Manual brake device of winch

Abstract

The invention discloses a manual brake device of a winch. A brake arm is hinged to one end of a brake bracket, a brake block is arranged on the brake arm, the other end of the brake bracket is sleeved with a couple axle, the two ends of the couple axle are sleeved with a brake handle and a brake connecting rod respectively, and a U-shaped connector is hinged to the brake connecting rod and is connected with the brake arm through a brake linkage mechanism. The manual brake device of the winch is characterized in that a pin roll is fixedly installed at the outer end of the brake connecting rod, the pin roll is sleeved with a supporting rod, and a plurality of balancing weights are arranged on the supporting rod. According to the manual brake device of the winch, an existing manual brake device is slightly improved, a balancing weight device is additionally arranged simply, the structure is simple, and the cost is low, so that the operation force needed by an operating device is greatly reduced, and the device operation saves labor.

Description

technical field [0001] The invention relates to an operating mechanism of mining winches, in particular to a winch manual braking device. Background technique [0002] Mining winches, such as dispatching winches, transport winches, etc., are equipped with equipment control mechanisms. The winch realizes the work and stop of the winch and forward and reverse rotation through the control mechanism. The control mechanism is generally set as a working brake device and a clutch brake device. The structure is exactly the same, but the installation position is different. The working brake device is generally installed at the position where the winch drum is braked, and the clutch brake device is installed at the position where the clutch brake wheel is braked; The state of brake release is to realize the work and stop of the winch, and cooperate with the operation of the forward and reverse control button of the winch to realize the forward and reverse rotation of the winch. [0...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the two kinds of brake devices are mostly manual, and the manual brake device mainly realizes various working states of the winch by manually operating the brake handle, and the braking force applied to the brake handle passes through the lever of the brake device. The interlocking mechanism realizes the braking force required for the brake block to be applied to the reel or brake wheel; with the trend of gradually increasing the size of the mining winch, the traction force of the winch is getting larger and larger, and the braking torque needs to reach the traction torque of the winch More than 3 times, in order to meet the safety standards of the national mining winch; therefore, the design of the manual brake mechanism of the existing mining winch is also corresponding to the large-scale equipment model, and its manual brake device is in accordance with the requirements of the lever principle. The effective lever distance must also be lengthened accordingly; but the arm length of the equipment operator must be limited, so the only way to increase the braking force that the operator needs to apply to the brake handle is to make up for the insufficient braking torque.

[0004] And as the operator's manual force is also limited, and needs both hands frequently to operate in the operation process, so the equipment operator of existing large-scale mining winch suffers untold misery, all is to reflect the unreasonable design of manual braking device, operation too tiring question

[0005] In view of the above existing problems, some research and development units also advocate the use of a structure like the safety brake device of the winch to replace the manual brake device of the winch, but because the working principle of the electrohydraulic brake is to achieve rapid braking when the power is turned off, it is not suitable for the equipment control mechanism. Due to the nature of the work, it is necessary to additionally equip the mining winch with a hydraulic pump station or gas station to realize hydraulic or pneumatic brake operation, which not only greatly increases the manufacturing cost of the equipment, but also increases the scope of application of the winch. Discounted, because of the specific industrial and mining conditions in mines, the promotion and application of equipment is limited

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