Fire fighting truck and protective device and system for preventing false operation of ladder assembly
A technology of protection device and fire engine, which is applied in fire rescue and other directions, can solve problems such as safety accidents, damage to vehicles or other objects, and achieve the effect of avoiding the malfunction of the ladder frame
Active Publication Date: 2014-08-20
CHANGSHA ZOOMLION FIRE FIGHTING VEHICLE +1
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
When this happens, the ascent or descent of the ladder frame is likely to damage vehicles or other objects, especially when there are people on the ladder frame or working bucket, safety accidents are likely to occur
Method used
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[0019] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0020] image 3 It is the protection system for preventing the malfunction of the ladder frame of the fire truck according to the present invention. Such as image 3 As shown, the protection system may include a hydraulic valve 3 for controlling the flow and direction of pressure oil to control the action of the ladder frame of the fire truck; and a protection device 100 corresponding to the hydraulic valve 3 . Wherein, according to the actual situation, the protection system may include at least one hydraulic valve 3, and the hydraulic valve 3 may be a proportional valve, and may include a luffing proportional valve, a telescopic proportional valve and / or a r...
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The invention discloses a fire fighting truck and a protective device and system for preventing false operation of a ladder assembly. The fire fighting truck comprises a hydraulic valve, a main valve and a truck getting on-off conversion valve, wherein the hydraulic valve controls the motion of the ladder assembly by controlling the flow rate and the flow direction of pressure oil; the truck getting on-off conversion valve controls the main valve to convert the pressure oil conveying direction. The protective device comprises a first actuating mechanism and a second actuating mechanism, wherein the first actuating mechanism is connected with the hydraulic valve controlling the motion of the ladder assembly; the second actuating mechanism is connected with the first actuating mechanism, when the hydraulic valve malfunctions, the first actuating mechanism controls the second actuating mechanism to act so as to enable the truck getting on-off conversion valve not to be operated; the hydraulic oil supply by the hydraulic valve is cut off, and the false operation of the ladder assembly is prevented, thereby eliminating the safety hazard.
Description
technical field [0001] The invention relates to the field of fire trucks, in particular to a fire truck and a protective device and system for preventing malfunction of its ladder frame. Background technique [0002] In a fire truck, the luffing of the ladder frame (that is, the raising or lowering of the ladder frame) is through the hydraulic system to generate pressure oil to make the luffing cylinder extend or retract, and the change of the extension or retraction direction of the luffing cylinder depends on Hydraulic valves are used to change the direction, and the direction change of these hydraulic valves is realized through the electrical system. [0003] figure 1 It is the hydraulic schematic diagram of the ladder frame luffing of the fire truck. Among them, the main oil pump 8 absorbs hydraulic oil from the hydraulic oil tank 9 to generate pressure oil, and the pressure oil passes through the reversing valve 6 to generate hydraulic power for the main valve 5, so t...
Claims
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Login to View More IPC IPC(8): A62C27/00A62C37/00
Inventor 覃艺波邹发良
Owner CHANGSHA ZOOMLION FIRE FIGHTING VEHICLE