Chain-driven automatic drill feeding device

Abstract

An automatic bit feeding device driven by a chain is characterized in that an alternating-current variable-frequency explosion-proof motor and a cycloidal-pin wheel speed reducer provide enough torque, power is transmitted to a winch main roller shaft through a chain wheel and a chain, and the emergency lifting and automatic bit feeding functions are achieved. Meanwhile, an auxiliary brake is installed on the brake shaft, and the emergency brake function is achieved. Chain transmission is adopted, the center distance between the two shafts can be flexibly arranged, and the automatic drill feeding device has high installation adaptability, can be applied to a mechanical drive drilling machine and meets the requirement for automatic drill feeding of the mechanical drive drilling machine.

Description

Technical Field

[0001] The invention specifically relates to an automatic drill feeding device driven by a chain. Background Art

[0002] Currently, the commonly used automatic drill feeding devices are all applied to electric drive drilling rigs, which usually adopt a gear reduction box structure and need to change the winch structure, which is relatively complicated. In mechanical drive drilling rigs, there is no automatic drill feeding device. The automatic drill feeding device in electric drive drilling rigs is not suitable for mechanical drive drilling rigs due to structural limitations. Summary of the invention

[0003] In order to solve the above problems, a chain-driven automatic drill feeding device is designed, which has a simpler structure and is suitable for mechanically driven drilling rigs.

[0004] The technical solution adopted by the present invention is: a chain-driven automatic drill feeding device, the structure of which includes: an explosion-proof motor, a cycloidal pinwheel reducer, a clutch, an auxiliary brake, and a chain transmission box. A power input shaft and a brake shaft are arranged in parallel in the chain transmission box. The input shaft is provided with a sprocket composed of two groups of double-row chains, one group of double-row sprockets is connected to the main drum shaft sprocket of the winch through a chain, and the other group of double-row sprockets is connected to the output shaft sprocket through a chain. At the same time, a pneumatic clutch and a friction hub are provided at the end of the power input shaft, and an auxiliary brake is provided at the end of the brake shaft.

[0005] The present invention adopts the above technical solution. When the engine cannot work, the AC variable frequency motor can be started, and the air control valve can be started to inflate the pneumatic clutch. The power transmitted by the motor is transmitted to the input shaft through the clutch, and then the main drum of the winch is driven to work through the chain to realize the emergency lifting and automatic drill feeding functions. At the same time, an auxiliary brake is set on the brake shaft to realize the braking function when compressed air is introduced. This automatic drill feeding device has a simpler structure, reliable performance and convenient installation adaptability, and can be applied to mechanical drive drilling rigs. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of the present invention. DETAILED DESCRIPTION

[0007] See also Figure 1A chain-driven automatic drill feeding device, the structure of which includes: a box body 3, a power input shaft 4 and a brake shaft 6 are arranged in the box body 3, and the two shafts are arranged parallel to each other; a double-row chain 2 is used to drive the power input shaft 4 and the main drum shaft 1 of the winch, and the AC variable frequency motor 9 and the cycloidal pinwheel reducer 8 transmit power to the connecting hub 10 installed at the end of the power input shaft 4 through the pneumatic clutch 7 and the friction hub 11, and drive the entire power input shaft 4 to rotate, thereby driving the main drum shaft 1 of the winch. A double-row chain 5 is used to drive the brake shaft 6 and the power input shaft 4, and an auxiliary brake 12 is installed at the end of the brake shaft 6.

Claims

1. A chain-driven automatic drill feeding device, characterized in that it includes an explosion-proof motor, a cycloidal pinwheel reducer, a clutch, an auxiliary brake, a winch, an air circuit system, an electric circuit system, and a chain transmission box; the explosion-proof motor and the cycloidal pinwheel reducer are connected to the chain transmission box, and the auxiliary brake is installed on the chain transmission box.

2. The chain-driven automatic drill feeding device according to claim 1, characterized in that: The power of the automatic drill feeding device is provided by an explosion-proof motor, and is equipped with a cycloidal pinwheel reducer to increase the torque. The power is transmitted to the main drum shaft of the winch through a chain transmission box, thereby driving the main drum shaft of the winch to rotate.

3. The chain-driven automatic drill feeding device according to claim 1 is characterized in that: The motor adopts AC frequency conversion control technology. The motor and reducer are connected to the power input shaft of the chain transmission box through a radial pneumatic clutch. At the same time, the brake shaft of the chain transmission box is equipped with an AirfleX WCB324 auxiliary brake to realize the braking function.

4. The chain transmission box according to claim 2, characterized in that: A connecting hub is designed at the end of the power input shaft, which is connected to the outer ring of the pneumatic clutch through the connecting hub. When the air circuit system inflates the pneumatic clutch, the clutch and the friction hub drive the connecting hub to rotate, thereby transmitting power to the input shaft.

5. The chain transmission box according to claim 2, characterized in that: It includes a box body, in which a power input shaft and a brake shaft are designed in parallel, and the power input shaft is installed with a sprocket composed of two sets of double-row chains, one set of double-row chains is connected to the sprocket of the main drum shaft of the winch, and the other set of double-row chains is connected to the sprocket of the brake shaft.

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