CN107059896A - Massif side slope protection damping unit - Google Patents

Abstract

The invention discloses a kind of massif side slope protection damping unit, including protection network and for protection network to be fixed on to the damping anchor rod component of side slope, the damping anchor rod component, which is used to applying upward damping force to protection network when protection network is moved downward, avoids protection network from coming off；By setting damping anchor rod component, when Falling Rocks act on protection network downwards, because damping anchor rod component is to applying upward damping force to protection network, effectively cut down the kinetic energy of falling rocks, it is to avoid tamper protection net and protection network come off, and reciprocally use, it is simple in construction, it is easy to use；After piston rod moves outwardly to ultimate range, can manual rotation reseting sleeve, reseting sleeve is entered axially into anchor pole inner chamber and form circumferentially fixed, then rotary handle bar, piston rod is rotated and is inwardly moved in the case where reseting sleeve is circumferentially fixed, realize that fast driving damping piston is moved and resetted axially inward.

Description

Mountain slope protection and damping device

technical field

The invention relates to the field of slope management, in particular to a protective damping device for mountain slopes.

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, there is a need for a mountain slope protection and damping device, which can 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 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 a protective damping device for mountain slopes, which can 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 to use. Convenience.

The mountain side slope protection damping device of the present invention includes a protective net and a damping anchor assembly for fixing the protective net to the slope, and the damping anchor assembly is used to exert an upward force on the protective net when the protective net is moved downward. The damping force prevents the protective net from falling off.

Further, the damping anchor rod assembly includes 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 reset sleeve for assisting the reset of the piston rod; There is a damping chamber with damping fluid, the inner end of the piston rod seals 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 screw hole that rotates around the axial direction; the piston rod The outer circle of the outer section is provided with external threads, and the inner circle of the reset sleeve is provided with internal threads and is threaded on the outer section of the piston rod. The outer circle of the reset sleeve can axially enter the inner cavity of the anchor rod and connect with the anchor rod. The inner cavity is formed and fixed along the circumferential direction, and the outer end of the piston rod is fixedly provided with a handle rod along the radial direction, and the rotation direction of the external thread of the outer circle of the piston rod is the same as that of the screw hole; the reset The outer end of the sleeve forms a flanging radially outward, the inner end surface of the flanging is fixedly provided with a tab, and the outer circle of the outer end of the anchor rod is fixedly provided with a tab cooperating with the tab.

Further, the said snapping protrusion is an annular snapping protrusion arranged around the outer circumference of the anchor rod, said snap tongues are three and uniformly fixed on the inner end face of the flange in the circumferential direction; the end face of said annular snapping protrusion is semicircular .

Further, the inner end of the piston rod is axially extended and sealed to pass through the damping chamber to form an extension section, and the side wall of the inner section of the anchor rod is provided with 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 moves outward 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 fall-off 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 effect of the present invention is: a kind of mountain side slope protection damping device disclosed by the present invention, by setting the damping anchor assembly, when the rockfall of the slope acts downward on the protective net, due to the upward force exerted on the protective net by the damping anchor assembly The damping force can effectively reduce the kinetic energy of falling rocks, avoiding damage to the protective net and falling 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, the reset sleeve can be manually rotated to make the reset sleeve Enter the inner cavity of the anchor rod in the axial direction to form a circumferential fixation, and then rotate the handle rod to make the piston rod rotate and move inward under the condition that the reset sleeve is fixed in the circumferential direction, so as to quickly drive the damping piston to move inward in the axial direction 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 drive reset force and increase the damping force. The lower piston rod does not move like the lower one, ensuring effective damping when there is falling rock; 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 mountain slope protection damping device in the present embodiment; comprises protective net 1 and is used for the damping bolt assembly that protective net 1 is fixed on the slope, and described damping The anchor rod assembly is used to apply an upward damping force to the protective net 1 when the protective net 1 is moved downward to prevent the protective net 1 from falling off; The damping bolt assembly exerts an upward damping force on the protective net 1, effectively reducing the kinetic energy of falling rocks, avoiding damage to the protective net 1 and falling off of the protective net 1, and can be used reciprocally, with a simple structure and convenient use.

In this embodiment, the damping anchor rod assembly includes a hollow anchor rod 2, a piston rod 3 whose tail end is fixed to the protective net 1 and slides axially inside the anchor rod 2, and a reset device for assisting the reset of the piston rod 3. Cover 4; reset means that the inner end of the piston rod 3 is positioned at the position when the inner end of the anchor rod 2, and the inner end of the piston rod 3 represents an end by the front end of the anchor rod 2 (ie, the inner end of the anchor rod 2), otherwise it is the outer end; A damping chamber 5 with damping liquid is arranged in the middle of the anchor rod 2, 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 winding Axially rotating screw hole 7; by setting the screw hole 7, it is beneficial to improve the effective damping stroke of the damping piston 6, thereby improving the damping force. The outer circle of the piston rod 3 is provided with an external thread 8, and the reset sleeve 4 The inner circle is provided with an internal thread and is threaded on the outer section of the piston rod 3. The outer circle of the reset sleeve 4 can axially enter the inner cavity 8 of the anchor rod 2 and be fixed with the inner cavity 8 of the anchor rod along the circumferential direction. The outer circular cross-section of the reset sleeve 4 can be rectangular or waist-shaped, and the outer port of the inner cavity of the anchor rod 2 is a shape that conforms to the outer circle of the reset sleeve 4 to ensure that the reset sleeve 4 and the anchor rod 2 are aligned in the axial direction. Sliding and fixed fit in the circumferential direction; the outer end of the piston rod 3 is fixedly provided with a handle rod 9 along the radial direction, and the rotation direction of the external thread 8 on the outer circle of the outer section of the piston rod 3 is the same as that of the screw hole 7 ; The outer end of the reset sleeve 4 forms a flanging 10 radially outward, the inner end surface of the flanging 10 is fixedly provided with a tab 11, and the outer circle of the outer end of the anchor rod 2 is fixedly provided with Tongue 11 cooperates with the protrusion 12; the protrusion is an annular protrusion arranged around the outer circumferential direction of the anchor rod, and the tongues are three and uniformly fixed on the inner end surface of the flange in the circumferential direction; the annular protrusion is The end surface of the piston rod 3 is semi-circular; the outer end of the damping anchor rod 2 assembly is inclined downward, when the protective net 1 drags the piston rod 3 downward, the damping piston 6 at the inner end of the piston rod 3 passes through the screw hole 7 and the damping liquid produces damping movement to effectively reduce the kinetic energy of rockfall. When the piston rod 3 moves outward to the maximum distance, the reset sleeve 4 can be manually rotated so that the reset sleeve 4 enters the inner cavity of the anchor rod 2 along the axial direction to form a circumferential fixation, and then rotate the handle rod 9. Make the piston rod 3 rotate and move inward when the reset sleeve 4 is fixed in the circumferential direction, so as to quickly drive the damping piston 6 to move inward in the axial direction and reset, while the external thread 8 of the outer circle of the outer section of the piston rod 3 rotates The direction is the same as the rotation direction of the screw hole 7, which can effectively reduce the driving reset force and increase the damping force. Through the setting of the tongue 11 and the protrusion, it is beneficial to ensure that the piston rod 3 will not move downward when there is no falling rock. It ensures effective damping when there is rockfall; the structure is simple and the operation is convenient.

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 2 is provided with a strip-shaped installation groove 14, and the strip-shaped A rocker arm 15 is installed to rotate in the installation groove 14. The inner end of the extension section 13 is fixed to move outward in the axial direction and drives the inner end of the rocker arm 15 to rotate radially inward while the outer end of the rocker arm 15 moves radially inward. The drive block 16 that rotates outward to form a barb anti-off structure; the position of the rocker arm 15 in the axial direction is located when the damping piston 6 is located at the outer end of the damping chamber 5, and the drive block 16 acts on the rocker arm 15. When the kinetic energy of falling rocks is too large At this time, the rocker arm 15 can be driven by the driving block 16 to form a barb anti-off structure to realize the self-tightening of the anchor rod 2 and prevent the protective net 1 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 14a that cooperates with the driving block 16. When the rotating rod is parallel to the anchor rod 2, the right-angled triangular protrusion 14a is partly located in the inner chamber of the anchor rod 2; the hypotenuse side of the right-angled triangular protrusion 14a is axially opposite to the drive block 16, of course, the The side of the driving block 16 facing the right triangle protrusion 14a can be an arc surface, which is beneficial for 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 (5)

1. A kind of mountain side slope protection damping device, it is characterized in that: comprise protective net and be used for the damping anchor rod assembly that protective net is fixed on slope, described damping anchor rod assembly is used for when protective net is subjected to downward movement Apply an upward damping force to the protective net to prevent the protective net from falling off. 2. The mountain slope protection damping device according to claim 1, characterized in that: the damping anchor rod assembly includes a hollow anchor rod, the tail end of which is fixed to the protective net and slides axially inside a piston sleeved on the anchor rod Rod and a reset sleeve for assisting the reset of the piston rod; a damping chamber with 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 chamber and the inner end is fixedly provided with a damping piston, so The damping piston is provided with a screw hole that rotates around the axial direction; the outer circle of the piston rod is provided with external threads, and the inner circle of the reset sleeve is provided with internal threads and the threads are sleeved on the outer section of the piston rod. The outer circle of the sleeve can axially enter the inner cavity of the anchor rod and be fixed with the inner cavity of the anchor rod along the circumferential direction. The outer end of the piston rod is fixed with a handle rod along the radial direction. The rotation direction of the circular external thread is the same as the rotation direction of the screw hole; the outer end of the reset sleeve forms a flanging radially outward, and the inner end surface of the flanging is fixedly provided with a tongue, and the outer end of the anchor rod The outer circle is fixedly provided with a locking protrusion that cooperates with the locking tongue. 3. The protection and damping device for mountain slopes according to claim 1, characterized in that: the locking protrusion is an annular locking protrusion arranged around the outer circumference of the anchor rod, and the three tongues are uniformly fixed in the circumferential direction on the inner end surface of the flanging; the end surface of the annular locking protrusion is semicircular. 4. The damping device for mountain slope protection according to claim 2, characterized in that: the inner end of the piston rod is axially extended and sealed to pass through the damping chamber to form an extension section, and the side wall of the inner section of the anchor rod is set There is a strip-shaped installation groove, and a rocker arm is installed in rotation in the strip-shaped installation groove. The inner end of the extension section is fixed to move outward in the axial direction and drives the inner end of the rocker arm to rotate inward in the radial direction while the outer end of the rocker arm The end rotates radially outward to form a driving block with a barb anti-off structure. 5. The mountain slope protection and damping device according to claim 4, characterized in that: the rocker arm is a rotating rod hinged in the middle to the side wall of the bar-shaped installation groove, and the outer circle of the inner end of the rotating rod protrudes radially A right-angled triangular protrusion matched with the driving block is formed, and when the rotating rod is parallel to the anchor rod, the part of the right-angled triangular protrusion is located in the inner cavity of the anchor rod.