阅读说明：本技术 一种消防车后爬梯 (Rear crawling ladder of fire fighting truck ) 是由 李响 谢奕波 王双亮 鞠大为 李世奇 谢鹰 解颖 于 2019-11-22 设计创作，主要内容包括：本发明涉及消防车技术领域,尤其涉及一种消防车后爬梯。包括固定梯子、旋转梯子、导轨总成与伸缩杆；导轨总成固定在消防车箱体后面,伸缩杆一端固定在固定梯子上,伸缩杆另一端与导轨总成滑动连接,旋转梯子铰接在固定梯子底部；旋转梯子向上翻转收纳在固定梯子内,固定梯子连同伸缩杆滑动至导轨总成内实现后爬梯整体收纳,固定梯子连同伸缩杆滑动至消防车箱体外部,旋转梯子向下翻转实现后爬梯支起。不使用时能够实现收纳,不影响消防车的正常使用和同行,使用时固定牢固,容易攀登,为消防人员方便、快速、安全的登上车顶进行消防炮的操作及取用车顶器材提供了保障。(The invention relates to the technical field of fire engines, in particular to a rear crawling ladder of a fire engine. Comprises a fixed ladder, a rotary ladder, a guide rail assembly and a telescopic rod; the guide rail assembly is fixed at the back of the fire fighting truck box body, one end of the telescopic rod is fixed on the fixed ladder, the other end of the telescopic rod is connected with the guide rail assembly in a sliding manner, and the rotary ladder is hinged to the bottom of the fixed ladder; rotatory ladder upset upwards is accomodate in fixed ladder, and fixed ladder slides to realize the whole accomodating of back cat ladder in the guide rail assembly together with the telescopic link, and fixed ladder slides to the fire engine box outside together with the telescopic link, and the upset downwards of rotatory ladder realizes the back cat ladder and prop up. Can realize accomodating when not using, do not influence the normal use and the peer of fire engine, it is fixed firm during the use, easy climbing provides the guarantee for the convenient, quick, safe operation of going up the roof and carrying out the fire gun and taking the roof equipment of fire fighter.)

1. The utility model provides a cat ladder behind fire engine which characterized in that: comprises a fixed ladder, a rotary ladder, a guide rail assembly and a telescopic rod; the guide rail assembly is fixed at the back of the fire fighting truck box body, one end of the telescopic rod is fixed on the fixed ladder, the other end of the telescopic rod is connected with the guide rail assembly in a sliding manner, and the rotary ladder is hinged to the bottom of the fixed ladder; rotatory ladder upset upwards is accomodate in fixed ladder, and fixed ladder slides to realize the whole accomodating of back cat ladder in the guide rail assembly together with the telescopic link, and fixed ladder slides to the fire engine box outside together with the telescopic link, and the upset downwards of rotatory ladder realizes the back cat ladder and prop up.

2. The fire fighting truck rear ladder of claim 1, characterized in that: the guide rail assembly comprises a shell, a pressing wheel and a knob type fixing pin, wherein the pressing wheel is arranged on the shell; the telescopic link is installed between two pinch rollers from top to bottom, and the telescopic link slides along the pinch roller, and is fixed through knob type fixed pin after sliding.

3. The fire fighting truck rear ladder of claim 1, characterized in that: the ladder is characterized by further comprising a sealing plate, pedals, upper handrails and side handrails, wherein the sealing plate is fixed on the side face of the fixed ladder, the side handrails are fixed on the sealing plate, the pedals are fixed at the top of the fixed ladder, and the upper handrails are fixed on the pedals.

4. The fire fighting truck rear ladder of claim 1, characterized in that: the section of the telescopic rod is rhombic.

5. The fire fighting truck rear ladder of claim 1, characterized in that: the first limiting block and the second limiting block are matched with each other, the first limiting block is provided with an opening with inclination, the first limiting block is fixed on the fixed ladder, the second limiting block is provided with an bulge matched with the opening, the second limiting block is fixed on the rotary ladder, and the opening is clamped on the bulge after the rotary ladder is opened downwards, so that the rotary ladder is in an inclined state after being opened downwards.

Technical Field

The invention relates to the technical field of fire engines, in particular to a rear crawling ladder of a fire engine.

Background

The fire truck, also called fire truck, is designed and manufactured to be suitable for firefighters to take and equip various fire-fighting equipment or fire extinguishing agents according to requirements, and is used for fire extinguishing, auxiliary fire extinguishing or fire rescue for fire-fighting troops, and most of national fire departments including China can also be used for other emergency rescue purposes. The fire engine can transport firefighters to a disaster site and provide a variety of tools for performing disaster relief tasks. Modern fire trucks are usually equipped with steel ladders, water guns, portable fire extinguishers, self-contained respirators, protective clothing, breaking and dismantling tools, first-aid tools and the like, and some fire extinguishing devices can also carry large fire extinguishing equipment such as water tanks, water pumps, foam fire extinguishing devices and the like.

The fire fighter is at the fire control fire extinguishing process, often need to climb on fire engine roof operation fire monitor or take the roof equipment, and cat ladder is mostly fixed at the fire engine rear portion behind the current fire engine, and the distance of marking time is higher apart from ground at the bottom one, and inconvenient direct back cat ladder of kicking on. If the rear ladder stand is installed too low, the use and the passing of the fire fighting truck are affected. Some cat ladders behind fire engine adopt to turn over and fix at the fire engine rear portion, lock through fixed buckle, all produce easily after this kind of back cat ladder is opened and is closed and rock, and the installation is fixed firm inadequately, and safety in utilization is also not good enough. In addition, a plurality of functional areas are arranged at the rear carriage of the fire engine, and the arrangement of the rear ladder can influence the normal use of the functional areas.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the rear ladder stand of the fire fighting truck, which can be stored when not used, does not influence the normal use and running of the fire fighting truck, is firmly fixed when used and is easy to climb.

In order to achieve the purpose, the invention adopts the following technical scheme:

a rear ladder stand of a fire fighting truck comprises a fixed ladder, a rotary ladder, a guide rail assembly and a telescopic rod; the guide rail assembly is fixed at the back of the fire fighting truck box body, one end of the telescopic rod is fixed on the fixed ladder, the other end of the telescopic rod is connected with the guide rail assembly in a sliding manner, and the rotary ladder is hinged to the bottom of the fixed ladder; rotatory ladder upset upwards is accomodate in fixed ladder, and fixed ladder slides to realize the whole accomodating of back cat ladder in the guide rail assembly together with the telescopic link, and fixed ladder slides to the fire engine box outside together with the telescopic link, and the upset downwards of rotatory ladder realizes the back cat ladder and prop up.

The guide rail assembly comprises a shell, a pressing wheel and a knob type fixing pin, wherein the pressing wheel is arranged on the shell; the telescopic link is installed between two pinch rollers from top to bottom, and the telescopic link slides along the pinch roller, and is fixed through knob type fixed pin after sliding.

The ladder is characterized by further comprising a sealing plate, pedals, upper handrails and side handrails, wherein the sealing plate is fixed on the side face of the fixed ladder, the side handrails are fixed on the sealing plate, the pedals are fixed at the top of the fixed ladder, and the upper handrails are fixed on the pedals.

The section of the telescopic rod is rhombic.

The ladder is characterized by further comprising a first limiting block and a second limiting block which are mutually matched, wherein the first limiting block is provided with an opening with inclination, the first limiting block is fixed on the fixed ladder, the second limiting block is provided with an bulge matched with the opening, the second limiting block is fixed on the rotary ladder, and the opening is clamped on the bulge after the rotary ladder is downwards opened so that the rotary ladder is downwards opened and then is in an inclined state.

Compared with the prior art, the invention has the beneficial effects that:

1. rotatory ladder upset upwards is located fixed ladder, and fixed ladder slides to realizing in the guide rail assembly with the telescopic link and the back cat ladder is accomodate, and the back cat ladder is accomodate completely to the guide rail assembly in, can not influence the normal use in back carriage functional area.

2. The fixed ladder and the telescopic rod slide to the outside of the rear vehicle body of the fire fighting truck, the rotary ladder turns downwards to support the rear ladder, and the support is stable and does not shake. And the rear crawling ladder is positioned outside the rear vehicle body of the fire truck, so that the normal use of the functional area of the rear carriage cannot be influenced even when the rear crawling ladder works.

3. The invention is also provided with the pedal, the upper handrail and the side handrail, so that the climbing is easy, and a fireman can conveniently, quickly and safely climb the roof.

4. The first limiting block and the second limiting block enable the rotary ladder to be inclined after being opened, and climbing is facilitated.

5. The telescopic link is installed between two pinch rollers from top to bottom, and the telescopic link side is the rhombus, and the telescopic link slides along the pinch roller, has guaranteed that the smooth and easy of back slide pull-out and withdrawal.

Drawings

FIG. 1 is a perspective view of the present invention in a fully extended state;

FIG. 2 is a front view schematically illustrating a storage state structure of the present invention;

FIG. 3 is a schematic perspective view of the fixed ladder of the present invention in a pulled-out state;

FIG. 4 is a front view of the present invention in a schematic configuration;

FIG. 5 is a sectional view taken along line A of FIG. 4;

FIG. 6 is a sectional view taken along line B of FIG. 4;

FIG. 7 is a cross-sectional view taken along line C of FIG. 4;

fig. 8 is an enlarged view of a portion I of fig. 5.

In the figure: 1-fixed ladder 2-rotary ladder 3-guide rail assembly 4-telescopic rod 5-seal plate 6-pedal 7-upper handrail 8-side handrail 9-first limit block 10-second limit block 31-shell 32-press wheel 33-knob type fixed pin 91-notch

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings: