CN105983193B

CN105983193B - Linkage rotary joint for fire monitor

Info

Publication number: CN105983193B
Application number: CN201510058589.5A
Authority: CN
Inventors: 陈彩红
Original assignee: 陈彩红
Current assignee: Zhejiang Chengshi robot Co.,Ltd.
Priority date: 2015-02-05
Filing date: 2015-02-05
Publication date: 2021-11-19
Anticipated expiration: 2035-02-05
Also published as: CN105983193A

Abstract

The utility model provides a fire gun of fire-fighting apparatus field is with linkage rotary joint, includes: rotate single return bend, gyration seat and the double-bending pipe of connection in proper order, wherein: the single bent pipe, the rolling body arranged between the single bent pipe and the rotary seat form a first rotary pair, and the double bent pipe, the rolling body arranged between the double bent pipe and the rotary seat form a second rotary pair. The fire monitor has the advantages that the fire monitor is small in overall dimension and convenient to install and move, meanwhile, the fire extinguishing agent does not need to turn for a plurality of times at a large angle in a bent pipe flow channel, the flow loss is small, and the jet state at the outlet end is less limited.

Description

Linkage rotary joint for fire monitor

Technical Field

The invention relates to a technology in the technical field of fire-fighting equipment, in particular to a linkage rotary joint for a fire monitor.

Background

The fire monitor is one of necessary equipment of fire-fighting vehicles, and is widely applied to fire-fighting occasions such as high-rise buildings, underground buildings, tunnels, subways, industrial and mining enterprises and the like. In the fire-fighting work, the fire extinguishing agent can be directly sprayed on the comburent to extinguish fire by spraying the direct-current water column, the water mist can be sprayed to cool down, the radiant heat is reduced, the individual protection effect on fire fighters is realized to the greatest extent, the fire fighters can rapidly carry out emergency rescue, the fighting capacity of fire fighters is fully developed, and the disaster loss is reduced to the greatest extent.

The pitching rotary joint of the current general fire monitor can realize the pitching function only by being assisted with four 90-degree bent pipes and a plurality of straight pipes, so that the fire monitor is huge in overall dimension and inconvenient to install and move, meanwhile, a fire extinguishing agent needs to turn for a plurality of times at a large angle in a flow channel of the bent pipe, the flow loss is large, and the jet state at an outlet end is greatly limited.

Through the search of the prior art, Chinese patent document No. CN203342250, published as 2013.12.18, discloses an improved fire monitor. This fire gun includes: the gun body comprises a gun head, a gun body and a water hose interface, wherein the left end of the gun body is connected with the gun head through a rotary joint, the right end of the gun body is arranged to be an upward vertical pipe part, and the water hose interface is arranged above the vertical pipe part of the gun body. However, although the technology solves the problem of water inlet pipeline kinking of a fire monitor erected on a walking chassis in the chassis movement process, compared with the existing universal pitching mechanism, the pitching mechanism still needs four 90-degree bent pipes and a plurality of straight pipes, is large in shape and size and inconvenient to install and move, and meanwhile, a fire extinguishing agent needs to turn in a bent pipe flow channel for a plurality of times at large angles, so that the overflowing loss is large, and the jet flow state of an outlet end is greatly limited.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the linkage rotary joint for the fire monitor, which consists of two rotating components arranged in series and a pipeline with a specific shape, can realize the pitching and rotating functions of the fire monitor, has a compact and brief structure and smaller overflow loss, and can obviously improve the jet state at the outlet end of the fire monitor.

The invention is realized by the following technical scheme:

the invention comprises the following steps: rotate single return bend, gyration seat and the double-bending pipe of connection in proper order, wherein: the single bent pipe, the rolling body arranged between the single bent pipe and the rotary seat form a first rotary pair, and the double bent pipe, the rolling body arranged between the double bent pipe and the rotary seat form a second rotary pair.

The rolling bodies are arranged between the outer wall of the single bent pipe and the rotary seat or between the inner wall of the double bent pipe and the rotary seat, so that two corresponding revolute pairs are formed.

The single bent pipe, the rotary seat and the double bent pipes are provided with ball grooves to form a roller path after combination.

The double bent pipe is of an S-shaped structure.

The elevation angle range of the outlet end of the fire monitor is [ 90-lambda- (beta + gamma), 90-lambda + (beta + gamma) ] wherein: lambda is the included angle between the inlet axis and the outlet axis of the single bent pipe, beta is the included angle between the inlet axis and the outlet axis of the double bent pipe, and gamma is the included angle between the inlet axis and the outlet axis of the rotary seat.

Technical effects

Compared with the prior art, the volume and the weight of the fire extinguishing agent are greatly reduced, the fire extinguishing agent does not need to make a large-angle turn for many times in a bent pipe flow channel, the overflowing loss is reduced, and the jet flow state at the outlet end is more ideal, so that the directional jet range of the fire extinguishing agent can be more effectively controlled during fire fighting, the energy required by spraying the fire extinguishing agent with the same dosage is greatly reduced, a fireman is more time-saving and labor-saving in the fire fighting operation process, the operation is more convenient and faster, and the quick, efficient and good fire fighting effect can be more favorably achieved.

Drawings

FIG. 1 is a schematic view of the structure of the extreme position I of the rotary joint of the present invention.

FIG. 2 is a schematic view of the structure of the extreme position II of the rotary joint of the present invention.

Fig. 3 is a schematic view of a single bend configuration of the present invention.

Fig. 4 is a schematic structural view of a double elbow of the present invention.

Fig. 5 is a schematic structural view of the turret of the present invention.

Detailed Description

The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.

Example 1

As shown in fig. 1 and 2, the present embodiment includes: rotate single return bend 1, the seat of gyration 3 and two return bends 2 of connecting in proper order, wherein: the single bent pipe 1, the rolling body 4 arranged between the inner wall of the single bent pipe 1 and the rotary seat 3 form a first rotary pair, and the double bent pipe 2, the rolling body 4 arranged between the outer wall of the double bent pipe 2 and the rotary seat 3 form a second rotary pair, so that pitching and rotation of the fire monitor are realized.

In this embodiment, the inlet end of the single bent pipe 1 is connected to an upstream pipeline, the outlet end of the single bent pipe 1 is connected to the inlet end of the rotary base 3, and the outlet end of the double bent pipe 2 is provided with a thread or a flange for connecting a nozzle of a fire monitor.

The first rotating pair and the second rotating pair can be driven by two independent power sources or can be driven by one power source through a transmission mechanism.

In different occasions, the rolling bodies 4 can also be arranged between the outer wall of the single bent pipe 1 and the rotary seat 3 and between the inner wall of the double bent pipe 2 and the rotary seat 3, so as to form two corresponding revolute pairs.

The single bent pipe 1, the rotary seat 3 and the double bent pipe 2 are provided with the ball grooves 6 to form a roller path after combination, so that rolling of the rolling body is realized.

As shown in fig. 3, the inlet axis EG and the outlet axis FG of the single elbow 1 intersect at a point G, and the included angle (acute angle) between EG and FG is λ;

as shown in fig. 4, the double elbow 2 has an S-shaped structure, the inlet axis AP and the outlet axis OBA intersect at point a, the included angle (acute angle) between the axis AP and the axis OBA is β, and the included angle (acute angle) between the central axis PB of the transition section 5 and the outlet axis OBA is α;

the transition section 5 is an arc pipe with the radius R, and an arc transition with the radius R is arranged between the transition section and the outlet end.

As shown in fig. 5, the included angle (acute angle) between the inlet axis CQ and the outlet axis DQ of the turret 3 is γ;

the above-mentioned axis is generally understood in the art as a central axis of symmetry.

As shown in fig. 3 to 5, the angle between the inlet axis AP and the outlet axis OBA of the double bend 2 is equal to the angle between the inlet axis and the outlet axis of the turret 3, i.e. β ═ γ; the advantages of such a design are: after the device is assembled, the point A on the double-bent pipe 2 coincides with the point Q on the rotary seat 3, and the condition is provided that the outlet axis OBA of the double-bent pipe 2 is positioned in a plane formed by the inlet axis EG and the outlet axis FG of the single-bent pipe 1.

Preferably, the angle between the inlet axis AP and the outlet axis OBA of the double bend 2 is equal to half the angle between the inlet axis EG and the outlet axis FG of the single bend 1, i.e. half the angle between the inlet axis EG and the outlet axis FG of the single bend 1

The advantages of such a design are: the values of three angles of lambda, beta and gamma are minimized, so that the size and the weight can be reduced on one hand, and the flow channel can be optimized on the other hand, so that the overflowing loss of the fire extinguishing agent in the flow channel is minimized.

The cross-section of the inner walls of the single elbow 1, the turret 3 and the double elbow 2 in this embodiment are preferably circular, but different specific shapes may be used in other applications. These shapes are preferably centrosymmetric geometries to facilitate the formation of revolute pairs.

As shown in fig. 1, in order to make the conclusion of the technical solution universal, it is not assumed that the water inlet direction EG of the single-bend pipe 1 is the direction of the elevation angle of 90 °, and therefore, the elevation angle of the fire monitor is the following: 90 ° - λ - (. beta. + γ).

As shown in fig. 2, in the state of the fire monitor with the largest elevation angle at the outlet end, in combination with the above definition, the effect of β and γ on the elevation angle is opposite to the effect of λ on the elevation angle, and the water inlet direction EG of the single bent pipe 1 is the direction of the elevation angle of 90 °, so the elevation angle of the fire monitor is: 90 ° - λ + (β + γ).

Under the above conditions, the initial attitude of the fire monitor is assembled and debugged as shown in fig. 1 or 5, the first revolute pair and the second revolute pair are driven in a linkage manner (such as gear transmission or electrical linkage), so that the elevation angle of the fire monitor can be continuously changed, and in an elevation angle state, the outlet axis OBA of the double elbow pipe 2 can be located in a plane formed by the inlet axis EG and the outlet axis FG of the single elbow pipe 1.

Claims

1. The utility model provides a fire gun is with linkage rotary joint which characterized in that includes: rotate single return bend, gyration seat and the double-bending pipe of connection in proper order, wherein: the single bent pipe, the rolling body arranged between the single bent pipe and the rotary seat form a first rotary pair, the double bent pipe, the rolling body arranged between the double bent pipe and the rotary seat form a second rotary pair, the outlet end of the double bent pipe is provided with a thread or a flange used for connecting a nozzle of a fire monitor, and the water inlet direction of the single bent pipe is the direction with an elevation angle of 90 degrees;

the rolling bodies are arranged between the outer wall of the single bent pipe and the rotary seat or between the inner wall of the double bent pipe and the rotary seat, so that two corresponding revolute pairs are formed;

the inner wall sections of the single bent pipe, the rotary seat and the double bent pipe are circular;

the single bent pipe, the rotary seat and the double bent pipes are provided with spring grooves to form a raceway after combination, so that rolling of the rolling bodies is realized;

the first rotating pair and the second rotating pair are driven by two independent power sources or driven by one power source through a transmission mechanism;

the double bent pipe is of an S-shaped structure, and the included angle between the inlet axis and the outlet axis of the double bent pipe is equal to the included angle between the inlet axis and the outlet axis of the rotary seat and is equal to half of the included angle between the inlet axis and the outlet axis of the single bent pipe;

the elevation angle range of the outlet end of the fire monitor is [ 90-lambda- (beta + gamma), 90-lambda + (beta + gamma) ] wherein: lambda is the included angle between the inlet axis and the outlet axis of the single bent pipe, beta is the included angle between the inlet axis and the outlet axis of the double bent pipe, and gamma is the included angle between the inlet axis and the outlet axis of the rotary seat;

the outlet axis of the double elbow is in the plane formed by the inlet axis and the outlet axis of the single elbow.