Concrete all-purpose core drilling machine

Abstract

The invention discloses a concrete all-purpose core drilling machine. The concrete all-purpose core drilling comprises a stand and a core bit, wherein a first driving mechanism for driving the core bit to rotate is arranged in the middle of the stand; a second driving mechanism for driving the core bit to lift is arranged on the upper part of the stand; a core drilling machine positioning structure is arranged at the bottom of the stand; the stand is also provided with a retainer for mounting the core bit; the first driving mechanism is positioned inside the retainer and fixedly connected with the retainer; the second driving mechanism is positioned above the retainer and fixedly connected with the retainer; the retainer is capable of sliding up and down along the stand under driving of the second driving mechanism; and the stand is provided with a linear guide rail for supporting and guiding the retainer to move. Core drilling of underwater and overwater structures on any position can be realized, the side of the core sample is smooth, the core bit applies force automatically by a hydraulic motor without manned operation, so that the labor intensity and construction cost of workers are lowered, and the quality and working efficiency of the core sample are improved.

Description

technical field [0001] The invention belongs to the field of civil engineering mechanical equipment, in particular to a concrete universal coring machine. Background technique [0002] Concrete is one of the most important building materials in my country's construction projects, and its quality is directly related to the safety of building structures. Strengthening the monitoring and testing of concrete quality, ensuring and improving the quality of concrete, especially the strength of concrete, is an important topic in today's construction projects. However, the composition and quality of the current concrete raw materials have changed greatly compared with the past, and the performance of concrete is affected by many factors such as on-site curing conditions, which makes the surface performance of concrete poor. [0003] Our country has been using the rebound method to estimate the concrete strength of the solid structure for a long time. The so-called rebound method is ...

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Problems solved by technology

The industry standard also stipulates that the unqualified structures detected by the rebound method shall be cored, and the performance of the core sample shall be used to characterize the solid concrete. However, most of the existing coring machines have the following problems: (1). The track of the drill bit is not on the same axis, which makes the force of the drill bit uneven and the surface of the core sample is not smooth, which has a great influence on the strength test results of the solid concrete; (2), using the motor as the power source of the drill bit, drilling When the drill bit needs to be cooled by running water, and in order to prevent leakage, the motor must work under dry and anhydrous conditions, which makes it difficult to implement the coring of the inclined plane position, top surface position and underwater structure of the solid structure, so that the concrete in these positions The performance is unknown; (3), the existing coring machine has complex structure, inconvenient installation and maintenance, high production cost, low equipment efficiency, high labor intensity of workers, and cannot adapt to the coring needs under special conditions

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