Parking braking removal system, engineering machinery vehicle and parking braking removal method
A construction machinery vehicle and parking technology, which is applied in the direction of brake actuators, mechanical equipment, gear transmission mechanisms, etc., can solve problems such as the inability to release the parking brake, so as to avoid the inability to release the parking brake and avoid safety hidden effect
Pending Publication Date: 2021-09-17
SANY HEAVY EQUIP
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Problems solved by technology
[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a parking brake release system, construction machinery vehicle and parking brake release method, which realizes parking brake release and parking active recovery through a manual pumping device , which solves the problem that the parking brake release system needs to be set on the main control oil circuit in the prior art, and the problem that the parking brake cannot be released when the main controller oil circuit fails
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[0059] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail b...
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The invention relates to a parking braking removal system, an engineering machinery vehicle and a parking removal method, and the parking braking removal system comprises a parking brake, a main control oil way and a manual pumping device, wherein the parking brake comprises a parking braking oil cavity and a braking oil cavity, a piston rod is arranged in the parking braking oil cavity, the parking braking oil cavity is divided into a rod cavity and a rodless cavity by the piston rod, and a pressure spring is arranged in the rodless cavity. The outlet end of the main control oil way is connected with two hydraulic pipes, one hydraulic pipe is connected with the brake oil cavity, the other hydraulic pipe is connected with an oil inlet V1 of a shuttle valve, and an oil outlet of the shuttle valve is connected with the rod cavity of the parking brake oil cavity. The manual pumping device is detachably connected to one end of a transition valve block, the other end of the transition valve block is connected with an oil inlet V2 of the shuttle valve so that the manual pumping device can be communicated with the rod cavity, and the manual pumping device is suitable for pumping and / or unloading hydraulic oil to the rod cavity so that parking braking can be removed or recovered.
Description
technical field [0001] The invention relates to the technical field of engineering machinery vehicles, in particular to a parking brake release system, an engineering machinery vehicle and a method. Background technique [0002] Mining vehicles are an important means of transportation in open-pit mining. Due to the harsh operating environment, the possibility of failure is also very high. When the mining wide-body vehicle breaks down during operation, especially when the vehicle cannot be started, in order not to affect the continuation of the work, the faulty vehicle needs to be consigned to the designated place for repair. However, once the vehicle cannot be started, it means that the parking brake function of the vehicle will be turned on, and the rear wheels of the vehicle will be locked by the brakes. After the brake is locked, because the mining vehicle is a large-tonnage mechanical product, it will be extremely difficult to tow, and if it is forcibly towed, it will c...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16D65/14F16D121/04F16D127/06F16D127/02
CPCF16D65/14F16D2121/04F16D2127/06F16D2127/02
Inventor 常彦李鹏飞邓辉
Owner SANY HEAVY EQUIP