Self-propelled anchor rod drilling guide device

Abstract

The utility model discloses a self-propelled anchor rod drilling guide device, belongs to the technical field of self-propelled anchor rod drilling guide devices, and solves the problem of poor applicability caused by the fact that the prior art cannot be applied to an anchor rod body and a connecting sleeve on a self-propelled anchor rod. The device comprises a sleeve, a plurality of clamping grooves are formed in the sleeve at equal intervals in the circumference direction of the sleeve, a clamping structure for clamping the sleeve in the middle on an anchor rod body or a connecting sleeve is arranged in each clamping groove, a plurality of sets of supporting blocks are arranged on the sleeve at equal intervals, and each set of supporting blocks is arranged on the sleeve between every two clamping grooves. An arc-shaped centering supporting plate is arranged on each group of supporting blocks, and each group of supporting blocks comprises two supporting blocks which are separately arranged on the sleeve. The self-propelled anchor rod drilling guide device is used for self-propelled anchor rod drilling guide.

Description

Technical Field

[0001] A self-propelled anchor bolt drilling guide device is used for guiding self-propelled anchor bolt drilling, belonging to the technical field of self-propelled anchor bolt drilling guide devices. Background Technology

[0002] Self-drilling anchor bolts are a technology used in highway, railway, and tunnel support engineering, suitable for complex geological conditions such as weak surrounding rock, fault fracture zones, and high ground stress deformation. Self-drilling anchor bolts mainly consist of a drill bit, a hollow anchor bolt body, a washer, and a nut. Depending on the needs, a centering device and a connecting sleeve can also be added.

[0003] Self-drilling anchors are mainly used in foundation engineering, slope engineering, tunnel and underground engineering, replacing steel bars, ordinary hollow anchors and casing construction, solving the problem of supporting non-hole strata such as soil mixed with rocks, sand and gravel, and crushed stone soil, making the project safer and more efficient.

[0004] The appropriate borehole is selected based on the geological conditions of the construction site and the drilling depth for the construction of self-drilling hollow grouting anchor bolts. During drilling, a centering device is installed on the self-drilling anchor bolt to ensure it remains centered, preventing it from shifting to one side within the borehole. This ensures a uniform grout layer around the anchor bolt, improving anchoring efficiency; it reduces direct contact between the anchor bolt and the borehole wall, preventing surface damage or wall breakage due to friction during drilling; and it ensures uniform distribution of the grout material around the anchor bolt, thereby improving grout density and anchoring effectiveness. However, the following technical problems exist:

[0005] 1. It cannot be applied to the anchor body and connecting sleeve of self-drilling anchor bolts, resulting in poor applicability;

[0006] 2. Installation is difficult, resulting in low construction efficiency. Utility Model Content

[0007] The purpose of this utility model is to provide a self-drilling anchor bolt drilling guide device, which solves the problem that the existing technology cannot be applied to the anchor bolt body and connecting sleeve on self-drilling anchor bolts, resulting in poor applicability.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A self-advancing anchor bolt drilling guide device includes a sleeve. Along the circumference of the sleeve, multiple clamping grooves are equally spaced on the sleeve. Each clamping groove is provided with a clamping structure that clamps the sleeve centrally onto the anchor bolt body or connecting sleeve. Multiple sets of support blocks are equally spaced on the sleeve, and each set of support blocks is located on the sleeve between two clamping grooves. Each set of support blocks is provided with an arc-shaped central support plate. Each set of support blocks includes two support blocks separately arranged on the sleeve.

[0010] Furthermore, the clamping structure includes a rotating shaft disposed at one end of the clamping groove, a torsion spring sleeved on both ends of the rotating shaft and connected to a sleeve, an arc-shaped clamping plate rotatably disposed on the rotating shaft and connected to the torsion spring, located on the opposite side of the rotating shaft, a limiting ring disposed on the outer wall of the arc-shaped clamping plate, and a limiting plate disposed on the outer wall of the sleeve in cooperation with the limiting ring; when the limiting plate is separated from the limiting ring, the torsion spring is in an unstressed state, and on the opposite side connected to the torsion spring, the arc-shaped clamping plate is located inside the sleeve; when the limiting plate is in cooperation with the limiting ring, the torsion spring is in a stressed state, and the arc-shaped clamping plate is placed in the clamping groove.

[0011] Furthermore, the inner wall of the arc-shaped clamp is provided with a rubber pad that cooperates with the anchor rod body or connecting sleeve.

[0012] Furthermore, on both sides of the opposite end of the rotating shaft, the sleeve is provided with a limiting groove, and the limiting plate slides in cooperation with the limiting groove.

[0013] Furthermore, a threaded hole is provided on the limiting plate, and a bolt is provided on the threaded hole.

[0014] Furthermore, along the central axis of the sleeve, inclined plates are provided at both ends of the arc-shaped central support plate, and the high end is located on one side of the arc-shaped central support plate.

[0015] Furthermore, the tilt angle of the inclined plate is 10°-45°.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] I. Before drilling a self-drilling anchor bolt, this utility model involves placing a sleeve on the anchor bolt body or connecting sleeve and clamping it in the center using a clamping structure. After clamping, the arc-shaped central support plate is evenly distributed along the circumference of the sleeve. This clamping not only guides the drilling of the self-drilling anchor bolt, but the structure can also be applied to the anchor bolt body and connecting sleeve on the self-drilling anchor bolt, improving its applicability. Furthermore, it is easy to install and can improve construction efficiency.

[0018] II. The clamping structure in this utility model uses a limiting plate inserted into a limiting ring. Under the constraint of the sleeve, the limiting plate allows the arc-shaped clamping plate to be placed in the clamping groove. At this time, the sleeve can be inserted into the anchor rod body or connecting sleeve without being blocked by the arc-shaped baffle. After being inserted into the designated position, the limiting plate in the limiting ring is pulled out. Under the reset action of the torsion spring, the arc-shaped clamping plate will be reset, causing the arc-shaped clamping plate on the opposite side connected to the torsion spring to move into the sleeve. With multiple arc-shaped clamping plates simultaneously under the action of the torsion spring, the sleeve can be clamped in the center onto the anchor rod body or connecting sleeve, realizing the quick installation and clamping fixation of this device.

[0019] Third, the present invention provides a rubber pad on the arc-shaped clamping plate to increase the friction during clamping;

[0020] Fourth, this utility model provides a limiting groove on the sleeve to facilitate the limiting of the limiting plate;

[0021] V. This utility model provides threaded holes on the limiting plate and bolts on the threaded holes. Under the action of the limiting groove, the limiting plate uses the bolts and threaded holes to press against the arc-shaped clamping plate held on the anchor rod body or connecting sleeve, so as to ensure that the self-drilling anchor rod will not shift when it rubs against the drill wall during drilling.

[0022] VI. The present invention provides inclined plates at both ends of the arc-shaped centering support plate to facilitate the guidance of the arc-shaped centering support plate and prevent problems such as the ends colliding with the inner wall of the drill hole.

[0023] VII. The tilt angle of the inclined plate is limited in this utility model to avoid being too large, which may affect subsequent grouting, and too small, which may not be able to guide the arc-shaped central support plate. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the present invention in which the limiting plate passes through the limiting ring so that the arc-shaped clamping plate is placed in the clamping groove;

[0026] Figure 2 This is a schematic diagram of the sleeve in this utility model without a clamping structure.

[0027] Figure 3 This is a schematic diagram of the clamping structure in this utility model;

[0028] Figure 4 This is a schematic diagram of the clamping structure in the present invention when it is clamping the anchor rod body or clamping the connecting sleeve.

[0029] Figure 5 This is a schematic diagram of the unfolded structure of the limiting plate and bolts in this utility model;

[0030] Figure 6 for Figure 1 Partial sectional view;

[0031] In the diagram: 1-sleeve, 2-clamping groove, 3-clamping structure, 4-support block, 5-arc-shaped central support plate, 6-rotating shaft, 7-torsion spring, 8-arc-shaped clamping plate, 9-rubber pad, 10-limiting ring, 11-limiting slide groove, 12-limiting plate, 13-threaded hole, 14-bolt, 15-inclined plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0036] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0039] Example 1

[0040] To address the problem that existing self-drilling anchor bolt drilling guide devices are not applicable to the anchor bolt body and connecting sleeve of self-drilling anchor bolts, resulting in poor applicability, such as... Figure 1-6 As shown, a self-drilling anchor bolt drilling guide device is provided, including a sleeve 1. Along the circumference of the sleeve 1, a plurality of clamping grooves 2 are equally spaced on the sleeve 1. Each clamping groove 2 is provided with a clamping structure 3 that clamps the sleeve 1 in the center on the anchor bolt body or connecting sleeve (that is, after clamping, the central axis of the sleeve and the self-drilling anchor bolt is the same or does not exceed the deviation value). A plurality of sets of support blocks 4 are equally spaced on the sleeve 1, and each set of support blocks 4 is set on the sleeve 1 between two clamping grooves 2. Each set of support blocks 4 is provided with an arc-shaped central support plate 5. Each set of support blocks 4 includes two support blocks 4 separately set on the sleeve 1.

[0041] In practice, sleeve 1 is fitted onto the anchor bolt body or connecting sleeve, or sleeve 1 is fitted onto both the anchor bolt body and connecting sleeve. The clamping structure 3 centrally clamps the sleeve onto the corresponding anchor bolt body and connecting sleeve. During self-drilling anchor bolt drilling, the multiple arc-shaped central support plates 5 on the sleeve contact the inner wall of the borehole to achieve central guidance. Each set of support blocks 4 includes two separate support blocks mounted on sleeve 1. The space between the two support blocks allows grout to pass through, avoiding interference with grouting and effectively providing support for the arc-shaped central support plates 5. In this embodiment, before drilling the self-drilling anchor bolt, a sleeve is fitted onto the anchor bolt body or connecting sleeve, and the sleeve is clamped in the center onto the anchor bolt body or connecting sleeve by a clamping structure. After being clamped in the center, the arc-shaped central support plate is evenly distributed along the circumference of the sleeve. After clamping, it can not only guide the drilling of the self-drilling anchor bolt, but this structure can also be applied to the anchor bolt body and connecting sleeve on the self-drilling anchor bolt, improving its applicability. Moreover, it is simple to install and can improve construction efficiency.

[0042] Example 2

[0043] Based on embodiment 1, the clamping structure 3 includes a rotating shaft 6 disposed at one end of the clamping groove 2, a torsion spring 7 sleeved on both ends of the rotating shaft 6 and connected to the sleeve 1, an arc-shaped clamping plate 8 rotatably disposed on the rotating shaft 6 and connected to the torsion spring 7, located on the opposite side of the rotating shaft 6, a limiting ring 10 disposed on the outer wall of the arc-shaped clamping plate 8, and a limiting plate 12 disposed on the outer wall of the sleeve in cooperation with the limiting ring 10; when the limiting plate 12 is separated from the limiting ring 10, the torsion spring 7 is in an unstressed state, and on the opposite side connected to the torsion spring 7, the arc-shaped clamping plate 8 is located in the sleeve 1; when the limiting plate 12 is in cooperation with the limiting ring 10, the torsion spring 7 is in a stressed state, and the arc-shaped clamping plate 8 is placed in the clamping groove 2.

[0044] In practice, the arc-shaped clamping plate 8 is first pushed to rotate around the outer side of the sleeve 1. When the arc-shaped clamping plate 8 is completely placed in the clamping groove 2, the limiting plate 12 is passed through the limiting ring 10. The limiting plate 12 is then in close contact with the outer wall of the sleeve 1 by the reset action of the torsion spring 7 to limit the position of the arc-shaped clamping plate 8. Since the limiting plate is placed in the clamping groove by the limiting action of the sleeve, the sleeve can be inserted into the anchor rod body or connecting sleeve. The insertion is not blocked by the arc-shaped baffle. After being inserted into the designated position, the limiting plate in the limiting ring is removed. Under the reset action of the torsion spring, the arc-shaped clamping plate will be reset, causing the arc-shaped clamping plate on the opposite side connected to the torsion spring to move into the sleeve. With multiple arc-shaped clamping plates simultaneously under the action of the torsion spring, the sleeve can be clamped in the center onto the anchor rod body or connecting sleeve, realizing the quick installation and clamping fixation of this device.

[0045] Example 3

[0046] Based on Embodiment 2, a rubber pad 9 is provided on the inner side wall of the arc-shaped clamping plate 8 to cooperate with the anchor rod body or connecting sleeve. The purpose of providing the rubber pad on the arc-shaped clamping plate is to increase the friction during clamping.

[0047] Example 4

[0048] Based on embodiment 3, on both sides of the opposite end of the rotating shaft 6, the sleeve 1 is provided with limiting grooves 11, and the limiting plate 12 slides in cooperation with the limiting grooves 11. The limiting grooves on the sleeve facilitate further limiting of the limiting plate, such as the limiting plate sliding under the limiting action of the limiting grooves.

[0049] Example 5

[0050] Based on Embodiment 4, the limiting plate 12 is provided with a threaded hole 13, and a bolt 14 is provided on the threaded hole 13. After the arc-shaped clamping plate 8 is clamped on the anchor rod body or connecting sleeve, the limiting plate is inserted back into the limiting groove, and the bolt is tightened on the threaded hole 13 to abut the limiting ring or directly to the arc-shaped clamping plate 8. In this embodiment, a threaded hole is provided on the limiting plate, and a bolt is provided on the threaded hole. Under the action of the limiting groove, the limiting plate abuts the arc-shaped clamping plate clamped on the anchor rod body or connecting sleeve through the cooperation of the bolt and the threaded hole, so as to ensure that the self-drilling anchor rod will not shift when it rubs against the drill wall during drilling.

[0051] Example 6

[0052] Based on embodiment 5, inclined plates 15 are provided at both ends of the arc-shaped centering support plate 5 along the central axis of the sleeve 1, with the upper end located on one side of the arc-shaped centering support plate 5. Providing inclined plates at both ends of the arc-shaped centering support plate facilitates guidance of the arc-shaped centering support plate and prevents problems such as the ends easily colliding with the inner wall of the borehole.

[0053] Example 7

[0054] Based on Example 6, the tilt angle of the inclined plate 15 is 10°-45°, such as 15°, 20°, 30°, and 40°. The tilt angle of the inclined plate is limited to avoid being too large, which may affect subsequent grouting, and to avoid being too small, which may not be able to guide the arc-shaped central support plate.

Claims

1. A self-propelled anchor bolt drilling guide device, characterized in that: Includes a sleeve (1), and along the circumference of the sleeve (1), multiple clamping grooves (2) are provided at equal intervals on the sleeve (1). Each clamping groove (2) is provided with a clamping structure (3) that clamps the sleeve (1) in the center on the anchor rod body or connecting sleeve. Multiple sets of support blocks (4) are provided at equal intervals on the sleeve (1), and each set of support blocks (4) is provided on the sleeve (1) between two clamping grooves (2). Each set of support blocks (4) is provided with an arc-shaped central support plate (5). Each set of support blocks (4) includes two support blocks that are separately provided on the sleeve (1).

2. The self-propelled anchor bolt drilling guide device according to claim 1, characterized in that: The clamping structure (3) includes a rotating shaft (6) set at one end of the clamping groove (2), a torsion spring (7) sleeved on both ends of the rotating shaft (6) and connected to the sleeve (1), an arc-shaped clamping plate (8) that can be placed in the clamping groove (2) and connected to the torsion spring (7) is rotatably set on the rotating shaft (6), located on the opposite side of the rotating shaft (6), a limiting ring (10) is set on the outer wall of the arc-shaped clamping plate (8), and a limiting plate (12) that cooperates with the limiting ring (10) is placed on the outer wall of the sleeve; when the limiting plate (12) is separated from the limiting ring (10), the torsion spring (7) is in an unforced state, and on the opposite side connected to the torsion spring (7), the arc-shaped clamping plate (8) is located in the sleeve (1), and when the limiting plate (12) cooperates with the limiting ring (10), the torsion spring (7) is in a force-bearing state, and the arc-shaped clamping plate (8) is placed in the clamping groove (2).

3. The self-propelled anchor bolt drilling guide device according to claim 2, characterized in that: The inner wall of the arc-shaped clamp (8) is provided with a rubber pad (9) that cooperates with the anchor rod body or connecting sleeve.

4. The self-propelled anchor bolt drilling guide device according to claim 2, characterized in that: Located on both sides of the opposite end of the rotating shaft (6), the sleeve (1) is provided with a limiting groove (11), and the limiting plate (12) slides in cooperation with the limiting groove (11).

5. The self-propelled anchor bolt drilling guide device according to claim 4, characterized in that: The limiting plate (12) is provided with a threaded hole (13), and a bolt (14) is provided on the threaded hole (13).

6. The self-propelled anchor bolt drilling guide device according to claim 1, characterized in that: Along the central axis of the sleeve (1), inclined plates (15) are provided on both ends of the arc-shaped central support plate (5), and the high end is located on one side of the arc-shaped central support plate (5).

7. A self-propelled anchor bolt drilling guide device according to claim 6, characterized in that: The tilt angle of the inclined plate (15) is 10°-45°.

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