Detecting Device for Impact Energy of Demountable Breaker Picks

Abstract

The present application provides a dismountable impact energy detection device for a breaker pick, which comprises: a base, an energy absorption cylinder, and a detection rod; the energy absorption cylinder is detachably mounted on the top of the base; the energy absorption cylinder includes a cylinder body, an upper anvil, a lower anvil, and steel balls; the upper anvil is accommodated at the upper end of the cylinder body, the lower anvil is accommodated at the lower end of the cylinder body, and the steel balls are filled inside the cylinder body and located between the upper anvil and the lower anvil; the lower end of the detection rod abuts against the upper anvil; the lower end of the detection rod is formed into a semi-circular head; a uniaxial resistive strain gauge is fixedly attached to the outer surface of the detection rod for measuring the stress wave generated when the breaker pick works; the upper end of the detection rod is mounted on the breaker pick to be detected and serves as the drill rod of the breaker pick.

Description

Technical Field

[0001] This application relates to an impact energy detection device, and particularly to a detachable impact energy detection device for a breaker pick. Background Art

[0002] Currently, the devices used to detect the impact energy of breaker picks are generally large and mainly used in dedicated laboratories. They are generally large fixed devices that cannot be disassembled and transported, nor are they suitable for mobile detection. Summary of the Invention

[0003] In view of the above problems, this application aims to provide a detachable impact energy detection device for a breaker pick, which is easy to disassemble, can be broken down into parts, and is suitable for mobile detection.

[0004] The detachable impact energy detection device of this application includes: a base, an energy absorption cylinder, and a detection rod;

[0005] The energy absorption cylinder is detachably mounted on the top of the base;

[0006] The energy absorption cylinder includes a cylinder body, an upper anvil, a lower anvil, and steel balls; the upper anvil is received at the upper end of the cylinder body, the lower anvil is received at the lower end of the cylinder body, and the steel balls are filled inside the cylinder body and located between the upper anvil and the lower anvil;

[0007] The lower end of the detection rod abuts against the upper anvil; the lower end of the detection rod is formed as a semi-circular head; a uniaxial resistive strain gauge is fixedly attached to the outer surface of the detection rod for measuring the stress wave generated when the breaker pick works;

[0008] The upper end of the detection rod is mounted on the breaker pick to be detected and serves as the drill rod of the breaker pick.

[0009] Preferably, a circular groove is formed at the top of the base, and the lower end of the cylinder body is inserted into the groove.

[0010] Preferably, the base includes multiple layers of bottom plates, and each layer is detachably mounted together by a plurality of first bolts.

[0011] Preferably, grooves are formed on the lower side of each layer of the bottom plate.

[0012] Preferably, a first cover plate is provided at the upper end of the cylinder body, and a first circular hole is formed in the middle of the first cover plate; a second bolt is installed on the first cover plate, and the cylinder body is fixed to the base by connecting the lower end of the second bolt to the top of the base.

[0013] Preferably, a second cover plate is provided on the first cover plate, and a second round hole is formed in the middle of the second cover plate; the second cover plate can be detachably fixed to the first cover plate through a third bolt to seal the first round hole of the first cover plate; the second round hole is located at the central position of the first round hole; the diameter of the second round hole is smaller than that of the first round hole; the diameter of the second round hole is larger than the diameter of the detection rod; the lower end of the detection rod passes through the second round hole and abuts against the upper anvil in the cylinder body.

[0014] Preferably, the diameter of the steel ball is 3-5 mm.

[0015] Preferably, the base is narrower at the top and wider at the bottom.

[0016] Preferably, the energy absorption cylinder is located at the central position of the base and is perpendicular to the base.

[0017] The detachable impact energy detection device for a breaker of the present application is small in structure, easy to disassemble and transport, and can be placed on a mobile detection vehicle. The base is designed with a multi-layer plate structure, and the disassembly and assembly work can be completed by a single person. A large number of steel balls in the energy absorption cylinder can absorb the impact energy and prevent damage to surrounding facilities. The detection rod connected to the breaker can be replaced at any time, which is convenient for detecting breakers of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure diagram of the detachable impact energy detection device for a breaker of the present application;

[0019] Figure 2 is an exploded view of the detachable impact energy detection device for a breaker of the present application;

[0020] Figure 3 is a schematic cross-sectional structure diagram of the energy absorption cylinder of the detachable impact energy detection device for a breaker of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the detachable impact energy detection device for a breaker of the present application will be described in detail with reference to the accompanying drawings.

[0022] The detachable impact energy detection device for a breaker of the present application includes: a base, an energy absorption cylinder, and a detection rod 31.

[0023] The energy absorption cylinder is detachably installed on the top of the base. The energy absorption cylinder is located at the central position of the base and is perpendicular to the base.

[0024] The energy absorption cylinder includes a cylinder body 21, an upper anvil 26, a lower anvil 25, and steel balls 27; the upper anvil 26 is received at the upper end of the cylinder body 21, the lower anvil 25 is received at the lower end of the cylinder body 21, and the steel balls 27 are filled inside the cylinder body 21 and are located between the upper anvil 26 and the lower anvil 25.

[0025] The lower end of the detection rod 31 abuts against the upper anvil 26; the lower end of the detection rod 31 is formed into a semi-circular head; a uniaxial resistive strain gauge 32 is fixedly attached to the outer surface of the detection rod 31, and the strain gauge 32 is preferably located at the middle position of the detection rod for measuring the stress wave generated during the operation of the breaker pick.

[0026] The upper end of the detection rod 31 is installed on the breaker pick to be detected and serves as the drill rod of the breaker pick.

[0027] A circular groove 14 is formed at the top of the base, and the lower end of the cylinder body 21 is inserted into the groove 14.

[0028] The base includes multiple layers of base plates 11, and each layer is detachably installed together through a plurality of first bolts 12.

[0029] A groove 13 is formed on the lower side of each layer of the base plate 11, and the groove 13 can be cross-shaped. The base can be in a shape with equal width up and down as in Figure 1 、 2 or in a shape with a narrower upper part and a wider lower part.

[0030] A first cover plate 22 is provided at the upper end of the cylinder body 21, and a first round hole is formed in the middle of the first cover plate 22; a second bolt 24 is installed on the first cover plate 22, and the cylinder body 21 is fixed to the base by connecting the lower end of the second bolt 24 to the top of the base.

[0031] A second cover plate 23 is provided on the first cover plate 22, and a second round hole is formed in the middle of the second cover plate 23; the second cover plate 23 is detachably fixed to the first cover plate 22 through a third bolt to cover the first round hole of the first cover plate 22; the second round hole is located at the center of the first round hole; the diameter of the second round hole is smaller than the diameter of the first round hole; the diameter of the second round hole is larger than the diameter of the detection rod 31; the lower end of the detection rod 31 passes through the second round hole and abuts against the upper anvil 26 inside the cylinder body 21.

[0032] The diameter of the steel ball is 3 - 5 mm, preferably 4 mm.

[0033] During detection, the detection rod is installed on the breaker pick to be detected; the lower end of the detection rod abuts against the upper anvil. When the breaker pick operates, the detection rod impacts the upper anvil, and the upper anvil conducts the impact energy to the steel balls in the cylinder body. Through the movement of the steel balls in the cylinder body, the impact energy is absorbed, and part of the impact energy is converted into heat energy through the friction between the steel balls, minimizing the damage of the impact energy to the measuring device as much as possible. The steel balls reduce the reflected stress wave and prevent the reflected wave from interfering with the incident wave, making the detection result more accurate.

[0034] When transfer is needed, the base, energy absorption cylinder, detection rod, etc. can be disassembled, which is convenient for transportation and placing on a mobile detection vehicle.

[0035] Unless otherwise defined, all technical and / or scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this invention pertains. The materials, methods, and examples mentioned in this application are illustrative only and not restrictive.

[0036] Although the present invention has been described in connection with specific embodiments, those skilled in the art can make appropriate substitutions, modifications, and variations under the gist of the invention of this application, and such substitutions, modifications, and variations still fall within the protection scope of this application.

Claims

1. A detachable impact energy detection device for a breaker pick, characterized in that Comprising: A base, an energy absorption cylinder, and a detection rod; The energy absorption cylinder is detachably mounted on the top of the base; The energy absorption cylinder includes a cylinder body, an upper anvil, a lower anvil, and steel balls; the upper anvil is received at the upper end of the cylinder body, the lower anvil is received at the lower end of the cylinder body, and the steel balls are filled inside the cylinder body and are located between the upper anvil and the lower anvil; The lower end of the detection rod abuts against the upper anvil; the lower end of the detection rod is formed as a semi-circular head; a uniaxial resistive strain gauge is fixedly attached to the outer surface of the detection rod for measuring the stress wave generated during the operation of the breaker pick; The upper end of the detection rod is mounted on the breaker pick to be detected and serves as the drill rod of the breaker pick; A circular groove is formed at the top of the base, and the lower end of the cylinder body is inserted into the groove; The base includes multiple layers of bottom plates, and each layer is detachably mounted together by a plurality of first bolts; The upper end of the cylinder body is provided with a first cover plate, and a first circular hole is formed in the middle of the first cover plate; a second bolt is mounted on the first cover plate, and the cylinder body is fixed to the base by joining the lower end of the second bolt to the top of the base; a second cover plate is provided on the first cover plate, and a second circular hole is formed in the middle of the second cover plate; the second cover plate is detachably fixed to the first cover plate by a third bolt to seal the first circular hole of the first cover plate; the second circular hole is located at the center of the first circular hole; the diameter of the second circular hole is smaller than the diameter of the first circular hole; the diameter of the second circular hole is larger than the diameter of the detection rod; the lower end of the detection rod passes through the second circular hole and abuts against the upper anvil inside the cylinder body; When the breaker pick operates, the detection rod impacts the upper anvil, and the upper anvil conducts the impact energy to the steel balls in the cylinder body. Through the movement of the steel balls in the cylinder body, the impact energy is absorbed, and part of the impact energy is converted into heat energy through the friction between the steel balls, reducing the damage of the impact energy to the measuring device; the steel balls reduce the reflected stress wave and prevent the reflected wave from interfering with the incident wave, making the detection result more accurate.

2. The detachable breaker pick impact energy detection device according to claim 1, wherein: A groove is formed on the lower side of each layer of the bottom plate.

3. The detachable breaker pick impact energy detection device according to claim 1, wherein: The diameter of the steel balls is 3-5 mm.

4. The detachable breaker pick impact energy detection device according to claim 1, wherein: The base is narrower at the top and wider at the bottom.

5. The detachable breaker pick impact energy detection device according to claim 1, wherein: The energy absorption cylinder is located at the center of the base and is perpendicular to the base.

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