Fire extinguishing rescue trailer

Abstract

The application discloses a fire extinguishing and rescue trailer and belongs to the technical field of rescue trailers. The fire extinguishing and rescue trailer comprises a trailer chassis, a tire assembly, a traction frame, a carriage main body fixed on the trailer chassis, a storage assembly vertically arranged on the trailer chassis, a winding execution assembly arranged on the inner wall of the carriage main body and used for winding and recycling fire hoses, a water squeezing guide assembly fixed on the trailer chassis and located below the winding execution assembly and used for squeezing and draining water, and a synchronous driving assembly connected between the winding execution assembly and the water squeezing guide assembly. The synchronous driving assembly is used for driving the winding execution assembly and the water squeezing guide assembly to be linked, water in the fire hose is forcedly squeezed by a water squeezing roller while the fire hose is wound and recycled, the problems that space is occupied by the existing matched equipment, manual recycling is labor-intensive and low in efficiency are solved, water in the fire hose is effectively removed, and the recycling efficiency after fire extinguishing and rescue and the equipment safety are improved.

Description

Technical Field

[0001] This invention relates to the field of rescue trailer technology, and more particularly to a fire-fighting and rescue trailer. Background Technology

[0002] Currently, fire-fighting and rescue trailers are widely used in grassroots firefighting, forest fire prevention and control, and industrial park security due to their high mobility and integration. These trailers typically integrate diesel pump sets, hydraulic component cabinets, air respirator supports, and large-capacity hose storage compartments. In firefighting operations, fire hoses serve as a crucial transport link between water sources and the fire scene, with single-mission deployments often reaching hundreds or even thousands of meters in length. After the mission, personnel must retrieve and rewind large quantities of hoses back into the trailer's storage compartments. Existing retrieval methods primarily rely on manual winding, the use of simple rotating shafts for assistance, or the need for external, separate rewinding equipment.

[0003] However, existing fire-fighting and rescue trailers have shortcomings in the hose recovery process. If a separate, matching rewinding device is used, the device itself is large, which will encroach on the already limited loading space inside the trailer and affect the allocation of other rescue supplies. Secondly, after actual use, fire hoses inevitably retain a large amount of water. In addition, the large diameter of the hoses and the long laying distance greatly increase the frictional resistance during the rewinding process due to the gravity and hydrostatic pressure of the residual water, resulting in high labor intensity and low work efficiency for manual operation. Furthermore, if the wet hoses are directly put into the closed storage compartment without effective squeezing out of water, it will not only increase the transport load of the trailer, but the long-term retention of residual water will also create a high-humidity environment, which can easily induce corrosion of the vehicle's metal structure, mold and damage to the hoses, and moisture failure of the equipment inside the compartment, affecting the service life and safety of the equipment.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides a fire-fighting and rescue trailer to solve the technical problems of existing fire-fighting and rescue trailers where the supporting equipment occupies space during the hose recovery process, and it is difficult to effectively remove water accumulated inside the hose, resulting in high labor intensity, low efficiency, and corrosion damage to the vehicle body and equipment during the hose reeling process.

[0006] The present invention employs the following technical solution: a fire-fighting and rescue trailer, comprising a trailer chassis with a tire assembly mounted on its bottom and a towing frame fixed at its front end; a trailer body fixed to the trailer chassis for forming the trailer's loading space; a storage assembly vertically rotatably mounted on the trailer chassis for storing rescue equipment; a winding execution assembly disposed on the inner wall of the trailer body, including a winding main shaft and a slotted reel slidably mounted on the winding main shaft for winding and retrieving fire hoses; a water squeezing guide assembly fixed to the trailer chassis and corresponding to the area below the winding execution assembly, including a water squeezing roller for squeezing and draining the fire hose during the winding process; and a synchronous drive assembly connected to the winding execution assembly and the water squeezing guide assembly for driving both to rotate synchronously, so as to complete the water squeezing operation simultaneously with winding.

[0007] Furthermore, the winding execution assembly also includes a support frame, a rotating shaft, and a rotation limiting block. The support frame is fixed to the inner wall of the carriage body to provide support. The rotating shaft is horizontally rotatably connected to the carriage body. The rotation limiting block is fixed to one end of the rotating shaft and has a stop block. The winding spindle is rotatably mounted on the rotation limiting block. The rotation limiting block is configured to restrict the rotation angle of the winding spindle through the stop block, so that it can only rotate within a preset range. When the winding spindle rotates to a vertical state, the winding execution assembly is configured to be in a coiled state.

[0008] Furthermore, the winding execution assembly also includes a right-angle pressure bar and a shaft end sleeve. The surface of the slotted reel has a long sliding groove. The right-angle pressure bar is fixed to the outer surface of the winding main shaft and the slotted reel near one end to hold the fire hose in place and prevent it from loosening. It is configured such that when the slotted reel is retracted into the winding main shaft, the right-angle pressure bar is engaged with the outside of the winding main shaft. Two sets of shaft end sleeves are symmetrically embedded and fixed, respectively located near one end of the winding main shaft and the slotted reel. The long sliding groove is adapted to the position and shape of the shaft end sleeves fixed on the winding main shaft so that the slotted reel can be axially retracted into the winding main shaft.

[0009] Furthermore, the winding execution assembly also includes a limit stop, a mounting cover, a pin, and a return spring. The limit stop is rotatably disposed within the shaft end sleeve and has two position states: horizontal and vertical. It is configured to prevent the water tape from falling off during winding in the vertical state and to assist in removing the wound water tape in the horizontal state. The mounting cover is fixed on the adjacent sides of the two sets of shaft end sleeves. The pin is vertically and movably disposed within the mounting cover, with its two ends respectively moving through the shaft end sleeve and the mounting cover. One end of the pin has a protruding edge. The return spring is coaxially sleeved on the pin and located inside the mounting cover, with its two ends respectively abutting against the protruding edge and the bottom surface of the inner wall of the mounting cover. It is configured to provide elastic restoring force to keep the pin always in the state of penetrating the mounting cover.

[0010] Furthermore, the winding execution assembly also includes a locking shaft and a locking cam. The locking shaft is horizontally rotatably disposed on the side of the winding spindle and the slotted reel near one end. The locking cam is fixedly sleeved on the locking shaft and has two protruding ends. The two protruding ends are configured to always abut against the two pins. The locking shaft is configured to drive the locking cam by rotation, thereby driving the pins to move by the two protruding ends, so as to engage in the corresponding horizontal or vertical buckle hole on the limit stop, thereby limiting the position of the limit stop.

[0011] Furthermore, the winding execution assembly also includes a locking component and a butterfly grip. The locking component is horizontally fixed through one end of the inner wall of the winding spindle and the slotted reel. The locking component has an internal threaded hole. One end of the locking shaft has a threaded groove and is threadedly connected to the internal threaded hole in the locking component. The butterfly grip is fixed to the other end of the locking shaft. The width of the locking cam is greater than the diameter of the locking shaft. The locking shaft is configured to generate a threaded locking force through the rotation of the butterfly grip. Combined with the width feature of the locking cam, it achieves a stable locking of the limit stop bar in a horizontal or vertical state.

[0012] Furthermore, the water-squeezing guide assembly also includes a water-squeezing bracket, a protective box, and a pinion. The water-squeezing bracket is fixed to the trailer chassis, and its bottom has a drainage groove for draining accumulated water. Two water-squeezing rollers are arranged vertically and horizontally within the water-squeezing bracket. One end of each water-squeezing roller is rotatably mounted on the inner wall of the water-squeezing bracket, and there is a gap between that end of the water-squeezing roller and the inner wall of the water-squeezing bracket. This gap is configured to allow the fire hose in the initial state to pass through the gap between the two water-squeezing rollers. The protective box is fixed to the inner wall of the main body of the vehicle. The other ends of the two water-squeezing rollers extend into the protective box and are respectively connected to the intermeshing pinions. The pinions are configured to ensure that the two water-squeezing rollers rotate synchronously in opposite directions to achieve the water-squeezing function of the fire hose.

[0013] Furthermore, the synchronous drive assembly includes a driven gear, a first pulley, a second pulley, a belt body, a drive gear, and a hand crank. The driven gear and the first pulley are fixedly sleeved on one end of the rotating shaft, the second pulley is fixedly sleeved on the end of the dewatering roller, the belt body connects the first pulley and the second pulley, the drive gear is rotatably mounted on the outer side of the carriage body via a rotating shaft and meshes with the driven gear, and the hand crank is fixed on the drive gear and configured to simultaneously drive the winding execution assembly and the dewatering guide assembly through the drive gear.

[0014] Furthermore, the synchronous drive assembly also includes a support shaft, an anti-reverse pawl, and a backstop block. The support shaft is disposed on the side of the main body of the carriage, the anti-reverse pawl is rotatably disposed on the support shaft, the backstop block is fixed on the side of the main body of the carriage, and a backstop spring is connected between the backstop block and the anti-reverse pawl. The anti-reverse pawl is configured to engage unidirectionally in the tooth groove of the drive gear under the action of the backstop spring, in order to prevent the synchronous drive assembly from reversing due to water belt tension.

[0015] Furthermore, the storage assembly includes an equipment storage compartment, a support panel, a partition tray, fixing clamps, and a limit lock. The equipment storage compartment is vertically rotatably mounted on the trailer chassis. The support panel is vertically slidably mounted inside the equipment storage compartment. The partition tray is vertically spaced and fixed to one side of the support panel. Several fixing clamps are fixed to the other side of the support panel. The limit lock is located at the bottom of the equipment storage compartment and is configured to lock the rotation angle of the equipment storage compartment.

[0016] The technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects: This invention discloses a fire-fighting and rescue trailer. It utilizes a vertically rotating storage component on the trailer chassis and main body, a built-in winding execution component, and a water-squeezing guide component located below them. A synchronous drive component achieves power coupling between the winding and water-squeezing mechanisms, effectively solving the problems of disorganized storage of rescue equipment and low space utilization caused by the lack of integrated winding equipment in existing technologies. During the winding and retraction of fire hoses, the trailer simultaneously uses a water-squeezing roller to forcibly squeeze and drain the hoses. This structure not only eliminates the need for independent external winding equipment, freeing up limited loading space within the trailer to accommodate more rescue supplies, but also reduces the resistance caused by gravity and hydrostatic pressure from water accumulation inside the hoses, alleviating the labor intensity of operators and improving recovery efficiency. Simultaneously, the dried hoses after water squeezing are stored, eliminating a high-humidity environment and effectively avoiding the risks of corrosion of the vehicle's metal structure, mold growth on the hoses, and moisture-induced equipment failure within the compartment. This extends the service life of the entire vehicle and equipment and ensures transportation safety. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0018] In the attached diagram: Figure 1 This is an overall schematic diagram of a fire-fighting and rescue trailer according to the present invention; Figure 2 This is a schematic diagram of the structure of the fire-fighting and rescue trailer of the present invention when it is deployed; Figure 3 For the present invention Figure 2 A schematic diagram of the bottom structure; Figure 4 For the present invention Figure 3 A schematic diagram of the expanded structure of the components stored in the middle; Figure 5 For the present invention Figure 4 A schematic diagram of a partial structure; Figure 6 For the present invention Figure 5 A schematic diagram of a partial structure; Figure 7 For the present invention Figure 6 A magnified structural diagram at point A; Figure 8 For the present invention Figure 7 A magnified structural diagram at point B; Figure 9 For the present invention Figure 6 A magnified structural diagram at point C; Figure 10 For the present invention Figure 6 A schematic diagram of a partial structure; Figure 11 For the present invention Figure 10 A magnified structural diagram at point D; Figure label: 1. Trailer chassis; 11. Tire assembly; 12. Cargo body; 13. Top storage frame; 14. Side flap; 141. First hydraulic support rod; 15. Side door; 16. Storage partition; 17. Rear flap; 18. Second hydraulic support rod; 19. Emergency lighting; 110. Towing frame; 112. Storage partition; 113. Fire hose; 2. Storage assembly; 21. Equipment storage compartment; 22. Support panel; 23. Divider tray; 24. Fixing clamp; 25. Limit lock; 3. Rewinding actuator assembly; 31. Support frame; 32. Rotating shaft; 321. Rotation limit block; 33. Rewinding spindle; 34. Grooved reel; 341. Long slide groove; 35. Right-angle pressure bar; 36. Shaft end sleeve; 37. Limiting stop bar; 38. Mounting cover; 39. Pin rod; 310. Locking shaft rod; 311. Locking component; 312. Butterfly handle; 313. Locking cam; 4. Dewatering guide assembly; 41. Dewatering bracket; 42. Dewatering roller; 43. Protective box; 51. Driven gear; 52. First pulley; 53. Belt body; 54. Second pulley; 55. Drive gear; 56. Hand crank; 57. Support shaft; 58. Anti-reverse pawl; 59. Backstop block. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Reference Figures 1 to 11 As shown, this embodiment of the invention provides a fire-fighting and rescue trailer. The trailer achieves efficient storage of rescue equipment and automated water squeezing and winding of fire hoses 113 through integrated design. The fire-fighting and rescue trailer includes a trailer chassis 1, and tire assemblies 11 are symmetrically installed at the bottom of the trailer chassis 1 to support the vehicle body and realize mobile transportation at the rescue site. A towing frame 110 is fixedly connected to the front side of the trailer chassis 1. The towing frame 110 is provided with a connecting ring (not shown in the figure) which is suitable for matching and hooking with the tow hook of an external towing vehicle.

[0022] like Figures 1 to 6As shown, a cargo box body 12 is fixedly installed on the trailer chassis 1, forming a semi-enclosed loading space. A top storage frame 13 is fixed to the top of the cargo box body 12 for storing long-handled equipment or large items. An emergency lighting lamp 19 is fixed to the inner wall of the top storage frame 13 to provide lighting for on-site operations. Side flaps 14 that can be flipped upwards are provided on both sides of the cargo box body 12. The side flaps 14 are stably supported after opening by symmetrically arranged first hydraulic support rods 141. Specifically, the first hydraulic support rods 141... The bottom end of the rod 141 is movably connected to the inner side of the carriage body 12, and its telescopic end is movably connected to the bottom surface of the side cover 14. When the operator lifts the side cover 14 upward, the first hydraulic support rod 141 is driven upward by the internal pressure to generate an auxiliary thrust. After the side cover 14 is flipped to a preset angle, the first hydraulic support rod 141 uses the limit of its telescopic stroke and internal damping force to support the side cover 14 in the open position, thereby forming a temporary lateral sunshade and rain shelter space, and facilitating personnel to enter the carriage body 12 from the side to perform equipment storage and retrieval operations.

[0023] Meanwhile, side doors 15 are vertically hinged on both sides of the main body 12 of the carriage to facilitate personnel to retrieve materials from the side. A rear cover 17 that can be flipped upward is provided on the rear side of the main body 12 of the carriage. The top of the rear cover 17 is horizontally hinged to the upper edge of the rear frame of the main body 12 of the carriage. In order to achieve smooth opening and closing, two sets of second hydraulic support rods 18 are symmetrically connected to its bottom surface. One end of the second hydraulic support rod 18 is movably connected to the bottom edge of the rear cover 17, and its telescopic end is movably connected to the rear inner wall of the main body 12 of the carriage. The second hydraulic support rod 18 is configured to provide auxiliary thrust when the rear cover 17 is opened, and after flipping to the maximum angle, the damping force is used to maintain the opening posture of the rear cover 17, thereby exposing a wide opening at the rear of the carriage, which is convenient for loading and unloading large equipment.

[0024] Inside the main body 12 of the carriage, there is a horizontally fixed storage partition 16. The storage partition 16 is usually set with one or more layers depending on the height of the carriage. It is firmly fixed to the internal support frame of the main body 12 by welding or bolts. The storage partition 16 divides the interior of the carriage into different levels of storage space, which is suitable for classifying and storing rescue equipment, and avoids mutual squeezing or damage to the equipment due to stacking during transportation. In particular, there are two storage partitions 112 fixed on the inner wall of the main body 12 of the carriage. Specifically, there are two storage partitions 112 arranged vertically and horizontally. The storage partitions 112 are configured to be used to arrange, place and support neatly rolled fire hoses 113, ensuring stability and ventilation in the storage state.

[0025] like Figure 3 and Figure 4As shown, this embodiment is equipped with a storage component 2, which includes an equipment storage compartment 21. The overall structure is a box and is vertically connected to the trailer chassis 1 via a rotating shaft. The axis of the equipment storage compartment 21 is vertically set, and a support panel 22 is vertically provided on the equipment storage compartment 21. On one side of the support panel 22, multiple partition trays 23 are fixed at intervals along the vertical direction. The partition trays 23 are configured as shallow trays for classifying and placing scattered equipment such as demolition tools, handheld communication devices, or first aid kits. The vertical spacing design ensures the vertical utilization of space. On the other side of the support panel 22, several fixing clamps 24 are fixed. The fixing clamps 24 are usually composed of semi-circular metal buckles and locking mechanisms, which are used to reinforce the storage of cylindrical heavy equipment such as fire extinguishers, oxygen cylinders, or small breathing gas cylinders to prevent displacement or collision due to bumps during vehicle travel.

[0026] To ensure the safety of the storage compartment during operation and transportation, an electromechanical or mechanical limit lock 25 is provided at the bottom of the equipment storage compartment 21. When the equipment needs to be retrieved, the operator unlocks the limit lock 25 and rotates the equipment storage compartment 21 outward. When the compartment is rotated to the preset working angle or completely retracted into the truck bed, the limit lock 25 is used again to fix the compartment to the trailer chassis 1.

[0027] like Figures 7 to 11 As shown, this embodiment of the invention addresses the space-consuming issue of carrying a retractor when retrieving fire hoses 113 by providing a retractor execution assembly 3. This assembly 3 is supported by a support frame 31 fixed to the inner wall of the vehicle body 12. A rotating shaft 32 is horizontally connected through the support frame 31 and onto the vehicle body 12. A rotation limit block 321 is fixed to the end of the rotating shaft 32, and the limit block 321 has a stop block. A retractor spindle 33 is rotatably mounted on the limit block 321 for retracting. The main shaft 33 is mounted on the rotation limit block 321 by a pin damping mechanism. The stop block on the rotation limit block 321 acts as a mechanical stop and is configured to restrict the winding main shaft 33 to rotate only within a 90-degree range between the horizontal working position and the vertical stacking position. When winding is completed, the winding main shaft 33 rotates upward to the vertical state. At this time, the winding execution component 3 is in the stacking state, stored in the support frame 31 and close to the inner wall of the car body 12, thereby releasing the passage and cargo space in the middle of the car body 12.

[0028] A slotted reel 34, which can slide freely along the axial direction, is internally sleeved at one end of the winding spindle 33. The slotted reel 34 has symmetrical long grooves 341 axially opened on its surface. Right-angle pressure rods 35 are fixed on the outer surfaces of both the winding spindle 33 and the slotted reel 34 near their ends. During the initial winding stage, the right-angle pressure rods 35 are configured to press the folded end of the fire hose 113 to ensure that the hose does not slide relative to the winding spindle when it rotates. In order to achieve compact folding, when the slotted reel 34 retracts and slides towards the winding spindle 33, its corresponding right-angle pressure rods 35 are configured to fit snugly outside the winding spindle 33, avoiding mechanical interference during the extension and retraction process. Through this nesting design, the axial length of the component in the non-working state is reduced.

[0029] Furthermore, two sets of shaft end sleeves 36 are symmetrically fixedly embedded at the ends of both the winding spindle 33 and the slotted reel 34. The symmetrical long sliding grooves 341 opened on the slotted reel 34 are used to avoid the shaft end sleeves 36 fixed on the winding spindle 33. When the slotted reel 34 retracts into the winding spindle 33, the long sliding grooves 341 allow it to slide past the shaft end sleeves 36 fixed on the winding spindle 33. This adapter structure ensures the smoothness of the slotted reel 34 during the retraction process.

[0030] Furthermore, a limit stop bar 37 is rotatably connected inside the shaft end sleeve 36. The limit stop bar 37 has two states: horizontal and vertical. During the winding process, the limit stop bar 37 switches to the vertical state to prevent the fire hose 113 from falling off laterally. After winding is completed, the limit stop bar 37 switches to the horizontal state so that the fire hose 113 can be smoothly unwound.

[0031] To enable the limiting stop 37 to be locked in both horizontal and vertical states, mounting covers 38 are fixed on the sides of the two sets of shaft end sleeves 36 that are close to each other. A pin 39 is vertically and movably inserted inside the mounting cover 38. The two ends of the pin 39 are respectively movably inserted through the shaft end sleeve 36 and the mounting cover 38. The pin 39 has a raised edge at the position inside the mounting cover 38. At the same time, a return spring (not shown in the figure) is coaxially sleeved on the pin 39. The two ends of the return spring are connected to the raised edge and the bottom surface of the inner wall of the mounting cover 38, respectively. Under the continuous pressure of the return spring, the pin 39 always remains in the state of penetrating the mounting cover 38 and pushing outward.

[0032] Furthermore, in order to drive the pin 39 to lock, a locking shaft 310 is horizontally rotatably provided on the side of the winding spindle 33 and the slotted reel 34 near one end. At the same time, a locking member 311 is horizontally fixed through the inner wall on the same side. The locking member 311 has an internal threaded hole. One end of the locking shaft 310 has a threaded groove and is threadedly connected to the internal threaded hole in the locking member 311. A butterfly handle 312 is fixed at the other end of the locking shaft 310. A locking cam 313 with two protruding ends is fixedly sleeved on the locking shaft 310. The two protruding ends always abut against the pin 39.

[0033] When the operator rotates the butterfly handle 312, the locking shaft 310 rotates and drives the locking cam 313 to rotate. The protruding end of the locking cam 313 overcomes the resistance of the return spring and drives the pin 39 to move axially, so that its other end is inserted into the corresponding horizontal or vertical buckle hole on the limit stop 37. At the same time, the threaded connection structure provides locking force to prevent the locking shaft 310 from loosening, thereby achieving a rigid and stable lock on the limit stop 37. This effectively prevents the locking state from failing in the complex vibration environment of the rescue site. Since the width of the locking cam 313 is greater than the diameter of the pin 39, although a certain horizontal displacement occurs during the tightening process, the locking cam 313 is always kept in contact with the pin 39.

[0034] To solve the problem of water accumulation inside the hose during hose recovery, such as Figure 6 and Figure 9 As shown, this embodiment also includes a water squeezing guide assembly 4, which is located directly below the winding execution assembly 3. It mainly consists of a water squeezing bracket 41, water squeezing rollers 42, and a protective box 43. The water squeezing bracket 41 has a U-shaped groove structure and is fixedly installed on the trailer chassis 1. It serves as a water collection and support component. Water leakage grooves (not shown in the figure) are provided at the bottom of the water squeezing bracket 41 and at corresponding positions on the trailer chassis 1 to guide the squeezed water out of the vehicle and keep the inside of the vehicle dry. Two water squeezing rollers 42 are arranged parallel to each other in the water squeezing bracket 41, and the gap between them forms the passage path of the fire hose 113.

[0035] Specifically, one end of the squeezing roller 42 is rotatably supported on the outer wall of the squeezing bracket 41. It is worth noting that an opening gap is reserved between one end of the squeezing roller 42 and the inner wall of the squeezing bracket 41, forming a lateral opening structure. This opening gap is configured to allow the fire hose 113 in the initial state to be directly inserted into the two squeezing rollers 42 from the side, without having to pass the hose end through the roller gap, thus improving clamping efficiency. The other end of the squeezing roller 42 extends into the protective box 43 fixed to the inner wall of the carriage body 12. Inside the protective box 43, the end journals of the two squeezing rollers 42 are respectively keyed with intermeshing small gears (covered by the protective box 43 in the figure). This gear transmission structure ensures that the upper and lower squeezing rollers 42 can always maintain opposite synchronous rotation, thereby applying uniform squeezing force to the fire hose 113 passing through it, achieving efficient drainage.

[0036] like Figures 9 to 11 As shown, in order to enable a single person to simultaneously complete the winding and dewatering operations, the present invention uses a synchronous drive assembly to power couple the winding execution assembly 3 and the dewatering guide assembly 4. The synchronous drive assembly is mainly arranged on the outer side of the carriage body 12 and includes a drive gear 55, a hand crank 56, a driven gear 51, and a belt drive mechanism. The driven gear 51 is fixedly sleeved on one end of the rotating shaft 32 that extends out of the carriage. The drive gear 55 is rotatably mounted on the outer wall of the carriage body 12 through a short shaft and directly meshes with the driven gear 51. The hand crank 56 is fixedly connected to the shaft end of the drive gear 55. The operator can drive the driven gear 51 and the rotating shaft 32 to rotate by cranking the hand crank 56, thereby driving the winding main shaft 33 inside the carriage to rotate for winding.

[0037] Meanwhile, in order to drive the lower squeezing roller 42, a first pulley 52 is fixedly sleeved on the rotating shaft 32 and located inside the driven gear 51. A second pulley 54 is fixedly sleeved at the end of the lower set of squeezing rollers 42 that extends out of the protective box 43. A belt body 53 is tensioned between the first pulley 52 and the second pulley 54. When the rotating shaft 32 rotates, the belt body 53 synchronously drives the second pulley 54 to rotate, thereby driving the squeezing roller 42 to rotate. Through a reasonable transmission ratio design, the linear speed of the squeezing roller 42 is ensured to match the winding speed of the winding main shaft 33, realizing the linkage effect of squeezing water and winding at the same time. At the same time, a protective cover (not shown in the figure) can be detachably fixed on the outer side of the carriage body 12. This protective cover is used to cover the entire synchronous drive assembly.

[0038] In addition, to prevent the mechanism from reversing and loosening due to the tension of the water hose or gravity, an anti-reverse pawl 58 is installed on the support shaft 57 next to the drive gear 55, and a backstop block 59 is fixed on the side of the carriage body 12. A backstop spring (not shown in the figure) is connected between the anti-reverse pawl 58 and the backstop block 59, so that the anti-reverse pawl 58 always has the tendency to press against the drive gear 55. When the forward rocking is performed for winding, the anti-reverse pawl 58 slides over the tooth surface. When the rocking stops, the anti-reverse pawl 58 is locked into the tooth groove of the drive gear 55 under the action of the spring force, forming a ratchet and pawl type one-way lock to ensure that the winding process is safe and reliable.

[0039] In addition, to further improve operational efficiency and automation, and reduce the physical exertion of rescue personnel, the synchronous drive component in this embodiment can also be configured to input power through a drive unit. Specifically, the drive unit is, for example, a servo motor or a geared motor, and is fixedly installed on the main body 12 of the carriage. Its output end is connected to the drive gear 55 or the rotating shaft 32 through a coupling, chain drive, or gear meshing. The operator can control the start, stop, and direction of the drive unit through an electric control switch, thereby replacing or assisting the input torque of the hand crank 56 to realize the automated synchronous operation of the winding execution component 3 and the dewatering guide component 4.

[0040] Working principle: Upon arrival at the rescue site, the operator first disconnects the towing connection and secures the trailer chassis 1. Then, the side flaps 14 and rear flap 17 on both sides of the main body 12 are opened. The first hydraulic support rod 141 and the second hydraulic support rod 18 automatically extend to assist in opening and maintain support. At this time, rescue personnel can quickly retrieve various rescue equipment from the storage partition 16, the top storage frame 13, and the swivel-out equipment storage compartment 21 to engage in the firefighting operation. When the firefighting operation is completed and the fire hose 113 needs to be retrieved, the operator will... The winding execution component 3, which is in a vertically folded state, is rotated 90 degrees downward to a horizontal working position. At this time, the rotating limit block 321 restricts its continued downward rotation. Then, the slotted reel 34 is pulled outward to the maximum working length. The operator manually rotates the limit stop bar 37 on the slotted reel 34 and the winding main shaft 33 to the vertical position. The operator then drives the locking cam 313 by rotating the butterfly handle 312, which pushes the pin 39 to lock the limit stop bar 37, thereby forming a winding space that restricts the fire hose 113 from deviating.

[0041] When performing hose retrieval operations, operators do not need to laboriously carry the hose end through the roller gap. They only need to insert any section of the fire hose 113 to be retrieved directly from the side opening between the two squeezing rollers 42 of the squeezing guide assembly 4, and fix the hose end under the right-angle pressure bar 35 of the winding main shaft 33. Then, the operator turns the hand crank 56 to drive the drive gear 55 to rotate. On the one hand, the gear meshing drives the driven gear 51 and the rotating shaft 32 to rotate, driving the winding main shaft 33 to wind the hose. On the other hand, the belt body 53 drives the squeezing roller 42 below to rotate in the opposite direction. During this process, the squeezing roller 42 strongly squeezes the hose, and discharges the residual water through the drainage groove at the bottom of the squeezing bracket 41. The squeezed hose is then tightly wound on the winding main shaft 33 and the slotted winding shaft 34. The anti-reverse claw 58 is locked into the tooth groove under the action of the anti-reverse spring, effectively preventing the hose from reversing and loosening due to its own weight or tension, ensuring safe and labor-saving operation.

[0042] After the rewinding operation is completed, in order to remove the heavy hose reel, the operator loosens the butterfly handle 312 again, unlocks the limit stop bar 37 and lays it down to a horizontal position. At this time, the operator can smoothly remove the entire hose reel outward and place it on the storage partition 112. After the hose is removed, push the slotted reel 34 to make it slide axially into the inside of the rewinding main shaft 33. At this time, the long sliding groove 341 on the slotted reel 34 avoids the shaft end sleeve 36, and the right angle pressure bar 35 on it is engaged with the outside of the rewinding main shaft 33, which shortens the length of the entire reel assembly. Finally, flip the rewinding main shaft 33 upward to reset it to the vertical stacked state, rotate the equipment storage compartment 21 back and lock all the compartment doors to complete the rewinding operation.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A fire-fighting and rescue trailer, characterized in that, include The trailer chassis (1) has a tire assembly (11) installed at its bottom and a towing frame (110) fixed at its front end. The main body of the trailer (12) is fixed on the trailer chassis (1) and is used to form the loading space of the trailer; Storage component (2) is vertically rotatably mounted on the trailer chassis (1) for storing rescue equipment; The winding execution assembly (3) is installed on the inner wall of the main body (12) of the carriage, including a winding spindle (33) and a slotted reel (34) slidably installed on the winding spindle (33), for winding and retrieving the fire hose (113); The water squeezing guide assembly (4) is fixed on the trailer chassis (1) and below the winding execution assembly (3), and includes a water squeezing roller (42) for squeezing and draining the fire hose (113) during the winding process; A synchronous drive component is connected to the winding execution component (3) and the dewatering guide component (4) to drive the two to rotate synchronously so as to complete the dewatering operation at the same time as winding. The winding execution component (3) further includes a support frame (31), a rotating shaft (32), and a rotation limiting block (321). The support frame (31) is fixed to the inner wall of the carriage body (12) to provide support. The rotating shaft (32) is horizontally rotatably connected to the carriage body (12). The rotation limiting block (321) is fixed to one end of the rotating shaft (32) and has a stop block. The winding spindle (33) is rotatably mounted on the rotation limiting block (321). The rotation limiting block (321) is configured to limit the rotation angle of the winding spindle (33) by the stop block, so that it can only rotate within a preset range. When the winding spindle (33) rotates to the vertical state, the winding execution component (3) is configured to be in a coiled state.

2. The fire-fighting and rescue trailer according to claim 1, characterized in that, The winding execution assembly (3) further includes a right-angle pressure bar (35) and a shaft end sleeve (36). The surface of the slotted reel (34) is provided with a long sliding groove (341). The right-angle pressure bar (35) is fixed to the winding spindle (33) and the slotted reel (34) near one end of the outer surface, and is used to press the fire hose (113) to prevent it from loosening. It is configured such that when the slotted reel (34) is retracted into the winding spindle (33), the right-angle pressure bar... (35) The sleeve is attached to the outside of the winding spindle (33). Two sets of shaft end sleeves (36) are symmetrically embedded and fixed, and are respectively located near one end of the winding spindle (33) and the slotted reel (34). The long slide groove (341) is adapted to the position and shape of the shaft end sleeve (36) fixed on the winding spindle (33) so that the slotted reel (34) can be axially retracted into the inside of the winding spindle (33).

3. A fire-fighting and rescue trailer according to claim 2, characterized in that, The winding execution assembly (3) also includes a limit stop (37), a mounting cover (38), a pin (39), and a return spring. The limit stop (37) is rotatably disposed within the shaft end sleeve (36) and has two position states: horizontal and vertical. It is configured to prevent the water hose from falling off during winding in the vertical state and to assist in removing the wound water hose in the horizontal state. The mounting cover (38) is fixed on the adjacent side of the two sets of shaft end sleeves (36). The pin (39) is vertical. The movable part is disposed inside the mounting cover (38), with its two ends respectively moving through the shaft end sleeve (36) and the mounting cover (38). One end of the pin (39) is provided with a protruding edge. The return spring is coaxially sleeved on the pin (39) and located inside the mounting cover (38). Its two ends respectively abut against the protruding edge and the bottom surface of the inner wall of the mounting cover (38). It is configured to provide elastic restoring force to keep the pin (39) always in the state of passing through the mounting cover (38).

4. A fire-fighting and rescue trailer according to claim 3, characterized in that, The winding execution assembly (3) further includes a locking shaft (310) and a locking cam (313). The locking shaft (310) is horizontally rotatably disposed on the side of the winding spindle (33) and the slotted roll (34) near one end. The locking cam (313) is fixedly sleeved on the locking shaft (310) and has two protruding ends. The two protruding ends are configured to always abut against the two pins (39). The locking shaft (310) is configured to drive the locking cam (313) by rotation, and drive the pins (39) to move by the two protruding ends, so as to engage in the corresponding horizontal or vertical buckle hole on the limit stop (37) to limit the position state of the limit stop (37).

5. A fire-fighting and rescue trailer according to claim 4, characterized in that, The winding execution assembly (3) also includes a locking member (311) and a butterfly grip (312). The locking member (311) is horizontally fixed through one end of the inner wall of the winding spindle (33) and the slotted reel (34). The locking member (311) has an internal threaded hole. One end of the locking shaft (310) has a threaded groove and is threadedly connected to the internal threaded hole in the locking member (311). The butterfly grip (312) is fixed to the other end of the locking shaft (310). The width of the locking cam (313) is greater than the diameter of the locking shaft (310). The locking shaft (310) is configured to generate a threaded locking force by rotating the butterfly grip (312). In combination with the width feature of the locking cam (313), the limiting stop (37) is stably locked in a horizontal or vertical state.

6. A fire-fighting and rescue trailer according to claim 1, characterized in that, The dewatering guide assembly (4) further includes a dewatering bracket (41), a protective box (43), and a pinion. The dewatering bracket (41) is fixed on the trailer chassis (1), and its bottom has a drain groove for draining accumulated water. Two dewatering rollers (42) are arranged vertically and horizontally within the dewatering bracket (41). One end of each dewatering roller (42) is rotatably mounted on the inner wall of the dewatering bracket (41), and this end of the dewatering roller (42) is perpendicular to the inner wall of the dewatering bracket (41). The spacer is spaced apart and configured so that the fire hose (113) in its initial state passes through the space between the two squeezing rollers (42). The protective box (43) is fixed to the inner wall of the carriage body (12). The other ends of the two squeezing rollers (42) extend into the protective box (43) and are respectively connected to the meshing pinions. The pinions are configured to ensure that the two squeezing rollers (42) rotate synchronously in opposite directions to achieve the squeezing function of the fire hose (113).

7. A fire-fighting and rescue trailer according to claim 2, characterized in that, The synchronous drive assembly includes a driven gear (51), a first pulley (52), a second pulley (54), a belt body (53), a drive gear (55), and a hand crank (56). The driven gear (51) and the first pulley (52) are fixedly sleeved on one end of the rotating shaft (32), and the second pulley (54) is fixedly sleeved on the end of the squeezing roller (42). The belt body (53) connects the first pulley (52) and the second pulley (54). The drive gear (55) is rotatably mounted on the outer side of the carriage body (12) via a rotating shaft and meshes with the driven gear (51). The hand crank (56) is fixed on the drive gear (55) and is configured to simultaneously drive the winding execution assembly (3) and the squeezing guide assembly (4) through the drive gear (55).

8. A fire-fighting and rescue trailer according to claim 7, characterized in that, The synchronous drive assembly also includes a support shaft (57), an anti-reverse claw (58), and a backstop block (59). The support shaft (57) is disposed on the side of the main body of the carriage (12). The anti-reverse claw (58) is rotatably disposed on the support shaft (57). The backstop block (59) is fixed on the side of the main body of the carriage (12). A backstop spring is connected between the backstop block (59) and the anti-reverse claw (58). The anti-reverse claw (58) is configured to unidirectionally engage with the tooth groove of the drive gear (55) under the action of the backstop spring, in order to prevent the synchronous drive assembly from reversing due to the tension of the water hose.

9. A fire-fighting and rescue trailer according to claim 1, characterized in that, The storage component (2) includes an equipment storage compartment (21), a support panel (22), a partition tray (23), fixing clamps (24), and a limit lock (25). The equipment storage compartment (21) is vertically rotatably mounted on the trailer chassis (1). The support panel (22) is vertically slidably mounted inside the equipment storage compartment (21). The partition trays (23) are vertically spaced and fixed to one side of the support panel (22). Several fixing clamps (24) are fixed to the other side of the support panel (22). The limit lock (25) is located at the bottom of the equipment storage compartment (21) and is configured to lock the rotation angle of the equipment storage compartment (21).

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