Test and detection device for slender rod

Abstract

The invention discloses a test and detection device (100) for a slender rod with multiple sections of rods. The slender rod (9) comprises a centre rod (91), a plurality of outer section rods (92) sleeved on the centre rod (91) and the outmost section rod (93). The test and detection device (100) is characterized by comprising a centre rod supporting and pushing-pulling device (5), and an outer section rod pull-out structure, wherein the centre rod supporting and pushing-pulling device (5) is used for supporting and pulling the centre rod (91), and the outer section rod pull-out structure is used for pulling out the outer section rods (92) to be detected by means of pulling the centre rod (91). The test and detection device has a simple structure, reduces the field occupancy area during detecting the slender rod, can be applied to detection of slender rods with different diameters, and improves the universality of the test and detection device.

Description

technical field [0001] The invention relates to a test and detection device for slender rods. Background technique [0002] The test detection device is used for the test detection of the running-in of the telescopic slender rods in construction machinery, and is used for the test detection of the movement and rotation of all the slender rods, especially for the drill rods of the pile machinery rotary drilling rig series , including friction rod, machine lock rod, and combination rod for running-in test detection. The inspection for these slender rods usually includes the following test content: 1. The test detects the flexibility of expansion and rotation within the total length of each section of the drill pipe. 2. Test to detect the uniformity of the gap between each section of the drill pipe within the total length. 3. Test to check whether the straightness and radial cylindricity of each section of the drill pipe within the total length range comply with the regulatio...

AI Technical Summary

Problems solved by technology

[0005] The drill pipe detection device in the prior art usually has the following problems: 1) in the prior art, when each section rod is pulled out, each section rod is usually pulled out sequentially, resulting in the total length of the drill pipe during detection Longer, higher space requirements for the test site

When long rods with external keys such as drill pipes are changed from one diameter to another, the disassembly and assembly of this closed conventional support structure is time-consuming and laborious, and a set of supports must be remade, which increases the manufacturing cost, making the conventional The drill pipe inspection device cannot realize quick replacement of drill pipe and cannot achieve universality

3) When long rods with external keys, such as drill pipes, are changed from one length to a longer length, the rod is not allowed to have deflection and sag deformation. In order to avoid the above-mentioned deflection and sag deformation, the support points are required not at both ends but Other parts, even the support point must follow the rod, or the position of the support point can be adjusted, but the fixed closed support method of the prior art drill pipe inspection device cannot solve such a problem

In the prior art, the drill pipe is supported by a closed conventional support structure, so that the drill pipe detection device in the prior art cannot be adapted to drill pipes of different diameters or specifications.

5) The different types of the front end square head of the drill pipe in the prior art also affect the versatility of the drill pipe detection device, and the difference of the front end square end of the drill pipe also affects the form of the push-pull drill pipe, so that the way of push-pull drill pipe will be due to Different front end square heads are different, and there is an urgent need for a drill pipe inspection device suitable for various front end square heads

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