Inclined wedge type clamp

Abstract

The invention discloses an inclined wedge type clamp of a drilling machine. Because a clamping oil cylinder adopts a vertical installation or proximately vertical angle installation mode, the vertical installation mode greatly reduces the width of the whole clamp, reduces the width of the drilling machine, reduces the size of the whole drilling machine, and the movement of the drilling machine isvery convenient. The inclined wedge type clamp solves the problem of conversion from vertical pressure to horizontal pressure, and has the advantages of high precision, convenient installation and maintenance, low manufacture cost, stable and convenient work, practicability, difficult looseness and clamping of a drilling rod during work and work safety assurance. At the same time, when an included angle alpha between the inclined plane of the inclined wedge and the vertical direction adopts a proper value range, because of the force decomposition principle, and the power conveyed by the clamping oil cylinder is enlarged, i.e. the same clamping oil cylinder can provide greater clamping force after adopting the inclined wedge type clamp.

Description

technical field [0001] The invention relates to a drilling rig in the field of engineering machinery, in particular to a clamping system for a non-excavation pipe laying horizontal directional drilling rig. Background technique [0002] At present, there are mainly two types of grippers for trenchless horizontal directional drilling rigs: "clip gripper" and "three-point gripper". On a drilling rig with the same power, the clamping cylinders of the pair clamp and the three-point clamp are generally directly connected to the clamp block through the pin shaft, so the width of the clamp is relatively large, making the entire clamp Width increases, so just caused the overall machine width of drilling rig to increase, and the external dimension of drilling rig exceeds limit, affects transportation, and it is also inconvenient to move on the construction site. Moreover, if the drilling rig is larger, a larger type of clamping oil cylinder is often needed, and the bore of these oil...

AI Technical Summary

Problems solved by technology

On a drilling rig with the same power, the clamping cylinders of the pair clamp and the three-point clamp are generally directly connected to the clamp block through the pin shaft, so the width of the clamp is relatively large, making the entire clamp The width increases, which leads to an increase in the overall width of the drilling rig, and the overall size of the drilling rig exceeds the limit, which affects transportation and is inconvenient to move on the construction site

Moreover, if the drilling rig is larger, a larger type of clamping oil cylinder is often required, and the bore of these oil cylinders is also large, and the volume is also large, which increases the cost.

In addition, under the same function, the three-point clamp needs to add an additional clamping cylinder, which greatly increases the cost

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