132) is provided with slots (1321) at equal intervals, the same number as the number of railings (134). The bottom end of each railing (134) can be inserted into the corresponding slot (1321). Locking components are provided between the two ends of the crossbar (133) and the connection between the vertical tube (131).

5. The collapsible hose trailer of claim 4 wherein, The locking assembly includes a fixing block (21), a sleeve (22), a plug rod (23), and two limiting balls (25). The fixing block (21) is fixedly installed at the opening at the top of the vertical tube (131). A through-hole (211) is provided at the center of the fixing block (21). The sleeve (22) is fixed and vertically inserted into the end of the horizontal bar (133). The bottom end of the sleeve (22) can extend into the vertical tube (131) and be inserted into the plug hole (211) on the fixing block (21). The plug rod (23) is movably inserted into the sleeve (22). A through-hole (221) is provided at the lower position on both sides of the sleeve (22). The two limiting balls (25) are located at the two through-holes (221), and the side walls of the two limiting balls (25) can extend out of the through-holes (221) and engage with the plug hole (211).

6. The collapsible hose trailer of claim 5, wherein, The diameter of the opening (221) on the outer wall of the sleeve (22) is smaller than the diameter of the limiting ball (25). An annular groove (232) is provided at the lower position of the side wall of the insertion rod (23), and the lower half of the annular groove (232) is set as a frustum shape with a wider bottom and a narrower top. The position of the annular groove (232) is lower than the opening (221). The diameter of the lower half of the insertion hole (211) is larger than the diameter of its upper half. The upper and lower connection of the insertion hole (211) is set as a funnel shape with a wider bottom and a narrower top. The limiting ball (25) can contact the funnel part of the insertion hole (211) through the opening (221) by the squeezing of the frustum part of the annular groove (232). A first spring (24) is fixedly connected to the bottom of the sleeve (22), and the top of the first spring (24) abuts against the bottom of the insertion rod (23).

7. The collapsible hose trailer of claim 6 wherein, The diameter of the top of the sleeve (22) is larger than that of its lower half, and the top of the sleeve (22) is flush with the outer wall of the crossbar (133). The diameter of the upper half of the insertion hole (211) is adapted to the diameter of the lower half of the sleeve (22). A vertical first groove (222) is provided on the upper half of the inner wall of the sleeve (22), and a horizontal second groove (223) is provided on the side at the middle of the first groove (222). The top of the second groove (223) has a limited opening. The outer wall of the insert rod (23) is fixedly installed with a slider (26) located in the second slide groove (223). The top of the slider (26) is provided with a groove, and a limiting block (27) is inserted into the groove. A second spring (28) is fixedly connected between the bottom of the groove and the bottom end of the limiting block (27). The part of the limiting block (27) extending out of the groove is set as an arc shape. A vertical toggle plate (231) is fixedly installed at the top of the insert rod (23).

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