A slewing mechanism for a fire service heavy artillery vehicle

Abstract

The utility model discloses a rotary mechanism for fire service heavy artillery car, including the fixed disc (1) of fixed on the base (101), its characterized in that: the fixed disc (1) is provided with rotatable carousel (2), the fixed disc (1) still is provided with the drive mechanism (3) for driving carousel (2) rotation, carousel (2) is installed with fire monitor base (4), carousel (2) can drive fire monitor base (4) rotation. The utility model can solve the problem of pipeline winding or sealing failure in traditional rotary platform.

Description

Technical Field

[0001] This utility model relates to a fire-fighting heavy-duty cannon vehicle, and more particularly to a slewing mechanism for a fire-fighting heavy-duty cannon vehicle. Background Technology

[0002] Fire trucks are core equipment for fighting fires, and they are typically equipped with fire monitors that can spray water from various angles. To achieve multi-angle fire suppression, traditional fire trucks require a dedicated rotating platform to be installed on the top of the vehicle or in a specific location, and the fire monitor is fixed to this platform. By driving the rotating platform to rotate, the fire monitor can be adjusted to adjust the horizontal spray angle, thereby expanding the coverage area.

[0003] However, existing rotary platform designs have the following drawbacks:

[0004] 1. Complex structure and large space occupation: The rotating platform needs to be installed independently on the vehicle body, including components such as bearings, drive motors, and slewing supports, which encroaches on the limited layout space of the fire truck and affects the configuration of other equipment (such as water tanks and ladders).

[0005] 2. High cost: The customized machining of the special rotary platform and the use of high-precision components (such as hydraulic rotary motors) lead to a significant increase in manufacturing costs.

[0006] 3. Difficult to maintain: The rotating platform is exposed to harsh environments (high temperature, water stains, corrosive substances) for a long time, and the mechanical parts are prone to wear and tear, requiring frequent maintenance and increasing the maintenance burden.

[0007] 4. Stability risk: The reaction force when the fire monitor sprays is large. If the rotating platform has insufficient structural strength, it may shake, affecting the spraying accuracy, or even causing mechanical failure.

[0008] Therefore, there is an urgent need for a solution that does not rely on an independent rotating platform, has a simplified structure, and can achieve multi-degree-of-freedom adjustment of the fire monitor, so as to improve the space utilization, reliability and economy of fire trucks. Summary of the Invention

[0009] The purpose of this invention is to provide a rotary mechanism for fire trucks.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A rotating mechanism for a fire truck includes a fixed plate (1) that can be fixed to a base (101), characterized in that:

[0012] The fixed disk (1) is provided with a rotatable turntable (2), and the fixed disk (1) is also provided with a drive mechanism (3) for driving the turntable (2) to rotate.

[0013] The turntable (2) is equipped with a fire monitor base (4), and the turntable (2) can drive the fire monitor base (4) to rotate.

[0014] Preferred:

[0015] The turntable (2) is a rotatable worm gear disc;

[0016] The drive mechanism (3) includes a motor (31) fixed on the fixed disk (1) and a worm gear (32) that can rotate under the drive of the motor (31).

[0017] The worm gear disk meshes with the worm (32) for transmission.

[0018] Preferred:

[0019] The fire monitor base (4) has a fire extinguishing material flow channel (5), which is rotatably connected to the fire extinguishing delivery pipe (6).

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. Simplified structure and high space utilization: By directly integrating the fixed plate into the base and using a worm gear transmission mechanism to drive the turntable, the complex bearings, turntable and other independent components of the traditional rotating platform are eliminated, which greatly reduces the space occupied by the mechanism, makes the fire truck layout more compact, and facilitates the optimized configuration of other key equipment (such as water tanks and ladders).

[0022] 2. Significant cost advantages: The standardized worm gear and worm drive structure reduces processing difficulty and manufacturing costs. At the same time, the modular design facilitates mass production and assembly, further improving economic efficiency.

[0023] 3. Improved ease of maintenance and reliability: The worm gear transmission has a self-locking characteristic, which can effectively resist the reaction force of the fire monitor and reduce the risk of shaking; and the closed structure design reduces the direct erosion of mechanical parts by the harsh external environment (high temperature, corrosion), reduces the wear rate and maintenance frequency, and extends the service life.

[0024] 4. Enhanced Dynamic Stability: The rotating design of the turntable and fire monitor base, combined with the rigid meshing characteristics of the worm gear drive, ensures that the fire monitor maintains high stability during high-pressure spraying, avoiding the offset or vibration caused by insufficient structural strength of traditional rotating platforms, and significantly improving spraying accuracy and operational safety.

[0025] 5. Highly efficient and reliable fluid transmission: The fire extinguishing material flow channel and delivery pipe adopt a rotatable connection structure, which can achieve multi-degree-of-freedom adjustment while ensuring continuous and leak-free delivery of fire extinguishing media, solving the problems of pipe entanglement or sealing failure in traditional rotating platforms.

[0026] In summary, this utility model, through structural innovation and transmission optimization, achieves precise adjustment of the fire monitor with multiple degrees of freedom, while also possessing comprehensive advantages such as space saving, cost control, easy maintenance, and stable operation, effectively overcoming the inherent defects of the prior art. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 This is a partial cross-sectional view of the present invention. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] See Figure 1 and Figure 2 As shown, this utility model discloses a rotating mechanism for a fire monitor 100. This rotating mechanism is mainly used to achieve horizontal rotation of the fire monitor 100. To achieve this purpose, the rotating mechanism includes a fixed plate 1, which is detachably fixed to a base 101 by bolts. Based on this, a rotatable turntable 2 is provided on the fixed plate 1. The turntable 2 is preferably a bearing mounted on the fixed plate 1. To drive the turntable 2 to rotate, a driving mechanism 3 is also provided on the fixed plate 1. (See also...) Figure 2 Preferably, the drive mechanism 3 uses a motor 31 as a power source to drive a worm gear 32 to rotate. Based on this, the turntable 2 is preferably a rotatable worm wheel. This worm wheel type turntable 2 meshes with the worm gear 32 for transmission. Thus, when the motor 31 works to drive the worm gear 32 to rotate, the worm gear 32 will drive the worm wheel type turntable 2, which meshes with it, to rotate. In this utility model, a fire monitor base 4 is installed on the turntable 2. See details below. Figure 2 As shown, the fire monitor base 4 is connected to the turntable 2 via a flange 41 and several bolts 42. In this way, the turntable 2 can drive the fire monitor base 4 mounted on it to rotate, and the rotation of the fire monitor base 4 can drive the fire monitor 100 mounted on it to rotate. This realizes that the motor 31 is used as a power source to drive the worm gear 32 to rotate, which in turn drives the turntable 2 to rotate, the turntable 2 to rotate the fire monitor base 4, and the fire monitor base 4 to rotate the fire monitor 100.

[0031] In addition, in this utility model, the fire monitor base 4 has a fire extinguishing material flow channel 5, which is formed by a tubular structure. The fire extinguishing material flow channel 5 includes an upper section 51 connected to the fire monitor base 4 and a lower section 52 connected to the fire extinguishing material delivery pipe 6. The upper section 51 and the lower section 52 are rotatably connected. In this utility model, there are ball bearings at the joint of the upper section 51 and the lower section 52. Under the action of the ball bearings, the upper section 51 and the lower section 52 can rotate relative to each other. Based on this, when the fire extinguishing material delivery pipe 6 is connected to the lower section 52, the rotation of the upper section 51 will not drive the lower section 52 to rotate. The lower section 52 does not rotate, so it will not drive the fire extinguishing material delivery pipe 6 connected to it to rotate or swing. In actual use, the fire extinguishing material delivery pipe 6 is a fire water pipe. In this way, under the above-mentioned rotation, the fire water pipe will not rotate or swing, thereby solving the problem of pipe entanglement in traditional rotating platforms. In addition, it can also solve the problem of sealing failure caused by loosening of the joint due to the rotation or swing of the fire water pipe.

[0032] In summary, this utility model directly integrates the fixed plate 1 onto the base 101 and uses a worm gear transmission mechanism to drive the turntable 2, eliminating the need for complex independent components such as bearings and turntables in traditional rotating platforms. This significantly reduces the space occupied by the mechanism, making the fire truck layout more compact and facilitating the optimized configuration of other key equipment (such as water tanks and ladders).

[0033] In addition, the adoption of standardized worm gear and worm drive structure reduces processing difficulty and manufacturing cost, while the modular design facilitates mass production and assembly, further improving economic efficiency.

[0034] Meanwhile, the worm gear transmission has a self-locking characteristic, which can effectively resist the reaction force of the fire monitor and reduce the risk of shaking; and the enclosed structure design reduces the direct erosion of mechanical parts by harsh external environments (high temperature, corrosion), reduces wear rate and maintenance frequency, and extends service life.

[0035] Meanwhile, the rotating design of the turntable 2 and the fire monitor base 4, combined with the rigid meshing characteristics of the worm gear drive, ensures that the fire monitor maintains high stability during high-pressure spraying, avoiding the deviation or vibration caused by insufficient structural strength of traditional rotating platforms, and significantly improving spraying accuracy and operational safety.

[0036] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A slewing mechanism for a fire-fighting heavy-duty fire truck, comprising a fixed plate (1) that can be fixed to a base (101), characterized in that: The fixed disk (1) is provided with a rotatable turntable (2), and the fixed disk (1) is also provided with a drive mechanism (3) for driving the turntable (2) to rotate. The turntable (2) is equipped with a fire monitor base (4), and the turntable (2) can drive the fire monitor base (4) to rotate.

2. The slewing mechanism for a fire-fighting heavy-duty fire truck according to claim 1, characterized in that: The turntable (2) is a rotatable worm gear disc; The drive mechanism (3) includes a motor (31) fixed on the fixed disk (1) and a worm gear (32) that can rotate under the drive of the motor (31). The worm gear disk meshes with the worm (32) for transmission.

3. The slewing mechanism for a fire-fighting heavy-duty fire truck according to claim 1, characterized in that: The fire monitor base (4) has a fire extinguishing material flow channel (5), which is rotatably connected to the fire extinguishing delivery pipe (6).

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