Hand brakes and rail vehicles

Abstract

Embodiments of the present application provide a hand brake and a rail vehicle, wherein the hand brake includes: a housing, a handle, and a driving shaft, a driven shaft, a first-stage force amplification component, a second Stage force amplification assembly, sprocket and chain; one end of the driving shaft is connected to the handle through the casing, and rotates with the handle; the first stage force amplification assembly is arranged between the parallel driving shaft and the driven shaft, and rotates the driving shaft The moment is transmitted to the driven shaft; two sets of second-stage force amplification components are symmetrically arranged on both sides of the first-stage force amplification component and rotate with the first-stage force amplification component; two sprockets are symmetrically arranged on the first-stage force amplification components The axial two sides of the amplifying assembly are respectively connected with the second-stage force amplifying assembly on the same side and rotate; the chain is meshed with the sprocket, and one end of the chain is connected to the brake cylinder through the casing. The hand brake machine and the rail vehicle provided by the present application can solve the problem that the traditional hand brake machine is prone to jam of the brake cylinder and cannot normally apply the hand brake.

Description

technical field [0001] The present application relates to a rail vehicle braking technology, and in particular, to a hand brake and a rail vehicle. Background technique [0002] Rail vehicles are an important transportation link connecting cities, and have gradually become the main means of transportation in cities. Rail vehicles are also the main carrier for cargo transportation. A rail vehicle usually includes: at least one carriage, a bogie is arranged under the carriage, and the bogie has the function of carrying the carriage and providing running. Brake cylinders are arranged on the bogie to brake the wheels in a braking state. The parking brake is a kind of brake applied by the rail vehicle when it is parked temporarily or for a long time to prevent the vehicle from rolling away during the parking process. [0003] The hand brake is the main component to realize the parking brake. It uses the human power as the motive force to generate the braking force, and after am...

AI Technical Summary

Problems solved by technology

Traditional hand brakes amplify the driving force through structures such as gears, screw or worm gears. The length of the screw or worm limits the magnification of the force. The driving force applied by the operator must be particularly large to achieve the parking braking effect. Bring more inconvenience to the operation process

Moreover, when operating the hand brake, you can only artificially feel whether the application of the braking force is in place, and often due to different human strengths, the parking force is not applied enough or too much, resulting in braking failure.

In addition, the tension output end of the traditional hand brake is converted into two chains connected to the two brake cylinders through a chain in a split-half manner. After the transformation, the two chains move synchronously. When one of the brake cylinders When stuck, the other brake cylinder cannot be braked, and the failure of the parking brake will bring a greater safety hazard

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