Forest fire pump

Abstract

The utility model discloses a forest fire pump relates to fire fighting equipment technical field, aims at solving the problem of poor moving ability of the existing forest fire pump moving frame, and the insufficient stability when working. The fire pump includes mobile part and water pump part, and the flexible movement of complex terrain is realized through four wheel synchronous steering mechanism of mobile part, and the climbing ability is promoted in cooperation with the wheel stand with double wheels, and the fixed mechanism of the base two sides can be fastened to the ground through screw, and the working stability is enhanced. The utility model is compact, is applicable to complex environment such as forest, mountainous area etc.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically a forest fire pump. Background Technology

[0002] Forest fire pumps are core equipment for fighting forest fires. They draw water from natural sources (such as streams, lakes, and depressions) and pressurize it to provide continuous water support for frontline firefighting operations, playing an irreplaceable role in dealing with different types of fires, including crown fires and surface fires. Due to the complex terrain of forests and mountainous areas, which often feature steep slopes, dense vegetation, uneven ground, and abundant gravel and weeds, extremely high requirements are placed on the mobility, terrain adaptability, and operational stability of fire pumps. In existing technologies, the movement of forest fire pumps mainly relies on two types of structures: one is a simple mobile frame with one or two wheels. Although this type of structure is lightweight, it is clumsy in steering and is prone to tilting on terrain with a slope of more than 15°. When a single wheel contacts the ground, it is easy to sink into soft soil or get stuck by tree roots. The other type is a fixed multi-wheeled frame. Although it can support a relatively heavy pump body, the steering mechanism is a rigid connection, which cannot achieve synchronous steering of all four wheels. In narrow forest passages (less than 1.5 meters wide), the turning radius is too large, making it difficult to move through dense forest areas.

[0003] Regarding stability, existing mobile frames are mostly fixed using simple support legs or friction positioning. When the fire pump is operating, engine vibration is transmitted to the wheels through the frame, causing the entire equipment to sway periodically on soft ground or slopes. This not only affects the stability of the pump's water pressure (pressure fluctuations can reach ±0.2MPa), but may also cause loosening of pipe joints and wear of seals due to long-term vibration, increasing the probability of failure. In addition, some mobile frames do not consider the compatibility between the pump and the frame, resulting in a high center of gravity after pump installation, further exacerbating instability during operation.

[0004] Meanwhile, water sources in forest environments are often mixed with impurities such as mud, sand, dead branches, and fallen leaves. Existing fire pumps lack targeted filtration structures in their input pipes, frequently experiencing problems such as impeller jamming and inlet blockage, requiring shutdown for cleaning and severely impacting firefighting efficiency. These deficiencies make it difficult for existing forest fire pumps to meet the practical requirements of "rapid deployment, stable operation, and efficient water delivery" in actual firefighting operations. Therefore, there is an urgent need for a new type of forest fire pump that can adapt to complex terrain and improve operational stability. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a forest fire pump that solves the problems of weak mobility of existing forest fire pump mobile frames in complex terrain and insufficient stability due to poor support and fixation during operation.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a forest fire pump: comprising a mobile part and a pump part, wherein the pump part is mounted on the mobile part, and the mobile part carries the pump part to achieve convenient movement in the forest; The moving part includes a base, a four-wheel synchronous steering mechanism, and wheels. The four-wheel synchronous steering mechanism includes two sets of racks, gears, connecting rods 1, 2, and 3, and a set of connecting rods. The racks are laterally slidably connected to the bottom surface of the base, and the gears are rotatably connected to the bottom surface of the base. The gears mesh with the racks. One end of connecting rod 1 is hinged to one side of the rack, and the other end is hinged to connecting rod 2. The other end of connecting rod 2 is connected to connecting rod 3. The connection point between connecting rod 3 and connecting rod 2 is hinged to the bottom surface of the base. The outer end face of connecting rod 3 is rotatably connected to the wheels. The two ends of the set of connecting rods are respectively hinged to the upper and lower gears. One of the gears is connected to a rotating rod, and the other end of the rotating rod is connected to a pull rod. By rotating the pull rod, the rotating rod is driven to rotate, which drives the gear to rotate, thereby driving the rack to rotate. The wheels are driven to rotate through connecting rods 1, 2, and 3. At the same time, the upper gear drives the lower gear to rotate through the set of connecting rods, thereby driving the lower wheel to rotate.

[0007] Preferably, the outer end faces of the connecting rod are rotatably connected to the wheel frame, and the wheels are rotatably connected to both sides of the wheel frame. The ability of the moving part to crawl in forest terrain is improved by the wheel frame and a set of wheels rotatably set on the wheel frame.

[0008] Preferably, the water pump unit includes an engine, a gearbox, and a water pump body. The output shaft of the engine is connected to the gearbox, the output shaft of the gearbox is connected to the water pump body, and the water pump body includes an input pipe and an output pipe.

[0009] Preferably, a fixing mechanism is provided on both sides of the base. The fixing mechanism includes a fixing frame, a threaded hole is provided on the fixing frame, a screw is engaged in the threaded hole, and a rotating disk is provided on the top of the screw.

[0010] Preferably, the base is provided with an arc-shaped groove on the side near the rotating rod, and the rotating rod is slidably connected to the arc-shaped groove by a slide rod, thereby improving the guidance and stability of the rotating rod's rotation.

[0011] This utility model provides a forest fire pump. It has the following beneficial effects: 1. This utility model, through a four-wheel synchronous steering mechanism combined with a two-wheel wheel frame, greatly improves the mobility and steering flexibility of the mobile unit in complex forest terrain (such as steep slopes, gravel ground, and grass), and solves the problems of traditional mobile units being prone to jamming and difficult to control.

[0012] 2. The fixing mechanism on both sides of the base of this utility model can be quickly screwed into the ground with screws with tapered tips, ensuring the stability of the fire pump during operation and avoiding shaking or displacement caused by vibration. Attached Figure Description

[0013] Figure 1 This utility model provides an isometric view of a forest fire pump. Figure 1 ; Figure 2 This utility model provides an isometric view of a forest fire pump. Figure 2 ; Figure 3 This is a bottom view of a forest fire pump according to the present invention; Figure 4 This is a side view of a forest fire pump according to the present invention.

[0014] In the diagram: 1. Base, 2. Rack, 3. Gear, 4. Connecting rod 1, 5. Connecting rod 2, 6. Connecting rod 3, 7. Linking rod, 8. Wheel, 9. Rotating rod, 10. Tie rod, 11. Engine, 12. Gearbox, 13. Water pump body, 14. Input pipe, 15. Output pipe, 16. Fixing bracket, 17. Screw, 18. Rotating disc, 19. Arc groove, 20. Slide rod, 21. Wheel bracket. Detailed Implementation

[0015] This utility model provides a forest fire pump. As shown in Figures 1-4, it includes a moving part and a pump part. The pump part is fixed to the upper surface of the base 1 of the moving part by four M10 bolts. The base (1) is cut from a Q235 steel plate with a thickness of 8mm, with a length of 800mm and a width of 500mm. Two parallel slide rails are laser-welded to the bottom. The slide rails have a "U" shaped cross section for the lateral sliding of the rack 2. In the four-wheel synchronous steering mechanism of the moving part, the rack 2 is forged from 45# steel, with a length of 300mm and a tooth pitch of 5mm. It meshes with a gear 3 with a module of 2. The gear (3) is rotatably connected to the bearing seat on the bottom surface of the base 1 through a deep groove ball bearing (model 6204). The connecting rod 1 4, connecting rod 2 5, and connecting rod 3 6 are all 45# steel round rods with a diameter of 20mm. They are hinged by a pin with a diameter of 8mm and chrome-plated for rust prevention. The connecting rod 7 is made of high-strength aluminum alloy and is 250mm long. Both ends are connected to the eccentric shafts of the upper and lower gears 3 through spherical bearings.

[0016] The wheel frame 21 is a stamped steel plate structure with a thickness of 5mm. The wheels 8 are connected to both sides via tapered roller bearings (model 30203). The wheels 8 have a diameter of 300mm, are made of high-elasticity rubber, and have a deeply serrated tread pattern. The ground pressure is ≤0.3MPa, allowing them to travel on soft ground without getting stuck. The tie rod 10 is a telescopic structure, made of 25mm diameter aluminum alloy tubing, with a maximum extension length of 1200mm. It has a rubber anti-slip grip at the end.

[0017] In the water pump section, engine 11 is a single-cylinder four-stroke gasoline engine with a displacement of 380cc and a maximum power of 10kW. It is connected to the reduction gearbox 12 via a flexible coupling. The reduction gearbox 12 has a transmission ratio of 2:1 and an output shaft speed of 1500r / min. The water pump body 13 is a single-stage centrifugal pump with an impeller diameter of 120mm, a maximum flow rate of 50m³ / h, and a maximum head of 80m. Both the inlet pipe 14 and the outlet pipe 15 are 50mm diameter aluminum alloy pipes. The inlet pipe 14 is 3m long, and the filter cover 22 at the end is made of stainless steel with a 5mm aperture. It is connected to the inlet pipe 14 via a clip for easy disassembly and cleaning.

[0018] The fixing frame 16 of the fixing mechanism is welded to both sides of the base 1. The screw 17 is an M20×300mm trapezoidal threaded screw made of 40Cr material with a galvanized surface for rust prevention. The rotating disk 18 has a diameter of 100mm and several evenly distributed operating rods on its edge, which can be manually and quickly screwed into the ground. The cone tip has a 30° cone angle and a hardness of HRC50, allowing it to penetrate rock layers with a hardness ≤5MPa. The arc groove 19 has a radius of 300mm, and the slide rod 20 has a diameter of 10mm, with a 0.5mm clearance between it and the arc groove 19.

[0019] Working principle Steering principle: The operator pulls the lever 10 to drive the rotating rod 9 to rotate around the axis of the gear 3. The gear 3 meshes with the rack 2, causing the rack 2 to slide laterally along the slide rail at the bottom of the base 1. The sliding of the rack 2 pushes the connecting rod 2 5 through the connecting rod 1 4. The connecting rod 2 5 rotates around the hinge point with the base 1, which in turn drives the connecting rod 3 6 to swing, thus realizing the steering of the wheel 8. At the same time, the upper gear 3 drives the lower gear (3) to rotate synchronously in the opposite direction through the connecting rod 7, so that the upper and lower sets of wheels 8 can achieve coordinated steering. The minimum turning radius is ≤1.2m, which meets the steering requirements of narrow forest passages. The sliding rod 20 slides in the arc groove 19, which guides the rotating rod 9.

[0020] Fixed and stable principle: When the equipment is moved to the work point, the rotating disk 18 on the fixed frame 16 is rotated so that the conical tip 23 at the bottom of the screw 17 is screwed into the ground. The base 1 is fixed to the ground by two symmetrically distributed screws 17. Combined with the ground support of the wheel 8, a five-point stable support structure is formed, so that the amplitude of the equipment when the engine 11 is working is ≤0.5mm, and the water pump pressure fluctuation is ≤±0.05MPa.

[0021] Water conveyance working principle: After the engine 11 starts, power is transmitted to the impeller of the water pump body 13 via the reduction gearbox 12. The high-speed rotation of the impeller generates centrifugal force, which pressurizes the water drawn in through the input pipe 14 and discharges it through the output pipe 15. The filter cover 22 at the end of the input pipe 14 filters impurities such as mud, sand, and dead branches from the water source, preventing them from entering the water pump body 13 and causing impeller jamming. The flexible coupling of the engine 11 and the smooth output of the reduction gearbox 12 ensure smooth operation of the water pump, reduce vibration transmission to moving parts, and further improve the stability of the equipment.

[0022] Other features (not shown in the diagram) include a filter cover added to the water pump section that effectively protects the water pump body, reduces the probability of failure, extends the service life of the equipment, and is more suitable for the environment of forest water sources with many impurities.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forest fire pump, characterized in that: It includes a mobile unit and a water pump unit, wherein the water pump unit is mounted on the mobile unit, and the mobile unit carries the water pump unit to enable convenient movement in the forest; The moving part includes a base (1), a four-wheel synchronous steering mechanism, and wheels (8). The four-wheel synchronous steering mechanism includes a set of racks (2) on the upper and lower sides, a gear (3), a first connecting rod (4), a second connecting rod (5), a third connecting rod (6), and a set of connecting rods (7). The racks (2) are laterally slidably connected to the bottom surface of the base (1). The gears (3) are rotatably connected to the bottom surface of the base (1). The gears (3) mesh with the racks (2). One end of the first connecting rod (4) is hinged to one side of the rack (2), and the other end is hinged to the second connecting rod (5). The other end of the second connecting rod (5) is connected to the third connecting rod (6). The connection point between the third connecting rod (6) and the second connecting rod (5) is... Hinged to the bottom surface of the base (1), the outer end face of the connecting rod three (6) is rotatably connected to the wheel (8). The two ends of a set of connecting rods (7) are respectively hinged to the upper and lower gears (3). One of the gears (3) is connected to a rotating rod (9). The other end of the rotating rod (9) is connected to a pull rod (10). By rotating the pull rod (10), the rotating rod (9) is driven to rotate, which drives the gear (3) to rotate, thereby driving the rack (2) to move in linkage. The wheel (8) is driven to rotate through the connecting rod one (4), the connecting rod two (5), and the connecting rod three (6). At the same time, the upper gear (3) drives the lower gear (3) to rotate through a set of connecting rods (7), thereby driving the lower wheel to move in linkage.

2. A forest fire pump according to claim 1, characterized in that: The outer end face of the connecting rod (6) is rotatably connected to the wheel frame (21), and the wheels (8) are rotatably connected to both sides of the wheel frame (21). Through the wheel frame (21) and a set of wheels (8) rotatably set on the wheel frame (21), the crawling ability of the moving part in the forest terrain is improved.

3. A forest fire pump according to claim 1, characterized in that: The water pump unit includes an engine (11), a gearbox (12) and a water pump body (13). The output shaft of the engine (11) is connected to the gearbox (12), and the output shaft of the gearbox (12) is connected to the water pump body (13). The water pump body (13) includes an input pipe (14) and an output pipe (15).

4. A forest fire pump according to claim 1, characterized in that: The base (1) is provided with a fixing mechanism on both sides. The fixing mechanism includes a fixing frame (16). The fixing frame (16) has a threaded hole. A screw (17) is engaged in the threaded hole. A rotating disk (18) is provided on the top of the screw (17).

5. A forest fire pump according to claim 1, characterized in that: The base (1) has an arc groove (19) on the side near the rotating rod (9). The rotating rod (9) is slidably connected to the arc groove (19) by a slide rod (20), which improves the guidance and stability of the rotation of the rotating rod (9).

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