CN211202027U - Anchor rod anti-collapse device - Google Patents
Anchor rod anti-collapse device Download PDFInfo
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- CN211202027U CN211202027U CN201922232800.7U CN201922232800U CN211202027U CN 211202027 U CN211202027 U CN 211202027U CN 201922232800 U CN201922232800 U CN 201922232800U CN 211202027 U CN211202027 U CN 211202027U
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- anchor rod
- torque nut
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Abstract
The utility model discloses a device is prevented collapsing by stock, utilize the energy-absorbing part to carry out the energy-absorbing to the ejection energy that is used in first torque nut, realize the one-level and prevent collapsing, then partly be used in second torque nut with remaining energy, realize the second grade and prevent collapsing, if the second grade is prevented collapsing and is become invalid, utilize suspension component and speed reduction part to consume the stock, the energy-absorbing part, the surplus energy of first torque nut and second torque nut, and suspension component and stock and speed reduction part form triangle stable structure, when collapsing the stock, can effectively control the whole of stock and drop, prevent that the stock collapses or weakens the stock and collapses the speed, realize tertiary preventing collapsing, can effectively avoid the stock like this, the people is hindered in the collapse of torque nut, improve operation personnel's security.
Description
Technical Field
The utility model relates to a coal mine safety mining technical field, in particular to rock burst tunnel stock collapse prevention device.
Background
The roadway is an area with the most rock burst, and accounts for more than 80% of the times of rock burst according to incomplete statistics, and the roadway is often seriously damaged, equipment is damaged, and even casualties are caused when the rock burst occurs. People usually pay attention to how to prevent major accidents caused by rock burst, but the accidents of hurting people caused by ejection of the anchor rod cannot be ignored, and when the stress of the anchor rod is suddenly loaded, the stress of the anchor rod and the torque nut suddenly exceeds the strength of the support body. When the anchor rod and the torque nut still have residual load or energy, the anchor rod and the torque nut can be suddenly ejected, and the injury to operators is easily caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device is prevented collapsing by stock to solve when stock, moment of torsion nut still have residual load or energy, stock, moment of torsion nut can launch suddenly, easily cause the problem of injury to the operation personnel.
According to the embodiment of the utility model, a device is prevented collapsing by stock is provided, including energy-absorbing part, suspension pull part and speed reduction part, energy-absorbing part sets up between first torque nut and the second torque nut on the stock, the both ends of energy-absorbing part respectively with first torque nut and second torque nut butt, be equipped with the tray on the stock and above first torque nut;
one end of the suspension component is connected with the anchor rod, and the connection position is located between the first torque nut and the energy absorption component; the other end of the suspension part is connected with a metal net of a top plate, a steel belt or other anchor rods;
one end of the speed reducing component is connected with the anchor rod, the connection position of the speed reducing component is positioned between the second torque nut and the energy absorbing component, and the other end of the speed reducing component is connected with a top plate metal mesh, a steel belt or other anchor rods;
the suspension component and the deceleration component are respectively positioned on two opposite sides of the anchor rod.
Specifically, the included angle between the suspension part and the horizontal direction is 6-12 degrees, and the included angle between the deceleration part and the horizontal direction is 15-20 degrees.
Specifically, the suspension component and the speed reduction component both comprise flexible connectors, one ends of the flexible connectors are provided with snap rings used for being connected with the anchor rods, and the other ends of the flexible connectors are provided with buckles.
Specifically, the length of the suspension part and the deceleration part is 400mm-600 mm.
Specifically, the energy absorption part is an energy absorption spring, and the energy absorption spring is sleeved outside the anchor rod.
Specifically, the outer diameter of the energy-absorbing spring is 26mm, the wire diameter is 3-5mm, the middle diameter is 23mm, the height is 50mm, the pitch is 7.8-13mm, the interval is 4.8-10mm, the maximum deformation is 40mm, the total number of turns is 5, the effective number of turns is 3, the total length of expansion is 246.4mm, the mass is 1.338g, and the coefficient of the energy-absorbing spring is 2.219 kgf/mm.
Specifically, an antifriction washer is arranged between the tray and the anchor rod.
The embodiment of the utility model provides a device is prevented collapsing by stock, utilize the energy-absorbing part to carry out the energy-absorbing to the ejection energy that is used in first torque nut, realize the one-level and prevent collapsing, then partly be used in second torque nut with remaining energy, realize the second grade and prevent collapsing, if the second grade is prevented collapsing inefficacy, utilize suspension component and speed reduction part to consume the stock, the energy-absorbing part, the surplus energy of first torque nut and second torque nut, and suspension component and stock and speed reduction part form triangle stable structure, when collapsing the stock, can effectively control the whole of stock and drop, prevent that the stock collapses or weakens the stock and collapses the speed, realize tertiary preventing collapsing, can effectively avoid the stock like this, the people is hindered in bursting out of torque nut, improve operation personnel's security.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structural diagram of an anchor rod collapse prevention device provided by an embodiment of the present invention;
fig. 2 is a structural view of the suspending member and the decelerating member.
The device comprises an anchor rod 1, a suspension component 2, a steel belt 3, a tray 4, an antifriction washer 5, a first torque nut 6, a second torque nut 7, a speed reducing component 8, an energy absorbing component 9, a flexible connector 10, a snap ring 11 and a buckle 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
According to the embodiment of the utility model, as shown in fig. 1, an anchor rod anti-collapse device is provided, including energy-absorbing part 9, suspension part 2 and speed reduction part 8, energy-absorbing part 9 is arranged between first torque nut 6 and second torque nut 7 on anchor rod 1, the both ends of energy-absorbing part 9 are respectively abutted with first torque nut 6 and second torque nut 7, tray 4 is arranged on anchor rod 1 and above first torque nut 6, suspension part 2 and speed reduction part 8 are made of metal material; one end of the suspension component 2 is connected with the anchor rod 1, and the connection position is positioned between the first torque nut 6 and the energy absorption component 9; the other end of the suspension part 2 is connected with a metal net of a top plate, a steel belt 3 or other anchor rods 1; one end of the speed reducing component 8 is connected with the anchor rod 1, the connection position is located between the second torque nut 7 and the energy absorbing component 9, the other end of the speed reducing component 8 is connected with the top plate metal mesh, the steel strip 3 or other anchor rods 1, and the suspension component 2 and the speed reducing component 8 are respectively located on two opposite sides of the anchor rod 1.
The first torque nut 6 and the second torque nut 7 are in threaded connection with the rod body of the anchor rod 1, the tray 4 is tightly pressed on the surface of the roadway through the first torque nut 6, a certain pre-tightening force is provided for the anchor rod body, the pre-tightening force is diffused into the coal rock body around the anchor rod, the state of surrounding rock stress is further improved, and the sliding of a surrounding rock separation layer and a structural surface and the opening of joint cracks can be effectively inhibited.
In some embodiments, as shown in fig. 1, an included angle α between the suspension member 2 and the horizontal direction is 6 to 12 °, an included angle β between the deceleration member 8 and the horizontal direction is 15 to 20 °, and thus the transmission of the residual energy is performed at different positions of the anchor rod 1, which not only ensures the stress balance of the anchor rod 1 in the horizontal direction, but also avoids the phenomenon that the residual energy is concentrated at one position of the anchor rod 1 to cause the energy concentration and the collapse is easy to occur.
As shown in fig. 2, the suspension component 2 and the deceleration component 8 both include a flexible connecting body 10, one end of the flexible connecting body 10 is provided with a snap ring 11 for connecting with the anchor rod 1, and the other end of the flexible connecting body 10 is provided with a buckle 12. Wherein the length of the suspension part 2 and the deceleration part 8 is 400mm-600 mm.
Wherein, buckle 12 includes hook portion and sets up the shell fragment at hook portion open-ended to the one end of shell fragment is connected with the one end of hook portion, utilizes hook portion to hook roof metal mesh, steel band 3 or other stock 1 like this and connects, and then the shell fragment seals hook portion open-ended, realizes the firm of connecting, and makes things convenient for the operation of operation personnel. Similarly, the flexible connecting body 10 can be connected with the anchor rod 1 by sleeving the snap ring 11 outside the anchor rod 1, so that the operation is convenient.
In the above embodiment, the energy absorbing component 9 is an energy absorbing spring, and the energy absorbing spring is sleeved outside the anchor rod 1. The outer diameter of the energy-absorbing spring is 26mm, the wire diameter is 3-5mm, the middle diameter is 23mm, the height is 50mm, the pitch is 7.8-13mm, the distance is 4.8-10mm, the maximum deformation is 40mm, the total number of turns is 5, the effective number of turns is 3, the total unfolding length is 246.4mm, the mass is 1.338g, and the coefficient of the energy-absorbing spring is 2.219kgf/mm, so that the energy-absorbing spring not only can have a higher stiffness coefficient, but also can reduce the total number of turns of the energy-absorbing spring to the maximum extent, reduce the using amount of spring manufacturing materials, reduce the cost and meet the size requirement of an anchor rod.
In the above embodiment, the antifriction washer 5 is arranged between the tray 4 and the anchor rod 1, and the antifriction washer 5 can effectively prevent the tray 4 and the anchor rod 1 from being worn and torn mutually, so that the service life is prolonged.
The embodiment of the utility model provides a device is prevented collapsing by stock, utilize energy-absorbing part 9 to carry out the energy-absorbing at the ejection energy of first torque nut 6 of being used, realize the one-level and prevent collapsing, then partly be used for second torque nut 7 with remaining energy, realize that the second grade is prevented collapsing, if the second grade is prevented collapsing inefficacy, utilize suspension component 2 and 8 consumption stock 1 of speed reduction part, energy-absorbing part 9, the residual energy of first torque nut 6 and second torque nut 7, and suspension component 2 and stock 1 and speed reduction part 8 form triangle stable structure, when collapsing down stock 1, can effectively control whole of stock 1 and drop, prevent stock 1 from collapsing or weakening the stock and collapsing the speed, realize tertiary preventing collapsing, can effectively avoid stock 1 like this, the people is hindered to collapsing of torque nut, improve operation personnel's security.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (7)
1. The anchor rod collapse prevention device is characterized by comprising an energy absorption part (9), a suspension part (2) and a deceleration part (8), wherein the energy absorption part (9) is arranged between a first torque nut (6) and a second torque nut (7) on an anchor rod (1), two ends of the energy absorption part (9) are respectively abutted against the first torque nut (6) and the second torque nut (7), and a tray (4) is arranged on the anchor rod (1) and above the first torque nut (6);
one end of the suspension component (2) is connected with the anchor rod (1), and the connection position is positioned between the first torque nut (6) and the energy absorption component (9); the other end of the suspension component (2) is connected with a top plate metal mesh, a steel belt (3) or other anchor rods (1);
one end of the speed reducing component (8) is connected with the anchor rod (1), the connection position is located between the second torque nut (7) and the energy absorbing component (9), and the other end of the speed reducing component (8) is connected with a top plate metal mesh, a steel belt (3) or other anchor rods (1);
the suspension component (2) and the speed reduction component (8) are respectively positioned at two opposite sides of the anchor rod (1).
2. The anchor rod collapse prevention device according to claim 1, wherein the included angle of the suspension component (2) and the horizontal direction is 6-12 degrees, and the included angle of the deceleration component (8) and the horizontal direction is 15-20 degrees.
3. The anchor rod collapse prevention device according to claim 1, wherein the suspension component (2) and the speed reduction component (8) each comprise a flexible connecting body (10), one end of the flexible connecting body (10) is provided with a snap ring (11) for connecting with the anchor rod (1), and the other end of the flexible connecting body (10) is provided with a snap (12).
4. A rock bolt breakup prevention device according to claim 3, characterized in that the length of the suspension member (2) and the deceleration member (8) is 400-600 mm.
5. The anchor rod collapse prevention device according to claim 1, wherein the energy absorption part (9) is an energy absorption spring, and the energy absorption spring is sleeved outside the anchor rod (1).
6. The anchor rod collapse prevention device according to claim 5, wherein the energy absorbing spring has an outer diameter of 26mm, a wire diameter of 3-5mm, a middle diameter of 23mm, a height of 50mm, a pitch of 7.8-13mm, a pitch of 4.8-10mm, a maximum deformation amount of 40mm, a total number of turns of 5, an effective number of turns of 3, an overall length of 246.4mm for deployment, a mass of 1.338g, and an energy absorbing spring coefficient of 2.219 kgf/mm.
7. The rock bolt anti-collapse device of claim 1 characterized in that a wear reducing washer (5) is provided between the tray (4) and the rock bolt (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922232800.7U CN211202027U (en) | 2019-12-12 | 2019-12-12 | Anchor rod anti-collapse device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922232800.7U CN211202027U (en) | 2019-12-12 | 2019-12-12 | Anchor rod anti-collapse device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202027U true CN211202027U (en) | 2020-08-07 |
Family
ID=71853596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922232800.7U Active CN211202027U (en) | 2019-12-12 | 2019-12-12 | Anchor rod anti-collapse device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202027U (en) |
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2019
- 2019-12-12 CN CN201922232800.7U patent/CN211202027U/en active Active
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