Tunnel anchoring and shotcreting support

By setting an anti-slip shell and elastic clip on the outside of the anchor rod body, and combining the ejector rod with the inner wall of the hole, the problem of loose anchor rods is solved, and the stability and firmness of the anchor spray support are improved.

CN223398701UActive Publication Date: 2025-09-30CHONGQING MINHAI CONSTRUCTION ENGINEERING CO LTD
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Patent Information

Application Number
CN202422254033.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-13
Publication Date
2025-09-30
Estimated Expiration
2034-09-13

AI Technical Summary

Technical Problem

In the existing anchor spraying support, the surface of the anchor rod is relatively smooth and is easy to loosen after long-term use, affecting the support effect.

Method used

An anti-slip shell is set on the outside of the anchor rod body, and a through groove is opened in the middle of the side wall of the anti-slip shell. Combined with elastic clips and inclined clips, it is clamped with the inner wall of the hole through the ejector rod to enhance friction. An elastic clip is set at the bottom of the anchor rod body to contact the inner wall of the hole, and combined with concrete filling to improve stability.

Benefits of technology

Effectively prevent the rocking of anchor rods, enhance the friction between anchor rods and holes, improve support stability and firmness, and ensure support effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a tunnel anchoring and shotcreting support, which relates to the technical field of tunnel construction and comprises an anchor rod seat, an inserting hole is arranged in the middle of the anchor rod seat, an anchor rod component is arranged in the middle of the inserting hole, a base plate is arranged at the top of the anchor rod seat, a limit rod is arranged above the base plate, and the anchor rod component comprises an anchor rod main body. An anti-skid shell is arranged outside the anchor rod body, an ejection assembly is arranged in the middle of the side wall of the anti-skid shell, a groove is formed in the bottom of the anchor rod body, and an elastic clamping plate is arranged at the bottom of the groove. The friction force between the anchor rod body and a hole is improved through matched use of the anchor rod body and the anti-skid shell, the through groove is formed in the middle of the side wall of the anti-skid shell so that concrete can be conveniently filled, the elastic clamping plate is expanded when used, the elastic clamping plate is made to make contact with the inner wall of the hole, and the anti-skid shell is not prone to falling off. The use stability of the device is further improved, and the situation that the anchor rod body shakes during use, and the supporting effect is affected is prevented.
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Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a tunnel anchor spraying support. Background Art

[0002] Anchor shotcrete is an engineering measure that uses anchor rods and shotcrete to support the sides (see underground engineering support). Anchor rods and shotcrete can be used alone, but better support effects can be achieved when used in combination. Anchor rods are mostly made of metal materials such as steel bars, high-strength steel wire bundles, etc. Plastic anchor rods are also used, but they are rare. Ordinary anchor rods are not prestressed, but prestressed anchor rods are also used. The function of anchor rods is to increase the friction between the joint surface and the rock layer, and to enhance the stability of the rock block or rock layer. The function of shotcrete is to reinforce the side and prevent the rock blocks from lifting, peeling or falling. The combination of the two can give full play to the self-bearing capacity of the side.

[0003] The surface of the anchor rod of the existing anchor spraying support is relatively smooth during use, and is prone to loosening after long-term use, affecting the support effect. Therefore, it is necessary to provide a tunnel anchor spraying support to solve the problem. Utility Model Content

[0004] The main purpose of the utility model is to provide a tunnel anchor spraying support, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A tunnel anchor spraying support, comprising an anchor rod seat, a plug hole is provided in the middle of the anchor rod seat, an anchor rod assembly is provided in the middle of the plug hole, a pad is provided on the top of the anchor rod seat, and a limit rod is provided above the pad;

[0007] The anchor rod assembly includes an anchor rod body, an anti-skid shell is provided on the outside of the anchor rod body, and an ejection assembly is provided in the middle of the side wall of the anti-skid shell, a groove is provided at the bottom of the anchor rod body, and an elastic clamping plate is provided at the bottom of the groove;

[0008] The ejection assembly includes an ejection groove, an elastic connecting plate is provided in the middle of the ejection groove, a protrusion is provided on one side of the elastic connecting plate, and an inclined clamping plate is provided on the other side of the elastic connecting plate, an inclined surface is provided on the bottom side of the protrusion, and an ejection rod is provided on the side of the inclined surface.

[0009] Preferably, the outer wall of the anti-slip shell contacts the inner wall of the plug-in hole, and the anti-slip shell is sleeved on the outside of the anchor rod body. A through groove is provided in the middle of the side wall of the anti-slip shell near the bottom, and the through groove passes through the interior of the anti-slip shell. The anchor rod body passes through the anti-slip shell, and a limiting groove is provided in the middle of the top of the anchor rod body.

[0010] Preferably, a groove is provided at the bottom of one end of the anchor rod body away from the limiting groove, and there are three grooves, which are evenly distributed at the bottom end of the anchor rod body. An elastic clip is fixedly connected to the inner wall of the bottom of the groove, and the elastic clip is arranged corresponding to the groove, and the elastic clip is arranged at an inclined angle inside the groove.

[0011] Preferably, an ejection groove is provided on the side wall of the anti-slip shell near the top, and there are three ejection grooves, which are evenly distributed in the middle of the side wall of the anti-slip shell. An elastic connecting plate is fixedly connected to the bottom of the ejection groove, and the elastic connecting plate is arranged corresponding to the ejection groove.

[0012] Preferably, the elastic connecting plate is fixedly connected to a protrusion on the side close to the inside of the anti-slip shell, and an inclined surface is provided on the bottom side of the protrusion, and the side of the protrusion away from the elastic connecting plate is set at a certain distance from the anchor rod body, and the side of the elastic connecting plate away from the protrusion is fixedly connected to an inclined clamping plate, and the inclined clamping plate is provided at an inclined angle on the side of the elastic connecting plate, and an ejector rod is fixedly connected to the outer wall of the anchor rod body, and an arc-shaped surface is provided on the top of the ejector rod, and the arc-shaped surface is in contact with the inclined surface.

[0013] Preferably, the limit groove is located above the anchor rod seat, and a limit rod is inserted into the limit groove. A pad is provided at the bottom of the limit rod, and the pad is sleeved on the outside of the anchor rod body, and the bottom of the pad is in contact with the top of the anchor rod seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The anchor rod body is used in conjunction with the anti-slip shell to increase the friction between the anchor rod body and the hole. A through groove is provided in the middle of the side wall of the anti-slip shell to facilitate the filling of concrete. The elastic card is opened when in use so that the elastic card contacts the inner wall of the hole, further improving the stability of the device and preventing the anchor rod body from shaking during use, which affects the support effect.

[0016] 2. The ejection rod is provided to realize the ejection of the protrusion, the elastic connecting plate and the inclined clamping plate, so that the inclined clamping plate is clamped on the inner wall of the hole, thereby increasing the friction between the anti-slip shell and the anchor rod body. The inclined clamping plate is inclined to form teeth, which is used in conjunction with the elastic clamping plate to further enhance the firmness of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the entire device of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the device of the utility model;

[0019] Figure 3It is a structural diagram of the ejection assembly of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the anchor rod assembly of the utility model.

[0021] In the figure: 1. Anchor rod seat; 2. Plug-in hole; 3. Anchor rod assembly; 4. Anchor rod body; 5. Anti-slip shell; 6. Through groove; 7. Groove; 8. Elastic clamping plate; 9. Ejector assembly; 10. Ejector groove; 11. Elastic connecting plate; 12. Bump; 13. Inclined clamping plate; 14. Ejector rod; 15. Arc surface; 16. Inclined surface; 17. Pad; 18. Limit rod; 19. Limit groove. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1 、 Figure 2 、 Figure 4 As shown, a tunnel anchor spraying support includes an anchor seat 1, a plug hole 2 is provided in the middle of the anchor seat 1, and an anchor assembly 3 is provided in the middle of the plug hole 2, a pad 17 is provided on the top of the anchor seat 1, and a limit rod 18 is provided above the pad 17, a limit groove 19 is located above the anchor seat 1, and the limit rod 18 is inserted into the limit groove 19, and a pad 17 is provided at the bottom of the limit rod 18, and the pad 17 is sleeved on the outside of the anchor body 4, and the bottom of the pad 17 is in contact with the top of the anchor seat 1;

[0024] The anchor rod assembly 3 includes an anchor rod body 4, an anti-slip shell 5 is provided on the outside of the anchor rod body 4, and a ejection assembly 9 is provided in the middle of the side wall of the anti-slip shell 5, a groove 7 is provided at the bottom of the anchor rod body 4, and an elastic card plate 8 is provided at the bottom of the groove 7, the outer wall of the anti-slip shell 5 is in contact with the inner wall of the plug hole 2, and the anti-slip shell 5 is sleeved on the outside of the anchor rod body 4, a through groove 6 is provided in the middle of the side wall of the anti-slip shell 5 near the bottom, and the through groove 6 passes through the interior of the anti-slip shell 5, the anchor rod body 4 passes through the anti-slip shell 5, and a limiting groove 19 is provided in the middle of the top of the anchor rod body 4, and a groove 7 is provided at the bottom of the end of the anchor rod body 4 away from the limiting groove 19, and the groove There are three 7, which are evenly distributed at the bottom end of the anchor rod body 4. An elastic card plate 8 is fixedly connected to the inner wall of the bottom of the groove 7, and the elastic card plate 8 is corresponding to the groove 7. The elastic card plate 8 is arranged at an inclined angle with the inside of the groove 7. The anchor rod body 4 is used in conjunction with the anti-slip shell 5 to improve the friction between the hole, and a through groove 6 is opened in the middle of the side wall of the anti-slip shell 5 to facilitate the filling of concrete. The elastic card plate 8 is opened when in use, so that the elastic card plate 8 contacts the inner wall of the hole, further improving the stability of the device and preventing the anchor rod body 4 from shaking during use, thereby affecting the support effect.

[0025] See also Figure 1 、 Figure 2 、 Figure 3 As shown, the ejection assembly 9 includes an ejection groove 10, an elastic connecting plate 11 is provided in the middle of the ejection groove 10, a protrusion 12 is provided on one side of the elastic connecting plate 11, and an inclined card plate 13 is provided on the other side of the elastic connecting plate 11, an inclined surface 16 is provided on the bottom side of the protrusion 12, and an ejection rod 14 is provided on the side of the inclined surface 16, an ejection groove 10 is opened on the side wall of the anti-slip shell 5 near the top, and there are three ejection grooves 10, which are evenly distributed in the middle of the side wall of the anti-slip shell 5, the bottom of the ejection groove 10 is fixedly connected with the elastic connecting plate 11, and the elastic connecting plate 11 is corresponding to the ejection groove 10, the side of the elastic connecting plate 11 near the inside of the anti-slip shell 5 is fixedly connected with the protrusion 12, and the bottom side of the protrusion 12 is provided with an inclined surface 1 6. The side of the protrusion 12 away from the elastic connecting plate 11 is set at a certain distance from the anchor rod body 4. The side of the elastic connecting plate 11 away from the protrusion 12 is fixedly connected with an inclined card plate 13, and the inclined card plate 13 is set at an inclined angle on the side of the elastic connecting plate 11. A knockout rod 14 is fixedly connected to the outer wall of the anchor rod body 4, and the top of the knockout rod 14 is provided with an arc surface 15. The arc surface 15 contacts the inclined surface 16. The knockout 12, the elastic connecting plate 11 and the inclined card plate 13 are ejected by the provided knockout rod 14, so that the inclined card plate 13 is clamped on the inner wall of the hole, thereby improving the friction between the anti-slip shell 5 and the anchor rod body 4. The inclined card plate 13 is inclined to form teeth, which is used in conjunction with the elastic card plate 8 to further ensure the firmness of the device.

[0026] It should be noted that the present invention is a tunnel anchor spraying support. When in use, one end of the anchor rod body 4 close to the limiting groove 19 is inserted into the inside of the anti-skid shell 5, so that the arc surface 15 at one end of the ejector rod 14 on the outer wall of the anchor rod body 4 contacts the inclined surface 16, and then the anti-skid shell 5 and the anchor rod body 4 are passed through the anchor rod seat 1 and connected in the hole. During the insertion process, the inner wall of the hole squeezes the elastic clip 8 at the bottom of the anchor rod body 4, so that the elastic clip 8 shrinks to the inside of the groove 7. When the bottom of the anchor rod body 4 contacts the bottom end of the hole, the anchor rod body 4 is pulled again, and the anti-skid shell 5 remains stationary, so that the top of the elastic clip 8 contacts the bottom of the anti-skid shell 5, thereby realizing the ejection of multiple elastic clips 8, so that the elastic clip 8 is clamped in Inside the hole, at the same time, the ejection rod 14 on the outer wall of the anchor rod body 4 realizes the ejection of the protrusion 12, and the protrusion 12 realizes the ejection of the elastic connecting plate 11 and the inclined clamping plate 13, so that the inclined clamping plate 13 is clamped on the inner wall of the hole, further realizing the limiting connection between the anchor rod body 4 and the anti-slip shell 5, improving the stability of the use of the device, and a through groove 6 is provided on the outer wall of the anti-slip shell 5 to facilitate the filling of concrete, so that the concrete enters the inner wall of the anti-slip shell 5 through the through groove 6 and contacts the anchor rod body 4, thereby improving the support stability of the device, and then the pad 17 is sleeved on one end of the anchor rod body 4, and the limiting rod 18 is connected to the limiting groove 19 at one end of the anchor rod body 4, thereby realizing the limiting connection between the anchor rod body 4, the anti-slip shell 5 and the anchor rod seat 1.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel bolt spraying support, comprising an anchor rod seat (1), characterized in that: A plug hole (2) is provided in the middle of the anchor rod seat (1), and an anchor rod assembly (3) is provided in the middle of the plug hole (2); a pad (17) is provided on the top of the anchor rod seat (1), and a limit rod (18) is provided above the pad (17); The anchor rod assembly (3) comprises an anchor rod body (4), an anti-skid shell (5) is provided on the outside of the anchor rod body (4), and an ejection assembly (9) is provided in the middle of the side wall of the anti-skid shell (5), a groove (7) is provided at the bottom of the anchor rod body (4), and an elastic clamping plate (8) is provided at the bottom of the groove (7); The ejection assembly (9) includes an ejection groove (10), an elastic connecting plate (11) is provided in the middle of the ejection groove (10), a protrusion (12) is provided on one side of the elastic connecting plate (11), and an inclined clamping plate (13) is provided on the other side of the elastic connecting plate (11), an inclined surface (16) is provided on one side of the bottom of the protrusion (12), and an ejection rod (14) is provided on the side of the inclined surface (16).

2. The tunnel bolt spraying support according to claim 1, characterized in that: The outer wall of the anti-skid shell (5) contacts the inner wall of the plug hole (2), and the anti-skid shell (5) is sleeved on the outside of the anchor rod body (4). A through groove (6) is provided in the middle of the side wall of the anti-skid shell (5) near the bottom, and the through groove (6) passes through the interior of the anti-skid shell (5). The anchor rod body (4) passes through the anti-skid shell (5), and a limiting groove (19) is provided in the middle of the top of the anchor rod body (4).

3. The tunnel bolt spraying support according to claim 2, characterized in that: A groove (7) is provided at the bottom of one end of the anchor rod body (4) away from the limiting groove (19), and there are three grooves (7) evenly distributed at the bottom end of the anchor rod body (4). An elastic clamping plate (8) is fixedly connected to the inner wall of the bottom of the groove (7), and the elastic clamping plate (8) is arranged corresponding to the groove (7). The elastic clamping plate (8) is arranged at an inclined angle inside the groove (7).

4. The tunnel bolt spraying support according to claim 1, characterized in that: The side wall of the anti-slip shell (5) near the top is provided with an ejection groove (10), and there are three ejection grooves (10) which are evenly distributed in the middle of the side wall of the anti-slip shell (5). The bottom of the ejection groove (10) is fixedly connected with an elastic connecting plate (11), and the elastic connecting plate (11) is arranged corresponding to the ejection groove (10).

5. The tunnel bolt spraying support according to claim 4 is characterized in that: The elastic connecting plate (11) is fixedly connected to a protrusion (12) on one side close to the inside of the anti-slip shell (5), and an inclined surface (16) is provided on one side of the bottom of the protrusion (12). The protrusion (12) is arranged at a certain distance from the anchor rod body (4) on the side away from the elastic connecting plate (11). The elastic connecting plate (11) is fixedly connected to an inclined clamping plate (13) on the side away from the protrusion (12), and the inclined clamping plate (13) is arranged at an inclined angle on the side of the elastic connecting plate (11). An ejector rod (14) is fixedly connected to the outer wall of the anchor rod body (4), and an arcuate surface (15) is provided on the top of the ejector rod (14). The arcuate surface (15) contacts the inclined surface (16).

6. The tunnel bolt spraying support according to claim 2, characterized in that: The limiting groove (19) is located above the anchor rod seat (1), and a limiting rod (18) is inserted into the limiting groove (19). A pad (17) is provided at the bottom of the limiting rod (18), and the pad (17) is sleeved on the outside of the anchor rod body (4). The bottom of the pad (17) contacts the top of the anchor rod seat (1).