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 particularly relates to a chain-driven automatic drill feeding device. Background Art

[0002] Currently, commonly used automatic drill feed systems are used in electric drill rigs. These typically utilize a gear reduction box and require modifications to the drawworks structure, making them relatively complex. Automatic drill feed systems have yet to be implemented in mechanical drill rigs. Furthermore, automatic drill feed systems used in electric drill rigs are not suitable for mechanical drill 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. The power input shaft and brake shaft are arranged in parallel within the chain transmission box. The input shaft is provided with sprockets composed of two sets of double-row chains, one of which is connected to the winch main drum shaft sprocket via a chain, and the other set of double-row sprockets is connected to the output shaft sprocket via a chain. A pneumatic clutch and friction hub are also 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 utilizes the aforementioned technical solution. When the engine fails, the AC variable-frequency motor is activated, which in turn activates the air-controlled valve to inflate the pneumatic clutch. Power from the motor is then transmitted to the input shaft via the clutch, which then drives the main drum of the winch via a chain, achieving both emergency lifting and automatic drill feed. An auxiliary brake is also provided on the brake shaft, enabling braking when compressed air is introduced. This automatic drill feed device offers a simpler structure, reliable performance, and convenient installation, making it suitable for mechanically driven 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 Figure 1A chain-driven automatic drill feed device comprises a housing 3 housing a power input shaft 4 and a brake shaft 6, both arranged parallel to each other. A double-row chain 2 drives the power input shaft 4 to the drawworks main drum shaft 1. An AC variable-frequency motor 9 and a cycloidal reducer 8 transmit power to a connecting hub 10 mounted at the end of the power input shaft 4 via a pneumatic clutch 7 and a friction hub 11. This drives the entire power input shaft 4 to rotate, thereby driving the drawworks main drum shaft 1. A double-row chain 5 drives the brake shaft 6 to the power input shaft 4, with an auxiliary brake 12 mounted at its end.

Claims

1. A chain-driven automatic drill feed device, comprising an explosion-proof motor, a cycloidal pinwheel reducer, a clutch, an auxiliary brake, a winch, and a chain transmission box; the explosion-proof motor and cycloidal pinwheel reducer are connected to the chain transmission box, and the auxiliary brake is mounted on the chain transmission box; The automatic drill feeding device is powered by an explosion-proof motor and equipped with a cycloid reducer to increase 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. The explosion-proof motor adopts AC variable frequency 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, an auxiliary brake is equipped on the brake shaft of the chain transmission box to realize the braking function.

2. A chain-driven automatic drill feeding device according to claim 1, characterized in that: The chain transmission box is designed with a connecting hub 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 pneumatic clutch is inflated, the clutch and the friction hub drive the connecting hub to rotate, transmitting power to the input shaft.

3. The chain-driven automatic drill feeding device according to claim 1, characterized in that: The chain transmission box includes a box body, and a power input shaft and a brake shaft are designed in parallel inside the box body. 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 winch main drum shaft sprocket, and the other set of double-row chains is connected to the brake shaft sprocket.

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