Modular multi-joint buffer connection type anchor rod
A multi-node, connected technology, applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of obvious differences in physical and mechanical properties between layers, tensile or shear failure, support failure, etc., to achieve Improve the adaptability of different lithologies, prevent premature fracture, and release the effect of rock mass pressure
Inactive Publication Date: 2019-10-11
TAIYUAN UNIV OF TECH
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Problems solved by technology
When laying, the bolt will pass through different rock layers or coal seams. Coal rock layers have layered characteristics and the physical and mechanical properties of the layers are significantly different, because the actual deformation or pressure bearing capacity of different rock layers or coal layers is different. In layers with large rock formation pressure or deformation, tensile or shear failure occurs locally, resulting in support failure. Therefore, it is necessary to develop a modular and combined bolt with a buffering effect that is more suitable for the actual support situation above. Tensile, shear and cushioning deformation capabilities of anchor rods
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[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] see Figure 1-5 As shown, an embodiment provided by the present invention; a modular multi-node buffer connection anchor rod, including a front anchor section 1, a middle anchor section 2, a rear anchor section 3, anti-skid teeth 4, a buffer connection section 5, a screw thread Connector 6, connecting hole 61, upper slider 7, lower slider 8, upper connecting groove 9, lower connecting groove 10, transverse hole 11, positioning pin 12, limit plate 13 and...
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The invention discloses a modular multi-joint buffer connection type anchor rod. The opposite ends of a front anchor section and a middle anchor section are connected in series through a buffer connection section, and the opposite ends of the middle anchor section and a rear anchor section are connected in series through a buffer connection section; the rear end of the front anchor section, the two ends of the middle anchor portion and the two ends of the rear anchor portion are provided with threaded connectors; the upper portions of the buffer connection sections are connected with upper sliders through upper connecting grooves; the lower portions of the buffer connecting sections are connected with lower sliders through lower connecting grooves; connecting holes are transversely machined in the threaded connectors; positioning bolts sequentially pass through the connecting holes and transverse through holes to position and connect the buffer connection portions and the threaded connectors; the outer ends of the positioning bolts are fixedly provided with limit plates; and buffer springs are symmetrically connected between the upper sliders and the lower sliders. The modular multi-joint buffer connection type anchor rod can be fast and reliable in connection, can achieve free combination of lengths and can decompose and bear different rock stratum prestress.
Description
technical field [0001] The invention relates to the technical field of coal mine support bolt equipment, in particular to a modular multi-node buffer connection type bolt. Background technique [0002] At present, bolts are widely used to control the stability of surrounding rock after underground roadway excavation and chamber excavation. Bolt support refers to anchoring bolts into the surrounding rock to form an integral and stable rock belt around the roadway to achieve the stability of the rod body and the surrounding rock. Rocks work together on purpose. There are many types of bolts, but in the field support, various forms of damage such as breaking and shearing of the bolts often occur. When laying, the bolt will pass through different rock layers or coal seams. Coal rock layers have layered characteristics and the physical and mechanical properties of the layers are significantly different, because the actual deformation or pressure bearing capacity of different roc...
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IPC IPC(8): E21D21/00
CPCE21D21/0026E21D21/0046
Inventor 赵通弓培林李超李鹏李建忠王开
Owner TAIYUAN UNIV OF TECH