CN202728097U - Telescopic double-step ladder in back row of fire truck cab - Google Patents
Telescopic double-step ladder in back row of fire truck cab Download PDFInfo
- Publication number
- CN202728097U CN202728097U CN 201220442647 CN201220442647U CN202728097U CN 202728097 U CN202728097 U CN 202728097U CN 201220442647 CN201220442647 CN 201220442647 CN 201220442647 U CN201220442647 U CN 201220442647U CN 202728097 U CN202728097 U CN 202728097U
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- hinged
- fire truck
- pedal
- footstep
- crank arm
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Abstract
The utility model discloses a telescopic double-step ladder in the back row of a fire truck cab. The telescopic double-stage ladder comprises a first footstep, a first air cylinder and a second footstep. The middle portion of the first footstep is hinged with the lower end of a support, the upper end of the support is hinged on the fire truck, the tail end of the first footstep is hinged with the lower end of a crank arm, and the upper end of the crank arm is hinged on the fire truck. A piston rod of the first air cylinder is hinged on the middle portion of the crank arm, two ends of the crank arm are respectively hinged on the fire truck and the tail end of a connection rod, and the front end of the connection rod is hinged on the middle portion of the crank arm. The front end of the second footstep is fixedly connected with a horizontal piston rod of a second air cylinder, rolling bearings are arranged at the bottom of the second footstep, and a guide rail for the rolling bearings to move is arranged on the fire truck. The telescopic double-stage ladder solves the problem that a one-step ladder in the back row of an original medium fire truck and an original large scale fire truck is too high from the ground so that firemen carrying air breathing apparatuses and devices on the back are hard to get on and get off the fire truck, and the firemen carrying the air breathing apparatuses on heavy devices on the back can safely, conveniently and quickly get on and get off the fire trunk.
Description
Technical field:
The utility model is arranged telescopic twin-stage ladder after relating to a kind of driving cab of fire fighting truck.
Background technology:
The terrain clearance that row's one-level is marked time behind the existing big-and-middle-sized driving cab of fire fighting truck is generally at 550mm-650mm, such terrain clearance is too high, so that fire fighters is born the difficulty, inconvenient, not dangerous fast of getting on or off the bus comparatively behind air respiratorresuscitator and the equipment, both threaten the inherently safe of fire fighters, affected again the fire fighting speed of fire fighters.
Summary of the invention:
For overcoming the defective of prior art, the purpose of this utility model is arranged telescopic twin-stage ladder after being to provide a kind of driving cab of fire fighting truck, it is too high to have solved the terrain clearance that row's one-level is marked time behind original big-and-middle-sized driving cab of fire fighting truck, fire fighters is born the hard problem of getting on or off the bus behind air respiratorresuscitator and the equipment, makes fire fighters in that to bear air respiratorresuscitator and weight equipment safer, convenient and rapidly when getting on or off the bus.
The utility model technical solution problem adopts following technical scheme:
The telescopic twin-stage ladder of row behind the driving cab of fire fighting truck, it comprises:
The one-level pedal, the middle part of described one-level pedal and the lower end of support are hinged, and the upper end of described support is articulated on the car body; The end of described one-level pedal is hinged with the lower end of cranking arm, and described upper end of cranking arm is articulated on the car body;
The first cylinder, the piston rod of described the first cylinder and the middle part of bent pivoted arm are hinged, and the two ends of described bent pivoted arm are hinged on respectively the end that reaches connecting rod on the car body, and the front end of described connecting rod is articulated in described middle part of cranking arm;
The secondary pedal, the solid rod joint of the front end of described secondary pedal and horizontally disposed the second cylinder is provided with antifriction-bearing box in the bottom of described secondary pedal, and car body is provided with the guide rail for described antifriction-bearing box walking.
Constructional feature of the present utility model also is:
Be connected with extension spring between the middle part of described middle part of cranking arm and described bent pivoted arm.
Door limit at the operator's compartment back door is provided with touch switch, when open at the operator's compartment back door, switch connection circuit and electromagnetic valve of gas circuit, the first cylinder and the second cylinder charge stretch out piston rod, and drive the curved arm rod mechanism action and put down one-level and mark time and stretch out secondary and mark time, otherwise, close tail gate, car door disconnects touch switch, connects electromagnetic valve, and cylinder piston rod drives the curved arm rod mechanism retraction and regains one-level, secondary pedal.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
This mechanism's safe ready; as long as open the operator's compartment back door; the two-stage pedal just can stretch out automatically in mechanism; after closing tail gate; this mechanism just is recovered to two-stage stepping in the pedal assembly automatically, and one-level pedal both sides are provided with the protection extension spring, and the one-level pedal can not fall to stretching out outside the car yet even cylinder is died; injure traffic safety, this assembly is no more than the driving safety that the car load width can not affect fire extinguishing tanker in collapsed state.
This mechanism is the assembly parts, can independently use, making and easy for installation.And can be used with each fire extinguishing tanker vehicle, be installed in easily the below at operator's compartment back door.
Fire extinguishing tanker is arranged the retractable steps pedal gear after the operator's compartment twin-stage is installed after, the terrain clearance that has solved row's one-level pedal behind original big-and-middle-sized driving cab of fire fighting truck is too high, fire fighters is born the hard problem of getting on or off the bus behind air respiratorresuscitator and the equipment, the terrain clearance of first order pedal is reduced to present 300mm by original terrain clearance 550mm ~ 650mm, and the spacing of two or three grades of pedals all guarantees at 300mm, met the national legislation item, made fire fighters in that to bear air respiratorresuscitator and weight equipment safer when getting on or off the bus, convenient and rapidly.
Description of drawings:
Fig. 1 is the structural representation that the utility model pedal stretches out; Fig. 2 is the structural representation that pedal is packed up.
Number in the figure: 1 one-level pedal, 2 support, and 3 crank arm, 4 first cylinders, 5 bent pivoted arms, 6 connecting rods, 7 secondary pedals, 8 second cylinders, 9 antifriction-bearing boxs, 10 extension springs.
Below pass through the specific embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
The specific embodiment:
Embodiment: in conjunction with Fig. 1,2, the telescopic twin-stage ladder of row behind the driving cab of fire fighting truck of present embodiment, it comprises:
One-level pedal 1, its middle part is hinged with the lower end of supporting 2, and the upper end of support 2 is articulated on the car body; The end of one-level pedal 1 is hinged with 3 the lower end of cranking arm, and 3 the upper end of cranking arm is articulated on the car body.
The first cylinder 4, the middle part of its piston rod and bent pivoted arm 5 is hinged, and the two ends of bent pivoted arm 5 are respectively at the end of hinged car body and connecting rod 6, and the front end of connecting rod 6 is articulated in 3 the middle part of cranking arm.
Adopt cylinder as power, back and forth movement by the first cylinder piston rod drives bent pivoted arm 5 around the rotating shaft action, pulling connecting rod 6 is up, drive cranks arm 3 around the rotating shaft rotation, crank arm to rotate and drive one-level pedal 1 with rotating shaft rotation rising take treadle supporting 2 as the radius level, thereby realize stretching out and reclaiming of one-level pedal, in one-level pedal cylinder charge, the second cylinder 8 inflations of secondary pedal promote secondary pedal 7 and stretch out, the secondary pedal supports reciprocating in orbit by antifriction-bearing box 9, thereby realize stretching out and recovery of secondary pedal, when opened at the operator's compartment back door, the touch switch that is positioned at a limit ejected during work, connect circuit and electromagnetic valve of gas circuit, the inflation of two control cylinders is stretched out, and drives the curved arm rod mechanism action and put down the one-level pedal and stretch out the secondary pedal, otherwise, close tail gate, car door disconnects touch switch, connects electromagnetic valve, and cylinder drives the curved arm rod mechanism retraction and regains one-level, the secondary pedal.
Claims (2)
1. arrange telescopic twin-stage ladder behind the driving cab of fire fighting truck, it is characterized in that comprising:
One-level pedal (1), the lower end of the middle part of described one-level pedal and support (2) is hinged, and the upper end of described support is articulated on the car body; The end of described one-level pedal is hinged with the lower end of crank arm (3), and described upper end of cranking arm is articulated on the car body;
The first cylinder (4), the middle part of the piston rod of described the first cylinder (4) and bent pivoted arm (5) is hinged, and the two ends of described bent pivoted arm are hinged on respectively the end that reaches connecting rod (6) on the car body, and the front end of described connecting rod is articulated in the middle part of described cranking arm (3);
Secondary pedal (7), the solid rod joint of the front end of described secondary pedal (7) and horizontally disposed the second cylinder (8) is provided with antifriction-bearing box (9) in the bottom of described secondary pedal (7), and car body is provided with the guide rail for described antifriction-bearing box (9) walking.
2. the telescopic twin-stage ladder of row behind the driving cab of fire fighting truck according to claim 1 is characterized in that, is connected with extension spring (10) between the middle part of the middle part of described cranking arm (3) and described bent pivoted arm (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442647 CN202728097U (en) | 2012-08-31 | 2012-08-31 | Telescopic double-step ladder in back row of fire truck cab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442647 CN202728097U (en) | 2012-08-31 | 2012-08-31 | Telescopic double-step ladder in back row of fire truck cab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202728097U true CN202728097U (en) | 2013-02-13 |
Family
ID=47653827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220442647 Expired - Fee Related CN202728097U (en) | 2012-08-31 | 2012-08-31 | Telescopic double-step ladder in back row of fire truck cab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202728097U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709181A (en) * | 2013-12-14 | 2015-06-17 | 明光市浩淼消防科技发展有限公司 | Telescopic ladder step mechanism for fire-fighting vehicle |
| CN105459910A (en) * | 2015-12-04 | 2016-04-06 | 北汽福田汽车股份有限公司 | Vehicle and overturning control method and system for vehicle pedal |
| CN105711505A (en) * | 2016-03-17 | 2016-06-29 | 安徽安凯汽车股份有限公司 | Automatic device for bus movable tread |
| CN107554659A (en) * | 2017-08-15 | 2018-01-09 | 东莞市联洲知识产权运营管理有限公司 | A kind of folding step for electric bicycle |
-
2012
- 2012-08-31 CN CN 201220442647 patent/CN202728097U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709181A (en) * | 2013-12-14 | 2015-06-17 | 明光市浩淼消防科技发展有限公司 | Telescopic ladder step mechanism for fire-fighting vehicle |
| CN105459910A (en) * | 2015-12-04 | 2016-04-06 | 北汽福田汽车股份有限公司 | Vehicle and overturning control method and system for vehicle pedal |
| CN105711505A (en) * | 2016-03-17 | 2016-06-29 | 安徽安凯汽车股份有限公司 | Automatic device for bus movable tread |
| CN107554659A (en) * | 2017-08-15 | 2018-01-09 | 东莞市联洲知识产权运营管理有限公司 | A kind of folding step for electric bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20130831 |