Adjustable tensioning anchor rod for geological engineering

Abstract

The utility model discloses an adjustable tensioning anchor rod for geological engineering, and relates to the field of tensioning anchor rods for geology, the adjustable tensioning anchor rod comprises a plurality of fixing frames, hollow pouring rods are inserted and mounted in round holes in the center parts of the fixing frames, anchor rods are inserted in four round hole parts on the peripheries of the fixing frames, and the hollow pouring rods are connected with the anchor rods in a sleeved mode. A plurality of sets of pouring openings are formed in the lower half portion of the hollow pouring rod at equal intervals, a front connecting plate is integrally formed on the peripheries of the portions, located in the middle sections of the hollow pouring rod and the anchor rod, of the fixing frames, an inlet and an outlet are symmetrically formed in the upper portion and the lower portion of the front connecting plate, and a middle limiting plate is fixedly installed on the periphery of the last fixing frame. Through holes are formed in the periphery of the middle limiting plate in the circumferential direction, and an adjusting mechanism is installed at the tail end of the hollow pouring rod. By arranging the adjusting mechanism, the overall length of the device can be adjusted through the adjusting mechanism, so that the situation that the lifting device is adaptive to drilling holes with different depths is avoided, and the adaptability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of geological tension anchor rod, and specifically relates to an adjustable tension anchor rod for geological engineering. BACKGROUND

[0002] When excavating a trench, a soil retaining steel plate should be first driven in, and then excavated downward, when excavated to a certain depth, the outside soil exerts an inward extrusion force on the soil retaining steel plate, and the inside of the soil retaining steel plate has no supporting force, at this time, the soil retaining steel plate is prone to deformation, at this time, a hole is drilled obliquely downward between two adjacent soil retaining steel plates, a tension anchor rod is driven in after the hole is drilled, and is fixed by pouring concrete, after the concrete solidifies, the anchor rods at the same height are fixed with the reinforcing plate, and an extrusion force is exerted on the reinforcing plate, the extrusion force acts on the soil retaining steel plate, and an effective internal supporting effect is achieved.

[0003] In the prior art, different drill holes have inconsistent depths (greater than the shortest depth), when the depth is deep, the length of the device is insufficient, and after being placed, the entire device is located inside the drill hole, causing the problem of inconvenient construction CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a purpose at: in order to solve the problem raised in the above background art, provide a kind of adjustable tension anchor rod for geological engineering.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of adjustable tension anchor rod for geological engineering, including multiple fixed frame, hollow pouring pole is inserted and installed in the center part round hole of the fixed frame, anchor rod is inserted in the outer periphery four round hole parts of the fixed frame, the inside of the lower half portion of the hollow pouring pole is equidistantly provided with multiple groups of pouring mouth, the fixed frame outer periphery of the hollow pouring pole, anchor rod middle section is integrally formed with front connecting plate, import and export are symmetrically provided in the upper and lower of the front connecting plate, the outer periphery of last fixed frame is fixedly installed with intermediate limiting plate, the outer periphery of the intermediate limiting plate is circumferentially provided with through hole, and the tail end of the hollow pouring pole is installed with adjusting mechanism.

[0006] As a further scheme of the utility model: the upper half portion outer periphery of the anchor rod is sleeved with sleeve pipe, and the outer periphery four round holes of the three fixed frames located above are fixedly connected with the outer periphery of the sleeve pipe.

[0007] As a further scheme of the utility model: the adjusting mechanism includes screw rod integrally formed in the tail end of the hollow pouring pole, the tail end of the screw rod is in the form of a cone, the outer wall of the screw rod is threadedly connected with nut, the end of the nut away from the cone is integrally formed with rotating ring, and the rear end plate is rotatably installed on the outer periphery of the rotating ring.

[0008] As a further scheme of the utility model: the adjusting mechanism further includes a guide rod integrally formed on one end face of the rear end plate, one end of the guide rod away from the rear end plate penetrates through the middle limiting plate and extends outward, and the anchor rod is integrally formed with an anti-dropping part at one end away from the rear end plate.

[0009] As a further scheme of the utility model: a sealing ring is arranged at the position where the inner wall of the sleeve and the outer wall of the anchor rod are in contact.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. By arranging the adjusting mechanism, the overall length of the adjusting mechanism can be adjusted, so that the lifting device can be adapted to different depth drill holes, and the adaptability is higher. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic view of the utility model;

[0013] Figure 2 is a structural schematic view of the utility model Figure 1 is an enlarged view of part A;

[0014] Figure 3 is a connection schematic view of the mounting frame of the utility model;

[0015] Figure 4 is a connection schematic view of the sleeve of the utility model.

[0016] In the figure: 1, fixed frame; 2, hollow pouring rod; 3, anchor rod; 4, front connecting plate; 5, inlet; 6, outlet; 7, through hole; 8, pouring port; 9, middle limiting plate; 10, rear end plate; 11, screw rod; 12, nut; 13, rotating ring; 14, guide rod; 15, sleeve. DETAILED DESCRIPTION

[0017] 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.

[0018] Please refer to Figures 1-4The utility model discloses an adjustable tension anchor rod for geological engineering, which comprises a plurality of fixing frames 1, a hollow pouring rod 2 is inserted and installed in the center part circular hole of the fixing frame 1, anchor rods 3 are inserted in the four circular hole parts of the outer periphery of the fixing frame 1, a plurality of groups of pouring openings 8 are equidistantly arranged in the lower half part of the hollow pouring rod 2, a front connecting plate 4 is integrally formed on the outer periphery of the fixing frame 1 located in the middle section of the hollow pouring rod 2 and the anchor rod 3, an inlet 5 and an outlet 6 are symmetrically arranged above and below the front connecting plate 4, an intermediate limiting plate 9 is fixedly installed on the outer periphery of the last fixing frame 1, a through hole 7 is arranged on the outer periphery of the intermediate limiting plate 9, and an adjusting mechanism is installed at the end of the hollow pouring rod 2.

[0019] In the embodiment, first, according to the oblique downward drilling depth, before the device is placed into the drilling hole, the length of the adjustable part of the device is adjusted by rotating the adjusting mechanism, so that the device can be better matched with the drilling hole, then the device is placed into the drilling hole, then one end of the hollow pouring rod 2 is hammered, at this time, the hollow pouring rod 2 transmits the force to the vertebral body, so that the screw rod 11 located behind the rear end plate 10 is completely drilled into the soil, at this time, the front connecting plate 4 and the intermediate limiting plate 9 are located in the drilling hole, then the concrete is poured into the drilling hole through the opening of the drilling hole, in the process of flowing into the drilling hole, the concrete is first filled into the lower half section of the drilling hole through the inlet 5 and the through hole 7, in the process of filling the lower half section, the air in the lower half section of the drilling hole is discharged outward through the outlet 6, after the lower half section is filled, one pouring is continuously carried out until the upper half section of the drilling hole is also filled, then a period of time is waited, after the concrete poured for the first time has a certain strength, secondary pouring is carried out, before the secondary pouring, the PVC pipe inserted in the inner wall of the hollow pouring rod 2 is pulled out, then the secondary concrete pouring is carried out from the top opening of the hollow pouring rod 2, the secondary pouring concrete flows downward along the inner cavity of the hollow pouring rod 2, then the secondary pouring concrete flows outward through the pouring opening 8, and the secondary pouring concrete exerts extrusion force on the once poured concrete, when the once poured concrete is extruded under the pouring pressure and the partial solidification, a relatively strong lateral pressure is generated, when the pressure exceeds the shear strength and the adhesive strength of the once poured concrete, cracks are generated in the once poured concrete, a tearing effect is realized, a new concrete channel is formed, the secondary pouring concrete can better fill the surrounding gaps, and a more firm connecting effect is formed.

[0020] Please refer to Figure 1 , the upper half part of the outer periphery of the anchor rod 3 is sleeved with a sleeve 15, the four circular holes of the outer periphery of the three fixing frames 1 located above are fixedly connected with the outer periphery of the sleeve 15, and a sealing ring is arranged at the position where the inner wall of the sleeve 15 and the outer wall of the anchor rod 3 are in contact.

[0021] In the embodiment, the design of the sleeve 15 can avoid the upper half of the anchor rod 3 from being bonded with the concrete, so that the upper half of the anchor rod 3 can be stretched in tension later, and the upper half of the anchor rod 3 can be deformed to form an effective tension on the blocking rod.

[0022] Please refer to Figure 1 and Figure 2 The adjusting mechanism comprises a screw rod 11 integrally formed at the tail end of the hollow pouring rod 2, the tail end of the screw rod 11 is in the shape of a cone, the outer wall of the screw rod 11 is threadedly connected with a nut 12, the end of the nut 12 away from the cone is integrally formed with a rotating ring 13, the outer periphery of the rotating ring 13 is rotatably installed with the rear end plate 10, the adjusting mechanism further comprises a guide rod 14 integrally formed on one end surface of the rear end plate 10, the end of the guide rod 14 away from the rear end plate 10 penetrates through the middle limiting plate 9 and extends outward, and the end of the anchor rod 3 away from the rear end plate 10 is integrally formed with an anti-disengagement part.

[0023] In the embodiment, before the device is put into the drill hole, a tool is docked with the nut 12, the nut 12 is rotated to drive the rotating ring 13 to rotate synchronously, at this time, the nut 12 drives the rotating ring 13 to move along the outer wall of the screw rod 11, the rotating ring 13 drives the rear end plate 10 to move synchronously, the position of the rear end plate 10 is adjusted, at this time, the rear end plate 10 drives the guide rod 14 to slide relative to the middle limiting plate 9, the design of the guide rod 14 can avoid the concrete at the lower part from being bonded with the guide rod 14, so that the strength of the position is improved.

[0024] After the device is put into the drill hole, a hammering tool is used to hammer one end of the hollow pouring rod 2, the hammering force is transmitted to the screw rod 11 along the hollow pouring rod 2, the cone of the screw rod 11 is forced to insert into the soil until the rear end plate 10 abuts against the end of the inner wall of the drill hole, so that the adjusting purpose is achieved, when the depth of the drill hole is slightly different, effective adjustment can be made, and the applicability of the device is improved.

[0025] The above only describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A tunable tensioned anchor for geotechnical engineering comprising a plurality of fixtures (1), characterized in that, The hollow pouring rod (2) is inserted and connected in the center part circular hole of the fixed frame (1), the anchor rod (3) is inserted and connected in the four circular hole parts of the outer periphery of the fixed frame (1), a plurality of groups of pouring openings (8) are equidistantly arranged in the lower half part of the hollow pouring rod (2), the front connecting plate (4) is integrally formed on the outer periphery of the fixed frame (1) at the middle section of the hollow pouring rod (2) and the anchor rod (3), the inlet (5) and the outlet (6) are symmetrically arranged above and below the front connecting plate (4), the intermediate limiting plate (9) is fixedly arranged on the outer periphery of the last fixed frame (1), the through hole (7) is circumferentially arranged on the outer periphery of the intermediate limiting plate (9), and the adjusting mechanism is arranged at the end of the hollow pouring rod (2).

2. A tensionable ground anchor according to claim 1, wherein, The sleeve pipe (15) is sleeved on the outer periphery of the upper half part of the anchor rod (3), and the four circular holes of the outer periphery of the three fixed frames (1) above are fixedly connected with the outer periphery of the sleeve pipe (15).

3. A tensionable ground anchor according to claim 2, wherein, The adjusting mechanism comprises a screw rod (11) integrally formed at the tail end of the hollow pouring rod (2), the tail end of the screw rod (11) is in the shape of a pyramid, a screw cap (12) is threadedly connected to the outer wall of the screw rod (11), a rotating ring (13) is integrally formed at the end of the screw cap (12) away from the pyramid, and a rear end plate (10) is rotatably arranged on the outer periphery of the rotating ring (13).

4. A tensionable ground anchor according to claim 3, wherein, The adjusting mechanism further comprises a guide rod (14) integrally formed on one end face of the rear end plate (10), one end of the guide rod (14) away from the rear end plate (10) penetrates the intermediate limiting plate (9) and extends outward, and a anti-disengagement part is integrally formed at one end of the anchor rod (3) away from the rear end plate (10).

5. A tensionable ground anchor according to claim 4, wherein the tensioning mechanism comprises a threaded rod, a threaded sleeve, a threaded nut and a threaded collar. A sealing ring is arranged at the position where the inner wall of the sleeve pipe (15) is in contact with the outer wall of the anchor rod (3).

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