Combined hollow grouting anchor rod for soft rock tunnel

Abstract

The utility model relates to the technical field of hollow grouting anchor rods, and discloses a soft rock tunnel combined type hollow grouting anchor rod which comprises an anchor rod body, a cylinder and a filtering anti-blocking mechanism, a threaded groove is formed in the outer side of the anchor rod body, a grouting hole is formed in the anchor rod body, and the cylinder is fixed to the outer side of the upper end of the anchor rod body. A filtering anti-blocking mechanism extending into the anchor rod body is installed on the cylinder, the filtering anti-blocking mechanism comprises a filtering net, through connection rods, a sliding ring and a driving mechanism, the filtering net is arranged at the upper end of the interior of the anchor rod body, the through connection rods extending to the exterior of the anchor rod body are fixed to the two sides of the filtering net, and the through connection rods are fixed to the sliding ring; the sliding ring is slidably mounted on the outer side of the cylinder, and a driving mechanism used for driving the switching rod and the filter screen to move up and down is mounted on the cylinder. The filter has a filtering function and is convenient to clean and capable of preventing blockage.

Description

TECHNICAL FIELD

[0001] The utility model relates to hollow grouting anchor rod technical field especially relates to a soft rock tunnel combined hollow grouting anchor rod. BACKGROUND

[0002] When building a tunnel in a soft rock area, cement mortar needs to be injected into the rock soil for reinforcement. Hollow grouting anchor rod is an important device for grouting. Hollow grouting anchor rod is mainly composed of hollow rod body, grouting plug, pad and nut.

[0003] The existing hollow grouting anchor rod does not have a filtering function. Since the cement mortar may contain some larger sand and gravel, the large-particle sand and gravel entering the hollow grouting anchor rod can easily cause blockage. Therefore, in view of the above status, it is urgent to develop a soft rock tunnel combined hollow grouting anchor rod with filtering function, easy to clean and prevent blockage, to overcome the shortcomings in current practical applications and meet the current needs. SUMMARY

[0004] The utility model discloses a soft rock tunnel combined hollow grouting anchor rod to solve the problem raised in the background art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A soft rock tunnel combined hollow grouting anchor rod, comprising an anchor rod body, a cylindrical barrel and a filter anti-blocking mechanism, the outer side of the anchor rod body is provided with a threaded groove, the anchor rod body is provided with a grouting hole, the upper end of the outer side of the anchor rod body is fixed with a cylindrical barrel, the filter anti-blocking mechanism is installed on the cylindrical barrel and extends into the anchor rod body, the filter anti-blocking mechanism comprises a filter screen, an adapter rod, a sliding ring and a driving mechanism, the filter screen is arranged at the upper end inside the anchor rod body, the two sides of the filter screen are fixed with adapter rods extending to the outside of the anchor rod body, the adapter rods are fixed with the sliding ring, the sliding ring is slidingly installed on the outer side of the cylindrical barrel, and the cylindrical barrel is installed with a driving mechanism for driving the adapter rods and the filter screen to move up and down.

[0007] Preferably, the driving mechanism comprises a rotating shaft, a gear and a rack, the rotating shaft is rotatably connected with the cylindrical barrel, the rotating shaft is fixed with a gear, one side of the gear is provided with a rack engaged with the gear, and the rack is fixed on one adapter rod.

[0008] Preferably, the anchor rod body is made of high carbon steel.

[0009] Preferably, the anchor rod body is internally provided with a clamping hole for clamping the filter screen.

[0010] Preferably, a stopper is fixed on the anchor rod body, a washer is arranged on the upper side of the stopper, and a nut is arranged on the anchor rod body for pressing the washer.

[0011] The soft rock tunnel combined hollow grouting anchor rod has the advantages that the anchor rod body is inserted into the pre-formed hole in the rock and soil, then cement mortar is injected from the upper end of the anchor rod body, the cement mortar flows into the rock and soil along the grouting hole, thereby reinforcing the rock and soil, meanwhile, the large stone particles in the cement mortar are filtered by the filter screen, preventing the large stone particles from blocking the grouting hole, when the filter screen is blocked, the rotating shaft is rotated to drive the gear to move upward, the rack is driven to move upward by the gear, the adapter rod and the filter screen are driven to move upward by the rack, and the filter screen pushes the large stone particles outward. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A three-dimensional structure diagram of the utility model Figure 1 .

[0013] Figure 2 A three-dimensional structure diagram of the utility model Figure 2 .

[0014] Figure 3 An internal sectional view of the utility model.

[0015] Figure 4 A partial structure diagram of the utility model.

[0016] LEGEND:

[0017] 1, anchor rod body; 101, threaded groove; 102, grouting hole; 103, clamping hole; 2, cylindrical barrel; 3, filter anti-blocking mechanism; 301, filter screen; 302, adapter rod; 303, sliding ring; 304, driving mechanism; 3041, rotating shaft; 3042, gear; 3043, rack; 4, nut; 5, washer; 6, stopper. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] The specific embodiments are given below.

[0020] Reference is made to Figures 1-4The utility model discloses a kind of soft rock tunnel combined hollow grouting anchor rods, including anchor rod body 1, cylindrical barrel 2 and filter anti-blocking mechanism 3, anchor rod body 1 is made of high carbon steel, so that it has good strength and hardness, the outside of anchor rod body 1 is provided with thread groove 101, the friction of anchor rod body 1 is greater after being inserted into hole by the arrangement of thread groove 101, grouting hole 102 is provided in anchor rod body 1, grouting hole 102 is used for cement mortar to flow, the outside of the upper end of anchor rod body 1 is fixed with cylindrical barrel 2, filter anti-blocking mechanism 3 extending into anchor rod body 1 is installed on cylindrical barrel 2, filter anti-blocking mechanism 3 includes: filter screen 301, adapter rod 302, sliding ring 303 and drive mechanism 304, filter screen 301 is set to inside upper end of anchor rod body 1, anchor rod body 1 is provided with clamping hole 103 for clamping filter screen 301, the both sides of filter screen 301 are fixed with adapter rod 302 extending to the outside of anchor rod body 1, adapter rod 302 is fixed with sliding ring 303, sliding ring 303 is slidingly installed on the outside of cylindrical barrel 2, drive mechanism 304 for driving adapter rod 302 and filter screen 301 to move up and down is installed on cylindrical barrel 2, drive mechanism 304 includes: rotating shaft 3041, gear 3042 and rack 3043, rotating shaft 3041 is rotatably connected with cylindrical barrel 2, rotating shaft 3041 is fixed with gear 3042, one side of gear 3042 is provided with rack 3043 meshing with it, rack 3043 is fixed on one adapter rod 302, when using, anchor rod body 1 is inserted into the hole in rock and soil that is pre-punched, then, cement mortar is injected from the upper end of anchor rod body 1, cement mortar flows into rock and soil along grouting hole 102, to be reinforced.

[0021] Anchor rod body 1 is fixed with grout stopper 6, the upper side of grout stopper 6 is installed with pad 5 on anchor rod body 1, nut 4 for pressing pad 5 is installed on anchor rod body 1.

[0022] Working principle: the soft rock tunnel combined hollow grouting anchor rod, anchor rod body 1 is inserted into the hole in rock and soil that is pre-punched, then, cement mortar is injected from the upper end of anchor rod body 1, cement mortar flows into rock and soil along grouting hole 102, to be reinforced, simultaneously, large particle stones in cement mortar are filtered by filter screen 301, prevent large particle stones from blocking grouting hole 102, when filter screen 301 is blocked, rotating shaft 3041 is rotated to drive gear 3042, gear 3042 is rotated to drive rack 3043 to move up, adapter rod 302 and filter screen 301 are moved up by rack 3043, so that filter screen 301 ejects large particle stones outward.

[0023] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A soft rock tunnel combined hollow grouting anchor rod, characterized in that, The utility model relates to an anchor rod body (1), cylindrical barrel (2) and filter prevent mechanism (3) are included, the outside of anchor rod body (1) is provided with thread groove (101), is provided with the grouting hole (102) in anchor rod body (1), the upper end outside of anchor rod body (1) is fixed with cylindrical barrel (2), is installed filter prevent mechanism (3) extending to anchor rod body (1) in cylindrical barrel (2), filter prevent mechanism (3) includes: filter screen (301), adapter rod (302), slip ring (303) and drive mechanism (304), filter screen (301) sets up inside anchor rod body (1) upper end, both sides of filter screen (301) are fixed with the adapter rod (302) extending to anchor rod body (1) outside, adapter rod (302) is fixed with slip ring (303), slip ring (303) is slidably installed in the outside of cylindrical barrel (2), is installed drive mechanism (304) for the adapter rod (302) and filter screen (301) are moved up and down on cylindrical barrel (2).

2. The soft rock tunnel combined hollow grouting anchor rod according to claim 1, characterized in that, The drive mechanism (304) includes: rotating shaft (3041), gear (3042) and rack (3043), the rotating shaft (3041) is rotatably connected with the cylindrical barrel (2), the rotating shaft (3041) is fixed with the gear (3042), one side of the gear (3042) is provided with the rack (3043) engaged with it, the rack (3043) is fixed on an adapter rod (302).

3. The soft rock tunnel combined hollow grouting anchor rod according to claim 1, characterized in that, The anchor rod body (1) is made of high carbon steel.

4. The soft rock tunnel combined hollow grouting anchor rod according to claim 1, characterized in that, The anchor rod body (1) is provided with a clamping hole (103) inside for clamping the filter screen (301).

5. The soft rock tunnel combined hollow grouting anchor rod according to claim 1, characterized in that, The anchor rod body (1) is fixed with a grouting stopper (6), a backing plate (5) is installed on the anchor rod body (1) on the upper side of the grouting stopper (6), and a nut (4) is installed on the anchor rod body (1) for pressing the backing plate (5).

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