Foundation pit support anchoring device

Abstract

The present invention discloses a foundation pit support anchoring device, comprising: an anchor body, which is a hollow structure; a plurality of cavities are spaced apart within the sidewall of the anchor body, the plurality of cavities being equidistantly spaced circumferentially along the central axis of the anchor body; the cavity being provided with a feed port and a discharge port; the outer sidewall of the anchor body being recessed to form an annular groove; a plurality of material outlets being circumferentially provided at the lower portion of the anchor body; and a sealing block being provided within the anchor body; and multiple adjustment mechanisms, the adjustment mechanisms comprising a piston sealingly slidingly disposed within the cavity; the piston being connected to a push rod; the lower end of the push rod slidingly passing through the bottom of the cavity and positioned within the annular groove; the lower end of the push rod being connected to an expansion assembly; the expansion assembly comprising two hinged support rods, the lower support rod being hinged to the annular groove; and the upper support rod being slidably connected to the annular groove. The present invention improves the stability of anchor support by providing the adjustment mechanism and the expansion assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit support, and more particularly to a foundation pit support anchoring device. Background Art

[0002] Foundation pit support is a measure used to support, reinforce, and protect the pit sidewalls and surrounding environment to ensure the safety of the surrounding environment during underground structure construction. Anchor bolting is commonly used to secure the perimeter of the pit during construction. Anchor bolting offers advantages such as low cost, effective support, ease of operation, and flexibility. However, existing anchor bolts often suffer from insufficient anchoring force, which can lead to anchor failure. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] Another object of the present invention is to provide a foundation pit support anchoring device, which improves the stability of anchor support by providing an adjustment mechanism and an expansion component.

[0005] In order to achieve these objects and other advantages of the present invention, a foundation pit support anchoring device is provided, comprising:

[0006] The anchor rod body is a hollow structure, wherein a plurality of cavities are provided in the side wall of the anchor rod body, and the plurality of cavities are arranged at equal intervals along the circumferential direction of the central axis of the anchor rod body, the cavity is provided with a feed port and a discharge port, the feed port and the discharge port are both connected to the anchor rod body, the outer side wall of the anchor rod body is recessed to form an annular groove, and the annular groove is located below the cavity, wherein a plurality of material outlets are provided circumferentially at the lower part of the anchor rod body, a sealing block is provided in the anchor rod body, and the sealing block is located below the feed port;

[0007] Multiple groups of adjustment mechanisms are provided in a one-to-one correspondence with the multiple cavities, the adjustment mechanisms include a piston sealingly slidably disposed in the cavity, the piston is connected to a push rod, the lower end of the push rod slides through the bottom of the cavity and is located in the annular groove, the lower end of the push rod is connected to an expansion assembly, the expansion assembly includes two hinged support rods, the lower support rod is hinged to the annular groove, and the upper support rod is slidably connected to the annular groove;

[0008] Preferably, a plurality of fixing rods are provided at intervals in the annular groove, and the plurality of fixing rods are provided in one-to-one correspondence with the plurality of expansion assemblies. A fixing block is slidably provided on the fixing rod, and a support rod located above is hinged to the fixing block. A positioning hole is provided on the fixing block, and the positioning hole is provided along the length direction of the fixing rod, and the lower end of the push rod passes through the positioning hole.

[0009] The fixing block is recessed to form a groove, the positioning hole passes through the groove, a fixing assembly is provided in the groove, the fixing assembly includes two arc-shaped fixing plates with hinged ends, a positioning plate is provided at the free end of the fixing plate, a through hole is provided on the positioning plate, the through hole is located outside the groove, the two positioning plates are fixed by screws and nuts, wherein the push rod passes through the two fixing plates, and the height of the fixing plates is slightly smaller than the height of the groove.

[0010] Preferably, the inner side wall of the fixing plate is provided with a rubber layer.

[0011] Preferably, a material guide plate with a small upper diameter and a large lower diameter is provided in the anchor body, the end of the material guide plate with a large diameter is circumferentially fixed to the inner side wall of the anchor body, and the end of the material guide plate with a large diameter is slightly lower than the feed port.

[0012] The sealing block can move downward relative to the anchor rod body. When the piston moves to the lowest position, the upper end of the piston is slightly lower than the discharge port, and the sealing block blocks the discharge port; when the sealing block moves to the lowest position, the material outlet is higher than the upper end of the sealing block.

[0013] Preferably, a circular sealing ring is provided on the lower surface of the piston, and the bottom of the cavity is recessed downward to form an annular sealing groove to accommodate the sealing ring, wherein the push rod passes through the sealing ring in sequence, and when the sealing ring is located in the sealing groove, the lower surface of the piston contacts the bottom of the cavity, and the upper surface of the piston is slightly lower than the discharge port.

[0014] Preferably, the feed port is arc-shaped.

[0015] Preferably, any two adjacent fixing blocks are connected by an arc-shaped connecting rod, and the connecting rod is located in the groove.

[0016] Preferably, the lower end of the anchor body is provided with a conical tip portion.

[0017] The present invention has at least the following beneficial effects:

[0018] The present invention effectively improves the reinforcing force of the anchor rod by providing a hollow anchor rod body and an adjusting mechanism; by providing a cavity, a push rod, and a piston, the piston is pushed downward by the material, thereby realizing the expansion of the expansion assembly; by providing a sealing block, on the one hand, the discharge port can be closed within a certain range to prevent the material from accumulating at the bottom of the anchor rod body and affecting the downward movement of the sealing block; on the other hand, by providing the sealing block, it is more conducive to the material entering the cavity, thereby realizing the downward movement of the piston; the present invention realizes the adjustment of the distance between the fixing block and the piston by providing a groove, a sliding rod, and a fixing plate, thereby realizing the adjustment of the angle between the two support rods, that is, adjusting the distance between the hinge of the two support rods and the bottom of the annular groove, so that the anchor rod body can be applied to holes of different sizes, thereby expanding the use range of the anchor rod. The present invention provides a circle; the push rod is fixed by setting a fixed plate; the present invention provides an arc-shaped connecting rod to facilitate the simultaneous downward movement of multiple fixed blocks, which can effectively avoid the inconsistent positions of the fixed blocks; the present invention provides a guide plate to realize the diversion of materials, thereby avoiding the occurrence of the phenomenon of no material in the cavity (no material in the cavity will affect the movement of the piston); by setting a sealing block, on the one hand, the discharge port can be closed within a certain range to avoid the accumulation of materials at the bottom of the anchor rod body and the influence of the downward movement of the sealing block; on the other hand, by setting the sealing block to move downward, the discharge of materials from the material outlet can be accelerated, that is, after the material pushes the piston to move to the lowest position, a large amount of material passes through the hollow part of the anchor rod body, which can accelerate the entry of materials into the anchor rod body (compared to the whole material passing through the cavity).

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a foundation pit support anchoring device according to one of the technical solutions of the present invention;

[0021] Figure 2 for Figure 1 A magnified view of middle A;

[0022] Figure 3 This is a schematic structural diagram of a foundation pit support anchoring device according to one of the technical solutions of the present invention;

[0023] Figure 4 This is a structural diagram of the piston described in one of the technical solutions of the present invention;

[0024] Figure 5 This is a structural schematic diagram of the connecting rod according to one of the technical solutions of the present invention;

[0025] Figure 6This is a schematic structural diagram of the fixing assembly described in one of the technical solutions of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0027] like Figure 1-6 As shown, the present invention provides a foundation pit support anchoring device, the foundation pit support anchoring device comprising:

[0028] The anchor rod body 1 is a hollow structure with an upper opening, and a plurality of cavities 6 are provided in the side wall of the anchor rod body 1 at intervals. The plurality of cavities 6 are arranged at equal intervals along the circumferential direction of the central axis of the anchor rod body 1, and the cavity 6 is provided with a feed port 7 and a discharge port 8. The feed port 7 and the discharge port 8 are both connected to the anchor rod body 1. The outer wall of the anchor rod body 1 is recessed to form an annular groove, and the annular groove is located below the cavity 6. The lower part of the anchor rod body 1 is circumferentially spaced apart with a plurality of material outlets 5, and a sealing block 4 is provided in the anchor rod body 1, and the sealing block is located below the feed port;

[0029] Multiple groups of adjustment mechanisms are provided in one-to-one correspondence with multiple cavities 6. The adjustment mechanisms include a piston 9 that is sealingly and slidably arranged in the cavity 6. The piston 9 is connected to a push rod 10. The lower end of the push rod 10 slides through the bottom of the cavity 6 and is located in the annular groove. The lower end of the push rod 10 is connected to an expansion assembly. The expansion assembly includes two hinged support rods 2. The support rod 2 located at the bottom is hinged to the annular groove, and the support rod 2 located at the top is slidably connected to the annular groove.

[0030] In this technical solution, the cavity 6 is arranged in the side wall of the anchor body 1, and the feed port 7 and the discharge port 8 are connected to the anchor body 1, that is, the material first enters the anchor body 1, then enters the cavity 6 from the feed port 7, exits from the discharge port 8, and finally enters the anchor body 1. The outer wall of the anchor body 1 is recessed inward to form an annular groove, and the annular groove is coaxially arranged with the anchor body 1. The push rod 10 is vertically arranged, and the support rod 2 located below can not only slide along the annular groove but also be hinged to the annular groove, so as to adjust the angle between the two support rods 2 by moving the support rod 2 located above up and down.

[0031] During use, the material enters the anchor body 1, and under the obstruction of the sealing block, the material enters the cavity 6 and pushes the piston 9 to move downward. The material pushes the piston 9 to move to the lowest position, and the material in the cavity 6 enters the anchor body 1 through the discharge port 8 and is ejected from the material outlet 5.

[0032] By adopting this technical solution, the present invention effectively improves the reinforcing force of the anchor rod by providing a hollow anchor rod body 1 and an adjusting mechanism; by providing a cavity 6, a push rod 10, and a piston 9, the piston 9 is pushed downward by the material, thereby realizing the expansion of the expansion assembly; and providing a sealing block 4, which is more conducive to the material entering the cavity 6, thereby realizing the pushing of the piston 9 downward.

[0033] In another technical solution, a plurality of fixing rods 14 are provided at intervals in the annular groove, and the plurality of fixing rods 14 are provided in a one-to-one correspondence with the plurality of expansion components. A fixing block 15 is slidably provided on the fixing rod 14 (one implementation method is that a fixing hole is provided on the fixing block 15, and the diameter of the fixing hole is slightly larger than the diameter of the fixing rod 14 so that the fixing block 15 can slide along the fixing rod 14). The support rod 2 located above is hinged to the fixing block 15, and a positioning hole is provided on the fixing block 15. The positioning hole is provided along the length direction of the fixing rod 14, and the lower end of the push rod 10 passes through the positioning hole.

[0034] The fixing block 15 is recessed to form a groove 16, through which the positioning hole passes. A fixing assembly is provided within the groove 16, comprising two arc-shaped fixing plates 20 hinged at their ends. The free ends of the fixing plates 20 are provided with positioning plates 17, each of which has a through hole 18 located outside the groove 16. The two positioning plates 17 are fixed by screws 22 and nuts. The push rod 10 passes through the two fixing plates 20, and the height of the fixing plates 20 is slightly less than the height of the groove 16. During use, the angle between the two support rods 2 can be adjusted by adjusting the push rod 10. By adopting this technical solution, the present invention adjusts the distance between the fixing block 15 and the piston 9 by providing the groove 16, the sliding rod, and the fixing plate 20, thereby adjusting the angle between the two support rods 2, that is, adjusting the distance between the hinge of the two support rods 2 and the bottom of the annular groove, so that the anchor body 1 can be adapted to holes of different sizes, thereby expanding the range of use of the anchor rod; and the fixing plate 20 is provided to fix the push rod 10.

[0035] In another technical solution, a rubber layer 21 is provided on the inner side wall of the fixing plate 20. With this technical solution, the push rod 10 is fixed and the fixing rod 14 is prevented from sliding relative to the fixing block 15.

[0036] In another technical solution, a guide plate 13 having a smaller diameter at the upper end and a larger diameter at the lower end is provided within the anchor body 1. The larger diameter end of the guide plate 13 is circumferentially fixed to the inner sidewall of the anchor body 1, and the larger diameter end of the guide plate 13 is slightly lower than the feed port 7. The guide plate 13 is coaxially arranged with the anchor body 1. By adopting this technical solution, the present invention achieves material diversion by providing the guide plate 13, thereby preventing the cavity 6 from being empty of material (an absence of material in the cavity 6 would affect the movement of the piston 9).

[0037] In another technical solution, the sealing block can move downward relative to the anchor rod body. When the piston moves to the lowest position, the upper end of the piston is slightly lower than the discharge port, and the sealing block blocks the discharge port; when the sealing block moves to the lowest position, the material outlet is higher than the upper end of the sealing block. In this technical solution, the sealing block 4 can move downward along the anchor rod body 1 under the push of the material. The sealing block 4 is provided with a first sealing gasket in the axial direction, and the piston 9 is always lower than the discharge port 8 before the sealing block 4 (which can be achieved by setting a first sealing gasket). (the length of the sealing block is greater than the thickness of the piston), and when the piston 9 moves from a position slightly higher than the discharge port 8 to a position lower than the discharge port 8, the side wall of the sealing block 4 is always in a state of closing the discharge port 8 until the sealing block 4 moves to a position where the upper end of the sealing block 4 is lower than the discharge port 8, and the discharge port 8 is connected to the anchor body 1. At the same time, the sealing block 4 also moves downward until the upper end of the sealing block 4 is lower than the discharge port 8. The sealing block 4 continues to move downward until the upper end of the sealing block 4 is lower than the material outlet 5, and the material is ejected from the material outlet 5. With this technical solution, by setting the sealing block 4, on the one hand, the discharge port 8 can be closed within a certain range, thereby preventing the material from accumulating at the bottom of the anchor body 1 and affecting the downward movement of the sealing block 4. On the other hand, by setting the sealing block to move downward, the discharge of the material from the material outlet can be accelerated, that is, after the material pushes the piston to move to the lowest position, a large amount of material passes through the hollow part of the anchor body, which can accelerate the entry of the material into the anchor body (compared to the material passing through the cavity).

[0038] In another technical solution, an annular sealing ring 11 is provided on the lower surface of the piston 9, and the bottom of the cavity 6 is recessed downward to form an annular sealing groove 12 to accommodate the sealing ring 11. The push rod 10 sequentially passes through the sealing ring 11. When the sealing ring 11 is located in the sealing groove 12, the lower surface of the piston 9 contacts the bottom of the cavity 6, and the upper surface of the piston 9 is slightly lower than the discharge port 8. By adopting this technical solution, the present invention can further prevent material from seeping out of the bottom of the cavity 6 by providing the sealing ring 11.

[0039] In another technical solution, the feed opening 7 is arc-shaped. This technical solution facilitates the material to enter the cavity 6 through the feed opening 7.

[0040] In another technical solution, any two adjacent fixing blocks 15 are connected by an arc-shaped connecting rod 19, and the connecting rod 19 is located in the groove 16. With this technical solution, the present invention provides an arc-shaped connecting rod 19 to facilitate the simultaneous downward movement of multiple fixing blocks 15, thereby effectively avoiding inconsistent positions of the fixing blocks 15.

[0041] In another technical solution, a conical tip portion 3 is provided at the lower end of the anchor body 1. This technical solution facilitates the insertion of the anchor body 1 into the hole.

[0042] The number of devices and processing scales described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the foundation pit support anchoring device of the present invention will be apparent to those skilled in the art.

[0043] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Foundation pit support anchoring device, characterized in that: include: The anchor rod body is a hollow structure, wherein a plurality of cavities are provided in the side wall of the anchor rod body, and the plurality of cavities are arranged at equal intervals along the circumferential direction of the central axis of the anchor rod body, the cavity is provided with a feed port and a discharge port, the feed port and the discharge port are both connected to the anchor rod body, the outer side wall of the anchor rod body is recessed to form an annular groove, and the annular groove is located below the cavity, wherein a plurality of material outlets are provided circumferentially at the lower part of the anchor rod body, a sealing block is provided in the anchor rod body, and the sealing block is located below the feed port; Multiple groups of adjustment mechanisms are provided in a one-to-one correspondence with the multiple cavities, the adjustment mechanisms include a piston sealingly slidably disposed in the cavity, the piston is connected to a push rod, the lower end of the push rod slides through the bottom of the cavity and is located in the annular groove, the lower end of the push rod is connected to an expansion assembly, the expansion assembly includes two hinged support rods, the lower support rod is hinged to the annular groove, and the upper support rod is slidably connected to the annular groove; A plurality of fixing rods are arranged at intervals in the annular groove, and the plurality of fixing rods are arranged in a one-to-one correspondence with the plurality of expansion components. A fixing block is slidably provided on the fixing rod, and a support rod located above is hinged to the fixing block. A positioning hole is provided on the fixing block, and the positioning hole is arranged along the length direction of the fixing rod, and the lower end of the push rod passes through the positioning hole; The fixing block is recessed to form a groove, the positioning hole passes through the groove, a fixing assembly is provided in the groove, the fixing assembly includes two arc-shaped fixing plates with hinged ends, a positioning plate is provided at the free end of the fixing plate, a through hole is provided on the positioning plate, the through hole is located outside the groove, the two positioning plates are fixed by screws and nuts, wherein the push rod passes through the two fixing plates, and the height of the fixing plates is less than the height of the groove.

2. The foundation pit support anchoring device according to claim 1, characterized in that: The inner side wall of the fixing plate is provided with a rubber layer.

3. The foundation pit support anchoring device according to claim 1, characterized in that: A material guide plate with a small upper diameter and a large lower diameter is provided in the anchor rod body. The end of the material guide plate with a large diameter is circumferentially fixed to the inner side wall of the anchor rod body, and the end of the material guide plate with a large diameter is lower than the feed port.

4. The foundation pit support anchoring device according to claim 3, characterized in that: The sealing block can move downward relative to the anchor rod body. When the piston moves to the lowest position, the upper end of the piston is lower than the discharge port, and the sealing block blocks the discharge port; when the sealing block moves to the lowest position, the material outlet is higher than the upper end of the sealing block.

5. The foundation pit support anchoring device according to claim 2, characterized in that: A circular sealing ring is provided on the lower surface of the piston, and the bottom of the cavity is recessed downward to form an annular sealing groove to accommodate the sealing ring, wherein the push rod passes through the sealing ring in sequence. When the sealing ring is located in the sealing groove, the lower surface of the piston contacts the bottom of the cavity, and the upper surface of the piston is lower than the discharge port.

6. The foundation pit support anchoring device according to claim 1, characterized in that: The feed port is arc-shaped.

7. The foundation pit support anchoring device according to claim 2, characterized in that: Any two adjacent fixing blocks are connected by an arc-shaped connecting rod, and the connecting rod is located in the groove.

8. The foundation pit support anchoring device according to claim 1, characterized in that: The lower end of the anchor rod body is provided with a conical tip portion.

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