A wall tapping detection hammer device for underground mining

Abstract

The invention discloses a wall tapping detection hammer device for underground mining, and particularly discloses a detection hammer device which allows force of a hammerhead to be conveyed to rock ata tapped position well through a bendable hammer handle and which can ascertain whether the inside of surrounding rock has loosened parts, broken parts and separated layers or not. Impact of vibration generated by tapping on hands is effectively buffered so that the hammer device is more convenient to use, and the hammer device can effectively improve effects of detecting and checking roof potential safety hazards. The hammer device is characterized in that the bottom of a hammerhead is provided with a fixing sleeve, a fixing ear is disposed in the fixing sleeve, a hollow structure is adoptedby the hammerhead, a ceramic coating is formed through physical deposition on the external surface of the hammerhead, two end surface of the hammerhead are raised outward to form spherical surfaces,one end of the hammer handle is blocked in the fixing sleeve, the inner wall of the fixing sleeve is provided with spline slots, the external wall of one end of the hammer handle is provided with a spline, the spline is corresponding to the spline slots in the fixing sleeve, a holding sleeve sleeves the other end of the hammer handle and has a hollow air-inflated structure, the hammer handle is made of a hollow arc-shaped tube, and a thread bushing sleeves the other end of the hammer handle.

Description

technical field [0001] The invention relates to a knocking detection hammer device for underground excavation operations, which relates to a knocking hammer device used for underground mining operations to perform knocking detection around roadways, and belongs to the field of mine equipment. In particular, it relates to a detection hammer device which can better transmit the strength of the hammer head to the rock mass at the striking place through the bendable hammer handle, and better detect whether the surrounding rock mass is loose, broken or separated. Background technique [0002] In accordance with the coal mine safety regulations, the staff should check the roof and the surrounding rocks in time. Each worker must regularly check the roof, coal walls, brackets, etc. at the workplace. If any abnormalities are found, they should be dealt with in time to ensure safe production. Existing knocking on the roof, mainly before the start of underground mining operations, when...

AI Technical Summary

Problems solved by technology

The hammer handle of this invention is also rigid, which cannot solve the problem that in actual use, the vibration generated by knocking cannot buffer the opponent's impact, the pressure on the hand cannot be relieved, and the strength of the hammer head cannot be better transmitted to the knocking place.

[0007] There is also a hammer design with a protective sleeve or a shock-absorbing device on the hammer handle, but because the hammer head needs to increase the space when striking, the wrist needs to move more, and fatigue damage will occur to the wrist, especially in the lower position. When knocking on the rock mass of the roadway, the hammer handle is parallel to the rock mass of the roadway after the hammer head touches the rock mass of the roadway, and the hand and the rock mass of the roadway fit together. Detection effect

[0008] Publication number CN106142009A discloses a retractable and foldable rubber hammer, including a hammer head, one side of the hammer head is fixedly connected with a front handle, one side of the front handle is provided with a groove, and one side of the front handle is sleeved with a Rear handle, the surface of the rear handle is provided with a non-slip layer, the upper surface of one side of the rear handle is fixedly connected with a fixed rod that runs through and extends to the lower surface of the rear handle, both ends of the fixed rod are fixedly connected with a fixed block, the surface of the fixed block Bolts are movably connected, and torsion springs are movably connected to the outside of the fixed rod. Both ends of the torsion spring are fixedly connected in the groove inside the front handle. The top of the inner side of the sleeve is plugged with a pin. The hammer handle of this invention is also rigid, which cannot solve the problem that in actual use, the vibration generated by knocking cannot buffer the opponent's impact, the pressure on the hand cannot be relieved, and the strength of the hammer head cannot be changed. good delivery to the percussion

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