CN107130616B - Adjustable damping anchoring assembly for slope protective net - Google Patents

Abstract

The invention discloses an adjustable slope protection net damping anchor assembly, which comprises a hollow anchor rod, a piston rod whose tail end is fixed to the protective net and slides axially inside the anchor rod, and a piston rod for assisting the reset of the piston rod. Limiting sleeve; a damping chamber with damping liquid is provided in the middle of the anchor rod, the inner end of the piston rod is sealed and penetrates into the damping chamber and the inner end is fixedly provided with a damping piston, and the damping piston is provided with a Rotating screw hole; when the piston rod moves outward to the maximum distance, the reset sleeve can be manually rotated so that the reset sleeve enters the inner cavity of the anchor rod along the axial direction to form a circumferential fixation, and then the handle rod is rotated to rotate the piston rod and The reset sleeve moves inward when the circumferential direction is fixed, so as to quickly drive the damping piston to move inward in the axial direction and reset, and the external thread of the outer circle of the piston rod rotates in the same direction as the screw hole, which can effectively reduce the The damping force is increased due to the small drive reset force, the structure is simple, and the operation is convenient.

Description

Adjustable slope protection net damping anchor assembly

technical field

The invention relates to the field of slope treatment, in particular to an adjustable damping and anchoring component of a slope protection net.

Background technique

With the rise and advancement of many large-scale construction projects, man-made slopes are becoming more and more common all over the country, such as the Three Gorges Dam, etc., and the treatment of rockfall on slopes has become increasingly prominent and urgent. There are currently two main methods for slope rockfall control. One is the active slope protection system, which covers and wraps various types of flexible nets, mainly steel wire rope nets, on the surface of the slope to be protected to limit the rock mass on the slope. Weathering, spalling and collapse, or controlling the movement of falling rocks within a small range. When this method is implemented, the flexible net needs to cover the entire slope, and the amount of consumables is large. At the same time, falling rocks are easy to accumulate and inconvenient to clean. Over time, it will bring a large load to the entire protection system. When the load is greater than the system’s bearing limit, the entire support net will fall off. The other is the slope passive protection system, which consists of high-strength metal grids, ring metal meshes, anchor ropes, steel columns, steel column bases, etc. At the bottom of the net. Although this method reduces the amount of consumables, the falling rocks of the rolling slope can easily break through the high-strength metal grid mesh and ring metal mesh.

Therefore, in order to solve the above problems, an adjustable slope protection net damping anchor assembly is needed, which can provide damping force to the slope protection net, effectively reduce the kinetic energy of falling rocks, avoid damage to the protection net and fall off of the protection net, and can be used reciprocally , simple in structure and easy to use.

Contents of the invention

In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide an adjustable slope protection net damping anchor assembly, which can provide damping force to the slope protection net, effectively reduce the kinetic energy of rockfall, and avoid damage to the protection net and The protective net falls off and can be used reciprocally, the structure is simple, and the use is convenient.

The adjustable slope protection net damping anchor assembly of the present invention includes a hollow anchor rod, a piston rod whose tail end is fixed to the protection net and slides axially inside the anchor rod, and a limit sleeve for assisting the reset of the piston rod A damping cavity with a damping liquid is arranged in the middle of the anchor rod, the inner end of the piston rod is sealed and penetrates into the damping cavity and the inner end is fixedly provided with a damping piston, and the damping piston is provided with a helical shaft rotating around the axial direction. Holes; the outer circle of the piston rod is provided with external threads, the inner circle of the limiting sleeve is provided with internal threads and the threads are sleeved on the outer section of the piston rod, and the outer circle of the limiting sleeve can axially enter the anchor The inner cavity in the rod is formed and fixed with the inner cavity of the anchor rod in the circumferential direction, and the outer end of the piston rod is radially penetrated through the through hole for connecting the fixed protective net, and the outer part of the outer circle of the piston rod is The rotation direction of the thread is the same as the rotation direction of the screw hole; the outer end of the limiting sleeve forms a flanging radially outward, and the inner end surface of the flanging is fixedly provided with a variable sleeve that can be sleeved on the outer circle of the outer end of the anchor rod. A diameter sleeve, the outer circular thread of the diameter reduction sleeve is provided with a lock nut for driving the diameter reduction sleeve.

Further, the diameter reducing sleeve is provided with strip-shaped slots along the axial direction, and the outer circle of the diameter reducing sleeve and the inner circle of the locking nut are conical surfaces that cooperate with each other and are respectively provided with external threads and internal threads.

Further, the inner end of the piston rod extends axially and seals out of the damping chamber to form an extension section, the side wall of the inner section of the anchor rod is also a strip-shaped installation groove, and a rocker arm is rotatably installed in the strip-shaped installation groove, The inner end of the extension section is fixed to form a drive block that reciprocates in the axial direction and drives the inner end of the rocker arm to rotate radially inward and the outer end of the rocker arm to rotate radially outward to form a barb detachment prevention structure.

Further, the rocker arm is a rotating rod hinged in the middle to the side wall of the bar-shaped installation groove. The outer circle of the inner end of the rotating rod protrudes radially to form a right-angled triangle protrusion matched with the driving block. When the rotating rod is parallel to the anchor rod , the right-angled triangular raised part is located in the inner cavity of the anchor rod.

The beneficial effects of the present invention are: an adjustable damping anchor component of the slope protection net disclosed in the present invention, through the damping cooperation between the piston rod and the anchor rod, when the rockfall of the slope acts downward on the protection net, due to the damping anchor component Apply an upward damping force to the protective net to effectively reduce the kinetic energy of falling rocks, avoid damage to the protective net and fall off of the protective net, and can be used reciprocally, with a simple structure and easy use; when the piston rod moves outward to the maximum distance, it can be manually rotated and reset The reset sleeve enters the inner cavity of the anchor rod along the axial direction to form a circumferential fixation, and then rotates the handle rod to rotate the piston rod and move inward under the condition that the reset sleeve is fixed in the circumferential direction, so as to quickly drive the damping piston along the axial direction. Move inward and reset, and the rotation direction of the external thread of the outer circle of the piston rod is the same as the rotation direction of the screw hole, which can effectively reduce the driving reset force and increase the damping force. The structure is simple and the operation is convenient.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

Fig. 1 is a schematic structural view of the present invention, as shown in the figure, the adjustable slope protection net damping anchor assembly in this embodiment; includes a hollow anchor rod 1, the tail end is fixed with the protection net 2 and slides in the axial direction The piston rod 3 set on the anchor rod 1 and the limit sleeve 4 for assisting the reset of the piston rod 3; the reset indicates the position when the inner end of the piston rod 3 is located at the inner end of the anchor rod 1, and the inner end of the piston rod 3 indicates the position by the warp One end of the front end of the anchor rod 1 (that is, the inner end of the anchor rod 1), and vice versa the outer end; the middle of the anchor rod 1 is provided with a damping chamber 5 with a damping fluid, and the inner end of the piston rod 3 is sealed and penetrates into the damping chamber 5 and the inner end is fixedly provided with a damping piston 6, and the damping piston 6 is provided with a screw hole 7 that rotates around the axial direction; by setting the screw hole 7, it is beneficial to improve the effective damping stroke of the damping piston 6, thereby increasing the damping force, so The outer circle of the outer section of the piston rod 3 is provided with external threads, the inner circle of the limit sleeve 4 is provided with internal threads and the threads are sleeved on the outer section of the piston rod 3, and the outer circle of the limit sleeve 4 can axially enter The inner cavity 8 in the anchor rod 1 is formed and fixed with the inner cavity of the anchor rod 1 along the circumferential direction. The outer circular cross section of the limit sleeve 4 can be rectangular or waist-shaped, and the outer port of the inner cavity of the anchor rod 1 is conformable Cooperate with the shape of the outer circle of the limit sleeve 4 to ensure that the limit sleeve 4 and the anchor rod 1 slide axially and fix in the circumferential direction; The through hole 9 of the net 2 may also include a drive rod that can penetrate into the through hole 9. The radius of one end of the drive rod is smaller than the radius of the through hole, and the radius of the other end is greater than the radius of the through hole, which is beneficial to ensure that the drive rod can be inserted into the through hole and expand. Tightly fixed to avoid falling off, the rotation direction of the external thread of the outer circle of the piston rod 3 is the same as the rotation direction of the screw hole 7; the outer end of the limiting sleeve 4 forms a flange 10 radially outward, so The inner end surface of the flange 10 is fixedly provided with a reducing sleeve 11 that can be sleeved on the outer circle of the outer end of the anchor rod 1, and the outer circular thread of the reducing sleeve 11 is provided with a lock nut that drives the reducing sleeve 11 to reduce the diameter. 12. The inner end of the reducing sleeve 11 is suspended, and the structure of the reducing sleeve 11 is all the reducing structures in the prior art that can realize the purpose of the present invention, and will not be repeated here; the outer end of the anchor rod 1 When the protective net 2 drags the piston rod 3 downwards, the damping piston 6 at the inner end of the piston rod 3 passes through the screw hole 7 and damps the damping fluid, which effectively reduces the kinetic energy of falling rocks. When the piston rod 3 moves outward to After the maximum distance, the limit sleeve 4 can be manually rotated, so that the limit sleeve 4 enters the inner cavity of the anchor rod 1 along the axial direction to form a circumferential fixation, and then the handle rod is rotated to make the piston rod 3 rotate and move in the circumferential direction of the limit sleeve 4. When it is fixed, it moves inward to realize fast driving of the damping piston 6 to move axially inward and reset, and the rotation direction of the external thread of the outer circle of the piston rod 3 is the same as the rotation direction of the screw hole 7, which can effectively reduce the Drive the reset force to increase the damping force; fix the limit sleeve 4 on the outer circle of the anchor rod 1 through the lockable reducing sleeve 11 structure, the fixing force can be adjusted according to the actual situation, and ensure that the fixing force of the piston rod 3 is moderate. Moreover, the structure is simple and the operation is convenient.

In this embodiment, the diameter reducing sleeve 11 is provided with strip slits along the axial direction, and the outer circle of the diameter reducing sleeve 11 and the inner circle of the locking nut 12 are conical surfaces that cooperate with each other and are respectively provided with outer thread and internal thread; the diameter reducing sleeve 11 and the lock nut 12 adopt a tapered surface fit, which is conducive to the continuously adjustable radius of the diameter reducing sleeve 11 and is fixed and stable. The thread driving structure belongs to the existing structure, and will not be repeated here.

In this embodiment, the inner end of the piston rod 3 extends axially and seals out of the damping chamber 5 to form an extension section 13. The side wall of the inner section of the anchor rod 1 is also a strip-shaped installation groove 14, and the strip-shaped installation A rocker arm is rotatably installed in the slot 14, and the inner end of the extension section 13 is fixed to reciprocate in the axial direction and drives the inner end of the rocker arm 15 to rotate radially inward and the outer end of the rocker arm 15 to rotate radially outward to form The drive block 16 of the barb anti-off structure; the axial position of the rocker arm 15 is located when the damping piston 6 is located at the outer end of the damping chamber 5. The drive block 16 acts on the rocker arm 15. When the kinetic energy of falling rocks is too large, it can The rocker arm 15 is driven by the driving block 16 to form a barb anti-off structure to realize the self-tightening of the anchor rod 1 and prevent the protective net 2 from falling off.

In this embodiment, the rocker arm 15 is a rotating rod hinged in the middle on the side wall of the bar-shaped installation groove 14, and the outer circle of the inner end of the rotating rod protrudes radially to form a right-angled triangular protrusion 17 that cooperates with the driving block 16. When the rotating rod is parallel to the anchor rod 1, the right-angled triangular protrusion 17 is partly located in the inner cavity of the anchor rod 1; the hypotenuse side of the right-angled triangular protrusion 17 is axially opposite to the drive block 16, of course, the The side of the driving block 16 facing the right-angled triangular projection 17 can be an arc surface, which is beneficial to the driving block 16 to drive the rotating rod to rotate smoothly and avoid locking.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (1)

1. An adjustable slope protection net damping anchor assembly is characterized in that: it includes a hollow anchor rod, the tail end is fixed with the protective net and slides axially inside the piston rod that is sleeved on the anchor rod and is used to assist the piston rod reset limit sleeve; the middle of the anchor rod is provided with a damping chamber with damping fluid, the inner end of the piston rod is sealed and penetrates into the damping chamber and the inner end is fixedly provided with a damping piston, and the damping piston is provided with a winding An axially rotating screw hole; the outer circle of the piston rod is provided with external threads, the inner circle of the limiting sleeve is provided with internal threads and the threads are sleeved on the outer section of the piston rod, the outer circle of the limiting sleeve It can axially enter the inner cavity of the anchor rod and form a fixation with the inner cavity of the anchor rod along the circumferential direction. The rotation direction of the external thread of the segment outer circle is the same as the rotation direction of the screw hole; the outer end of the limiting sleeve forms a flanging radially outward, and the inner end surface of the flanging is fixedly provided with a screw that can be sleeved outside the anchor rod The diameter reducing sleeve of the outer circle of the end, the external thread of the reducing sleeve is provided with a lock nut that drives the reducing sleeve to reduce the diameter; the reducing sleeve is provided with a strip seam along the axial direction, and the reducing sleeve The outer circle of the lock nut and the inner circle of the lock nut are conical surfaces that cooperate with each other and are respectively provided with external threads and internal threads; the inner end of the piston rod extends axially and seals out of the damping chamber to form an extension section, and the anchor The side wall of the inner section of the rod is also a bar-shaped installation groove, and a rocker arm is rotatably installed in the bar-shaped installation groove, and the inner end of the extension section is fixed to reciprocate in the axial direction and drives the inner end of the rocker arm to move in the radial direction. Rotate inside and the outer end of the rocker arm rotates radially outward to form a drive block with a barb anti-off structure; A right-angled triangle protrusion is formed on the protrusion to cooperate with the driving block, and when the rotating rod is parallel to the anchor rod, the right-angled triangle protrusion part is located in the inner cavity of the anchor rod.

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